Ultrasound imaging apparatus and ultrasound imaging system

Abstract

The utility model provides an ultrasonic imaging device and an ultrasonic imaging system, the ultrasonic imaging device comprises an interventional catheter assembly and an operating handle assembly, the operating handle assembly is provided with a first handle end, and the interventional catheter assembly is connected to the first handle end; the operating handle assembly is further provided with a main body and a switching piece, the main body has initial damping, the main body can be switched between a first state and a second state through the switching piece, and the initial damping restrains the interventional catheter assembly when the main body is in the first state so that the interventional catheter assembly can deform from a natural state to a specified state; when the main body is in the second state, the initial damping relieves constraint on the interventional catheter assembly, and the interventional catheter assembly returns to the natural form from the specified form. According to the interventional catheter assembly, the interventional catheter assembly can be locked to a designated form through initial damping of the main body, one-key unlocking can be achieved through the switching piece, controllability is guaranteed, locking and unlocking operation is simpler, and use experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly to an ultrasonic imaging device and an ultrasonic imaging system. Background Art

[0002] Intracardiac ultrasound is a new ultrasonic cardiogram diagnostic technology combined with cardiac catheterization. An interventional catheter assembly in an ultrasonic imaging device is placed inside a heart cavity to accurately display the anatomical and physiological structures inside the heart and within the lumen of large blood vessels. However, in existing ultrasonic imaging devices, the operating handle assembly does not have initial damping, and it is necessary to operate the operating handle assembly multiple times to lock the interventional catheter assembly to a specified working state. Moreover, after the interventional catheter assembly is locked to the specified working state, it cannot be quickly unlocked and reset. Therefore, there is an urgent need for an ultrasonic imaging device that is more convenient for both locking and unlocking. Summary of the Utility Model

[0003] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present utility model, an ultrasonic imaging device is provided, and the technical solution is as follows.

[0004] The ultrasonic imaging device includes an interventional catheter assembly and an operating handle assembly. The operating handle assembly has a first handle end, and the interventional catheter assembly is connected to the first handle end. Among them, the operating handle assembly has a main body and a switching member. The main body has initial damping, and the main body can be switched between a first state and a second state through the switching member. The initial damping restricts the interventional catheter assembly when the main body is in the first state, causing the interventional catheter assembly to deform from a natural form to a specified form. The initial damping releases the restriction on the interventional catheter assembly when the main body is in the second state, and the interventional catheter assembly returns from the specified form to the natural form.

[0005] The ultrasonic imaging device of the present utility model can lock the interventional catheter assembly to a specified form through the initial damping of the main body, and can be unlocked with one key through the switching member, which not only ensures the controllability, but also makes the locking and unlocking operations simpler, improving the user experience.

[0006] According to another aspect of the present utility model, an ultrasonic imaging system is provided. The ultrasonic system includes an ultrasonic host, a female connector, and the ultrasonic imaging device as described above. The ultrasonic imaging device further includes a connector assembly. The connector assembly is connected to a second handle end of the operating handle assembly provided opposite to the first handle end, so that the interventional catheter assembly, the operating handle assembly, and the connector assembly are arranged in sequence along the axis. A docking head is formed at one end of the connector assembly away from the operating handle assembly, and the docking head is docked with the female connector. The female connector is connected to the ultrasonic host through a transmission cable.

[0007] Since the ultrasonic imaging device described above has the above beneficial effects, the ultrasonic imaging system including the ultrasonic imaging device described above also has the above beneficial effects, which will not be elaborated one by one here. The intervention catheter assembly, operation handle assembly and connector assembly of the ultrasonic imaging system of the present invention are connected in sequence, ensuring the controllability of the ultrasonic imaging device. And based on the setting of the docking head, the ultrasonic imaging device can be installed and disassembled as a disposable product through the connector assembly, meeting the sterile condition usage requirements of the surgical requirements for applying the ultrasonic imaging system.

[0008] A series of simplified concepts are introduced in the utility model content, which will be further elaborated in detail in the specific implementation part. The utility model content part does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0009] The following will detail the advantages and features of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The following drawings of the present invention are used as a part of the present invention to understand the present invention. The embodiments and descriptions thereof shown in the drawings are used to explain the principles of the present invention. In the drawings,

[0011] Figure 1 is a schematic diagram of an ultrasonic imaging system according to an exemplary embodiment of the present invention;

[0012] Figure 2 is Figure 1 a schematic structural diagram of an intervention catheter assembly according to an exemplary embodiment in

[0013] Figure 3 is Figure 1 a schematic cross-sectional view of an intervention catheter assembly according to an exemplary embodiment in

[0014] Figure 4 is Figure 1 a schematic partial cross-sectional view of an intervention catheter assembly according to an exemplary embodiment in

[0015] Figure 5 is Figure 1 a schematic longitudinal cross-sectional view of the intervention head end of an intervention catheter assembly according to an exemplary embodiment in

[0016] Figure 6 is Figure 1 a schematic partial structure diagram of an intervention catheter assembly according to an exemplary embodiment in

[0017] Figure 7 is Figure 2Cross-sectional view of an exemplary embodiment of the flexible hose of the interventional catheter assembly shown;

[0018] Figure 8 is Figure 2 Cross-sectional view of another exemplary embodiment of the flexible hose of the interventional catheter assembly shown;

[0019] Figure 9 is Figure 2 Cross-sectional view of yet another exemplary embodiment of the flexible hose of the interventional catheter assembly shown;

[0020] Figure 10 is Figure 2 Cross-sectional view of yet another exemplary embodiment of the flexible hose of the interventional catheter assembly shown;

[0021] Figure 11 is Figure 6 Schematic diagram of a metal tube body of an exemplary embodiment shown;

[0022] Figure 12 is Figure 11 Enlarged view of part A in;

[0023] Figure 13 is Figure 1 Reference of the usage state of the interventional catheter assembly shown Figure 1 ;

[0024] Figure 14 is Figure 6 Schematic diagram of a metal tube body of another exemplary embodiment shown;

[0025] Figure 15 is Figure 1 Reference of the usage state of the interventional catheter assembly shown Figure 2 ;

[0026] Figure 16 is Figure 6 Schematic diagram of a metal tube body of yet another exemplary embodiment shown;

[0027] Figure 17 is Figure 6 Schematic diagram of a metal tube body of yet another exemplary embodiment shown;

[0028] Figure 18 is Figure 1 Stereogram of an exemplary embodiment of the operating handle assembly shown;

[0029] Figure 19 is Figure 18 Exploded view of the operating handle assembly shown;

[0030] Figure 20 is Figure 18Cross-sectional view of the operating handle assembly shown;

[0031] Figure 21 is Figure 18 Partial cross-sectional view of the operating handle assembly shown, where the first rotating member and the second rotating member are separated;

[0032] Figure 22 is Figure 18 Partial cross-sectional view of the first rotating member shown;

[0033] Figure 23 is Figure 18 Partial cross-sectional view of the second rotating member shown;

[0034] Figure 24 is Figure 1 Stereogram of the operating handle assembly of another exemplary embodiment shown;

[0035] Figure 25 is Figure 24 Cross-sectional view of the operating handle assembly shown;

[0036] Figure 26 is Figure 24 Exploded view of the operating handle assembly shown;

[0037] Figure 27 is Figure 24 Partial cross-section of the operating handle assembly shown Figure 1 ;

[0038] Figure 28 is Figure 24 Partial explosion of the operating handle assembly shown Figure 1 ;

[0039] Figure 29 is Figure 24 Partial explosion of the operating handle assembly shown Figure 2 ;

[0040] Figure 30 is Figure 29 Partial exploded view of the operating handle assembly shown from another perspective;

[0041] Figure 31 is Figure 24 Partial cross-section of the operating handle assembly shown Figure 2 ;

[0042] Figure 32 is Figure 1 Stereogram of a connector assembly of an exemplary embodiment in

[0043] Figure 33 is Figure 32 Partial stereogram of the connector assembly shown;

[0044] Figure 34 is Figure 33 a perspective view of a docking head of an exemplary embodiment in

[0045] Figure 35 is Figure 1 a schematic connection diagram of the connector assembly and the female connector shown in

[0046] Figure 36 is Figure 35 a perspective view of a female connector of an exemplary embodiment in

[0047] Figure 37 is Figure 35 a perspective view of an upper housing of an exemplary embodiment in , where a rigid locking member is shown;

[0048] Figure 38 is Figure 37 a cross-sectional view of the upper housing shown in

[0049] Figure 39A is Figure 37 a perspective view of a rigid locking member of an exemplary embodiment in

[0050] Figure 39B is Figure 39A a schematic view of an operating member of an exemplary embodiment in

[0051] Figure 40 is Figure 36 a perspective view of a docking seat of an exemplary embodiment in

[0052] Among them, the above-mentioned drawings include the following reference numerals:

[0053] 1. Interventional catheter assembly; 11. Tube body; 12. Ultrasonic transducer; 13. Traction member; 100. Flexible hose; 101. Support tube section; 102. Bending tube section; 103. Interventional head end; 104. Rigid transition section; 1041. Fourth connection end; 1042. Fifth connection end; 110. Head end tube; 111. Sound-transmitting tube body; 1111. Inner wall surface; 112. Imaging tube body; 121. Ultrasonic working end face; 122. Outer surface; 123. Connection end; 124. Lead wire; 131. First control wire; 132. Second control wire; 141. Accommodation space; 142. Sound-transmitting medium layer; 150. Inner layer tube body; 151. First through hole; 1511. First cavity; 152. Second through hole; 1521. Second cavity; 153. First cavity tube; 154. Second cavity tube; 155. Depressed part; 160. Adhesive layer; 170. Outer layer tube body; 180. Metal tube body; 1801. First end; 1802. Second end; 1810. Bending hose section; 1811. Remote end; 1820. Support hose section; 1821. Third connection end; 1830. Transition section; 1831. First connection end; 1832. Second connection end; 190. Braided layer; 2. Operating handle assembly; 20. Body; 21. First handle end; 22. Second handle end; 23. Gripping part; 24. Shaft body; 25. End cap; 201. Switching part; 2011. First toothed protrusion; 2012. First mating surface; 2012a. First mating end; 2013. Winding part; 2014. Marking part; 2014a. First marking part; 2014b. Second marking part; 210. First rotating part; 211. First rotating sleeve; 212. First connecting part; 220. Fitting part; 221. Second toothed protrusion; 222. First winding part; 230. Second rotating part; 231. Second winding part; 232. Second rotating sleeve; 233. Second connecting part; 240. Elastic part; 250. Wire winding assembly; 251. Steering column; 260. Friction plate; 270. First reset part; 280. Second reset part; 290. Damper; 291. Second mating surface; 2911. Second mating end; 2912. Third mating end; 3. Connector assembly; 31. Male housing; 32. Wire connection tube; 310. Male docking surface; 311. Guide part; 3111. Docking guide surface; 3112. Side guide surface; 321. Locking groove; 322. Anti-slip pattern; 330. Docking head; 331. Connection terminal; 4. Female connector; 40. Female housing; 410. Accommodation cavity; 420. Positioning pin; 421. Torque part; 430. Upper housing; 431. Communication port; 432. Placement cavity; 440. Positioning seat; 441. Positioning groove; 4411. Positioning part; 4412. Opening; 450. Docking seat; 451. Connection end seat; 460. Connection port; 470. Female docking surface; 471. Guide groove; 480. Locking part; 481. Locking body; 4811. Abutting part;482. Locking part; 490. Operating part; 491. Driving end; 492. Operating end; 4921. Button; 493. Limiting part; 5. Ultrasonic host; 50. Display; 6. Transmission cable; Detailed implementation

[0054] In the following description, a large number of details are provided to enable a thorough understanding of the present utility model. However, those skilled in the art can understand that the following description only exemplarily shows the preferred embodiments of the present utility model, and the present utility model can be implemented without one or more such details. In addition, in order to avoid confusion with the present utility model, some well-known technical features in the art are not described in detail.

[0055] In order to thoroughly understand the embodiments of the present utility model, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present utility model is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present utility model are described in detail below. However, in addition to these detailed descriptions, the present utility model can also have other embodiments.

[0056] An embodiment of the present utility model provides an ultrasonic imaging device. The ultrasonic imaging device provided by the present utility model can be applied to an ultrasonic imaging system. The following will introduce in detail an ultrasonic imaging device according to an embodiment of the present utility model with reference to the accompanying drawings.

[0057] Refer to Figure 1, the ultrasonic imaging device may include an interventional catheter assembly 1 and an operating handle assembly 2. The operating handle assembly 2 may have a first handle end 21. The interventional catheter assembly 1 may be connected to the first handle end 21. The operating handle assembly 2 may have a main body 20 and a switching member 201. The main body 20 may have an initial damping, and the main body 20 may be switched between a first state and a second state through the switching member 201. The initial damping constrains the interventional catheter assembly 1 when the main body 20 is in the first state so that the interventional catheter assembly 1 is deformed from a natural form to a specified form. The initial damping releases the constraint on the interventional catheter assembly 1 when the main body 20 is in the second state, and the interventional catheter assembly 1 returns to a natural form from a specified form. The natural form refers to the form of the interventional catheter assembly 1 when it is not deformed. The specified form refers to the form of the interventional catheter assembly 1 when it is bent to a desired plane, position or angle during surgery. The initial damping means that the operating handle assembly 2 has a certain damping before use, and the interventional catheter assembly 1 can be directly adjusted without adjusting the damping by an additional operating component, so that the interventional catheter assembly 1 is locked when it is in a specified form. At the same time, only the switch 201 needs to be operated to unlock with one key, and the interventional catheter assembly 1 can be reset. It should be noted that the state that the main body 20 can switch can include only the first state and the second state, or can include the first state, the second state and at least one state between the two states, wherein the two states can include a continuous number of states. Further, the initial damping can constrain the interventional catheter assembly 1 when the main body 20 is in the first state, and its restraining force can be directly released when it is out of the first state, that is, after leaving the first state, the damping of the main body 20 can be directly and completely released to the second state and then unlocked with one key to quickly restore to the natural form; after leaving the first state, it can also be changed to a state with reduced damping. When the main body 20 does not reach the second state, the damping is small but still exists. At this time, the interventional catheter assembly 1 can slowly return to the natural form, and when the main body 20 reaches the second state, the damping can be completely released, and the interventional catheter assembly 1 can quickly return to the natural form.

[0058] The ultrasonic imaging device of the present invention can lock the interventional catheter assembly 1 to a specified shape through the initial damping of the main body 20, and can achieve one-key unlocking through the switching member 201, which not only ensures controllability but also makes the locking and unlocking operations simpler, thereby improving the user experience.

[0059] Combined with reference Figure 1 , Figure 2 , Figure 3 and Figure 18, the interventional catheter assembly 1 may include a tube body 11, an ultrasonic transducer 12 (a device that converts electromagnetic energy into mechanical energy for transmitting and receiving ultrasonic signals), and a traction member 13. The tube body 11 may include a support tube section 101, a bending tube section 102, and an interventional head end 103 that are sequentially connected along an axis. The stiffness of the support tube section 101 may be greater than that of the bending tube section 102. The support tube section 101, the bending tube section 102, and the interventional head end 103 may be connected together by welding, pasting, or the like. The support tube section 101, the bending tube section 102, and the interventional head end 103 may also be integrally injection-molded. The ultrasonic transducer 12 may be disposed within the interventional head end 103. The traction member 13 may pass through the support tube section 101 to connect to the main body 20 and pass through the bending tube section 102 to connect to the connection portion between the bending tube section 102 and the interventional head end 103. The traction member 13 may be a metal wire, a non-metal wire, or the like, and the traction member 13 may be fixed to the connection portion between the bending tube section 102 and the interventional head end 103 by welding, pasting, or tying. A connection end 123 may be provided at one end of the ultrasonic transducer 12 close to the bending tube section 102. The connection end 123 may be used to connect a wire 124, and the connection end 123 may be a pad connected to the wire 124. The switching member 201 is movable or rotatable relative to the main body 20. The initial damping causes the traction member 13 to deform the support tube section 101 and the bending tube section 102 from the natural form to the specified form when the main body 20 is in the first state, and the initial damping releases the constraint on the traction member 13 when the main body 20 is in the second state, and the traction member 13 causes the support tube section 101 and the bending tube section 102 to return from the specified form to the natural form. With such a setting, the controllability of the ultrasonic imaging device is ensured, and it is satisfied that the interventional head end 103 can be bent in four directions through the traction member 13 and the operation handle assembly 2 to realize ultrasonic cross-sectional examinations from different perspectives, and the support tube section 101 and the bending tube section 102 have certain supportability and pushability.

[0060] Refer to in combination Figure 3 and Figure 4, the intervening head end 103 may include an acoustic transmission tube body portion 111 and a visualization tube body portion 112. The acoustic transmission tube body portion 111 and the visualization tube body portion 112 are circumferentially arranged along the intervening catheter assembly 1, and the acoustic transmission tube body portion 111 and the visualization tube body portion 112 may enclose to form a receiving space 141. The ultrasonic transducer 12 may be disposed within the receiving space 141. The ultrasonic transducer 12 may have an ultrasonic working end face 121 for transmitting and / or receiving ultrasonic signals, and the ultrasonic working end face 121 faces the acoustic transmission tube body portion 111. Among them, the acoustic transmission tube body portion 111 may be made of a material with good acoustic transmission performance, including but not limited to PEBAX material (PEBAX is a high-performance polymer, commonly known as nylon elastomer, which has the characteristics of both thermoplastic plastics and rubbers), silicone, silicone oil, etc. The visualization tube body portion 112 may be made of a material with visualization ability, for example, a material that can be visualized in an ultrasonic image during ultrasonic imaging, including but not limited to BaSO4 or platinum-iridium alloy powder, etc. With such a setting, the intervening head end 103 integrates acoustic transmission performance and visualization function, which not only ensures that the ultrasonic transducer 12 can perform real-time imaging, but also can synchronously display the position of the intervening head end 103 under the visualization system. When the intervening head end 103 enters the lumen, the operator can know the specific position of the intervening head end 103 in the lumen through the ultrasonic image, which can avoid the occurrence of blind spots affecting the operator's operation and phenomena such as piercing the viscera and blood vessel passages.

[0061] Referring to Figures 3 to 5 , the acoustic transmission tube body portion 111 may have an inner wall surface 1111. An acoustic transmission medium layer 142 may be disposed between the inner wall surface 1111 and the ultrasonic working end face 121. Specifically, a gap is formed between the inner wall surface 1111 and the ultrasonic working end face 121, and the gap is filled with materials including but not limited to PEBAX material, silicone, silicone oil, etc. to form the acoustic transmission medium layer 142. In this way, it is ensured that the ultrasonic working end face 121 can transmit and receive ultrasonic signals, thereby ensuring the acoustic penetration of the ultrasonic transducer 12.

[0062] It should be understood that there may also be a gap between the outer surface 122 of the ultrasonic transducer 12 (the outer surface 122 refers to the surface of the ultrasonic transducer 12 other than the ultrasonic working end face 121) and the inner wall of the visualization tube body portion 112. In order to reduce the hardness of the intervening head end 103, this gap may not be filled with materials. When the tubing of the intervening head end 103 is relatively soft, materials with high acoustic transmission performance or low acoustic transmission performance may also be filled to play a supporting role.

[0063] Referring to Figures 2 to 5, the projection of the sound-transmitting tube body portion 111 on the ultrasonic working end face 121 at least partially covers the ultrasonic working end face 121. Preferably, the projection of the sound-transmitting tube body portion 111 towards the ultrasonic working end face 121 can completely cover the ultrasonic working end face 121. The projection of the sound-transmitting tube body portion 111 on the ultrasonic working end face 121 can cover the ultrasonic working end face 121 in both the axial direction and the radial direction of the interventional catheter assembly 1. Thus, the ultrasonic signal emitted by the ultrasonic working end face 121 can be emitted from the sound-transmitting tube body portion 111 to the maximum extent, and the reflected ultrasonic signal can also pass through the sound-transmitting tube body portion 111 and be received by the ultrasonic working end face 121 to the maximum extent, ensuring the sound-transmitting performance of the sound-transmitting tube body portion 111. In addition, the projection of the sound-transmitting tube body portion 111 towards the ultrasonic working end face 121 can be smaller than the ultrasonic working end face 121. The projection of the sound-transmitting tube body portion 111 towards the ultrasonic working end face 121 can also be larger than the ultrasonic working end face 121, but not in a completely covered state. In the above cases, the ultrasonic transducer 12 can be rotated within the accommodation space 141 under the drive of the operating handle until the ultrasonic working end face 121 can emit and receive ultrasonic signals.

[0064] Referring to Figure 2 and Figure 5 , in the circumferential direction of the tube body 11, the cross-section of the sound-transmitting tube body portion 111 can be a 1 / 2 arc (i.e., the sound-transmitting tube body portion 111 is a semi-tube) or an arc smaller than 1 / 2 arc. Thus, when the cross-section of the sound-transmitting tube body portion 111 is a 1 / 2 arc, the projection of the sound-transmitting tube body portion 111 towards the ultrasonic working end face 121 can completely cover the ultrasonic working end face 121, ensuring the sound-transmitting performance of the sound-transmitting tube body portion 111. When the cross-section of the sound-transmitting tube body portion 111 is an arc smaller than 1 / 2 arc, without affecting the emission and reception of ultrasonic signals by the ultrasonic working end face 121, the size of the imaging tube body portion 112 can be increased as much as possible, improving the imaging effect. In addition, being arc-shaped makes the surface of the interventional catheter assembly 1 as smooth as possible to reduce damage to blood vessels, organs, etc.

[0065] Referring again to Figure 2 and Figure 5 , in the circumferential direction of the tube body 11, the cross-section of the imaging tube body portion 112 can be a 1 / 2 arc (i.e., the imaging tube body portion 112 is a semi-tube) or an arc larger than 1 / 2 arc. Through the imaging function of the imaging tube body portion 112, the position of the interventional head end 103 can be displayed under the imaging system. When the imaging tube body portion 112 is a 1 / 2 arc, it has a good imaging effect; when the imaging tube body portion 112 is an arc larger than 1 / 2 arc, while ensuring the ultrasonic performance of the ultrasonic transducer 12, the imaging effect is further improved, thus avoiding the phenomenon of puncturing organs, etc. due to the existence of blind spots during use that affect the operator's operation.

[0066] Referring again toFigures 2 to 5 , the sound-transmitting tube body part 111 and the imaging tube body part 112 are aligned and connected together to form the head tube 110. The accommodation space 141 can be arranged inside the head tube 110. Specifically, the sound-transmitting tube body part 111 can be injection-molded with a material having good sound-transmitting performance, and the imaging tube body part 112 can be injection-molded with a material having good imaging effect, thus forming by secondary injection molding with two different materials. The sound-transmitting tube body part 111 and the imaging tube body part 112 can also be welded or bonded together. In this way, it is avoided that the head tube 110 formed by the tube body parts of two different materials generates minute gaps, affecting the use of the interventional catheter assembly 1.

[0067] Referring to Figure 3 、 Figure 6 and Figure 11 , the support tube section 101 and the bending tube section 102 are connected to form the flexible hose 100. The flexible hose 100 can include a metal tube body 180 and an inner tube body 150. The metal tube body 180 can be sleeved outside the inner tube body 150. The outer wall surface of the metal tube body 180 can have spiral cutting grooves. From the first end 1801 to the second end 1802 of the metal tube body 180, the pitch of at least one section of the spiral cutting grooves is gradually changed, and / or the groove width of at least one section of the spiral cutting grooves is gradually changed, and the traction member 13 is disposed through the inner tube body 150.

[0068] As Figure 12 , define the pitch of the spiral cutting grooves on the metal tube body 180 as P, and the groove width of the spiral cutting grooves as L. The pitch refers to the axial distance between two adjacent threads when the thread of the spiral groove rotates one week. The groove width refers to the axial distance between the two sides of a thread groove on the thread profile at the pitch diameter. It should be noted that the pitch and the groove width of one section of the spiral cutting grooves on the metal tube body 180 can both be gradually changed, or one of them can be gradually changed while the other remains unchanged. The gradual change rules of the pitch and the groove width can satisfy the arithmetic progression change, and in order to meet the supportability and pushability of the metal tube body 180, the common difference of the pitch can be greater than the common difference of the groove width.

[0069] Furthermore, the pitch and the groove width of at least one section of the spiral cutting grooves are gradually changed, which can be that the pitch and the groove width between each thread are different, or several adjacent threads are grouped, the pitch and the groove width within the same group are the same, and the pitch and the groove width between each group are different.

[0070] With such a setting, since the spiral cutting grooves are formed on the metal tube body 180, the gradual change of the pitch and / or the groove width of the spiral cutting grooves realizes the gradual change of the stiffness of the metal tube body 180, which not only enhances the flexibility of the metal tube body 180, but also meets the supportability and pushability of the metal tube body 180. Combined with the setting that the inner tube body 150 is penetrated with the traction member 13, the traction member 13 is driven by controlling the operation handle assembly 2 to actively bend and adjust the entire interventional catheter assembly 1, thereby increasing the bending degree of the interventional catheter assembly 1 in different directions, and further meeting the controllability required during operation. In addition, when using the interventional catheter assembly 1, it can also be bent passively under the action of obstacles in the cavity.

[0071] With reference to Figure 3 and Figure 11 , the metal tube body 180 may include a bending flexible hose section 1810 and a supporting flexible hose section 1820. The bending flexible hose section 1810 may be close to the first end 1801, and the supporting flexible hose section 1820 may be close to the second end 1802. The stiffness of the supporting flexible hose section 1820 may be greater than that of the bending flexible hose section 1810. The second end 1802 may be farther from the insertion end than the first end 1801. The stiffness of the supporting flexible hose section 1820 may be greater than that of the bending flexible hose section 1810. With such a setting, the bending flexible hose section 1810 has good flexibility, and the supporting flexible hose section 1820 has good supportability and pushability, so as to meet the controllability required by the operator during use. Since the interventional catheter assembly 1 usually has a certain length, in order to meet the controllability required by the operator during use, the length of the supporting flexible hose section 1820 may be greater than that of the bending flexible hose section 1810.

[0072] In an embodiment of the present invention, with reference to Figure 11 and Figure 13 , the bending flexible hose section 1810 and the supporting flexible hose section 1820 may be connected. From the first end 1801 to the second end 1802, at least one of the pitch and the groove width of the spiral cutting groove may be gradually changed. For example, from the first end 1801 to the second end 1802, the pitch of the spiral cutting groove gradually increases, and the groove width of the spiral cutting groove gradually increases; or from the first end 1801 to the second end 1802, the pitch of the spiral cutting groove gradually decreases, and the groove width of the spiral cutting groove gradually decreases; or from the first end 1801 to the second end 1802, the pitch of the spiral cutting groove gradually increases, and the groove width of the spiral cutting groove remains unchanged. The bending flexible hose section 1810 of the interventional catheter assembly 1 may form a shape similar to a "fishhook" when bent. With such a setting, through the gradual change of the stiffness of the metal tube body 180, the bending degree of the interventional catheter assembly 1 in different directions is increased, so that the interventional catheter assembly 1 is applicable to scenarios where a larger bending degree is required. Of course, it is not excluded that from the first end 1801 to the second end 1802, the pitch and the groove width of the spiral cutting groove are equal.

[0073] In another embodiment of the present utility model, with reference to Figures 14 to 16 , the bent hose section 1810 may have a distal end 1811 away from the first end 1801. From the first end 1801 to the distal end 1811, the pitch of the spiral cutting groove may be equal, and the groove width of the spiral cutting groove may be equal. At this time, the bent hose section 1810 will bend uniformly when bent and can form a shape close to an arc. With such a setting, the interventional catheter assembly 1 is applicable to scenarios that require uniform bending.

[0074] Refer to Figure 14 , the metal tube body 180 may further have a transition section 1830. The transition section 1830 may have a first connection end 1831 and a second connection end 1832. The first connection end 1831 may be connected to the bent hose section 1810. The second connection end 1832 may be connected to the support hose section 1820. From the first connection end 1831 to the second connection end 1832, the pitch of the spiral cutting groove may gradually increase from P1 to P2, and the groove width of the spiral cutting groove may be equal; wherein, P1 is the pitch of the spiral cutting groove at the connection of the bent hose section 1810 and the first connection end 1831, and P2 is the pitch of the spiral cutting groove at the connection of the support hose section 1820 and the second connection end 1832. The pitch of a small section where the first connection end 1831 is connected to the bent hose section 1810 may be equal or gradually change, and the pitch of a small section where the second connection end 1832 is connected to the support hose section 1820 may be equal or gradually change. For the case where the pitch at the connection of the first connection end 1831 and the bent hose section 1810 gradually changes and the pitch at the connection of the second connection end 1832 and the support hose section 1820 also gradually changes, the overall stiffness of the transition section 1830 and the support hose section 1820 can be gradually changed. The groove width of the spiral cutting groove on the transition section 1830 may be equal to the groove width of the spiral cutting groove on the bent hose section 1810. It can be understood that the minimum pitch of the spiral cutting groove on the transition section 1830 is greater than the pitch of the spiral cutting groove on the bent hose section 1810. In this way, by setting the transition section 1830, a gradual change in stiffness connection between the support hose section 1820 and the bent hose section 1810 is achieved.

[0075] The support hose section 1820 may have a third connection end 1821 connected to the second connection end 1832. From the third connection end 1821 to the second end 1802, the pitch of the spiral cutting groove gradually increases from P2. It can be understood that the minimum pitch of the spiral cutting groove on the support hose section 1820 is greater than the maximum pitch of the spiral cutting groove on the transition section 1830. With such a setting, the flexibility of the support hose section 1820 is increased, and the required supportability and pushability of the support hose section 1820 are satisfied. In addition, the groove width of the spiral cutting groove on the support hose section 1820 may be gradually changing or equal.

[0076] Referring to Figure 16 , the metal pipe body 180 may also have a transition section 1830. The transition section 1830 may have a first connection end 1831 and a second connection end 1832. The first connection end 1831 may be connected to the bent hose section 1810, and the second connection end 1832 may be connected to the support hose section 1820. From the first connection end 1831 to the second connection end 1832, the groove width of the spiral cutting groove gradually decreases from L1 to L2, and the pitch of the spiral cutting groove is equal; where L1 is the groove width of the spiral cutting groove at the connection of the bent hose section 1810 and the first connection end 1831, and L2 is the groove width of the spiral cutting groove at the connection of the support hose section 1820 and the second connection end 1832. The groove width of a small section where the first connection end 1831 is connected to the bent hose section 1810 may be equal or gradually change, and the groove width of a small section where the second connection end 1832 is connected to the support hose section 1820 may be equal or gradually change. For the case where the groove width at the connection of the first connection end 1831 and the bent hose section 1810 gradually changes and the groove width at the connection of the second connection end 1832 and the support hose section 1820 also gradually changes, a gradual change in the overall stiffness between the transition section 1830 and the support hose section 1820 can be achieved. The pitch of the spiral cutting groove on the transition section 1830 may be equal to the pitch of the spiral cutting groove on the bent hose section 1810. It can be understood that the maximum groove width of the spiral cutting groove on the transition section 1830 is smaller than the groove width of the spiral cutting groove on the bent hose section 1810. In this way, by providing the transition section 1830, a gradual change in stiffness connection between the support hose section 1820 and the bent hose section 1810 is achieved.

[0077] The support hose section 1820 may have a third connection end 1821 connected to the second connection end 1832. From the third connection end 1821 to the second end 1802, the groove width of the spiral cutting groove gradually decreases. It can be understood that the maximum groove width of the spiral cutting groove on the support hose section 1820 is smaller than the minimum groove width of the spiral cutting groove on the transition section 1830. With such a setting, the required supportability and pushability of the support hose section 1820 are satisfied. In addition, the pitch of the spiral cutting groove on the support hose section 1820 may be gradually changing or equal.

[0078] Of course, from the first connection end 1831 to the second connection end 1832, the groove width L1 of the spiral cutting groove may gradually increase to L2, and from the third connection end 1821 to the second end 1802, the groove width of the spiral cutting groove may gradually increase from L2, and the pitch of the spiral cutting groove may be equal. It should be noted that in order to satisfy the supportability and pushability of the support hose section 1820, although the groove width of the spiral cutting groove on the support hose section 1820 gradually increases, the width of its maximum groove width is still at a relatively small value.

[0079] In an embodiment not shown, at least one of the pitch and the groove width of the helical cutting groove on the transition section 1830 may be gradually changed.

[0080] Referring jointly to Figure 14 and Figure 16 , the length of the transition section 1830 may be less than the length of the curved hose section 1810. With such a setting, it is avoided that the length of the transition section 1830 is greater than that of the curved hose section 1810, thereby affecting the supportability and pushability of the support hose section 1820. In an embodiment not shown, the length of the transition section 1830 may be equal to the length of the curved hose section 1810.

[0081] Referring jointly again to Figure 3 and Figure 11 , the outer diameter of the metal tube body 180 is constant from the first end 1801 to the second end 1802. In this way, the interventional catheter assembly 1 can have a certain degree of curvature and ensure the consistency of the outer diameter of the interventional catheter assembly 1. Referring jointly to Figure 3 and Figure 17 , the outer diameter of the metal tube body 180 may gradually increase from the first end 1801 to the second end 1802. In this way, the curvature of the interventional catheter assembly 1 is increased by the change of the outer diameter of the metal tube body 180.

[0082] In an embodiment of the present utility model, referring jointly to Figures 2 to 8 , the flexible hose 100 may further include an outer tube body 170. The inner tube body 150, the metal tube body 180 and the outer tube body 170 may be connected in sequence from the inside out. For example, the inner tube body 150 and the outer tube body 170 may be respectively connected to the metal tube body 180 through an adhesive layer 160. The outer tube body 170 is connected to the tube wall of the head end tube 110, and the outer diameter of the outer tube body 170 is consistent with the outer diameter of the head end tube 110. The tube wall of the head end tube 110 and the outer tube body 170 may be connected together by welding, fusing or pasting. With such a setting, the consistency of the outer diameter of the interventional catheter assembly 1 is maintained, and it is avoided that the tube wall of the head end tube 110 is connected to the inner tube body 150 or the metal tube body 180, resulting in inconsistent outer diameter of the interventional catheter assembly 1 and scratching the viscera.

[0083] The stiffness of the head end tube 110 may be less than the stiffness of the metal tube body 180. Further, the stiffness of the head end tube 110 may support the stiffness of the support tube section 101 and the curved tube section 102. With such a setting, the head end can be made soft enough to prevent the interventional catheter from piercing the viscera when moving in the lumen.

[0084] In another embodiment of the present utility model, referring jointly to Figure 3 , Figure 6 , Figure 9 and Figure 10, the flexible hose 100 may further include an outer tube body 170 and a braided layer 190. The inner tube body 150, the metal tube body 180, the braided layer 190, and the outer tube body 170 may be connected in sequence from the inside out. The material of the inner tube body 150 may be a polymer material, including but not limited to PTFE (Polytetrafluoroethylene, abbreviated as PTFE, which is a polymer obtained by polymerizing tetrafluoroethylene as a monomer), Pebax (PEBAX is a high-performance polymer, commonly known as nylon elastomer, which has the characteristics of both thermoplastic plastics and rubbers), PA (PA material is polyamide material, also known as nylon, which is a synthetic polymer material), etc. The inner tube body 150, the metal tube body 180, the braided layer 190, and the outer tube body 170 may be connected by bonding. For example, the metal tube body 180 and the inner tube body 150 are connected by coating an adhesive layer 160, and the metal tube body 180 and the outer tube body 170 are connected by coating an adhesive layer 160. The braided layer 190 may be formed by braiding stainless steel wires. Of course, it does not exclude being braided by other linear materials. The stiffness gradient can be partially adjusted by changing the configuration of the braided layer 190 (for example, changing the PIC count of the braid, the wire diameter, or the wire pitch). In this way, under the combined adjustment of the metal tube body 180, the inner tube body 150, the outer tube body 170, and the braided layer 190, the adjustment range of the stiffness gradient of the interventional catheter assembly 1 is wider, so that the applicable interventional catheter assembly 1 can be selected according to different usage scenarios.

[0085] Referring to Figure 3 , Figure 9 , Figure 10 and Figure 11 , the outer tube body 170 may have a third end corresponding to the first end 1801 and a fourth end corresponding to the second end 1802. From the third end to the fourth end, the stiffness of the outer tube body 170 is gradually changed. Different materials may be used on the outer tube body 170, which may be polymer materials, including but not limited to PTFE, Pebax, PA, composite carbon fiber, etc. From the third end to the fourth end, the thickness of the outer tube body 170 may be different, or even gradually changed. An outer tube body 170 may have a stiffness gradient by using different materials or polymer tubes with different thicknesses. Different outer tube bodies 170 use different materials or polymer tubes with different thicknesses, and their stiffnesses are different. In this way, under the combined adjustment of the metal tube body 180, the inner tube body 150, the outer tube body 170, and the braided layer 190, the adjustment range of the stiffness gradient of the interventional catheter assembly 1 is wider, so that the applicable interventional catheter assembly 1 can be selected according to different usage scenarios.

[0086] Referring to Figure 3 , Figure 7 , Figure 9 and Figure 11, the inner tube body 150 may be provided with a first through hole 151 and a plurality of second through holes 152. The first through hole 151 may penetrate from one end of the inner tube body 150 to the other end and form a first cavity 1511 in the middle of the inner tube body 150. The second through holes 152 may penetrate from one end of the inner tube body 150 to the other end and form second cavities 1521 at positions on the inner tube body 150 away from the central position of the inner tube body 150. The traction member 13 may be disposed through the second cavities 1521. The inner tube body 150 may be a multi-cavity tube. Specifically, one first through hole 151 and four second through holes 152 may be provided on the inner tube body 150. One first through hole 151 forms one first cavity 1511, and four second through holes 152 form four second cavities 1521. Thus, the inner tube body 150 forms a tube body with one large cavity and four small cavities. The traction member 13 may be disposed through the four second cavities 1521. When one of the two second cavities 1521 in the diagonal positions is bent by the traction of the traction member 13, the bent hose section 1810 and the support hose section 1820 are bent in the corresponding directions. The inner tube body 150 having multiple cavities has a greater tube hardness. Thus, the inner tube body 150 has a greater stiffness, and the interventional catheter assembly 1 having the inner tube body 150 can be applied to environments requiring stronger support and pushability.

[0087] Combined again Figure 3 , Figure 6 , Figure 8 , Figure 10 and Figure 11The inner tube body 150 may include a first lumen 153 and a plurality of second lumens 154. The outer periphery of the first lumen 153 may be recessed toward the center of the inner tube body 150 to form a plurality of recessed portions 155. The plurality of second lumens 154 and the plurality of recessed portions 155 may correspond to each other one by one and be located in the respective corresponding recessed portions 155. The traction member 13 may be inserted into the second lumen 154. The inner tube body 150 can be composed of a plurality of tube bodies. Specifically, the inner tube body 150 can include a first lumen 153 and four second lumen 154. The outer periphery of the first lumen 153 is recessed toward the center of the inner tube body 150 to form four recessed portions 155. The four second lumen 154 correspond to the four recessed portions 155 one by one and are located in the corresponding recessed portions 155. Thus, the inner tube body 150 is composed of a large single lumen tube and four small single lumen tubes. The traction member 13 can be passed through the four small single lumen tubes. When one of the two small single lumen tubes in diagonal positions is pulled and bent by the traction member 13, the bent hose segment 1810 and the supporting hose segment 1820 bend in the corresponding direction. The hardness of the inner tube body 150 with multiple tubes is lower than the hardness of the inner tube body 150 with multiple cavities, and based on the current technology, the diameter of the inner tube body 150 with multiple tubes can be smaller than the diameter of the inner tube body 150 with multiple cavities, so that the inner tube body 150 is relatively soft, and the interventional catheter assembly 1 with the inner tube body 150 can be applied to complex and twisted tube cavity environments. The inner tube body 150 with lower stiffness cooperates with the metal tube body 180 with gradually changing stiffness, so that the stiffness of the interventional catheter assembly 1 can be adjusted in a larger range, which is convenient for flexible position and angle adjustment in the tube cavity.

[0088] Combined with reference Figure 2 , Figure 3 and Figure 11 A hard transition section 104 may be provided between the intervention head end 103 and the curved hose section 1810. The hard transition section 104 may have a fourth connection end 1041 and a fifth connection end 1042. The fourth connection end 1041 may be connected to the intervention head end 103. The fifth connection end 1042 may be connected to the curved hose section 1810. From the fourth connection end 1041 to the fifth connection end 1042, the rigidity of the hard transition section 104 is gradually changed. Preferably, from the fourth connection end 1041 to the fifth connection end 1042, the rigidity of the hard transition section 104 is gradually reduced. In this way, the rigid transition section 104 is provided to achieve a gradual change in rigidity between the curved hose section 1810 and the head end tube 110.

[0089] In one embodiment of the present utility model, in conjunction with reference to Figure 2 , Figure 18 , Figure 19 and Figure 20, a mating member 220, a second rotating member 230, and an elastic member 240 may be provided on the main body 20. The switching member 201, the mating member 220, and the second rotating member 230 are all rotatable about the axis of the main body 20. The main body 20 may include a holding portion 23, a shaft body 24, and an end cap 25, and the shaft body 24 may be connected between the holding portion 23 and the end cap 25. The intervention catheter assembly 1 may be connected to the end cap 25. The switching member 201, the mating member 220, and the second rotating member 230 may be sleeved on the shaft body 24. In the illustrated embodiment, the switching member 201 is close to the holding portion 23 and the second rotating member 230 is close to the end cap 25. In other embodiments, it may also be that the switching member 201 is close to the end cap 25 and the second rotating member 230 is close to the holding portion 23. Similarly, the elastic member 240 may be connected to the holding portion 23, or may be connected to the end cap 25, or may also be connected to the shaft body 24. The traction member 13 may be in the form of a control wire. The mating member 220 may be used to drive the intervention head end 103 of the intervention catheter assembly 1 to move in a first plane through the first control wire 131. The second rotating member 230 may be used to drive the intervention head end 103 of the intervention catheter assembly 1 to move in a second plane through the second control wire 132. The two ends of the first control wire 131 may be fixedly connected to the connection between the intervention head end 103 and the flexible hose 100. At least a part of the portion between the two ends may be connected to the mating member 220. For example, the two ends of the first control wire 131 may be fixedly connected to the connection between the intervention head end 103 and the flexible hose 100. At this time, the first control wire 131 may be in an overall "U" shape, and an arc segment may be formed in the portion between the two ends of the first control wire 131, that is, the arc segment part in the "U" shape. A wire winding post may be provided on the mating member 220, and such an arc segment on the first control wire 131 may bypass the wire winding post, or a part of such an arc segment on the first control wire 131 may be wound around the wire winding post. Thus, when the mating member 220 rotates, the wire winding post may drive the first control wire 131 to move. For example, it may cause one end of the first control wire 131 in the "U" shape to extend and the other end to retract, thereby driving the intervention head end 103 of the intervention catheter assembly 1 to move in the first plane. Thus, it can be realized that the mating member 220 drives the intervention head end 103 of the intervention catheter assembly 1 to move in the first plane through the first control wire 131. The second rotating member 230 drives the intervention head end 103 of the intervention catheter assembly 1 to move in the second plane through the second control wire 132 may be similar thereto. The first plane and the second plane may be perpendicular to each other, or may be at any angle to each other. Under the combined action of the first control wire 131 and the second control wire 132, the flexible hose 100 of the intervention catheter assembly 1 can be bent at any angle, and thus the intervention head end 103 of the intervention catheter assembly 1 can reach a predetermined position at a predetermined angle.The elastic member 240 can abut against the switching member 201 to apply a force to the switching member 201. For example, one end of the elastic member 240 can be connected to the holding portion 23, and the other end can abut against the switching member 201. The elastic member 240 can be a spring or any other suitable form, and the force applied by the elastic member 240 to the switching member 201 can be generated by the deformation of the spring. The force applied by the elastic member 240 to the switching member 201 can exist continuously. Taking the elastic member 240 in the form of a spring as an example, the elastic member 240 in the form of a spring is located between the switching member 201 and the holding portion 23, and the elastic member 240 can always be in a compressed state, so as to continuously apply a force to the switching member 201.

[0090] Wherein, the switching member 201 is movable between a first position and a second position in the direction along the axis of the main body 20 (the illustrated B-B axis). The switching member 201 located at the first position can be connected to the mating member 220, and the switching member 201 located at the second position can be spaced apart from the mating member 220. That is to say, the second position can be farther away from the mating member 220 than the first position. The force applied by the elastic member 240 to the switching member 201 can keep the switching member 201 in the first position. The meaning that the force applied by the elastic member 240 to the switching member 201 can keep the switching member 201 in the first position is that, when the control handle is not affected by an external force as a whole, the elastic member 240 can move the switching member 201 located at the second position to the first position, and can continuously apply a force from the second position to the first position to the switching member 201 located at the first position. As Figure 20As shown, the switching member 201 is at the first position at this time. When the switching member 201 is at the first position, the cooperating member 220 can be connected to the switching member 201 and the switching member 201 can rotate synchronously. The cooperating member 220 can be rotatably connected to the switching member 201 at the first position in various forms such as snap connection or abutment. It can be understood that the connection here only means that the cooperating member 220 and the switching member 201 can at least rotate synchronously, and this connection between the cooperating member 220 and the switching member 201 should be detachable. When the switching member 201 moves from the first position to the second position, the connection between the cooperating member 220 and the switching member 201 will be disconnected. Under the action of the force applied by the elastic member 240 to the switching member 201, the switching member 201 and the cooperating member 220 can be in a state of mutual abutment. And a rotational damping can be formed between the cooperating member 220 and the second rotating member 230. The rotational damping means that the cooperating member 220 and the second rotating member 230 cannot be rotated relative to each other when a relatively small external force is applied. Here, the relatively small external force can be the elastic force generated by the deformation of the intervening catheter assembly 1 transmitted to the cooperating member 220 via the first control wire 131 and / or transmitted to the second rotating member 230 via the second control wire 132. At this time, the cooperating member 220 can be in abutment with the second rotating member 230. On the basis that the switching member 201 and the cooperating member 220 are in mutual abutment, the cooperating member 220 can be in mutual abutment with the second rotating member 230, so that a relatively large frictional force can exist between the cooperating member 220 and the second rotating member 230, thus realizing the formation of rotational damping between the cooperating member 220 and the second rotating member 230. Similarly, a winding assembly 250 can also be provided between the cooperating member 220 and the second rotating member 230. The cooperating member 220 abuts against the winding assembly 250, and the winding assembly 250 abuts against the second rotating member 230. In this way, on the basis that the switching member 201 and the cooperating member 220 are in mutual abutment, the cooperating member 220, the winding assembly 250 and the second rotating member 230 can also be in mutual abutment, so as to realize the formation of rotational damping between the cooperating member 220 and the second rotating member 230.

[0091] When the switching member 201 is at the second position, the switching member 201 can be disengaged from the cooperating member 220. The disengagement of the switching member 201 from the cooperating member 220 here can mean that the switching member 201 is not in contact with the cooperating member 220, or that although the switching member 201 is in contact with the cooperating member 220, the switching member 201 and the cooperating member 220 are not in a state of mutual abutment, so that the frictional force between the two can be very small, or that the switching member 201 and the cooperating member 220 are in a state of just contacting and there is no frictional force between them. At this time, it is equivalent to having no constraint on the cooperating member 220, and there is naturally no rotational damping between the cooperating member 220 and the second rotating member 230.

[0092] When such a control handle is in use, in its natural state, the switching member 201 is held at the first position under the action of the elastic member 240. At this time, there is a rotational damping between the mating member 220 and the second rotating member 230. Rotating the switching member 201 can drive the mating member 220 to rotate, thereby controlling the movement of the intervention head end 103 of the intervention catheter assembly 1 through the first control wire 131. Additionally, rotating the second rotating member 230 can control the movement of the intervention head end 103 of the intervention catheter assembly 1 through the second control wire 132. It can be understood that the external force applied when rotating the switching member 201 and the second rotating member 230 around the axis B-B of the main body 20 obviously needs to be greater than the force generated by the rotational damping. In this way, after the intervention head end 103 of the intervention catheter assembly 1 reaches a predetermined position at a predetermined angle, when the external force is removed, under the action of the rotational damping, the mating member 220 and the second rotating member 230 will remain at the position before the external force is removed, and thus the position locking of the intervention head end 103 of the intervention catheter assembly 1 is achieved through the rotational damping. Since the rotational damping between the mating member 220 and the second rotating member 230 always exists when the switching member 201 is held at the first position, the locking can be achieved at any time as long as the external force is removed. When it is necessary to unlock the position of the intervention head end 103 of the intervention catheter assembly 1, an external force can be applied to the switching member 201 in the direction along the axis B-B of the main body 20 to move the switching member 201 from the first position to the second position, and this external force needs to be greater than the force exerted by the elastic member 240 on the switching member 201. For example, when the elastic member 240 in the form of a spring is in a compressed state and continuously exerts a force on the switching member 201 pointing to the first position, an external force can be applied to overcome the force exerted by the elastic member 240 on the switching member 201 to move the switching member 201 from the first position to the second position. At this time, the external force can be from the first position to the second position. When the switching member 201 is located at the second position, the switching member 201 disengages from the mating member 220, and the rotational damping between the mating member 220 and the second rotating member 230 is released. Since the intervention catheter assembly 1 generates an elastic force due to deformation, there is no rotational damping between the mating member 220 and the second rotating member 230, and thus the intervention catheter assembly 1 cannot be restricted through the first control wire 131 and the second control wire 132. The intervention catheter assembly 1 can quickly reset under the action of the elastic force generated by its own deformation, and thus the unlocking and resetting of the intervention catheter assembly 1 are achieved.

[0093] With such a setting, when the switching member 201 is not subject to an external force, it will be located at the first position under the action of the elastic member 240. The cooperating member 220 is connected to the switching member 201 and can rotate synchronously with the switching member 201. Moreover, a rotational damping is formed between the cooperating member 220 and the second rotating member 230. At this time, manipulating the switching member 201 can drive the intervention head end 103 of the intervention catheter assembly 1 to move in the first plane through the first control wire 131, and manipulating the second rotating member 230 can drive the intervention head end 103 of the intervention catheter assembly 1 to move in the second plane through the second control wire 132. Under the action of the rotational damping, when the intervention head end 103 of the intervention catheter assembly 1 moves to any angle, it can remain at any angle without resetting. When it is necessary to reset the intervention head end 103 of the intervention catheter assembly 1, an external force can be applied to the switching member 201 to make the switching member 201 overcome the acting force of the elastic member 240 and reach the second position. The second position is farther away from the cooperating member 220 than the first position. At this time, the switching member 201 disengages from the cooperating member 220, so that the rotational damping between the cooperating member 220 and the second rotating member 230 is naturally released, and both the cooperating member 220 and the second rotating member 230 lose their constraints, and thus there is no locking effect on the intervention catheter assembly 1, and the intervention catheter assembly 1 will quickly complete the reset under the action of its own acting force. When such an operating handle assembly 2 is in use, the rotational damping always exists when driving the intervention head end 103 of the intervention catheter assembly 1 to move, and no additional operation is required to lock the position and angle of the intervention catheter assembly 1, and the locking is very convenient; and only by applying an external force to the switching member 201 can the unlocking and resetting of the intervention catheter assembly 1 be completed, which is equivalent to realizing one-key reset, so the unlocking is also very convenient and fast. Such an operating handle assembly 2 is more convenient for locking and unlocking the intervention catheter assembly 1, easy to operate, and the user experience of the operator can be better.

[0094] Refer to in combination Figure 2 、 Figure 19 、 Figure 20 and Figure 21, a wire winding assembly 250 can be provided on the main body 20. The wire winding assembly 250 can be located between the fitting 220 and the second rotating member 230. When the switching member 201 is in the first position, the switching member 201, the fitting 220, the wire winding assembly 250, and the second rotating member 230 can be sequentially abutted to form a rotational damping between the fitting 220 and the second rotating member 230. The wire winding assembly 250 can change the extending directions of the first control wire 131 and the second control wire 132. The first control wire 131 and the second control wire 132 extending along the axis B-B of the main body 20 can enter the interior of the wire winding assembly 250 at the openings on the side wall of the wire winding assembly 250, and under the guidance of the steering column 251 inside the wire winding assembly 250, the first control wire 131 and the second control wire 132 that originally extended along the axis B-B of the main body 20 can be turned to extend along the direction where the axis B-B of the main body 20 is located, so as to extend axially along the interventional catheter assembly 1 to the interventional head end 103. At least a part of both the first control wire 131 and the second control wire 132 can be wound around the wire winding assembly 250, so as to ensure that the extending directions of both the first control wire 131 and the second control wire 132 can be changed by the wire winding assembly 250, so that the wire routing inside the operating handle assembly 2 can be more reasonable, and the first control wire 131 and the second control wire 132 inside the operating handle assembly 2 can be prevented from being wound around each other. The setting of the wire winding assembly 250 can facilitate the realization of driving the movement of the interventional head end 103 by the rotation of the fitting 220 and the second rotating member 230 around the axis B-B of the main body 20. Moreover, the setting of the wire winding assembly 250 can prevent the first control wire 131 and the second control wire 132 inside the operating handle assembly 2 from being wound around each other after the fitting 220 and / or the second rotating member 230 rotates.

[0095] Referring to Figure 2 and Figure 19 , when the switching member 201 is in the first position, the fitting 220 and the wire winding assembly 250 can be abutted through the friction plate 260. A friction plate 260 can be provided between the fitting 220 and the wire winding assembly 250. When the switching member 201 is in the first position, the fitting 220 and the wire winding assembly 250 are tightly abutted. In fact, the fitting 220 is abutted to the wire winding assembly 250 through the friction plate 260. The setting of the friction plate 260 can increase the friction force between the fitting 220 and the wire winding assembly 250, so that when the switching member 201 is in the first position, the rotational damping between the fitting 220 and the second rotating member 230 can be greater. Thus, the position locking of the interventional head end 103 of the interventional catheter assembly 1 automatically realized by removing the external force can be more stable.

[0096] When the switching member 201 is in the first position, the winding assembly 250 and the second rotating member 230 can be abutted through the friction plate 260. A friction plate 260 can be provided between the winding assembly 250 and the second rotating member 230. When the switching member 201 is in the first position, the winding assembly 250 and the second rotating member 230 are tightly abutted. In fact, the winding assembly 250 is abutted to the second rotating member 230 through the friction plate 260. The setting of the friction plate 260 can increase the frictional force between the winding assembly 250 and the second rotating member 230, so that when the switching member 201 is in the first position, the rotational damping between the winding assembly 250 and the second rotating member 230 can be greater. Thus, the position locking of the intervening head end 103 of the intervening catheter assembly 1 automatically achieved by removing the external force can be more stable.

[0097] Refer to Figure 22 , a limiting groove with an opening facing the fitting member 220 can be provided on the switching member 201, and a limiting block protruding towards the switching member 201 can be provided on the fitting member 220. When the switching member 201 is in the first position, the limiting block can be snapped into the limiting groove. The limiting block and the limiting groove can be in any mutually matching form. For example, the limiting block can be a cylindrical block, and the limiting groove can be a cylindrical groove. The limiting block and the limiting groove can be in a snap-fit connection. In this way, when the switching member 201 is in the first position, the connection between the switching member 201 and the fitting member 220 is simpler, and when the switching member 201 moves from the first position to the second position, the connection between the switching member 201 and the fitting member 220 is easy to disassemble. The overall structure of such an operating handle assembly 2 is simple and easy to implement.

[0098] Furthermore, a plurality of first tooth-shaped protrusions 2011 protruding towards the fitting member 220 can be provided on the switching member 201, the limiting grooves can be multiple, and the multiple limiting grooves can be respectively formed between adjacent two first tooth-shaped protrusions 2011. A plurality of second tooth-shaped protrusions 221 protruding towards the switching member 201 can be provided on the fitting member 220, and the plurality of second tooth-shaped protrusions 221 can respectively form the limiting blocks. When the switching member 201 is in the first position, a connection similar to gear engagement can be formed between the plurality of first tooth-shaped protrusions 2011 and the plurality of second tooth-shaped protrusions 221, so that the switching member 201 drives the fitting member 220 to rotate more stably. The first tooth-shaped protrusions 2011 can be tooth-shaped protrusions in any suitable form such as end face teeth, conical teeth or bevel gears. Similarly, the plurality of second tooth-shaped protrusions 221 can also be tooth-shaped protrusions in any suitable form such as end face teeth, conical teeth or bevel gears.

[0099] Combined with reference to Figure 20 and Figure 22, the fitting 220 may have a first initial position corresponding to the initial state of the interventional catheter assembly 1. A first reset member 270 may be provided on the main body 20. The first reset member 270 may be connected to the fitting 220 and apply a force to the fitting 220 to keep the fitting 220 in the first initial position. The first reset member 270 may be a torsion spring or any other suitable form. Due to the provision of the first reset member 270, when the switching member 201 moves from the first position to the second position, the switching member 201 disengages from the fitting 220, and the rotational damping between the fitting 220 and the second rotating member 230 is also released. Thus, the fitting 220 returns to the first initial position under the action of the first reset member 270. During this process, the interventional catheter assembly 1 is driven by the first control wire 131 to return to the initial state faster. When such an operating handle assembly 2 is unlocked, not only does the elastic force generated by the deformation of the interventional catheter assembly 1 itself cause the interventional catheter assembly 1 to reset, but also under the action of the first reset member 270, the fitting 220 can also drive the interventional catheter assembly 1 to reset. Thus, the reset of the interventional catheter assembly 1 after the operating handle assembly 2 is unlocked can be faster.

[0100] Refer to Figure 23 , the fitting 220 may have a first winding portion 222. One end of the first reset member 270 may be fixedly connected to the main body 20, and the other end is wound around the first winding portion 222. The first reset member 270 is wound around the first winding portion 222. Such a setting of the first reset member 270 can make the overall structure simpler and easier to implement. Moreover, such a first reset member 270 does not occupy the space of the main body 20 in the direction along the axis B-B, which can make the internal structure of the operating handle assembly 2 more compact.

[0101] Combined with reference to Figure 20 and Figure 23, the second rotating member 230 may have a second initial position corresponding to the initial state of the interventional catheter assembly 1. A second reset member 280 may be provided on the main body 20. The second reset member 280 may be connected to the second rotating member 230 and apply a force to the second rotating member 230 to keep the second rotating member 230 in the second initial position. The second reset member 280 may be a torsion spring or any other suitable form. Due to the provision of the second reset member 280, when the switching member 201 moves from the first position to the second position, the switching member 201 disengages from the engaging member 220, and the rotational damping between the engaging member 220 and the second rotating member 230 is also released. Thus, the second rotating member 230 returns to the second initial position under the action of the second reset member 280. During this process, the interventional catheter assembly 1 will be driven by the second control wire 132 to return to the initial state faster. When such an operating handle assembly 2 is unlocked, not only does the elastic force generated by the deformation of the interventional catheter assembly 1 itself cause the interventional catheter assembly 1 to reset, but also under the action of the second reset member 280, the second rotating member 230 can also drive the interventional catheter assembly 1 to reset. Thus, the reset of the interventional catheter assembly 1 after the operating handle assembly 2 is unlocked can be faster.

[0102] Referring to Figure 2 and Figure 21 , the second rotating member 230 may have a second winding portion 231. One end of the second reset member 280 may be fixedly connected to the main body 20, and the other end is wound around the second winding portion 231. The second reset member 280 is wound around the second winding portion 231. Such a setting of the second reset member 280 can make the overall structure simpler and easier to implement. Moreover, such a second reset member 280 does not occupy the space of the main body 20 in the direction along the axis B-B, which can make the internal structure of the operating handle assembly 2 more compact.

[0103] The traction member 13 may include a first control wire 131 and a second control wire 132. The engaging member 220 may be used to drive the interventional head end 103 to move in the first plane through the first control wire 131, and the second rotating member 230 may be used to drive the interventional head end 103 to move in the second plane through the second control wire 132. The force exerted on the engaging member 220 by the elastic force generated by the deformation of the interventional catheter assembly 1 transmitted through the first control wire 131 may be less than the damping force exerted on the engaging member 220 by the rotational damping. The force exerted on the second rotating member 230 by the elastic force generated by the deformation of the interventional catheter assembly 1 transmitted through the second control wire 132 may be less than the damping force exerted on the second rotating member 230 by the rotational damping. This can ensure that when there is rotational damping between the engaging member 220 and the second rotating member 230, the interventional catheter assembly 1 will not reset under the action of its own elastic force, thereby ensuring the stability of the operating handle assembly 2 when locking the position of the interventional head end 103 of the interventional catheter assembly 1.

[0104] In another embodiment of the present utility model, with reference to Figure 24 and Figure 26 , a damping member 290, a first rotating member 210, and a second rotating member 230 may be provided on the main body 20. Both the first rotating member 210 and the second rotating member 230 are rotatable about the axis of the main body 20. The main body 20 may include a holding portion 23, a shaft body 24 (not shown in the figure), and an end cap 25. The shaft body 24 may be connected between the holding portion 23 and the end cap 25. The interventional catheter assembly 1 may be connected to the end cap 25. The switching member 201, the first rotating member 210, and the second rotating member 230 may be sleeved on the shaft body 24. In the illustrated embodiment, the first rotating member 210 is close to the holding portion 23 while the second rotating member 230 is close to the end cap 25. In other embodiments, it may also be that the first rotating member 210 is close to the end cap 25 while the second rotating member 230 is close to the holding portion 23. The relative positional relationship among the switching member 201, the first rotating member 210, and the second rotating member 230 may be arbitrary. For example, as shown in Figure 24 , the switching member 201, the first rotating member 210, and the second rotating member 230 may be arranged in sequence. In other embodiments not shown, it may also be that the second rotating member 230, the first rotating member 210, and the switching member 201 are arranged in sequence, or the first rotating member 210, the switching member 201, and the second rotating member 230 are arranged in sequence. Here, the first rotating member 210 and the second rotating member 230 are only for distinction and are not specifically defined.

[0105] With reference to Figure 2 , Figure 27 and Figure 28 , the first rotating member 210 may be used to drive the intervention head end 103 of the interventional catheter assembly 1 to move in a first plane through the first control wire 131, and the second rotating member 230 may be used to drive the intervention head end 103 of the interventional catheter assembly 1 to move in a second plane through the second control wire 132. The first rotating member 210 may include a first rotating sleeve 211 and a first connecting member 212. The first rotating sleeve 211 may be connected to the first connecting member 212 in various forms such as snap connection, welding, or threaded connection and sleeved on the first connecting member 212. The operator may rotate the first rotating sleeve 211 to drive the first connecting member 212 to rotate. The fixing methods and operation processes of the first control wire 131 and the second control wire 132 may be the same as those in the above embodiments and will not be described in detail herein.

[0106] The switching member 201 is rotatable between a first angular position and a second angular position about the axis of the main body 20, and the damping member 290 is movable between a first position and a second position along the direction of the axis of the main body 20 (the axis C-C shown in the figure). The switching member 201 can abut against the damping member 290. The surface of the switching member 201 that abuts against the damping member 290 can be helically extended or inclinedly extended about the axis C-C of the main body 20. Thus, when the switching member 201 rotates about the axis C-C of the main body 20, the damping member 290 abutted by the switching member 201 will move along the axis C-C of the main body 20. The first position can be closer to the first rotating member 210 than the second position. When the switching member 201 is in the first angular position, the damping member 290 can be in the first position. When the switching member 201 is in the second angular position, the damping member 290 can be in the second position. Thus, when the damping member 290 is in the first position, it can abut tightly against the first rotating member 210, or when it is in the second position, it can be disengaged from the first rotating member 210, which will be described in detail below. For the damping member 290 between the first position and the second position, the damping member 290 contacts the first rotating member 210, and there are different magnitudes of frictional forces between the damping member 290 and the first rotating member 210 according to the distance between the damping member 290 and the first position. For example, the closer the damping member 290 is to the first position, the greater the frictional force between the damping member 290 and the first rotating member 210. When the damping member 290 is in the first position, that is, abutting tightly against the first rotating member 210, there is a large frictional force between the damping member 290 and the first rotating member 210 at this time. When the damping member 290 moves from the first position to the second position, the frictional force between the damping member 290 and the first rotating member 210 gradually decreases. When the damping member 290 is in the second position, that is, disengaged from the first rotating member 210 or having only a small frictional force with the first rotating member 210. The first position and the second position here are only for distinction and have no special limitations. When the switching member 201 is in the first angular position, the damping member 290 can be in the first position. At this time, the damping member 290 can abut against the first rotating member 210 so that a rotational damping can be formed between the first rotating member 210 and the second rotating member 230. When the switching member 201 is in the first angular position, the switching member 201 abuts against the damping member 290 and makes the damping member 290 in the first position. The first rotating member 210 can include a first rotating sleeve 211 and a first connecting member 212. The first rotating sleeve 211 can be connected to the first connecting member 212. The damping member 290 in the first position can abut against the first connecting member 212, so that the switching member 201, the damping member 290, and the first rotating member 210 can abut tightly in sequence. The so-called abutment of the damping member 290 against the first connecting member 212 can be a direct abutment between the two. It can also be that the damping member 290 indirectly abuts against the first connecting member 212, and the indirect abutment can be realized through various forms of connecting members such as an elastic member 240 or a friction plate 260.The meaning of rotational damping is that when a relatively small external force is applied, such an external force cannot cause the first rotating member 210 and the second rotating member 230 to rotate relative to each other. The interventional catheter assembly 1 deforms to generate an elastic force. This relatively small external force can be the elastic force transmitted to the first rotating member 210 through the first control wire 131, or the elastic force transmitted to the second rotating member 230 through the second control wire 132. At this time, the first rotating member 210 can be in contact with the second rotating member 230. On the basis that the switching member 201 is in tight contact with the damping member 290 and the damping member 290 is in tight contact with the first rotating member 210, the first rotating member 210 can be in tight contact with the second rotating member 230, so that there can be a large frictional force between the first rotating member 210 and the second rotating member 230, thus realizing the formation of rotational damping between the first rotating member 210 and the second rotating member 230. Similarly, there can also be a winding assembly 250 provided between the first rotating member 210 and the second rotating member 230. The first rotating member 210 abuts against the winding assembly 250, and the winding assembly 250 abuts against the second rotating member 230. In this way, on the basis that the switching member 201 is in tight contact with the damping member 290 and the damping member 290 is in tight contact with the first rotating member 210, the first rotating member 210, the winding assembly 250, and the second rotating member 230 can also be in tight contact in sequence, thus realizing the formation of rotational damping between the first rotating member 210 and the second rotating member 230.

[0107] When the switching member 201 is located between the first angular position and the second angular position, the damping member 290 can be located between the first position and the second position. At this time, the damping between the first rotating member 210 and the second rotating member 230 is relatively small, less than the rotational damping between the first rotating member 210 and the second rotating member 230 when the switching member 201 is located at the first angular position. The interventional catheter assembly 1 will slowly reset under the action of the elastic force generated by its own deformation, which can avoid damage to the viscera caused by too fast resetting.

[0108] When the switching member 201 is in the second angular position, the damping member 290 can be in the second position. At this time, the damping member 290 can be disengaged from the first connecting member 212, so that the damping member 290 can be disengaged from the first rotating member 210 at this time; or at this time, there can be only a small frictional force between the damping member 290 and the first connecting member 212, so that there can be only a small frictional force between the damping member 290 and the first rotating member 210 at this time. At this time, it can be considered that the rotational damping is released. The damping member 290 in the second position can be disengaged from the first connecting member 212, which can mean that the damping member 290 is not in contact with the first connecting member 212, or that although the damping member 290 is in contact with the first connecting member 212, the damping member 290 and the first connecting member 212 are not in a state of being pressed against each other. Thus, the frictional force between the two can be very small, or the damping member 290 and the first connecting member 212 are in a state of just contacting each other, and there is no frictional force between the two in the just-contact state. At this time, it is equivalent to that the damping member 290 has no constraint on the first rotating member 210, and there is naturally no rotational damping between the first rotating member 210 and the second rotating member 230.

[0109] When such an operating handle assembly 2 is in use, when the switching member 201 is in the first angular position, the damping member 290 is in the first position at this time. The damping member 290 abuts against the first rotating member 210. There is a rotational damping between the first rotating member 210 and the second rotating member 230. Rotating the first rotating member 210 can control the movement of the intervention head end 103 of the intervention catheter assembly 1 through the first control wire 131, and rotating the second rotating member 230 can control the movement of the intervention head end 103 through the second control wire 132. It can be understood that the external force applied around the axis C-C of the main body 20 when rotating the first rotating member 210 and the second rotating member 230 obviously needs to be greater than the damping force generated by the rotational damping. After the intervention head end 103 reaches the predetermined position at a predetermined angle in this way, when the external force is removed, under the action of the rotational damping, the first rotating member 210 and the second rotating member 230 will remain in the position before the external force is removed and will not rotate, thus realizing the position locking of the intervention head end 103 through the rotational damping. Since the switching member 201 remains in the first angular position, the damping member 290 remains in the first position, and the rotational damping between the first rotating member 210 and the second rotating member 230 always exists, and locking can be achieved at any time as long as the external force is removed. When it is necessary to unlock the position of the intervention head end 103, an external force around the axis C-C of the main body 20 can be applied to the switching member 201 to make the switching member 201 rotate from the first angular position to the second angular position. When the switching member 201 is in the second angular position, so that the damping member 290 is in the second position, the damping member 290 no longer abuts against the first rotating member 210, and the rotational damping between the first rotating member 210 and the second rotating member 230 is released. Since the intervention catheter assembly 1 generates an elastic force due to deformation, there is no rotational damping between the first rotating member 210 and the second rotating member 230, and thus the intervention catheter assembly 1 cannot be restricted through the first control wire 131 and the second control wire 132. The intervention catheter assembly 1 can quickly reset under the action of the elastic force generated by its own deformation, thus realizing the unlocking and resetting of the intervention catheter assembly 1.

[0110] When the switching member 201 is in the first angular position, the damping member 290 is in the first position at this time, and it can be considered to be in a locked state. After the intervening head end 103 of the intervening catheter assembly 1 reaches a predetermined position at a predetermined angle, the position of the intervening head end 103 can be locked; when the switching member 201 is in the second angular position, the damping member 290 is in the second position at this time, and it can be considered to be in an unlocked state. The intervening catheter assembly 1 can be quickly reset under the action of the elastic force generated by its own deformation. When the switching member 201 is between the first angular position and the second angular position, the damping member 290 is between the first position and the second position at this time, and there is damping between the first rotating member 210 and the second rotating member 230, but the damping at this time is less than the rotational damping in the locked state. It can be understood that through reasonable design, when the switching member 201 is between the first angular position and the second angular position, the intervening catheter assembly 1 can be reset under the action of the elastic force generated by its own deformation, but the reset speed at this time is slower than the reset speed in the unlocked state, and the closer the switching member 201 is to the second angular position, the smaller the damping between the first rotating member 210 and the second rotating member 230, and the reset speed of the intervening catheter assembly 1 can be controlled.

[0111] It should be noted that the first angular position and the second angular position mentioned here may not be precise angular position points. The first angular position and the second angular position can be two angular position intervals respectively. When in the locked state, the angular position where the switching member 201 is located can be considered to be within the angular position interval corresponding to the first angular position, and the same applies to the angular position interval corresponding to the second angular position. Similarly, the first position and the second position mentioned here may not be precise position points. The first position and the second position can be two position intervals respectively. When in the locked state, the position where the damping member 290 is located can be considered to be within the position interval corresponding to the first position. At this time, the damping member 290 abuts against the first rotating member 210, so that there is a sufficiently large rotational damping between the first rotating member 210 and the second rotating member 230, and the same applies to the position interval corresponding to the second position. Among them, it can be considered that the switching member 201 within the angular position interval corresponding to the first angular position can make the damping member 290 located within the position interval corresponding to the first position; the switching member 201 within the angular position interval corresponding to the second angular position can make the damping member 290 located within the position interval corresponding to the second position.

[0112] Exemplarily, refer to Figure 24 and Figure 26, at least one groove can be provided on the surfaces of the first rotating sleeve 211 and the second rotating sleeve 232, so that the operator can put fingers into the grooves and then rotate the first rotating sleeve 211 or the second rotating sleeve 232. In the initial state, the grooves of the first rotating sleeve 211 and the second rotating sleeve 232 can be in position correspondence. At this time, the switching member 201 can be located at the second angular position, and the damping member 290 can be located at the second position. In this way, when performing the reset operation, the operator can determine whether the operation is in place by checking whether the grooves of the first rotating sleeve 211 and the second rotating sleeve 232 are aligned.

[0113] With such a setting, when the switching member 201 is at the first angular position, the switching member 201 abuts against the damping member 290 and makes the damping member 290 located at the first position, so that there is a rotational damping between the first rotating member 210 and the second rotating member 230. In this way, when rotating the first rotating member 210 and / or the second rotating member 230 to drive the intervention head end 103 of the intervention catheter assembly 1 to move, the rotational damping enables the intervention head end 103 to be locked at any position and angle. Unless the rotational damping is overcome again and the first rotating member 210 and / or the second rotating member 230 are rotated, the position and angle of the intervention head end 103 will not change. When the position and angle of the intervention head end 103 need to be reset, only an external force needs to be applied to the switching member 201 to make the switching member 201 leave the first angular position, that is, to rotate the switching member 201 by a certain angle from the first angular position to the second angular position. At this time, the damping between the first rotating member 210 and the second rotating member 230 is not sufficient to restrict the reset of the intervention catheter assembly 1 under its own elastic force, and the intervention catheter assembly 1 can achieve a reset with a controllable deformation speed. On this basis, when the switching member 201 is rotated to the second angular position, at this time the damping member 290 is located at the second position, and the rotational damping between the first rotating member 210 and the second rotating member 230 is released, and the intervention head end 103 can be naturally reset. At this time, the reset speed of the intervention catheter assembly 1 is relatively fast. When such an operating handle assembly 2 is used, the locking and unlocking of the position and angle of the intervention head end 103 are very convenient. There is no need to perform additional operations to lock the position and angle of the intervention head end 103. When unlocking, only the switching member 201 needs to be rotated to make it leave the first angular position, and the intervention catheter assembly 1 can be reset. When the switching member 201 is rotated to the second angular position, the intervention head end 103 can be quickly reset, which is equivalent to being able to achieve one-key unlocking. The locking and unlocking operations of such an operating handle assembly 2 are simpler, and the operator's use experience can be better.

[0114] Referring to Figure 25 and Figure 26, a first reset member 270 may also be provided on the main body 20. The first reset member 270 may be connected to the switching member 201 and apply a force to the switching member 201 to keep the switching member 201 in the first angular position. The first reset member 270 may be connected to any suitable position on the main body 20 as needed. For example, the first reset member 270 may be connected to the shaft body 24, may also be connected to the holding portion 23, or may also be connected to the end cap 25. The first reset member 270 may be connected to the switching member 201 to apply a force to the switching member 201. Refer to Figure 25 , the switching member 201 may have a winding member 2013, and the first reset member 270 may be connected to the switching member 201 by winding around the winding member 2013. Of course, the first reset member 270 may be a torsion spring or other various suitable forms. According to different forms of the first reset member 270, the first reset member 270 may be connected to the main body 20 and the switching member 201 respectively through various suitable forms. The force applied by the first reset member 270 to the switching member 201 may cause the switching member 201 to rotate or cause the switching member 201 to have a tendency to rotate. When the entire operating handle assembly 2 is not affected by external forces, the first reset member 270 may cause the switching member 201 located at the second angular position to rotate to the first angular position, and may continuously apply a force pointing from the second angular position to the first angular position to the switching member 201 located at the first angular position, so as to keep the switching member 201 in the first angular position. It can be understood that the force pointing from the second angular position to the first angular position here may have a direction around the axis C-C of the main body 20, and the acting form may be similar to torque.

[0115] When such an operating handle assembly 2 is in use, in its natural state, the switching member 201 is held at the first angular position under the action of the first restoring member 270. At this time, the damping member 290 is located at the first position, the damping member 290 abuts against the first rotating member 210, and there is a rotational damping between the first rotating member 210 and the second rotating member 230. Rotating the first rotating member 210 can control the movement of the intervention head end 103 of the intervention catheter assembly 1 through the first control wire 131, and rotating the second rotating member 230 can control the movement of the intervention head end 103 through the second control wire 132. It can be understood that the external force applied around the axis C-C of the main body 20 when rotating the first rotating member 210 and rotating the second rotating member 230 obviously needs to be greater than the damping force generated by the rotational damping. After the intervention head end 103 reaches the predetermined position at a predetermined angle in this way, when the external force is removed, under the action of the rotational damping, the first rotating member 210 and the second rotating member 230 will remain in the position before the external force is removed and will not rotate, thus realizing the position locking of the intervention head end 103 through the rotational damping. Since the damping member 290 remains at the first position when the switching member 201 is held at the first angular position, the rotational damping between the first rotating member 210 and the second rotating member 230 always exists, and the locking can be achieved at any time as long as the external force is removed. When it is necessary to unlock the position of the intervention head end 103, an external force around the axis C-C of the main body 20 can be applied to the switching member 201 to make the switching member 201 rotate from the first angular position to the second angular position, and this external force needs to be greater than the acting force of the first restoring member 270 on the switching member 201. For example, the first restoring member 270 in the form of a torsion spring continuously applies a force to keep the switching member 201 at the first angular position, and an external force can be applied to overcome the acting force of the first restoring member 270 on the switching member 201 to make the switching member 201 rotate from the first angular position to the second angular position. At this time, the external force can be from the first angular position around the axis C-C of the main body 20 and point to the second angular position. When the switching member 201 is located at the second angular position, and thus the damping member 290 is located at the second position, the damping member 290 no longer abuts against the first rotating member 210, and the rotational damping between the first rotating member 210 and the second rotating member 230 is released. The intervention catheter assembly 1 generates an elastic force due to deformation. There is no rotational damping between the first rotating member 210 and the second rotating member 230, so it is impossible to form a constraint on the intervention catheter assembly 1 through the first control wire 131 and the second control wire 132. The intervention catheter assembly 1 can quickly reset under the action of the elastic force generated by its own deformation, thus realizing the unlocking and resetting of the intervention catheter assembly 1.

[0116] When no external force acts on the switching member 201, the switching member 201 is held at the first angular position under the action of the first reset member 270. At this time, the switching member 201 abuts against the damping member 290 and makes the damping member 290 located at the first position, so that there is a rotational damping between the first rotating member 210 and the second rotating member 230 under normal conditions. In this way, when rotating the first rotating member 210 and / or the second rotating member 230 to drive the intervention head end 103 of the intervention catheter assembly 1 to move, the rotational damping enables the intervention head end 103 to be locked at any position and angle. Unless the rotational damping is overcome again and the first rotating member 210 and / or the second rotating member 230 are rotated, the position and angle of the intervention head end 103 will not change. When the position and angle of the intervention head end 103 need to be reset, only an external force needs to be applied to the switching member 201 to make the switching member 201 rotate to the second angular position, and the rotational damping between the first rotating member 210 and the second rotating member 230 is reduced or even released, and the intervention head end 103 can be reset naturally. When such an operating handle assembly 2 is in use, the locking and unlocking of the position and angle of the intervention head end 103 are very convenient. There is no need to perform additional operations to lock the position and angle of the intervention head end 103. When unlocking, only the switching member 201 needs to be rotated to the second angular position, and the intervention head end 103 can be quickly reset, which is equivalent to realizing one-key unlocking. The locking and unlocking operations of such an operating handle assembly 2 are simpler, and the operator's use experience can be better.

[0117] Refer to in combination Figure 2 、 Figure 29 、 Figure 30 and Figure 31, an elastic member 240 can be provided on the main body 20. The elastic member 240 can abut between the damping member 290 and the first rotating member 210, and the elastic member 240 can apply an elastic force to the damping member 290 to keep the damping member 290 in the second position. When the damping member 290 is not subject to other constraints, for example, when the switching member 201 is in the second angular position, the elastic force applied by the elastic member 240 to the damping member 290 can keep the damping member 290 in the second position, or can cause the damping member 290 to move from the first position to the second position. The elastic force applied by the elastic member 240 to the damping member 290 can be considered to be directed from the first position to the second position. The elastic member 240 can be a spring or various other forms. Taking the elastic member 240 as a spring as an example, when the switching member 201 is in the first angular position, the switching member 201 presses against the damping member 290 to make the damping member 290 in the first position. At this time, the elastic member 240 in the form of a spring is in a compressed state, and the damping member 290 presses against the first rotating member 210 through the elastic member 240, which can make the rotational damping between the first rotating member 210 and the second rotating member 230 greater. When the switching member 201 is in the second angular position, the switching member 201 no longer presses against the damping member 290. Under the action of the elastic force of the elastic member 240, the damping member 290 can move from the first position to the second position faster. With the setting of the elastic member 240, when the switching member 201 is in the first angular position, the damping member 290 presses against the first rotating member 210 through the elastic member 240, which can make the rotational damping between the first rotating member 210 and the second rotating member 230 greater, and the position locking of the intervention head end 103 of the intervention catheter assembly 1 by the operation handle assembly 2 is more stable; when the switching member 201 is in the second angular position, the damping member 290 can quickly move from the first position to the second position under the action of the elastic member 240, and the position unlocking of the intervention head end 103 by the operation handle assembly 2 is faster.

[0118] The acting force applied by the first reset member 270 to the switching member 201 can be greater than the elastic force of the elastic member 240 acting on the damping member 290. When the switching member 201 is located at the first angular position, the damping member 290 is located at the first position. The first reset member 270 applies an acting force to the switching member 201 to keep the switching member 201 at the first angular position. It can be considered that the acting force of the first reset member 270 on the switching member 201 has the effect of keeping the damping member 290 at the first position. Under the action of the elastic member 240, for the damping member 290 located at the first position, the elastic force applied by the elastic member 240 to the damping member 290 points from the first position to the second position. The elastic force applied by the elastic member 240 to the damping member 290 has a tendency to move the damping member 290 from the first position to the second position, which is equivalent to being opposite to the action of the first reset member 270 on the damping member 290. The acting force applied by the first reset member 270 to the switching member 201 is greater than the elastic force of the elastic member 240 acting on the damping member 290, which can ensure that when the switching member 201 is located at the first angular position, the damping member 290 can be stably located at the first position, and thus can ensure that the operating handle assembly 2 can lock the position of the intervention head end 103, improving the stability of the overall device during use.

[0119] With reference to Figure 2 、 Figure 24 、 Figure 29 and Figure 30 ,the elastic member 240 and the first rotating member 210 can be in abutment through a friction plate 260. A friction plate 260 can be provided between the elastic member 240 and the first rotating member 210. When the switching member 201 is located at the first angular position, the damping member 290 is located at the first position, and the damping member 290 is in abutment with the first rotating member 210 through the elastic member 240. In fact, the elastic member 240 is in abutment with the first rotating member 210 through the friction plate 260. The setting of the friction plate 260 can increase the frictional force between the elastic member 240 and the first rotating member 210. Thus, the position locking of the intervention head end 103 automatically achieved after removing the external force can be more stable. This also makes the position locking of the operating handle assembly 2 on the intervention head end 103 more stable.

[0120] With reference to Figure 2 、 Figure 29 and Figure 30, the switching member 201 may include a first mating surface 2012 that spirally or obliquely extends around the axis C-C of the main body 20. The damping member 290 may include a second mating surface 291 that spirally or obliquely extends around the axis C-C of the main body 20. The first mating surface 2012 may abut against the second mating surface 291. Since both the first mating surface 2012 and the second mating surface 291 spirally or obliquely extend around the axis C-C of the main body 20, through the abutment between the first mating surface 2012 and the second mating surface 291, the rotation of the switching member 201 around the axis C-C of the main body 20 can be converted into the movement of the damping member 290 along the direction of the axis C-C of the main body 20, so that when the switching member 201 is at the first angular position, the damping member 290 is at the first position, and when the switching member 201 is at the second angular position, the damping member 290 is at the second position. There is a first circumferential direction and a second circumferential direction opposite thereto around the axis C-C of the main body 20. For example, the first circumferential direction may be the clockwise direction around the axis C-C of the main body 20, and the second circumferential direction may be the counterclockwise direction around the axis C-C of the main body 20. The first mating surface 2012 may gradually approach the damping member 290 along the first circumferential direction. At this time, the switching member 201 can be rotated along the first circumferential direction to drive the damping member 290 to move along the direction from the second position to the first position; the first mating surface 2012 may also gradually approach the damping member 290 along the second circumferential direction. At this time, the switching member 201 can be rotated along the second circumferential direction to drive the damping member 290 to move along the direction from the second position to the first position. Such an operating handle assembly 2 can design the inclination direction of the first mating surface 2012 and / or the second mating surface 291 as needed to realize rotating the switching member 201 from the first angular position to the second angular position along the first circumferential direction, or to realize rotating the switching member 201 from the first angular position to the second angular position along the second circumferential direction. In this way, it is realized that the rotation of the switching member 201 around the axis C-C of the main body 20 causes the damping member 290 to move along the direction of the axis C-C of the main body 20. Such a first mating surface 2012 and a second mating surface 291 are easy to produce and process, and the overall structure is also simpler.

[0121] Specifically, the first mating surface 2012 in the direction along the axis C-C of the main body 20 may have a first mating end 2012a close to the first rotating member 210. The second mating surface 291 in the direction along the axis C-C of the main body 20 may have a second mating end 2911 away from the first rotating member 210 and a third mating end 2912 close to the first rotating member 210. When the switching member 201 is located at the first angular position, the first mating end 2012a may abut against the second mating end 2911 so that the damping member 290 may be located at the first position. When the switching member 201 is located at the second angular position, the first mating end 2012a may abut against the third mating end 2912 so that the damping member 290 may be located at the second position. When the first mating end 2012a abuts against the second mating end 2911, the switching member 201 is located at the first angular position at this time, and the damping member 290 is closer to the first rotating member 210 in the direction along the axis C-C of the main body 20, that is, the damping member 290 is located at the first position, so that the first rotating member 210 can be tightened. When the first mating end 2012a abuts against the third mating end 2912, the switching member 201 may be located at the second angular position at this time, and the damping member 290 is farther away from the first rotating member 210 in the direction along the axis C-C of the main body 20, so that the first rotating member 210 can be disengaged and the rotational damping between the first rotating member 210 and the second rotating member 230 can be released, that is, the damping member 290 is located at the second position. When the first mating end 2012a abuts against the second mating end 2911, the switching member 201 is located at the first angular position and the damping member 290 is located at the first position; when the first mating end 2012a abuts against the third mating end 2912, the switching member 201 is located at the second angular position and the damping member 290 is located at the second position. Such end mating in place can give the operator a clearer prompt, and such an operating handle assembly 2 can also have a clearer prompt when switching between the locked and unlocked states of the position of the intervention head end 103. When the operator rotates the switching member 201 around the axis C-C of the main body 20, the operator can better grasp the locked or unlocked state of the operating handle assembly 2, and the use experience is better.

[0122] Exemplarily, the switching member 201 may include a plurality of first mating surfaces 2012. The plurality of first mating surfaces 2012 may be arranged around the main body 20. Specifically, the plurality of first mating surfaces 2012 may be arranged around the axis C-C of the main body 20. The damping member 290 may include a plurality of second mating surfaces 291 respectively corresponding to the plurality of first mating surfaces 2012. The plurality of first mating surfaces 2012 may respectively abut against the plurality of second mating surfaces 291. In this way, the abutting area between the switching member 201 and the damping member 290 is larger, and the overall stability is better. When the switching member 201 is in the first angular position and the damping member 290 is in the first position, the position locking of the operating handle assembly 2 to the intervening head end 103 is more stable; when the switching member 201 is in the second angular position and the damping member 290 is in the second position, the position unlocking of the operating handle assembly 2 to the intervening head end 103 is also more stable. Exemplarily, the plurality of first mating surfaces 2012 and the plurality of second mating surfaces 291 are evenly distributed. One first mating surface 2012 and one second mating surface 291 may form a group. The abutting positions of the first mating surface 2012 and the second mating surface 291 in each group are the same. The superposition of these abutting positions can achieve a larger abutting area and a larger damping force.

[0123] With reference to Figure 2 、 Figure 25 、 Figure 26 、 Figure 27 and Figure 28, the first rotating member 210 may include a first rotating sleeve 211 and a first connecting member 212. The first rotating sleeve 211 may be connected to the first connecting member 212, and the first connecting member 212 may be connected to the main body 20. The second rotating member 230 may include a second rotating sleeve 232 and a second connecting member 233. The second rotating sleeve 232 may be connected to the second connecting member 233, and the second connecting member 233 may be connected to the main body 20. A wire winding assembly 250 may also be provided on the main body 20. The wire winding assembly 250 is located between the first connecting member 212 and the second connecting member 233. Wherein, when the switching member 201 is located at the first angular position, the damping member 290 is located at the first position. At this time, the damping member 290 may abut against the first connecting member 212 so that a rotational damping may be formed among the first connecting member 212, the wire winding assembly 250, and the second connecting member 233. At least a part of each of the first control wire 131 and the second control wire 132 may be wound around the wire winding assembly 250. Taking the example that the damping member 290, the first connecting member 212, the wire winding assembly 250, and the second connecting member 233 are arranged in sequence, when the switching member 201 is located at the first angular position, the damping member 290 may be located at the first position. At this time, the damping member 290, the first connecting member 212, the wire winding assembly 250, and the second connecting member 233 may abut against each other in sequence, that is, the damping member 290, the first rotating member 210, the wire winding assembly 250, and the second rotating member 230 may abut against each other in sequence, so that a rotational damping may be formed between the first rotating member 210 and the second rotating member 230. The wire winding assembly 250 may change the extending directions of the first control wire 131 and the second control wire 132. The first control wire 131 and the second control wire 132 extending along the axis C-C of the main body 20 may enter the interior of the wire winding assembly 250 at the openings on the side wall of the wire winding assembly 250, and under the guidance of the steering column 251 inside the wire winding assembly 250, the first control wire 131 and the second control wire 132 that originally extended along the axis C-C of the main body 20 may be turned to extend along the direction where the axis C-C of the main body 20 is located, so as to extend axially along the intervention catheter assembly 1 to the intervention head end 103. The arrangement of the wire winding assembly 250 may facilitate the realization that the movement of the intervention head end 103 is driven by the rotation of the first rotating member 210 and the second rotating member 230 around the axis C-C of the main body 20. Moreover, the arrangement of the wire winding assembly 250 may prevent the first control wire 131 and the second control wire 132 inside the operation handle assembly 2 from being wound around each other after the first rotating member 210 and / or the second rotating member 230 rotates.

[0124] Refer to in combination Figure 2 , Figure 27 and Figure 28When the switching member 201 is in the first angular position, the first rotating member 210 and the winding assembly 250 can be abutted against each other through the friction plate 260. A friction plate 260 can be provided between the first rotating member 210 and the winding assembly 250. When the switching member 201 is in the first angular position and the damping member 290 is in the first position, the first rotating member 210 and the winding assembly 250 are pressed tightly. Actually, the first rotating member 210 is abutted against the winding assembly 250 through the friction plate 260. The setting of the friction plate 260 can increase the frictional force between the first rotating member 210 and the winding assembly 250, so that when the switching member 201 is in the first angular position and the damping member 290 is in the first position, the rotational damping between the first rotating member 210 and the second rotating member 230 can be greater. Thus, the position locking of the intervention head end 103 can be more stable when the external force is removed and it is automatically realized.

[0125] Refer to again in combination with Figure 2 、 Figure 27 and Figure 28 When the switching member 201 is in the first angular position, the winding assembly 250 and the second rotating member 230 can be abutted against each other through the friction plate 260. A friction plate 260 can be provided between the winding assembly 250 and the second rotating member 230. When the switching member 201 is in the first angular position and the damping member 290 is in the first position, the winding assembly 250 and the second rotating member 230 are pressed tightly. Actually, the winding assembly 250 is abutted against the second rotating member 230 through the friction plate 260. The setting of the friction plate 260 can increase the frictional force between the winding assembly 250 and the second rotating member 230, so that when the switching member 201 is in the first angular position and the damping member 290 is in the first position, the rotational damping between the winding assembly 250 and the second rotating member 230 can be greater. Thus, the position locking of the intervention head end 103 can be more stable when the external force is removed and it is automatically realized.

[0126] Exemplarily, the first rotating member 210 may have a first initial position corresponding to the initial state of the interventional catheter assembly 1. A second reset member 280 (not shown in the figure) may be provided on the main body 20. The second reset member 280 may be connected to the first rotating member 210 and may apply a force to the first rotating member 210 to keep the first rotating member 210 in the first initial position. The second reset member 280 may be a torsion spring or any other suitable form. Due to the provision of the second reset member 280, when the switching member 201 rotates about the axis C-C of the main body 20 from the first angular position to the second angular position, the damping member 290 moves from the first position to the second position along the direction of the axis C-C of the main body 20, and the rotational damping between the first rotating member 210 and the second rotating member 230 is released. Thus, the first rotating member 210 returns to the first initial position under the action of the second reset member 280. During this process, the interventional catheter assembly 1 can be driven by the first control wire 131 to return to the initial state more quickly. When such an operating handle assembly 2 is unlocked, not only does the elastic force generated by the deformation of the interventional catheter assembly 1 itself cause the interventional catheter assembly 1 to reset, but also under the action of the second reset member 280, the first rotating member 210 can also drive the interventional catheter assembly 1 to reset, so that the reset of the interventional catheter assembly 1 after the operating handle assembly 2 is unlocked can be faster.

[0127] Similarly, the second rotating member 230 may have a second initial position corresponding to the initial state of the interventional catheter assembly 1. A third reset member (not shown in the figure) may be provided on the main body 20. The third reset member may be connected to the second rotating member 230 and may apply a force to the second rotating member 230 to keep the second rotating member 230 in the second initial position. The third reset member may be a torsion spring or any other suitable form. Due to the provision of the third reset member, when the switching member 201 rotates about the axis C-C of the main body 20 from the first angular position to the second angular position, the damping member 290 moves from the first position to the second position along the direction of the axis C-C of the main body 20, and the rotational damping between the first rotating member 210 and the second rotating member 230 is released. Thus, the second rotating member 230 returns to the second initial position under the action of the third reset member. During this process, the interventional catheter assembly 1 can be driven by the second control wire 132 to return to the initial state more quickly. When such an operating handle assembly 2 is unlocked, not only does the elastic force generated by the deformation of the interventional catheter assembly 1 itself cause the interventional catheter assembly 1 to reset, but also under the action of the third reset member, the second rotating member 230 can also drive the interventional catheter assembly 1 to reset, so that the reset of the interventional catheter assembly 1 after the operating handle assembly 2 is unlocked can be faster.

[0128] Referring jointly to Figure 2 、 Figure 25 、 Figure 26 and Figure 27, the first rotating member 210 can be used to drive the intervention head end 103 to move in the first plane through the first control wire 131, and the second rotating member 230 can be used to drive the intervention head end 103 to move in the second plane through the second control wire 132. The elastic force generated by the deformation of the intervention catheter assembly 1 transmitted through the first control wire 131 to act on the first rotating member 210 can be less than the damping force acting on the first rotating member 210 by the rotational damping, and the elastic force generated by the deformation of the intervention catheter assembly 1 transmitted through the second control wire 132 to act on the second rotating member 230 can be less than the damping force acting on the second rotating member 230 by the rotational damping. This can ensure that when there is rotational damping between the first rotating member 210 and the second rotating member 230, the intervention catheter assembly 1 will not reset under the action of its own elastic force, thereby ensuring the stability of the operation handle assembly 2 when locking the position of the intervention head end 103.

[0129] Refer to in combination Figure 24 , Figure 26 , Figure 29 and Figure 30, a plurality of marking portions 2014 may be circumferentially provided on the switching member 201, and the plurality of marking portions 2014 can be used to prompt the operator of the angular position of the switching member 201. A prompting position (at the illustrated position P) may be provided on the main body 20, and the prompting position P may be a groove, a recessed point, a protrusion or various other forms. The plurality of marking portions 2014 can be respectively designed in various different forms. According to the relative positional relationship between the plurality of marking portions 2014 and the prompting position P, the angular position of the switching member 201 can be prompted to the operator, whereby the magnitude of the rotational damping between the first rotating member 210 and the second rotating member 230 can be judged. The plurality of marking portions 2014 may also have the same form. According to the number of the marking portions 2014 on both sides of the prompting position P, the angular position of the switching member 201 can also be realized to be prompted to the operator. Exemplarily, the marking portion 2014 may be a strip-shaped groove, or may be a recessed point, a protrusion or various other forms, and such a marking portion 2014 can have an anti-slip effect. The prompting position P on the main body 20 may be the position where the thumb is placed when the operator holds it. Of course, the prompting position P can also be set at any suitable position on the main body 20. The setting of the plurality of marking portions 2014 can prompt the operator of the angular position of the switching member 201, so as to facilitate the operator to judge the magnitude of the rotational damping between the first rotating member 210 and the second rotating member 230, and the plurality of marking portions 2014 can facilitate the operator to rotate the switching member 201, and thus such an operating handle assembly 2 is more convenient to use. It should be noted that there may be a gap between the plurality of marking portions 2014. When the operator rotates the switching member 201, the prompting position P may correspond to at least a part of the plurality of marking portions 2014 (for example, on the same axis), or may not correspond to any of the plurality of marking portions 2014, that is, the prompting position P corresponds to the gap between the marking portions 2014, and at this time, there may be a certain angular deviation from the marking portions 2014.

[0130] Refer to in combination Figure 2 , Figure 24 , Figure 26 , Figure 29 and Figure 30, the switching member 201 is rotatable about the axis C-C of the main body 20 within a first rotation interval between a first angular position and a second angular position and within a second rotation interval adjacent to the first rotation interval. Both the first rotation interval and the second rotation interval can be a rotation range of the switching member 201. The fact that the second rotation interval is adjacent to the first rotation interval means that the second rotation interval is located outside the first rotation interval. The second rotation interval can be adjacent to the first angular position. When the switching member 201 rotates from the second angular position to the first angular position, the switching member 201 actually rotates within the first rotation interval. At this time, the damping member 290 moves from the second position to the first position, and the surface of the damping member 290 facing the first connecting member 212 gradually presses against the first connecting member 212, and the first connecting member 212 gradually presses against the second connecting member 233, so that the resistance to relative rotation between the first rotating member 210 and the second rotating member 230 gradually increases. That is to say, within the first rotation interval, the rotation of the switching member 201 can cause the damping member 290 to gradually move from the second position to the first position, thereby adjusting the resistance to relative rotation between the first rotating member 210 and the second rotating member 230.

[0131] The multiple marking portions 2014 may include multiple different first marking portions 2014a and multiple identical second marking portions 2014b. When the switching member 201 rotates, the prompting position P on the main body 20 can be considered stationary. When the switching member 201 is within the first rotation range, at least a part of the multiple first marking portions 2014a can correspond to the prompting position P on the main body 20. Since the multiple first marking portions 2014a are different from each other, the angular position of the switching member 201 can be determined according to the form of the first marking portion 2014a corresponding to the prompting position P. For example, the first marking portions 2014a may have different lengths along the axial direction of the main body 20. The switching member 201 at different angular positions will cause different first marking portions 2014a to correspond to the prompting position P, so that a prompt of the angular position where the switching member 201 is located can be obtained. After the switching member 201 rotates to the first angular position, a rotational damping is formed between the first rotating member 210 and the second rotating member 230. The rotational damping is equivalent to a relatively large resistance to mutual rotation between the first rotating member 210 and the second rotating member 230. Subsequently, when the switching member 201 continues to rotate, the switching member 201 will rotate within the second rotation range. The first position of the damping member 290 can correspond to a position range. When the damping member 290 is within this position range, there is a sufficiently large rotational damping between the first rotating member 210 and the second rotating member 230. As long as the damping member 290 is within this position range, it can be considered that the damping member 290 is in the first position. When the switching member 201 is within the second rotation range, the damping member 290 can be within the position range corresponding to the first position. When the switching member 201 continues to rotate away from the first angular position within the second rotation range, the damping member 290 is within the position range corresponding to the first position. Driven by the switching member 201, the damping member 290 will continue to press against the first rotating member 210, so that the rotational damping between the first rotating member 210 and the second rotating member 230 is further increased. This can further prevent the creep and rebound of the interventional catheter assembly 1. When the switching member 201 is within the second rotation range, the second marking portions 2014b can correspond to the prompting position P on the main body 20. Since the damping member 290 is in the first position when the switching member 201 is within the second rotation range, and there is already sufficient rotational damping between the first rotating member 210 and the second rotating member 230 to lock the interventional tip 103. The multiple second marking portions 2014b can be the same as each other. The multiple identical second marking portions 2014b only need to prompt the operator of the range of the second rotation range of the switching member 201. When the switching member 201 is within the first rotation range, the surface of the switching member 201 that abuts against the damping member 290 can be helically or obliquely extended around the axis of the main body 20. When the switching member 201 is within the second rotation range, the surface of the switching member 201 that abuts against the damping member 290 can be perpendicular to the axis of the main body 20.The arrangement of multiple different first marking portions 2014a and multiple identical second marking portions 2014b can more clearly prompt the operator of the angular position of the switching member 201, so that the operator can be more convenient when using the operating handle assembly 2.

[0132] According to another aspect of the present invention, an ultrasonic imaging system is provided. Refer to Figure 1 , the ultrasonic imaging system includes an ultrasonic main unit 5, a female connector 4, and the ultrasonic imaging device as described above. The ultrasonic imaging device may further include a connector assembly 3. The connector assembly 3 can be connected to the second handle end 22 of the operating handle assembly 2 provided opposite to the first handle end 21, so that the interventional catheter assembly 1, the operating handle assembly 2, and the connector assembly 3 are arranged in sequence along the axis, and a docking head 330 may be formed at one end of the connector assembly 3 away from the operating handle assembly 2. The ultrasonic transducer 12 can be connected to the docking head 330 through a wire 124. The docking head 330 is docked with the female connector 4, and the female connector 4 is connected to the ultrasonic main unit 5 through a transmission cable 6. One end of the wire 124 is connected to the connection end 123, and the other end of the wire 124 is connected to the docking head 330, and then connected to the ultrasonic main unit 5 through the connector assembly 3 to realize signal communication between the ultrasonic transducer 12 and the ultrasonic main unit 5. The ultrasonic main unit 5 can accordingly control the ultrasonic transducer 12 to transmit and receive ultrasonic signals.

[0133] Specifically, refer to Figures 1 to 36 , during the use of the ultrasonic imaging system, the interventional catheter assembly 1 is inserted into the organ to be examined. The ultrasonic working end face 121 of the ultrasonic transducer 12 emits and receives ultrasonic signals, and the received signals are transmitted to the wire 124. Since the connector assembly 3 is docked with the female connector 4 through the docking head 330, the signals pass through the connector assembly 3 and the female connector 4 to the transmission cable 6, and finally transmitted to the ultrasonic main unit 5, and ultrasonic images are displayed on the display 50 of the ultrasonic main unit 5. By adjusting the operating handle assembly 2, the interventional head end 103 of the interventional catheter assembly 1 is bent, and the signals received by the ultrasonic working end face 121 change, so that the ultrasonic images displayed on the display 50 change.

[0134] Since the ultrasonic imaging device as described above has the above beneficial effects, the ultrasonic imaging system including the ultrasonic imaging device as described above also has the above beneficial effects, which will not be elaborated here one by one. The interventional catheter assembly 1, the operating handle assembly 2, and the connector assembly 3 of the ultrasonic imaging system of the present invention are connected in sequence, ensuring the controllability of the ultrasonic imaging device. And based on the setting of the docking head 330, the ultrasonic imaging device can be installed and disassembled as a disposable product through the connector assembly 3, meeting the aseptic condition use requirements of the surgical requirements for applying the ultrasonic imaging system.

[0135] Refer to in combination with Figures 32 to 36, the connector assembly 3 may include a male housing 31 and a wire connection tube 32. The wire connection tube 32 may be connected to the male housing 31 and may be sleeved outside the wire 124. The male housing 31 may have a male docking surface 310 and side surfaces. The docking head 330 protrudes outward from the male docking surface 310 in the docking direction, and a locking groove 321 may be provided on the side surface. The connector assembly 3 is used to dock with the female connector 4. When the connector assembly 3 docks with the female connector 4, the locking portion 482 of the female connector 4 may cooperate with the locking groove 321, and the position where the locking portion 482 and the locking groove 321 cooperate is the locking position. Such a connector assembly 3 has a simple structure, is easy to dock with the female connector 4, and after docking with the female connector 4, due to the cooperation of the locking portion 482 and the locking groove 321, the docking can be more stable.

[0136] Anti-slip lines 322 are also provided on the side surface. The male housing 31 may be in any form that is easy to hold, and the anti-slip lines 322 may be provided at appropriate positions on the side surface of the male housing 31. The provision of the anti-slip lines 322 can make the docking of the connector assembly 3 with the female connector 4 easier to operate.

[0137] Referring to Figure 36 、 Figure 37 and Figure 39A , the female connector 4 may include a female housing 40, a rigid locking member 480, and an operating portion 490. The female housing 40 may be formed with a receiving cavity 410 inside, and at least part of the rigid locking member 480 and the operating portion 490 may be received in the receiving cavity 410. The female housing 40 may be designed in any form as needed. Preferably, the female housing 40 may be in any form that is easy to hold. Preferably, the width of the female housing 40 may be matched with the size of the human hand to facilitate the human hand to hold. Referring to Figure 35 and Figure 40, a docking seat 450 for docking with the connector assembly 3 can be provided on the female connector 4, and a connection end seat 451 can be provided on the docking seat 450. When the female connector 4 is docked with the connector assembly 3, the user can hold the female housing 40 by hand to dock the female connector 4 with the connector assembly 3. The docking seat 450 can be asymmetrically arranged in the accommodation cavity 410. Exemplarily, the long axis of the docking seat 450 is parallel to and spaced from the axis of symmetry of the accommodation cavity 410. For example, the docking seat 450 is arranged at a position deviating from the axis of symmetry of the accommodation cavity 410 and close to the rigid locking member 480. Due to this asymmetric arrangement, when the direction of insertion is reversed, the connector assembly 3 and the female connector 4 cannot be smoothly docked, which can prompt the user to insert in the opposite direction, thus achieving an anti-misoperation effect and avoiding the inability to transmit signals caused by the reverse insertion direction when the connector assembly 3 is docked with the female connector 4. Among them, the docking seat 450 can be oblong, and the long axis of the docking seat 450 can be the connection line from the midpoint of one short side of the docking seat 450 to the midpoint of the other short side.

[0138] The rigid locking member 480 can have a locking body 481 located in the accommodation cavity 410 and a locking portion 482 extending outside the accommodation cavity 410. The rigid locking member 480 means that the rigid locking member 480 has a certain rigidity, and the rigid locking member 480 will not undergo obvious deformation under the action of conventional external forces. In this way, when any part of the rigid locking member 480 is affected by an external force and moves, other parts of the rigid locking member 480 will move accordingly. Since the locking portion 482 needs to cooperate with the outside for locking, a suitable opening 4412 can be provided on the female housing 40 to enable the locking portion 482 to extend outside the accommodation cavity 410.

[0139] The operating portion 490 can have a transmission end 491 located in the accommodation cavity 410 and abutting against the locking body 481 and an operating end 492 located outside the accommodation cavity 410. The transmission end 491 can have an end face that is easy to abut against and drive the locking body 481 to move. For example, the transmission end 491 can have an end face in the form of a plane, and the part of the locking body 481 that abuts against the transmission end 491 can also be a plane. The transmission end 491 should be able to stably abut against the locking body 481 and drive the locking body 481 to move. The specific forms of the transmission end 491 and the locking body 481 are not limited in this application. Similarly, a suitable opening 4412 can be provided on the female housing 40 to enable the operating end 492 to be located outside the accommodation cavity 410. At this time, the operating portion 490 can be passed through the opening 4412, and this will be described in detail below. The operating end 492 is located outside the accommodation cavity 410, and such an operating end 492 can facilitate operation. Preferably, the operating end 492 located outside the accommodation cavity 410 can have a suitable size.

[0140] Among them, when a force is applied to the operating end 492, the driving end 491 can drive the locking part 482 to move between the locking position and the unlocking position. The operating part 490 can also be of a certain rigidity. When an external force acts on the operating end 492, the external force can be transmitted on the operating part 490 to the driving end 491. Thus, the external force can drive the locking body 481 to move through the driving end 491 of the operating part 490. As described above, when the locking body 481 of the rigid locking member 480 moves, the locking part 482 will move accordingly, so that the locking part 482 can move between the locking position and the unlocking position. Here, the locking position refers to the position when the locking part 482 cooperates with the outside to form a lock, and the unlocking position refers to the position when the cooperation between the locking part 482 and the outside is released and no lock can be formed.

[0141] For example, the operating part 490 can be columnar, and the driving end 491 can abut against the middle area of the locking body 481. When an external force acts on the operating end 492 to make the operating part 490 move downward, the driving end 491 will also move downward. At this time, the driving end 491 drives the locking body 481 to move downward, and the locking part 482 will move correspondingly with the locking body 481, that is, the locking part 482 will also move downward; when an external force acts on the operating end 492 to make the operating part 490 move upward, the driving end 491 will also move upward. At this time, the driving end 491 drives the locking body 481 to move upward, and the locking part 482 will move correspondingly with the locking body 481, that is, the locking part 482 will also move upward. On this basis, a groove 4412 with an opening downward can be provided on the connector assembly 3. The locking part 482 can be in the form of a lock catch. When the connector assembly 3 is docked with the female connector 4, the locking part 482 can be located in the groove. At this time, the locking part 482 is in the locking position, and the docking of the connector assembly 3 and the female connector 4 is locked. Thus, the docking of the connector assembly 3 and the female connector 4 has better stability; then, when a downward external force is applied to the operating part 490, the driving end 491 will drive the locking part 482 to move downward, and the locking part 482 leaves the groove, that is, the locking part 482 leaves the locking position, and the docking of the connector assembly 3 and the female connector 4 is unlocked; when the connector assembly 3 and the female connector 4 need to be docked again, the locking part 482 can be first placed in the unlocking position, and then an upward external force is applied to the operating end 492 of the operating part 490. The driving end 491 will drive the locking part 482 to move upward, and the locking part 482 can be inserted into the groove described above. At this time, the docking between the connector assembly 3 and the female connector 4 can be locked. Of course, it can be understood that the groove provided on the connector assembly 3 mentioned here, when the locking part 482 is located in the groove, it is in the locking position, and when it is outside the groove, it is in the unlocking position. This is only an example, and the locking position and the unlocking position of the locking part 482 can also be in various other forms, which will not be elaborated here.

[0142] With such a setting, by applying a force to the operating end 492, the locking part 482 can be driven to move between the locking position and the unlocking position. When the locking part 482 is in the locking position, the docking of the female connector 4 and the connector assembly 3 can be locked, so that the docking of the female connector 4 and the connector assembly 3 is more stable and not easily detached. Moreover, the rigid locking member 480 has a certain rigidity, which is different from using structural elasticity for locking. Even if the female connector 4 and the connector assembly 3 are inserted and removed multiple times, when the locking part 482 is in the locking position, the locking effect on the docking of the female connector 4 and the connector assembly 3 is still very good. In addition, for such a female connector 4, only by applying a force to the operating end 492 can the locking part 482 be moved between the locking position and the unlocking position. Such an operation method is very simple. When such a female connector 4 is docked with the connector assembly 3, the switching between the locked state and the unlocked state of the docking is simpler.

[0143] With reference to Figure 35 , Figure 37 and Figure 39A , a positioning pin 420 can be provided on the female housing 40. The positioning pin 420 can pass through the locking body 481, and the locking body 481 can rotate around the positioning pin 420. The part where the transmission end 491 abuts against the locking body 481 can be eccentrically arranged with respect to the positioning pin 420. When a force is applied to the operating end 492, the transmission end 491 will drive the locking body 481 to rotate around the positioning pin 420, and the locking part 482 will rotate around the positioning pin 420 accordingly. At this time, the locking position and the unlocking position can be two angular positions of the locking part 482 relative to the positioning pin 420. The setting of the positioning pin 420 can enable the locking part 482 to move between the locking position and the unlocking position by rotating relative to the positioning pin 420, which can save space and make the overall structure more compact. Such a female connector 4 is more suitable for application in an ultrasonic catheter device.

[0144] The locking body 481 may include an abutting portion 4811, the transmission end 491 may abut against the abutting portion 4811, and the abutting portion 4811 may be the portion where the transmission end 491 abuts against the locking body 481. The abutting portion 4811 may be eccentric with respect to the positioning pin 420. When both the abutting portion 4811 and the locking portion 482 are located on the same side of the positioning pin 420 on the rigid locking member 480, a force is applied to the operating end 492, and the transmission end 491 will drive the abutting portion 4811 to rotate around the positioning pin 420. Since both the abutting portion 4811 and the locking portion 482 are located on the same side of the positioning pin 420, the locking portion 482 will correspondingly rotate around the positioning pin 420 in the same direction as the abutting portion 4811. For example, both the locking portion 482 and the abutting portion 4811 rotate clockwise around the positioning pin 420 or both rotate counterclockwise around the positioning pin 420; on the rigid locking member 480, the abutting portion 4811 and the locking portion 482 may be respectively located on both sides of the positioning pin 420. When a force is applied to the operating end 492, the transmission end 491 will drive the abutting portion 4811 to rotate around the positioning pin 420. Since the abutting portion 4811 and the locking portion 482 are respectively located on both sides of the positioning pin 420, the locking portion 482 will correspondingly rotate around the positioning pin 420 in the opposite direction to the abutting portion 4811. For example, the abutting portion 4811 rotates clockwise around the positioning pin 420 while the locking portion 482 rotates counterclockwise around the positioning pin 420, or the abutting portion 4811 rotates counterclockwise around the positioning pin 420 while the locking portion 482 rotates clockwise around the positioning pin 420. Preferably, the abutting portion 4811 and the locking portion 482 may be respectively located on both sides of the positioning pin 420, which can further save space, make the structure of the female connector 4 more compact, and be more suitable in terms of size when applied to an ultrasonic catheter device.

[0145] A torsion member 421 may be provided on the positioning pin 420. The torsion member 421 may be a torsion spring or various other forms of torsion members 421. The torsion member 421 may be connected to the rigid locking member 480 and may apply a force to the rigid locking member 480 to keep the locking portion 482 in the locked position. When a force is applied to the operating end 492 such that the locking portion 482 rotates about the positioning pin 420 and moves away from the locked position, the docking of the female connector 4 and the connector assembly 3 is unlocked. At this time, the connector assembly 3 can be repaired, cleaned, or replaced. After the docking of the female connector 4 and the connector assembly 3 is released, the locking portion 482 will return to the locked position under the action of the torsion member 421. At this time, since the female connector 4 is not docked with the connector assembly 3, the female connector 4 is actually in an idle state. When the female connector 4 and the connector assembly 3 need to be docked again, a force can be applied to the operating end 492 such that the locking portion 482 rotates about the positioning pin 420 and moves away from the locked position. At this time, the female connector 4 can be docked with the connector assembly 3. After the docking is completed, the applied force can be removed, and the locking portion 482 will reach the locked position under the action of the torsion member 421, completing the locking of the docking of the female connector 4 and the connector assembly 3. In fact, it can be considered that the torsion member 421 has a reset function for the locking portion 482 located in the locked position. The setting of the torsion member 421 can make the locking portion 482 located in the locked position more stable, and thus make the docking of such a female connector 4 with the connector assembly 3 more stable after docking; moreover, with the torsion member 421 provided, only a force needs to be applied to the operating end 492 when the locking portion 482 moves away from the locked position, and the operation of such a female connector 4 is simpler.

[0146] See Figure 37 and Figure 38 The female housing 40 may include an upper housing 430 and a lower housing (the lower housing is not marked in the figure). The docking seat 450 may be provided on the lower housing. The upper housing 430 and the lower housing may be connected together in various forms such as snap connection or threaded connection. A positioning seat 440 may be provided on the upper housing 430, and the positioning pin 420 may be provided on the positioning seat 440. The positioning seat 440 may serve as a bracket for the positioning pin 420 and may be designed in any form as needed. The positioning seat 440 can provide more stable support for the positioning pin 420. The setting of the positioning seat 440 can make the position of the positioning pin 420 more stable, and thus can improve the stability of the overall device.

[0147] An opening 4412 may be provided on the positioning seat 440. The opening 4412 may extend into the positioning seat 440 to form a positioning groove 441. The positioning pin 420 may be inserted into the positioning groove 441 and be slidable within the positioning groove 441. The positioning groove 441 can communicate with the outside of the positioning seat 440 through the opening 4412. In this way, when the positioning pin 420 is installed on the positioning seat 440, it can enter the positioning groove 441 through the opening 4412, making the installation of the positioning pin 420 simpler and more convenient, and the structure of the overall device simpler.

[0148] Preferably, a positioning portion 4411 may be provided at one end of the positioning groove 441 away from the opening 4412. The positioning portion 4411 may be an arc segment formed by the end of the positioning groove 441 away from the opening 4412 extending obliquely downward towards the lower housing. After the positioning pin 420 enters the positioning groove 441 through the opening 4412 and slides within the positioning groove 441 to the positioning portion 4411, it will remain at the positioning portion 4411 under the action of its own gravity. The setting of the positioning portion 4411 can make the positioning pin 420 more stable within the positioning groove 441, thereby improving the stability of the overall device, and it is also simpler and more convenient to install the positioning pin 420 into such a positioning groove 441.

[0149] For specific reference Figure 38 As shown, the female housing 40 may include an upper housing 430. A communication port 431 may be provided on the upper housing 430. The operating portion 490 may pass through the upper housing 430 through the communication port 431. The operating portion 490 may be inserted through the communication port 431, and the communication port 431 may be designed in any form as needed. The operating portion 490 can move up and down relative to the communication port 431 after passing through the communication port 431. Preferably, the size of the opening 4412 of the communication port 431 may match the size of the operating portion 490, which can prevent the interior of the accommodation cavity 410 from being polluted by the external environment. The operating portion 490 passes through the upper housing 430 through the communication port 431, making the structure of the overall device simpler and easier to implement.

[0150] For specific reference Figure 38, the outer side surface of the upper housing 430 can be recessed toward the accommodating cavity 410 to form a placement cavity 432. The operating end 492 can be connected with a button 4921, and at least a part of the button 4921 can be located in the placement cavity 432. A force can be applied to the button 4921, so that the force can be applied to the operating end 492. The setting of the button 4921 can make it simpler and more convenient to apply a force to the operating end 492. When a force is applied to the button 4921, the button 4921 will move, but no matter how the button 4921 moves, at least a part of the button 4921 can be located in the placement cavity 432. For example, when the button 4921 is at the uppermost position relative to the upper housing 430, the lower edge of the button 4921 is still located in the placement cavity 432. In this way, the button 4921 of the female connector 4 is not likely to hook external objects. For example, when such a female connector 4 is stored in a sterile bag, such a button 4921 will not hook the sterile bag, and the female connector 4 is easier to be put into the sterile bag.

[0151] See Figure 39B , a limiting part 493 can be arranged on the operating part 490, and the edge of the communication port 431 can form a limit on the limiting part 493, so that the limiting part 493 can be kept in the accommodating cavity 410. The limiting part 493 can be in the form of a square plate, a circular plate or other various forms, and the limiting part 493 cannot pass through the communication port 431. The setting of the limiting part 493 can make the operating part 490 not easy to fall off from the accommodating cavity 410. Exemplarily, on the inner side wall of the upper housing 430, an inner placement cavity 432 can be formed by recessing toward the outer side wall. When the operating part 490 is at the uppermost position relative to the upper housing 430, the limiting part 493 can be located in the inner placement cavity 432, which can save the space in the accommodating cavity 410 and make the structure of the whole device more compact.

[0152] Refer to Figure 32 , Figure 36 and Figure 40 , a docking seat 450 can be arranged in the accommodating cavity 410. A connection end seat 451 can be arranged on the docking seat 450. A connection port 460 can be provided on the female housing 40, and the connection end seat 451 can communicate with the outside through the connection port 460. Due to the provision of the connection port 460, the docking seat 450 can be located in the accommodating cavity 410, and the connection port 460 can have a form matching the size of the connection end seat 451. Thus, the docking seat 450 located in the accommodating cavity 410 can avoid being polluted by the external environment. When the connector assembly 3 is docked with the female connector 4, the connection terminal 331 can be inserted into the connection end seat 451.

[0153] Among them, when the locking portion 482 moves into the locking groove 321, it can be in the locked position. When the locking portion 482 moves out of the locking groove 321, it can be in the unlocked position. When the locking portion 482 is in the locked position, the connector assembly 3 and the female connector 4 are docked in the docking direction, and the connection terminal 331 can be connected to the connection socket 451. When using such a connector assembly 3, when the female connector 4 needs to be docked with the connector assembly 3, a force can be applied to the operating end 492, and the transmission end 491 will drive the locking portion 482 to move. At this time, the connector assembly 3 and the female connector 4 can be docked. The specific operation is to keep the locking portion 482 in the unlocked position, and at the same time make the male docking surface 310 of the connector assembly 3 approach the female connector 4 in the docking direction, so that the connection terminal 331 is connected to the connection socket 451. Then, the force applied to the operating end 492 is removed, and the locking portion 482 will reach the locked position under the action of the torsion member 421; or a force opposite to the previous one can be applied to the operating end 492, so that the locking portion 482 can reach the locked position. The locking portion 482 that reaches the locked position will cooperate with the locking groove 321. For example, for the locking portion 482 in the form of a latch, the locking portion 482 will be snapped into the locking groove 321 to lock the docking of the connector assembly 3 and the female connector 4, making the docking of the connector assembly 3 and the female connector 4 more stable. For such a connector assembly 3, the docking of the connector assembly 3 and the female connector 4 can be more stable. Moreover, since the rigid locking member 480 has a certain rigidity, the movement of the locking portion 482 between the locked position and the unlocked position is achieved by the action of force, rather than relying on the elasticity of the material or structure itself. In this way, even after multiple insertions and extractions between the connector assembly 3 and the female connector 4, and at the same time the locking portion 482 switches between the locked position and the unlocked position multiple times, it will not affect the locking effect of the docking between the connector assembly 3 and the female connector 4 when the locking portion 482 and the locking groove 321 cooperate. It should be noted that the locking portion 482 cooperates with the locking groove 321 in the form of a latch. When the locking portion 482 in the form of a latch moves into the locking groove 321, it is in the locked position. Such a locking portion 482 and locking groove 321 are only examples. In other embodiments not shown, the locking portion 482 and the locking groove 321 can also be in various other forms.

[0154] Specifically, the connection terminal 331 can be a gold finger. One end of the gold finger away from the male docking surface 310 can have a notch, and there can be a spacing between the notch and the symmetry axis of the gold finger. A positioning insert can be provided in the connection socket 451. When the connection terminal 331 is connected to the connection socket 451, the positioning insert can be inserted into the notch. The notch can be a long-strip notch, a triangular notch, or a notch in any form. The meaning of having a spacing between the notch and the symmetry axis of the gold finger is that when the gold finger is rotated 180°, the notch will be located on the left or right side of the gold finger respectively. The setting of the notch can make the gold finger have an asymmetric structure. The positioning insert can correspond to the notch. When the connection terminal 331 is connected to the connection socket 451, the positioning insert can be inserted into the notch. However, if the connector assembly 3 is inserted in the wrong direction when docking with the female connector 4, the positioning insert will not be able to be inserted into the notch. Such a connector assembly 3 has a foolproof design, which can prevent the connector assembly 3 from being inserted in the wrong direction when docking with the female connector 4 and resulting in the inability to achieve signal transmission.

[0155] See Figure 32 , a guiding portion 311 can protrude along the docking direction on the male docking surface 310. The guiding portion 311 can have a docking guiding surface 3111 and a side guiding surface 3112. The docking guiding surface 3111 can protrude and extend outward in the docking direction to form a docking head 330. The locking groove 321 can be provided on the side guiding surface 3112. The guiding portion 311 can guide the docking direction, making the docking of such a connector assembly 3 with the female connector 4 simpler and more convenient. Moreover, the guiding portion 311 can be designed into an asymmetric structure. Exemplarily, the long axis of the docking head 330 is parallel to the symmetry axis of the guiding portion 311 and has a spacing. Specifically, the docking head 330 is not provided on the symmetry axis of the guiding portion 311, but is provided at a position deviating from the symmetry axis and close to the locking groove 321. Further, the guiding portion 311 is composed of two parts, one side close to the locking groove 321 and the other side away from the locking groove 321. The docking head 330 is provided at the fitting position of these two parts. The height of the side close to the locking groove 321 is less than the height of the side away from the locking groove 321. When inserted in the wrong direction, the connector assembly 3 and the female connector 4 cannot be smoothly docked, which can prompt the user to insert in the reverse direction, thus achieving a foolproof effect and preventing the connector assembly 3 from being inserted in the wrong direction when docking with the female connector 4 and resulting in the inability to achieve signal transmission. Among them, the docking head 330 can be flat and long, and the long axis of the docking head 330 can be the connection line from the midpoint of one short side of the docking head 330 to the midpoint of the other short side.

[0156] Refer to Figure 32 and Figure 36, the female housing 40 may have a female docking surface 470. The female docking surface 470 may be recessed along the docking direction toward the accommodation cavity 410 to form a guiding groove 471. The connection port 460 may be formed at the bottom of the guiding groove 471. When the connector assembly 3 is docked with the female connector 4, the connection terminal 331 may pass through the connection port 460 to be connected to the connection socket 451, and the female docking surface 470 may be in contact with the male docking surface 310. In this way, after the connection terminal 331 is inserted into the connection port 460, the whole will be protected by the guiding groove 471 to avoid external contamination and damage. For the male docking surface 310, a guiding portion 311 may be formed thereon. The guiding portion 311 may have a form matching that of the guiding groove 471. When the connector assembly 3 is docked with the female connector 4, the connection terminal 331 is inserted into the connection socket 451, and the guiding portion 311 may also be inserted into the guiding groove 471. Preferably, when the connector assembly 3 is docked with the female connector 4, the female docking surface 470 may be in contact with the male docking surface 310, and the docking guiding surface 3111 may be in contact with the bottom of the guiding groove 471. In this way, the stability during the docking of the connector assembly 3 and the female connector 4 is better.

[0157] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front", "rear", "upper", "lower", "left", "right", "lateral", "vertical", "perpendicular", "horizontal" and "top", "bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the protection scope of the present invention; the orientation words "inner" and "outer" refer to the inside and outside relative to the contour of each component itself.

[0158] For the convenience of description, regional relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the drawings and other components or features. It should be understood that the regional relative terms not only include the orientation of the components described in the drawings, but also different orientations during use or operation. For example, if the components in the drawings are inverted as a whole, the components "above other components or features" or "over other components or features" will include the situation where the components are "below other components or structures" or "under other components or structures". Thus, the exemplary term "above..." may include two orientations of "above..." and "below...". In addition, these components or features may also be positioned at other different angles (such as rotated 90 degrees or other angles), and this article is intended to cover all such situations.

[0159] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, components, assemblies, and / or combinations thereof.

[0160] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0161] The present utility model has been illustrated by the above embodiments. However, it should be understood that the above embodiments are only for the purpose of exemplification and illustration, and are not intended to limit the present utility model within the scope of the described embodiments. In addition, those skilled in the art can understand that the present utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present utility model, and these variations and modifications all fall within the scope of protection required by the present utility model. The scope of protection of the present utility model is defined by the appended claims and their equivalent scope.

Claims

1. An ultrasonic imaging device, characterized in that, It comprises an interventional catheter assembly and an operating handle assembly, wherein the operating handle assembly has a first handle end, and the interventional catheter assembly is connected to the first handle end; Wherein, the operating handle assembly comprises a main body and a switching member, the main body has an initial damping, and the main body can be switched between a first state and a second state through the switching member, the initial damping constrains the interventional catheter assembly when the main body is in the first state so that the interventional catheter assembly is deformed from a natural shape to a specified shape, and the initial damping releases the constraint on the interventional catheter assembly when the main body is in the second state, and the interventional catheter assembly returns to the natural shape from the specified shape.

2. The ultrasonic imaging device according to claim 1, wherein The interventional catheter assembly comprises a tube body, an ultrasonic transducer and a traction member, wherein the tube body comprises a supporting tube section, a curved tube section and an interventional head end which are sequentially connected along an axis, and the ultrasonic transducer is arranged in the interventional head end; The traction member passes through the supporting pipe section to connect to the main body, and passes through the curved pipe section to connect to the connection between the curved pipe section and the intervention head end; The switching member is movable or rotatable relative to the main body, and the initial damping enables the traction member to pull the supporting pipe segment and the bending pipe segment to deform from the natural form to the specified form when the main body is in the first state. The initial damping releases the constraint on the traction member when the main body is in the second state, and the traction member pulls the supporting pipe segment and the bending pipe segment to return from the specified form to the natural form.

3. The ultrasonic imaging device according to claim 2, characterized in that, The supporting pipe section is connected to the bending pipe section to form a flexible hose, which includes a metal pipe body and an inner pipe body. The metal pipe body is sleeved outside the inner pipe body, and the outer wall surface of the metal pipe body has a spiral cutting groove. From the first end to the second end of the metal pipe body, the pitch of at least one section of the spiral cutting groove is gradually changing, and / or the groove width of at least one section of the spiral cutting groove is gradually changing, and the traction member is passed through the inner pipe body.

4. The ultrasonic imaging device according to claim 3, wherein, The inner tube body includes a first lumen and multiple second lumens. The outer periphery of the first lumen is recessed toward the center of the inner tube body to form multiple recessed portions. The multiple second lumens correspond to the multiple recessed portions one by one and are located in the corresponding recessed portions. The traction member is passed through the second lumen.

5. The ultrasonic imaging device according to claim 3, characterized in that, The flexible hose further comprises an outer tube body and a braided layer, and the inner tube body, the metal tube body, the braided layer and the outer tube body are sequentially connected from inside to outside.

6. The ultrasonic imaging device according to claim 5, wherein, The outer tube body has a third end corresponding to the first end and a fourth end corresponding to the second end, and the stiffness of the outer tube body changes gradually from the third end to the fourth end.

7. The ultrasonic imaging device according to claim 2, wherein The main body is provided with a matching piece, a second rotating piece and an elastic piece, and the switching piece, the matching piece and the second rotating piece are all rotatable around the axis of the main body. Wherein, the switching member is movable between a first position and a second position in a direction along the axis of the main body; the elastic member abuts against the switching member and applies a force to the switching member to keep the switching member in the first position; when the switching member is in the first position, the engaging member is connected to the switching member and can rotate synchronously with the switching member, and a rotational damping is formed between the engaging member and the second rotating member, and when the switching member is in the second position, the switching member disengages from the engaging member.

8. The ultrasonic imaging device according to claim 7, characterized in that, A limiting groove with an opening facing the engaging member is provided on the switching member, and a limiting block protruding towards the switching member is provided on the engaging member. When the switching member is in the first position, the limiting block is snapped into the limiting groove.

9. The ultrasonic imaging device according to claim 2, wherein A damping member, a first rotating member and a second rotating member are provided on the main body. The first rotating member and the second rotating member are both rotatable around the axis of the main body. The switching member is rotatable between a first angular position and a second angular position around the axis of the main body. The damping member is movable between a first position and a second position in a direction along the axis of the main body. The switching member abuts against the damping member. Wherein, when the switching member is in the first angular position, the damping member is in the first position and abuts against the first rotating member so that a rotational damping is formed between the first rotating member and the second rotating member. When the switching member is in the second angular position, the damping member is in the second position and the rotational damping is released.

10. The ultrasonic imaging device according to claim 9, wherein, The switching member includes a first mating surface that spirally or obliquely extends around the axis of the main body, and the damping member includes a second mating surface that spirally or obliquely extends around the axis of the main body. The first mating surface abuts against the second mating surface.

11. The ultrasonic imaging device according to claim 10, characterized in that, In a direction along the axis of the main body, the first mating surface has a first mating end close to the first rotating member. In a direction along the axis of the main body, the second mating surface has a second mating end far from the first rotating member and a third mating end close to the first rotating member. Wherein, when the switching member is in the first angular position, the first mating end abuts against the second mating end so that the damping member is in the first position. When the switching member is in the second angular position, the first mating end abuts against the third mating end so that the damping member is in the second position.

12. An ultrasonic imaging system, characterized in that, An ultrasound main machine, a female connector and an ultrasound imaging device according to any one of claims 1-11 are included. The ultrasound imaging device further includes a connector assembly. The connector assembly is connected to a second handle end provided opposite to the first handle end of the operation handle assembly so that the interventional catheter assembly, the operation handle assembly and the connector assembly are arranged in sequence along the axis, and a docking head is formed at one end of the connector assembly away from the operation handle assembly. The docking head is docked with the female connector, and the female connector is connected to the ultrasound main machine through a transmission cable.

13. The ultrasonic imaging system according to claim 12, wherein The connector assembly includes a male housing having a male docking surface and side surfaces. The docking head is formed to protrude outward from the male docking surface in the docking direction, and locking grooves are provided on the side surfaces.

Images