Interventional medical instrument and handle fixing device and bracket structure of interventional medical instrument
By designing handle fixing devices for support, buckle cover, axial limiting parts and rotating self-locking parts, the problems of hands fatigue and distraction caused by handle holding are solved, and the stable fixation and rotation function of the handle is achieved, which improves the operation Efficiency and safety.
Patent Information
- Application Number
- CN202420444393.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-07
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-07
AI Technical Summary
In the field of medical device intervention, the handle requires long-term handheld and operation of the surgical staff, resulting in fatigue and distraction of both hands, increasing the risk of surgery.
A handle fixing device including a support member, a buckle cover, an axial limiting member and a rotating self-locking member is designed to allow the handle to rotate circumferentially but axially fixed, and to lock the handle at a specific position by rotating self-locking member, freeing both hands to operate.
It improves surgical efficiency, reduces manpower burden, reduces surgical risks, ensures the stability and rotation function of the handle, and meets clinical needs.
Smart Images
Figure CN222237840U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical devices, and particularly relates to an interventional medical device and a handle fixing device and a bracket structure of the interventional medical device. Background Art
[0002] Medical device interventional products are basically composed of catheters and handles. In the prior art, most of the handles are operated by the operator (i.e., medical staff), and at this time, the operator also needs to use both hands to complete a series of other actions, such as: moving the handle, rotating the handle, and operating the various buttons on the handle. In other words, the operator needs to perform many other operations while holding the handle. Not only will holding the handle for a long time cause fatigue, but the operator cannot focus more on the operation of the handle, which will ultimately affect the progress of the operation and increase the risk of the operation. Therefore, it is necessary to design a handle fixing device that can free the operator's hands and allow the operator to focus more on the operation of the handle buttons. Utility Model Content
[0003] The purpose of the utility model is to provide an interventional medical device and a handle fixing device and a bracket structure for the interventional medical device, so that when the user concentrates on operating the buttons on the handle, there is no need to support or hold the handle with the hand, and the handle can be directly fixed on the device, which can not only keep the handle stable, but also free the user's hands.
[0004] In order to solve the above technical problems, the utility model provides a handle fixing device for an interventional medical device, wherein the proximal end of the interventional medical device is provided with a handle, and the handle fixing device comprises a support member, a buckle cover, an axial limit member and a rotation self-locking member;
[0005] One side of the support is rotatably connected to the buckle cover, and the buckle cover and the support are enclosed to form an installation space for accommodating the handle, and the installation space is a circumferentially closed structure, and the installation space is open at both ends in a direction perpendicular to the rotation plane of the handle;
[0006] The axial limiting member is arranged on the supporting member and / or the buckle cover, and is used to limit the axial movement of the handle and allow the handle to rotate circumferentially;
[0007] The rotating self-locking member is elastically and telescopically arranged on the supporting member and / or the buckle cover. When the handle is circumferentially rotated to a certain position, the rotating self-locking member fixes the handle.
[0008] Optionally, the rotating self-locking member includes an adjusting bolt, a spring and a locking tongue connected in sequence; the adjusting bolt is threadedly connected to the support member and acts on the spring to put the spring in a compressed state; when the handle rotates circumferentially to a certain position, the locking tongue is driven by the spring to pass through the side wall of the installation space and engage and lock with the handle.
[0009] Optionally, the locking tongue is a spherical structure.
[0010] Optionally, the support member includes a top plate and a support connected to the bottom of the top plate, one end of the buckle cover is rotatably connected to the end corresponding to the top plate via a rotating shaft, and the other end of the buckle cover is fixed to the other end corresponding to the top plate via a fixing bolt, and the top plate and the buckle cover together form the installation space.
[0011] Optionally, the top plate and the buckle cover are both U-shaped curved plates, and / or the bottom end of the support away from the top plate is provided with a slide rail.
[0012] Optionally, the axial limit member is arranged on the inner side wall of the installation space, and is partially extended or circumferentially extended along the circumference of the installation space.
[0013] Optionally, the axial limiting member is a limiting protrusion.
[0014] Based on the same inventive concept, the utility model also provides an interventional medical device, including a handle and a handle fixing device of any one of the interventional medical devices, wherein the handle is provided with an axial limiting structure cooperating with the axial limiting piece in the handle fixing device and a rotation locking structure cooperating with the rotation self-locking piece.
[0015] Optionally, the axial limiting structure is a limiting groove, the axial limiting member is a limiting protrusion, and / or the rotation locking structure is a rotation slot, and the rotation slot is provided with a plurality of engagement grooves along the rotation direction of the handle, and when the handle rotates circumferentially to a certain position, the rotating self-locking member engages and locks with a corresponding one of the engagement grooves to fix the handle.
[0016] Based on the same inventive concept, the utility model also provides a bracket structure, including a bracket and any one of the handle fixing devices described above, wherein the handle fixing device is installed on the bracket, and the handle fixing device can move relative to the bracket or remain fixed relative to the bracket.
[0017] Compared with the prior art, the interventional medical device and the handle fixing device and bracket structure of the interventional medical device provided by the utility model have the following beneficial effects:
[0018] The above handle fixing device includes: a support member, a buckle cover, an axial limit member and a rotation self-locking member; one side of the support member is rotationally connected to the buckle cover, and the buckle cover and the support member together form an installation space for accommodating the handle, and the installation space is a circumferentially closed structure, and the installation space forms openings at both ends in a direction perpendicular to the rotation plane of the handle; the axial limit member is arranged on the support member and / or the buckle cover, and is used to limit the axial movement of the handle and allow the handle to rotate circumferentially; the rotation self-locking member is elastically and telescopically arranged on the support member and / or the buckle cover, and when the handle rotates circumferentially to a certain position, the rotation self-locking member fixes the handle.
[0019] With such configuration, during the operation or in vitro simulation or testing, the handle can be fixed by the handle fixing device provided by the present application, and there is no need to manually hold the handle, thereby freeing the user's hands and allowing the user to focus more on the operation of the handle buttons, thereby improving efficiency and reducing the burden of manpower, especially reducing the risk during the operation, making the operation safer. Moreover, the handle fixing device described above does not limit the rotation function of the handle when fixing the handle, so that the user can still rotate the operating handle normally, which better meets the need to rotate the handle.
[0020] Since the interventional medical device and bracket structure provided in the present application and the handle fixing device provided in the present application belong to the same inventive concept, the interventional medical device and bracket structure provided in the present application have all the advantages of the handle fixing device provided in the present application. Therefore, the beneficial effects of the interventional medical device and bracket structure provided in the present application will not be described one by one here. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Those skilled in the art will appreciate that the drawings are provided for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.
[0022] Figure 1 A schematic diagram of the overall structure of a handle fixing device provided in an embodiment of the utility model;
[0023] Figure 2 A cross-sectional schematic diagram of a handle fixing device provided in an embodiment of the utility model;
[0024] Figure 3 A schematic diagram of the structure of a handle provided in an embodiment of the utility model, wherein a catheter connected to the handle is not shown;
[0025] Figure 4 A schematic diagram of the structure of the handle fixing device provided in the embodiment of the utility model when the handle is ready to be placed;
[0026] Figure 5 This is a cross-sectional view of the handle fixing device provided in the embodiment of the utility model when the handle is placed.
[0027] Wherein, [the accompanying drawings are described as follows]:
[0028] 100-handle fixing device; 101-support member; 102-buckle cover; 103-axial limit member; 104-rotational self-locking member; 105-installation space; 106-adjusting screw; 107-spring; 108-locking tongue; 109-top plate; 110-support; 111-axis; 112-fixing bolt; 113-slide rail; 200-handle; 201-axial limit structure; 202-rotational locking structure; 203-engaging groove. DETAILED DESCRIPTION
[0029] In order to make the purpose, advantages and features of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. In addition, the structure shown in the drawings is often a part of the actual structure. In particular, the emphasis of each drawing is different, and sometimes different scales are used.
[0030] As used in the present invention, the singular forms "one", "an" and "the" include plural objects, the term "or" is usually used to include the meaning of "and / or", the term "several" is usually used to include the meaning of "at least one", and the term "at least two" is usually used to include the meaning of "two or more". In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or at least two of the features, the terms "one end" and "the other end" generally refer to two corresponding parts, which include not only the endpoints, and the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. In addition, as used in the present invention, an element disposed on another element generally only indicates that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the connection, coupling, cooperation or transmission between the two elements may be direct or indirect through an intermediate element, and cannot be understood as indicating or implying the spatial position relationship between the two elements, that is, an element may be in any orientation such as inside, outside, above, below or on one side of another element, unless otherwise clearly indicated in the content. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0031] The utility model provides an interventional medical device and a handle fixing device and a bracket structure of the interventional medical device, so as to solve the problem that interventional medical device products need to be manually held with a handle.
[0032] The handle fixing device provided by the utility model is applicable to various interventional medical devices with handles, such as surgical instruments, endoscopes, conveying devices, etc., without specific limitation.
[0033] The handle fixing device provided by the utility model can be used in clinical surgery as well as in in vitro simulation or testing. In any case, by fixing the handle on the device, the user's hands can be greatly freed, allowing the user to focus more on the operation of the handle or button, thereby improving efficiency, reducing the burden of manpower, especially reducing the burden of clinical medical staff, and reducing surgical risks.
[0034] In order to enable those skilled in the art to better understand the technical solution provided by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0035] Specifically, Figures 1 to 5 As shown, a handle fixing device 100 provided by the utility model includes a support member 101, a buckle cover 102, an axial limit member 103 and a rotation self-locking member 104.
[0036] One side of the support member 101 is rotatably connected to the buckle cover 102, and the buckle cover 102 and the support member 101 are enclosed to form an installation space 105 for accommodating the handle 200. The installation space 105 is a circumferentially closed structure, and the installation space 105 is open at both ends in a direction perpendicular to the rotation plane of the handle 200, which is convenient for fully covering the handle 200 and for disassembly and assembly of the handle 200. Therefore, the handle 200 can be placed in the installation space 105 for fixing, and the installation space 105 is used to support the handle 200 and provide a support surface for the handle 200. The installation space 105 can better support the handle 200 by fully covering the handle 200 in the circumference, thereby ensuring the stability of the handle 200.
[0037] The axial limit member 103 can be arranged on the support member 101, or on the buckle cover 102, or on both the support member 101 and the buckle cover 102. The axial limit member 103 can be integrally formed with the support member 101 and (or) the buckle cover 102, or assembled and connected after being formed separately. The axial limit member 103 is also used to cooperate with the handle 200 to limit the axial movement of the handle 200, but allow the handle 200 to rotate circumferentially. In other words, the handle 200 can only rotate circumferentially and cannot move axially. If the handle 200 needs to be moved, the entire handle fixing device 100 can be moved to adjust the position of the handle 200.
[0038] Please refer to Figure 3 As shown, the handle 200 is provided with an axial limiting structure 201 that cooperates with the axial limiting member 103. In one implementation, the handle 200 is an existing structure, and the existing structure of the existing handle is used as the axial limiting structure 201. In another implementation, the axial limiting structure 201 is added to the existing handle to form a new handle 200.
[0039] Optionally, the axial limiting member 103 and the axial limiting structure 201 limit the handle 200 axially by means of concave-convex matching. Specifically, one of the axial limiting structure 201 and the axial limiting member 103 is a limiting protrusion, and the other is a limiting groove. The axial limiting is achieved by the mutual engagement of the limiting protrusion and the limiting groove, but the handle 200 is allowed to rotate circumferentially. In the exemplary embodiment described in the figure, the axial limiting structure 201 is a limiting groove, and the axial limiting member 103 is a limiting protrusion. Optionally, the axial limiting member 103 is arranged on the inner side wall of the installation space 105, and is partially extended along the circumference of the installation space 105 or is extended all around.
[0040] The rotating self-locking member 104 is an elastic locking device with a simple structure and reliable locking, and is elastically and telescopically arranged on the support member 101 and (or) the buckle cover 102. When the handle 200 rotates to a certain position, the rotating self-locking member 104 uses its own elastic force to fix the handle 200, so that the handle 200 no longer rotates and achieves a self-locking effect. Then, when the handle 200 overcomes the elastic force of the rotating self-locking member 104, it can rotate from the current position to another position.
[0041] Therefore, after using the handle fixing device 100 of this embodiment, there is no need to hold the handle 200 of the interventional medical device, so that the user can focus more on operating the various buttons on the handle 200 to complete the corresponding functions, which will greatly improve efficiency and reduce the burden of manpower, especially considering the use in clinical surgery, effectively reducing surgical risks and improving surgical efficiency. In addition, while the handle 200 is fixed to the handle fixing device 100, the handle 200 still maintains the function of being rotatable, meeting the need to rotate the handle 200 in clinical or experimental processes.
[0042] Furthermore, this embodiment also provides an interventional medical device, which includes a handle 200 and a handle fixing device 100; wherein the handle 200 is placed in the installation space 105, and the handle 200 is axially locked by cooperating with the axial limiting member 103 on the handle fixing device 100 through the axial limiting structure 201, and the handle 200 can also achieve circumferential self-locking by cooperating with the rotating locking structure 202 and the rotating self-locking member 104.
[0043] Continue to refer Figure 3 The handle 200 is also provided with a rotation locking structure 202 that cooperates with the rotation self-locking member 104. In one implementation, the handle 200 is an existing structure, and the existing structure of the existing handle is used as the rotation locking structure 202. In another implementation, the rotation locking structure 202 is added to the existing handle to form a new handle 200.
[0044] Optionally, the rotating self-locking member 104 and the rotating locking structure 202 elastically lock the handle 200 by means of concave-convex matching. Figure 3 As shown, the rotation locking structure 202 is a rotation slot, and the rotation slot is provided with a plurality of engagement slots 203 along the rotation direction of the handle 200. When the handle 200 is rotated to a certain position, the rotation self-locking member 104 engages and locks with a corresponding engagement slot 203 to fix the handle 200.
[0045] Optionally, the rotating self-locking member 104 includes an adjusting bolt 106, a spring 107 and a locking tongue 108 connected in sequence; the adjusting bolt 106 is threadedly connected to the support member 101 and acts on the spring 107, so that the spring 107 is in a compressed state and stores elastic potential energy. Then, when the handle 200 rotates circumferentially to a certain position, the locking tongue 108 is driven by the spring 107 to pass through the side wall of the installation space 105 and engage and lock with the handle 200. This structure is simple, locking and unlocking are convenient and fast, and the reliability is good. It can be understood that the function of the adjusting bolt 106 is to put the spring 107 in a compressed state and transmit the compression force to the locking tongue 108, and the locking tongue 108 is subjected to the spring force of the spring 107 pointing to the direction of the handle 200 and can lock the handle 200. When in use, the adjusting screw 106 is tightened or loosened to transfer the compression force to the spring 107 , and finally transfer the spring force to the locking tongue 108 . The spring 107 is used to support the locking tongue 108 and apply a locking force to the locking tongue 108 .
[0046] Please refer to Figure 4 and Figure 5 After the handle 200 is mounted on the handle fixing device 100, the locking tongue 108 is just stuck in one of the engaging grooves 203 of the rotating engaging groove. At this time, due to the pressure of the spring 107 on the locking tongue 108, the locking tongue 108 and the engaging groove 203 remain relatively still. When the handle 200 is rotated, the elastic force can be overcome, and the locking tongue 108 will be pressed down and enter the next engaging groove 203, so that the handle 200 can be rotated at any time and can be immediately self-locked and kept stable when it stops rotating at any time. The self-locking comes from the elastic force of the spring 107 and the locking position of the locking tongue 108. In this way, the handle 200 and the handle fixing device 100 can rotate relative to each other, and the handle 200 can remain relatively fixed when it rotates to a required angle.
[0047] The lock tongue 108 may have a variety of shapes, including but not limited to the following: a spherical lock head, a square lock head, an angled lock head or other shapes. Preferably, the lock tongue 108 is a spherical structure.
[0048] In order to lift the handle 200 to a certain height, in an optional embodiment, the support member 101 includes a top plate 109 and a support 110 connected to the bottom of the top plate 109; one end of the buckle cover 102 is rotatably connected to the end corresponding to the top plate 109 through a rotating shaft 111, and the other end of the buckle cover 102 is connected and fixed to the other end corresponding to the top plate 109 through a fixing bolt 112, and the top plate 109 and the buckle cover 102 directly enclose to form an installation space 105. The cover 102 can be rotated relative to the top plate 109 to achieve opening and closing. In this way, the rotating shaft 111 provides a fulcrum for the rotation and opening and closing of the buckle cover 102, and the buckle cover 102, as a cover of the top plate 109, encloses to form a closed cavity, and is finally fixed by a fixing screw 112 to ensure that the position of the handle 200 is stable and does not tilt.
[0049] However, it should be noted that there are various locking methods between the buckle cover 102 and the top plate 109, including but not limited to threaded locking, and various other common mechanical locking methods, such as: snap locking, spring locking, concave-convex locking, clamping, magnetic locking, etc.
[0050] The shapes of the top plate 109 and the buckle cover 102 are mainly determined by the shape of the installation space 105, and the shape of the installation space 105 can be adjusted according to the shape of the handle 200. For example, the shape of the installation space 105 is various, including but not limited to circular, and can also be non-circular, and the non-circular is a shape other than circular. Preferably, the top plate 109 and the buckle cover 102 are both U-shaped curved plates, and the two U-shaped curved plates are buckled to form a circular or quasi-circular installation space 105 to adapt to the handle 200, which is also generally circular in shape.
[0051] In addition, the support 110 can be directly arranged on an operating table or a laboratory table, or arranged on other devices, such as a bracket. Preferably, the bottom end of the support 110 away from the top plate 109 is provided with a slide rail 113, by means of which the support 110 and the bracket are slidably connected.
[0052] Furthermore, in some application scenarios, the present embodiment further provides a bracket structure, which includes a bracket and a handle fixing device 100, the handle fixing device 100 is installed on the bracket, and the handle fixing device 100 can move relative to the bracket or remain fixed relative to the bracket. Specifically, the support member 101 is directly installed on the bracket. If the position of the handle 200 needs to be adjusted, the handle fixing device 100 only needs to be slidably installed on the bracket, and the handle fixing device 100 can better move with the handle 200 when the handle fixing device 100 moves as a whole. Moreover, when the handle fixing device 100 moves to a certain position, the support member 101 can be locked with the bracket.
[0053] As for the bracket, it should be understood that the bracket can be placed on an operating table or a laboratory table, and the handle fixing device 100 can be fixed and immovable on the bracket, or slidably installed on the bracket.
[0054] The number of the handle fixing device 100 is one or more. When there are multiple handle fixing devices 100, at least one handle fixing device 100 and the bracket are always relatively fixed and cannot move, and at least one of the other handle fixing devices 100 is slidably connected to the bracket and can be connected and fixed to the bracket after sliding, and can be unfixed and slide again after being connected and fixed. For example, in this embodiment, a slide rail 113 is provided at the bottom end of the support member 101, and the slide rail 113 is matched with the bracket to achieve a slidable connection. The handle fixing device 100 is preferably locked with the bracket by screws.
[0055] The present application does not limit the specific structure of the bracket, as long as it can be stably placed on an operating table or a laboratory table. Preferably, the bracket adopts a triangular frame structure.
[0056] In summary, the interventional medical device and the handle fixing device and bracket structure of the interventional medical device provided by the present application have the following beneficial effects:
[0057] During surgery or in vitro simulation or testing, the handle 200 can be fixed by the handle fixing device 100, and there is no need to manually hold the handle 200, thereby freeing the user's hands and allowing the user to focus more on the operation of the handle buttons, thereby improving efficiency and reducing manpower burden, especially reducing the risk during surgery, making the surgery safer.
[0058] When fixing the handle 200, the handle fixing device 100 does not limit the rotation function of the handle 200, so that the user can still rotate the operating handle 200 normally. Although the handle 200 and the handle fixing device 100 can rotate relative to each other, when the handle 200 is rotated to a suitable angle, it can remain relatively fixed with the handle fixing device 100, thereby keeping the handle 200 stable to meet the clinical need to rotate the handle 200.
[0059] The handle fixing device 100 can also be connected to other devices, such as a bracket, so that the multiple handles 200 can be relatively moved relative to each other on the bracket, and the handles 200 can be fixed. In this way, the relative positions of the handles 200 can be changed, and some of the handles 200 can be relatively fixed but can move relative to other handles, thereby meeting the need to adjust the relative positions of some of the handles 200.
[0060] The interventional medical device and bracket structure provided in the present application and the handle fixing device 100 provided in the present application belong to the same inventive concept, and therefore the interventional medical device and bracket structure provided in the present application have all the advantages of the handle fixing device 100 provided in the present application.
[0061] It should be noted that the above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure content belong to the protection scope of the utility model. Obviously, technicians in this field can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations fall within the scope of the utility model and its equivalent technology, the utility model is also intended to include these modifications and variations.
Claims
1. A handle fixing device for an interventional medical device, wherein the proximal end of the interventional medical device is provided with a handle, characterized in that: The handle fixing device comprises a supporting member, a buckle cover, an axial limiting member and a rotation self-locking member; One side of the support is rotatably connected to the buckle cover, and the buckle cover and the support are enclosed to form an installation space for accommodating the handle, and the installation space is a circumferentially closed structure, and the installation space is open at both ends in a direction perpendicular to the rotation plane of the handle; The axial limiter is arranged on the support member and / or the buckle cover, and is used to limit the axial movement of the handle and allow the handle to rotate circumferentially; The rotating self-locking member is elastically and telescopically arranged on the supporting member and / or the buckle cover. When the handle is circumferentially rotated to a certain position, the rotating self-locking member fixes the handle.
2. The handle fixing device for an interventional medical device according to claim 1, characterized in that: The rotating self-locking member includes an adjusting bolt, a spring and a locking tongue which are connected in sequence; the adjusting bolt is threadedly connected to the supporting member and acts on the spring to compress the spring; when the handle rotates circumferentially to a certain position, the locking tongue is driven by the spring to pass through the side wall of the installation space and engage and lock with the handle.
3. The handle fixing device for an interventional medical device according to claim 2, characterized in that: The locking tongue is a spherical structure.
4. The handle fixing device for an interventional medical device according to claim 1, characterized in that: The support member includes a top plate and a support connected to the bottom of the top plate, one end of the buckle cover is rotatably connected to the end corresponding to the top plate through a rotating shaft, and the other end of the buckle cover is fixed to the other end corresponding to the top plate through a fixing bolt, and the top plate and the buckle cover together form the installation space.
5. The handle fixing device for an interventional medical device according to claim 4, characterized in that: The top plate and the buckle cover are both U-shaped curved plates, and / or the bottom end of the support away from the top plate is provided with a slide rail.
6. The handle fixing device for an interventional medical device according to claim 1, characterized in that: The axial limiting member is arranged on the inner side wall of the installation space, and is partially extended or circumferentially extended along the circumference of the installation space.
7. The handle fixing device for an interventional medical device according to claim 6, characterized in that: The axial limiting member is a limiting protrusion.
8. An interventional medical device, characterized in that: It comprises a handle and a handle fixing device of an interventional medical device according to any one of claims 1 to 7, wherein the handle is provided with an axial limiting structure cooperating with an axial limiting piece in the handle fixing device and a rotation locking structure cooperating with a rotation self-locking piece.
9. The interventional medical device according to claim 8, characterized in that: The axial limiting structure is a limiting groove, the axial limiting member is a limiting protrusion, and / or the rotation locking structure is a rotation slot, and the rotation slot is provided with a plurality of engagement grooves along the rotation direction of the handle. When the handle rotates circumferentially to a certain position, the rotating self-locking member engages and locks with a corresponding engagement groove to fix the handle.
10. A bracket structure, characterized in that: The invention comprises a bracket and a handle fixing device of an interventional medical device according to any one of claims 1 to 7, wherein the handle fixing device is mounted on the bracket and can move relative to the bracket or remain fixed relative to the bracket.