A guide wire automatic transfer mechanism

Abstract

The application discloses a guide wire automatic transmission mechanism, which comprises a shell, an elastic sleeve sleeved on the guide wire, a clamping device arranged outside the elastic sleeve and detachably arranged in the shell, the clamping device being used for clamping and releasing the elastic sleeve, an axial transmission device detachably connected with the shell and used for driving the shell to move along the axial direction relative to the guide wire, the elastic sleeve clamping the guide wire to drive the guide wire to move when the clamping device clamps the elastic sleeve, and the elastic sleeve being in clearance fit with the guide wire and being axially movable relative to the guide wire under the driving of the clamping device when the clamping device releases the elastic sleeve. The guide wire can be relatively stationary between the elastic sleeve and the guide wire when the guide wire is transmitted forward, the elastic sleeve is in clearance fit with the guide wire when the elastic sleeve moves backward along the axial direction, the contact area is reduced, the friction force on the surface of the guide wire is reduced, and the surface coating of the guide wire is not damaged in the process of transmitting the guide wire forward or the process of moving the elastic sleeve backward relative to the guide wire.

Description

Technical Field

[0001] This invention relates to the field of wire conveying equipment technology, and in particular to an automatic wire conveying mechanism. Background Technology

[0002] In existing technologies, vascular interventional robots use a set of symmetrical friction wheels to deliver guidewires. Specifically, the guidewire is passed through a set of symmetrical friction wheels, and the friction wheels are driven to rotate, simulating the action of twisting the guidewire by a human hand, thereby achieving the task of delivering the guidewire.

[0003] Although the above method achieves the transfer of the guidewire, there is relative motion between the friction wheel and the guidewire during the transfer process. The friction wheel constantly rubs against the guidewire, which damages the coating on the guidewire surface and increases the friction between the guidewire and the catheter. In addition, the guidewire itself is flexible, which may eventually cause the feeding process to be blocked at a certain position.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automatic guidewire transfer mechanism to address the above-mentioned defects of the prior art, which aims to solve the problem of high friction and easy damage to the guidewire surface during guidewire transfer in the prior art.

[0006] The technical solution adopted by this invention to solve the technical problem is as follows:

[0007] An automatic guidewire transfer mechanism, comprising:

[0008] shell;

[0009] An elastic sleeve is fitted onto the guidewire;

[0010] A clamping device is disposed outside the elastic sleeve and detachably disposed inside the housing; the clamping device is used to clamp and release the elastic sleeve.

[0011] An axial transmission device is detachably connected to the housing and is used to drive the housing to move axially relative to the guide wire;

[0012] When the clamping device clamps the elastic sleeve, the elastic sleeve clamps the guide wire to drive the guide wire to move; when the clamping device releases the elastic sleeve, the elastic sleeve and the guide wire are in clearance fit, and the elastic sleeve can move axially relative to the guide wire under the drive of the clamping device.

[0013] The automatic guidewire transfer mechanism, wherein the clamping device includes:

[0014] The clamping member has a receiving cavity, and one axial end has an opening, while the other axial end has a guide wire through hole; the elastic sleeve is located inside the receiving cavity;

[0015] The clip support has one end located inside the receiving cavity and the other end extending from the opening to the outside of the clamping member;

[0016] A drive element is detachably mounted on the clamping bracket; the drive element is used to drive the clamping bracket to move axially relative to the clamping member to clamp and release the elastic clamp.

[0017] The automatic guide wire transfer mechanism includes a receiving groove provided at the axial end of the jacket support near the elastic jacket, a portion of the elastic jacket being located within the receiving groove and movable axially relative to the receiving groove.

[0018] The automatic guide wire transfer mechanism includes a first conical surface at the opening of the receiving groove and a second conical surface on the elastic sleeve, the second conical surface cooperating with the first conical surface; the small-diameter end of the first conical surface is away from the clamping member, and the large-diameter end of the first conical surface is close to the clamping member.

[0019] The automatic guidewire transfer mechanism further includes:

[0020] The first limiting member is sleeved on the clip bracket and located at one end of the clip bracket near the elastic clip.

[0021] The second limiting member is sleeved on the jacket bracket and located on the side of the first limiting member away from the elastic jacket; the jacket bracket can move axially relative to the second limiting member.

[0022] An elastic element is sleeved on the jacket bracket; the two ends of the elastic element abut against the first limiting element and the second limiting element, respectively.

[0023] The automatic guidewire transfer mechanism, wherein the driving component includes:

[0024] A push-pull frame; the push-pull frame is provided with a mounting position, and the jacket bracket is arranged within the mounting position;

[0025] A driver, connected to the push-pull bracket, is used to drive the push-pull bracket to move axially relative to the clamping member, thereby moving the clamping bracket.

[0026] The automatic guidewire transfer mechanism further includes:

[0027] A retaining ring is fitted onto the clamping bracket and located at the end of the clamping bracket away from the clamping member;

[0028] The push-pull bracket is located on the side of the fixing ring near the clamping member and is in contact with the fixing ring.

[0029] The automatic guidewire transfer mechanism further includes:

[0030] A guide wire rotation device is disposed inside the housing and connected to the clamping device, so as to drive the guide wire to rotate by driving the clamping device to rotate.

[0031] The automatic guidewire transfer mechanism, wherein the guidewire rotation device includes:

[0032] Rotary drive component;

[0033] A drive gear is connected to the rotary drive member to rotate under the drive of the rotary drive member;

[0034] The driven gear is sleeved on the clamping device and meshes with the driving gear.

[0035] The automatic guidewire transfer mechanism, wherein the housing comprises:

[0036] case;

[0037] Top cover; one end of the top cover is rotatably connected to the housing, and the other end is engaged with the housing.

[0038] Beneficial effects: In this invention, the force is transmitted through the axial transmission device, the outer shell, the clamping device, and the elastic sleeve, and the guide wire is automatically transmitted through the clamping and releasing of the elastic sleeve. Simultaneously, when the guide wire is transmitted forward, the elastic sleeve and the guide wire are in a relatively stationary state, similar to pinching the guide wire with fingers. When the elastic sleeve moves axially backward, the gap between the elastic sleeve and the guide wire reduces the contact area, thus greatly reducing the friction on the guide wire surface both during forward transmission and during the backward movement of the elastic sleeve relative to the guide wire, effectively reducing damage to the guide wire surface coating. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of the automatic guidewire transfer mechanism described in this invention;

[0040] Figure 2 This is a schematic diagram of the overall structure of the automatic guide wire transfer mechanism when the top cover is opened, as described in this invention.

[0041] Figure 3 This is a first view of the internal structure of the automatic guidewire transfer mechanism described in this invention;

[0042] Figure 4This is a second view of the internal structure of the automatic guidewire transfer mechanism described in this invention;

[0043] Figure 5 This is a schematic diagram of the disassembled structure of the clamping member, the driven gear, and the jacket support described in this invention;

[0044] Figure 6 This is an exploded structural diagram of the clamping device described in this invention;

[0045] Figure 7 This is a schematic diagram of the structure of the elastic jacket described in this invention;

[0046] Figure 8 This is a schematic diagram of the structure of the second limiting member in this invention;

[0047] Figure 9 This is a schematic diagram of the assembly structure of the elastic element and the jacket bracket in this invention. Detailed Implementation

[0048] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0049] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0050] This invention provides an automatic guidewire transfer mechanism, such as... Figure 1 and Figure 2 As shown, the automatic guide wire transfer mechanism includes a housing 1 and an elastic sleeve 2 (e.g., ...). Figure 5 and Figure 6 As shown in the figure), the clamping device 3 and the axial transmission device (not shown in the figure); the elastic sleeve 2 and the clamping device 3 are both located inside the outer shell 1, and the axial transmission device is located outside the outer shell 1.

[0051] The elastic sleeve 2 is sleeved on the guide wire; the clamping device 3 is arranged outside the elastic sleeve 2 and detachably disposed inside the housing 1; the clamping device 3 is used to clamp and release the elastic sleeve 2; the axial transmission device is detachably connected to the housing 1 and is used to drive the housing 1 to move axially relative to the guide wire. When the clamping device 3 clamps the elastic sleeve 2, the elastic sleeve 2 clamps the guide wire to drive the guide wire to move; when the clamping device 3 releases the elastic sleeve 2, the elastic sleeve 2 is in clearance fit with the guide wire and can move axially relative to the guide wire under the drive of the clamping device 3.

[0052] Specifically, when the clamping device 3 releases the elastic sleeve 2, creating a gap between the elastic sleeve 2 and the guide wire, relative movement between them is possible. Since the outer shell 1 encloses the clamping device 3, and the clamping device 3 encloses the elastic sleeve 2, when the elastic sleeve 2 is in the released state, the axial transmission device is activated. The force released by the axial transmission device is transmitted to the elastic sleeve 2 through the outer shell 1 and the clamping device 3. Thus, driven by the axial transmission device, the outer shell 1 drives the elastic sleeve 2 to move axially relative to the guide wire through the clamping device 3.

[0053] When the clamping device 3 clamps the elastic sleeve 2, so that the elastic sleeve 2 is in a clamped state, the elastic sleeve 2 and the guide wire are tightly fitted, so that the elastic sleeve 2 and the guide wire become a whole, and can only move synchronously, but cannot generate relative movement; at this time, the axial transmission device is activated, and the force released by the axial transmission device is transmitted to the elastic sleeve 2 through the housing 1 and the clamping device 3. Thus, under the drive of the axial transmission device, the housing 1 drives the guide wire to move axially through the clamping device 3 and the elastic sleeve 2, thereby realizing the transmission of the guide wire.

[0054] Therefore, in this invention, the elastic sleeve 2 is clamped by the clamping device 3. When the elastic sleeve 2 clamps the guide wire, the axial transmission device is activated, which clamps the guide wire and transmits it forward. When the elastic sleeve 2 releases the guide wire by the clamping device 3, the axial transmission device is activated, which drives the elastic sleeve 2 to move in the opposite axial direction relative to the guide wire and then clamps the guide wire again. This process is repeated to continuously transmit the guide wire forward.

[0055] As can be seen, in this invention, the force is transmitted through the axial transmission device, the outer shell 1, the clamping device 3, and the elastic sleeve 2, and the guide wire is automatically transmitted through the clamping and releasing of the elastic sleeve 2. At the same time, when the guide wire is transmitted forward, the elastic sleeve 2 and the guide wire form a relatively stationary state, similar to pinching the guide wire with fingers to transmit it forward. When the elastic sleeve 2 moves axially backward, the elastic sleeve 2 and the guide wire are fitted with a gap, which reduces the contact area. This greatly reduces the friction on the guide wire surface, effectively reducing damage to the guide wire surface coating, both during the forward transmission of the guide wire and during the backward movement of the elastic sleeve 2 relative to the guide wire.

[0056] like Figure 3 As shown, the clamping device 3 includes a clamping member 31, a clamping bracket 32, and a driving member 33. The clamping member 31 has a receiving cavity, and one axial end of the clamping member 31 has an opening, while the other axial end has a guide wire through hole. The opening and the guide wire through hole communicate with the receiving cavity from both axial ends, and the guide wire through hole allows only the guide wire to pass through. The opening is adapted to the clamping bracket 32, and the guide wire through hole allows the guide wire to pass through.

[0057] The elastic sleeve 2 is located inside the receiving cavity; one end of the sleeve support 32 is located inside the receiving cavity, and the other end of the sleeve support 32 extends from the opening to the outside of the clamping member 31; the driving member 33 is detachably disposed on the sleeve support 32; the driving member 33 is used to drive the sleeve support 32 to move axially relative to the clamping member 31 to clamp and release the elastic sleeve 2.

[0058] Specifically, the two ends of the elastic sleeve 2 are respectively limited by the clamping member 31 and the sleeve bracket 32, so that when the outer shell 1 moves along the axial direction, the elastic sleeve 2 can move synchronously along the axial direction with the outer shell 1 under the limiting action of the clamping member 31 and the sleeve bracket 32, thereby realizing the transmission of the guide wire. The driving component 33 and the clamping bracket 32 ​​are connected. When the driving component 33 is activated, the clamping bracket 32 ​​moves axially relative to the clamping component 31, thereby moving away from and closer to the clamping component 31. When the clamping bracket 32 ​​moves axially away from the clamping component 31, the force between the clamping bracket 32 ​​and the clamping component 31 that clamps the elastic clamp 2 decreases, and the elastic clamp 2 can be adjusted to a relaxed state. Then, the elastic clamp 2 can move axially relative to the guide wire under the drive of the outer shell 1. When the clamping bracket 32 ​​moves axially and approaches the clamping component 31, the force between the clamping bracket 32 ​​and the clamping component 31 that clamps the elastic clamp 2 increases, and the elastic clamp 2 can be adjusted to a clamped state. Then, the elastic clamp 2 can drive the guide wire to move forward synchronously along the axial direction under the drive of the outer shell 1.

[0059] One embodiment of the present invention, such as Figure 9 As shown, the jacket support 32 is provided with a receiving groove 321 near the axial end of the elastic jacket 2. A portion of the elastic jacket 2 is located in the receiving groove 321 and can move axially relative to the receiving groove 321.

[0060] In this embodiment, a portion of the elastic sleeve 2 is limited by the receiving groove 321, which increases the interference relationship between the elastic sleeve 2 and the sleeve support 32. This allows the elastic sleeve 2 to maintain its current horizontal position and not fall when the sleeve support 32 moves away from the clamping member 31 along the axial direction, thereby ensuring that the elastic sleeve 2 can be clamped when the sleeve support 32 approaches the clamping member 31 next time.

[0061] Specifically, such as Figure 6 and Figure 7 As shown, the elastic sleeve 2 includes a sleeve head 21 and a guide post 22. The sleeve head 21 is located within the receiving cavity, and the guide post 22 is located within the receiving groove 321 and can move axially relative to the receiving groove 321. The sleeve head 21 is used to clamp and release the guide wire. The guide post 22 is coaxially arranged with the receiving groove 321 and the receiving cavity. Through the interference of the receiving groove 321 on the guide post 22, when the sleeve support 32 moves away from the clamping member 31, the sleeve head 21 can maintain its current horizontal position under the supporting force of the guide post 22, ensuring that the sleeve support 32 can accurately clamp the sleeve head 21 after resetting and moving closer to the clamping member 31.

[0062] One implementation method in this embodiment, such as Figure 9 As shown, the opening of the receiving groove 321 is provided with a first conical surface 3211, such as... Figure 7 As shown, the elastic sleeve 2 is provided with a second conical surface 20, which cooperates with the first conical surface 3211; the small diameter end of the first conical surface 3211 is away from the clamping member 31, and the large diameter end of the first conical surface 3211 is close to the clamping member 31.

[0063] In this embodiment, the cooperation between the first conical surface 3211 and the second conical surface 20 allows the elastic sleeve 2 to receive radial extrusion force when the sleeve bracket 32 ​​approaches the clamping member 31 and squeezes the elastic sleeve 2, thereby clamping the guide wire and fixing it. When the sleeve bracket 32 ​​moves away from the clamping member 31, the radial extrusion force on the elastic sleeve 2 is reduced, the pressure on the guide wire is reduced, and the guide wire is released.

[0064] like Figure 5 and Figure 6 As shown, the automatic guide wire transfer mechanism further includes a first limiting member 4, a second limiting member 5, and an elastic member 6; the first limiting member 4 is sleeved on the clip bracket 32 ​​and located at one end of the clip bracket 32 ​​near the elastic clip 2; the second limiting member 5 is sleeved on the clip bracket 32 ​​and located on the side of the first limiting member 4 away from the elastic clip 2; the clip bracket 32 ​​can move axially relative to the second limiting member 5; the elastic member 6 is sleeved on the clip bracket 32; the two ends of the elastic member 6 respectively abut against the first limiting member 4 and the second limiting member 5.

[0065] Specifically, the elastic element 6 can be a spring, and the first limiting member 4 and the clamping bracket 32 ​​are integrally formed. The two ends of the elastic element 6 are respectively positioned by the first limiting member 4 and the second limiting member 5, allowing the elastic element 6 to elastically expand and contract along the axial direction of the clamping bracket 32. The second limiting member 5 is inserted into the clamping member 31, and the first limiting member 4 is positioned by the outer shell 1, so that when the clamping bracket 32 ​​moves axially, both the second limiting member 5 and the clamping member 31 remain stationary. When a force is applied to the clamping bracket 32 ​​to move it away from the clamping member 31, the first limiting member 4 moves towards the second limiting member 5 and compresses the elastic element 6, thereby releasing the elastic clamping 2. When the force applied to the clamping bracket 32 ​​is removed, the first limiting member 4 automatically resets under the elastic force of the elastic element 6 restoring its elastic deformation.

[0066] like Figure 8As shown, the second limiting member 5 has a plug-in interface 51 at one end near the clamping member 31. The clamping member 31 is partially inserted into the plug-in interface 51, thereby realizing the plug-in engagement between the second limiting member 5 and the clamping member 31. A first engagement position 101 is provided inside the outer shell 1 (e.g., Figure 5 and Figure 6 (as shown) and second card position 102 (as shown) Figure 6 As shown, the clamping member 31 is located within the first engaging position 101, and the second limiting member 5 is located within the second engaging position 102. When the driving member 33 drives the sleeve support 32 to move axially, the clamping member 31 is positioned by the first engaging position 101, and the second limiting member 5 is positioned by the second engaging position 102 and the clamping member 31, ensuring that the sleeve support 32 can move axially relative to the second limiting member 5 and the clamping member 31 simultaneously, thereby realizing the clamping and releasing of the guide wire by the elastic sleeve 2.

[0067] In one embodiment of the present invention, in the initial state where no force is applied to the clamping bracket 32, the elastic member 6 is in a compressed state, and the elastic member 6 pushes against the first limiting member 4 towards the clamping member 31, thereby causing the clamping bracket 32 ​​to generate a pre-tightening force on the elastic clamp 2, and the elastic clamp 2 remains in the state of clamping the guide wire. Therefore, when the driving member 33 and the axial transmission device are not activated, the elastic clamp 2 is in the state of clamping the guide wire, and the automatic guide wire transmission mechanism is locked on the guide wire and cannot move axially.

[0068] The driving component 33 includes a push-pull bracket 331 (such as...). Figure 4 , Figure 5 and Figure 6 (as shown) and driver 332 (as shown) Figure 3 (as shown); the push-pull bracket 331 is disposed inside the outer casing 1, and the push-pull bracket 331 is provided with a mounting position 3311 (as shown). Figure 6 As shown, the clamping bracket 32 ​​is arranged in the mounting position 3311; the driver 332 is connected to the push-pull bracket 331 and is used to drive the push-pull bracket 331 to move axially relative to the clamping member 31, so as to drive the clamping bracket 32 ​​to move.

[0069] Specifically, the mounting position 3311 is used to position the clamping bracket 32 ​​so that when the driving member 33 is activated, the push-pull bracket 331 can drive the clamping bracket 32 ​​to move axially. The push-pull bracket 331 is located at the end of the clamping bracket 32 ​​away from the clamping member 31, thereby preventing the pushing and pulling movement of the push-pull bracket 331 from being interfered with by the second limiting member 5 and the clamping member 31.

[0070] In one embodiment of the present invention, the automatic guide wire transfer mechanism further includes a fixing ring 7 (e.g., Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 (as shown); the fixing ring 7 is sleeved on the clamping bracket 32 ​​and is located at the end of the clamping bracket 32 ​​away from the clamping member 31; the push-pull bracket 331 is located on the side of the fixing ring 7 close to the clamping member 31 and is in contact with the fixing ring 7.

[0071] Specifically, the fixing ring 7 cooperates with the push-pull bracket 331 to increase the positioning effect between the push-pull bracket 331 and the clamping bracket 32, so that when the push-pull bracket 331 pushes the clamping bracket 32 ​​away from the clamping member 31 to release the elastic clamp 2, only the fixing ring 7 needs to be forced; when the driving member 33 closes and resets, the push-pull bracket 331 resets with the driving shaft of the driving member 33, the elastic member 6 restores its elastic deformation, and the first limiting member 4 drives the clamping bracket 32 ​​to reset and squeeze the elastic clamp 2, thereby driving the fixing ring 7 to reset.

[0072] In this embodiment, a fixing ring 7 is added to the clip bracket 32, and the clip bracket 32 ​​releases the movement of the elastic clip 2 by cooperating with the push-pull frame 331 through the fixing ring 7. Under the premise that the push-pull frame 331 and the clip bracket 32 ​​are positioned together, the interference between the push-pull frame 331 and the fixing ring 7 is increased, so that the cooperation between the push-pull frame 331 and the clip bracket 32 ​​is more stable.

[0073] like Figure 1 As shown, the automatic guide wire transfer mechanism also includes a guide wire rotation device 8, which is disposed inside the housing 1 and connected to the clamping device 3, so as to drive the guide wire to rotate by driving the clamping device 3 to rotate.

[0074] Specifically, the positioning of the first engaging position 101 on the clamping member 31 and the positioning of the second engaging position 102 on the second limiting member 5 are only axial positioning, so that the clamping member 31 and the second limiting member 5 cannot move axially, but can ensure the rotation of the clamping member 31 relative to the outer shell 1 and the rotation of the second limiting member 5 relative to the outer shell 1.

[0075] It should be noted that the relative movement between the clamping bracket 32, the clamping member 31, and the second limiting member 5 is only axial movement. Due to the insertion relationship between the clamping member 31 and the second limiting member 5, when the clamping member 31 rotates relative to the outer shell 1, the clamping member 31 can drive the second limiting member 5 and the clamping bracket 32 ​​to rotate relative to the outer shell 1, thereby driving the elastic clamping sleeve 2 to rotate relative to the outer shell 1, and finally realizing the rotation of the guide wire.

[0076] like Figure 3 As shown, the guide wire rotating device 8 includes a rotating drive member 81, a driving gear 82, and a driven gear 83; the driving gear 82 is connected to the rotating drive member 81 to rotate under the drive of the rotating drive member 81; the driven gear 83 is sleeved on the clamping device 3 and meshes with the driving gear 82.

[0077] Specifically, the driven gear 83 is sleeved on the clamping member 31; when the rotary drive member 81 drives the drive gear 82 to rotate, the drive gear 82 drives the driven gear 83 to rotate, and then drives the clamping member 31 to rotate through the driven gear 83; under the force transmission action of the clamping member 31, the second limiting member 5, the clamping bracket 32 ​​and the elastic clamping sleeve 2, the rotation of the guide wire is finally realized.

[0078] One embodiment of the present invention, such as Figure 1 As shown, the outer shell 1 includes a housing 11 and a top cover 12. The guide wire rotating device 8 and the clamping device 3 are both located inside the housing 11. One end of the top cover 12 is rotatably connected to the housing 11, and the other end is engaged with the housing 11.

[0079] In this embodiment, the outer shell 1 is opened and closed by a rotatable connection between the upper cover 12 and the housing 11; after the upper cover 12 is opened, the clamping device 3 can be removed from the outer shell 1 and the guide wire can be replaced.

[0080] In one embodiment of this invention, the upper cover 12 and the housing 11 can also be connected by threaded fasteners such as bolts to further improve the stability of the housing 1 after it is locked.

[0081] In summary, the present invention provides an automatic guidewire transfer mechanism, comprising: a housing; an elastic sleeve sleeved on the guidewire; a clamping device disposed outside the elastic sleeve and detachably disposed inside the housing; the clamping device being used to clamp and release the elastic sleeve; and an axial transmission device detachably connected to the housing and used to drive the housing to move axially relative to the guidewire; when the clamping device clamps the elastic sleeve, the elastic sleeve clamps the guidewire to move; when the clamping device releases the elastic sleeve, the elastic sleeve is in clearance fit with the guidewire and can move axially relative to the guidewire under the drive of the clamping device. In this invention, the force is transmitted through the axial transmission device, the outer shell, the clamping device, and the elastic sleeve, and the guide wire is automatically transmitted by clamping and releasing the elastic sleeve. Simultaneously, when the guide wire is transmitted forward, the elastic sleeve and the guide wire are in a relatively stationary state, similar to pinching the guide wire with fingers. When the elastic sleeve moves axially backward, a clearance fit exists between the elastic sleeve and the guide wire, reducing the contact area. This significantly reduces the friction on the guide wire surface, effectively minimizing damage to the guide wire surface coating, both during the forward transmission of the guide wire and the backward movement of the elastic sleeve relative to the guide wire.

[0082] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An automatic guide wire transfer mechanism, characterized in that, It includes: shell; An elastic sleeve is fitted onto the guidewire; A clamping device is disposed outside the elastic sleeve and detachably disposed inside the housing; the clamping device is used to clamp and release the elastic sleeve. An axial transmission device is detachably connected to the housing and is used to drive the housing to move axially relative to the guide wire; When the clamping device clamps the elastic sleeve, the elastic sleeve clamps the guide wire to drive the guide wire to move; when the clamping device releases the elastic sleeve, the elastic sleeve and the guide wire are in clearance fit, and the elastic sleeve can move axially relative to the guide wire under the drive of the clamping device. The clamping device includes: The clamping member has a receiving cavity, with an opening at one axial end and a guide wire through hole at the other axial end; the elastic sleeve is located within the receiving cavity; The clip support has one end located inside the receiving cavity and the other end extending from the opening to the outside of the clamping member; A driving element is detachably mounted on the clamping bracket; the driving element is used to drive the clamping bracket to move axially relative to the clamping member to clamp and release the elastic clamp. The jacket support is provided with a receiving groove near the axial end of the elastic jacket, a portion of the elastic jacket is located in the receiving groove, and can move axially relative to the receiving groove; The opening of the receiving groove is provided with a first conical surface, and the elastic sleeve is provided with a second conical surface, which cooperates with the first conical surface; the small diameter end of the first conical surface is away from the clamping member, and the large diameter end of the first conical surface is close to the clamping member; When the clip support approaches the clamping member and compresses the elastic clip, the elastic clip is used to receive radial compressive force to clamp the guide wire.

2. The automatic guidewire transfer mechanism according to claim 1, characterized in that, It also includes: The first limiting member is sleeved on the sleeve bracket and located at one end of the sleeve bracket near the elastic sleeve; The second limiting member is sleeved on the jacket bracket and located on the side of the first limiting member away from the elastic jacket; the jacket bracket can move axially relative to the second limiting member. An elastic element is sleeved on the jacket bracket; the two ends of the elastic element abut against the first limiting element and the second limiting element, respectively.

3. The automatic guidewire transfer mechanism according to claim 1, characterized in that, The driving component includes: A push-pull frame; the push-pull frame is provided with a mounting position, and the jacket bracket is arranged within the mounting position; A driver, connected to the push-pull bracket, is used to drive the push-pull bracket to move axially relative to the clamping member, thereby moving the clamping bracket.

4. The automatic guidewire transfer mechanism according to claim 3, characterized in that, It also includes: A retaining ring is fitted onto the clamping bracket and located at the end of the clamping bracket away from the clamping member; The push-pull bracket is located on the side of the fixing ring near the clamping member and is in contact with the fixing ring.

5. The automatic guidewire transfer mechanism according to claim 1, characterized in that, It also includes: A guide wire rotation device is disposed inside the housing and connected to the clamping device, so as to drive the guide wire to rotate by driving the clamping device to rotate.

6. The automatic guidewire transfer mechanism according to claim 5, characterized in that, The guide wire rotation device includes: Rotary drive component; A drive gear is connected to the rotary drive member to rotate under the drive of the rotary drive member; The driven gear is sleeved on the clamping device and meshes with the driving gear.

7. The automatic guidewire transfer mechanism according to claim 1, characterized in that, The outer casing includes: case; Top cover; one end of the top cover is rotatably connected to the housing, and the other end is engaged with the housing.

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