Operating handle of interventional instrument and interventional instrument

Abstract

The present application relates to an operating handle of an interventional instrument and the interventional instrument. The operating handle includes a housing, a traction wheel, a rotating shaft and a control member; a first locking tooth is arranged in the housing; the traction wheel is rotatably arranged in the housing; the rotating shaft is movably arranged in the housing, the rotating shaft can drive the traction wheel to rotate together, and the rotating shaft is provided with a second locking tooth; the control member is arranged outside the housing and connected to the rotating shaft, the control member can drive the rotating shaft to move between a braking position and an unlocking position, when the rotating shaft is in the braking position, the second locking tooth meshes with the first locking tooth to circumferentially lock the rotating shaft, and when the rotating shaft is in the unlocking position, the second locking tooth moves away from the first locking tooth to release the circumferential locking of the rotating shaft. The operating handle can stabilize the direction of the distal end of the catheter without the operator applying pressure, and has the characteristics of simple structure, stable performance and easy installation.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an operating handle of an interventional device and the interventional device. Background Art

[0002] An interventional device is a medical device that is inserted into the human body or natural cavity through surgical means for short-term treatment or examination and is removed after the treatment or examination is completed, such as endoscopes, ablation catheters and other devices.

[0003] An endoscope is an interventional device with direct vision function. It enters the human body through natural cavities or small surgical incisions, so that surgical operations can be performed under the direct vision of the endoscope. During the use of the endoscope, the operator needs to use the hand to move the control components (such as levers, dials, knobs, etc.) on the endoscope handle to control the bending amplitude of the front section of the insertion part to adjust the direction so that the lens can be aimed at the target area for observation.

[0004] However, when it is necessary to stably shoot the target area, the operator needs to keep pressing the control component to prevent the front end of the endoscope insertion portion from rebounding, which is inconvenient for the operator to operate and increases the difficulty of the operation.

[0005] The above problems also exist with other interventional devices. Summary of the invention

[0006] Based on this, it is necessary to provide an operating handle of an interventional instrument and an interventional instrument to address the above technical issues.

[0007] An operating handle of an interventional instrument, characterized by comprising:

[0008] A housing, wherein a first locking tooth is disposed in the housing;

[0009] a traction wheel, the traction wheel being rotatably disposed in the housing;

[0010] A rotating shaft, wherein the rotating shaft is movably disposed in the housing, the rotating shaft can drive the traction wheel to rotate together, and the rotating shaft is provided with a second locking tooth; and

[0011] An operating member is arranged on the outside of the shell and connected to the rotating shaft, and the operating member can drive the rotating shaft to move between a braking position and an unlocking position, wherein when the rotating shaft is in the braking position, the second locking tooth is engaged with the first locking tooth to circumferentially lock the rotating shaft, and when the rotating shaft is in the unlocking position, the second locking tooth is away from the first locking tooth to release the circumferential locking of the rotating shaft.

[0012] In one embodiment, a mounting groove is provided in the housing, and a locking wheel is provided on the rotating shaft, and when the rotating shaft is in the braking position, the locking wheel extends into the mounting groove;

[0013] Wherein, the first locking teeth are arranged in a circle on the inner surface of the mounting groove along the circumference of the rotating shaft, and the second locking teeth are arranged in a circle on the outer circumference of the locking wheel along the circumference of the rotating shaft.

[0014] In one of the embodiments, a support platform is disposed on the inner surface of the shell, and the mounting groove is disposed on the support platform.

[0015] In one embodiment, the operating handle also includes a wheel cover arranged in the outer shell, the wheel cover and the inner surface of the outer shell away from the first locking tooth form a limiting cavity, and the traction wheel is arranged in the limiting cavity and sleeved on the outside of the rotating shaft.

[0016] In one of the embodiments, a rotation guide is provided between the inner surface of the housing away from the first locking tooth and the traction wheel, and the rotation guide includes a matching guide block and a guide groove, and the guide groove is provided along the rotation direction of the rotating shaft.

[0017] In one embodiment, a circle of first limiting teeth is circumferentially arranged on the inner circumference of the traction wheel, and a circle of second limiting teeth is circumferentially arranged on the outer circumference of the rotating shaft, and the second limiting teeth are meshed with the first limiting teeth.

[0018] In one of the embodiments, a plurality of connecting ear plates are provided at intervals along the circumferential direction on the outer edge of the wheel cover, and the connecting ear plates are connected to the outer shell via screws.

[0019] In one embodiment, the outer edge of the wheel cover protrudes from the outer edge of the traction wheel, and one end of the traction wheel close to the wheel cover is configured with a reduced diameter to cooperate with the outer edge of the wheel cover to form a wire receiving groove.

[0020] In one embodiment, the control member includes a first connecting rod, a second connecting rod and a third connecting rod connected in sequence, an end of the first connecting rod away from the second connecting rod is connected to the first end of the rotating shaft, and an end of the third connecting rod away from the second connecting rod is connected to the second end of the rotating shaft, wherein the first end and the second end of the rotating shaft are arranged opposite to each other.

[0021] An interventional instrument, comprising a catheter, a traction wire and an operating handle as described in any one of the above items;

[0022] The conduit is arranged at the distal end of the housing of the operating handle;

[0023] The traction wire is inserted into the catheter, the proximal end of the traction wire is wound around the traction wheel of the operating handle, and the distal end of the traction wire is connected to the distal end of the catheter.

[0024] The operating handle and interventional instrument of the above-mentioned interventional instrument, by arranging a first locking tooth in the shell and a second locking tooth on the rotating shaft, can move the rotating shaft between the unlocking position and the braking position by pushing and pulling the operating member, so that the second locking tooth is away from the first locking tooth or engages with the first locking tooth. Therefore, when it is necessary to adjust the direction of the distal end of the catheter, the traction wheel can be driven to rotate by rotating the rotating shaft to retract and release the traction wire. When the direction of the distal end of the catheter is stabilized, the traction wheel can be prevented from rotating again under the action of the rebound force of the catheter by circumferentially locking the rotating shaft. There is no need for the operator to continue pushing and pulling the operating member, which is convenient for the operator to operate and reduces the difficulty of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the three-dimensional structure of an operating handle provided in one embodiment of the present application.

[0026] Figure 2 for Figure 1 Exploded view of the operating handle provided.

[0027] Figure 3 for Figure 1 Provided is a schematic diagram of the assembly between the rotating shaft of the operating handle, the traction wheel and the wheel cover.

[0028] Figure 4 for Figure 1 A schematic diagram of the three-dimensional structure of the traction wheel of the operating handle is provided.

[0029] Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of the first shell of the operating handle is provided.

[0030] The reference numerals in the accompanying drawings are described as follows:

[0031] 10. Operating handle; 100. Housing; 110. First locking tooth; 100a. Mounting groove; 120. Support platform; 100b. Guide groove; 100c. First functional opening; 100d. Second functional opening; 100e. Third functional opening; 100f. Fourth functional opening; 130. First shell; 140. Second shell; 200. Traction wheel; 210. Guide block; 220. First limiting tooth; 200a. Wire receiving groove; 300. Rotating shaft; 310. Second locking tooth; 320. Locking wheel; 330. Second limiting tooth; 400. Control member; 410. First connecting rod; 420. Second connecting rod; 430. Third connecting rod; 500. Wheel cover; 510. Connecting ear plate. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0038] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides an operating handle 10 , which includes: a housing 100 , a traction wheel 200 , a rotating shaft 300 and a control member 400 . Specifically, a first locking tooth 110 is provided in the housing 100; the traction wheel 200 is rotatably provided in the housing 100; the rotating shaft 300 is movably provided in the housing 100, the rotating shaft 300 can drive the traction wheel 200 to rotate together, and the rotating shaft 300 is provided with a second locking tooth 310; the operating member 400 is provided outside the housing 100 and connected to the rotating shaft 300, the operating member 400 can drive the rotating shaft 300 to move between a braking position and an unlocking position, wherein when the rotating shaft 300 is in the braking position, the second locking tooth 310 is meshed with the first locking tooth 110 to circumferentially lock the rotating shaft 300, and when the rotating shaft 300 is in the unlocking position, the second locking tooth 310 is away from the first locking tooth 110 to release the circumferential locking of the rotating shaft 300.

[0039] The operating handle 10 is applied to interventional instruments, such as endoscopes, ablation catheters and other interventional instruments, wherein the interventional instruments may include a catheter and a traction wire, the catheter may be connected to the distal end of the housing 100 of the operating handle 10, the traction wire is inserted into the catheter, the proximal end of the traction wire is wound around the traction wheel 200 of the operating handle 10, and the distal end of the traction wire is connected to the distal end of the catheter. During surgery, the traction wire can be retracted and released by rotating the traction wheel 200, and the direction of the distal end of the catheter can be adjusted to meet the operation requirements.

[0040] It should be noted that the terms “distal end” and “proximal end” throughout the text are only used to indicate relative positional relationships. The “distal end” of a component refers to the end of the component that enters the patient's body first and / or the end that is farther away from the operator during normal operation, while the “proximal end” refers to the end that enters the patient's body later and / or the end that is closer to the operator than the other end.

[0041] The following uses an endoscope as an example to explain the working process and structure of the operating handle 10 one by one.

[0042] When it is necessary to stably shoot the target area, the operator can push the operating member 400 to move the rotating shaft 300 from the unlocking position to the braking position, so that the second locking tooth 310 on the rotating shaft 300 is engaged with the first locking tooth 110 in the housing 100, and the rotating shaft 300 can be axially locked to prevent the rotating shaft 300 from rotating again, so that the traction wheel 200 cannot rotate again driven by the rotating shaft 300. The operator does not need to continue pushing the operating member 400, which can free the operator's thumb, facilitate the operator's operation, and reduce the difficulty of the operation. It should be noted that the meshing force between the second locking tooth 310 and the first locking tooth 110 is greater than the rebound force of the distal end of the catheter. Therefore, the traction wheel 200 will not reversely drive the rotating shaft 300 to rotate even under the action of the rebound force of the catheter. In addition, since there is a meshing force between the second locking tooth 310 and the first locking tooth 110, only by applying a certain force to the operating member 400 can the meshing force between the second locking tooth 310 and the first locking tooth 110 be overcome. Therefore, even if the operator misoperates, the rotating shaft 300 will not move from the braking position to the unlocking position by itself.

[0043] When the direction of the distal end of the catheter needs to be adjusted, the operator can first push and pull the control member 400 to move the shaft 300 from the braking position to the unlocking position, so that the second locking tooth 310 on the shaft 300 is away from the first locking tooth 110 in the housing, thereby releasing the axial lock of the shaft 300. Then, the control member 400 is rotated to rotate the shaft 300, and the traction wheel 200 rotates under the drive of the shaft 300, so that the traction wire can be retracted and released to a certain extent, so that the lens at the distal end of the catheter is aimed at the target area.

[0044] It can be seen that the operating handle 10 can be applied to interventional instruments, such as endoscopes. By arranging a first locking tooth 110 in the housing 100 and a second locking tooth 310 on the rotating shaft 300, the rotating shaft 300 can be moved between the unlocking position and the braking position by pushing and pulling the operating member 400, so that the second locking tooth 310 is away from the first locking tooth 110 or meshes with the first locking tooth 110. Therefore, when it is necessary to adjust the direction of the distal end of the catheter, the traction wheel 200 can be driven to rotate by rotating the rotating shaft 300 to retract and release the traction wire. When the direction of the distal end of the catheter is stabilized, the traction wheel 200 can be prevented from rotating again under the action of the rebound force of the catheter by circumferentially locking the rotating shaft 300. There is no need for the operator to continue pushing and pulling the operating member 400, which is convenient for the operator to operate and reduces the difficulty of the operation.

[0045] See also Figure 2 In some embodiments of the present application, a mounting groove 100a is provided in the housing 100, and a locking wheel 320 is provided on the rotating shaft 300. When the rotating shaft 300 is in the braking position, the locking wheel 320 extends into the mounting groove 100a; wherein, the first locking teeth 110 are provided in a circle on the inner surface of the mounting groove 100a along the circumference of the rotating shaft 300, and the second locking teeth 310 are provided in a circle on the outer circumference of the locking wheel 320 along the circumference of the rotating shaft 300. By providing a circle of the first locking teeth 110 in the mounting groove 100a of the housing 100 and a circle of the second locking teeth 310 on the locking wheel 320 of the rotating shaft 300, the meshing area between the first locking teeth 110 and the second locking teeth 310 can be increased, and the effect of circumferential locking of the rotating shaft 300 can be ensured. In addition, the second locking tooth 310 is arranged on the outer circumferential surface of the locking wheel 320 instead of on the inner circumferential surface of the locking wheel 320. In this way, the locking wheel 320 can be directly arranged into a block structure without additionally setting a groove on the locking wheel 320 to set the second locking tooth 310 on the inner circumferential surface of the locking wheel 320. This can simplify the structure of the locking wheel 320 and facilitate the processing of the locking wheel 320.

[0046] The locking wheel 320 can be disposed on the outer peripheral surface of the rotating shaft 300 by bonding, welding or integral molding.

[0047] Continue to see Figure 2 The inner surface of the housing 100 may be provided with a support platform 120, and the mounting groove 100a is provided on the support platform 120. By providing the mounting groove 100a on the support platform 120, it is not necessary to increase the overall wall thickness of the housing 100 to provide the mounting groove 100a, so that the weight of the housing 100 can be reduced, and it is convenient for the operator to hold the operating handle 10. Among them, the support platform 120 can be provided on the inner surface of the housing 100 by bonding, welding or integral molding.

[0048] In some embodiments of the present application, Figure 2 and Figure 3 As shown, the operating handle 10 further includes a wheel cover 500 disposed in the housing 100. The wheel cover 500 and the inner surface of the housing 100 away from the first locking tooth 110 are surrounded to form a limiting cavity. The traction wheel 200 is disposed in the limiting cavity and sleeved on the outside of the rotating shaft 300. When the direction of the distal end of the catheter needs to be stabilized and the rotating shaft 300 is moved from the unlocking position to the braking position, the wheel cover 500 can block the traction wheel 200 from moving toward the first locking tooth 110 on the housing 100, thereby avoiding pulling the traction wire, and further preventing the direction of the distal end of the stable catheter from changing again.

[0049] Among them, Figure 3 As shown, the outer edge of the wheel cover 500 may be provided with a plurality of connecting ear plates 510 at intervals along the circumferential direction, and the connecting ear plates 510 are connected to the outer shell 100 via threaded parts. In this way, the wheel cover 500 and the outer shell 100 are easily detachably connected. It should be noted that a through hole is provided on the connecting ear plate 510, and a threaded part (such as a screw) connects the wheel cover 500 to the outer shell 100 by penetrating the through hole. The connecting ear plate 510 can be connected to the wheel cover 500 by means of integral molding, welding, etc. The number of the connecting ear plates 510 can be set according to actual conditions. For example, it can be set to 2, 3, or 4. Figure 3 4 or more as shown.

[0050] Continue to see Figure 3 , the outer edge of the wheel cover 500 protrudes from the outer edge of the traction wheel 200, and the end of the traction wheel 200 close to the wheel cover 500 is set with a reduced diameter to cooperate with the outer edge of the wheel cover 500 to form a wire receiving groove 200a. This facilitates the setting of the wire receiving groove 200a, wherein the wire receiving groove 200a is used to accommodate the traction wire. It should be noted that the outer diameter of the end of the traction wheel 200 close to the wheel cover 500 is smaller than the outer diameter of the rest of the traction wheel 200, so that the end of the traction wheel 200 close to the wheel cover 500 is set with a reduced diameter.

[0051] In order to prevent the traction wheel 200 from being unable to rotate in a directional manner due to slight shaking in the limiting cavity, Figures 3 to 5 As shown, a rotation guide is provided between the inner surface of the housing 100 away from the first locking tooth 110 and the traction wheel 200, and the rotation guide includes a matching guide block 210 and a guide groove 100b, and the guide groove 100b is provided along the rotation direction of the rotating shaft 300. The rotation guide can guide the rotation of the traction wheel 200, so that the traction wheel 200 can move in a directional manner under the drive of the rotating shaft 300.

[0052] The guide groove 100b of the rotating guide member can be arranged on the inner surface of the housing 100, and the guide block 210 can be arranged on the end surface of the traction wheel 200; or, the guide groove 100b can be arranged on the end surface of the traction wheel 200, and the guide block 210 can be arranged on the inner surface of the housing 100. The specific position of the rotating guide member can be arranged according to specific needs.

[0053] In order to ensure that the rotating shaft 300 can drive the traction wheel 200 to rotate together with the rotating shaft 300, Figure 3 and Figure 5 As shown, the inner circumference of the traction wheel 200 is provided with a circle of first limiting teeth 220 along the circumferential direction, and the outer circumference of the rotating shaft 300 is provided with a circle of second limiting teeth 330 along the circumferential direction, and the second limiting teeth 330 are meshed with the first limiting teeth 220. Through the meshing of the second limiting teeth 330 with the first limiting teeth 220, it is ensured that the traction wheel 200 and the rotating shaft 300 rotate together, and the rotating shaft 300 can also freely pass through the traction wheel 200 under the drive of the operating member 400 to move between the unlocking position and the braking position.

[0054] In some embodiments of the present application, Figure 2 As shown, the control member 400 may include a first connecting rod 410, a second connecting rod 420 and a third connecting rod 430 connected in sequence, an end of the first connecting rod 410 away from the second connecting rod 420 is connected to the first end of the rotating shaft 300, and an end of the third connecting rod 430 away from the second connecting rod 420 is connected to the second end of the rotating shaft 300, wherein the first end and the second end of the rotating shaft 300 are arranged opposite to each other. Figure 2 The generally U-shape is shown to facilitate the operator to rotate and push and pull the control member 400 .

[0055] Among them, the end of the first connecting rod 410 away from the second connecting rod 420 can be connected to the first end of the rotating shaft 300 by a threaded member (such as a screw), and the end of the third connecting rod 430 away from the second connecting rod 420 can also be connected to the second end of the rotating shaft 300 by a threaded member (such as a screw).

[0056] In order to facilitate the disassembly and assembly of the various components inside the operating handle 10, Figure 2 As shown, the housing 100 may include a first shell 130 and a second shell 140 that are connected to each other, the wheel cover 500 is connected to the surface of the first shell 130 facing the second shell 140, and the support platform 120 is disposed on the surface of the second shell 140 facing the first shell 130. The first shell 130 and the second shell 140 may be connected by screws and / or snaps.

[0057] According to the use scenario of the interventional instrument, a plurality of functional openings can be provided on the housing 100 of the operating handle 10. For example, an endoscope used for bronchial endoscopy is used as an example. Figure 1As shown, the proximal end of the housing 100 is provided with two functional openings, namely, a first functional opening 100c and a second functional opening 100d, wherein the first functional opening 100c can be used to install a suction button, by pressing the suction button, the liquid in the patient's lungs, such as sputum, can be sucked out; and the second functional opening 100d can be used to install a photo button, by pressing the photo button, the image of the target area can be obtained. In addition, the upper side of the distal end of the housing 100 can also be provided with a third functional opening 100e, which can be used as an instrument channel, for example, through which a saline tube or clamps can be transported into the catheter; the lower side of the distal end of the housing 100 can also be provided with a fourth functional opening 100f, which can be used as a cable outlet, and the cable can transmit the image information obtained by the camera at the distal end of the catheter to a display device outside the body.

[0058] In summary, the operating handle 10 can stabilize the direction of the distal end of the catheter without the operator applying pressure, and has the characteristics of simple structure, stable performance, and easy installation.

[0059] On the other hand, other embodiments of the present application provide an interventional instrument, which may include a catheter, a traction wire and an operating handle 10 as described in any of the above items, wherein the catheter is disposed at the distal end of the housing 100 of the operating handle 10, and the traction wire is passed through the catheter, wherein the proximal end of the traction wire is wound around the traction wheel 200 of the operating handle 10, and the distal end of the traction wire is connected to the distal end of the catheter.

[0060] The interventional instrument may be an interventional instrument such as an endoscope, an ablation catheter, etc. The following uses an endoscope as an example to explain the working process of the operating handle 10 of the interventional instrument.

[0061] When it is necessary to stably shoot the target area, the operator can push the operating member 400 to move the rotating shaft 300 from the unlocking position to the braking position, so that the second locking tooth 310 on the rotating shaft 300 is engaged with the first locking tooth 110 in the housing 100, and the rotating shaft 300 can be axially locked to prevent the rotating shaft 300 from rotating again, so that the traction wheel 200 cannot rotate again driven by the rotating shaft 300. The operator does not need to continue pushing the operating member 400, which can free the operator's thumb, facilitate the operator's operation, and reduce the difficulty of the operation.

[0062] When the direction of the distal end of the catheter needs to be adjusted, the operator can first push and pull the control member 400 to move the shaft 300 from the braking position to the unlocking position, so that the second locking tooth 310 on the shaft 300 is away from the first locking tooth 110 in the housing, thereby releasing the axial lock of the shaft 300. Then, the control member 400 is rotated to rotate the shaft 300, and the traction wheel 200 rotates under the drive of the shaft 300, so that the traction wire can be retracted and released to a certain extent, so that the lens at the distal end of the catheter is aimed at the target area.

[0063] It can be seen that the interventional instrument sets a first locking tooth 110 in the shell 100 and a second locking tooth 310 on the rotating shaft 300 through the operating handle 10, and can move the rotating shaft 300 between the unlocking position and the braking position by pushing and pulling the operating member 400, so that the second locking tooth 310 is away from the first locking tooth 110 or meshes with the first locking tooth 110. Therefore, when it is necessary to adjust the direction of the distal end of the catheter, the traction wheel 200 can be driven to rotate by rotating the rotating shaft 300 to retract and release the traction wire. When the direction of the distal end of the catheter is stabilized, the traction wheel 200 can be prevented from rotating again under the action of the rebound force of the catheter by circumferentially locking the rotating shaft 300. The operator does not need to continue pushing and pulling the operating member 400, which is convenient for the operator to operate and reduces the difficulty of the operation.

[0064] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An operating handle for an interventional instrument, characterized in that: include: A housing, wherein a first locking tooth is disposed in the housing; a traction wheel rotatably disposed in the housing; A rotating shaft, the rotating shaft is movably disposed in the housing, the rotating shaft can drive the traction wheel to rotate together, and the rotating shaft is provided with a second locking tooth; as well as An operating member is arranged on the outside of the shell and connected to the rotating shaft, and the operating member can drive the rotating shaft to move between a braking position and an unlocking position, wherein when the rotating shaft is in the braking position, the second locking tooth is engaged with the first locking tooth to circumferentially lock the rotating shaft, and when the rotating shaft is in the unlocking position, the second locking tooth is away from the first locking tooth to release the circumferential locking of the rotating shaft.

2. The operating handle according to claim 1, characterized in that: The housing is provided with a mounting groove, the rotating shaft is provided with a locking wheel, and when the rotating shaft is in the braking position, the locking wheel extends into the mounting groove; Wherein, the first locking teeth are arranged in a circle on the inner surface of the mounting groove along the circumference of the rotating shaft, and the second locking teeth are arranged in a circle on the outer circumference of the locking wheel along the circumference of the rotating shaft.

3. The operating handle according to claim 2, characterized in that: The inner surface of the shell is provided with a support platform, and the mounting groove is provided on the support platform.

4. The operating handle according to claim 1, characterized in that: The operating handle also includes a wheel cover arranged in the shell, the wheel cover and the inner surface of the shell away from the first locking tooth form a limiting cavity, and the traction wheel is arranged in the limiting cavity and sleeved on the outside of the rotating shaft.

5. The operating handle according to claim 4, characterized in that: A rotation guide is arranged between the inner surface of the housing away from the first locking tooth and the traction wheel. The rotation guide comprises a matching guide block and a guide groove. The guide groove is arranged along the rotation direction of the rotating shaft.

6. The operating handle according to claim 4, characterized in that: The inner circumferential surface of the traction wheel is circumferentially provided with a circle of first limiting teeth, and the outer circumferential surface of the rotating shaft is circumferentially provided with a circle of second limiting teeth, and the second limiting teeth are meshed with the first limiting teeth.

7. The operating handle according to claim 4, characterized in that: The outer edge of the wheel cover is provided with a plurality of connecting ear plates at intervals along the circumferential direction, and the connecting ear plates are connected to the housing through screw members.

8. The operating handle according to claim 4, characterized in that: The outer edge of the wheel cover protrudes from the outer edge of the traction wheel, and one end of the traction wheel close to the wheel cover is arranged with a reduced diameter to cooperate with the outer edge of the wheel cover to form a wire accommodating groove.

9. The operating handle according to any one of claims 1 to 8, characterized in that: The control member includes a first connecting rod, a second connecting rod and a third connecting rod connected in sequence, an end of the first connecting rod away from the second connecting rod is connected to the first end of the rotating shaft, and an end of the third connecting rod away from the second connecting rod is connected to the second end of the rotating shaft, wherein the first end and the second end of the rotating shaft are arranged opposite to each other.

10. An interventional device, characterized in that: It comprises a catheter, a traction wire and an operating handle as claimed in any one of claims 1 to 9; The conduit is arranged at the distal end of the housing of the operating handle; The traction wire is inserted into the catheter, the proximal end of the traction wire is wound around the traction wheel of the operating handle, and the distal end of the traction wire is connected to the distal end of the catheter.

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