Medical accessory

Abstract

The utility model provides a medical accessory. The medical accessory comprises a base and a clamping piece, the base is provided with a loading groove extending in the axial direction of the base in a penetrating mode. The clamping piece is connected with the base and is configured to be used for being matched with the base so as to clamp a target object which is partially arranged in the loading groove in a penetrating mode. The target object comprises but not limited to a catheter, and when the target object is clamped by the medical accessory, a doctor can hold the target object by pinching the medical accessory, so that the problem that the twisting control performance of the target object is poor due to the fact that the target object cannot be stably pinched due to the fact that the outer diameter of the target object is small is solved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a medical accessory. Background Technology

[0002] The maneuverability of medical devices includes torque control performance. For catheters, torque control performance refers to the torque transmission performance from the proximal to the distal end of the catheter. Improving the torque control performance of a catheter can enhance its apposition and positioning during surgery, thereby improving the reliability and safety of the procedure.

[0003] In practice, it is desirable for catheters to achieve a torque control ratio of 1:1. However, due to limitations imposed by factors such as catheter materials, manufacturing processes, and catheter dimensions, the torque performance of catheters cannot reach 1:1. Therefore, it is imperative to find solutions beyond materials and manufacturing processes to improve the torque control performance of catheters. Utility Model Content

[0004] The purpose of this invention is to provide a medical accessory to improve the torsion control performance of slender structural components such as catheters.

[0005] To achieve the above objectives, this utility model provides a medical accessory, including a base and a clamping member; the base is provided with a loading groove extending through it along its axial direction; the clamping member is connected to the base and is configured to selectively engage with the base to clamp a target object partially inserted in the loading groove or to disengage to release the target object.

[0006] Optionally, the base is further provided with a locking slot, which is located on the outer periphery of the loading slot and is also in communication with the loading slot;

[0007] The clamping element includes a locking block, which is at least partially disposed within the locking block slot and is movably connected to the base;

[0008] The medical accessory is configured to engage or disengage with the base by moving the locking block relative to the base.

[0009] Optionally, the clamping member includes a connecting shaft, and the locking block is connected to the base via the connecting shaft; at least a portion of the surface of the locking block facing the loading groove is formed as a contact surface, and the contact surface is inclined relative to the axial direction of the connecting shaft.

[0010] Optionally, the card block is rotatably connected to the base, and the axis of rotation of the card block intersects with or is not in the same plane as the axis of the loading groove;

[0011] The medical accessory is configured such that the locking block engages or disengages from the base by rotating the locking block.

[0012] Optionally, the base is provided with a first connecting through hole, and the clamping member further includes a connecting shaft, which is partially inserted into the first connecting through hole and is capable of rotation. The connecting shaft is also connected to the locking block; the axis of the connecting shaft constitutes the rotation axis of the locking block.

[0013] At least one of the wall of the first connecting through hole and the outer surface of the connecting shaft is a smooth surface; or,

[0014] The first connecting through hole has an internal thread on its wall, and at least a portion of the outer side of the connecting shaft has an external thread, the external thread of the connecting shaft engaging with the internal thread of the first connecting through hole.

[0015] Optionally, the base is provided with a second connecting through hole, the second connecting through hole extending along a preset direction, the preset direction being inclined relative to the axial direction of the loading groove;

[0016] One axial end of the connecting shaft is connected to the locking block, and the other axial end of the connecting shaft passes through the second connecting through hole and extends to the outside of the base;

[0017] In the preset direction, the size of the connecting shaft is smaller than the size of the second connecting through hole, so that the connecting shaft can move along the preset direction;

[0018] The medical accessory is configured to move the connecting shaft along the preset direction to drive the locking block to move along the preset direction, so that the locking block engages or disengages from the base.

[0019] Optionally, the card block is provided with a third connecting through hole, and the wall of the third connecting through hole is provided with an internal thread;

[0020] The connecting shaft has an external thread on at least a portion of its outer side surface, and the connecting shaft is partially inserted into the third connecting through hole, with the external thread of the connecting shaft engaging with the internal thread of the third connecting through hole.

[0021] Optionally, the base includes a first seat body and a second seat body; the first seat body is provided with a first loading through hole extending through it along its axial direction, and the first seat body is also provided with a first mating portion; the second seat body is provided with a second mating portion, which is used to cooperate with the first mating portion so that the second seat body and the first seat body are coaxially connected; the second seat body is also provided with a second loading through hole extending through it along its axial direction, the second loading through hole includes a first hole segment and a second hole segment coaxially connected, the first hole segment is closer to the first seat body than the second hole segment, and the diameter of the first hole segment gradually decreases in the direction away from the first seat body;

[0022] The clamping member is connected to one axial end of the first base body and includes a plurality of elastic clips, which are spaced apart around the axis of the first loading through hole; the elastic clips extend along the axial direction of the first loading through hole, and the distance from the surface of the elastic clip opposite to the axis of the first loading through hole to the axis of the first loading through hole decreases in a direction away from the first base body; the clamping member is used to at least partially insert into the first hole segment, and the distance from the free end of the elastic clip to the axis of the first loading through hole is reduced by the action of the hole wall of the first hole segment;

[0023] The loading groove includes at least the first loading through hole and the second hole segment.

[0024] Optionally, the first seat body includes an axially connected seat body and a connecting section, wherein the outer diameter of the connecting section is smaller than the outer diameter of the seat body;

[0025] The clamping member is connected to the end of the connecting section away from the seat body;

[0026] The first mating part includes an external thread provided on the outer side of the connecting section, and the second mating part includes an internal thread provided on the hole wall of the first hole section.

[0027] Optionally, the medical accessory further includes a collimation part, which is disposed at one end of the first seat opposite to the second seat, or at one end of the second seat opposite to the first seat, and is coaxially arranged with and connected to the loading groove.

[0028] Optionally, the base includes a proximal end portion, the outer diameter of which gradually decreases from the distal end to the proximal end; and / or,

[0029] The outer surface of the base is also provided with an anti-slip structure.

[0030] Compared with the prior art, the medical accessory of this utility model has the following advantages:

[0031] The aforementioned medical accessory includes a base and a clamping member; the base has a loading groove extending through it along its axial direction; the clamping member is connected to the base and configured to cooperate with the base to clamp a target object partially inserted into the loading groove. The target object includes, but is not limited to, a catheter. By using the medical accessory to clamp the target object, a physician can hold the target object by pinching the medical accessory, thus solving the problem of poor torsional control performance of the target object caused by the inability to stably hold it due to its small outer diameter. Attached Figure Description

[0032] The accompanying drawings are provided to better understand this utility model and do not constitute an undue limitation thereof. Wherein:

[0033] Figure 1 This is a schematic diagram of the structure of a medical accessory provided according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the application scenario of the medical accessory provided by this utility model according to an embodiment, showing that the medical accessory has not yet clamped the target object;

[0035] Figure 3 This is a schematic diagram of the application scenario of the medical accessory provided in Embodiment 1 of this utility model, showing the medical accessory clamping the target object;

[0036] Figure 4 This is a schematic diagram illustrating the application scenario of the medical accessory provided in Embodiment 1 of this utility model. Figure 4 and Figure 3 The observation directions are different;

[0037] Figure 5 This is a schematic diagram of the structure of the medical accessory provided according to Embodiment 2 of this utility model;

[0038] Figure 6 This is a structural schematic diagram of the medical accessory provided according to Embodiment 2 of this utility model. Figure 6 and Figure 5 The observation directions are different;

[0039] Figure 7 This is a schematic diagram of the application scenario of the medical accessory provided in Embodiment 3 of this utility model. In the diagram, the locking block has not yet clamped the target object.

[0040] Figure 8 This is a schematic diagram of the application scenario of the medical accessory provided in Embodiment 3 of this utility model, in which the clamping block clamps the target object;

[0041] Figure 9 This is a schematic diagram of the structure of the card block of the medical accessory provided in Embodiment 3 of this utility model;

[0042] Figure 10 This is a structural schematic diagram of the clamping component of the medical accessory provided in Embodiment 3 of this utility model;

[0043] Figure 11 This is a schematic diagram of the structure of the medical accessory provided according to Embodiment 4 of this utility model. In the diagram, the first seat and the second seat are not connected.

[0044] Figure 12 This is a schematic diagram of the structure of the second seat of the medical accessory provided according to Embodiment 4 of this utility model;

[0045] Figure 13 This is a schematic diagram of the structure of the second seat of the medical accessory provided according to Embodiment 4 of this utility model. Figure 13 and Figure 12 The observation directions are different;

[0046] Figure 14 This is a schematic diagram of the structure of the medical accessory provided in Embodiment 5 of this utility model;

[0047] Figure 15 This is a schematic diagram of the collimation section of the medical accessory provided in Embodiment 5 of this utility model.

[0048] [The annotations in the attached figures are explained below]:

[0049] 10-Medical accessory; 100-Base; 101-Loading slot; 102-Card slot; 103-First connecting through hole; 104-Anti-slip structure; 105-Second connecting through hole; 106-Proximal end; 107-Main body; 108-Distal end; 110-First seat body; 111-First docking part; 112-Seat body; 113-Connecting section; 120-Second seat body; 121-Second docking part. 122-Second loading through hole, 1221-First hole section, 1222-Second hole section, 200-Clamping member, 210-Clocking block, 211-Contact surface, 212-Third connecting through hole, 220-Connecting shaft, 221-Internal hexagonal groove, 230-Operating part, 240-Elastic clamping piece, 300-Collimation part, 310-First segment, 320-Second segment, 301-Collimation cavity, 20-Target object. Detailed Implementation

[0050] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show components related to this utility model and are not drawn according to the actual number, shape, and size of the components in implementation. In actual implementation, the type, quantity, and proportion of each component can be arbitrarily changed, and the component layout may also be more complex.

[0051] Furthermore, while each embodiment described below possesses one or more technical features, this does not imply that users of this utility model must simultaneously implement all technical features in any embodiment, or can only separately implement some or all technical features in different embodiments. In other words, provided it is feasible, those skilled in the art can selectively implement some or all technical features in any embodiment, or selectively implement a combination of some or all technical features in multiple embodiments, based on the disclosure of this utility model and depending on design specifications or implementation requirements, thereby increasing the flexibility in implementing this utility model.

[0052] As used herein, the singular forms “a,” “an,” and “the” include plural objects, and the plural form “a plurality” includes two or more objects, unless otherwise expressly indicated. As used herein, the term “or” is generally used to include the meaning of “and / or,” unless otherwise expressly indicated, and the terms “install,” “connect,” and “link” should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Connections can be mechanical or electrical. Connections can be direct or indirect through an intermediate medium, and can represent internal communication between two elements or an interaction between two elements. Relational terms such as “first,” “second,” etc., are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor do they indicate relative importance or implicitly specify the number of indicated technical features. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] The terms “proximal” and “distal” used in this article are used to describe the relative positions and orientations of the various components and parts of a medical device. Although they are not restrictive, “distal” refers to the end of the medical device that first enters the patient’s body during use, or the end that is closer to the patient. “Proximal” is the end that is opposite to “distal”, and is farther away from the patient and closer to the operator than “distal”.

[0054] Taking radiofrequency ablation for atrial fibrillation in electrophysiological surgery as an example, during the procedure, after the operator delivers the catheter to the pulmonary vein orifice in the left atrium of the heart, they need to pinch the proximal end of the catheter with their fingers. This serves two purposes: firstly, it maintains the catheter's position, preventing displacement during the cardiac cycle and thus avoiding ineffective treatment; secondly, it provides force to press the distal end of the catheter against the target myocardium with each heartbeat, ensuring the effectiveness and safety of the ablation. However, in current techniques, due to the extremely small size of the catheter and the operator wearing medical gloves during the procedure, contact with viscous fluids such as the patient's blood and contrast agents is unavoidable. This can easily cause the catheter to slip when the operator pinches it, thus affecting the catheter's maneuverability.

[0055] In view of this, such as Figures 1 to 15 This utility model provides a medical accessory 10, which includes a base 100 and a clamping member 200. The base 100 has a loading groove 101 extending through it along its own axial direction. The loading groove 101 is used to clamp a target object 20, which is an elongated structural component, specifically a catheter, guidewire, or other elongated medical device. The clamping member 200 is connected to the base 100 and configured to engage or disengage with the base 100. When the clamping member 200 engages with the base 100, the medical accessory 10 clamps the target object 20 partially passing through the loading groove 101 to prevent the target object 20 from detaching from the medical accessory 10. When the clamping member 200 disengages from the base 100, the medical accessory 10 no longer clamps the target object 20, allowing the target object 20 to detach from the medical accessory 10.

[0056] That is, the medical accessory 10 is fitted onto the target object 20 via the loading groove 101, specifically onto the proximal end of the target object 20, and the relative fixation of the proximal end of the target object 20 to the medical accessory 10 is achieved through the cooperation of the base 100 and the clamping member 200. Thus, the surgeon can hold the proximal end of the target object 20 during the procedure by holding the medical accessory 10. The outer diameter of the base 100 can be designed to be relatively large to facilitate stable holding by the surgeon, thereby avoiding the problem of decreased torsional control of the target object 20 due to the surgeon's inability to hold it stably and effectively.

[0057] Furthermore, the medical accessory 10 repeatedly clamps the target object 20, allowing the surgeon to adjust the clamping position of the medical accessory 10 on the target object 20 as needed to adapt to the different needs of different patients for different target objects 20.

[0058] To make the objectives, advantages, and features of this utility model clearer, the following detailed description is provided in conjunction with several embodiments. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, and are only used to conveniently and clearly illustrate the objectives of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar components.

[0059] <Example 1>

[0060] Figure 1 This diagram shows the structure of the medical accessory provided in this embodiment. Figures 2 to 5 A schematic diagram of the structure of the medical accessory provided in this embodiment is shown. Figures 1 to 5 As shown, in this embodiment, the base 100 is further provided with a locking slot 102, which is located on the outer periphery of the loading slot 101 and communicates with it. The clamping member 200 includes a locking block 210, which is at least partially disposed within the locking slot 102 and is movably connected to the base 100. The medical accessory 10 is configured to engage or disengage the locking block 210 with the base 100 by moving the locking block 210 relative to the base 100.

[0061] Specifically, when the locking block 210 moves along the first direction to a point where it is partially located in the loading groove 101 and presses against the target object 20, the locking block 210 clamps the target object 20 together with the groove wall of the loading groove 101. When the locking block 210 continues to move along the first direction or along a second direction opposite to the first direction so that it moves away from the target object 20 and no longer presses against the target object 20, the locking block 210 no longer clamps the target object 20 together with the groove wall of the loading groove 101.

[0062] In this embodiment, the locking block 210 is rotatably connected to the base 100, and the axis of rotation of the locking block 210 intersects with or is not parallel to the axis of the loading groove 101. Thus, by controlling the locking block 210 to rotate about its axis of rotation in the first direction, the locking block 210 can be rotated until it is partially located within the loading groove 101 and pressed against the target object 20. Continuing to rotate the locking block 210 in the first direction, or in the second direction, can move the locking block 210 away from the target object 20, thereby releasing the pressure on the target object 20. It can be understood that one of the first direction and the second direction is clockwise, and the other is counterclockwise. Furthermore, the axis of rotation of the locking block 210 can be perpendicular to the axis of the loading groove 101.

[0063] Optionally, the locking slot 102 may extend to the outer surface of the base 100 to form an opening (not shown in the figure) on the outer surface of the base 100, so that both the locking slot 102 and the loading slot 101 communicate with the outside of the base 100 through the opening. This facilitates the assembly of the locking block 210 and also facilitates the partial insertion of the target object 20 into the loading slot 101.

[0064] It is understood that the clamping member 200 further includes a connecting shaft 220, and the locking block 210 is rotatably connected to the base 100 via the connecting shaft 220. Specifically, the base 100 is provided with a first connecting through hole 103, and the connecting shaft 220 partially passes through the first connecting through hole 103 and is capable of rotation. The connecting shaft 220 is also connected to the locking block 210 so that the two rotate synchronously, thereby the axis of the connecting shaft 220 constitutes the rotation axis of the locking block 210.

[0065] In this embodiment, at least one of the outer surface of the connecting shaft 220 and the hole wall of the first connecting through hole 103 is a smooth curved surface, preferably both are smooth curved surfaces, so that the locking block 210 can rotate smoothly.

[0066] Preferably, at least a portion of the surface of the locking block 210 facing the loading groove 101 is formed as a contact surface 211, which is used to contact the target object 20. Preferably, the contact surface 211 is inclined relative to the axial direction of the connecting shaft 220. The advantage of this arrangement is that when the locking block 210 rotates at different angles along the first direction, the distance from the axis of the loading groove 101 to the contact surface 211 is different. This allows the contact surface 211 to contact target objects 20 with different outer diameters, thereby enabling the same medical accessory 10 to be used with target objects 20 of different outer diameters, thus increasing the application range of the same medical accessory 10.

[0067] It is understood that the angle α of the contact surface 211 relative to the axial direction of the connecting shaft 220 is greater than 0° and less than 90°, preferably 45° to 75°. Thus, the same medical accessory 10 can be applied to different target objects 20 with outer diameters ranging from 2F to 8.5F.

[0068] The base 100 has a circular, elliptical, or polygonal cross-section. Optionally, an anti-slip structure 104 is also provided on the outer surface of the base 100. Figures 1 to 5 Not shown in the image, please refer to the image. Figure 6 , Figure 7 , Figure 8 , Figure 11 , Figure 12 , Figure 14(The annotations in the text).

[0069] Optionally, the base 100 further includes a proximal end portion 106, the outer diameter of which decreases from the distal end to the proximal end. It should be noted that when the cross-section of the base 100 is elliptical, the outer diameter of the proximal end portion 106 refers to the dimension of the major axis of the cross-section of the base 100; when the cross-section of the base 100 is polygonal, the outer diameter of the proximal end portion 106 refers to the diameter of the circumcircle of the cross-section of the base 100.

[0070] Furthermore, in this embodiment, the base 100 can be made of any suitable material, such as a metal or a polymer. Optional metal materials include stainless steel, and optional polymer materials include polyetheretherketone (PEEK) or resin-based materials. The locking block 210 can also be made of any suitable material, including but not limited to metals and polymers, but preferably a polymer. The connecting shaft 220 has a cylindrical structure and can be made of either a polymer or a metal; from a strength perspective, it is preferably made of a metal such as stainless steel.

[0071] <Example 2>

[0072] Figure 5 and Figure 6 A schematic diagram of the structure of the medical accessory 10 provided in this embodiment is shown. Figure 5 and Figure 6 As shown, the difference between this embodiment and Embodiment 1 is that the first connecting through hole 103 has an internal thread on its wall, and at least a portion of the outer surface of the connecting shaft 220 has an external thread, and the external thread on the connecting shaft 220 engages with the internal thread on the wall of the first connecting through hole 103. This design ensures that after the locking block 210 presses against the target object 20, the surgeon needs to apply considerable force to rotate the locking block 210 away from the target object 20 again. This reduces the risk of the locking block 210 rotating unintentionally and moving away from the target object 20 during surgery, thus preventing the target object 20 from being released due to accidental contact by the surgeon.

[0073] Optionally, the end face of the connecting shaft 220 facing the outside of the base 100 is also provided with an internal hexagonal groove 221 to facilitate the operator to rotate the connecting shaft 220 using an internal hexagonal wrench.

[0074] Additionally, it is understood that when the connecting shaft 220 and the locking block 210 rotate, the connecting shaft 220 and the locking block 210 also move along the axial direction of the connecting shaft 220.

[0075] <Example 3>

[0076] Figure 7 and Figure 8 A schematic diagram of the structure of the medical accessory 10 provided in this embodiment is shown. Figure 7 and Figure 8 As shown, the difference between this embodiment and Embodiment 1 is that the connection method between the base 100 and the card block 220 is different.

[0077] Specifically, in this embodiment, the base 100 is provided with a second connecting through hole 105 to replace the first connecting through hole 103. The second connecting through hole 105 extends along a preset direction, which is inclined relative to the axial direction of the loading groove 101. One axial end of the connecting shaft 220 is connected to the locking block 210, and the other axial end of the connecting shaft 220 passes through the second connecting through hole 105 and extends to the outside of the base 100 to receive external forces. The dimension of the connecting shaft 220 in the preset direction is smaller than the dimension of the second connecting through hole 105 in the preset direction, so that the connecting shaft 220 can move along the preset direction under the action of external forces.

[0078] The medical accessory 10 is configured to move the connecting shaft 220 along the preset direction to drive the locking block 210 to move along the preset direction, thereby enabling the locking block 210 to engage or disengage with the base 100. Specifically, when the connecting shaft 220 drives the locking block 210 along the preset direction and in a direction close to the axis of the loading groove 101 (e.g., ... Figure 7 and Figure 8 When the connecting shaft 220 moves (as indicated by arrow S1), it can achieve the purpose of moving the locking block 210 to a position where it is partially located in the loading groove 101 and presses against the target object 20; when the connecting shaft 220 drives the locking block 210 along the preset direction and in a direction away from the axis of the loading groove 101 (e.g., Figure 7 and Figure 8 When the movement (as indicated by arrow S2) occurs, the locking block 210 can move away from the target object 20 to release the pressure on the target object 20. In other words, in this embodiment, the first direction refers to the direction along the preset direction and close to the axis of the loading groove 101, and the second direction refers to the direction along the preset direction and away from the axis of the loading groove 101.

[0079] Further, please refer to Figure 9The locking block 210 is provided with a third connecting through hole 212, and the wall of the third connecting through hole 212 is provided with an internal thread. At least a portion of the outer surface of the connecting shaft 220 is provided with an external thread (not shown in the figure). The connecting shaft 220 partially passes through the third connecting through hole 212, and the external thread on the connecting shaft 220 engages with the internal thread on the third connecting through hole 212 to perform helical transmission. After the pressing block 210 presses against the target object 20, the operator can also control the rotation of the connecting shaft 220 while keeping the pressing block 210 and the target object 20 relatively stationary, so that one end of the connecting shaft 220 located within the base 100 extends out from the third connecting through hole 212 (e.g., ...). Figure 10 (As shown) and pressed against the inner wall of the base 100. The effect of this is to lock the connecting shaft 220 by the friction between the connecting shaft 220 and the inner wall of the base 100, so as to reduce the risk of the connecting shaft 220 moving unintentionally along the axis away from the loading groove 101 due to accidental contact by the surgeon during the operation, which would cause the target object 20 to be released.

[0080] It is understood that when the target object 20 needs to be released, the operator should first control the connecting shaft 220 to rotate while keeping the pressure block 210 and the target object 20 relatively stationary, so that one end of the connecting shaft 220 located in the base 100 retracts into the third connecting through hole 212, and then control the connecting shaft 220 to move along the axis away from the loading groove 101 in the preset direction.

[0081] Furthermore, from the perspective of facilitating the operator to apply force to the connecting shaft 220, it is preferable that an operating part 230 is also provided on the end of the connecting shaft 220 located outside the base 100, the operating part 230 being, for example, a nut. The operating part 230 can be made of metal or polymer material; from the perspective of manufacturing cost, it is preferable that the operating part 230 is made of polymer material.

[0082] The locking block 210 and the connecting shaft 220 are preferably made of the same material. From a cost perspective, it is preferable that the locking block 210 and the connecting shaft 220 are made of polymer material.

[0083] Furthermore, in this embodiment, the reference is returned. Figure 7 and Figure 8The base 100 includes a proximal end portion 106, a main body portion 107, and a distal end portion 108 connected sequentially from proximal to distal. The outer diameter of the proximal end portion 106 gradually decreases from distal to proximal, the outer diameter of the main body portion 107 remains constant, and the outer diameter of the distal end portion 108 gradually decreases from proximal to distal. The second connecting through hole 105 may be at least partially disposed on the main body portion 107, for example, as shown in the example... Figure 7 and Figure 8 As shown, the second connecting through hole is mostly disposed on the main body 107 and partially disposed on the proximal end 106; of course, in an alternative example, the second connecting through hole may also be mostly disposed on the main body and partially disposed on the distal end (not shown in the figure), or entirely disposed on the main body (not shown in the figure).

[0084] <Example 4>

[0085] Figure 11 This is a schematic diagram of the structure of the medical accessory 10 provided in this embodiment. In this embodiment, the base 100 includes two separate seats, and the clamping member 200 is connected to one of the seats and engages or disengages with the other seat. For ease of description, in this embodiment, the seat connected to the clamping member 200 is referred to as the first seat 110, and the other seat is referred to as the second seat 120.

[0086] Continue to refer to Figure 11 and combined Figure 12 and Figure 13 The first seat 110 has a first loading through hole (not shown in the figure) extending through its own axial direction. The first seat 110 also has a first mating portion 111. The second seat 120 has a second mating portion 121, which mates with the first mating portion 111 to coaxially connect the second seat 120 and the first seat 110. The second seat 120 also has a second loading through hole 122 extending through its axial direction, comprising a first hole segment 1221 and a second hole segment 1222 coaxially connected. When the second seat 120 is connected to the first seat 110, the first hole segment 1221 is closer to the first seat 110 than the second hole segment 1222, and the first hole segment 1221 is a tapered hole with a diameter that gradually decreases in the direction away from the first seat 110.

[0087] The clamping member 200 is connected to one axial end of the first base 110 and includes a plurality of elastic clips 240. The plurality of elastic clips 240 are arranged at intervals around the axis of the first loading through hole. Each elastic clip 240 extends axially along the first loading through hole, and the distance from the surface of the elastic clip 240 on the side away from the axis of the first loading through hole to the axis of the first loading through hole decreases in the direction away from the first base 110. In other words, the clamping member 200 is generally tapered, and its outer diameter gradually decreases in the direction away from the first base 110.

[0088] The clamping member 200 is also configured such that when the elastic clip 240 is subjected to radially inward compressive force along the first loading through hole, the free end of the elastic clip 240 moves in a direction close to the axis of the first loading through hole, such that the distance from the other parts of the elastic clip 240, except for its connection point with the first seat 110, to the axis of the first loading through hole is reduced.

[0089] The usage process of the medical accessory 10 provided in this embodiment includes: First, placing the target object (( Figures 11 to 13 The clamping member 200 (not shown) is partially inserted into the space enclosed by the first loading through-hole, the plurality of elastic clips 240, and the second loading through-hole 122, such that the first segment 1221 is closer to the first seat 110 than the second segment 1222. Then, the clamping member 200 is at least partially inserted into the first segment 1221 of the second loading through-hole. During this process, the wall of the first segment 1221 applies a radially inward compressive force along the first loading through-hole to the elastic clips 240, causing the free end of the elastic clips 240 to move along an axis close to the first loading through-hole, thereby clamping the target object 200. Finally, the first seat 110 and the second seat 120 are connected through the cooperation of the first mating portion 111 and the second mating portion 121, keeping the clamping member 200 in the state of clamping the target object 20.

[0090] It can be understood that after the first seat 110 and the second seat 120 are connected, the first hole segment 1221 is at least partially occupied by the clamping member 200. Therefore, in this embodiment, the loading groove ( Figures 11 to 13 (Not marked in the text) includes at least the first loading through hole and the second hole segment 1222.

[0091] The first mating portion 111 and the second mating portion 121 can be any suitable structure, for example, both including threaded structures. When both the first mating portion 111 and the second mating portion 121 are threaded structures, the first seat body 110 may include an axially connected seat body 112 and a connecting section 113. The outer diameter of the connecting section 113 is smaller than the outer diameter of the seat body 112 and also matches the diameter of the first hole section 1221. An external thread is provided on the outer surface of the connecting section 113 to serve as at least a part of the first mating portion 111. Correspondingly, an internal thread is provided on the hole wall of the first hole section 1221 to serve as at least a part of the second mating portion 121.

[0092] Optionally, the outer diameter of the seat body 112 gradually decreases in the direction away from the second seat body 120, and the outer diameter of the second seat body 120 decreases in the direction away from the seat body 112. That is, one of the seat body 112 and the second seat body 120 located on the proximal side constitutes the proximal end portion mentioned above (not shown in the figure).

[0093] In addition, the anti-slip structure 104 can be provided on the outer side of the seat body 112 and the outer side of the second seat body 120.

[0094] <Example 5>

[0095] Figure 14 A schematic diagram of the structure of the medical accessory 10 provided in this embodiment is shown. Figure 14 As shown, the difference between the medical accessory 10 in this embodiment and that in Embodiment 4 is that it further includes a collimation part 300. The collimation part 300 is disposed at the end of the first seat 110 away from the second seat 120, or at the end of the second seat 120 away from the first seat 110, specifically determined by the relative positions of the first seat 110 and the second seat 120. For example, during normal use of the medical accessory 10, when the first seat 110 is at least partially located on the proximal side of the second seat 120, the collimation part 300 is disposed at the end of the second seat 120 away from the first seat 110. Alternatively, during normal use of the medical accessory 10, when the first seat 110 is at least partially located on the distal side of the second seat 120, the collimation part 300 is disposed at the end of the first seat 110 away from the second seat 120.

[0096] It is understood that the collimation portion 300 has a collimation cavity 301 extending through it along its axial direction (e.g., Figure 15 As shown, the collimation cavity 301 and the loading groove 101 are coaxially arranged and interconnected. In application, the target object 20 is also partially inserted into the collimation cavity 301.

[0097] The collimation section 300 preferably includes a first segment 310 and a second segment 320 coaxially connected. The first segment 310 is located on the proximal side of the second segment 320, and the inner diameter of the first segment 310 is larger than the inner diameter of the second segment 320, and the outer diameter of the first segment 310 is larger than the outer diameter of the second segment 320.

[0098] One advantage of setting the collimation section 300 is that it makes the operation of inserting the target object into the sheath more convenient. Another advantage is that it can effectively avoid damage to the target object during the insertion operation. Yet another advantage is that it can further improve the surgeon's control over the target object during the operation, thereby improving the positioning and safety of the target object.

[0099] While the present invention has been disclosed above, it is not limited thereto. Those skilled in the art can make various modifications and variations to the present invention without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include such modifications and variations.

Claims

1. A medical accessory, characterized in that, It includes a base and a clamping member; the base has a loading groove extending through it along its axial direction; the clamping member is connected to the base and is configured to selectively engage with the base to clamp a target object partially inserted into the loading groove or to disengage to release the target object.

2. The medical accessory of claim 1, wherein, The base is also provided with a locking slot, which is located on the outer periphery of the loading slot and is also in communication with the loading slot; The clamping element includes a locking block, which is at least partially disposed within the locking block slot and is movably connected to the base; The medical accessory is configured to engage or disengage with the base by moving the locking block relative to the base.

3. The medical accessory of claim 2, wherein, The clamping element includes a connecting shaft, and the locking block is connected to the base via the connecting shaft; at least a portion of the surface of the locking block facing the loading groove is formed as a contact surface, and the contact surface is inclined relative to the axial direction of the connecting shaft.

4. The medical accessory of claim 2, wherein, The card block is rotatably connected to the base, and the axis of rotation of the card block intersects with or is not in the same plane as the axis of the loading groove; The medical accessory is configured such that the locking block engages or disengages from the base by rotating the locking block.

5. A medical accessory according to claim 4, characterised in that The base is provided with a first connecting through hole, and the clamping member further includes a connecting shaft. The connecting shaft is partially inserted into the first connecting through hole and is capable of rotation. The connecting shaft is also connected to the locking block. The axis of the connecting shaft constitutes the rotation axis of the locking block. At least one of the wall of the first connecting through hole and the outer surface of the connecting shaft is a smooth surface; or, The first connecting through hole has an internal thread on its wall, and at least a portion of the outer side of the connecting shaft has an external thread, the external thread of the connecting shaft engaging with the internal thread of the first connecting through hole.

6. The medical accessory of claim 2, wherein, The base is provided with a second connecting through hole, which extends along a preset direction, and the preset direction is inclined relative to the axial direction of the loading groove; The clamping member includes a connecting shaft, one axial end of which is connected to the locking block, and the other axial end of which passes through the second connecting through hole and extends to the outside of the base; In the preset direction, the size of the connecting shaft is smaller than the size of the second connecting through hole, so that the connecting shaft can move along the preset direction; The medical accessory is configured to move the connecting shaft along the preset direction to drive the locking block to move along the preset direction, so that the locking block engages or disengages from the base.

7. A medical accessory according to claim 6, characterised in that The card block is provided with a third connecting through hole, and the wall of the third connecting through hole is provided with internal threads; The connecting shaft has an external thread on at least a portion of its outer side surface, and the connecting shaft is partially inserted into the third connecting through hole, with the external thread of the connecting shaft engaging with the internal thread of the third connecting through hole.

8. The medical accessory of claim 1, wherein, The base includes a first seat and a second seat; the first seat has a first loading through hole extending through it along its axial direction, and the first seat also has a first mating portion; the second seat has a second mating portion, which is used to cooperate with the first mating portion so that the second seat and the first seat are coaxially connected; the second seat also has a second loading through hole extending through it along its axial direction, the second loading through hole includes a first hole segment and a second hole segment coaxially connected, the first hole segment is closer to the first seat than the second hole segment, and the diameter of the first hole segment gradually decreases in the direction away from the first seat; The clamping member is connected to one axial end of the first base body and includes a plurality of elastic clips, which are spaced apart around the axis of the first loading through hole; the elastic clips extend along the axial direction of the first loading through hole, and the distance from the surface of the elastic clip opposite to the axis of the first loading through hole to the axis of the first loading through hole decreases in a direction away from the first base body; the clamping member is used to at least partially insert into the first hole segment, and the distance from the free end of the elastic clip to the axis of the first loading through hole is reduced by the action of the hole wall of the first hole segment; The loading groove includes at least the first loading through hole and the second hole segment.

9. A medical accessory according to claim 8, characterised in that The first seat body includes an axially connected seat body and a connecting section, wherein the outer diameter of the connecting section is smaller than the outer diameter of the seat body; The clamping member is connected to the end of the connecting section away from the seat body; The first mating part includes an external thread provided on the outer side of the connecting section, and the second mating part includes an internal thread provided on the hole wall of the first hole section.

10. The medical accessory according to claim 8, characterized in that, The medical accessory also includes a collimator, which is disposed at one end of the first seat away from the second seat, or at one end of the second seat away from the first seat, and is coaxially arranged with and connected to the loading groove.

11. The medical accessory of any one of claims 1-10, wherein, The base includes a proximal end portion, the outer diameter of which gradually decreases in the direction from the distal end to the proximal end; and / or, The outer surface of the base is also provided with an anti-slip structure.

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