A medical accessory

Abstract

The present invention provides a medical auxiliary component, comprising a base and a clamping component; the base is provided with a loading slot extending through the base along its axial direction; the clamping component is connected to the base and is configured to cooperate with the base to clamp a target object partially passing through the loading slot. The target object includes but is not limited to a catheter. When the target object is clamped by the medical auxiliary component, a doctor can hold the target object by pinching the medical auxiliary component, thereby solving the problem of poor torque control performance of the target object caused by the small outer diameter of the target object and the inability to stably pinch the target object.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a medical accessory. Background Art

[0002] The control performance of medical devices includes torque control performance. For catheters, torque control performance refers to the torque transmission performance from the proximal end to the distal end of the catheter. By improving the torque control performance of the catheter, the adhesion and positioning of the catheter during surgery can be improved, thereby improving the reliability and safety of the surgery.

[0003] In practice, it is expected that the torque control performance of the catheter can reach 1:1, but due to the limitations of the catheter material, processing technology, catheter size and other factors, the torque performance of the catheter cannot reach 1:1. Therefore, it is imperative to find solutions other than materials and processing technology to improve the torque control performance of the catheter. Summary of the invention

[0004] The object of the present invention is to provide a medical accessory to improve the torsion control performance of a slender structural member such as a catheter.

[0005] To achieve the above-mentioned purpose, the present invention provides a medical auxiliary component, including a base and a clamping member; the base is provided with a loading groove extending axially therethrough; the clamping member is connected to the base and is configured to selectively cooperate with the base to clamp a target object partially inserted into the loading groove or to release the target object.

[0006] Optionally, a block groove is further provided on the base, and the block groove is located at the periphery of the loading groove and is also communicated with the loading groove;

[0007] The clamping member comprises a clamping block, which is at least partially disposed in the clamping block groove and movably connected to the base;

[0008] The medical accessory is configured to enable the clamping block to be engaged with or disengaged from the base by moving the clamping block relative to the base.

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

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

[0011] The medical accessory is configured to enable the clamping block to engage with or disengage from the base through rotation of the clamping block.

[0012] Optionally, the base is provided with a first connecting through hole, the clamping member further comprises a connecting shaft, the connecting shaft is partially passed through the first connecting through hole and can rotate, and the connecting shaft is also connected to the clamping block; the axis of the connecting shaft constitutes the rotation axis of the clamping block;

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

[0014] An internal thread is provided on the hole wall of the first connecting through hole, and an external thread is provided on at least part of the outer side surface of the connecting shaft. The external thread of the connecting shaft cooperates with the internal thread of the first connecting through hole.

[0015] Optionally, a second connecting through hole is provided on the base, and the second connecting through hole extends along a preset direction, and the preset direction is inclined relative to the axial direction of the loading slot;

[0016] One axial end of the connecting shaft is connected to the clamping 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 clamping block to move along the preset direction, so that the clamping block is engaged with or disengaged from the base.

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

[0020] At least part of the outer side surface of the connecting shaft is provided with an external thread, the connecting shaft is partially inserted into the third connecting through hole, and the external thread of the connecting shaft matches 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 axially therethrough, and the first seat body is also provided with a first docking portion; the second seat body is provided with a second docking portion, and the second docking portion is used to cooperate with the first docking portion so that the second seat body is coaxially connected to the first seat body; the second seat body is also provided with a second loading through hole extending axially therethrough, and 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 aperture of the first hole segment gradually decreases in a direction away from the first seat body;

[0022] The clamping member is connected to one axial end of the first seat body and comprises a plurality of elastic clips, which are arranged at intervals 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 on the side away from 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 seat 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 under the action of the hole wall of the first hole segment;

[0023] The loading slot includes at least the first loading through hole and the second hole section.

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

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

[0026] The first docking portion includes an external thread arranged on the outer side surface of the connecting section, and the second docking portion includes an internal thread arranged on the hole wall of the first hole section.

[0027] Optionally, the medical accessory further includes a collimating portion, which is disposed at an end of the first base body away from the second base body, or at an end of the second base body away from the first base body, and is coaxially arranged with the loading slot and communicated with each other.

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

[0029] An anti-slip structure is also arranged on the outer surface of the base.

[0030] Compared with the prior art, the medical accessory of the present invention has the following advantages:

[0031] The aforementioned medical accessory comprises a base and a clamping member; the base is provided with a loading slot extending through the base along its axial direction; the clamping member is connected to the base and is configured to cooperate with the base to clamp a target object partially passing through the loading slot. The target object includes but is not limited to a catheter. By clamping the target object with the medical accessory, a doctor can hold the target object by pinching the medical accessory, thereby solving the problem of poor torque control performance of the target object caused by the inability to stably pinch the target object due to its small outer diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation of the present invention.

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

[0034] Figure 2 is a schematic diagram of an application scenario of a medical accessory provided according to an embodiment of the present invention, in which the medical accessory has not yet clamped a target object;

[0035] Figure 3 is a schematic diagram of an application scenario of the medical accessory provided according to the first embodiment of the present invention, showing the medical accessory clamping a target object;

[0036] Figure 4 is a schematic diagram of an application scenario of a medical accessory provided according to the first embodiment of the present invention, Figure 4 and Figure 3 The observation direction is different;

[0037] Figure 5 is a schematic structural diagram of a medical accessory provided according to Embodiment 2 of the present invention;

[0038] Figure 6 is a schematic structural diagram of a medical accessory provided according to Embodiment 2 of the present invention, Figure 6 and Figure 5 The observation direction is different;

[0039] Figure 7 is a schematic diagram of an application scenario of the medical accessory provided according to the third embodiment of the present invention, in which the clamping block has not yet clamped the target object;

[0040] Figure 8 is a schematic diagram of an application scenario of a medical accessory provided according to the third embodiment of the present invention, in which a clamping block clamps a target object;

[0041] Fig. 9 It is a structural schematic diagram of a card block of a medical accessory provided according to the third embodiment of the present invention;

[0042] Fig.10 is a schematic structural diagram of a clamping member of a medical accessory provided according to Embodiment 3 of the present invention;

[0043] Fig.11 is a structural schematic diagram of a medical accessory provided according to a fourth embodiment of the present invention, in which the first seat body and the second seat body are not connected;

[0044] Fig.12 is a schematic structural diagram of a second base body of a medical accessory provided according to a fourth embodiment of the present invention;

[0045] Fig.13is a schematic structural diagram of a second base body of a medical accessory provided according to a fourth embodiment of the present invention, Fig.13 and Fig.12 The observation direction is different;

[0046] Fig.14 is a schematic structural diagram of a medical accessory provided according to Embodiment 5 of the present invention;

[0047] Fig.15 It is a schematic structural diagram of the collimation portion of the medical auxiliary component provided according to the fifth embodiment of the present invention.

[0048] [Description of reference numerals is as follows]:

[0049] 10-medical accessory, 100-base, 101-loading slot, 102-block 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 portion, 112-seat body, 113-connecting section, 120-second seat body, 121-second docking portion, 122-second loading through hole, 1221-first hole section, 1222-second hole section, 200-clamping piece, 210-block, 211-contact surface, 212-third connecting through hole, 220-connecting shaft, 221-hexagonal groove, 230-operating part, 240-elastic clip, 300-alignment part, 310-first segment, 320-second segment, 301-alignment cavity, 20-target object. DETAILED DESCRIPTION

[0050] The following is an explanation of the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the present embodiment only illustrate the basic concept of the present invention in a schematic manner, and only the components related to the present invention are shown in the figure instead of being drawn according to the number, shape and size of the components in the actual implementation. The type, quantity and proportion of each component in the actual implementation can be a random change, and the component layout type may also be more complicated.

[0051] In addition, each embodiment of the following description has one or more technical features, but this does not mean that the user of the present invention must implement all the technical features in any embodiment at the same time, or can only implement part or all of the technical features in different embodiments separately. In other words, under the premise that implementation is possible, those skilled in the art can selectively implement part or all of the technical features in any embodiment according to the disclosure of the present invention and according to the design specifications or implementation requirements, or selectively implement a combination of part or all of the technical features in multiple embodiments, thereby increasing the flexibility of the implementation of the present invention.

[0052] As used in this specification, the singular forms "one", "an" and "the" include plural objects, and the plural form "multiple" includes more than two objects, unless the content clearly indicates otherwise. As used in this specification, the term "or" is usually used in the sense of including "and / or", unless the content clearly indicates otherwise, and the terms "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. Relational terms such as the terms "first", "second", etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor do they indicate or imply relative importance or implicitly indicate the number of technical features indicated. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] The terms "proximal end" and "distal end" mentioned in this article are described based on the relative positions and relative orientations of the various elements and components of the medical device. Although they are non-limiting, the "distal end" is the end of the medical device that first enters the patient's body during use, or the end that is closer to the patient, and the "proximal end" is the end opposite to the "distal end", which is farther away from the patient and closer to the operator than the "distal end".

[0054] Take radiofrequency ablation for the treatment of atrial fibrillation in electrophysiological surgery as an example. During the operation, after the operator delivers the catheter to the position of the pulmonary vein opening in the left atrium of the heart cavity, he needs to pinch the proximal end of the catheter with his fingers. This can maintain the position of the catheter and prevent the catheter from shifting during the cardiac cycle, causing ineffective treatment. On the other hand, it can also provide force to the catheter to press the distal end of the catheter against the target myocardium with the heartbeat interval to ensure the effectiveness and safety of the ablation. However, in the prior art, because the catheter is extremely small and the operator wears medical gloves during the operation, it is inevitable that it will come into contact with viscous liquids such as the patient's blood and contrast agents, which makes it easy for the operator to slip when pinching the catheter, thereby affecting the controllability of the catheter.

[0055] In view of this, if Figures 1 to 15 As shown, an embodiment of the present invention provides a medical accessory 10, which includes a base 100 and a clamping member 200. The base 100 is provided with a loading slot 101 extending through the base 100 along its own axial direction. The loading slot 101 is used to clamp a target object 20, which is a slender structural member, specifically a catheter or a guide wire, or other slender medical devices. The clamping member 200 is connected to the base 100 and is configured to cooperate or release the cooperation with the base 100. When the clamping member 200 cooperates with the base 100, the medical accessory 10 clamps the target object 20 partially penetrated in the loading slot 101 to prevent the target object 20 from detaching from the medical accessory 10, and when the clamping member 200 is released from the base 100, the medical accessory 10 no longer clamps the target object 20 to allow the target object 20 to detach from the medical accessory 10.

[0056] That is, the medical accessory 10 is mounted on the target object 20, specifically, on the proximal end of the target object 20, through the loading slot 101, and the proximal end of the target object 20 and the medical accessory 10 are relatively fixed through the cooperation of the base 100 and the clamping member 200. Thus, the operator can hold the proximal end of the target object 20 by holding the medical accessory 10 during the operation. The outer diameter of the base 100 can be designed to be larger to facilitate the operator to hold the target object 20 stably, thereby avoiding the problem of the target object 20 being unable to stably and effectively hold the target object 20, which causes the torsion controllability of the target object 20 to decrease.

[0057] In addition, the medical accessory 10 repeatedly clamps the target object 20, so that the operator can adjust the clamping position of the medical accessory 10 on the target object 20 as needed to adapt to different patients' needs for the target object 20.

[0058] In order to make the purpose, advantages and features of the present invention more clear, the present invention is further described in detail below in combination with several embodiments. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the drawings represent the same or similar components.

[0059] <Example 1>

[0060] Figure 1 FIG. 1 is a schematic diagram showing the structure of the medical accessory provided in this embodiment. Figures 2 to 5 FIG. 2 shows a schematic diagram of the structure of the medical accessory provided in this embodiment. Figures 1 to 5 As shown, in this embodiment, the base 100 is further provided with a block groove 102, the block groove 102 is located at the periphery of the loading groove 101, and is also communicated with the loading groove 101. The clamping member 200 includes a block 210, the block 210 is at least partially disposed in the block groove 102, and is movably connected to the base 100. The medical accessory 10 is configured to make the block 210 engage or disengage with the base 100 by moving the block 210 relative to the base 100.

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

[0062] In this embodiment, the block 210 is rotatably connected to the base 100, and the axis of rotation of the block 210 intersects or is not in the same plane with the axis of the loading slot 101. In this way, by controlling the block 210 to rotate around its axis of rotation along the first direction, the block 210 can be rotated to a point where it is partially located in the loading slot 101 and pressed against the target 20. When the block 210 is continuously rotated along the first direction, or when the block 210 is rotated along the second direction, the block 210 can be moved away from the target 20 to release the pressure on the target 20. It can be understood that one of the first direction and the second direction here is a clockwise direction and the other is a counterclockwise direction. In addition, the axis of rotation of the block 210 can be perpendicular to the axis of the loading slot 101.

[0063] Optionally, the block slot 102 may also extend to the outer side of the base 100 to form an opening (not marked in the figure) on the outer side of the base 100, and the block slot 102 and the loading slot 101 are both connected to the outside of the base 100 through the opening. In this way, it is convenient to assemble the block 210, and it is also convenient to partially pass the target object 20 through the loading slot 101.

[0064] It can be understood that the clamping member 200 further includes a connecting shaft 220, and the clamping 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 is partially inserted into the first connecting through hole 103 and can rotate. The connecting shaft 220 is also connected to the clamping block 210 so that the two rotate synchronously, so that the axis of the connecting shaft 220 constitutes the rotation axis of the clamping block 210.

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

[0066] Preferably, the surface of the clamping block 210 facing the loading slot 101 is at least partially formed into a contact surface 211, and the contact surface 211 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 such a setting is that when the clamping block 210 rotates at different angles along the first direction, the distance from the axis of the loading slot 101 to the contact surface 211 is different, which allows the contact surface 211 to contact the target objects 20 with different outer diameters, thereby allowing the same medical accessory 10 to be applicable to the target objects 20 with different outer diameters, thereby improving the application range of the same medical accessory 10.

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

[0068] The cross section of the base 100 is circular, elliptical or polygonal. Optionally, an anti-slip structure 104 ( Figures 1 to 5 Not shown, please refer to Figure 6 , Figure 7 , Figure 8 , Fig.11 , Fig.12 , Fig.14).

[0069] Optionally, the base 100 further includes a proximal portion 106, and the outer diameter of the proximal portion 106 decreases in the direction from the distal end to the proximal end. It should be noted that when the cross section of the base 100 is an ellipse, the outer diameter of the proximal portion 106 refers to the size of the major axis of the cross section of the base 100, and when the cross section of the base 100 is a polygon, the outer diameter of the proximal portion 106 refers to the diameter of the circumscribed circle of the cross section of the base 100.

[0070] In addition, in this embodiment, the base 100 can be made of any suitable material, such as a metal material or a polymer material. The optional metal material is, for example, stainless steel, and the optional polymer material is, for example, polyetheretherketone (PEEK) or a resin material. The block 210 can also be made of any suitable material, and the optional materials include but are not limited to any one of metal materials and polymer materials, but preferably a polymer material. The connecting shaft 220 is a cylindrical structure and can be made of a polymer material or a metal material. From the perspective of strength, it is preferably made of a metal material such as stainless steel.

[0071] <Example 2>

[0072] Figure 5 and Figure 6 FIG. 1 is a schematic diagram showing the structure of the medical accessory 10 provided in this embodiment. Figure 5 and Figure 6 As shown, the difference between this embodiment and the first embodiment is that an internal thread is provided on the hole wall of the first connecting through hole 103, and an external thread is provided on at least part of the outer side surface of the connecting shaft 220, and the external thread on the connecting shaft 220 cooperates with the internal thread on the hole wall of the first connecting through hole 103. The effect of this arrangement is that after the clamping block 210 is pressed against the target object 20, the operator needs to use a larger force to rotate the clamping block 210 again to move away from the target object 20, thereby reducing the possibility that the clamping block 210 rotates in an unexpected situation and moves in a direction away from the target object 20 due to the operator's accidental contact during the operation, causing the target object 20 to be released.

[0073] Optionally, a hexagonal groove 221 is further provided on the end surface of the connecting shaft 220 facing the outside of the base 100 to facilitate the operator to use a hexagonal wrench to rotate the connecting shaft 220.

[0074] In addition, it can be understood that when the connecting shaft 220 and the clamping block 210 rotate, the connecting shaft 220 and the clamping block 210 also move along the axial direction of the connecting shaft 220 .

[0075] <Example 3>

[0076] Figure 7 and Figure 8 FIG. 1 is a schematic diagram showing the structure of the medical accessory 10 provided in this embodiment. Figure 7 and Figure 8 As shown, the difference between this embodiment and the first embodiment is that the connection method between the base 100 and the 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, and the preset direction is inclined relative to the axial direction of the loading slot 101. One axial end of the connecting shaft 220 is connected to the 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 for receiving external force. The size of the connecting shaft 220 in the preset direction is smaller than the size 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 force.

[0078] The medical accessory 10 is configured to move the block 210 along the preset direction by moving the connecting shaft 220 along the preset direction, thereby making the block 210 engage or disengage with the base 100. Specifically, when the connecting shaft 220 drives the block 210 along the preset direction and in the direction close to the axis of the loading slot 101 (e.g. Figure 7 and Figure 8 When the connecting shaft 220 drives the block 210 to move along the preset direction and in the direction away from the axis of the loading slot 101 (as shown by the arrow S1 in the figure), the block 210 can be moved to a position where it is partially located in the loading slot 101 and pressed against the target object 20; when the connecting shaft 220 drives the block 210 to move along the preset direction and in the direction away from the axis of the loading slot 101 (as shown by the arrow S1 in the figure), the block 210 can be moved to a position where it is partially located in the loading slot 101 and pressed against the target object 20; Figure 7 and Figure 8 When the clamping block 210 moves (as indicated by the arrow S2 in FIG. 1 ), the clamping block 210 can be moved 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 a direction along the preset direction and close to the axis of the loading slot 101, and the second direction refers to a direction along the preset direction and away from the axis of the loading slot 101.

[0079] For further information, please refer to Fig. 9, a third connecting through hole 212 is provided on the block 210, and an internal thread is provided on the hole wall of the third connecting through hole 212. An external thread (not shown in the figure) is provided on at least part of the outer side surface of the connecting shaft 220. The connecting shaft 220 is partially penetrated into the third connecting through hole 212, and the external thread on the connecting shaft 220 cooperates with the internal thread on the third connecting through hole 212 to perform spiral transmission. After the pressing block 210 is pressed 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 still, so that the end of the connecting shaft 220 located in the base 100 extends out from the third connecting through hole 212 (as shown in the figure). Fig.10 The connecting shaft 220 is locked by the friction between the connecting shaft 220 and the inner wall of the base 100, so as to reduce the possibility that the connecting member 220 will move in the preset direction along the axis away from the loading slot 101 in an unexpected manner due to accidental contact by the surgeon during the operation, thereby reducing the possibility that the target object 20 will be released.

[0080] It can be understood that when it is necessary to release the target object 20, the operator should first control the rotation of the connecting shaft 220 while keeping the pressing block 210 and the target object 20 relatively still, so that the 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 preset direction along the axis away from the loading slot 101.

[0081] In addition, from the perspective of facilitating the operator to apply force to the connecting shaft 220, it is preferred that an operating portion 230 is further provided on one end of the connecting shaft 220 located outside the base 100, and the operating portion 230 is, for example, a nut. The operating portion 230 can be made of a metal material or a polymer material. From the perspective of manufacturing cost, the operating portion 230 is preferably made of a polymer material.

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

[0083] In addition, in this embodiment, return to reference Figure 7 and Figure 8The base 100 includes the proximal portion 106, the main body 107 and the distal portion 108 connected in sequence from the proximal end to the distal end. The outer diameter of the proximal portion 106 gradually decreases from the distal end to the proximal end. The outer diameter of the main body 107 can be kept constant, and the outer diameter of the distal portion 108 gradually decreases from the proximal end to the distal end. The second connecting through hole 105 can be at least partially disposed on the main body 107, for example, Figure 7 and Figure 8 As shown in the figure, most of it is arranged on the main body 107, and a small part is arranged on the proximal end 106; of course, in an alternative example, the second connecting through hole can also be mostly arranged on the main body, a small part is arranged on the distal end ((not shown in the figure), or all is arranged on the main body ((not shown in the figure).

[0084] <Example 4>

[0085] Fig.11 1 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 base bodies, and the clamping member 200 is connected to one of the base bodies and is matched or released with the other base body. For the convenience of description, in this embodiment, the base body connected to the clamping member 200 is called the first base body 110, and the other base body is called the second base body 120.

[0086] Continue to refer Fig.11 Combined with Fig.12 and Fig.13 , the first seat body 110 is provided with a first loading through hole (not shown in the figure) extending through along its own axial direction. The first seat body 110 is also provided with a first docking portion 111. The second seat body 120 is provided with a second docking portion 121, and the second docking portion 121 is used to cooperate with the first docking portion 111 so that the second seat body 120 is coaxially connected to the first seat body 110. The second seat body 120 is also provided with a second loading through hole 122 extending through along its axial direction, and the second loading through hole 122 includes a first hole section 1221 and a second hole section 1222 that are coaxially connected. When the second seat body 120 is connected to the first seat body 110, the first hole section 1221 is closer to the first seat body 110 than the second hole section 1222, and the first hole section 1221 is a tapered hole whose aperture gradually decreases in the direction away from the first seat body 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. The elastic clips 240 all extend along the axial direction of 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 a direction away from the first base 110. In other words, the clamping member 200 is a tapered structure as a whole, and its outer diameter gradually decreases in a 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 a radially inward extrusion 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, so that the distance from other parts of the elastic clip 240 except the connection point between the elastic clip 240 and the first seat body 110 to the axis of the first loading through hole is reduced.

[0089] The use process of the medical accessory 10 provided in this embodiment includes: first, placing the target object (( Figures 11 to 13 The first loading through hole 122 is partially penetrated by the first loading through hole, the space enclosed by the plurality of elastic clips 240, and the second loading through hole 122, and the first hole section 1221 is closer to the first seat body 110 than the second hole section 1222; then, the clamping member 200 is at least partially inserted into the first hole section 1221 of the second loading through hole 122. During this process, the hole wall of the first hole section 1221 applies a radially inward extrusion force to the elastic clip 240 along the first loading through hole, so that the free end of the elastic clip 240 moves in a direction close to the axis of the first loading through hole, thereby making the clamping member 200 clamp the target object 20. Finally, the first seat body 110 and the second seat body 120 are connected by the cooperation of the first docking portion 111 and the second docking portion 121, so that the clamping member 200 remains in a state of clamping the target object 20.

[0090] It can be understood that after the first base body 110 and the second base body 120 are connected, the first hole section 1221 is at least partially occupied by the clamping member 200. Figures 11 to 13 (not marked) includes at least the first loading through hole and the second hole section 1222.

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

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

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

[0094] <Example 5>

[0095] Fig.14 FIG. 1 is a schematic diagram showing the structure of the medical accessory 10 provided in this embodiment. Fig.14 As shown, the medical accessory 10 of this embodiment is different from the fourth embodiment in that it further includes a collimating portion 300, which is arranged at one end of the first base body 110 away from the second base body 120, or at one end of the second base body 120 away from the first base body 110, which is specifically determined according to the relative orientation of the first base body 110 and the second base body 120. For example, during the normal use of the medical accessory 10, when the first base body 110 is at least partially located at the proximal side of the second base body 120, the collimating portion 300 is arranged at one end of the second base body 120 away from the first base body 110. Alternatively, during the normal use of the medical accessory 10, when the first base body 110 is at least partially located at the distal side of the second base body 120, the collimating portion 300 is arranged at one end of the first base body 110 away from the second base body 120.

[0096] It can be understood that the collimating portion 300 has a collimating cavity 301 (such as Fig.15 As shown in FIG. 1 , the collimating cavity 301 is coaxially arranged with the loading slot 101 and communicates with each other. When used, the target object 20 is also partially disposed in the collimating cavity 301 .

[0097] The collimating portion 300 preferably includes a first segment 310 and a second segment 320 that are coaxially connected, wherein 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] The advantage of providing the collimating portion 300 is that it makes it easier to operate the target object when it enters the sheath tube. Another advantage is that it can effectively prevent the target object from being damaged by the sheathing operation. Another advantage is that it can further improve the operator's controllability of the target object during the operation, thereby improving the positioning and safety of the target object.

[0099] Although the present invention is disclosed as above, it is not limited thereto. Those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A medical accessory, characterized in that: It comprises a base and a clamping member; the base is provided with a loading slot extending axially therethrough; the clamping member is connected to the base and is configured to selectively cooperate with the base to clamp a target object partially passing through the loading slot or to release the target object by disengaging from the base.

2. The medical accessory according to claim 1, characterized in that: The base is also provided with a block groove, which is located at the outer periphery of the loading groove and is also communicated with the loading groove; The clamping member comprises a clamping block, which is at least partially disposed in the clamping block groove and movably connected to the base; The medical accessory is configured to enable the clamping block to be engaged with or disengaged from the base by moving the clamping block relative to the base.

3. The medical accessory according to claim 2, characterized in that: The clamping member comprises a connecting shaft, and the clamping block is connected to the base via the connecting shaft; the surface of the clamping block facing the loading slot is at least partially formed as a contact surface, and the contact surface is inclined relative to the axial direction of the connecting shaft.

4. The medical accessory according to claim 2, characterized in that: The clamping block is rotatably connected to the base, and the rotation axis of the clamping block intersects or is not aligned with the axis of the loading slot; The medical accessory is configured to enable the clamping block to engage with or disengage from the base through rotation of the clamping block.

5. The medical accessory according to claim 4, characterized in that: The base is provided with a first connecting through hole, and the clamping member further comprises a connecting shaft, the connecting shaft is partially passed through the first connecting through hole and can rotate, and the connecting shaft is also connected to the clamping block; the axis of the connecting shaft constitutes the rotation axis of the clamping block; At least one of the hole wall of the first connecting through hole and the outer side surface of the connecting shaft is a smooth surface; or, An internal thread is provided on the hole wall of the first connecting through hole, and an external thread is provided on at least part of the outer side surface of the connecting shaft. The external thread of the connecting shaft cooperates with the internal thread of the first connecting through hole.

6. The medical accessory according to claim 2, characterized in that: The base is provided with a second connecting through hole, the second connecting through hole extends along a preset direction, and the preset direction is inclined relative to the axial direction of the loading slot; One axial end of the connecting shaft is connected to the clamping 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; 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 clamping block to move along the preset direction, so that the clamping block is engaged with or disengaged from the base.

7. The medical accessory according to claim 6, characterized in that: The clamping block is provided with a third connecting through hole, and the hole wall of the third connecting through hole is provided with an internal thread; At least part of the outer side surface of the connecting shaft is provided with an external thread, the connecting shaft is partially inserted into the third connecting through hole, and the external thread of the connecting shaft matches the internal thread of the third connecting through hole.

8. The medical accessory according to claim 1, characterized in that: 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 axially therethrough, and the first seat body is also provided with a first docking portion; the second seat body is provided with a second docking portion, and the second docking portion is used to cooperate with the first docking portion so that the second seat body is coaxially connected to the first seat body; the second seat body is also provided with a second loading through hole extending axially therethrough, and 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 aperture of the first hole segment gradually decreases in a direction away from the first seat body; The clamping member is connected to one axial end of the first seat body and comprises a plurality of elastic clips, which are arranged at intervals 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 on the side away from 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 seat 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 under the action of the hole wall of the first hole segment; The loading slot includes at least the first loading through hole and the second hole section.

9. The medical accessory according to claim 8, characterized in that: The first seat body comprises a seat body and a connecting section which are axially connected, and the outer diameter of the connecting section is smaller than the outer diameter of the seat body; The clamping member is connected to an end of the connecting section away from the seat body; The first docking portion includes an external thread arranged on the outer side surface of the connecting section, and the second docking portion includes an internal thread arranged on the hole wall of the first hole section.

10. The medical accessory according to claim 8, characterized in that: The medical accessory further includes a collimating portion, which is disposed at one end of the first seat body away from the second seat body, or at one end of the second seat body away from the first seat body, and is coaxially arranged with the loading slot and communicated with each other.

11. The medical accessory according to any one of claims 1 to 10, characterized in that: The base comprises a proximal portion, the outer diameter of which gradually decreases from the distal end to the proximal end; and / or, An anti-slip structure is also arranged on the outer surface of the base.

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