CN215535331U - Valve clamping device and valve clamping system - Google Patents

Abstract

The utility model discloses a valve clamping device and a valve clamping system, wherein the valve clamping device comprises: first arm lock subassembly, second arm lock subassembly and first transmission piece, first arm lock subassembly includes: first arm lock, second arm lock subassembly includes: one end of the first transmission piece is in transmission connection with the first clamping arm component, and the first transmission piece penetrates through the second clamping arm component; under the transmission action of the first transmission piece, the first clamping arm assembly can move relative to the second clamping arm assembly along the extension direction of the first transmission piece, so that the first clamping arm assembly has a separation position and a combination position. Because the first clamping arm component has a separation position and a combination position, the distance between the first clamping arm component and the second clamping arm component can be flexibly adjusted, and on one hand, the valve leaflets can enter between the first clamping arm and the second clamping arm and can be caught and clamped by the clamp. On the other hand, the opening and the clamping of the first clamping arm and the second clamping arm can be prevented from being blocked.

Description

Valve clamping device and valve clamping system

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a valve clamping device and a valve clamping system.

Background

The mitral valve includes a pair of leaflets, called the anterior leaflet and the posterior leaflet, attached to the periphery of the ostium of the left atrium, and attached to the papillary muscles by chordae tendineae. A normal, healthy mitral valve controls blood flow from the left atrium to the left ventricle, while preventing blood flow from the left ventricle back to the left atrium.

Mitral Regurgitation (MR) is a series of pathophysiological changes caused by the organic or functional changes in the leaflets of the mitral valve or their associated structures that cause the anterior and posterior leaflets of the mitral valve to coapt poorly, with blood flowing back from the left ventricle to the left atrium. The valve clamping device developed according to the technical principle of surgical valve edge-to-edge suturing is currently determined because of high safety, simple technical principle and great feasibility.

However, in the related art, the overall diameter of the clamp is large, and the inner diameter of the blood vessel of the human body is limited, so that the clamp is difficult to enter the heart through the blood vessel; the adjusting angle of the clamping arm of the clamping device is limited, and if the clamping arm is wound by the chordae tendineae, the clamping arm cannot be effectively adjusted and is difficult to separate from the chordae tendineae, so that the chordae tendineae can be damaged, and even the operation can fail; the interval between the upper and lower arm lock of clamp closes the ware can't be adjusted for it is comparatively difficult to catch the valve leaf, and upper and lower arm lock can hinder each other when adjusting, leads to the adjustment effect not good.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a valve clamping device, which can flexibly adjust the distance between a first clamping arm component and a second clamping arm component by enabling the first clamping arm component to have a separation position and a combination position, and is beneficial to the valve leaflet to enter between the first clamping arm and the second clamping arm and be caught and clamped by a clamp.

The utility model also provides a valve clamping system.

A valve clip according to an embodiment of the first aspect of the utility model comprises: first arm lock subassembly, second arm lock subassembly and first transmission piece, first arm lock subassembly includes: a first clamp arm, the second clamp arm assembly comprising: one end of the first transmission piece is in transmission connection with the first clamping arm component, and the first transmission piece penetrates through the second clamping arm component; the first clamping arm and the second clamping arm are in one-to-one correspondence, one first clamping arm and one second clamping arm form a group of clamps, and under the transmission action of the first transmission piece, the first clamping arm assembly can move relative to the second clamping arm assembly along the extension direction of the first transmission piece, so that the first clamping arm assembly has a separation position and a combination position.

According to the valve clamping device provided by the embodiment of the utility model, the first clamping arm assembly has the separation position and the combination position, so that the distance between the first clamping arm assembly and the second clamping arm assembly can be flexibly adjusted, and on one hand, the valve leaflets can be favorably inserted between the first clamping arm and the second clamping arm and can be caught and clamped by the clamp. On the other hand, the first clamping arm component can be prevented from blocking the opening and clamping of the second clamping arm, and the second clamping arm component can be prevented from blocking the opening and clamping of the first clamping arm.

According to some embodiments of the utility model, the first clip arm has a first closed position, the second clip arm has a second closed position, one end of each of the first clamping arm and the second clamping arm is close to the first transmission piece, the other end of each of the first clamping arm and the second clamping arm is far away from the first transmission piece, when one end of the first clamping arm, which is far away from the first transmission piece, rotates along the direction close to the upper end of the first transmission piece, the first clamping arm clamps, when one end of the second clamping arm, which is far away from the first transmission piece, rotates along the direction close to the upper end of the first transmission piece, the second clamping arm clamps, when the first clip arm assembly is in the disengaged position, the first clip arm may be in the first stowed position and the second clip arm may be in the second stowed position to reduce the radial dimension of the first clip arm assembly and the second clip arm assembly.

According to some embodiments of the utility model, the second clamp arm assembly further comprises: the locking piece penetrates through the first transmission piece and selectively locks the first transmission piece; the valve binder further comprises: the first traction piece is connected to the locking piece so as to pull the locking piece to unlock the first transmission piece.

According to some embodiments of the utility model, the second clamp arm assembly further comprises: the second clamping arm is arranged on the base, hollow holes are distributed in the base, so that the base forms an elastic base, and when the second clamping arm is located at the second folding position, the base and the second clamping arm are arranged in an interference mode.

According to some embodiments of the utility model, the base is provided with a tongue, only the bottom edge of which is connected with the base, and the tongue constitutes the second clamping arm; the valve clamping device also comprises a second traction piece which is in transmission connection with the second clamping arm, and the second clamping arm can be clamped by pulling the second traction piece.

According to some embodiments of the utility model, the first clamp arm assembly further comprises: the first transmission piece is in transmission connection with the base, the first clamping arm is rotatably arranged on the base, and one end of the first clamping arm is connected with the third transmission piece; the valve binder further comprises: and the third traction piece is in transmission connection with the third transmission piece, and drives the third transmission piece to move so as to drive the first clamping arm to rotate.

According to some embodiments of the utility model, the base comprises: pedestal and mounting panel, the mounting panel includes: first mainboard and first curb plate, first mainboard connect in on the pedestal to extend to the relative both sides of first direction, first curb plate have two, connect respectively in the first direction both ends of first mainboard, and set up respectively in the second direction both sides of first mainboard, first arm lock is two, two first arm lock sets up relatively, every first arm lock all rotationally connect in first mainboard and corresponding on the first curb plate, first mainboard and corresponding set up between the first curb plate dodge the offside the groove of dodging of first arm lock, first direction with the second direction sets up perpendicularly.

According to some embodiments of the utility model, the third transmission comprises: the second main board is located above the first main board and extends towards two opposite sides of the second direction, the two second side boards are respectively connected to two sides of the second direction of the second main board and are arranged vertically and downwards, a sliding groove is formed in the end portion of the first clamping arm, a sliding portion is arranged at one end, far away from the second main board, of the second side board, the sliding portion is in sliding fit with the sliding groove, and the third traction piece is in transmission connection with the second main board.

According to some embodiments of the present invention, the first clamp arm assembly further comprises: the seat body is provided with a groove and penetrates through the upper surface of the first main board, and one end of the first transmission piece penetrates through the second main board and then is connected to the bottom of the groove. The second elastic piece is sleeved on the first transmission piece, is accommodated in the groove, and is fixedly connected with the groove and the second main board at two ends respectively, so that a reset force for the first clamping arm to move to the first furled position is provided by the third transmission piece; or, the second elastic part is arranged on two opposite sides of the mounting plate and is positioned on the outer side of the first clamping arm, so that the second elastic part provides the resetting force for the first clamping arm to move to the first furling position.

A valve clamping system according to an embodiment of the second aspect of the utility model, comprising: the valve clip described above; the dissociator is connected with the second clamping arm component and can be separated relative to the second clamping arm component; a manipulation handle on which the dissociator is disposed; and the fourth traction piece is arranged in the operating handle and is separably connected with the first transmission piece.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of a configuration of a valve clamp and detacher in accordance with an embodiment of the present invention;

FIG. 2 is a schematic structural view of a valve binder according to an embodiment of the utility model;

FIG. 3 is a cross-sectional view of a valve binder according to an embodiment of the utility model;

FIG. 4 is a schematic structural diagram of a base according to an embodiment of the present invention;

FIG. 5 is a side view of a base according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of another embodiment of the second elastic member;

FIG. 7 is a schematic view of another embodiment of the second resilient member with the first clamping arm open;

FIG. 8 is a schematic structural diagram of a latch according to an embodiment of the present invention;

FIG. 9 is a schematic illustration of the latch member in the latched configuration according to an embodiment of the present invention;

FIG. 10 is a schematic illustration of the latch according to an embodiment of the present invention when unlocked;

FIG. 11 is a schematic structural view of a base (with a first transmission member attached) according to an embodiment of the present invention;

FIG. 12 is a schematic structural view of a third transmission member according to an embodiment of the utility model;

FIG. 13 is a schematic diagram of a first clamp arm according to an embodiment of the present invention;

figure 14 is an elevational view of one example of an included angle between two first clamp arms of a first clamp arm assembly according to an embodiment of the present invention greater than 180;

figure 15 is a schematic diagram illustrating an example of an included angle between two first clamp arms of a first clamp arm assembly according to an embodiment of the present invention that is greater than 180;

fig. 16 is a cross-sectional view of a dissociator with a fourth pulling member through the dissociator, according to an embodiment of the utility model;

fig. 17 is a schematic structural view of the dissociator in accordance with an embodiment of the utility model, separated from the fourth pulling member;

figures 18a and 18b are schematic views of a first process of implantation of a valve clip according to an embodiment of the present invention;

figures 19a and 19b are schematic views of a second process of implantation of a valve clip according to an embodiment of the present invention;

figures 20a and 20b are schematic views of a third process of implantation of a valve clip according to an embodiment of the present invention;

figures 21a and 21b are schematic views of a fourth procedure for implantation of a valve clip according to an embodiment of the present invention;

figures 22a and 22b are schematic views of a fifth procedure for implantation of a valve clip according to an embodiment of the present invention;

figures 23a and 23b are schematic illustrations of a sixth process for implantation of a valve clip according to an embodiment of the present invention.

Reference numerals:

100. a valve clamp;

10. a first clamp arm assembly;

11. a first clamp arm; 111. a chute; 112. a first groove section; 113. a second groove section; 114. an expansion section; 12. a base; 121. a base body; 122. mounting a plate; 1221. a first main board; 1222. a first side plate; 123. a groove; 124. a rotating shaft; 125. an avoidance groove; 13. a third transmission member; 131. a second main board; 132. a second side plate; 133. a sliding part; 14. a second elastic member;

20. a second clamp arm assembly;

21. a locking member; 211. a first locking plate; 212. a second locking plate; 213. a second transmission member; 2131. a stent body; 2132. a first leg; 2133. a second leg; 214. a lock body; 215. a first perforation; 216. a third perforation; 22. a base; 221. a cavity; 222. engraving holes; 223. a second clamp arm; 224. a limiting block; 225. a barb; 23. a mounting seat; 231. a first clamping part; 24. a first elastic member;

31. a first transmission member; 32. a first traction member; 33. a third traction member; 34. a second traction member;

200. a dissociator; 210. a third body; 220. an elastic portion; 230. a second clamping part; 240. a fourth perforation;

300. a fourth traction member; 400. a control handle; 500. and (7) valve blades.

Detailed Description

The embodiments of the present invention will be described in detail below, and the embodiments described with reference to the drawings are exemplary and should not be construed as specifically limiting the present invention.

Referring now to fig. 1-23 b, a valve clip 100 according to an embodiment of the present invention is described, and a valve clip system having the valve clip 100 is also presented.

As shown in conjunction with fig. 1-3, the valve clip 100 includes: the clamping arm assembly comprises a first clamping arm assembly 10, a first transmission member 31 and a second clamping arm assembly 20, wherein the second clamping arm assembly 20 is arranged above the first clamping arm assembly 10 in the axial direction of the first transmission member 31.

Also, the first clamp arm assembly 10 includes: first arm lock 11, first arm lock 11 have first closed position, and second arm lock subassembly 20 includes: and the second clamping arm 223, the second clamping arm 223 has a second closed position. The number of the first clamping arms 11 is at least two, the number of the second clamping arms 223 is equal to that of the first clamping arms 11, the second clamping arms 223 correspond to the first clamping arms 11 one by one, and one first clamping arm 11 and one corresponding second clamping arm 223 are matched to form a group of clamps.

The first clamping arm 11 and the second clamping arm 223 have one end disposed close to the first transmission member 31 and the other end disposed far from the first transmission member 31. When one end of the first clamping arm 11, which is far away from the first transmission piece 31, rotates in the direction of being far away from the upper end of the first transmission piece 31, the first clamping arm 11 is opened; when the end of the second clamping arm 223 far away from the first transmission piece 31 rotates in the direction far away from the upper end of the first transmission piece 31, the second clamping arm 223 opens. When one end of the first clamping arm 11, which is far away from the first transmission piece 31, rotates in a direction close to the upper end of the first transmission piece 31, the first clamping arm 11 is clamped; when the end of the second clamping arm 223 far away from the first transmission member 31 rotates in the direction close to the upper end of the first transmission member 31, the second clamping arm 223 clamps. It should be noted that the opening of the first clamping arm 11 and the second clamping arm 223 and the clamping of the first clamping arm 11 and the second clamping arm 223 mean that one end of the first clamping arm 11 and the second clamping arm 223, which is far away from the first transmission member 31, is in a relative motion relationship with the upper end of the first transmission member 31, and not that the clamp formed by the first clamping arm 11 and the corresponding second clamping arm 223 is opened or clamped, the opening of the clamp means that the first clamping arm 11 and the corresponding second clamping arm 223 are relatively far away, and the clamping of the clamp means that the first clamping arm 11 and the corresponding second clamping arm 223 are relatively close. The furled position is the position where the corresponding clamping arm can clamp to the maximum extent, and when in the furled position, the corresponding clamping arm component has the minimum outer diameter which can be reached. In addition, for mitral regurgitation, the number of the first clamping arm 11 and the second clamping arm 223 is two, and for tricuspid regurgitation, the number of the first clamping arm 11 and the second clamping arm 223 is set to three, or the first clamping arm 11 and the second clamping arm 223 are designed to be other numbers according to other practical situations.

The lower end of the first transmission member 31 is connected to the first clamping arm assembly 10 in a transmission manner, and the first transmission member 31 can play a transmission role, that is, the first clamping arm assembly 10 is not only connected to the first transmission member 31, but also can move under the driving of the first transmission member 31. The first transmission member 31 penetrates through the second clamping arm assembly 20. Under the driving action of the first driving member 31, the first clamping arm assembly 10 can move relative to the second clamping arm assembly 20 along the axial direction of the first driving member 31.

As shown in fig. 18a and 18b and fig. 19a and 19b, the first clamping arm assembly 10 has a separating position and a combining position under the driving action of the first driving member 31. The distance between the first clamping arm assembly 10 and the second clamping arm assembly 20 when the first clamping arm assembly is located at the separation position is greater than the distance between the first clamping arm assembly 10 and the second clamping arm assembly 20 when the first clamping arm assembly is located at the combination position. Because of the separation position and the combination position, the distance between the first clamping arm assembly 10 and the second clamping arm assembly 20 can be flexibly adjusted, on one hand, the valve leaflet 500 can enter between the first clamping arm 11 and the second clamping arm 223, so that the valve leaflet 500 can be smoothly caught and clamped by the clamp; on the other hand, the first clamping arm assembly 10 can be prevented from obstructing the opening and the clamping of the second clamping arm 223, and the second clamping arm assembly 20 can be prevented from obstructing the opening and the clamping of the first clamping arm 11. As shown in fig. 18a and 18b, before entering the left atrium, during the process of running in the blood vessel through the sheath, and when the sheath is released from the left atrium, the first clip arm assembly 10 is located at the separated position, so that the first clip arm assembly 10 and the second clip arm assembly 20 are always kept in the separated state, which can prevent the clip arms from overlapping in the radial direction, the second clip arm assembly 20 does not obstruct the clamping of the first clip arm 11, and the first clip arm assembly 10 does not obstruct the clamping of the second clip arm 223, so that the first clip arm 11 and the second clip arm 223 can be clamped to the maximum extent, and are respectively located at the first closed position and the second closed position, thereby reducing the overall radial size of the valve clamp 100, and facilitating the running of the valve clamp 100 in the blood vessel through the sheath and the release from the sheath.

In addition, as shown in fig. 19a and 19b and fig. 20a and 20b, in order to make the valve clip 100 enter the left ventricle for subsequent clipping operation, the valve clip 100 must be oriented toward the apex of the heart, but the left atrial space is limited, and if the first clip arm assembly 10 and the second clip arm assembly 20 are still in the separated state, the overall axial dimension of the valve clip 100 is too large, and the valve clip 100 is difficult to be oriented. Therefore, it is necessary to withdraw the first clamping arm assembly 10 toward the second clamping arm assembly 20 by the first transmission member 31, i.e. move the first clamping arm assembly 10 from the separated position to the combined position, so as to reduce the distance between the first clamping arm assembly 10 and the second clamping arm assembly 20, and thus, reduce the overall axial dimension of the valve clamp 100, so as to facilitate the valve clamp 100 to enter the left ventricle.

As shown in fig. 2 and 3, the second clamping arm assembly 20 further includes: the locking member 21 is sleeved on the first transmission member 31, and the locking member 21 can selectively lock the first transmission member 31. That is, the locking and unlocking of the first transmission member 31 can be controlled by the locking member 21, when the first transmission member 31 is unlocked, the first transmission member 31 can drive the first clamping arm assembly 10 to move between the separation position and the combination position, and when the first transmission member 31 is locked, the first clamping arm assembly 10 is kept at the separation position or at the combination position, so that the implantation and installation of the valve clamping device 100 can be facilitated.

As shown in fig. 1, the valve clip 100 further includes: the first pulling member 32, the first pulling member 32 is connected to the locking member 21 to pull the locking member 21 to unlock the first transmission member 31. That is to say, by pulling the first pulling member 32, the locking member 21 can be driven, so as to unlock the first transmission member 31, that is, the first transmission member 31 drives the first clamping arm assembly 10 to move between the separation position and the combination position, which facilitates the implantation, installation and fixation of the valve clamping device 100. It will be appreciated that, by stopping the pulling of the first traction member 32, the locking member 21 locks the first transmission member 31. In addition, the locking member 21 can be in a locked state for a long time, so that the relative position between the first clamping arm assembly 10 and the second clamping arm assembly 20 can be ensured, and when adjustment is needed, the first traction member 32 is used for pulling and unlocking, and the mode is simple, reliable and easy to implement.

As shown in fig. 8 to 10, the lock member 21 includes: the lock comprises a lock body 214, a first locking piece 211, a second locking piece 212 and a second transmission piece 213, wherein the first locking piece 211 and the second locking piece 212 are arranged in the lock body 214, the first locking piece 211 is provided with a first through hole 215, the second locking piece 212 is provided with a second through hole, and the first transmission piece 31 penetrates through the first through hole 215 and the second through hole. When the first through hole 215 of the first locking piece 211 is aligned with the second through hole of the second locking piece 212 (which means completely aligned or tends to be aligned with the first through hole), the first transmission member 31 can be unlocked by the locking member 21, and the first transmission member 31 can move relative to the locking member 21. When the first through hole 215 of the first locking piece 211 is not aligned with (i.e. misaligned with) the second through hole of the second locking piece 212, the first locking piece 211 and/or the second locking piece 212 may be clamped on the circumferential outer side of the first transmission member 31, so as to complete the locking of the first transmission member 31. It can be understood that, by adopting the combination of the two locking plates, the position of the first transmission member 31 can be effectively locked, and the first transmission member 31 can be prevented from being damaged. The first transmission member 31 may be a spindle.

The second transmission member 213 is in transmission fit with the first locking piece 211 and the first pulling member 32, and the first pulling member 32 drives the first locking piece 211 to move through the second transmission member 213, so that the first through hole 215 of the first locking piece 211 and the second through hole of the second locking piece 212 are arranged opposite to each other. That is, when the first pulling element 32 is pulled, the second transmission element 213 is driven to move, and the second transmission element 213 drives the first locking plate 211 to move, so that the first through hole 215 of the first locking plate 211 is aligned with the second through hole of the second locking plate 212.

As shown in fig. 8, in the extending direction of the first transmission member 31, the two ends of the lock body 214 are both provided with third through holes 216, and when the first through hole 215 is aligned with the second through hole, the first through hole 215 is also aligned with the third through hole 216. That is to say, when the first through hole 215 is aligned with the second through hole, the first transmission member 31 can smoothly pass through the first through hole 215, the second through hole and the third through hole 216, so that the first transmission member 31 can conveniently move up and down, that is, the distance between the first clamping arm assembly 10 and the second clamping arm assembly 20 can be adjusted. The third through hole 216 can guide and limit the first transmission member 31, so that the problem that the first transmission member 31 is inclined and dislocated when the two locking plates lock the first transmission member 31 can be avoided.

As shown in fig. 8-10, the first locking plate 211 may be a plate locking plate disposed obliquely, one end of the first locking plate 211 above abuts against the lock body 214, and one end of the first locking plate 211 below is in driving fit with the second transmission member 213, the second locking plate 212 may be an arc locking plate, the second locking plate 212 is above the first locking plate 211, two ends of the second locking plate 212 abut against the lock body 214, and the bottom portion elastically abuts against one end of the first locking plate 211 above. With such an arrangement, when the end of the first locking piece 211 located below moves towards the second locking piece 212, the first through hole 215 of the first locking piece 211 and the second through hole of the second locking piece 212 can be arranged to be opposite to each other slowly, that is, the first transmission piece 31 can be unlocked. In addition, because the second locking plate 212 is the arc-shaped locking plate and the bottom of the second locking plate 212 elastically abuts against the end of the first locking plate 211 located above, therefore, when the end of the first locking plate 211 located below moves towards the second locking plate 212, the second locking plate 212 can deform and generate the elastic restoring force, when the first traction member 32 is not drawn, the second transmission member 213 and the first locking plate 211 restore to the original position under the action of the elastic restoring force of the second locking plate 212, and the automatic locking of the first transmission member 31 can be realized. The two locking pieces so arranged are ingenious in design and can effectively lock the first transmission piece 31.

Further, the first through hole 215 is opened at the center of the first locking plate 211, and the second through hole is opened at the center of the second locking plate 212, so as to facilitate the first transmission member 31 to penetrate through the locking member 21.

As shown in fig. 9 and 10, the second transmission member 213 may be configured as a bracket, and the second transmission member 213 includes: the first and second legs 2132, 2133 are disposed on opposite sides of the bracket body 2131, the bracket body 2131 is disposed outside the lock body 214 and detachably engaged with the first pulling element 32 in a driving manner, the first leg 2132 is fixedly disposed inside the lock body 214, and the second leg 2133 is disposed inside the lock body 214 and movably abutted to an end of the first lock piece 211 below. With such arrangement, when the first traction member 32 pulls the bracket main body 2131 to move upwards, the first support leg 2132 is fixed, and the second support leg 2133 can move upwards under the driving of the bracket main body 2131, that is, can drive one end of the first locking piece 211 located below to move towards the second locking piece 212, and the first through hole 215 of the first locking piece 211 and the second through hole of the second locking piece 212 can be slowly and rightly arranged, so that the first transmission member 31 can be unlocked. The first pulling member 32 is a flexible elongated body, one free end of the first pulling member 32 penetrates through the bracket main body 2131 and then is bent, so that the two free ends of the first pulling member 32 are aligned, and the bracket main body 2131 can be driven to move upwards by pulling the two free ends of the first pulling member 32; the first pulling member 32 can be separated from the bracket main body 2131 by pulling one of the free ends of the first pulling member 32 alone. In addition, the inner wall of the lock body 214 is provided with a protrusion, the protrusion is located between the first leg 2132 and one end of the first lock piece 211 located above, the first leg 2132 is fixed, and the end of the first lock piece 211 located above is supported.

As shown in fig. 3 and 4, the second clamping arm assembly 20 further includes a base 22, and the second clamping arm 223 is disposed on the base 22. A cavity 221 is formed in the base 22, and the locking member 21 is disposed in the cavity 221. The upper end of the first transmission member 31 is exposed outside the upper end of the base 22, and the lower end of the first transmission member 31 penetrates into the cavity 221 from the upper end of the base 22, penetrates through the locking member 21, penetrates out from the lower end of the base 22, and is in transmission connection with the first clamping arm assembly 10. The first pulling member 32 is detachably engaged with the second transmission member 213 in a transmission manner, and the free end of the first pulling member 32 passes through the cavity 221 and then passes out of the upper end of the base 22 for pulling operation. Forming the cavity 221 in the base 22 may facilitate placement and installation of components such as the latch 21.

In addition, as shown in fig. 4, the through holes 222 are distributed on the base 22, so that the base 22 constitutes an elastic base, and when the second clamping arm 223 is in the second closed position, the base 22 and the second clamping arm 223 are disposed in an interference manner. By providing the cutout 222 on the base 22, the structure of the cutout facilitates the elastic deformation of the base 22, i.e., the base 22 is an elastic base. When clamping the thick leaflet 500, the base 22 can elastically deform radially inward so that the valve binder 100 does not clamp the leaflet 500 with too much force to clamp the leaflet 500, thereby clamping the thick leaflet 500. In addition, as shown in fig. 18b, when the second clamping arm 223 is in the second closed position, the base 22 and the second clamping arm 223 have interference, that is, when the second clamping arm 223 is in the second closed position, the second clamping arm 223 at least partially abuts against the base 22, and under the abutting action of the second clamping arm 223, the base 22 is elastically deformed inward by a certain amount. When gripping a thinner leaflet 500, the elasticity of the second clip arm 223 alone may not provide sufficient gripping force, possibly resulting in the leaflet 500 being unstuck. A certain amount of interference is given to the base 22 and the second clip arms 223, and the clamping force can be supplemented by the elastic deformation of the base 22, so that the thinner leaflet 500 can be clamped. That is, the through holes 222 are distributed on the base 22, and when the second clamping arms 223 are in the second closed position, the base 22 and the second clamping arms 223 are disposed in an interference manner, so as to improve the compliance of the valve binder 100 to the leaflets 500 with different thicknesses.

In this embodiment, the base 22 is provided with a tongue piece connected to the base 22 only at the bottom side, and the tongue piece constitutes the second clip arm 223. Specifically, the second clamping arm 223 may be a part of the base 22, and a tongue piece, only the bottom edge of which is connected to the base 22, is formed by cutting the base 22, and is the second clamping arm 223, so that not only the production of the base 22 and the second clamping arm 223 can be facilitated, but also the use of materials can be saved. In addition, the second clamping arm 223 prepared by cutting has elastic force and tends to incline towards the direction away from the upper end of the first transmission piece 31, so that when the first clamping arm 11 is clamped, the second clamping arm 223 is opened under the action of the elastic force of the second clamping arm 223, so that the second clamping arm 223 tends to close the corresponding first clamping arm 11, and the clamp formed by the first clamping arm 11 and the corresponding second clamping arm 223 is clamped, thereby being beneficial to clamping the valve leaflet 500.

As shown in fig. 1, the valve clip 100 further includes: the second traction piece 34 and the second traction piece 34 are detachably connected with the second clamping arm 223 in a transmission way, and the second clamping arm 223 can be clamped by pulling the second traction piece 34. As described above, the second clamping arm 223 tends to open under its own elastic force, and the clamping degree of the second clamping arm 223 can be controlled by controlling the pulling force of the second pulling member 34, so that it is convenient to flexibly use the second clamping arm 223. Specifically, as shown in fig. 4, a through hole is formed at an end of the second clamping arm 223 far away from the first transmission member 31. The second traction piece 34 is a flexible slender body, one free end of the second traction piece 34 passes through the through hole and then is bent, so that two free ends of the second traction piece 34 are aligned, and meanwhile, the two free ends of the second traction piece 34 are pulled, so that the second clamping arms 223 can be driven to clamp; the second pulling member 34 can be separated from the second clamping arm 223 by pulling one of the free ends of the second pulling member 34 alone.

In addition, as shown in fig. 23a, although the leaflets 500 are already close to each other under the clamping of the first and second clip arms 11 and 223, there are still gaps between the leaflets 500. The base 22 is arranged to fill the gap between the leaflets 500 when the valve binder 100 is closed, i.e. to reduce the regurgitation of the mitral valve more effectively. In addition, in order to prevent the backflow of blood through the through hole 222, the base 22 is covered with a flexible film, which can be used to close the through hole 222 without affecting the elastic deformation of the base 22.

As shown in fig. 1-5, the second clamping arm assembly 20 further includes: and a mounting seat 23, wherein the mounting seat 23 is disposed at one end of the base 22 far away from the first clamping arm assembly 10, that is, at the upper end of the base 22. The mounting base 23 is provided with a first clamping portion 231 for mounting and fixing. By arranging the first clamping parts 231 on the mounting seat 23, the mounting seat 23 can be detachably mounted on the dissociator 200, that is, the valve clamp 100 can be detachably mounted on the dissociator 200 through the first clamping parts 231, so that after the valve clamp 100 is mounted in place, the dissociator 200 can be separated from the valve clamp 100, and the valve clamp 100 can be mounted and fixed.

As shown in fig. 3-5, the second clamping arm assembly 20 further includes: the first elastic member 24, and the first elastic member 24 may be a spring. A cavity 221 is formed in the base 22, a limit block 224 is disposed at the lower end of the base 22, the locking member 21 is disposed in the cavity 221 and supported on the limit block 224, one end of the first transmission member 31 extends into the cavity 221 and penetrates through the locking member 21 to be in transmission connection with the first clamping arm assembly 10, the first elastic member 24 is disposed in the cavity 221 and sleeved on the first transmission member 31, and the first elastic member 24 elastically abuts between the lock body 214 and the mounting seat 23. That is, the first elastic member 24, the mounting seat 23 and the stopper 224 cooperate to prevent the lock body 214 from sliding along the first transmission member 31 arbitrarily, so as to ensure that the lock body 214 is in a fixed state when the first pulling member 32 is pulled, and the bracket body 2131 can move upward relative to the lock body 214, so that unlocking can be achieved.

As shown in fig. 1-3, the first clamping arm assembly 10 further includes: the first clamping arm 11 is rotatably arranged on the base 12, one end of the first clamping arm is in transmission connection with the third transmission piece 13, and the first transmission piece 31 is in transmission connection with the base 12. The valve binder 100 further comprises: the third traction piece 33, the third traction piece 33 and the third transmission piece 13 are detachably connected in a transmission manner, so that the first clamping arm 11 is driven to open by the third transmission piece 13. That is, the third pulling member 33 can pull the third transmission member 13 to move upward, so as to drive the first clamping arm 11 to open in a rotating manner, so that the position of the first clamping arm 11 can be effectively controlled.

As shown in fig. 11, 14 and 15, the base 12 includes: the base 121 and the mounting plate 122, the mounting plate 122 is disposed on the base 121, the first clamping arm 11 is rotatably disposed on the mounting plate 122, and the third transmission member 13 is in transmission connection with the first clamping arm 11. The seat body 121 and the mounting plate 122 can be integrally formed, so that the structural strength of the base 12 can be improved. Also, the first transmission member 31 may be connected to or integrally formed with the seat body 121, so that the first clamping arm assembly 10 can be controlled to move between the separated position and the combined position by pulling the first transmission member 31.

As shown in fig. 11 and 15, there are two first clamping arms 11, two first clamping arms 11 are disposed oppositely, and the mounting plate 122 includes: first mainboard 1221 and first curb plate 1222, first mainboard 1221 is connected on pedestal 121 to the relative both sides of first direction extend, first curb plate 1222 has two, connect respectively in the first direction both ends of first mainboard 1221, and set up respectively in the second direction both sides of first mainboard 1221, every first arm lock 11 all rotationally connects on first mainboard 1221 and corresponding first curb plate 1222, set up the groove 125 of dodging the offside first arm lock 11 between first mainboard 1221 and the first curb plate 1222, first direction sets up perpendicularly with the second direction. The first main plate 1221 and a corresponding first side plate 1222 are provided with a pair of rotation shafts 124 at sides in the second direction, each first clamping arm 11 has a pair of arm portions, and the arm portions are provided with through holes corresponding to the rotation shafts 124, so that the first clamping arm 11 can rotate around the rotation shafts 124 through the through holes to be opened or clamped. Moreover, the avoiding groove 125 can avoid blocking the movement of the first clamping arm 11 at the opposite side, and provides a foundation for flexibly opening and clamping the first clamping arm 11.

As shown in fig. 12, the third transmission member 13 includes: the second main plate 131 and two second side plates 132, the second main plate 131 is located above the first main plate 1221 and extends to two opposite sides in the second direction, the first transmission member 31 penetrates through the second main plate 131 and the first main plate 1221 and is connected to the base body 121, the second side plates 132 are respectively connected to two sides in the second direction of the second main plate 131 and are vertically arranged downward relative to the second main plate 131, and an end of an arm of the first clamping arm 11 is in transmission connection with the second side plates 132. The third pulling member 33 can be detachably engaged with the second main plate 131 in a transmission manner, so that the third driving member 13 can be driven to move upwards when the third pulling member 33 is pulled, and the first clamping arm 11 can be controlled to open. Specifically, the third pulling member 33 is detachably engaged with the second main plate 131 in a driving manner, and a free end of the third pulling member 33 passes through the cavity 221 and then passes out of the upper end of the base 22 for pulling operation. The third pulling member 33 is a flexible elongated body, one of the free ends of the third pulling member 33 passes through the second main plate 131 and then is bent, so that the two free ends of the third pulling member 33 are aligned, and the two free ends of the third pulling member 33 are pulled at the same time to drive the third transmission member 13 to move upwards; the third pulling member 33 can be separated from the second main plate 131 by pulling one of the free ends of the third pulling member 33 alone. The mounting seat 23 closes the upper end opening of the base 22, and the mounting seat 23 is provided with a through hole through which the first transmission member 13, the first pulling member 32, and the third pulling member 33 pass, for the convenience of operation.

As shown in fig. 13, the end of the arm of the first clamping arm 11 is provided with a sliding slot 111, the end of the second side plate 132 away from the second main plate 131 is provided with a sliding portion 133, the sliding portion 133 is in sliding fit with the sliding slot 111, and the third pulling member 33 is in transmission connection with the second main plate 131. Specifically, the chutes 111 of the two first clamping arms 11 located on the same side are stacked, and two ends of the sliding portion 133 respectively penetrate through the chutes 111 of the two first clamping arms 11 on the corresponding side. When the third transmission member 13 axially moves on the first transmission member 31 under the traction action of the third traction member 33, the sliding portion 133 on the third transmission member 13 can slide in the sliding slot 111 of the first clamping arm 11, so as to drive the first clamping arm 11 to rotate around the rotating shaft 124 with the connecting position of the first clamping arm 11 and the base 12 as the rotating center, so that the first clamping arm 11 is opened, which is favorable for capturing the leaflet 500.

As shown in fig. 13, the sliding groove 111 includes a first groove section 112 and a second groove section 113, the first groove section 112 and the second groove section 113 are communicated, and an included angle between the first groove section 112 and the second groove section 113 is an obtuse angle. As shown in fig. 18b, when the first clamping arm 11 is located at the first closed position, the sliding portion 133 is engaged with an end of the first slot section 112 away from the second slot section 113, and the position is an initial position; as shown in fig. 19b, 20b and 21b, starting from the initial position, in the process that the sliding portion 133 slides from the end of the first slot segment 112 away from the second slot segment 113 to the end of the second slot segment 113 away from the first slot segment 112, the first clamping arms 11 are gradually opened, that is, the included angle between the two first clamping arms 11 is gradually increased; when the sliding part 133 slides to the end of the second slot segment 113 far away from the first slot segment 112, the included angle between the two first clamping arms 11 reaches 180 ° (or approaches 180 °); due to the avoidance groove 125, mutual interference between the two first clamping arms 11 is avoided, and therefore, the two first clamping arms 11 can be further opened, at this time, the sliding portion 133 gradually slides from one end of the second slot section 113 far away from the first slot section 112 to one end of the first slot section 112 far away from the second slot section 113, and the included angle between the two first clamping arms 11 is greater than 180 ° (one example of the included angle between the two first clamping arms 11 is greater than 180 ° is shown in fig. 14 and 15).

According to an alternative embodiment of the present invention, as shown in fig. 3, the first clamp arm assembly 10 further includes: the second elastic element 14, the second elastic element 14 is disposed between the base 12 and the third transmission element 13, and both ends of the second elastic element are respectively fixedly connected to the base 12 and the third transmission element 13, so as to provide a restoring force to the first clamping arm 11 from the open state to the clamping state through the third transmission element 13. Specifically, when the third transmission element 13 moves upward under the traction of the third traction element 33, the second elastic element 14 is stretched and deformed to generate an elastic force, and when the third traction element 33 cancels the traction on the third transmission element 13, the second elastic element 14 acts on the third transmission element 13, so that the third transmission element 13 moves downward, that is, the first clamping arm 11 returns to the clamping state from the opening state.

According to another alternative embodiment of the present invention, as shown in fig. 6 and 7, the second elastic members 14 are disposed on opposite sides of the mounting plate 122 and are located outside the first clamping arms 11, so as to provide the restoring force for the first clamping arms 11 to move to the first closed position through the second elastic members 14. When the third transmission member 13 is pulled, the two first clamping arms 11 are opened, and the two second elastic members 14 outside the first clamping arms 11 are pressed to deform (as shown in fig. 7), and when the third transmission member 13 is released, the two first clamping arms 11 are clamped under the elastic restoring force of the two second elastic members 14, so that the valve clamping device 100 is closed. The second elastic member 14 is an elastic body, specifically, an elastic sheet made of nitinol or other super elastic materials, and the lower end of the second elastic member 14 is fixed on the mounting plate 122 by means of inserting or welding.

As shown in fig. 11, the base 12 is formed with a groove 123, specifically, the groove 123 is formed on the base body 121 and penetrates through the upper surface of the mounting plate 122, the lower end of the first transmission member 31 passes through the second main plate 131 and then is connected to the bottom of the groove 123, the second elastic member 14 is sleeved on the first transmission member 31, the second elastic member 14 is accommodated in the groove 123, and two ends of the second elastic member are respectively and fixedly connected to the groove 123 and the second main plate 131, so as to provide a restoring force for the first clamping arm 11 to move to the first closed position through the third transmission member 13. The second elastic member 14 may be a spring. Specifically, when the first clamping arm 11 is opened outward from the first closed position, the second elastic element 14 is extended, so as to generate an elastic force, which facilitates the movement of the first clamping arm 11 to the first closed position.

It should be noted that the locking member 21 abuts against the third transmission member 13, so that when the third transmission member 13 moves upward, the third transmission member 13 moves upward with the locking member 21. After the traction is stopped, the second elastic element 14 provides a resetting force to the third transmission element 13, so that the third transmission element 13 moves downwards, i.e. the first clamping arm 11 is restored to the clamping state from the opening state; the first elastic element 24 provides a restoring force to the locking element 21, and under the limit of the limit block 224, the locking element 21 can be ensured to be restored to the position.

As shown in fig. 14 and 15, there are two first clamping arms 11, two first clamping arms 11 are oppositely arranged, and the maximum included angle between the two first clamping arms 11 in the rotation path of the first clamping arms 11 is greater than 180 °. Because, first arm lock 11 can avoid hindering each other with base 22 when rotating to can realize that the contained angle of first arm lock 11 exceeds 180, can increase the angle adjustment space of first arm lock 11 like this, dodge the chordae tendineae and hinder more nimble, it is in the rotation adjustment process moreover, can also play the effect of combing valve leaf 500.

Further, the second clamping arm 223 and the first clamping arm 11 are opened or clamped by different traction members, that is, the second clamping arm 223 is opened or clamped by the second traction member 34, and the first clamping arm 11 is opened or clamped by the third traction member 33, so that the first clamping arm 11 and the second clamping arm 223 do not have linkage, that is, the first clamping arm 11 and the second clamping arm 223 can be controlled to make different status instructions, so that the efficiency of catching the valve leaflet 500 can be improved, the implantation effect of the valve binder 100 can be improved, and the operation time can be shortened.

As shown in fig. 13, the first clamp arm 11 is provided with extensions 114 at opposite sides thereof. By providing the expanding portion 114 on the first clip arm 11, the catching space in the outer direction of the first clip arm 11 can be further expanded, so that the efficiency of catching the valve leaflet 500 can be improved, and the implantation and installation fixing time of the valve clip 100 can be shortened. The expansion part 114 may be a nickel titanium wire bent into an arc shape, which has corrosion resistance and certain rigidity, and can improve the service life of the valve clamping device 100. Of course, the extension portion 114 may be made of other materials having the same function.

In addition, as shown in fig. 5, the second clip arm 223 is provided with a barb 225 to be hung on the leaflet 500. By arranging the barbs 225 on the side of the second clamping arms 223 facing the first clamping arms 11, the engaging force and/or the friction force between the second clamping arms 223 and the valve leaflets 500 can be increased, the valve leaflets 500 are prevented from being unclamped, and the clamping force of the valve binder 100 on the valve leaflets 500 is improved.

Specifically, the barb 225 may be formed on the second clamping arm 223 by an integral molding method, or the barb 225 may be formed by the same material as or different material from the second clamping arm 223 and then connected to the second clamping arm 223. Further, the barbs 225 may also be ribs, bosses, or other regularly or irregularly distributed protrusions protruding from the second clamping arms 223 to improve the clamping force on the valve leaflet 500.

A valve clamping system according to an embodiment of the second aspect of the utility model, comprising: the valve clamping device 100, the dissociator 200, the fourth pulling member 300 and the operating handle 400 are described above, one end of the dissociator 200 is connected to the operating handle 400, and the other end of the dissociator 200 is connected to the second clamping arm assembly 20 and is separable from the second clamping arm assembly 20. The fourth pulling member 300 is detachably connected to the first transmission member 31 through the manipulating handle 400 and the dissociator 200. That is, the manipulation handle 400 may manipulate the valve clip 100 to move as a whole. In addition, the first traction member 32, the third traction member 33, the second traction member 34 and the fourth traction member 300 can extend out of the human body through the manipulation handle 400 for the operation of the operator. After the valve clamping device 100 is implanted in place, the first traction part 32, the second traction part 34, the third traction part 33 and the fourth traction part 300 can be separated from corresponding parts and then drawn out, and the dissociator 200 can be separated from the valve clamping device 100, so that the dissociator 200 can conveniently drive the control handle 400 to be separated from the valve clamping device 100, and the valve clamping device 100 can be left at the valve leaflet 500.

As shown in fig. 2, the mounting seat 23 is provided with a first engaging portion 231. By arranging the first clamping parts 231 on the mounting seat 23, the mounting seat 23 can be detachably mounted on the dissociator 200, that is, the valve clamp 100 can be detachably mounted on the dissociator 200 through the first clamping parts 231, so that after the valve clamp 100 is mounted in place, the dissociator 200 can be separated from the valve clamp 100, and the valve clamp 100 can be mounted and fixed.

As shown in fig. 16 and 17, the dissociator 200 includes: the elastic portion 220 is connected between the third main body 210 and the second clamping portion 230, and under the elastic force of the elastic portion 220, the movable end of the second clamping portion 230 is opened along the direction away from the central axis of the third main body 210. The second clamping arm assembly 20 is provided with a first clamping portion 231, and the first clamping portion 231 is in clamping fit with the second clamping portion 230.

Further, an extending portion is convexly disposed on the first clamping portion 231 toward the central axis of the third body 210, a fourth through hole 240 is disposed on the extending portion, and two second clamping portions 230 are disposed oppositely. When the fourth pulling member 300 passes through the fourth through hole 240, under the matching of the fourth pulling member 300 and the fourth through hole 240, the two oppositely arranged second clamping portions 230 can be fixed together, so that the first clamping portion 231 and the second clamping portions 230 can be clamped and matched. When the fourth pulling member 300 is separated from the fourth through hole 240, the two second clamping portions 230 are away from each other under the elastic force of the elastic portion 220, and the first clamping portion 231 is separated from the second clamping portions 230, so that the dissociator 200 can be separated from the valve clamp 100. In this way, the fourth traction member 300 can be separated from the first transmission member 31 and the dissociator 200 can be separated from the valve clamp 100 only by separating and taking out the fourth traction member 300, and the operation is simple, convenient and time-saving. Further, first joint portion 231 is the arch, has seted up logical groove on the active end of second joint portion 230, and when fourth traction piece 300 passed fourth perforation 240 for the active end of second joint portion 230 keeps at vertical decurrent state, protruding and logical spacing cooperation of groove, thereby can link together dissociator 200 and valve clamp 100.

Implantation of the valve clip 100 in an embodiment of the utility model is described below with reference to fig. 18 a-23 b:

the first implantation process: as shown in fig. 18a and 18b, the dissociator 200 is fixedly connected to the manipulating handle 400, and the mounting seat 23 of the valve clamp 100 is connected to the dissociator 200 through the first and second catching portions 231 and 230, so that the manipulating handle 400 can control the overall movement of the valve clamp 100. In addition, the first transmission member 31 is detachably connected to the fourth traction member 300, so that the overall movement of the first clamping arm assembly 10 can be controlled by the fourth traction member 300. At this time, the first clamping arm assembly 10 is in the separated position, the first clamping arm 11 is in the first folded position, and the second clamping arm 223 is in the second folded position, so that the valve clamping device 100 is always kept in a state of small overall radial size before entering the left atrium, in the process of running in a blood vessel through a sheath, and when being released from the sheath and initially entering the left atrium, and is convenient for implantation.

And (2) implantation process II: as shown in fig. 19a and 19b, when the first clip arm assembly 10 is in the engaging position, i.e., the distance between the first clip arm assembly 10 and the second clip arm assembly 20 is shortened, the overall axial dimension of the valve clip 100 is reduced, so that the valve clip 100 can be conveniently adjusted to enter the left ventricle. It should be noted that, in order to avoid the interference between the first clamping arm 11 and the second clamping arm 223 during the retraction of the first clamping arm assembly 10, the first clamping arm 11 may be opened and then retracted, and after the retraction is completed, the first clamping arm 11 is clamped.

And (3) a third implantation process: as shown in fig. 20a and 20b, at this time, the manipulation handle 400 adjusts the position so that the valve binder 100 may be correspondingly oriented toward the leaflet 500. Also, before the first clip arm assembly 10 passes through the mitral annulus, the first clip arm 11 is opened to a suitable angle, which may be 120 °, for example, so that during the process of entering the left ventricle, the first clip arm 11 has a combing effect on the leaflets of the mitral valve, which may be oriented downward for subsequent clipping of the leaflets 500.

And (4) implantation process four: as shown in fig. 21a and 21b, at this time, the first clip arm 11 is in an open state, the second clip arm 223 is also in an open state, and the first clip arm assembly 10 is located at a separated position, so that the distance between the first clip arm 11 and the second clip arm 223 is increased, thereby facilitating the grasping of the valve leaflet 500 by the first clip arm 11 and the second clip arm 223.

The implantation process is five: as shown in fig. 22a and 22b, at this time, the lock member 21 is unlocked by pulling the first pulling member 32, so that the first transmission member 31 can move up and down relative to the lock member 21, and the first transmission member 31 is pulled by the fourth pulling member 300, so that the distance between the first clip arm assembly 10 and the second clip arm assembly 20 is shortened, so that the leaflet 500 can be clamped between the first clip arm 11 and the second clip arm 223.

The implantation process is six: as shown in fig. 23a and 23b, at this time, the third traction element 33 connected to the third transmission element 13 cancels traction on the third transmission element 13, the second traction element 34 connected to the second clamping arm 223 cancels traction on the second clamping arm 223, so that the first clamping arm 11 is clamped under the elastic force of the second elastic element 14, and the second clamping arm 223 is opened under the elastic force thereof, i.e., is closed to the first clamping arm 11, so that the first clamping arm 11 and the second clamping arm 223 clamp the valve leaflet 500.

In addition, the first traction piece 32, the second traction piece 34 and the third traction piece 33 are pulled out, the fourth traction piece 300 is separated from the first transmission piece 31, the fourth traction piece 300 is pulled out, the fourth traction piece 300 is separated from the fourth through hole 240, and therefore the second clamping portion 230 is separated from the first clamping portion 231 under the elastic force of the elastic portion 220, and the separation of the dissociator 200 from the valve clamp 100 can be achieved.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A valve clip, comprising:

a first clamp arm assembly, the first clamp arm assembly comprising: a first clamp arm;

a second clamp arm assembly, the second clamp arm assembly comprising: a second clamp arm;

one end of the first transmission piece is in transmission connection with the first clamping arm assembly, and the first transmission piece penetrates through the second clamping arm assembly; wherein the content of the first and second substances,

the first clamping arms and the second clamping arms are in one-to-one correspondence, one first clamping arm and one second clamping arm form a group of clamps, and under the transmission action of the first transmission piece, the first clamping arm assembly can move relative to the second clamping arm assembly along the extension direction of the first transmission piece, so that the first clamping arm assembly has a separation position and a combination position.

2. The valve clip of claim 1 wherein the first clip arms have a first collapsed position, the second clamping arm is provided with a second furled position, one end of each of the first clamping arm and the second clamping arm is arranged close to the first transmission piece, the other end of each of the first clamping arm and the second clamping arm is arranged far away from the first transmission piece, when one end of the first clamping arm, which is far away from the first transmission piece, rotates along the direction close to the upper end of the first transmission piece, the first clamping arm clamps, when one end of the second clamping arm, which is far away from the first transmission piece, rotates along the direction close to the upper end of the first transmission piece, the second clamping arm clamps, when the first clip arm assembly is in the disengaged position, the first clip arm may be in the first stowed position and the second clip arm may be in the second stowed position to reduce the radial dimension of the first clip arm assembly and the second clip arm assembly.

3. The valve clip according to any one of claims 1 and 2, wherein the second clip arm assembly further comprises: the locking piece penetrates through the first transmission piece and selectively locks the first transmission piece;

the valve binder further comprises: the first traction piece is connected to the locking piece so as to pull the locking piece to unlock the first transmission piece.

4. The valve clip of claim 2, wherein the second clip arm assembly further comprises: the second clamping arm is arranged on the base, hollow holes are distributed in the base, so that the base forms an elastic base, and when the second clamping arm is located at the second folding position, the base and the second clamping arm are arranged in an interference mode.

5. The valve clip of claim 4 wherein said base is provided with a tongue having only a bottom edge connected to said base, said tongue constituting said second clip arm;

the valve clamping device also comprises a second traction piece which is in transmission connection with the second clamping arm, and the second clamping arm can be clamped by pulling the second traction piece.

6. The valve clip according to any one of claims 1 and 2, wherein the first clip arm assembly further comprises: the first transmission piece is in transmission connection with the base, the first clamping arm is rotatably arranged on the base, and one end of the first clamping arm is connected with the third transmission piece;

the valve binder further comprises: and the third traction piece is in transmission connection with the third transmission piece, and drives the third transmission piece to move so as to drive the first clamping arm to rotate.

7. The valve clip of claim 6, wherein the base comprises: pedestal and mounting panel, the mounting panel includes: first mainboard and first curb plate, first mainboard connect in on the pedestal to extend to the relative both sides of first direction, first curb plate have two, connect respectively in the first direction both ends of first mainboard, and set up respectively in the second direction both sides of first mainboard, first arm lock is two, two first arm lock sets up relatively, every first arm lock all rotationally connect in first mainboard and corresponding on the first curb plate, first mainboard and corresponding set up between the first curb plate dodge the offside the groove of dodging of first arm lock, first direction with the second direction sets up perpendicularly.

8. The valve clip of claim 7, wherein the third transmission comprises: the second main board is located above the first main board and extends towards two opposite sides of the second direction, the two second side boards are respectively connected to two sides of the second direction of the second main board and are arranged vertically and downwards, a sliding groove is formed in the end portion of the first clamping arm, a sliding portion is arranged at one end, far away from the second main board, of the second side board, the sliding portion is in sliding fit with the sliding groove, and the third traction piece is in transmission connection with the second main board.

9. The valve clip of claim 8, wherein the first clip arm assembly further comprises: the seat body is provided with a groove and penetrates through the upper surface of the first main board, and one end of the first transmission piece penetrates through the second main board and then is connected to the bottom of the groove;

the second elastic piece is sleeved on the first transmission piece, is accommodated in the groove, and is fixedly connected with the groove and the second main board at two ends respectively, so that a resetting force for the first clamping arm to move to a first folding position is provided by the third transmission piece;

or, the second elastic part is arranged on two opposite sides of the mounting plate and is positioned on the outer side of the first clamping arm, so that the second elastic part provides the resetting force for the first clamping arm to move to the first furling position.

10. A valve clamping system, comprising:

the valve binder of any one of claims 1-9;

the dissociator is connected with the second clamping arm component and can be separated relative to the second clamping arm component;

a manipulation handle on which the dissociator is disposed;

and the fourth traction piece is arranged in the operating handle and is separably connected with the first transmission piece.

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