Ultrasound imaging apparatus and ultrasound imaging system

Abstract

The invention 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 the 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 operations are simpler, and the use experience is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to an ultrasound imaging device and an ultrasound imaging system. Background Technology

[0002] Intracardiac ultrasound is a new echocardiographic diagnostic technique combined with cardiac catheterization. It involves placing an interventional catheter assembly within the heart chambers to precisely visualize the anatomical and physiological structures within the heart and major blood vessels. However, existing ultrasound imaging devices lack initial damping in the operating handle assembly, requiring multiple operations to lock the interventional catheter assembly to the designated working state. Furthermore, once locked, the catheter assembly cannot be quickly unlocked and reset. Therefore, there is an urgent need for an ultrasound imaging device that offers more convenient locking and unlocking. Summary of the Invention

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

[0004] The ultrasound 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. The operating handle assembly has a main body and a switching element. The main body has initial damping, and the main body can be switched between a first state and a second state through the switching element. When the main body is in the first state, the initial damping constrains the interventional catheter assembly, causing the interventional catheter assembly to deform from its natural shape to a specified shape. When the main body is in the second state, the initial damping releases the constraint on the interventional catheter assembly, and the interventional catheter assembly returns to its natural shape from the specified shape.

[0005] The ultrasound imaging device of the present invention can lock the interventional catheter assembly to a specified shape through the initial damping of the main body, and can be unlocked with one click through the switching component. This not only ensures operability, but also makes the locking and unlocking operations simpler and improves the user experience.

[0006] According to another aspect of the present invention, an ultrasound imaging system is provided, the ultrasound system including an ultrasound host, a female connector and an ultrasound imaging device as described above, the ultrasound imaging device further including a connector assembly connected to a second handle end of an operating handle assembly disposed opposite to a first handle end, such that the interventional catheter assembly, the operating handle assembly and the connector assembly are arranged sequentially along an axis, and a mating joint is formed at the end of the connector assembly away from the operating handle assembly, the mating joint being mated with the female connector, the female connector being connected to the ultrasound host via a transmission cable.

[0007] Since the ultrasound imaging device described above has the aforementioned beneficial effects, the ultrasound imaging system including the ultrasound imaging device described above also has the aforementioned beneficial effects, which will not be elaborated further here. In the ultrasound imaging system of the present invention, the interventional catheter assembly, the operating handle assembly, and the connector assembly are connected sequentially, ensuring the operability of the ultrasound imaging device. Furthermore, based on the connector configuration, the ultrasound imaging device can be installed and disassembled as a disposable product via the connector assembly, meeting the aseptic conditions required for surgical procedures using the ultrasound imaging system.

[0008] A series of simplified concepts are introduced in the description of the invention, which will be further explained in detail in the detailed description section. This description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0009] The advantages and features of the present invention will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0010] The following figures are included as part of this invention for understanding its principles. The figures illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the figures,

[0011] Figure 1 A schematic diagram of an ultrasound imaging system as an exemplary embodiment of the present invention;

[0012] Figure 2 for Figure 1 A schematic diagram of the structure of an interventional catheter assembly in an exemplary embodiment;

[0013] Figure 3 for Figure 1 A cross-sectional schematic diagram of an interventional catheter assembly in an exemplary embodiment;

[0014] Figure 4 for Figure 1 A partial cross-sectional schematic diagram of an interventional catheter assembly in an exemplary embodiment;

[0015] Figure 5 for Figure 1 A schematic longitudinal section of the interventional tip of an interventional catheter assembly in an exemplary embodiment;

[0016] Figure 6 for Figure 1 A partial structural schematic diagram of an interventional catheter assembly according to an exemplary embodiment;

[0017] Figure 7 for Figure 2A cross-sectional view of an exemplary embodiment of the flexible tubing of the interventional catheter assembly shown;

[0018] Figure 8 for Figure 2 A cross-sectional view of another exemplary embodiment of the flexible tubing of the interventional catheter assembly shown;

[0019] Figure 9 for Figure 2 A cross-sectional view of yet another exemplary embodiment of the flexible tubing of the interventional catheter assembly shown;

[0020] Figure 10 for Figure 2 A cross-sectional view of yet another exemplary embodiment of the flexible tubing of the interventional catheter assembly shown;

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

[0022] Figure 12 for Figure 11 Enlarged view of part A in the image;

[0023] Figure 13 for Figure 1 Reference for the usage status of the interventional catheter assembly shown Figure 1 ;

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

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

[0026] Figure 16 for Figure 6 A schematic diagram of a metal tube in another exemplary embodiment is shown;

[0027] Figure 17 for Figure 6 A schematic diagram of a metal tube body, as shown in yet another exemplary embodiment;

[0028] Figure 18 for Figure 1 A perspective view of an exemplary embodiment of the operating handle assembly is shown;

[0029] Figure 19 for Figure 18 An exploded view of the control handle assembly shown;

[0030] Figure 20 for Figure 18A cross-sectional view of the operating handle assembly shown;

[0031] Figure 21 for Figure 18 A partial cross-sectional view of the operating handle assembly shown, wherein the first rotating member and the second rotating member are separated;

[0032] Figure 22 for Figure 18 A partial cross-sectional view of the first rotating component shown;

[0033] Figure 23 for Figure 18 A partial sectional view of the second rotating component shown;

[0034] Figure 24 for Figure 1 A perspective view of the operating handle assembly of another exemplary embodiment shown;

[0035] Figure 25 for Figure 24 A cross-sectional view of the operating handle assembly shown;

[0036] Figure 26 for Figure 24 An exploded view of the control handle assembly shown;

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

[0038] Figure 28 for Figure 24 The partial explosion of the control handle assembly shown Figure 1 ;

[0039] Figure 29 for Figure 24 The partial explosion of the control handle assembly shown Figure 2 ;

[0040] Figure 30 for Figure 29 A partial exploded view of the control handle assembly from another perspective;

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

[0042] Figure 32 for Figure 1 A perspective view of a connector assembly according to an exemplary embodiment;

[0043] Figure 33 for Figure 32 A partial perspective view of the connector assembly shown;

[0044] Figure 34 for Figure 33 A perspective view of a mating connector of an exemplary embodiment;

[0045] Figure 35 for Figure 1 The diagram shows the connection between the connector assembly and the female connector.

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

[0047] Figure 37 for Figure 35 A perspective view of the upper housing of an exemplary embodiment, wherein a rigid locking member is shown;

[0048] Figure 38 for Figure 37 The sectional view of the upper shell shown;

[0049] Figure 39A for Figure 37 A perspective view of a rigid locking member according to an exemplary embodiment;

[0050] Figure 39B for Figure 39A A schematic diagram of an operating element in an exemplary embodiment;

[0051] Figure 40 for Figure 36 A perspective view of a docking seat according to an exemplary embodiment.

[0052] The above figures include the following reference numerals:

[0053] 1. Interventional catheter assembly; 11. Tube body; 12. Ultrasonic transducer; 13. Traction element; 100. Flexible tubing; 101. Supporting tube section; 102. Bending tube section; 103. Interventional tip; 104. Rigid transition section; 1041. Fourth connecting end; 1042. Fifth connecting end; 110. Tip tube; 111. Acoustic tube body; 1111. Inner wall surface; 112. Imaging tube body; 121. Ultrasonic working end face; 122. Outer surface; 123. Connecting end; 124. Lead wire; 131. First control wire; 132. Second control wire; 141. Accommodation space; 142. Acoustic medium layer; 150. Inner tube body; 151. First through hole; 1511. First cavity; 152. Second through hole; 521. Second cavity; 153. First cavity tube; 154. Second cavity tube; 155. Recessed portion; 160. Adhesive layer; 170. Outer 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 connecting end; 1830. Transition section; 1831. First connecting end; 1832. Second connecting end; 190. Braided layer; 2. Operating handle assembly; 20. Main body; 21. First handle end; 22. Second handle end; 23. Grip; 24. Shaft; 25. End cap; 201. Switching component; 2011. First toothed protrusion; 2012. First mating surface; 2012a. 1. Mating end; 2013. Winding component; 2014. Marking part; 2014a. First marking part; 2014b. Second marking part; 210. First rotating component; 211. First rotating sleeve; 212. First connecting component; 220. Mating component; 221. Second toothed protrusion; 222. First winding part; 230. Second rotating component; 231. Second winding part; 232. Second rotating sleeve; 233. Second connecting component; 240. Elastic component; 250. Winding assembly; 251. Steering column; 260. Friction plate; 270. First reset component; 280. Second reset component; 290. Damping component; 291. Second mating surface; 2911. Second mating end; 2912. Third mating end; 3. Connector assembly; 31 32. Male housing; 310. Wire connecting tube; 311. Male mating surface; 311. Guide part; 3111. Mating guide surface; 3112. Side guide surface; 321. Locking groove; 322. Anti-slip texture; 330. Connecting joint; 331. Connecting terminal; 4. Female connector; 40. Female housing; 410. Receiving cavity; 420. Positioning pin; 421. Torque component; 430. Upper housing; 431. Communication port; 432. Resettling cavity; 440. Positioning seat; 441. Positioning groove; 4411. Positioning part; 4412. Opening; 450. Mating seat; 451. Connecting end seat; 460. Connecting port; 470. Female mating surface; 471. Guide groove; 480. Locking component; 481. Locking body; 4811. Abutment part;482. Locking part; 490. Operating part; 491. Transmission end; 492. Operating end; 4921. Button; 493. Limiting part; 5. Ultrasonic main unit; 50. Display; 6. Transmission cable. Detailed Implementation

[0054] In the following description, numerous details are provided to enable a thorough understanding of the invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the invention, and that the invention can be practiced without one or more of these details. Furthermore, to avoid obscuring the invention, some technical features well-known in the art have not been described in detail.

[0055] To fully understand the embodiments of the present invention, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below; however, in addition to these detailed descriptions, the present invention may have other embodiments.

[0056] This invention provides an ultrasound imaging device. The ultrasound imaging device provided by this invention can be applied to an ultrasound imaging system. The following will describe in detail an ultrasound imaging device according to an embodiment of the invention, with reference to the accompanying drawings.

[0057] See Figure 1The ultrasound 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 body 20 and a switching element 201. The body 20 may have initial damping, and the body 20 is switchable between a first state and a second state via the switching element 201. When the body 20 is in the first state, the initial damping constrains the interventional catheter assembly 1, causing it to deform from its natural shape to a specified shape. When the body 20 is in the second state, the initial damping releases the constraint on the interventional catheter assembly 1, and the interventional catheter assembly 1 returns to its natural shape from the specified shape. The natural shape refers to the shape of the interventional catheter assembly 1 when it is not deformed. The specified shape refers to the shape of the interventional catheter assembly 1 when it is bent to the required plane, position, or angle during surgery. Initial damping means that the operating handle assembly 2 has a certain damping before use, allowing the interventional catheter assembly 1 to be directly adjusted without additional operating components, and locking the interventional catheter assembly 1 in the specified shape. Simultaneously, the interventional catheter assembly 1 can be reset by simply operating the switching element 201 to unlock it with one click. It should be noted that the switchable states of the main body 20 can include only the first and second states, or they can include the first state, the second state, and at least one state in between, where there can be an infinite number of consecutive states between these two states. Furthermore, the initial damping can constrain the interventional catheter assembly 1 when the main body 20 is in the first state, and its constraint can be directly released when it leaves the first state. That is, after leaving the first state, the damping of the main body 20 can be completely released, changing to the second state and then quickly returning to its natural form with one click. Alternatively, after leaving the first state, it can also change to a state with reduced damping. While the main body 20 has not reached the second state, the damping is small but still exists, allowing the interventional catheter assembly 1 to slowly return to its natural form. When the main body 20 reaches the second state, the damping can be completely released, allowing the interventional catheter assembly 1 to quickly return to its natural form.

[0058] The ultrasound 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 be unlocked with one click through the switching component 201. This not only ensures operability, but also makes the locking and unlocking operations simpler and improves the user experience.

[0059] See also Figure 1 , Figure 2 , Figure 3 and Figure 18The interventional catheter assembly 1 may include a tube body 11, an ultrasonic transducer 12 (a device for converting electromagnetic energy into mechanical energy, used for transmitting and receiving ultrasonic signals), and a traction member 13. The tube body 11 may include a support tube segment 101, a curved tube segment 102, and an interventional tip 103 connected sequentially along an axis. The stiffness of the support tube segment 101 may be greater than the stiffness of the curved tube segment 102. The support tube segment 101, the curved tube segment 102, and the interventional tip 103 may be connected together by welding or bonding. The support tube segment 101, the curved tube segment 102, and the interventional tip 103 may also be injection molded as a single unit. The ultrasonic transducer 12 may be disposed within the interventional tip 103. The traction member 13 may pass through the support tube segment 101 to connect to the body 20, and pass through the curved tube segment 102 to connect to the junction of the curved tube segment 102 and the interventional tip 103. The traction element 13 can be a metal wire or a non-metal wire, etc., and can be fixed to the connection between the curved tube segment 102 and the intervention head end 103 by means of welding, pasting, or binding. The ultrasonic transducer 12 near the curved tube segment 102 can be provided with a connecting end 123, which can be used to connect the wire 124. The connecting end 123 can be a solder pad connected to the wire 124. The switching element 201 is movable or rotatable relative to the main body 20. Initial damping, when the main body 20 is in the first state, causes the traction element 13 to pull the supporting tube segment 101 and the curved tube segment 102 from their natural shape to a specified shape. Initial damping, when the main body 20 is in the second state, releases the constraint on the traction element 13, and the traction element 13 pulls the supporting tube segment 101 and the curved tube segment 102 back to their natural shape from the specified shape. This configuration ensures the operability of the ultrasound imaging device, allowing the interventional head 103 to bend in four directions via the traction member 13 and the operating handle assembly 2, enabling ultrasound cross-sectional examination from different angles. Furthermore, the support tube section 101 and the bending tube section 102 have a certain degree of support and pushing ability.

[0060] See also Figure 3 and Figure 4The interventional head 103 may include a sound-transmitting tube body 111 and a imaging tube body 112. The sound-transmitting tube body 111 and the imaging tube body 112 are arranged circumferentially along the interventional catheter assembly 1, and can enclose a receiving space 141. An ultrasonic transducer 12 may be disposed within the receiving space 141. The ultrasonic transducer 12 may have an ultrasonic working end face 121, which is used to transmit and / or receive ultrasonic signals, and faces the sound-transmitting tube body 111. The sound-transmitting tube body 111 may be made of a material with good sound transmission properties, including but not limited to PEBAX material (PEBAX is a high-performance polymer, commonly known as nylon elastomer, which combines the properties of thermoplastics and rubber), silicone, silicone oil, etc. The imaging tube body 112 may be made of a material with imaging capabilities, for example, a material that can be visualized in an ultrasonic image during ultrasound imaging, including but not limited to BaSO4 or platinum-iridium alloy powder, etc. With this configuration, the interventional tip 103 integrates acoustic transmission and imaging functions, ensuring that the ultrasound transducer 12 can perform real-time imaging. Furthermore, the location of the interventional tip 103 can be simultaneously displayed under imaging system conditions. When the interventional tip 103 enters the lumen, the operator can know the specific location of the interventional tip 103 within the lumen through ultrasound images, thus avoiding blind spots that could affect the operator's operation and lead to punctures of organs or blood vessels.

[0061] See also Figures 3 to 5 The sound-transmitting tube body 111 may have an inner wall surface 1111. A sound-transmitting 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 sound-transmitting medium layer 142. In this way, 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 a gap may also exist 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 imaging tube body 112. To reduce the rigidity of the interventional tip 103, this gap may not be filled with material. However, if the tube material of the interventional tip 103 is relatively soft, it may be filled with a material with high or low sound transmission properties to provide support.

[0063] See also Figures 2 to 5The projection of the acoustic tube body 111 onto the ultrasonic working end face 121 at least partially covers the ultrasonic working end face 121. Preferably, the projection of the acoustic tube body 111 onto the ultrasonic working end face 121 can completely cover the ultrasonic working end face 121. The projection of the acoustic tube body 111 onto the ultrasonic working end face 121 can cover the ultrasonic working end face 121 in both the axial and radial directions of the interventional catheter assembly 1. Therefore, the ultrasonic signal emitted by the ultrasonic working end face 121 can be emitted through the acoustic tube body 111 to the maximum extent, and the reflected ultrasonic signal can also be received by the ultrasonic working end face 121 to the maximum extent through the acoustic tube body 111, ensuring the acoustic transmission performance of the acoustic tube body 111. Furthermore, the projection of the acoustic tube body 111 onto the ultrasonic working end face 121 can be smaller than the ultrasonic working end face 121. The projection of the acoustic tube body 111 toward the ultrasonic working end face 121 can also be larger than the ultrasonic working end face 121, but it is not in a completely covered state. In the above case, the ultrasonic transducer 12 can be rotated within the accommodating space 141 by the operation handle until it can satisfy the ultrasonic working end face 121 to transmit and receive ultrasonic signals.

[0064] See also Figure 2 and Figure 5 In the circumferential direction of the tube body 11, the cross-section of the acoustic tube body 111 can be a half-arc (i.e., the acoustic tube body 111 is a half-tube) or an arc shape less than half an arc. Thus, when the cross-section of the acoustic tube body 111 is a half-arc, the projection of the acoustic tube body 111 toward the ultrasonic working end face 121 can completely cover the ultrasonic working end face 121, ensuring the acoustic transmission performance of the acoustic tube body 111. When the cross-section of the acoustic tube body 111 is an arc shape less than half an arc, the size of the imaging tube body 112 can be maximized without affecting the transmission and reception of ultrasonic signals by the ultrasonic working end face 121, improving the imaging effect. Furthermore, the arc shape makes the surface of the interventional catheter assembly 1 as smooth as possible, reducing damage to blood vessels and organs.

[0065] See again Figure 2 and Figure 5 In the circumferential direction of the tube body 11, the cross-section of the imaging tube body 112 can be a 1 / 2 arc (i.e., the imaging tube body 112 is a half-tube) or an arc shape greater than 1 / 2 arc. The imaging effect of the imaging tube body 112 can display the position of the interventional head 103 under the imaging system. When the imaging tube body 112 is a 1 / 2 arc, it has a good imaging effect; when the imaging tube body 112 is an arc shape greater than 1 / 2 arc, the imaging effect is further improved while ensuring the ultrasonic performance of the ultrasonic transducer 12, thereby avoiding blind spots that could affect the operator's operation and lead to organ perforation.

[0066] See again Figures 2 to 5 The acoustic tube body 111 and the imaging tube body 112 are mated and connected to form a single head tube 110. A receiving space 141 can be disposed inside the head tube 110. Specifically, the acoustic tube body 111 can be injection molded from a material with good acoustic transmission properties, and the imaging tube body 112 can be injection molded from a material with good imaging effects, thus achieving secondary injection molding using two different materials. The acoustic tube body 111 and the imaging tube body 112 can also be fused or bonded together. This avoids the formation of tiny gaps in the head tube 110 formed by the two different material tube bodies, which could affect the use of the interventional catheter assembly 1.

[0067] See also Figure 3 , Figure 6 and Figure 11 The support pipe section 101 and the curved pipe section 102 are connected to form a flexible hose 100. The flexible hose 100 may include a metal pipe body 180 and an inner pipe body 150. The metal pipe body 180 may be sleeved on the outer surface of the inner pipe body 150. The outer wall surface of the metal pipe body 180 may have a helical cut groove. From the first end 1801 to the second end 1802 of the metal pipe body 180, the pitch of at least one helical cut groove is gradually changing, and / or the groove width of at least one helical cut groove is gradually changing, and the traction member 13 passes through the inner pipe body 150.

[0068] like Figure 12 Let P be the pitch of the helical groove on the metal tube 180, and L be the width of the helical groove. The pitch refers to the axial distance between two adjacent threads when the thread of the helical groove rotates one revolution. The width refers to the axial distance between the two sides of a thread groove on the pitch diameter line. It should be noted that the pitch and width of a segment of the helical groove on the metal tube 180 can both be gradually changed, or one can be gradually changed while the other remains constant. The gradual change pattern of the pitch and width can satisfy an arithmetic sequence, and to meet the support and pushing requirements of the metal tube 180, the arithmetic progression of the pitch can be greater than the arithmetic progression of the width.

[0069] Furthermore, at least one section of the spiral cutting groove has a gradually changing pitch and groove width. This can be because the pitch and groove width are different between each thread, or several adjacent threads can be grouped together, with the same pitch and groove width within the same group, and different pitch and groove width between each group.

[0070] This design, with its spirally cut grooves on the metal tube 180, achieves a gradual change in the rigidity of the metal tube 180 through the gradual variation of the spiral groove pitch and / or groove width. This enhances the flexibility of the metal tube 180 while also satisfying its support and pushing properties. Combined with the traction member 13 inserted through the inner tube 150, the entire interventional catheter assembly 1 can be actively bent and adjusted by controlling the operating handle assembly 2 to drive the traction member 13. This increases the bending degree of the interventional catheter assembly 1 in different directions, thereby meeting the required maneuverability during operation. Furthermore, when using the interventional catheter assembly 1, it can also passively bend under the action of obstacles within the lumen.

[0071] See also Figure 3 and Figure 11 The metal tube body 180 may include a curved flexible tube segment 1810 and a supporting flexible tube segment 1820. The curved flexible tube segment 1810 may be located near the first end 1801, and the supporting flexible tube segment 1820 may be located near the second end 1802. The stiffness of the supporting flexible tube segment 1820 may be greater than the stiffness of the curved flexible tube segment 1810. The second end 1802 may be located further away from the insertion end than the first end 1801. The stiffness of the supporting flexible tube segment 1820 may be greater than the stiffness of the curved flexible tube segment 1810. With this configuration, the curved flexible tube segment 1810 has better flexibility, and the supporting flexible tube segment 1820 has better support and pushability, thereby meeting the maneuverability required by the operator. Since the interventional catheter assembly 1 typically has a certain length, in order to meet the maneuverability required by the operator, the length of the supporting flexible tube segment 1820 may be greater than the length of the curved flexible tube segment 1810.

[0072] In one embodiment of the invention, in conjunction with reference to [reference needed] Figure 11 and Figure 13 The curved flexible tube segment 1810 can be connected to the supporting flexible tube segment 1820. From the first end 1801 to the second end 1802, at least one of the pitch and width of the helical cutting groove can be gradually changed. For example, from the first end 1801 to the second end 1802, the pitch of the helical cutting groove gradually increases, and the width of the helical cutting groove gradually increases; or from the first end 1801 to the second end 1802, the pitch of the helical cutting groove gradually decreases, and the width of the helical cutting groove gradually decreases; or from the first end 1801 to the second end 1802, the pitch of the helical cutting groove gradually increases, and the width of the helical cutting groove remains unchanged. The curved flexible tube segment 1810 of the interventional catheter assembly 1 can form a shape similar to a "fishhook" when bent. With this configuration, the rigidity of the metal tube body 180 gradually changes, thereby increasing the degree of bending of the interventional catheter assembly 1 in different directions, making the interventional catheter assembly 1 suitable for scenarios requiring a large degree of bending. Of course, it is possible that the pitch and width of the spiral cutting groove are equal from the first end 1801 to the second end 1802.

[0073] In another embodiment of the invention, see reference to Figures 14 to 16 The bent tubing segment 1810 may have a remote end 1811, away from the first end 1801. From the first end 1801 to the remote end 1811, the pitch of the helical cutting grooves may be equal, and the width of the helical cutting grooves may be equal. In this case, the bent tubing segment 1810 will bend uniformly when bent, forming a shape close to an arc. This configuration makes the interventional catheter assembly 1 suitable for scenarios requiring uniform bending.

[0074] See Figure 14 The metal tube 180 may also have a transition section 1830. The transition section 1830 may have a first connecting end 1831 and a second connecting end 1832. The first connecting end 1831 may be connected to the curved hose section 1810. The second connecting end 1832 may be connected to the supporting hose section 1820. From the first connecting end 1831 to the second connecting end 1832, the pitch of the helical cutting groove may gradually increase from P1 to P2, and the groove width may be equal; wherein, P1 is the pitch of the helical cutting groove at the connection point between the curved hose section 1810 and the first connecting end 1831, and P2 is the pitch of the helical cutting groove at the connection point between the supporting hose section 1820 and the second connecting end 1832. The pitch of a small section where the first connecting end 1831 connects to the curved hose section 1810 may be equal or gradually changing, and the pitch of a small section where the second connecting end 1832 connects to the supporting hose section 1820 may be equal or gradually changing. When the pitch of the transition section 1830 gradually changes at the connection between the first connecting end 1831 and the curved hose section 1810, and the pitch of the second connecting end 1832 also gradually changes at the connection between the second connecting end 1832 and the supporting hose section 1820, a gradual change in overall stiffness between the transition section 1830 and the supporting hose section 1820 can be achieved. The width of the helical cutting groove on the transition section 1830 can be equal to the width of the helical cutting groove on the curved hose section 1810. It is understood that the minimum pitch of the helical cutting groove on the transition section 1830 is greater than the pitch of the helical cutting groove on the curved hose section 1810. Thus, by setting the transition section 1830, a gradual change in stiffness between the supporting hose section 1820 and the curved hose section 1810 can be achieved.

[0075] The support hose segment 1820 may have a third connecting end 1821 connected to the second connecting end 1832. From the third connecting end 1821 to the second end 1802, the pitch of the helical cutting groove gradually increases from P2. It is understood that the minimum pitch of the helical cutting groove on the support hose segment 1820 is greater than the maximum pitch of the helical cutting groove on the transition segment 1830. This configuration increases the flexibility of the support hose segment 1820 while satisfying the required support and pushing properties. Furthermore, the groove width of the helical cutting groove on the support hose segment 1820 can be gradually changing or equal.

[0076] See Figure 16 The metal tube 180 may also have a transition section 1830, which may have a first connecting end 1831 and a second connecting end 1832. The first connecting end 1831 may be connected to the curved hose section 1810, and the second connecting end 1832 may be connected to the supporting hose section 1820. From the first connecting end 1831 to the second connecting end 1832, the width of the spiral cutting groove gradually decreases from L1 to L2, and the pitch of the spiral cutting groove is equal; wherein, L1 is the width of the spiral cutting groove at the connection between the curved hose section 1810 and the first connecting end 1831, and L2 is the width of the spiral cutting groove at the connection between the supporting hose section 1820 and the second connecting end 1832. The width of the groove in the small section where the first connecting end 1831 connects to the curved hose section 1810 may be equal or gradually changing, and the width of the groove in the small section where the second connecting end 1832 connects to the supporting hose section 1820 may be equal or gradually changing. When the groove width at the connection point between the first connecting end 1831 and the curved hose section 1810 gradually changes, and the groove width at the connection point between the second connecting end 1832 and the supporting hose section 1820 also gradually changes, a gradual change in overall stiffness between the transition section 1830 and the supporting hose section 1820 can be achieved. The pitch of the helical cutting groove on the transition section 1830 can be equal to the pitch of the helical cutting groove on the curved hose section 1810. It is understood that the maximum groove width of the helical cutting groove on the transition section 1830 is smaller than the groove width of the helical cutting groove on the curved hose section 1810. Thus, by setting the transition section 1830, a gradual transition in stiffness between the supporting hose section 1820 and the curved hose section 1810 can be achieved.

[0077] The support hose segment 1820 may have a third connecting end 1821 connected to the second connecting end 1832. From the third connecting end 1821 to the second end 1802, the width of the helical cutting groove gradually decreases from L2. It is understood that the maximum width of the helical cutting groove on the support hose segment 1820 is less than the minimum width of the helical cutting groove on the transition segment 1830. This configuration satisfies the required support and pushing properties of the support hose segment 1820. Furthermore, the pitch of the helical cutting groove on the support hose segment 1820 can be gradually changing or equal.

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

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

[0080] See also Figure 14 and Figure 16 The length of the transition section 1830 can be less than the length of the bent hose section 1810. This arrangement prevents the length of the transition section 1830 from exceeding that of the bent hose section 1810, which would affect the support and pushing properties of the support hose section 1820. In an embodiment not shown, the length of the transition section 1830 can be equal to the length of the bent hose section 1810.

[0081] See again Figure 3 and Figure 11 The outer diameter of the metal tube 180 remains constant from the first end 1801 to the second end 1802. This allows the interventional catheter assembly 1 to have a certain degree of curvature while ensuring the consistency of its outer diameter. (See also...) Figure 3 and Figure 17 The outer diameter of the metal tube 180 can 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 in the outer diameter of the metal tube 180.

[0082] In one embodiment of the present invention, in conjunction with reference to Figures 2 to 8 The flexible tubing 100 may further include an outer tube 170. The inner tube 150, metal tube 180, and outer tube 170 can be connected sequentially from the inside out. For example, the inner tube 150 and outer tube 170 can be connected to the metal tube 180 respectively via an adhesive layer 160. The outer tube 170 is connected to the wall of the tip tube 110, and the outer diameter of the outer tube 170 is the same as the outer diameter of the tip tube 110. The wall of the tip tube 110 and the outer tube 170 can be connected together by welding, fusion, or adhesive. This configuration maintains the consistency of the outer diameter of the interventional catheter assembly 1, preventing inconsistencies in the outer diameter of the interventional catheter assembly 1 due to the connection of the tip tube 110 wall to the inner tube 150 or the metal tube 180, which could lead to organ damage.

[0083] The stiffness of the tip tube 110 can be less than that of the metal tube body 180. Furthermore, the stiffness of the tip tube 110 can support the stiffness of the tube segment 101 and the curved tube segment 102. This arrangement allows the tip to be sufficiently flexible to prevent the interventional catheter from moving within the lumen and puncturing organs.

[0084] In another embodiment of the present invention, see reference to Figure 3 , Figure 6 , Figure 9 and Figure 10The flexible hose 100 may also include an outer tube 170 and a braided layer 190. The inner tube 150, metal tube 180, braided layer 190, and outer tube 170 can be connected sequentially from the inside to the outside. The material of the inner tube 150 can be a polymer material, including but not limited to PTFE (Polytetrafluoroethylene, abbreviated PTFE, a polymer obtained by polymerization of tetrafluoroethylene as a monomer), Pebax (PEBAX is a high-performance polymer, commonly known as nylon elastomer, which combines the properties of thermoplastic plastics and rubber), PA (PA material is polyamide material, also known as nylon, a synthetic polymer material), etc. The inner tube 150, metal tube 180, braided layer 190, and outer tube 170 can be connected by adhesive bonding. For example, the metal tube 180 and inner tube 150 can be connected by applying an adhesive layer 160, and the metal tube 180 and outer tube 170 can be connected by applying an adhesive layer 160. The braided layer 190 can be formed by braiding stainless steel wire, but other linear materials are also possible. The stiffness gradient can be partially adjusted by changing the configuration of the braided layer 190 (e.g., changing the braid PIC count, wire diameter, or wire pitch). Thus, under the combined adjustment of the metal tube 180, inner tube 150, outer tube 170, and braided layer 190, the range of adjustment for the stiffness gradient of the interventional catheter assembly 1 is wider, allowing for the selection of an appropriate interventional catheter assembly 1 according to different application scenarios.

[0085] See also Figure 3 , Figure 9 , Figure 10 and Figure 11 The outer tube 170 may have a third end corresponding to the first end 1801 and a fourth end corresponding to the second end 1802. The stiffness of the outer tube 170 gradually changes from the third end to the fourth end. Different materials can be used on the outer tube 170, including but not limited to polymer materials such as PTFE, Pebax, PA, and composite carbon fiber. The thickness of the outer tube 170 may also vary, or even gradually change, from the third end to the fourth end. A gradual change in stiffness can be achieved by using polymer tubing of different materials or thicknesses on an outer tube 170. Different outer tubes 170 using different materials or thicknesses of polymer tubing will have different stiffnesses. Thus, under the combined adjustment of the inner tube 150 of the metal tube 180, the outer tube 170, and the braided layer 190, the range of adjustment for the gradual change in stiffness of the interventional catheter assembly 1 is widened, allowing for the selection of an appropriate interventional catheter assembly 1 according to different application scenarios.

[0086] See also Figure 3 , Figure 7 , Figure 9 and Figure 11The inner tube 150 may be provided with a first through hole 151 and multiple second through holes 152. The first through hole 151 can penetrate from one end of the inner tube 150 to the other end and form a first cavity 1511 in the middle of the inner tube 150. The second through holes 152 can penetrate from one end of the inner tube 150 to the other end and form a second cavity 1521 on the inner tube 150 at a position away from the center of the inner tube 150. The traction member 13 can be inserted into the second cavity 1521. The inner tube 150 can be a multi-lumen tube. Specifically, the inner tube 150 can be provided with one first through hole 151 and four second through holes 152. The first through hole 151 forms a first cavity 1511, and the four second through holes 152 form four second lumens 1521. Thus, the inner tube 150 forms a tube with one large cavity and four small lumens. The traction member 13 can be inserted into the four second lumens 1521. When one of the two second lumens 1521 located diagonally is pulled and bent by the traction member 13, the bent flexible tube segment 1810 and the supporting flexible tube segment 1820 bend in the corresponding direction. The inner tube 150 has multiple lumens, resulting in high tube rigidity. Therefore, the interventional catheter assembly 1 with this inner tube 150 can be used in environments requiring strong support and pushability.

[0087] Combined again Figure 3 , Figure 6 , Figure 8 , Figure 10 and Figure 11The inner tube 150 may include a first cavity tube 153 and a plurality of second cavities tubes 154. The outer periphery of the first cavity tube 153 may be recessed towards the center of the inner tube 150 to form a plurality of recesses 155. The plurality of second cavities tubes 154 and the plurality of recesses 155 may correspond one-to-one and be located in their respective recesses 155. The traction member 13 may be inserted through the second cavity tubes 154. The inner tube 150 can be composed of multiple tubes. Specifically, the inner tube 150 can include a first cavity tube 153 and four second cavity tubes 154. The outer periphery of the first cavity tube 153 is recessed towards the center of the inner tube 150 to form four recesses 155. The four second cavity tubes 154 correspond one-to-one with the four recesses 155 and are located in their respective recesses 155. Thus, the inner tube 150 is composed of a large single cavity tube and four small single cavity tubes. The traction member 13 can be inserted through the four small single cavity tubes. When one of the two small single cavity tubes located diagonally is pulled and bent by the traction member 13, the bending hose section 1810 and the supporting hose section 1820 bend in the corresponding direction. The inner tube 150 with multiple tubes has lower rigidity than the inner tube 150 with multiple cavities. Furthermore, based on current technology, the diameter of the inner tube 150 with multiple tubes can be smaller than the diameter of the inner tube 150 with multiple cavities. Thus, the inner tube 150 is more flexible, and the interventional catheter assembly 1 with this inner tube 150 can be used in complex and tortuous luminal environments. The lower rigidity of the inner tube 150, combined with the gradually varying rigidity of the metal tube 180, allows for a wider range of adjustable rigidity, facilitating flexible position and angle adjustments within the lumen.

[0088] See also Figure 2 , Figure 3 and Figure 11 A rigid transition section 104 may be provided between the interventional tip 103 and the curved flexible tube segment 1810. The rigid transition section 104 may have a fourth connecting end 1041 and a fifth connecting end 1042. The fourth connecting end 1041 can be connected to the interventional tip 103. The fifth connecting end 1042 can be connected to the curved flexible tube segment 1810. The stiffness of the rigid transition section 104 gradually changes from the fourth connecting end 1041 to the fifth connecting end 1042. Preferably, the stiffness of the rigid transition section 104 gradually decreases from the fourth connecting end 1041 to the fifth connecting end 1042. Thus, by providing the rigid transition section 104, a gradual change in stiffness is achieved between the curved flexible tube segment 1810 and the tip tube 110.

[0089] In one embodiment of the invention, in conjunction with reference to [reference needed] Figure 2 , Figure 18 , Figure 19 and Figure 20The main body 20 may be provided with a mating part 220, a second rotating part 230, and an elastic part 240. The switching part 201, mating part 220, and second rotating part 230 are all rotatable about the axis of the main body 20. The main body 20 may include a gripping part 23, a shaft 24, and an end cap 25, with the shaft 24 connected between the gripping part 23 and the end cap 25. The interventional catheter assembly 1 may be connected to the end cap 25. The switching part 201, mating part 220, and second rotating part 230 may be sleeved on the shaft 24. In the illustrated embodiment, the switching part 201 is closer to the gripping part 23, and the second rotating part 230 is closer to the end cap 25; in other embodiments, the switching part 201 may be closer to the end cap 25, and the second rotating part 230 closer to the gripping part 23. Similarly, the elastic part 240 may be connected to the gripping part 23, the end cap 25, or the shaft 24. The traction member 13 may be in the form of a control wire. The mating member 220 can be used to drive the interventional tip 103 of the interventional catheter assembly 1 to move in a first plane via the first control wire 131. The second rotating member 230 can be used to drive the interventional tip 103 of the interventional catheter assembly 1 to move in a second plane via the second control wire 132. The two ends of the first control wire 131 can be fixedly connected to the connection between the interventional tip 103 and the flexible tubing 100. At least a portion of the part between these two ends can be connected to the mating member 220. For example, the two ends of the first control wire 131 can be fixedly connected to the connection between the interventional tip 103 and the flexible tubing 100. In this case, the first control wire 131 can be in a "U" shape, and the part between the two ends of the first control wire 131 can form an arc segment, which is the arc segment part of the "U" shape. The mating component 220 may be provided with a winding post. The arc-shaped segment of the first control wire 131 can bypass the winding post, or a portion of the arc-shaped segment of the first control wire 131 can be wound around the winding post. Thus, when the mating component 220 rotates, the winding post can drive the first control wire 131 to move. For example, one end of the "U"-shaped first control wire 131 can extend while the other end retracts, thereby driving the interventional head end 103 of the interventional catheter assembly 1 to move within the first plane. This allows the mating component 220 to drive the interventional head end 103 of the interventional catheter assembly 1 to move within the first plane via the first control wire 131. The second rotating component 230 can similarly drive the interventional head end 103 of the interventional catheter assembly 1 to move within the second plane via the second control wire 132. The first plane and the second plane can be perpendicular to each other or at any angle to each other. Under the combined action of the first control wire 131 and the second control wire 132, the flexible tube 100 of the interventional catheter assembly 1 can be bent at any angle, so that the interventional head end 103 of the interventional catheter assembly 1 can reach the predetermined position at a predetermined angle.The elastic element 240 can abut against the switching element 201 to apply a force to the switching element 201. For example, one end of the elastic element 240 can be connected to the grip 23, and the other end can abut against the switching element 201. The elastic element 240 can be a spring or any other suitable form, and the force applied by the elastic element 240 to the switching element 201 can be generated by spring deformation. The force applied by the elastic element 240 to the switching element 201 can be continuous. Taking the spring-type elastic element 240 as an example, the spring-type elastic element 240 is located between the switching element 201 and the grip 23. The elastic element 240 can always be in a compressed state, thereby continuously applying a force to the switching element 201.

[0090] The switching element 201 is movable between a first position and a second position along the axis of the main body 20 (the BB axis in the diagram). The switching element 201 in the first position can be connected to the mating element 220, while the switching element 201 in the second position can be spaced apart from the mating element 220; that is, the second position is further away from the mating element 220 than the first position. The force applied by the elastic element 240 to the switching element 201 can keep the switching element 201 in the first position. This means that, without external force acting on the control handle as a whole, the elastic element 240 can move the switching element 201 from the second position to the first position, and can continuously apply a force from the second position to the first position to the switching element 201 in the first position. Figure 20As shown, the switching element 201 is currently in the first position. When the switching element 201 is in the first position, the mating element 220 can be connected to the switching element 201, allowing the switching element 201 to rotate synchronously. The mating element 220 can be connected to the switching element 201 in the first position through snap-fit, abutment, or other various forms, allowing them to rotate synchronously. It is understood that this connection only ensures that the mating element 220 and the switching element 201 can rotate at least synchronously. This connection between the mating element 220 and the switching element 201 should be detachable. When the switching element 201 moves from the first position to the second position, the connection between the mating element 220 and the switching element 201 will be broken. Under the force applied to the switching element 201 by the elastic element 240, the switching element 201 and the mating element 220 can be in a mutually abutting state. Furthermore, the mating element 220 and the second rotating element 230 can form rotational damping between each other. Rotational damping means that when only a small external force is applied, the mating component 220 and the second rotating component 230 cannot rotate relative to each other. This small external force can be the elastic force generated by the deformation of the interventional catheter assembly 1, transmitted to the mating component 220 via the first control wire 131 and / or to the second rotating component 230 via the second control wire 132. In this case, the mating component 220 can abut against the second rotating component 230. Based on the mutual abutment between the switching component 201 and the mating component 220, the mating component 220 can also abut against the second rotating component 230, thus creating a large frictional force between them, thereby achieving rotational damping between the mating component 220 and the second rotating component 230. Similarly, a winding assembly 250 can be provided between the mating member 220 and the second rotating member 230. The mating member 220 abuts against the winding assembly 250, and the winding assembly 250 abuts against the second rotating member 230. In this way, based on the mutual abutment between the switching member 201 and the mating member 220, the mating member 220, the winding assembly 250 and the second rotating member 230 can also abut against each other, thereby realizing the rotational damping between the mating member 220 and the second rotating member 230.

[0091] When the switching element 201 is in the second position, it can disengage from the mating element 220. This disengagement can mean that the switching element 201 is not in contact with the mating element 220, or that while it is in contact, they are not in a tightly pressed state, resulting in very low friction. Alternatively, they can be in close contact without any friction. In this case, there is essentially no constraint on the mating element 220, and therefore no rotational damping between the mating element 220 and the second rotating element 230.

[0092] In use, the switching element 201 is held in the first position by the elastic element 240 in its natural state. At this time, there is rotational damping between the mating element 220 and the second rotating element 230. Rotating the switching element 201 can drive the mating element 220 to rotate, thereby controlling the movement of the interventional head 103 of the interventional catheter assembly 1 through the first control wire 131. In addition, rotating the second rotating element 230 can control the movement of the interventional head 103 of the interventional catheter assembly 1 through the second control wire 132. It is understood that the external force applied around the axis BB of the main body 20 when rotating the switching element 201 and the second rotating element 230 is obviously greater than the force generated by the rotational damping. Thus, after the interventional head 103 of the interventional catheter assembly 1 reaches the predetermined position at a predetermined angle, the external force is removed. Under the action of rotational damping, the mating element 220 and the second rotating element 230 will remain in the position before the external force was removed. In other words, the position locking of the interventional head 103 of the interventional catheter assembly 1 is achieved through rotational damping. Since the rotational damping between the mating member 220 and the second rotating member 230 is always present when the switching member 201 is in the first position, locking can be achieved at any time simply by removing the external force. When it is necessary to unlock the position of the interventional tip 103 of the interventional catheter assembly 1, an external force can be applied to the switching member 201 in the direction of the axis BB of the main body 20, causing the switching member 201 to move from the first position to the second position. This external force needs to be greater than the force exerted by the elastic member 240 on the switching member 201. For example, if the elastic member 240 in the form of a spring is in a compressed state and continuously applies a force pointing towards the first position to the switching member 201, an external force can be applied to overcome the force exerted by the elastic member 240 on the switching member 201, causing the switching member 201 to move 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 in 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. The interventional catheter assembly 1 generates elastic force due to deformation. There is no rotational damping between the mating part 220 and the second rotating part 230, so the first control wire 131 and the second control wire 132 cannot constrain the interventional catheter assembly 1. The interventional catheter assembly 1 can be quickly reset under the action of the elastic force generated by its own deformation, thus realizing the unlocking and reset of the interventional catheter assembly 1.

[0093] With this configuration, when the switching element 201 is not subjected to external force, it will be located in the first position under the action of the elastic element 240. The mating element 220 is connected to the switching element 201 and can rotate synchronously with the switching element 201. Moreover, the mating element 220 and the second rotating element 230 form rotational damping between each other. At this time, the switching element 201 can be controlled by the first control wire 131 to drive the interventional head end 103 of the interventional catheter assembly 1 to move in the first plane. The second rotating element 230 can be controlled by the second control wire 132 to drive the interventional head end 103 of the interventional catheter assembly 1 to move in the second plane. Under the action of rotational damping, the interventional head end 103 of the interventional catheter assembly 1 can be maintained at any angle without resetting when it moves to any angle. When the interventional tip 103 of the interventional catheter assembly 1 needs to be reset, an external force can be applied to the switching member 201 to overcome the force of the elastic member 240 and reach the second position. The second position is further away from the mating member 220 than the first position. At this time, the switching member 201 disengages from the mating member 220, thereby naturally releasing the rotational damping between the mating member 220 and the second rotating member 230. Both the mating member 220 and the second rotating member 230 are no longer constrained, and therefore there is no locking effect on the interventional catheter assembly 1. The interventional catheter assembly 1 will quickly complete the reset under its own force. When using this operating handle assembly 2, the rotational damping is always present when moving the interventional tip 103 of the interventional catheter assembly 1. Locking the position and angle of the interventional catheter assembly 1 requires no additional operation, making locking very convenient. Only applying an external force to the switching member 201 is needed to unlock and reset the interventional catheter assembly 1, which is equivalent to achieving one-button reset, making unlocking also very convenient and fast. This operating handle assembly 2 makes locking and unlocking the interventional catheter assembly 1 more convenient and easier to operate, resulting in a better user experience.

[0094] See also Figure 2 , Figure 19 , Figure 20 and Figure 21A winding assembly 250 may be provided on the main body 20. The winding assembly 250 may be located between the mating member 220 and the second rotating member 230. When the switching member 201 is in the first position, the switching member 201, the mating member 220, the winding assembly 250 and the second rotating member 230 may abut in sequence to form rotational damping between the mating member 220 and the second rotating member 230. The winding assembly 250 may change the extension direction of the first control wire 131 and the second control wire 132. The first control wire 131 and the second control wire 132 extending around the axis BB of the main body 20 may enter the interior of the winding assembly 250 through an opening on the side wall of the winding assembly 250, and under the guidance of the steering column 251 inside the winding assembly 250, the first control wire 131 and the second control wire 132 that originally extended around the axis BB of the main body 20 may be turned to extend along the direction of the axis BB of the main body 20, thereby extending axially along the interventional catheter assembly 1 to the interventional head end 103. At least a portion of both the first control wire 131 and the second control wire 132 can be wound around the winding assembly 250. This ensures that the winding assembly 250 can change the extension direction of both the first control wire 131 and the second control wire 132, thereby making the wiring within the operating handle assembly 2 more efficient and preventing the first control wire 131 and the second control wire 132 from tangling together. The winding assembly 250 facilitates the movement of the intervention head end 103 by rotating the mating member 220 and the second rotating member 230 around the axis BB of the main body 20. Furthermore, the winding assembly 250 prevents the first control wire 131 and the second control wire 132 from tangling together after the mating member 220 and / or the second rotating member 230 have rotated.

[0095] See also Figure 2 and Figure 19 When the switching element 201 is in the first position, the mating element 220 and the winding assembly 250 can abut against each other via the friction plate 260. The friction plate 260 can be provided between the mating element 220 and the winding assembly 250. When the switching element 201 is in the first position, the mating element 220 and the winding assembly 250 are pressed together; in fact, the mating element 220 abuts against the winding assembly 250 via the friction plate 260. The friction plate 260 increases the friction between the mating element 220 and the winding assembly 250, resulting in greater rotational damping between the mating element 220 and the second rotating element 230 when the switching element 201 is in the first position. Therefore, the automatic locking of the interventional tip 103 of the interventional catheter assembly 1, achieved without external force, can be more stable.

[0096] When the switching element 201 is in the first position, the winding assembly 250 and the second rotating element 230 can abut against each other via the friction plate 260. The friction plate 260 can be provided between the winding assembly 250 and the second rotating element 230. When the switching element 201 is in the first position, the winding assembly 250 and the second rotating element 230 are pressed together; in fact, the winding assembly 250 abuts against the second rotating element 230 via the friction plate 260. The friction plate 260 increases the friction between the winding assembly 250 and the second rotating element 230, resulting in greater rotational damping between them when the switching element 201 is in the first position. Therefore, the automatic locking of the interventional tip 103 of the interventional catheter assembly 1, achieved without external force, can be more stable.

[0097] See Figure 22 The switching component 201 can be provided with a limiting groove with an opening facing the mating component 220. The mating component 220 can be provided with a limiting block protruding towards the switching component 201. When the switching component 201 is in the first position, the limiting block can be engaged in the limiting groove. The limiting block and the limiting groove can be in any 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 snap-fitted. In this way, when the switching component 201 is in the first position, the connection between the switching component 201 and the mating component 220 is simpler, and when the switching component 201 moves from the first position to the second position, the connection between the switching component 201 and the mating component 220 is easy to disassemble. Such an operating handle assembly 2 has a simple overall structure and is easy to implement.

[0098] Furthermore, the switching member 201 may be provided with a plurality of first toothed protrusions 2011 protruding toward the mating member 220, and there may be a plurality of limiting grooves, which may be formed between two adjacent first toothed protrusions 2011. The mating member 220 may be provided with a plurality of second toothed protrusions 221 protruding toward the switching member 201, and the plurality of second toothed protrusions 221 may each form a limiting block. When the switching member 201 is in the first position, a gear-like connection may be formed between the plurality of first toothed protrusions 2011 and the plurality of second toothed protrusions 221, thus making the rotation of the mating member 220 by the switching member 201 more stable. The first toothed protrusions 2011 may be any suitable form of toothed protrusion, such as end face teeth, conical teeth, or bevel teeth. Similarly, the plurality of second toothed protrusions 221 may also be any suitable form of toothed protrusion, such as end face teeth, conical teeth, or bevel teeth.

[0099] See also Figure 20 and Figure 22The mating member 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 mating member 220 and apply a force to the mating member 220 to maintain it in the first initial position. The first reset member 270 may be a torsion spring or any other suitable form. Due to the presence 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 mating member 220, and the rotational damping between the mating member 220 and the second rotating member 230 is also released. Thus, the mating member 220 returns to the first initial position under the action of the first reset member 270. During this process, the interventional catheter assembly 1 will be driven to return to its initial state more quickly via the first control wire 131. When the operating handle assembly 2 is unlocked, not only does the elastic force generated by the deformation of the interventional catheter assembly 1 itself reset the interventional catheter assembly 1, but under the action of the first reset member 270, the mating member 220 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.

[0100] See Figure 23 The mating part 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 may be wound around the first winding portion 222. The first reset member 270 is wound around the first winding portion 222. This arrangement of the first reset member 270 makes 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 along the axis BB, which makes the internal structure of the operating handle assembly 2 more compact.

[0101] See also Figure 20 and Figure 23The 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 maintain it 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 mating member 220, and the rotational damping between the mating 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 return to its initial state more quickly via the second control wire 132. When the operating handle assembly 2 is unlocked, not only does the elastic force generated by the deformation of the interventional catheter assembly 1 itself reset the interventional catheter assembly 1, but the second rotating member 230 can also drive the interventional catheter assembly 1 to reset under the action of the second reset member 280. Thus, the reset of the interventional catheter assembly 1 after the operating handle assembly 2 is unlocked can be faster.

[0102] See also 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 may be wound around the second winding portion 231. The second reset member 280 being wound around the second winding portion 231 simplifies the overall structure and makes it easier to implement. Furthermore, this second reset member 280 does not occupy space along the axis BB of the main body 20, allowing for a more compact internal structure of the operating handle assembly 2.

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

[0104] In another embodiment of the invention, see reference to Figure 24 and Figure 26 The main body 20 may be provided with a damping member 290, a first rotating member 210, and a second rotating member 230, both of which are rotatable about the axis of the main body 20. The main body 20 may include a gripping part 23, a shaft 24 (not shown in the figure), and an end cap 25, with the shaft 24 connected between the gripping part 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 24. In the illustrated embodiment, the first rotating member 210 is closer to the gripping part 23, while the second rotating member 230 is closer to the end cap 25. In other embodiments, the first rotating member 210 may be closer to the end cap 25, while the second rotating member 230 may be closer to the gripping part 23. The relative positions of the switching member 201, the first rotating member 210, and the second rotating member 230 may be arbitrary, for example, as shown in the figure. Figure 24 As shown, the switching member 201, the first rotating member 210, and the second rotating member 230 can be arranged sequentially. In other embodiments not shown, the second rotating member 230, the first rotating member 210, and the switching member 201 can also be arranged sequentially, or the first rotating member 210, the switching member 201, and the second rotating member 230 can be arranged sequentially. Here, the first rotating member 210 and the second rotating member 230 are used only as a distinction and are not specifically limited.

[0105] See also Figure 2 , Figure 27 and Figure 28 The first rotating member 210 can be used to drive the interventional tip 103 of the interventional catheter assembly 1 to move in a first plane via the first control wire 131, and the second rotating member 230 can be used to drive the interventional tip 103 of the interventional catheter assembly 1 to move in a second plane via 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 can be connected to the first connecting member 212 in various forms such as snap-fit, welding or threaded connection and is sleeved on the first connecting member 212. The operator can rotate the first rotating sleeve 211 to drive the first connecting member 212 to rotate. The fixing method and operation process of the first control wire 131 and the second control wire 132 can be the same as in the above embodiments, and will not be described in detail here.

[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 axis of the main body 20 (the CC axis 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 spirally extended or obliquely extended about the axis CC of the main body 20. Thus, when the switching member 201 rotates about the axis CC of the main body 20, the damping member 290 abutted by the switching member 201 will move along the axis CC 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 against the first rotating member 210, or when it is in the second position, it can disengage from the first rotating member 210. This will be described in detail below. For the damping member 290 located between the first position and the second position, the damping member 290 is in contact with the first rotating member 210, and the frictional force between the damping member 290 and the first rotating member 210 varies depending on 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, it is pressed against the first rotating member 210, at which time there is a large frictional force between the damping member 290 and the first rotating member 210; 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, it is disengaged from the first rotating member 210 or there is only a small frictional force between it and the first rotating member 210. Here, the first position and the second position are only used as a distinction and are not specifically limited. When the switching element 201 is in the first angular position, the damping element 290 can be in the first position. At this time, the damping element 290 can abut against the first rotating element 210, so that the first rotating element 210 and the second rotating element 230 can form rotational damping between each other. When the switching element 201 is in the first angular position, the switching element 201 abuts against the damping element 290, causing the damping element 290 to be in the first position. The first rotating element 210 may 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 element 290 in the first position can abut against the first connecting member 212, so that the switching element 201, the damping element 290, and the first rotating element 210 can be pressed together in sequence. The damping element 290 abutting against the first connecting member 212 can be a direct abutment between the two. Alternatively, the damping element 290 can indirectly abut against the first connecting element 212. This indirect abutment can be achieved through various forms of connecting elements such as the elastic element 240 or the friction plate 260.Rotational damping means that when only a small external force is applied, such a 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 generates elastic force due to deformation. This small external force can be transmitted to the first rotating member 210 via the first control wire 131, or it can be transmitted to the second rotating member 230 via the second control wire 132. At this time, the first rotating member 210 can abut against the second rotating member 230. Based on the mutual abutment of the switching member 201 and the damping member 290, and the mutual abutment of the damping member 290 and the first rotating member 210, the first rotating member 210 can also abut against the second rotating member 230. Therefore, a large frictional force can exist between the first rotating member 210 and the second rotating member 230, thus achieving rotational damping between them. Similarly, a winding assembly 250 can be 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, based on the mutual abutment of the switching member 201 and the damping member 290 and the mutual abutment of the damping member 290 and the first rotating member 210, the first rotating member 210, the winding assembly 250 and the second rotating member 230 can also abut against each other in sequence, thereby realizing the rotational damping between the first rotating member 210 and the second rotating member 230.

[0107] When the switching element 201 is located between the first angular position and the second angular position, the damping element 290 can be located between the first position and the second position. At this time, the damping between the first rotating element 210 and the second rotating element 230 is small and less than the rotational damping between the first rotating element 210 and the second rotating element 230 when the switching element 201 is located in 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 organs caused by too fast reset.

[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 disengage from the first connecting member 212, and thus the damping member 290 can disengage from the first rotating member 210; or at this time, the damping member 290 and the first connecting member 212 can have only a small frictional force, and thus the damping member 290 and the first rotating member 210 can have only a small frictional force. At this time, the rotational damping can be considered released. The damping member 290 being disengaged from the first connecting member 212 in the second position 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 tightly pressed state, so the frictional force between them can be very small, or the damping member 290 and the first connecting member 212 are in just contact, and there is no frictional force between them in the just contact state. At this point, it is equivalent to the damping element 290 having no constraint on the first rotating element 210, and naturally there is no rotational damping between the first rotating element 210 and the second rotating element 230.

[0109] When this operating handle assembly 2 is in use, with the switching element 201 in the first angle position, the damping element 290 is also in the first position, and the damping element 290 and the first rotating element 210 are pressed together. There is rotational damping between the first rotating element 210 and the second rotating element 230. Rotating the first rotating element 210 can control the movement of the interventional tip 103 of the interventional catheter assembly 1 via the first control wire 131, and rotating the second rotating element 230 can control the movement of the interventional tip 103 via the second control wire 132. It is understood that the external force applied around the axis CC of the main body 20 when rotating the first rotating element 210 and the second rotating element 230 obviously needs to be greater than the damping force generated by the rotational damping. Thus, after the interventional tip 103 reaches the predetermined position at a predetermined angle, the external force is removed. Under the action of rotational damping, the first rotating element 210 and the second rotating element 230 will remain in the position before the external force was removed and will not rotate. This achieves position locking of the interventional tip 103 through rotational damping. Since the damping element 290 remains in the first position when the switching element 201 is in the first angular position, the rotational damping between the first rotating element 210 and the second rotating element 230 is always present, and locking can be achieved at any time simply by removing the external force. When it is necessary to unlock the position of the interventional head 103, an external force can be applied to the switching element 201 around the axis CC of the main body 20, causing the switching element 201 to rotate from the first angular position to the second angular position. When the switching element 201 is in the second angular position, the damping element 290 is no longer pressed against the first rotating element 210, and the rotational damping between the first rotating element 210 and the second rotating element 230 is released. Due to deformation, the interventional catheter assembly 1 generates elastic force. Since there is no rotational damping between the first rotating element 210 and the second rotating element 230, it is impossible to constrain the interventional catheter assembly 1 through the first control wire 131 and the second control wire 132. The interventional catheter assembly 1 can then quickly reset under the action of the elastic force generated by its own deformation, thus achieving the unlocking and reset of the interventional catheter assembly 1.

[0110] When the switching element 201 is in the first angular position, the damping element 290 is also in the first position, which can be considered as being in a locked state. After the interventional head 103 of the interventional catheter assembly 1 reaches the predetermined position at a predetermined angle, the position of the interventional head 103 can be locked. When the switching element 201 is in the second angular position, the damping element 290 is also in the second position, which can be considered as being in an unlocked state. The interventional catheter assembly 1 can quickly reset under the elastic force generated by its own deformation. When the switching element 201 is between the first and second angular positions, the damping element 290 is also between the first and second positions. There is damping between the first rotating element 210 and the second rotating element 230, but the damping at this time is less than the rotational damping in the locked state. Understandably, with proper design, when the switching element 201 is located between the first and second angular positions, the interventional catheter assembly 1 can be reset under the elastic force generated by its own deformation. However, the reset speed at this time is slower than the reset speed in the unlocked state. Moreover, the closer the switching element 201 is to the second angular position, the smaller the damping between the first rotating element 210 and the second rotating element 230, so that the reset speed of the interventional catheter assembly 1 can be controlled.

[0111] It is worth noting that the first and second angular positions mentioned here may not be precise angular points; they can be two angular position intervals. In the locked state, the angular position of the switching member 201 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 and second positions mentioned here may not be precise points; they can be two position intervals. In the locked state, the position of the damping member 290 can be considered to be within the position interval corresponding to the first position. At this time, the damping member 290 presses against the first rotating member 210, creating 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. Specifically, the switching member 201 located within the angular position interval corresponding to the first angular position can ensure that the damping member 290 is located within the position interval corresponding to the first position; the switching member 201 located within the angular position interval corresponding to the second angular position can ensure that the damping member 290 is located within the position interval corresponding to the second position.

[0112] For example, see Figure 24 and Figure 26Each of the first rotating sleeve 211 and the second rotating sleeve 232 can have at least one groove on its surface, allowing the operator to insert their finger into the groove and rotate either 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 aligned. At this time, the switching element 201 can be located at the second angular position, and the damping element 290 can be located at the second position. Thus, during the reset operation, the operator can determine whether the operation is complete by checking whether the grooves of the first rotating sleeve 211 and the second rotating sleeve 232 are aligned.

[0113] With this configuration, when the switching member 201 is in the first angular position, the switching member 201 abuts against the damping member 290 and places the damping member 290 in the first position, thereby creating rotational damping between the first rotating member 210 and the second rotating member 230. When the first rotating member 210 and / or the second rotating member 230 are rotated to move the interventional tip 103 of the interventional catheter assembly 1, the rotational damping allows the interventional tip 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 is rotated, the position and angle of the interventional tip 103 will not change. When the position and angle of the interventional tip 103 need to be reset, only an external force needs to be applied to the switching member 201 to move the switching member 201 away from the first angular position, that is, to rotate the switching member 201 from the first angular position to the second angular position by a certain angle. At this time, the damping between the first rotating member 210 and the second rotating member 230 is insufficient to restrict the reset of the interventional catheter assembly 1 under its own elastic force, and the interventional catheter assembly 1 can achieve a reset with controllable deformation speed. On this basis, the switching member 201 is rotated to the second angular position. At this time, the damping member 290 is in the second position, the rotational damping between the first rotating member 210 and the second rotating member 230 is released, and the interventional tip 103 can be reset naturally. At this time, the reset speed of the interventional catheter assembly 1 is relatively fast. When using this type of operating handle assembly 2, locking and unlocking the position and angle of the interventional tip 103 is very convenient. No additional operation is required to lock the position and angle of the interventional tip 103. To unlock, simply rotate the switching element 201 to move it away from the first angle position, and the interventional catheter assembly 1 can be reset. Rotating the switching element 201 to the second angle position allows the interventional tip 103 to quickly reset, essentially achieving one-button unlocking. The locking and unlocking operations of this type of operating handle assembly 2 are simpler, resulting in a better user experience.

[0114] See also Figure 25 and Figure 26The main body 20 may also be provided with a first reset member 270. The first reset member 270 can be connected to the switching member 201 and apply a force to the switching member 201 to maintain it in a first angular position. The first reset member 270 can be connected to any suitable position on the main body 20 as needed; for example, it can be connected to the shaft 24, the grip 23, or the end cap 25. The first reset member 270 can be connected to the switching member 201 to apply a force to it. See also... Figure 25 The switching element 201 may have a winding element 2013, and the first reset element 270 can be connected to the switching element 201 by winding around the winding element 2013. Of course, the first reset element 270 can be a torsion spring or other suitable forms. Depending on the form of the first reset element 270, it can be connected to the main body 20 and the switching element 201 in various suitable ways. The force applied by the first reset element 270 to the switching element 201 can cause the switching element 201 to rotate or have a tendency to rotate. When the operating handle assembly 2 is not subjected to external force, the first reset element 270 can rotate the switching element 201 from the second angle position to the first angle position, and can continuously apply a force from the second angle position to the first angle position to keep the switching element 201 in the first angle position. It is understood that the force from the second angle position to the first angle position can be directed around the axis CC of the main body 20, and its form can be similar to torque.

[0115] When in use, the switching member 201, under the action of the first reset member 270, is held at a first angular position in its natural state. At this time, the damping member 290 is in the first position, and the damping member 290 and the first rotating member 210 are pressed together. There is 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 interventional tip 103 of the interventional catheter assembly 1 through the first control wire 131, and rotating the second rotating member 230 can control the movement of the interventional tip 103 through the second control wire 132. It is understood that the external force applied around the axis CC 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. Thus, after the interventional tip 103 reaches the predetermined position at a predetermined angle, the external force is removed. Under the action of rotational damping, the first rotating member 210 and the second rotating member 230 will remain in the position before the external force was removed and will not rotate. Thus, the position locking of the interventional tip 103 is achieved through rotational damping. Since the damping member 290 remains in the first position when the switching member 201 is in the first angular position, the rotational damping between the first rotating member 210 and the second rotating member 230 is always present, and locking can be achieved at any time simply by removing the external force. When it is necessary to unlock the position of the intervention head 103, an external force can be applied to the switching member 201 around the axis CC of the main body 20, causing the switching member 201 to rotate from the first angular position to the second angular position. This external force needs to be greater than the force exerted by the first reset member 270 on the switching member 201. For example, the first reset member 270 in the form of a torsion spring continuously applies a force to the switching member 201 to keep it in the first angular position. An external force can be applied to overcome the force exerted by the first reset member 270 on the switching member 201, causing the switching member 201 to rotate from the first angular position to the second angular position. At this time, the external force can be directed from the first angular position around the axis CC of the main body 20 to the second angular position. When the switching element 201 is in the second angle position, and the damping element 290 is in the second position, the damping element 290 is no longer pressed against the first rotating element 210, and the rotational damping between the first rotating element 210 and the second rotating element 230 is released. Due to deformation, the interventional catheter assembly 1 generates elastic force. Since there is no rotational damping between the first rotating element 210 and the second rotating element 230, it is impossible to constrain the interventional catheter assembly 1 through the first control wire 131 and the second control wire 132. Therefore, the interventional catheter assembly 1 can quickly reset under the elastic force generated by its own deformation, thus achieving the unlocking and reset of the interventional catheter assembly 1.

[0116] When no external force is applied to the switching member 201, it remains 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 positions the damping member 290 at the first position. This results in rotational damping between the first rotating member 210 and the second rotating member 230 under normal conditions. Thus, when the first rotating member 210 and / or the second rotating member 230 is rotated to move the interventional tip 103 of the interventional catheter assembly 1, the rotational damping allows the interventional tip 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 is rotated, the position and angle of the interventional tip 103 will not change. When the position and angle of the interventional tip 103 need to be reset, only an external force needs to be applied to the switching member 201 to rotate it to the second angular position. The rotational damping between the first rotating member 210 and the second rotating member 230 is reduced or even eliminated, and the interventional tip 103 can be reset naturally. When using this type of operating handle assembly 2, locking and unlocking the position and angle of the intervention head 103 is very convenient. No additional operation is required to lock the position and angle of the intervention head 103. To unlock, simply rotate the switching piece 201 to the second angle position, and the intervention head 103 will quickly reset, which is equivalent to one-button unlocking. The locking and unlocking operations of this type of operating handle assembly 2 are simpler, and the user experience is better.

[0117] See also Figure 2 , Figure 29 , Figure 30 and Figure 31An elastic element 240 may be provided on the main body 20. The elastic element 240 may abut between the damping element 290 and the first rotating element 210. The elastic element 240 may apply an elastic force to the damping element 290 to maintain the damping element 290 in a second position. When the damping element 290 is not subject to other constraints, such as when the switching element 201 is in the second angular position, the elastic force applied by the elastic element 240 to the damping element 290 may maintain the damping element 290 in the second position, or may move the damping element 290 from the first position to the second position. The elastic force applied by the elastic element 240 to the damping element 290 can be considered to be from the first position to the second position. The elastic element 240 may be a spring or other various forms. Taking the elastic element 240 as a spring as an example, when the switching element 201 is in the first angular position, the switching element 201 presses against the damping element 290, causing the damping element 290 to be in the first position. At this time, the spring-type elastic element 240 is in a compressed state, and the damping element 290 presses against the first rotating element 210 through the elastic element 240, which can make the rotational damping between the first rotating element 210 and the second rotating element 230 greater. When the switching element 201 is in the second angular position, the switching element 201 no longer presses against the damping element 290. Under the action of the elastic force of the elastic element 240, the damping element 290 can move from the first position to the second position more quickly. The elastic element 240 is configured such that when the switching element 201 is in the first angle position, the damping element 290 presses against the first rotating element 210 through the elastic element 240, which makes the rotational damping between the first rotating element 210 and the second rotating element 230 greater, and the position locking of the operating handle assembly 2 on the interventional head end 103 of the interventional catheter assembly 1 more stable; when the switching element 201 is in the second angle position, the damping element 290 can quickly move from the first position to the second position under the action of the elastic element 240, and the position unlocking of the operating handle assembly 2 on the interventional head end 103 is also faster.

[0118] The force applied by the first reset member 270 to the switching member 201 can be greater than the elastic force exerted by the elastic member 240 on the damping member 290. When the switching member 201 is in the first angular position, the damping member 290 is in the first position. The force applied by the first reset member 270 to the switching member 201 to keep the switching member 201 in the first angular position can be considered as having the effect of keeping the damping member 290 in the first position. Under the action of the elastic member 240, for the damping member 290 located in 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 the opposite effect of the first reset member 270 on the damping member 290. The force exerted by the first reset member 270 on the switching member 201 is greater than the elastic force exerted by the elastic member 240 on the damping member 290. This ensures that when the switching member 201 is in the first angular position, the damping member 290 can be stably located in the first position. This also ensures that the operating handle assembly 2 can lock the position of the intervention head end 103, thus improving the stability of the overall device during use.

[0119] See also Figure 2 , Figure 24 , Figure 29 and Figure 30 The elastic element 240 and the first rotating element 210 can abut against each other via a friction plate 260. A friction plate 260 can be provided between the elastic element 240 and the first rotating element 210. When the switching element 201 is in the first angular position, the damping element 290 is in the first position, and the damping element 290 abuts against the first rotating element 210 via the elastic element 240. In effect, the elastic element 240 abuts against the first rotating element 210 via the friction plate 260. The friction plate 260 increases the friction between the elastic element 240 and the first rotating element 210, thereby making the automatic locking of the intervention head end 103 in the first plane, achieved without external force, more stable. This also makes the position locking of the intervention head end 103 by the operating handle assembly 2 more stable.

[0120] See also Figure 2 , Figure 29 and Figure 30The switching member 201 may include a first mating surface 2012 extending spirally or obliquely around the axis CC of the main body 20, and the damping member 290 may include a second mating surface 291 extending spirally or obliquely around the axis CC of the main body 20. The first mating surface 2012 can abut against the second mating surface 291. Since both the first mating surface 2012 and the second mating surface 291 extend spirally or obliquely around the axis CC of the main body 20, the abutment between the first mating surface 2012 and the second mating surface 291 can convert the rotation of the switching member 201 around the axis CC of the main body 20 into movement of the damping member 290 along the direction of the axis CC of the main body 20. This allows the damping member 290 to be in a first position when the switching member 201 is in a first angular position, and in a second position when the switching member 201 is in a second angular position. The axis CC of the main body 20 has a first circumferential direction and a second circumferential direction opposite to it. For example, the first circumferential direction can be clockwise around the axis CC of the main body 20, and the second circumferential direction can be counterclockwise around the axis CC of the main body 20. The first mating surface 2012 can 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 in the direction from the second position to the first position. The first mating surface 2012 can 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 in the direction from the second position to the first position. Such an operating handle assembly 2 can be designed with the tilt direction of the first mating surface 2012 and / or the second mating surface 291 as needed, so as to realize the rotation of the switching member 201 in the first circumferential direction to rotate the switching member 201 from the first angular position to the second angular position, or to realize the rotation of the switching member 201 in the second circumferential direction to rotate the switching member 201 from the first angular position to the second angular position. In this way, the damping member 290 can move in the direction of the axis CC of the main body 20 by rotating the switching member 201 around the axis CC of the main body 20. Such first mating surfaces 2012 and second mating surfaces 291 are easy to manufacture and process, and the overall structure is also simpler.

[0121] Specifically, the first mating surface 2012 along the axis CC of the main body 20 may have a first mating end 2012a close to the first rotating member 210, and the second mating surface 291 along the axis CC 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 in the first angular position, the first mating end 2012a can abut against the second mating end 2911, so that the damping member 290 can be in the first position. When the switching member 201 is in the second angular position, the first mating end 2012a can abut against the third mating end 2912, so that the damping member 290 can be in 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 closer to the first rotating member 210 in the direction along the axis CC of the main body 20, that is, the damping member 290 is located at the first position, so that it can press against the first rotating member 210; when the first mating end 2012a abuts against the third mating end 2912, the switching member 201 can be located at the second angular position, and the damping member 290 is further away from the first rotating member 210 in the direction along the axis CC of the main body 20, so that it can disengage from the first rotating member 210 and release the rotational damping between the first rotating member 210 and the second rotating member 230, 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 element 201 is located at the first angle position and the damping element 290 is located at the first position; when the first mating end 2012a abuts against the third mating end 2912, the switching element 201 is located at the second angle position and the damping element 290 is located at the second position. When the ends are properly mated, the operator can receive clearer prompts. When the operating handle assembly 2 switches between the locked and unlocked states of the intervention head end 103, the operator can better grasp the locked or unlocked state of the operating handle assembly 2 when rotating the switching element 201 around the axis CC of the main body 20, resulting in a better user experience.

[0122] For example, the switching member 201 may include a plurality of first mating surfaces 2012, which may be arranged around the main body 20. Specifically, the plurality of first mating surfaces 2012 may be arranged around the axis CC of the main body 20. The damping member 290 may include a plurality of second mating surfaces 291 corresponding to the plurality of first mating surfaces 2012 respectively. The plurality of first mating surfaces 2012 may abut against the plurality of second mating surfaces 291 respectively, so that the contact 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 intervention head end 103 by the operating handle assembly 2 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 intervention head end 103 by the operating handle assembly 2 is also more stable. For example, multiple first mating surfaces 2012 and multiple second mating surfaces 291 are evenly distributed. A first mating surface 2012 and a second mating surface 291 can be a group. The first mating surfaces 2012 and the second mating surfaces 291 in each group have the same contact position. The superposition of these contact positions can achieve a larger contact area and a greater damping.

[0123] See also Figure 2 , Figure 25 , Figure 26 , Figure 27 and Figure 28The first rotating component 210 may include a first rotating sleeve 211 and a first connecting component 212. The first rotating sleeve 211 can be connected to the first connecting component 212, and the first connecting component 212 can be connected to the main body 20. The second rotating component 230 may include a second rotating sleeve 232 and a second connecting component 233. The second rotating sleeve 232 can be connected to the second connecting component 233, and the second connecting component 233 can be connected to the main body 20. The main body 20 may also be provided with a winding assembly 250, which is located between the first connecting component 212 and the second connecting component 233. When the switching component 201 is in the first angle position, the damping component 290 is in the first position. At this time, the damping component 290 can abut against the first connecting component 212 so that the first connecting component 212, the winding assembly 250, and the second connecting component 233 can form rotational damping between them. At least a portion of both the first control wire 131 and the second control wire 132 can be wound on the winding assembly 250. Taking the damping element 290, the first connecting element 212, the winding assembly 250, and the second connecting element 233 arranged in sequence as an example, when the switching element 201 is in the first angular position, the damping element 290 can be in the first position. At this time, the damping element 290, the first connecting element 212, the winding assembly 250, and the second connecting element 233 can abut in sequence, that is, the damping element 290, the first rotating element 210, the winding assembly 250, and the second rotating element 230 can abut in sequence, so that the first rotating element 210 and the second rotating element 230 can form rotational damping between each other. The winding assembly 250 can change the extension direction of the first control wire 131 and the second control wire 132. The first control wire 131 and the second control wire 132, extending around the axis CC of the main body 20, can enter the interior of the winding assembly 250 through an opening on the sidewall of the winding assembly 250. Guided by the steering column 251 inside the winding assembly 250, the first control wire 131 and the second control wire 132, which originally extended around the axis CC of the main body 20, can be redirected to extend along the direction of the axis CC of the main body 20, thereby extending axially along the interventional catheter assembly 1 to the interventional head end 103. The arrangement of the winding assembly 250 facilitates the movement of the interventional head end 103 by the rotation of the first rotating member 210 and the second rotating member 230 around the axis CC of the main body 20. Moreover, the arrangement of the winding assembly 250 can prevent the first control wire 131 and the second control wire 132 in the operating handle assembly 2 from becoming entangled after the first rotating member 210 and / or the second rotating member 230 rotate.

[0124] See also Figure 2 , Figure 27 and Figure 28When the switching element 201 is in the first angular position, the first rotating element 210 and the winding assembly 250 can abut against each other through the friction plate 260. The friction plate 260 can be provided between the first rotating element 210 and the winding assembly 250. When the switching element 201 is in the first angular position and the damping element 290 is in the first position, the first rotating element 210 and the winding assembly 250 are pressed together; in fact, the first rotating element 210 abuts against the winding assembly 250 through the friction plate 260. The friction plate 260 increases the friction between the first rotating element 210 and the winding assembly 250, resulting in greater rotational damping between the first rotating element 210 and the second rotating element 230 when the switching element 201 is in the first angular position and the damping element 290 is in the first position. Therefore, the automatic locking of the intervention head end 103 without external force can be more stable.

[0125] See again Figure 2 , Figure 27 and Figure 28 When the switching element 201 is in the first angular position, the winding assembly 250 and the second rotating element 230 can abut against each other via the friction plate 260. The friction plate 260 can be provided between the winding assembly 250 and the second rotating element 230. When the switching element 201 is in the first angular position and the damping element 290 is in the first position, the winding assembly 250 and the second rotating element 230 are pressed together; in fact, the winding assembly 250 abuts against the second rotating element 230 via the friction plate 260. The friction plate 260 increases the friction between the winding assembly 250 and the second rotating element 230, resulting in greater rotational damping between them when the switching element 201 is in the first angular position and the damping element 290 is in the first position. Therefore, the automatic locking of the intervention head end 103 upon removal of external force can be more stable.

[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 it 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 from the first angular position to the second angular position about the axis CC of the main body 20, the damping member 290 moves from the first position to the second position along the direction of the axis CC of the main body 20. The rotational damping between the first rotating member 210 and the second rotating member 230 is released, so that the first rotating member 210 returns to the first initial position under the action of the second reset member 280. During the process, the interventional catheter assembly 1 will be driven to return to the initial state more quickly through the first control wire 131. When the operating handle assembly 2 is unlocked, not only does the elastic force generated by the deformation of the interventional catheter assembly 1 itself reset the interventional catheter assembly 1, but 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 it 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 from the first angular position to the second angular position about the axis CC of the main body 20, the damping member 290 moves from the first position to the second position along the direction of the axis CC of the main body 20. The rotational damping between the first rotating member 210 and the second rotating member 230 is released, so that the second rotating member 230 returns to the second initial position under the action of the third reset member. During the process, the interventional catheter assembly 1 will be driven to return to the initial state more quickly through the second control wire 132. When the operating handle assembly 2 is unlocked, not only does the elastic force generated by the deformation of the interventional catheter assembly 1 itself reset the interventional catheter assembly 1, but the second rotating member 230 can also drive the interventional catheter assembly 1 to reset under the action of the third reset member, so that the reset of the interventional catheter assembly 1 after the operating handle assembly 2 is unlocked can be faster.

[0128] See also Figure 2 , Figure 25 , Figure 26 and Figure 27The first rotating member 210 can be used to drive the interventional tip 103 to move in the first plane via the first control wire 131, and the second rotating member 230 can be used to drive the interventional tip 103 to move in the second plane via the second control wire 132. The elastic force generated by the deformation of the interventional catheter assembly 1, transmitted through the first control wire 131, acts on the first rotating member 210, and the force transmitted through the second control wire 132 to the second rotating member 230 is less than the damping force of the rotational damping. This ensures that when there is rotational damping between the first rotating member 210 and the second rotating member 230, the interventional catheter assembly 1 will not reset under its own elastic force, thereby ensuring the stability of the operating handle assembly 2 when locking the position of the interventional tip 103.

[0129] See also Figure 24 , Figure 26 , Figure 29 and Figure 30The switching element 201 may have multiple marking portions 2014 arranged circumferentially, which can be used to indicate the angular position of the switching element 201 to the operator. The main body 20 may have a prompting position (position P in the figure), which can be a groove, a dot, a protrusion, or other various forms. The multiple marking portions 2014 can be designed in various different forms. Based on the relative positional relationship between the multiple marking portions 2014 and the prompting position P, the angular position of the switching element 201 can be indicated to the operator, thereby determining the magnitude of the rotational damping between the first rotating element 210 and the second rotating element 230. The multiple marking portions 2014 may also have the same form; the number of marking portions 2014 located on both sides of the prompting position P can also indicate the angular position of the switching element 201 to the operator. For example, the marking portion 2014 can be a long, narrow groove, or a dot, a protrusion, or other various forms; such a marking portion 2014 can have an anti-slip function. The indicator position P on the main body 20 can be the position where the operator's thumb rests when holding the device. Of course, the indicator position P can also be set at any suitable position on the main body 20. The arrangement of multiple indicator parts 2014 can indicate the angular position of the switching element 201 to the operator, thereby facilitating the operator's judgment of the rotational damping between the first rotating element 210 and the second rotating element 230. Furthermore, the multiple indicator parts 2014 facilitate the operator's rotation of the switching element 201, making the operating handle assembly 2 more convenient to use. It should be noted that there can be gaps between the multiple indicator parts 2014. Therefore, when the operator rotates the switching element 201, the indicator position P may correspond to at least a portion of the multiple indicator parts 2014 (e.g., located on the same axis), or it may not correspond to any of the multiple indicator parts 2014. That is, the indicator position P corresponds to the gap between the indicator parts 2014, in which case there can be a certain angular deviation from the indicator parts 2014.

[0130] See also Figure 2 , Figure 24 , Figure 26 , Figure 29 and Figure 30The switching member 201 is rotatable about the axis CC of the main body 20 within a first rotational range between the first and second angular positions and within a second rotational range adjacent to the first rotational range. Both the first and second rotational ranges can be a rotational range of the switching member 201. The second rotational range being adjacent to the first rotational range means that the second rotational range is located outside the first rotational range. The second rotational range can be adjacent to the first angular position. When the switching member 201 rotates from the second angular position to the first angular position, it actually rotates within the first rotational range. 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. The first connecting member 212 then gradually presses against the second connecting member 233, thereby gradually increasing the resistance to rotation between the first rotating member 210 and the second rotating member 230. In other words, within the first rotational range, 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 rotation between the first rotating member 210 and the second rotating member 230.

[0131] The multiple markings 2014 may include multiple different first markings 2014a and multiple identical second markings 2014b. When the switch 201 rotates, the indication position P on the main body 20 can be considered stationary. When the switch 201 is located within the first rotation range, at least a portion of the multiple first markings 2014a can correspond to the indication position P on the main body 20. Since the multiple first markings 2014a are different, the angular position of the switch 201 can be determined based on the form of the first markings 2014a corresponding to the indication position P. For example, the first markings 2014a can have different lengths along the axial direction of the main body 20. The switch 201 at different angular positions will cause different first markings 2014a to correspond to the indication position P, thereby providing an indication of the angular position of the switch 201. After the switching member 201 rotates to the first angular position, rotational damping is formed between the first rotating member 210 and the second rotating member 230. This rotational damping is equivalent to a relatively large resistance to the mutual rotation between the first rotating member 210 and the second rotating member 230. Subsequently, the switching member 201 continues to rotate, and it 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 in the second rotation range, the damping member 290 can be located in the position range corresponding to the first position. As the switching element 201 continues to rotate away from the first angular position within the second rotation range, the damping element 290 is located within the position range corresponding to the first position. Driven by the switching element 201, the damping element 290 continues to press against the first rotating element 210, thereby further increasing the rotational damping between the first rotating element 210 and the second rotating element 230. This further prevents creep and rebound of the interventional catheter assembly 1. When the switching element 201 is located within the second rotation range, the second indicator 2014b can correspond to the indication position P on the main body 20. Since the damping element 290 is located in the first position when the switching element 201 is located within the second rotation range, there is already sufficient rotational damping between the first rotating element 210 and the second rotating element 230 to lock the interventional tip 103. Multiple identical second indicator 2014b can be identical to each other, and multiple identical second indicator 2014b only need to indicate the range of the second rotation range of the switching element 201 to the operator. When the switching element 201 is located in the first rotation range, the surface of the switching element 201 that abuts against the damping element 290 can be spirally or obliquely extended around the axis of the main body 20. When the switching element 201 is located in the second rotation range, the surface of the switching element 201 that abuts against the damping element 290 can be perpendicular to the axis of the main body 20.The arrangement of multiple different first markings 2014a and multiple identical second markings 2014b can more clearly indicate the angle position of the switch 201 to the operator, making it more convenient for the operator to use the operating handle assembly 2.

[0132] According to another aspect of the present invention, an ultrasound imaging system is provided, see below. Figure 1 The ultrasound imaging system includes an ultrasound host 5, a female connector 4, and the ultrasound imaging device as described above. The ultrasound imaging device may also include a connector assembly 3. The connector assembly 3 can be connected to a second handle end 22 of the operating handle assembly 2, which is positioned relative 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 sequentially along an axis. The end of the connector assembly 3 furthest from the operating handle assembly 2 may have a mating joint 330. The ultrasound transducer 12 can be connected to the mating joint 330 via a wire 124. The mating joint 330 is connected to the female connector 4, which is connected to the ultrasound host 5 via a transmission cable 6. One end of the wire 124 is connected to a connection end 123, and the other end is connected to the mating joint 330, thereby connecting to the ultrasound host 5 via the connector assembly 3 to achieve signal communication between the ultrasound transducer 12 and the ultrasound host 5. The ultrasound host 5 can thus control the ultrasound transducer 12 to transmit and receive ultrasound signals.

[0133] Specifically, participate Figures 1 to 36 During use, the ultrasound imaging system inserts the interventional catheter assembly 1 into the organ to be examined. The ultrasound transducer 12's working end face 121 emits and receives ultrasound signals. The received signals are transmitted to the wire 124. Since the connector assembly 3 is connected to the female connector 4 via the mating joint 330, the signal passes through the connector assembly 3 and the female connector 4 to the transmission cable 6, and is finally transmitted to the ultrasound host 5, where the ultrasound image is displayed on the monitor 50. By adjusting the operating handle assembly 2, the interventional tip 103 of the interventional catheter assembly 1 is bent, changing the signal received by the ultrasound working end face 121, thereby changing the ultrasound image displayed on the monitor 50.

[0134] Since the ultrasound imaging device described above has the aforementioned beneficial effects, the ultrasound imaging system including the ultrasound imaging device described above also has the aforementioned beneficial effects, which will not be elaborated further here. The interventional catheter assembly 1, operating handle assembly 2, and connector assembly 3 of the ultrasound imaging system of the present invention are connected sequentially, ensuring the operability of the ultrasound imaging device. Furthermore, based on the connector 330, the ultrasound imaging device can be installed and disassembled as a disposable product via the connector assembly 3, meeting the aseptic conditions required for surgical procedures using the ultrasound imaging system.

[0135] See also Figures 32 to 36The connector assembly 3 may include a male housing 31 and a wire connecting tube 32. The wire connecting tube 32 can be connected to the male housing 31 and can be sleeved on the outside of the wire 124. The male housing 31 may have a male mating surface 310 and a side surface. The mating joint 330 protrudes outward from the male mating surface 310 in the mating direction, and a locking groove 321 may be provided on the side surface. The connector assembly 3 is used to mate with the female connector 4. When the connector assembly 3 mates with the female connector 4, the locking part 482 of the female connector 4 can cooperate with the locking groove 321. The position of the locking part 482 when it mates with the locking groove 321 is the locking position. Such a connector assembly 3 has a simple structure, is easy to mate with the female connector 4, and after mating with the female connector 4, the mating can be more stable due to the cooperation of the locking part 482 and the locking groove 321.

[0136] The side surface is also provided with anti-slip texture 322. The male housing 31 can be any shape that is easy to grip, and the anti-slip texture 322 can be set at a suitable position on the side of the male housing 31. The anti-slip texture 322 makes the mating of the connector assembly 3 and the female connector 4 easier.

[0137] See also 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 part 490. The female housing 40 may have an internally formed receiving cavity 410, within which at least a portion of the rigid locking member 480 and the operating part 490 may be accommodated. The female housing 40 can be designed in any form as needed. Preferably, the female housing 40 can be any form that facilitates gripping. Preferably, the width of the female housing 40 can be matched to the size of a human hand for easy gripping. (See also...) Figure 35 and Figure 40The female connector 4 may be provided with a mating seat 450 for mating with the connector assembly 3, and the mating seat 450 may be provided with a connecting end seat 451. When the female connector 4 mates with the connector assembly 3, a person can hold the female housing 40 by hand to mate the female connector 4 with the connector assembly 3. The mating seat 450 may be asymmetrically arranged within the receiving cavity 410. For example, the long axis of the mating seat 450 is parallel to and spaced from the axis of symmetry of the receiving cavity 410. For example, the mating seat 450 is located off the axis of symmetry of the receiving cavity 410 and close to the rigid locking member 480. Due to this asymmetrical arrangement, if the direction is reversed, the connector assembly 3 and the female connector 4 cannot mate smoothly, prompting the user to insert in the opposite direction. This serves as a foolproof method, preventing the connector assembly 3 and the female connector 4 from being misaligned and thus failing to achieve signal transmission. The mating seat 450 may be elongated, and the long axis of the mating seat 450 may be a line connecting the midpoint of one short side of the mating seat 450 to the midpoint of the other short side.

[0138] The rigid locking member 480 may have a locking body 481 located within the receiving cavity 410 and a locking portion 482 extending out of the receiving cavity 410. The rigid locking member 480 refers to a member with a certain rigidity, which does not undergo significant deformation under normal external force. Thus, when any part of the rigid locking member 480 moves under external force, the other parts of the rigid locking member 480 will move accordingly. Since the locking portion 482 needs to engage with the outside for locking, the housing 40 may have a suitable opening 4412 to allow the locking portion 482 to extend out of the receiving cavity 410.

[0139] The operating part 490 may have a transmission end 491 located within the receiving cavity 410 and abutting against the locking body 481, and an operating end 492 located outside the receiving cavity 410. The transmission end 491 may have an end face that easily abuts against and drives the locking body 481 to move. For example, the transmission end 491 may have a planar end face, and the portion of the locking body 481 that abuts against the transmission end 491 may also be planar. The transmission end 491 should be able to stably abut against the locking body 481 and drive the locking body 481 to move. This application does not limit the specific form of the transmission end 491 and the locking body 481. Similarly, the housing 40 may have a suitable opening 4412 so that the operating end 492 can be located outside the receiving cavity 410. In this case, the operating part 490 may pass through the opening 4412, which will be described in detail below. The operating end 492 is located outside the receiving cavity 410. Such an operating end 492 can facilitate operation. Preferably, the operating end 492 located outside the receiving cavity 410 can have an appropriate size.

[0140] When a force is applied to the operating end 492, the transmission end 491 can drive the locking part 482 to move between the locked position and the unlocked position. The operating part 490 can also be rigid. When an external force is applied to the operating end 492, the force can be transmitted to the transmission end 491, thus driving the locking body 481 to move through the transmission 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, allowing it to move between the locked position and the unlocked position. Here, the locked position refers to the position where the locking part 482 is engaged with an external component to form a lock, and the unlocked position refers to the position where the engagement between the locking part 482 and the external component is released, preventing a lock from forming.

[0141] For example, the operating part 490 can be cylindrical, and the transmission end 491 can abut against the middle region of the locking body 481. When an external force is applied to the operating end 492 to make the operating part 490 move downward, the transmission end 491 will also move downward. At this time, the transmission end 491 drives the locking body 481 to move downward, and the locking part 482 will move in a corresponding manner to the locking body 481, that is, the locking part 482 will also move downward. When an external force is applied to the operating end 492 to make the operating part 490 move upward, the transmission end 491 will also move upward. At this time, the transmission end 491 drives the locking body 481 to move upward, and the locking part 482 will move in a corresponding manner to the locking body 481, that is, the locking part 482 will also move upward. Based on this, the connector assembly 3 can be provided with a downward-facing groove with an opening 4412. The locking part 482 can be in the form of a latch. When the connector assembly 3 is mated 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 locked position, and the mating of the connector assembly 3 and the female connector 4 is locked, thus the mating of the connector assembly 3 and the female connector 4 has better stability. Then, a downward external force is applied to the operating part 490, and the transmission end 491 will drive the locking part 482 to move downward, and the locking part 482 will leave the groove, that is, the locking part 482 will leave the locked position, and the mating of the connector assembly 3 and the female connector 4 will be unlocked. When the connector assembly 3 and the female connector 4 need to be mated again, the locking part 482 can be first placed in the unlocked position, and then an upward external force can be applied to the operating end 492 of the operating part 490. The transmission end 491 will drive the locking part 482 to move upward, and the locking part 482 can be inserted into the groove mentioned above. At this time, the mating between the connector assembly 3 and the female connector 4 can be locked. Of course, it is understandable that the connector assembly 3 mentioned here is provided with a groove. When the locking part 482 is in the groove, it is in the locked position, and when it is in the groove, it is in the unlocked position. This is just an example. The locking position and unlocked position of the locking part 482 can also be in various other forms, which will not be elaborated here.

[0142] With this configuration, applying force to the operating end 492 can move the locking part 482 between the locked and unlocked positions. When the locking part 482 is in the locked position, it can lock the mating between the female connector 4 and the connector assembly 3, making the mating more stable and less prone to detachment. Moreover, the rigid locking part 480 has a certain rigidity, unlike locking using structural elasticity. Even after multiple insertions and removals between the female connector 4 and the connector assembly 3, the locking effect of the locking part 482 in the locked position remains excellent. In addition, with this female connector 4, only applying force to the operating end 492 is needed to move the locking part 482 between the locked and unlocked positions, making the operation very simple. Switching between the locked and unlocked states when the female connector 4 and the connector assembly 3 are mated is also much simpler.

[0143] See also 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 of the transmission end 491 that abuts against the locking body 481 can be eccentrically set 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 accordingly around the positioning pin 420. 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 allows the locking part 482 to move between the locking position and the unlocking position by rotating relative to the positioning pin 420. This saves space and makes the overall structure more compact. Such a female connector 4 is more suitable for use in ultrasonic catheter equipment.

[0144] The locking body 481 may include an abutment portion 4811, and a transmission end 491 may abut against the abutment portion 4811. The abutment portion 4811 may be the portion of the transmission end 491 that abuts against the locking body 481. The abutment portion 4811 may be eccentric to the positioning pin 420. When both the abutment 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. The transmission end 491 will drive the abutment portion 4811 to rotate around the positioning pin 420. Since both the abutment portion 4811 and the locking portion 482 are located on the same side of the positioning pin 420, the locking portion 482 will rotate in the same direction as the abutment portion 4811 around the positioning pin 420. For example, both the locking portion 482 and the abutment portion 4811 may rotate clockwise or counterclockwise around the positioning pin 420. On the rigid locking member 480, the abutment portion 4811 and the locking portion 482 are located on the same side of the positioning pin 420. The fixing part 482 can be located on both sides of the positioning pin 420. Force is applied to the operating end 492, and the transmission end 491 drives the abutment part 4811 to rotate around the positioning pin 420. Since the abutment part 4811 and the locking part 482 are located on both sides of the positioning pin 420, the locking part 482 will rotate in the opposite direction to the abutment part 4811 around the positioning pin 420. For example, the abutment part 4811 rotates clockwise around the positioning pin 420 while the locking part 482 rotates counterclockwise, or the abutment part 4811 rotates counterclockwise around the positioning pin 420 while the locking part 482 rotates clockwise. Preferably, the abutment part 4811 and the locking part 482 can be located on both sides of the positioning pin 420, which further saves space, making the structure of the female connector 4 more compact and more suitable in size when applied to ultrasonic catheter devices.

[0145] A torque element 421 may be provided on the positioning pin 420. The torque element 421 may be a torsion spring or other various forms of torque element 421. The torque element 421 may be connected to the rigid locking element 480 and may apply a force to the rigid locking element 480 to keep the locking part 482 in the locked position. When the force is applied to the operating end 492, causing the locking part 482 to rotate around the positioning pin 420 and leave the locked position, the docking between 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 between the female connector 4 and the connector assembly 3 is released, the locking part 482 will return to the locked position under the action of the torque element 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 needs to be docked with the connector assembly 3 again, a force can be applied to the operating end 492, causing the locking part 482 to rotate around the positioning pin 420 and leave the locked position. At this time, the female connector 4 can dock with the connector assembly 3. After docking, the force can be removed, and the locking part 482 will reach the locked position under the action of the torque member 421, completing the locking of the female connector 4 with the connector assembly 3. In fact, the torque member 421 can be considered to have a reset function for the locking part 482 in the locked position. The setting of the torque member 421 makes the locking part 482 in the locked position more stable, which makes the docking of the female connector 4 with the connector assembly 3 more stable. Moreover, with the torque member 421, only the operating end 492 needs to be applied when the locking part 482 leaves the locked position, making the operation of the female connector 4 simpler.

[0146] See Figure 37 and Figure 38 The mother housing 40 may include an upper housing 430 and a lower housing (not shown in the figure). A mating seat 450 may be disposed on the lower housing. The upper housing 430 and the lower housing may be connected together by various means such as snap-fit ​​or threaded connection. A positioning seat 440 may be disposed on the upper housing 430, and a positioning pin 420 may be disposed on the positioning seat 440. The positioning seat 440 can serve as a support for the positioning pin 420, and the positioning seat 440 can be designed in any form as needed. The positioning seat 440 can provide more stable support for the positioning pin 420. The placement of the positioning seat 440 can make the position of the positioning pin 420 more stable, thereby improving the overall stability of the device.

[0147] An opening 4412 may be provided on the positioning base 440. The opening 4412 may extend into the positioning base 440 to form a positioning groove 441. The positioning pin 420 may pass through the positioning groove 441 and slide within the positioning groove 441. The positioning groove 441 can be connected from the inside of the positioning base 440 to the outside of the positioning base 440 through the opening 4412. In this way, when the positioning pin 420 is installed on the positioning base 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 simplifying the overall structure of the device.

[0148] Preferably, a positioning part 4411 may be provided at the end of the positioning groove 441 away from the opening 4412. The positioning part 4411 may be an arc-shaped segment formed by the end of the positioning groove 441 away from the opening 4412 extending obliquely towards the lower housing. The positioning pin 420 enters the positioning groove 441 through the opening 4412 and slides into the positioning part 4411 within the positioning groove 441. After sliding, it will be held in the positioning part 4411 by its own weight. The provision of the positioning part 4411 makes the positioning pin 420 more stable within the positioning groove 441, thereby improving the overall stability of the device. Moreover, it is simpler and more convenient to install the positioning pin 420 into such a positioning groove 441.

[0149] See details Figure 38 The mother housing 40 may include an upper housing 430, which may have a connecting port 431. The operating part 490 can pass through the upper housing 430 through the connecting port 431. The operating part 490 can be inserted through the connecting port 431, which can be designed in any form as needed. The operating part 490 can move up and down relative to the connecting port 431. Preferably, the size of the opening 4412 of the connecting port 431 can match the size of the operating part 490, thus preventing the cavity 410 from being contaminated by the external environment. With the operating part 490 passing through the upper housing 430 via the connecting port 431, the overall device structure is simpler and easier to implement.

[0150] See details Figure 38The outer surface of the upper housing 430 can be recessed towards the receiving cavity 410 to form a placement cavity 432. An operating end 492 can be connected to a button 4921, at least a portion of which can be located within the placement cavity 432. Force can be applied to the button 4921, thereby applying force to the operating end 492. The button 4921 simplifies the application of force to the operating end 492. When force is applied to the button 4921, the button 4921 will move. However, regardless of how the button 4921 moves, at least a portion of it can remain within the placement cavity 432. For example, even when the button 4921 is at its highest point relative to the upper housing 430, its lower edge remains within the placement cavity 432. This design prevents the button 4921 of the female connector 4 from catching on external objects. For instance, when the female connector 4 is stored in a sterile bag, the button 4921 will not snag on the bag, making it easier to place the female connector 4 into the sterile bag.

[0151] See Figure 39B A limiting part 493 may be provided on the operating part 490. The edge of the connecting opening 431 can limit the limiting part 493, so that the limiting part 493 can be kept within the receiving cavity 410. The limiting part 493 may be square plate-shaped, circular plate-shaped, or other various forms, and the limiting part 493 may be unable to pass through the connecting opening 431. The provision of the limiting part 493 can make it difficult for the operating part 490 to fall out of the receiving cavity 410. For example, an inner mounting cavity 432 may be recessed on the inner side wall of the upper housing 430 towards the outer side wall. When the operating part 490 is located at the top relative to the upper housing 430, the limiting part 493 can be located in the inner mounting cavity 432, which can save space in the receiving cavity 410 and make the overall structure of the device more compact.

[0152] See also Figure 32 , Figure 36 and Figure 40 A mating seat 450 can be provided within the accommodating cavity 410, and a connecting end 451 can be provided on the mating seat 450. The female housing 40 can have a connecting port 460, through which the connecting end 451 can communicate with the outside. Because of the connecting port 460, the mating seat 450 can be located within the accommodating cavity 410, and the connecting port 460 can have a form that matches the size of the connecting end 451. Therefore, the mating seat 450, located within the accommodating cavity 410, can be protected from contamination by the external environment. When the connector assembly 3 mates with the female connector 4, the connecting terminal 331 can be inserted into the connecting end 451.

[0153] When the locking part 482 moves into the locking groove 321, it can be in the locked position; when the locking part 482 moves out of the locking groove 321, it can be in the unlocked position. When the locking part 482 is in the locked position, the connector assembly 3 and the female connector 4 are mated in the mating direction, and the connecting terminal 331 can be connected to the connecting end seat 451. When using such a connector assembly 3, if the female connector 4 needs to be mated with the connector assembly 3, a force can be applied to the operating end 492, and the transmission end 491 will drive the locking part 482 to move. At this time, the connector assembly 3 can be mated with the female connector 4. Specifically, the locking part 482 is kept in the unlocked position, and the male mating surface 310 of the connector assembly 3 is brought closer to the female connector 4 in the mating direction, thereby connecting the connecting terminal 331 to the connecting end seat 451. Then, the force on the operating end 492 is removed, and the locking part 482 will reach the locking position under the action of the torque member 421; or the opposite force can be applied to the operating end 492 so that the locking part 482 can reach the locking position. The locking part 482 that reaches the locking position will cooperate with the locking groove 321. For example, for the locking part 482 of the latch type, the locking part 482 will be locked in the locking groove 321 to lock the docking of the connector assembly 3 and the female connector 4, so that the docking of the connector assembly 3 and the female connector 4 is more stable. Such a connector assembly 3 allows for a more stable mating between the connector assembly 3 and the female connector 4. Furthermore, due to the rigidity of the rigid locking member 480, the movement of the locking part 482 between the locked and unlocked positions is achieved through force, rather than relying on the elasticity of the material or structure itself. Therefore, even after multiple insertions and removals between the connector assembly 3 and the female connector 4, and with the locking part 482 repeatedly switching between the locked and unlocked positions, the locking effect of the locking part 482 and the locking groove 321 on the mating between the connector assembly 3 and the female connector 4 will not be affected. It is worth noting that the locking part 482 engages with the locking groove 321 in the form of a latch. When the latch-type locking part 482 moves into the locking groove 321, it is in the locked position. This locking part 482 and locking groove 321 are only examples; in other embodiments not shown, the locking part 482 and locking groove 321 can also be various other forms.

[0154] Specifically, the connecting terminal 331 can be a gold finger. The end of the gold finger away from the male mating surface 310 can have a notch. There can be a gap between the notch and the axis of symmetry of the gold finger. A positioning strip can be provided inside the connecting end cap 451. When the connecting terminal 331 is connected to the connecting end cap 451, the positioning strip can be inserted into the notch. The notch can be a long strip notch, a triangular notch, or any other shape. The gap between the notch and the axis of symmetry of the gold finger means that rotating the gold finger 180° will place the notch on either the left or right side of the gold finger. The notch design allows the gold finger to have an asymmetrical structure. The positioning strip can correspond to the notch. When the connecting terminal 331 is connected to the connecting end cap 451, the positioning strip can be inserted into the notch. However, if the connector assembly 3 is inserted in the wrong direction when mating with the female connector 4, the positioning strip will not be able to be inserted into the notch. This connector assembly 3 has a foolproof design, which can prevent signal transmission failure caused by incorrect insertion when mating with the female connector 4.

[0155] See Figure 32 The male mating surface 310 can protrude along the mating direction to form a guide portion 311. The guide portion 311 can have a mating guide surface 3111 and a side guide surface 3112. The mating guide surface 3111 can extend outward in the mating direction to form a mating head 330. A locking groove 321 can be provided on the side guide surface 3112. The guide portion 311 can guide the mating direction, making it easier and more convenient for the connector assembly 3 to mate with the female connector 4. Moreover, the guide portion 311 can be designed with an asymmetrical structure. For example, the long axis of the mating head 330 is parallel to and spaced apart from the axis of symmetry of the guide portion 311. Specifically, the mating head 330 is not provided on the axis of symmetry of the guide portion 311, but is provided at a position offset from the axis of symmetry and close to the locking groove 321. Further, the guide portion 311 is composed of two parts: a side close to the locking groove 321 and a side away from the locking groove 321. The mating head 330 is provided at the mating position of these two parts, with the height of the side close to the locking groove 321 being less than the height of the side away from the locking groove 321. If the connector assembly 3 is inserted in the wrong direction, the female connector 4 will not be able to mate smoothly. This prompts the user to insert it in the wrong direction, thus preventing mistaken insertion and ensuring signal transmission is achieved. The mating connector 330 can be flat and elongated, and its long axis can be the line connecting the midpoint of one short side to the midpoint of the other short side.

[0156] See also Figure 32 and Figure 36The female housing 40 may have a female mating surface 470. The female mating surface 470 may be recessed towards the receiving cavity 410 along the mating direction to form a guide groove 471. The connection port 460 may be formed at the bottom of the guide groove 471. When the connector assembly 3 mates with the female connector 4, the connection terminal 331 may pass through the connection port 460 to connect to the connection end seat 451, and the female mating surface 470 may fit against the male mating surface 310. In this way, after the connection terminal 331 is inserted into the connection port 460, the whole assembly will be protected by the guide groove 471 to avoid external contamination and damage. A guide portion 311 is formed on the male mating surface 310. The guide portion 311 can be in a form that matches the guide groove 471. When the connector assembly 3 mates with the female connector 4, the connecting terminal 331 is inserted into the connecting end seat 451, and the guide portion 311 can also be inserted into the guide groove 471. Preferably, when the connector assembly 3 mates with the female connector 4, the female mating surface 470 can fit against the male mating surface 310, and the mating guide surface 3111 can fit against the bottom of the guide groove 471. This improves the stability of the connector assembly 3 when mating with the female connector 4.

[0157] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0158] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0159] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0160] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0161] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, those skilled in the art will understand that the present invention is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of the present invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic imaging device, characterized in that, It includes an interventional catheter assembly and an operating handle assembly, the operating handle assembly having a first handle end, and the interventional catheter assembly being connected to the first handle end; The operating handle assembly has a main body and a switching element. The main body has initial damping and can be switched between a first state and a second state via the switching element. When the main body is in the first state, the initial damping constrains the interventional catheter assembly to deform it from its natural shape to a specified shape. When the main body is in the second state, the initial damping releases the constraint on the interventional catheter assembly, and the interventional catheter assembly returns to its natural shape from the specified shape.

2. The ultrasonic imaging device according to claim 1, characterized in that, The interventional catheter assembly includes a tube body, an ultrasonic transducer, and a traction component. The tube body includes a support tube segment, a curved tube segment, and an interventional head end connected sequentially along an axis. The ultrasonic transducer is disposed inside the interventional head end. The traction member passes through the support tube section to connect to the main body, and passes through the curved tube section to connect the curved tube section to the end of the intervention head. The switching component is movable or rotatable relative to the main body. When the main body is in the first state, the initial damping causes the traction component to pull the supporting pipe segment and the curved pipe segment from the natural shape to the designated shape. When the main body is in the second state, the initial damping releases the constraint on the traction component, and the traction component pulls the supporting pipe segment and the curved pipe segment back from the designated shape to the natural shape.

3. The ultrasonic imaging device according to claim 2, characterized in that, The supporting pipe section is connected to the curved pipe section to form a flexible hose. The flexible hose includes a metal pipe body and an inner pipe body. The metal pipe body is sleeved on the outer wall of the inner pipe body. The outer wall 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. The traction member passes through the inner pipe body.

4. The ultrasonic imaging device according to claim 3, characterized in that, The inner tube includes a first cavity tube and a plurality of second cavities tubes. The outer periphery of the first cavity tube is recessed towards the center of the inner tube to form a plurality of recesses. The plurality of second cavities tubes correspond one-to-one with the plurality of recesses tubes and are located in their respective recesses tubes. The traction member passes through the second cavity tubes.

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

6. The ultrasonic imaging device according to claim 5, characterized in that, The outer tube 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 gradually changes from the third end to the fourth end.

7. The ultrasonic imaging device according to claim 2, characterized in that, The main body is provided with a mating component, a second rotating component, and an elastic component. The switching component, the mating component, and the second rotating component are all rotatable about the axis of the main body. The switching member is movable between a first position and a second position 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 it in the first position; when the switching member is in the first position, the mating member is connected to the switching member and can rotate synchronously with the switching member, and the mating member and the second rotating member form rotational damping between each other; when the switching member is in the second position, the switching member disengages from the mating member.

8. The ultrasonic imaging device according to claim 7, characterized in that, The switching component is provided with a limiting groove with an opening facing the mating component, and the mating component is provided with a limiting block protruding towards the switching component. When the switching component is in the first position, the limiting block is engaged in the limiting groove.

9. The ultrasonic imaging device according to claim 2, characterized in that, The main body is provided with a damping component, a first rotating component, and a second rotating component. Both the first and second rotating components are rotatable about the axis of the main body. The switching component is rotatable between a first angular position and a second angular position about the axis of the main body. The damping component is movable between a first position and a second position along the direction of the axis of the main body. The switching component abuts against the damping component. When the switching member is located at the first angular position, the damping member is located at the first position and abuts against the first rotating member so that the first rotating member and the second rotating member form rotational damping between each other. When the switching member is located at the second angular position, the damping member is located at the second position and the rotational damping is released.

10. The ultrasonic imaging device according to claim 9, characterized in that, The switching element includes a first mating surface that extends helically or obliquely about the axis of the body, and the damping element includes a second mating surface that extends helically or obliquely about the axis of the body, wherein the first mating surface abuts against the second mating surface.

11. The ultrasonic imaging device according to claim 10, characterized in that, Along the axis of the main body, the first mating surface has a first mating end close to the first rotating component, and along the axis of the main body, the second mating surface has a second mating end away from the first rotating component and a third mating end close to the first rotating component. When the switching component is located at the first angle position, the first mating end abuts against the second mating end, so that the damping component is located at the first position; When the switching element is in the second angle position, the first mating end abuts against the third mating end, so that the damping element is in the second position.

12. An ultrasound imaging system, characterized in that, The device includes an ultrasound host, a female connector, and an ultrasound imaging apparatus as described in any one of claims 1-11. The ultrasound imaging apparatus further includes a connector assembly connected to a second handle end of the operating handle assembly disposed opposite to the first handle end, such that the interventional catheter assembly, the operating handle assembly, and the connector assembly are arranged sequentially along an axis. A mating joint is formed at one end of the connector assembly away from the operating handle assembly, and the mating joint is connected to the female connector. The female connector is connected to the ultrasound host via a transmission cable.

13. The ultrasound imaging system according to claim 12, characterized in that, The connector assembly includes a male housing having a male mating surface and a side surface, the mating head protruding outward from the male mating surface in the mating direction, and a locking groove provided on the side surface.

Images