CN-119455228-B - Automatic transmission mechanism of seal wire

CN119455228BCN 119455228 BCN119455228 BCN 119455228BCN-119455228-B

Abstract

The invention discloses an automatic guide wire transmission mechanism which comprises a shell, an elastic jacket sleeved on a guide wire, a clamping device arranged outside the elastic jacket and detachably arranged in the shell, an axial transmission device detachably connected with the shell and used for driving the shell to axially move relative to the guide wire, wherein the elastic jacket clamps the guide wire to drive the guide wire to move when the clamping device clamps the elastic jacket, and the elastic jacket is in clearance fit with the guide wire and can axially move relative to the guide wire under the driving of the clamping device when the clamping device releases the elastic jacket. The invention can relatively static between the elastic jacket and the guide wire when the guide wire is transmitted forwards, and reduce the contact area by clearance fit between the elastic jacket and the guide wire when the elastic jacket moves backwards axially, so that the friction force on the surface of the guide wire can be reduced no matter the guide wire is transmitted forwards or the elastic jacket moves backwards relative to the guide wire, and the damage of the surface coating of the guide wire is reduced.

Inventors

YANG ZHIXIONG
SHI XIAOFEI
ZHENG JIXUAN
Qi Yuandong

Assignees

深圳市人工智能与机器人研究院
招商局投资发展有限公司

Dates

Publication Date: 20260508
Application Date: 20241021

Claims (7)

1. An automatic guidewire delivery mechanism, comprising: A housing; An elastic jacket sleeved on the guide wire; the clamping device is arranged outside the elastic jacket and detachably arranged in the shell, and is used for clamping and releasing the elastic jacket; an axial transmission device detachably connected with the shell and used for driving the shell to axially move relative to the guide wire; When the clamping device releases the elastic clamping sleeve, the elastic clamping sleeve is in clearance fit with the guide wire and can axially move relative to the guide wire under the drive of the clamping device; The clamping device comprises: The clamping piece is provided with a containing cavity, one axial end of the clamping piece is provided with an opening, and the other axial end of the clamping piece is provided with a guide wire perforation; A jacket bracket, one end of which is positioned in the accommodating cavity, and the other end of which extends from the opening to the outside of the clamping piece; the driving piece is used for driving the jacket bracket to axially move relative to the clamping piece so as to clamp and release the elastic jacket; The jacket bracket is provided with a containing groove near the axial end part of the elastic jacket, and one part of the elastic jacket is positioned in the containing groove and can move axially relative to the containing groove; the opening of the accommodating groove is provided with a first conical surface, the elastic jacket is provided with a second conical surface, and the second conical surface is matched with the first conical surface; the small diameter end of the first conical surface is far away from the clamping piece, and the large diameter end of the first conical surface is close to the clamping piece; When the jacket bracket is close to the clamping piece and presses the elastic jacket, the elastic jacket is used for receiving the pressing force along the radial direction to clamp the guide wire.
2. The automatic guidewire delivery mechanism of claim 1, further comprising: The first limiting piece is sleeved on the jacket bracket and is positioned at one end of the jacket bracket, which is close to the elastic jacket; The second limiting piece is sleeved on the jacket bracket and is positioned at one side of the first limiting piece far away from the elastic jacket; The elastic piece is sleeved on the jacket bracket, and two ends of the elastic piece respectively support against the first limiting piece and the second limiting piece.
3. The automatic guidewire delivery mechanism of claim 1, wherein the driver comprises: the push-pull frame is provided with a mounting position, and the jacket bracket is arranged in the mounting position; the driver is connected with the push-pull frame and used for driving the push-pull frame to move along the axial direction relative to the clamping piece so as to drive the jacket bracket to move.
4. The automatic guidewire delivery mechanism of claim 3, further comprising: The fixing ring is sleeved on the jacket bracket and is positioned at one end of the jacket bracket far away from the clamping piece; the push-pull frame is positioned on one side of the fixed ring, which is close to the clamping piece, and is contacted with the fixed ring.
5. The automatic guidewire delivery mechanism of claim 1, further comprising: The guide wire rotating device is arranged in the shell and connected with the clamping device, so that the guide wire is driven to rotate by driving the clamping device to rotate.
6. The automatic guidewire delivery mechanism of claim 5, wherein the guidewire rotation means comprises: a rotary driving member; a driving gear connected with the rotation driving member to rotate under the driving of the rotation driving member; The driven gear is sleeved on the clamping device and meshed with the driving gear.
7. The automatic guidewire delivery mechanism of claim 1, wherein the housing comprises: A housing; and one end of the upper cover is rotationally connected with the shell, and the other end of the upper cover is clamped with the shell.

Description

Automatic transmission mechanism of seal wire Technical Field The invention relates to the technical field of guide wire conveying equipment, in particular to an automatic guide wire conveying mechanism. Background In the prior art, a vascular intervention robot adopts a group of symmetrical friction wheels to transfer a guide wire, specifically, the guide wire passes through the group of symmetrical friction wheels and drives the friction wheels to rotate, so as to simulate the action of twisting the guide wire by hands of a person, and further realize the delivery task of the guide wire. By adopting the scheme, although the transmission of the guide wire is realized, in the transmission process of the guide wire by the friction wheel, relative motion exists between the friction wheel and the guide wire, the friction wheel is continuously rubbed with the guide wire, so that the surface coating of the guide wire is damaged, the friction between the guide wire and the guide tube is increased, the guide wire is soft, and the feeding process can be possibly blocked at a certain position. Accordingly, the prior art is still in need of improvement and development. Disclosure of Invention The invention aims to solve the technical problems that the friction force is large and the surface of a guide wire is easy to damage when the guide wire is transmitted in the prior art. The technical scheme adopted for solving the technical problems is as follows: an automatic guidewire delivery mechanism, comprising: A housing; An elastic jacket sleeved on the guide wire; the clamping device is arranged outside the elastic jacket and detachably arranged in the shell, and is used for clamping and releasing the elastic jacket; an axial transmission device detachably connected with the shell and used for driving the shell to axially move relative to the guide wire; When the clamping device releases the elastic clamping sleeve, the elastic clamping sleeve is in clearance fit with the guide wire and can axially move relative to the guide wire under the drive of the clamping device. The automatic guide wire transfer mechanism, wherein the clamping device comprises: The clamping piece is provided with a containing cavity, one axial end of the clamping piece is provided with an opening, and the other axial end of the clamping piece is provided with a guide wire perforation; A jacket bracket, one end of which is positioned in the accommodating cavity, and the other end of which extends from the opening to the outside of the clamping piece; The driving piece is used for driving the jacket bracket to axially move relative to the clamping piece so as to clamp and release the elastic jacket. The automatic guide wire transmission mechanism is characterized in that a containing groove is formed in the end portion, close to the elastic jacket, of the jacket support, and a part of the elastic jacket is located in the containing groove and can move axially relative to the containing groove. The automatic guide wire transmission mechanism comprises a guide wire, wherein a first conical surface is arranged at the opening of the accommodating groove, a second conical surface is arranged on the elastic jacket and matched with the first conical surface, the small-diameter end of the first conical surface is far away from the clamping piece, and the large-diameter end of the first conical surface is close to the clamping piece. The automatic transmission mechanism of guide wire, it still includes: The first limiting piece is sleeved on the jacket bracket and is positioned at one end of the jacket bracket, which is close to the elastic jacket; The second limiting piece is sleeved on the jacket bracket and is positioned at one side of the first limiting piece far away from the elastic jacket; The elastic piece is sleeved on the jacket bracket, and two ends of the elastic piece respectively support against the first limiting piece and the second limiting piece. The automatic guide wire transfer mechanism, wherein the driving member includes: the push-pull frame is provided with a mounting position, and the jacket bracket is arranged in the mounting position; the driver is connected with the push-pull frame and used for driving the push-pull frame to move along the axial direction relative to the clamping piece so as to drive the jacket bracket to move. The automatic transmission mechanism of guide wire, it still includes: The fixing ring is sleeved on the jacket bracket and is positioned at one end of the jacket bracket far away from the clamping piece; the push-pull frame is positioned on one side of the fixed ring, which is close to the clamping piece, and is contacted with the fixed ring. The automatic transmission mechanism of guide wire, it still includes: The guide wire rotating device is arranged in the shell and connected with the clamping device, so that the guide wire is driven to rotate by driving the clamping device to rotate. The automatic