Handheld guide wire transmission mechanism

Abstract

The utility model discloses a handheld guide wire transmission mechanism which comprises an elastic clamping sleeve used for being arranged on a guide wire in a sleeving mode so as to clamp and release the guide wire. The positioning device is provided with a containing cavity; the elastic clamping sleeve is located in the containing cavity. One end of the jacket bracket is positioned in the accommodating cavity, and the other end extends out of the positioning device; the jacket bracket can move along the axial direction relative to the positioning device; the holding device is arranged on the clamping sleeve support in a sleeving mode and can be rotationally assembled outside the positioning device so as to drive the clamping sleeve support to move axially when rotating relative to the positioning device; the elastic reset device is positioned in the accommodating cavity; the elastic reset device is arranged on the clamping sleeve support in a sleeving mode and matched with the positioning device. When the elastic reset device is compressed, the clamping sleeve support is far away from the elastic clamping sleeve so as to release the elastic clamping sleeve. When the elastic reset device is released, the clamping sleeve support is close to the elastic clamping sleeve to clamp the elastic clamping sleeve, under the action of the elastic reset device, the holding device and the positioning device are pinched and released by one hand, the clamping state of the guide wire can be changed, and operation with two hands is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of guidewire transmission equipment, in particular to a handheld guidewire transmission mechanism. Background Art

[0002] In the prior art, the guidewire torque controller used for guidewire delivery includes three parts: a conical nut, a clamping sleeve, and a hand-grip tube. The conical nut and the hand-grip tube are threaded together, and the clamping sleeve is contained in the cavity between the two. The guidewire passes through the pipe between the three. When in use, the doctor holds the hand-grip tube part with one hand and rotates the conical nut with the other hand to control the axial force exerted on the clamping sleeve, and then controls the clamping force of the clamping sleeve on the guidewire to achieve the clamping and loosening of the guidewire. It can be seen that the existing guidewire delivery device needs to be held with both hands, and it is impossible to control the clamping and loosening of the guidewire with one hand, which is inconvenient to operate.

[0003] Therefore, the existing technology still needs to be improved and developed. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a handheld guide wire delivery mechanism in response to the above-mentioned defects of the prior art, aiming to solve the problem in the prior art that the clamping and loosening of the guide wire cannot be controlled with one hand, resulting in inconvenient operation.

[0005] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0006] A handheld guide wire delivery mechanism, comprising:

[0007] An elastic clip, used for being put on the guide wire to clamp and release the guide wire;

[0008] The positioning device has an accommodating cavity; the elastic jacket is located in the accommodating cavity;

[0009] a jacket bracket, one end of which is located in the accommodating cavity and the other end of which extends outside the positioning device; the jacket bracket is movable axially relative to the positioning device;

[0010] A holding device is sleeved on the jacket bracket; the holding device is rotatably mounted outside the positioning device so as to drive the jacket bracket to move axially when rotating relative to the positioning device;

[0011] An elastic reset device is located in the accommodating cavity; the elastic reset device is sleeved on the jacket bracket and cooperates with the positioning device; when the elastic reset device is compressed, the jacket bracket moves away from the elastic jacket to release the elastic jacket; when the elastic reset device is released, the jacket bracket approaches the elastic jacket to clamp the elastic jacket.

[0012] The handheld guide wire delivery mechanism, wherein the holding device comprises:

[0013] A holding plate, rotatably assembled with the positioning device;

[0014] A fixing ring is sleeved on the jacket bracket; the fixing ring is located on the rotation path of the holding pressure plate to drive the jacket bracket to move axially when the holding pressure plate rotates.

[0015] The handheld guide wire delivery mechanism, wherein the holding plate comprises:

[0016] a connecting portion, located between the fixing ring and the positioning device, and rotatably connected to the positioning device;

[0017] The holding portion has one end vertically connected to the connecting portion and the other end bent relative to the connecting portion toward a side close to the positioning device; the fixing ring is located on the rotation path of the connecting portion away from the end of the holding portion.

[0018] The handheld guide wire delivery mechanism, wherein, initially, the elastic jacket clamps the guide wire, the elastic reset device is in a compressed state, and the holding portion is parallel to the jacket support.

[0019] The handheld guide wire transmission mechanism, wherein, initially, the connecting portion is in contact with the fixing ring.

[0020] The handheld guide wire transmission mechanism, wherein the connecting portion is provided with a U-shaped groove, the jacket bracket passes through the U-shaped groove, and can move back and forth in the U-shaped groove.

[0021] The handheld guide wire delivery mechanism, wherein the positioning device comprises:

[0022] The housing; the accommodating cavity is located in the housing; an opening is provided at an axial end of the housing, the opening being in communication with the accommodating cavity; the jacket bracket extends from the opening to the outside of the housing;

[0023] A positioning member is located outside the housing and sleeved on the jacket bracket; the positioning member is plugged into the opening;

[0024] The extension portion is arranged on a side of the positioning member away from the opening; the extension portion is parallel to the jacket bracket and is rotatably connected to the holding device.

[0025] The handheld guidewire delivery mechanism, wherein the jacket support comprises:

[0026] A cylindrical bracket body; one end of the cylindrical bracket body is located in the accommodating cavity; an accommodating groove is provided at the end of the cylindrical bracket body, and a portion of the elastic jacket extends into the accommodating groove;

[0027] The limiting portion is arranged outside the cylindrical bracket body and is located in the accommodating cavity; the limiting portion and the positioning member together form an accommodating space for the elastic reset device.

[0028] The handheld guide wire transmission mechanism, wherein a first conical slope is provided on the inner wall of the accommodating groove, and a second conical slope is provided on the elastic sleeve, and the second conical slope cooperates with the first conical slope; the small diameter end of the first conical slope is close to the positioning member, and the large diameter end of the first conical slope is away from the positioning member.

[0029] The handheld guidewire delivery mechanism, wherein the housing comprises:

[0030] The front end housing; the accommodating cavity is located in the front end housing; the front end housing is also provided with a guide wire through-hole, the guide wire through-hole is connected to the accommodating cavity;

[0031] The rear end shell is located between the front end shell and the positioning piece, and is plugged into and matched with the front end shell and the positioning piece respectively; there is a gap between the rear end shell and the jacket bracket, and a part of the elastic reset device is located in the gap.

[0032] Beneficial effect: When the holding device and the positioning device are pinched, the holding device rotates relative to the positioning device and drives the jacket bracket axially away from the positioning device, the elastic jacket is released, the guide wire is released, and at the same time the elastic reset device is compressed, thereby providing elastic pressure for subsequent reset. When the holding device and the positioning device are released, the axial tension of the holding device on the jacket bracket is canceled, the elastic reset device restores its elastic deformation, and can drive the jacket bracket to reset, restore the clamping force of the jacket bracket on the elastic jacket, and thus restore the clamping force of the elastic jacket on the guide wire. The utility model allows the clamping state of the guide wire to be changed by grasping the holding device and the positioning device with one hand and pinching and releasing the holding device and the positioning device, thereby avoiding the two-handed operation in the prior art and improving the operational convenience of guide wire delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of the handheld guide wire delivery mechanism at the beginning of the present invention;

[0034] Figure 2This is the first view of the internal structure of the handheld guide wire delivery mechanism at the beginning of the present invention;

[0035] Figure 3 This is a reference diagram of the handheld guidewire delivery mechanism in use when the holding device and the positioning device are pinched tightly with one hand to release the guidewire;

[0036] Figure 4 This is the second view of the internal structure of the handheld guidewire delivery mechanism at the beginning of the present invention;

[0037] Figure 5 It is a schematic diagram of the exploded structure of the fixing ring, the jacket bracket and the elastic jacket in the present invention;

[0038] Figure 6 It is a structural schematic diagram of the elastic jacket described in the utility model;

[0039] Figure 7 It is a schematic diagram of the assembly structure of the elastic reset device and the jacket bracket in the utility model. DETAILED DESCRIPTION

[0040] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended solely to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0041] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. Therefore, the drawings only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0042] The utility model provides a handheld guide wire transmission mechanism, such as Figure 1 and Figure 2As shown, the handheld guide wire transmission mechanism includes an elastic sleeve 1, a positioning device 2, a sleeve bracket 3, a holding device 4 and an elastic reset device 5; the elastic sleeve 1 is used to be sleeved on the guide wire to clamp and release the guide wire; the positioning device 2 has a accommodating cavity 100; the elastic sleeve 1 is located in the accommodating cavity 100; one end of the sleeve bracket 3 is located in the accommodating cavity 100, and the other end of the sleeve bracket 3 extends to the outside of the positioning device 2; the sleeve bracket 3 can move axially relative to the positioning device 2; the holding device 4 is sleeved on the sleeve bracket 3; the holding device 4 can be rotatably assembled outside the positioning device 2 to drive the sleeve bracket 3 to move axially when rotating relative to the positioning device 2; the elastic reset device 5 is located in the accommodating cavity 100; as shown Figure 2 and Figure 5 As shown, the elastic reset device 5 is sleeved on the jacket bracket 3 and cooperates with the positioning device 2.

[0043] Specifically, the elastic jacket 1, the positioning device 2, and the jacket bracket 3 can all be used for the guide wire to pass through; wherein, the elastic jacket 1 is used to generate elastic deformation and change the clamping state of the guide wire through the elastic deformation of the elastic jacket 1. The jacket bracket 3 is used to move axially to change the state of the elastic jacket 1; when the jacket bracket 3 moves axially toward the positioning device 2 and presses against the elastic jacket 1, the elastic jacket 1 is squeezed, thereby clamping the guide wire, and the handheld guide wire transfer mechanism and the guide wire are relatively stationary, and the position of the handheld guide wire transfer mechanism on the guide wire is positioned. At this time, the staff can move the handheld guide wire transfer mechanism to move and transfer the guide wire. When the jacket bracket 3 moves axially away from the positioning device 2 and releases the elastic jacket 1, the elastic jacket 1 resumes its elastic deformation, thereby loosening the guide wire. Then, by applying force to the handheld guide wire transfer mechanism, the elastic jacket 1 can be moved relative to the guide wire, thereby changing the position of the handheld guide wire transfer mechanism on the guide wire.

[0044] The holding device 4 is cross-connected with the positioning device 2 and can rotate relative to the positioning device 2, forming the principle of a handheld clamp. When one hand holds the positioning device 2 and the holding device 4 and squeezes them together (such as Figure 3As shown), the holding device 4 rotates relative to the positioning device 2, and drives the jacket bracket 3 to move axially, thereby changing the clamping state of the guide wire. When the holding device 4 rotates, the elastic state of the elastic reset device 5 is changed at the same time; then, when the holding device 4 is released, under the action of the elastic reset device 5 to restore the elastic deformation, the jacket bracket 3, the holding device 4 and the elastic jacket 1 are all reset, thereby resetting the state between the elastic jacket 1 and the guide wire. Therefore, in the present application, the clamping state of the guide wire can be changed by grasping the holding device 4 and the positioning device 2 with one hand, and by pinching and relaxing the holding device 4 and the positioning device 2, thereby avoiding the two-handed operation in the prior art and improving the operational convenience of guide wire delivery.

[0045] When the elastic reset device 5 is compressed, the jacket bracket 3 moves away from the elastic jacket 1 to release the elastic jacket 1; when the elastic reset device 5 is released, the jacket bracket 3 moves closer to the elastic jacket 1 to clamp the elastic jacket 1. Specifically, when the holding device 4 and the positioning device 2 are pinched, the holding device 4 rotates relative to the positioning device 2 and drives the jacket bracket 3 axially away from the positioning device 2, the elastic jacket 1 is released, the guidewire is released, and the elastic reset device 5 is compressed, thereby providing elastic pressure for subsequent reset. When the holding device 4 and the positioning device 2 are released, the axial tension of the holding device 4 on the jacket bracket 3 is canceled, the elastic reset device 5 restores its elastic deformation, and can drive the jacket bracket 3 to reset, restoring the clamping force of the jacket bracket 3 on the elastic jacket 1, thereby restoring the clamping force of the elastic jacket 1 on the guidewire.

[0046] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the holding device 4 includes a holding pressure plate 41 and a fixing ring 42; the holding pressure plate 41 is rotatably assembled with the positioning device 2; the fixing ring 42 is sleeved on the jacket bracket 3; the fixing ring 42 is located on the rotation path of the holding pressure plate 41, so as to drive the jacket bracket 3 to move axially when the holding pressure plate 41 rotates.

[0047] Specifically, the holding plate 41 is located between the positioning device 2 and the fixing ring 42, and the holding plate 41 and the positioning device 2 are rotatably assembled; the fixing ring 42 is sleeved on the jacket bracket 3 and is located on the rotation path of the holding plate 41, thereby transmitting the force generated by the rotation of the holding plate 41 to the jacket bracket 3, thereby driving the jacket bracket 3 to move axially. The holding plate 41 is used for staff to hold. When the staff holds the positioning device 2 and the holding plate 41 in one hand and squeezes them together, the holding plate 41 rotates relative to the positioning device 2 and pushes the fixing ring 42 to move away from the positioning device 2, thereby driving the jacket bracket 3 axially away from the positioning device 2 and releasing the elastic jacket 1 to release the guide wire. When the positioning device 2 and the holding pressure plate 41 are released, the holding pressure plate 41 is reset, and the thrust of the holding pressure plate 41 on the fixing ring 42 disappears. Under the action of the restoring elastic force of the elastic reset device 5, the sleeve bracket 3 drives the fixing ring 42 to reset, and the sleeve bracket 3 squeezes the elastic sleeve 1 again, thereby restoring the clamping state of the elastic sleeve 1 on the guide wire.

[0048] In one embodiment of the present application, initially, the elastic reset device 5 is in a compressed state, thereby supporting the jacket bracket 3, so that the elastic jacket 1 can remain in a clamped state on the guidewire under the supporting force of the jacket bracket 3. Therefore, in the present application, initially, the elastic jacket 1 clamps the guidewire, and the handheld guidewire transfer mechanism and the guidewire are relatively stationary, and the guidewire can be transferred by moving the handheld guidewire transfer mechanism.

[0049] like Figures 1-4 As shown, the holding pressure plate 41 includes a connecting portion 411 and a holding portion 412; the connecting portion 411 is located between the fixing ring 42 and the positioning device 2, and is rotatably connected to the positioning device 2; one end of the holding portion 412 is vertically connected to the connecting portion 411, and the other end of the holding portion 412 is bent relative to the connecting portion 411 toward the side close to the positioning device 2; the fixing ring 42 is located on the rotation path of the connecting portion 411 away from one end of the holding portion 412.

[0050] Specifically, the holding portion 412 is used for the staff to hold with one hand, and the connecting portion 411 is used to rotate relative to the positioning device 2 under the conductive force of the holding portion 412, thereby interfering with the fixing ring 42, realizing the axial movement of the sleeve bracket 3, and further realizing the change of the clamping state of the guide wire by the elastic sleeve 1.

[0051] When the staff holds the positioning device 2 and the gripping portion 412 in one hand at the same time and squeezes them together (as shown in FIG. Figure 3 As shown), the holding portion 412 drives the connecting portion 411 to rotate relative to the positioning device 2, the connecting portion 411 abuts against the fixing ring 42 and pushes the fixing ring 42 to move, and the fixing ring 42 drives the jacket bracket 3 away from the positioning device 2, thereby releasing the elastic jacket 1 from the guide wire. At the same time, the jacket bracket 3 squeezes the elastic reset device 5, and the elastic reset device 5 is further compressed. When the staff releases the positioning device 2 and the holding portion 412, the holding portion 412 and the connecting portion 411 are reset, the thrust of the connecting portion 411 on the fixing ring 42 disappears, the elastic reset device 5 elastically resets and drives the jacket bracket 3 to reset, and the jacket bracket 3 drives the fixing ring 42 to reset; the reset of the jacket bracket 3 can squeeze the elastic jacket 1, thereby re-clamping the guide wire by the elastic jacket 1.

[0052] In one embodiment of the present application, initially, the elastic jacket 1 clamps the guide wire, the elastic reset device 5 is in a compressed state, and the holding portion 412 is parallel to the jacket support 3 (e.g., Figure 1 、 Figure 2 and Figure 4 as shown); that is, initially, the holding portion 412 and the positioning device 2 are in a relatively distant release state, and the elastic jacket 1 is in a state of clamping the guide wire. When the staff holds the positioning device 2 and the holding portion 412 in one hand and pinches them together, the holding portion 412 tilts, and the end of the holding portion 412 away from the connecting portion 411 gradually approaches the positioning device 2, eventually causing the elastic jacket 1 to release the guide wire, thereby moving the handheld guide wire transfer mechanism relative to the guide wire and changing the position of the handheld guide wire transfer mechanism on the guide wire. When the staff releases the positioning device 2 and the holding portion 412, the holding portion 412 returns to a parallel state with the jacket bracket 3, and the connecting portion 411 returns to a perpendicular state with the jacket bracket 3. Then, under the action of the elastic reset device 5, the fixing ring 42 drives the jacket bracket 3 to reset and squeeze the elastic jacket 1, and the elastic jacket 1 clamps the guide wire again.

[0053] In one embodiment of the present application, initially, the connecting portion 411 is in contact with the fixing ring 42, so that after the staff holds the positioning device 2 and the holding portion 412 in one hand, they only need to squeeze the two tightly to rotate the connecting portion 411, thereby pushing the fixing ring 42 to drive the jacket bracket 3 to move, ensuring that the fixing ring 42 can be triggered the moment the connecting portion 411 rotates.

[0054] In one embodiment of the present application, a U-shaped groove is provided on the connecting portion 411 , and the jacket bracket 3 passes through the U-shaped groove and can move back and forth in the U-shaped groove.

[0055] In this embodiment, the U-shaped groove is designed on the connecting portion 411. While accommodating the jacket bracket 3 through the U-shaped groove, the interference area between the connecting portion 411 and the fixing ring 42 is increased, thereby improving the stability of the connecting portion 411 triggering the fixing ring 42 when rotating.

[0056] like Figure 1 、 Figure 2 and Figure 3 As shown, the positioning device 2 includes a shell 21, a positioning member 22 and an extension portion 23; the accommodating cavity 100 is located in the shell 21; an opening is provided at the axial end of the shell 21, and the opening is communicated with the accommodating cavity 100; the jacket bracket 3 extends from the opening to the outside of the shell 21; the positioning member 22 is located outside the shell 21 and is sleeved on the jacket bracket 3; the positioning member 22 is plugged into the opening; the extension portion 23 is provided on the side of the positioning member 22 away from the opening; the extension portion 23 is parallel to the jacket bracket 3 and is rotatably connected to the holding device 4.

[0057] Specifically, the connecting portion 411 is located between the positioning member 22 and the fixing ring 42, and the extending portion 23 is also located between the positioning member 22 and the fixing ring 42. The extending portion 23 is configured to be rotatably assembled with the connecting portion 411, and the positioning member 22 is configured to position the extending portion 23 together with the housing 21. The extending portion 23 is parallel to the jacket bracket 3, such that the extending portion 23 is bent relative to the housing 21 toward the fixing ring 42, thereby reserving space between the positioning member 22 and the fixing ring 42 for the connecting portion 411 to rotate.

[0058] The shell 21 is used to accommodate the elastic sleeve 1 and the sleeve bracket 3. At the same time, the shell 21 is used to cooperate with the sleeve bracket 3. The shell 21 can also limit the elastic sleeve 1, so that when the sleeve bracket 3 moves toward the accommodating cavity 100, it can generate an extrusion force on the elastic sleeve 1, thereby achieving the clamping of the guide wire by the elastic sleeve 1.

[0059] It should be noted that the elastic jacket 1, the positioning member 22, the jacket bracket 3 and the outer shell 21 are all coaxially arranged, and the guide wire can pass through the jacket bracket 3 and the elastic jacket 1 in sequence from the tail end of the jacket bracket 3 (that is, the end of the jacket bracket 3 extending to the outside of the outer shell 21), and then pass through the outer shell 21.

[0060] like Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the jacket bracket 3 includes a cylindrical bracket body 31 and a limiting portion 32; the cylindrical bracket body 31 can be passed through by the guide wire, and one end of the cylindrical bracket body 31 is located in the accommodating cavity 100, and the other end of the cylindrical bracket body 31 extends from the opening to the outside of the shell 21; the end of the cylindrical bracket body 31 is provided with a accommodating groove 311 (as shown in FIG. Figure 7 As shown in FIG. 3 , a portion of the elastic jacket 1 extends into the accommodating groove 311. The limiting portion 32 is disposed outside the cylindrical support body 31 and is located within the accommodating cavity 100. The limiting portion 32 and the positioning member 22 together form an accommodating space for the elastic reset device 5.

[0061] Specifically, the fixing ring 42 is sleeved on the cylindrical bracket body 31 and is used to drive the cylindrical bracket body 31 to move axially when the connecting portion 411 rotates; the cylindrical bracket body 31 also cooperates with the outer shell 21 to squeeze the elastic sleeve 1 so that the elastic sleeve 1 clamps the guide wire. The limiting portion 32 is used to limit the elastic reset device 5. The limiting portion 32 is located on the side of the positioning member 22 away from the fixing ring 42, and is surrounded by the positioning member 22 to form the accommodating space. The elastic reset device 5 is arranged in the accommodating space, and after the two ends of the elastic reset device 5 respectively abut the limiting portion 32 and the positioning member 22, when the cylindrical bracket body 31 moves toward the opening direction, the limiting portion 32 can squeeze the elastic reset device 5, and the elastic reset device 5 is compressed; when the cylindrical bracket body 31 moves toward the accommodating cavity 100, the squeezing force of the limiting portion 32 on the elastic reset device 5 disappears, the elastic reset device 5 is reset, and drives the limiting portion 32 to reset, and then the elastic sleeve 1 is re-clamped on the guide wire by resetting the cylindrical bracket body 31.

[0062] The accommodating groove 311 is used to accommodate the elastic sleeve 1 and limit the elastic sleeve 1 so that no matter in which direction the cylindrical bracket body 31 moves axially, the elastic sleeve 1 can maintain a coaxial state with the cylindrical bracket body 31, thereby ensuring that the elastic sleeve 1 can be accurately squeezed when the cylindrical bracket body 31 is reset toward the accommodating cavity 100, thereby achieving re-clamping of the guide wire.

[0063] In one embodiment of this application, Figure 7 As shown, the inner wall of the receiving groove 311 is provided with a first conical inclined surface 312, and the elastic jacket 1 is provided with a second conical inclined surface 11 (as shown in FIG. Figure 6As shown), the second conical slope 11 cooperates with the first conical slope 312; the small diameter end of the first conical slope 312 is close to the positioning member 22, and the large diameter end of the first conical slope 312 is away from the positioning member 22.

[0064] In this embodiment, the cooperation between the first conical inclined surface 312 and the second conical inclined surface 11 enables the elastic jacket 1 to receive radial extrusion force when the jacket bracket 3 approaches the accommodating cavity 100 and squeezes the elastic jacket 1, thereby clamping the guide wire and fixing the guide wire; when the jacket bracket 3 is away from the accommodating cavity 100, the radial extrusion force on the elastic jacket 1 is weakened, and the pressure on the guide wire is reduced, thereby releasing the guide wire.

[0065] Since the elastic jacket 1 relies on radial pressure to squeeze the guide wire to achieve the clamping of the guide wire, therefore, in the present application, when the elastic jacket 1 clamps the guide wire and moves the handheld guide wire transfer mechanism to transfer the guide wire, it is equivalent to a human hand holding the guide wire, and no relative friction will be generated between the elastic jacket 1 and the guide wire, thereby reducing the wear generated during the guide wire transfer process.

[0066] In one embodiment of the present application, the shell 21 includes a front end shell 211 and a rear end shell 212; the accommodating cavity 100 is located in the front end shell 211; the front end shell 211 is also provided with a guide wire through-hole, and the guide wire through-hole is connected to the accommodating cavity 100; the rear end shell 212 is located between the front end shell 211 and the positioning member 22, and is respectively plugged into and matched with the front end shell 211 and the positioning member 22; there is a gap between the rear end shell 212 and the jacket bracket 3, and a part of the elastic reset device 5 is located in the gap.

[0067] The front end shell 211 and the rear end shell 212 are in a detachable plug-in fitting relationship, and the rear end shell 212 and the positioning member 22 are also in a detachable plug-in fitting relationship. The elastic sleeve 1 is limited in the accommodating cavity 100 by cooperating with the accommodating groove 311 and directly cooperating with the sleeve and the front end shell 211, so that the handheld guide wire transmission mechanism as a whole becomes a detachable structure. No matter which part of the outer shell 21, the elastic sleeve 1, the sleeve bracket 3, or even the holding device 4 is damaged, it can be disassembled and replaced, which is more conducive to the maintenance of the handheld guide wire transmission mechanism.

[0068] In summary, the utility model provides a handheld guide wire transmission mechanism, which includes: an elastic sleeve for being sleeved onto the guide wire to clamp and release the guide wire; a positioning device having an accommodating cavity; the elastic sleeve is located in the accommodating cavity; a sleeve bracket, one end of which is located in the accommodating cavity and the other end extends to the outside of the positioning device; the sleeve bracket can move axially relative to the positioning device; a holding device sleeved on the sleeve bracket; the holding device can be rotatably assembled outside the positioning device to drive the sleeve bracket to move axially when rotating relative to the positioning device; an elastic reset device is located in the accommodating cavity; the elastic reset device is sleeved on the sleeve bracket and cooperates with the positioning device; when the elastic reset device is compressed, the sleeve bracket moves away from the elastic sleeve to release the elastic sleeve; when the elastic reset device is released, the sleeve bracket approaches the elastic sleeve to clamp the elastic sleeve. When the holding device and the positioning device are pinched, the holding device rotates relative to the positioning device and drives the jacket bracket axially away from the positioning device, the elastic jacket is released, the guide wire is released, and the elastic reset device is compressed, thereby providing elastic pressure for subsequent reset. When the holding device and the positioning device are released, the axial tension of the holding device on the jacket bracket is canceled, the elastic reset device restores its elastic deformation, and can drive the jacket bracket to reset, restore the clamping force of the jacket bracket on the elastic jacket, and thus restore the clamping force of the elastic jacket on the guide wire. The utility model allows the clamping state of the guide wire to be changed by grasping the holding device and the positioning device with one hand and pinching and relaxing the holding device and the positioning device, thereby avoiding the two-handed operation in the prior art and improving the operational convenience of guide wire delivery.

[0069] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, they can make improvements or changes 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 handheld guide wire delivery mechanism, characterized in that: It includes: An elastic clip, used for being put on the guide wire to clamp and release the guide wire; A positioning device having a receiving cavity; The elastic jacket is located in the accommodating cavity; a jacket bracket, one end of which is located in the accommodating cavity and the other end of which extends outside the positioning device; the jacket bracket is movable axially relative to the positioning device; A holding device is sleeved on the jacket bracket; the holding device is rotatably mounted outside the positioning device so as to drive the jacket bracket to move axially when rotating relative to the positioning device; An elastic reset device is located in the accommodating cavity; the elastic reset device is sleeved on the jacket bracket and cooperates with the positioning device; when the elastic reset device is compressed, the jacket bracket moves away from the elastic jacket to release the elastic jacket; when the elastic reset device is released, the jacket bracket approaches the elastic jacket to clamp the elastic jacket.

2. The handheld guide wire delivery mechanism according to claim 1, characterized in that: The holding device comprises: A holding plate, rotatably assembled with the positioning device; A fixing ring is sleeved on the jacket bracket; the fixing ring is located on the rotation path of the holding pressure plate to drive the jacket bracket to move axially when the holding pressure plate rotates.

3. The handheld guide wire delivery mechanism according to claim 2, characterized in that: The holding plate comprises: a connecting portion, located between the fixing ring and the positioning device, and rotatably connected to the positioning device; The holding portion has one end vertically connected to the connecting portion and the other end bent relative to the connecting portion toward a side close to the positioning device; the fixing ring is located on the rotation path of the connecting portion away from the end of the holding portion.

4. The handheld guide wire delivery mechanism according to claim 3, characterized in that: Initially, the elastic jacket clamps the guide wire, the elastic reset device is in a compressed state, and the holding portion is parallel to the jacket support.

5. The handheld guide wire delivery mechanism according to claim 3, characterized in that: Initially, the connecting portion is in contact with the fixing ring.

6. The handheld guide wire delivery mechanism according to claim 3, characterized in that: The connecting portion is provided with a U-shaped groove, and the jacket bracket passes through the U-shaped groove and can move back and forth in the U-shaped groove.

7. The handheld guide wire delivery mechanism according to claim 1, characterized in that: The positioning device comprises: The housing; the accommodating cavity is located in the housing; an opening is provided at an axial end of the housing, the opening being in communication with the accommodating cavity; the jacket bracket extends from the opening to the outside of the housing; A positioning member is located outside the housing and sleeved on the jacket bracket; the positioning member is plugged into the opening; The extension portion is arranged on a side of the positioning member away from the opening; the extension portion is parallel to the jacket bracket and is rotatably connected to the holding device.

8. The handheld guide wire delivery mechanism according to claim 7, characterized in that: The jacket support comprises: A cylindrical bracket body; one end of the cylindrical bracket body is located in the accommodating cavity; an accommodating groove is provided at the end of the cylindrical bracket body, and a portion of the elastic jacket extends into the accommodating groove; The limiting portion is arranged outside the cylindrical bracket body and is located in the accommodating cavity; the limiting portion and the positioning member together form an accommodating space for the elastic reset device.

9. The handheld guide wire delivery mechanism according to claim 8, characterized in that: A first conical slope is provided on the inner wall of the accommodating groove, and a second conical slope is provided on the elastic sleeve, and the second conical slope cooperates with the first conical slope; the small diameter end of the first conical slope is close to the positioning member, and the large diameter end of the first conical slope is away from the positioning member.

10. The handheld guide wire delivery mechanism according to claim 8, characterized in that: The housing comprises: The front end housing; the accommodating cavity is located in the front end housing; the front end housing is also provided with a guide wire through-hole, the guide wire through-hole is connected to the accommodating cavity; The rear end shell is located between the front end shell and the positioning piece, and is plugged into and matched with the front end shell and the positioning piece respectively; there is a gap between the rear end shell and the jacket bracket, and a part of the elastic reset device is located in the gap.

Images