Automatic guide wire transmission mechanism

Abstract

The invention discloses an automatic guide wire conveying mechanism which comprises a shell. The elastic jacket is arranged on the guide wire in a sleeving manner; the clamping device is arranged outside the elastic clamping sleeve and is detachably arranged in the shell; the clamping device is used for clamping and releasing the elastic jacket; the axial transmission device is detachably connected with the shell and used for driving the shell to move in the axial direction relative to the guide wire; when the clamping device clamps the elastic clamping sleeve, the elastic clamping sleeve clamps the guide wire so as to drive the guide wire to move. When the clamping device releases the elastic clamping sleeve, the elastic clamping sleeve is in clearance fit with the guide wire and can be driven by the clamping device to axially move relative to the guide wire. When the guide wire is conveyed forwards, the elastic clamping sleeve and the guide wire are relatively static; when the elastic clamping sleeve moves backwards and axially, the elastic clamping sleeve is in clearance fit with the guide wire, the contact area is reduced, friction force on the surface of the guide wire can be reduced whether the guide wire is conveyed forwards or the elastic clamping sleeve moves backwards relative to the guide wire, and damage to a coating on the surface of the guide wire is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of guidewire transmission equipment, and in particular to an automatic guidewire transmission mechanism. Background Art

[0002] In the prior art, a vascular intervention robot uses a set of symmetrical friction wheels to deliver the guide wire; specifically, the guide wire is passed through the symmetrical set of friction wheels, and the friction wheels are driven to rotate, simulating the action of twisting the guide wire by human hands, thereby achieving the guide wire delivery task.

[0003] Although the above scheme achieves the transmission of the guide wire, there is relative movement between the friction wheel and the guide wire during the process of the guide wire being transmitted by the friction wheel. The friction wheel continuously rubs against the guide wire, causing damage to the surface coating of the guide wire, thereby increasing the friction between the guide wire and the catheter. In addition, the guide wire itself is soft, which may eventually cause the feeding process to be blocked at a certain position.

[0004] Therefore, the prior art still needs 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 guide wire delivery mechanism in view of the above-mentioned defects of the prior art, aiming to solve the problem in the prior art that the friction force is large during guide wire delivery and the guide wire surface is easily damaged.

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

[0007] A guide wire automatic delivery mechanism, comprising:

[0008] shell;

[0009] An elastic jacket is sleeved on the guide wire;

[0010] A clamping device is arranged outside the elastic jacket and detachably disposed in the housing; the clamping device is used to clamp and release the elastic jacket;

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

[0012] When the clamping device clamps the elastic jacket, the elastic jacket clamps the guide wire to drive the guide wire to move; when the clamping device releases the elastic jacket, the elastic jacket and the guide wire gap fit together and can move axially relative to the guide wire under the drive of the clamping device.

[0013] The guide wire automatic transmission mechanism, wherein the clamping device comprises:

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

[0015] A jacket bracket, one end of which is located in the accommodating cavity and the other end of which extends from the opening to the outside of the clamping member;

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

[0017] The guide wire automatic transmission mechanism, wherein the jacket bracket is provided with a receiving groove near the axial end of the elastic jacket, a part of the elastic jacket is located in the receiving groove and can move axially relative to the receiving groove.

[0018] The guide wire automatic transmission mechanism, wherein a first conical surface is provided at the opening of the receiving groove, and a second conical surface is provided on the elastic sleeve, and the second conical surface 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.

[0019] The guide wire automatic transmission mechanism further comprises:

[0020] A first limiting member is sleeved on the jacket bracket and is located at one end of the jacket bracket close to the elastic jacket;

[0021] A second limiting member is sleeved on the jacket bracket and is located on a 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 member is sleeved on the jacket bracket; two ends of the elastic member respectively abut against the first limiting member and the second limiting member.

[0023] The guide wire automatic transmission mechanism, wherein the driving member comprises:

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

[0025] The driver is connected to the push-pull frame and is used to drive the push-pull frame to move axially relative to the clamping member to drive the jacket bracket to move.

[0026] The guide wire automatic transmission mechanism further comprises:

[0027] A fixing ring, which is sleeved on the jacket bracket and located at an end of the jacket bracket away from the clamping member;

[0028] The push-pull frame is located at a side of the fixing ring close to the clamping member and is in contact with the fixing ring.

[0029] The guide wire automatic transmission mechanism further comprises:

[0030] The guide wire rotating device is arranged in the shell and connected with the clamping device so as to drive the guide wire to rotate by driving the clamping device to rotate.

[0031] The guide wire automatic transmission mechanism, wherein the guide wire rotating device comprises:

[0032] Rotating drive member;

[0033] A driving gear 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 meshed with the driving gear.

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

[0036] case;

[0037] An upper cover; one end of the upper cover is rotatably connected to the shell, and the other end is engaged with the shell.

[0038] Beneficial effect: In the present invention, the force is transmitted by the axial transmission device, the shell, the clamping device and the elastic sleeve, and the guide wire is clamped and released, so that the guide wire can be automatically transmitted; at the same time, when the guide wire is transmitted forward, a relatively static state is formed between the elastic sleeve and the guide wire, which is similar to pinching the guide wire with fingers to transmit it forward; when the elastic sleeve moves axially backward, the gap between the elastic sleeve and the guide wire is matched, which reduces the contact area, so that no matter whether the guide wire is transmitted forward or the elastic sleeve moves backward relative to the guide wire, the friction force on the guide wire surface is greatly reduced, and the damage to the guide wire surface coating is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of the guide wire automatic transmission mechanism of the present invention;

[0040] Figure 2 It is a schematic diagram of the overall structure of the guide wire automatic transmission mechanism when the upper cover is opened in the present invention;

[0041] Figure 3 This is a first view of the internal structure of the guidewire automatic delivery mechanism of the present invention;

[0042] Figure 4This is a second view of the internal structure of the guidewire automatic delivery mechanism of the present invention;

[0043] Figure 5 is a schematic diagram of the structure of the clamping member, the driven gear and the jacket support after being decomposed in the present invention;

[0044] Figure 6 is a schematic diagram of the exploded structure of the clamping device of the present invention;

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

[0046] Figure 8 is a schematic structural diagram of the second position-limiting member in the present invention;

[0047] Fig. 9 It is a schematic diagram of the assembly structure of the elastic member and the jacket bracket in the present invention. DETAILED DESCRIPTION

[0048] The following will describe the embodiments of the present invention 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 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 understood that the preferred embodiments are only for illustrating the present invention, 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 illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

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

[0051] The elastic jacket 2 is sleeved on the guide wire; the clamping device 3 is arranged outside the elastic jacket 2 and is detachably arranged in the housing 1; the clamping device 3 is used to clamp and release the elastic jacket 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 jacket 2, the elastic jacket 2 clamps the guide wire to drive the guide wire to move; when the clamping device 3 releases the elastic jacket 2, the elastic jacket 2 is in clearance 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 so that the elastic sleeve 2 is in a released state, a gap is generated between the elastic sleeve 2 and the guide wire, so that relative movement can be generated between the elastic sleeve 2 and the guide wire; since the outer shell 1 wraps the clamping device 3, and the clamping device 3 wraps the elastic sleeve 2, the axial transmission device is started when the elastic sleeve 2 is in a released state, and 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, so that under the drive of 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 clamping state, the elastic sleeve 2 and the guide wire are tightly fitted together, so that the elastic sleeve 2 and the guide wire become a whole and can only move synchronously but cannot produce relative movement; at this time, the axial transmission device is started, and 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, so that under the drive of the axial transmission device, the outer shell 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 the present invention, the elastic sleeve 2 is clamped by the clamping device 3, and the axial transmission device is turned on when the elastic sleeve 2 clamps the guide wire, so that the guide wire can be clamped and transmitted forward; the elastic sleeve 2 is released by the clamping device 3, and the axial transmission device is turned on when the elastic sleeve 2 releases the guide wire to drive the elastic sleeve 2 to move axially in the opposite direction relative to the guide wire, and then the guide wire is clamped again, and the cycle is repeated to continuously transmit the guide wire forward.

[0055] It can be seen that in the present invention, the force is transmitted by the axial transmission device, the shell 1, the clamping device 3 and the elastic sleeve 2, and the automatic transmission of the guide wire can be achieved by clamping and releasing the elastic sleeve 2; at the same time, when the guide wire is transmitted forward, a relatively static state is formed between the elastic sleeve 2 and the guide wire, which is similar to pinching the guide wire with fingers and transmitting it forward; when the elastic sleeve 2 moves axially backward, the gap between the elastic sleeve 2 and the guide wire is matched, thereby reducing the contact area, so that no matter in the process of forward transmission of the guide wire or the process of backward movement of the elastic sleeve 2 relative to the guide wire, the friction force on the surface of the guide wire is greatly reduced, thereby effectively reducing the damage to the coating on the surface of the guide wire.

[0056] like Figure 3 As shown, the clamping device 3 includes a clamping member 31, a jacket 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, and the other axial end has a guide wire through hole; the opening and the guide wire through hole are connected to the receiving cavity from the axial ends of the receiving cavity respectively, and the guide wire through hole can only allow the guide wire to pass through. The opening is adapted to the jacket bracket 32, and the guide wire through hole can allow the guide wire to pass through.

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

[0058] Specifically, the axial ends of the elastic jacket 2 are respectively limited by the clamping piece 31 and the jacket bracket 32, so that when the outer shell 1 moves axially, the elastic jacket 2 can move axially synchronously with the outer shell 1 under the limiting action of the clamping piece 31 and the jacket bracket 32, thereby realizing the transmission of the guide wire. There is a connection relationship between the driving member 33 and the jacket bracket 32. When the driving member 33 is started, the jacket bracket 32 ​​moves axially relative to the clamping member 31, thereby moving away from and approaching the clamping member 31; when the jacket bracket 32 ​​moves axially and away from the clamping member 31, the force of the jacket bracket 32 ​​and the clamping member 31 that clamps the elastic jacket 2 is reduced, and the elastic jacket 2 can be adjusted to a relaxed state, then the elastic jacket 2 can move axially relative to the guide wire under the drive of the outer shell 1; when the jacket bracket 32 ​​moves axially and approaches the clamping member 31, the force of the jacket bracket 32 ​​and the clamping member 31 that clamps the elastic jacket 2 is increased, and the elastic jacket 2 can be adjusted to a clamped state, then the elastic jacket 2 can drive the guide wire to move forward axially synchronously under the drive of the outer shell 1.

[0059] In one embodiment of the present invention, Fig. 9 As shown, the jacket bracket 32 ​​is provided with a receiving groove 321 at the axial end portion close to the elastic jacket 2 , and 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 bracket 32, so that when the sleeve bracket 32 ​​moves axially away from the clamping member 31, the elastic sleeve 2 can maintain the current horizontal position and will not fall, thereby ensuring that the elastic sleeve 2 can be clamped the next time the sleeve bracket 32 ​​approaches the clamping member 31.

[0061] Specifically, Figure 6 and Figure 7 As shown, the elastic collet 2 includes a collet head 21 and a guide column 22, wherein the collet head 21 is located in the accommodating cavity, and the guide column 22 is located in the receiving groove 321 and can move axially relative to the receiving groove 321. The collet head 21 is used to clamp and release the guide wire; the guide column 22 is coaxially arranged with the receiving groove 321 and the accommodating cavity, and through the interference of the receiving groove 321 with the guide column 22, when the collet bracket 32 ​​is away from the clamping member 31, the collet head 21 can maintain the current horizontal position under the supporting force of the guide column 22, so as to ensure that the collet bracket 32 ​​can accurately clamp the collet head 21 after resetting to be close to the clamping member 31.

[0062] In one implementation of this embodiment, Fig. 9 As shown, the opening of the receiving groove 321 is provided with a first conical surface 3211. Figure 7 As shown, the elastic sleeve 2 is provided with a second conical surface 20, which matches 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 enables the elastic sleeve 2 to receive a 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 the guide wire; when the sleeve bracket 32 ​​is away from the clamping member 31, the radial extrusion force on the elastic sleeve 2 is weakened, and the pressure on the guide wire is reduced, thereby releasing the guide wire.

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

[0065] Specifically, the elastic member 6 can be a spring, and the first limiting member 4 and the jacket bracket 32 ​​are an integrally formed structure; the two ends of the elastic member 6 are respectively positioned by the first limiting member 4 and the second limiting member 5, so that the elastic member 6 can be elastically extended and retracted along the axial direction of the jacket bracket 32. The second limiting member 5 is plug-fitted with the clamping member 31, and the first limiting member 4 is positioned by the housing 1, so that when the jacket bracket 32 ​​moves along the axial direction, the second limiting member 5 and the clamping member 31 can both remain stationary. When force is applied to the jacket bracket 32 ​​to move the jacket bracket 32 ​​away from the clamping member 31, the first limiting member 4 moves toward the second limiting member 5 and squeezes the elastic member 6, thereby loosening the elastic jacket 2. When the force applied to the jacket bracket 32 ​​is withdrawn, the first limiting member 4 can automatically reset under the elastic force of the elastic member 6 to restore its own elastic deformation.

[0066] like Figure 8As shown, the second stopper 5 has an insertion port 51 at one end close to the clamping member 31, and the clamping member 31 is partially inserted into the insertion port 51, so as to achieve the plug-in fit between the second stopper 5 and the clamping member 31. The housing 1 is provided with a first engaging position 101 (as shown in FIG. Figure 5 and Figure 6 as shown) and the second engaging position 102 (as shown Figure 6 As shown in the figure, the clamping member 31 is located in the first engaging position 101, and the second limiting member 5 is located in the second engaging position 102. When the driving member 33 drives the jacket bracket 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, so as to ensure that the jacket bracket 32 ​​can move axially relative to the second limiting member 5 and the clamping member 31 at the same time, thereby realizing the clamping and release of the guide wire by the elastic jacket 2.

[0067] In one embodiment of the present invention, when no force is applied to the jacket bracket 32 ​​in the initial state, the elastic member 6 is in a compressed state, and the elastic member 6 presses the first limit member 4 toward the clamping member 31, so that the jacket bracket 32 ​​generates a pre-tightening force on the elastic jacket 2, and the elastic jacket 2 remains in a state of clamping the guide wire. Therefore, when the driving member 33 and the axial transmission device are not started, the elastic jacket 2 is in a state of clamping the guide wire, and the guide wire automatic transmission mechanism is locked on the guide wire and cannot move axially.

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

[0069] Specifically, the mounting position 3311 is used to position the jacket bracket 32, so that when the driving member 33 is started, the push-pull frame 331 can drive the jacket bracket 32 ​​to move axially. The push-pull frame 331 is located at one end of the jacket bracket 32 ​​away from the clamping member 31, so as to prevent the push-pull movement of the push-pull frame 331 from being interfered by the second limit member 5 and the clamping member 31.

[0070] In one embodiment of the present invention, the guide wire automatic transmission mechanism further includes a fixing ring 7 (such as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The fixing ring 7 is sleeved on the jacket bracket 32 ​​and is located at one end of the jacket bracket 32 ​​away from the clamping member 31; the push-pull frame 331 is located on a 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 frame 331 to increase the positioning effect between the push-pull frame 331 and the jacket bracket 32, so that when the push-pull frame 331 pushes the jacket bracket 32 ​​in the direction away from the clamping member 31 to release the elastic jacket 2, it is only necessary to apply force to the fixing ring 7; when the driving member 33 is closed and reset, the push-pull frame 331 is reset along 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 jacket bracket 32 ​​to reset and squeeze the elastic jacket 2, thereby driving the fixing ring 7 to reset.

[0072] In this embodiment, the fixing ring 7 is added to the jacket bracket 32, and the jacket bracket 32 ​​releases the movement of the elastic jacket 2 through the cooperation of the fixing ring 7 and the push-pull frame 331. On the premise of the cooperative positioning between the push-pull frame 331 and the jacket bracket 32, 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 jacket bracket 32 ​​is more stable.

[0073] like Figure 1 As shown, the guide wire automatic transmission mechanism also includes a guide wire rotating device 8, which is arranged in the housing 1 and connected to the clamping device 3 to drive the guide wire to rotate by driving the clamping device 3 to rotate.

[0074] Specifically, the first engaging position 101 and the second engaging position 102 respectively position the clamping member 31 and the second limiting member 5 in an axial direction, so that the clamping member 31 and the second limiting member 5 cannot move in the axial direction, but can ensure the rotation of the clamping member 31 relative to the housing 1 and the rotation of the second limiting member 5 relative to the housing 1.

[0075] It should be noted that the relative movement between the jacket bracket 32, the clamping member 31 and the second limiting member 5 is also only axial movement, and due to the plug-in 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 jacket bracket 32 ​​to rotate relative to the outer shell 1, thereby driving the elastic jacket 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 driving member 81, a driving gear 82 and a driven gear 83; the driving gear 82 is connected to the rotating driving member 81 to rotate under the drive of the rotating driving 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 rotating driving member 81 drives the driving gear 82 to rotate, the driving 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 jacket bracket 32 ​​and the elastic jacket 2, the rotation of the guide wire is finally realized.

[0078] In one embodiment of the present invention, Figure 1 As shown, the housing 1 includes a shell 11 and an upper cover 12 , the guide wire rotating device 8 and the clamping device 3 are both located in the shell 11 , one end of the upper cover 12 is rotatably connected to the shell 11 , and the other end is engaged with the shell 11 .

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

[0080] In one implementation of the present embodiment, the upper cover 12 and the housing 11 may be threadedly connected at one end thereof by means of a threaded connector such as a bolt, so as to further improve the stability of the housing 1 after being locked.

[0081] In summary, the present invention provides an automatic guide wire transmission mechanism, which includes: an outer shell; an elastic sleeve, which is sleeved on the guide wire; a clamping device, which is arranged outside the elastic sleeve and detachably arranged in the outer shell; the clamping device is used to clamp and release the elastic sleeve; an axial transmission device, which is detachably connected to the outer shell and is used to drive the outer shell 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 is matched with the guide wire gap and can move axially relative to the guide wire under the drive of the clamping device. In the present invention, the force is transmitted by the axial transmission device, the shell, the clamping device and the elastic sleeve, and the guide wire is clamped and released, so that the guide wire can be automatically transmitted. At the same time, when the guide wire is transmitted forward, a relatively static state is formed between the elastic sleeve and the guide wire, which is similar to pinching the guide wire with fingers and transmitting it forward. When the elastic sleeve moves axially backward, the gap between the elastic sleeve and the guide wire is matched, which reduces the contact area, so that the friction force on the surface of the guide wire is greatly reduced both in the process of forward transmission of the guide wire and in the process of backward movement of the elastic sleeve relative to the guide wire, thereby effectively reducing the damage to the coating on the surface of the guide wire.

[0082] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A guide wire automatic delivery mechanism, characterized in that: It includes: shell; An elastic jacket is sleeved on the guide wire; A clamping device is arranged outside the elastic jacket and detachably disposed in the housing; the clamping device is used to clamp and release the elastic jacket; An axial transmission device, detachably connected to the housing and used to drive the housing to move axially relative to the guide wire; When the clamping device clamps the elastic jacket, the elastic jacket clamps the guide wire to drive the guide wire to move; when the clamping device releases the elastic jacket, the elastic jacket and the guide wire gap fit together and can move axially relative to the guide wire under the drive of the clamping device.

2. The automatic guide wire delivery mechanism according to claim 1, characterized in that: The clamping device comprises: The clamping member has a receiving cavity, and one axial end has an opening, and the other axial end has a guide wire through hole; the elastic jacket is located in the receiving cavity; A jacket bracket, one end of which is located in the accommodating cavity and the other end of which extends from the opening to the outside of the clamping member; A driving member is detachably arranged on the jacket bracket; the driving member is used to drive the jacket bracket to move axially relative to the clamping member to clamp and release the elastic jacket.

3. The automatic guide wire delivery mechanism according to claim 2, characterized in that: The jacket bracket is provided with a receiving groove at an axial end portion close to the elastic jacket, and a part of the elastic jacket is located in the receiving groove and can move axially relative to the receiving groove.

4. The automatic guide wire delivery mechanism according to claim 3, characterized in that: A first conical surface is arranged at the opening of the receiving groove, and a second conical surface is arranged on the elastic sleeve, and the second conical surface matches 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.

5. The guide wire automatic delivery mechanism according to claim 2, characterized in that: It also includes: A first limiting member is sleeved on the jacket bracket and is located at one end of the jacket bracket close to the elastic jacket; A second limiting member is sleeved on the jacket bracket and is located on a 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 member is sleeved on the jacket bracket; two ends of the elastic member respectively abut against the first limiting member and the second limiting member.

6. The guide wire automatic delivery mechanism according to claim 2, characterized in that: The driving member comprises: A push-pull frame; the push-pull frame is provided with a mounting position, and the jacket bracket is arranged in the mounting position; The driver is connected to the push-pull frame and is used to drive the push-pull frame to move axially relative to the clamping member to drive the jacket bracket to move.

7. The automatic guide wire delivery mechanism according to claim 6, characterized in that: It also includes: A fixing ring, which is sleeved on the jacket bracket and located at an end of the jacket bracket away from the clamping member; The push-pull frame is located at a side of the fixing ring close to the clamping member and is in contact with the fixing ring.

8. The automatic guide wire delivery mechanism according to claim 1, characterized in that: It also includes: The guide wire rotating device is arranged in the shell and connected with the clamping device so as to drive the guide wire to rotate by driving the clamping device to rotate.

9. The automatic guide wire delivery mechanism according to claim 8, characterized in that: The guide wire rotating device comprises: Rotating drive member; A driving gear 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 meshed with the driving gear.

10. The automatic guide wire delivery mechanism according to claim 1, characterized in that: The housing comprises: case; An upper cover; one end of the upper cover is rotatably connected to the shell, and the other end is engaged with the shell.

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