CN115844591A - Artificial chordae tendineae implanting device capable of clamping and fixing valve - Google Patents

Abstract

The invention provides a prosthetic chordae implantation device capable of clamping and fixing a valve, which comprises: the clamping device comprises a handle operating device at the near end, a clamping device at the far end, at least one group of puncturing devices and a control device linked with the clamping device, wherein the clamping device comprises a first chuck and a second chuck, the control device controls the relative displacement of the first chuck and the second chuck through a linkage mechanism, and the displacement is limited to X1, so that the clamping device can clamp valves with different thicknesses. Through the clamping structure of the implantation device, the applicability and compatibility of implanting the artificial chordae tendineae into the valves with different thicknesses are improved.

Description

Artificial chordae tendineae implanting device capable of clamping and fixing valve

Technical Field

The invention relates to the technical field of medical instruments, relates to an instrument for repairing heart valve defects, and particularly relates to an artificial chordae tendineae implantation device capable of clamping and fixing a valve.

Background

Mitral insufficiency is one of the most common heart valve diseases at present, and the main causes are rheumatic heart disease, mitral valve myxoid degeneration, ischemic heart disease, cardiomyopathy and the like, which cause the lesions of valve rings, valve leaflets, chordae tendineae and papillary muscles in the mitral valve structure, and the valve leaflets of the mitral valve cannot be completely closed. Surgery is an effective method for treating mitral insufficiency, but the surgery causes great trauma to human bodies, and has more complications and higher mortality rate for elderly patients and patients with more complications. Therefore, the treatment through minimally invasive intervention is the better choice for most heart diseases at present, and the main intervention treatment modes include artificial chordae tendineae implantation, mitral valve annuloplasty, mitral valve rim-to-rim repair and the like. The artificial chordae tendineae implanted on the valve leaflets can effectively treat mitral insufficiency caused by chordae tendineae fracture, valve leaflet prolapse and the like, and meanwhile, the physiological integrity of the mitral valve structure is maintained.

The existing chordae tendineae implantation suturing device has some problems in the process of puncturing the suture:

for example: the existing technology of the artificial chordae implantation suturing device completes valve perforation suturing through the barb-shaped needle head, the puncture point of the scheme is large, the damage to the valve is large, the risk of valve tearing exists, the success rate of hooking the artificial chordae by the needle head is not high, the success rate of an operation is not high, and the operation time is prolonged. And only one group of artificial chordae tendineae can be implanted at a time, which results in the need to use multiple sutures for each operation, and the operation is complicated and long-lasting.

For another example: the existing artificial chordae tendineae implantation device has certain limitation on the thickness of a valve, and chordae tendineae implantation of the valve in different thicknesses or different states cannot be compatible, so that the limitation is high; the valve with different thicknesses can be rigidly clamped only and cannot be fixed for a long time and released at any time, secondary damage can be caused to the valve which continuously moves in the process of implanting the chordae tendineae, and the success rate of the operation is greatly reduced; and the valve can be punctured rigidly, and the puncture hole of the valve is enlarged and even torn along with the continuous movement of the valve.

Disclosure of Invention

The invention mainly provides a prosthetic chordae implantation device capable of clamping and fixing a valve, aiming at solving the technical problems that the thickness of the clamped valve is limited to a certain extent, chordae implantation of valves with different thicknesses or different states cannot be compatible, the limitation is high, the valves with different thicknesses can be only rigidly clamped and cannot be fixed for a long time and released at any time, secondary damage can be caused to the continuously moving valves of a human body in the chordae implantation process, and the success rate of an operation is greatly reduced.

In order to solve the technical problems, the invention adopts a technical scheme that:

the artificial chordae tendineae implanting device capable of clamping the fixed valve comprises a handle operation device at the proximal end, a clamping device at the distal end and at least one group of puncture devices, and is characterized by further comprising a control device in linkage with the clamping device, wherein the clamping device comprises a first chuck and a second chuck, the control device controls the relative displacement of the first chuck and the second chuck through a linkage mechanism, and the displacement is limited to X1, so that the clamping device can clamp valves with different thicknesses.

In one embodiment, the control device is located in the handle clamping operation device, and the control device comprises a rotatable member which is located on the surface of the handle clamping operation device and is operable, a rotatable member connecting member which is located inside the handle clamping operation device and is connected with the rotatable member, and a sliding member which is linked with the rotatable member connecting member.

In a specific embodiment, the artificial chordae implantation device further comprises a clamping control member connected to the first collet, and the slider is connected to the clamping control member and controls the relative position of the first collet to the second collet via the clamping control member.

In one embodiment, the rotating member has a rotating shaft located in the handle operating device, and the rotating member moves circularly around the rotating shaft as a central axis.

In a specific embodiment, the handle operating device includes an upper housing assembly and a lower housing assembly, the upper housing assembly and the lower housing assembly form a first groove and a second groove, the rotating member has a third groove and a fourth protrusion, the rotating member has an initial position state, the rotating member is located at the initial position state, the third groove is in interference fit with the first groove, and the fourth protrusion is in interference fit with the second groove.

In one embodiment, the rotating member has a connecting hole, and the rotating member connecting member has one end connected to the connecting hole and one end connected to the sliding member.

In a specific embodiment, the rotation angle of the rotating member is set to α, the horizontal displacement of the connecting hole is set to X2, the horizontal displacement of the rotating member connecting member is X3, and X2= X3.

In one embodiment, the slider has a horizontal sliding displacement set to X4, and the X3= X4= X1.

In a specific embodiment, further comprising a resilient member located at the proximal end of the slider, the slider compresses the resilient member when the slider is displaced proximally, setting the compression displacement to X5, with X5= X1.

In a specific embodiment, the rotating member is an elastic member, the rotating member has a reset state, and when the rotating member is located in the reset state, the rotating member is in interference fit with the upper shell assembly, and at this time, the rotating member is in an initial position state.

In a specific embodiment, the valve capturing feedback device further comprises a valve capturing feedback device for determining whether the valve is captured correctly, the handle operating device further comprises a feedback operating mechanism, the feedback operating mechanism is connected with the valve capturing feedback device, the valve capturing feedback device comprises a limiting block located at the distal end of the sliding block, the limiting block has a first state and a second state, the sliding block has a groove adapted to the limiting block, and when the limiting block is located in the first state, the limiting block can pass through the groove of the sliding block.

In a specific embodiment, the feedback operating mechanism comprises a detection key, the clamping control element is connected with a rotation limiting structure and a torsion spring structure, the torsion spring structure is pre-tightened and installed in the lower shell assembly in a limiting mode, and the torsion spring structure is connected with the detection key.

In a specific embodiment, the detection key has an initial pointing direction and a feedback pointing direction, and when the detection key is in the initial pointing direction, the limit block is in a first state;

when the detection key is in the feedback pointing direction, the clamping control piece rotates by a corresponding angle, so that the limiting block is in the second state.

The invention has the beneficial effects that: in contrast to the state of the art, embodiments of the present invention provide a prosthetic chordae implantation device for clamping a fixed valve, comprising: the device comprises a handle operating device at the proximal end, a clamping device at the distal end, at least one group of puncture devices and a control device linked with the clamping device, wherein the clamping device comprises a first chuck and a second chuck, and the control device controls the relative positions of the first chuck and the second chuck through a linkage mechanism so that the clamping device can clamp valves with different thicknesses; the rotating part is an elastic component and has a reset state, when the rotating part is located in the reset state, the rotating part is in interference fit with the upper shell assembly, at the moment, the rotating part is in an initial position state, and the flexible clamping of the valve is realized by utilizing the structural elasticity of the rotating part.

Through the flexible clamping structure of the implantation device, the artificial chordae tendineae can be implanted into the valves with different thicknesses, the valves which move continuously and have different thicknesses in a human body can be flexibly clamped, the valves can be fixed for a long time and released at any time, the valves with different thicknesses are protected, the valves can be clamped and stabilized for a long time, and the probability of expanding a puncture hole due to the movement of the valves in the puncture process is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Figure 1 is a schematic view of the artificial chordae implantation device of the present invention in general;

figure 2 is a schematic view of the artificial chordae tendineae implanting device clamping device of the present invention;

figure 3 is a schematic view of the internal cross-section of the second collet of the artificial chordae implantation device of the present invention;

figure 4 is a schematic view of the artificial chordae implantation device of the present invention in an initial state when not clamped;

figure 5 is a schematic view of a feature of a rotating member of the artificial chordae implantation device of the present invention;

figure 6 is a schematic representation of the features of the upper housing assembly of the artificial chordae implantation device of the present invention;

figure 7 is a schematic view of the initial internal state of the artificial chordae implant device of the present invention prior to detection;

figure 8 is a schematic view of the artificial chordae implantation device of the present invention with the clamping device open;

FIG. 9 is a schematic view of the rotational wrenching member, the rotational wrenching member connecting member and the sliding member of the artificial chordae implantation device of the present invention in relation to movement;

FIG. 10 is a schematic view of the hole position before the connecting hole of the rotating spanner member of the artificial chordae implantation device of the present invention moves;

FIG. 11 is a schematic view of the hole position after the connecting hole of the rotating wrenching member of the artificial chordae implantation device of the present invention is moved;

figure 12 is a schematic view showing the comparison of the hole site before and after the movement of the connecting hole of the rotary toggle piece of the artificial chordae tendineae implantation device of the present invention;

FIG. 13 is a schematic view of the relative positions of the rotating spanner member and the rotating spanner member connecting member of the artificial chordae implantation device of the present invention before movement;

FIG. 14 is a schematic view of the rotated trigger and the rotated trigger connector of the artificial chordae implantation device of the present invention in relative position after movement;

FIG. 15 is a schematic diagram showing a comparison of relative positions of a rotating spanner member and a rotating spanner member connecting member of the artificial chordae implantation device of the present invention before and after movement;

figure 16 is a schematic view of a rotating trigger attachment of the artificial chordae implantation device of the present invention;

figure 17 is a schematic view of the fixed details of the rotating trigger of the artificial chordae implantation device of the present invention.

Reference numerals: 1. a clamping device; 2. a handle operating device; 3. a rotating member; 4. a puncture needle device; 6. detecting a key; 7. a conduit; 8. a slider; 9. a rotating member connecting member; 111. a first chuck; 112. a second chuck; 13. a slider stopper 1; 14. a slider stopper 2; 15. clamping the control member; 19. a limiting sleeve 1; 20. a limiting sleeve 2; 21. an upper housing assembly; 23. a slider elastic member 1;24 the slider elastic member 2; 25. a rotation limiting structure 1; 26. a rotation limiting structure 2; 27. sewing a thread box; 35. a third groove; 36. a rotating member connecting hole; 37. a fourth protrusion; 38. a first groove; 39. a second groove; 81. a slider groove; 91. a rotating member connecting member and a sliding member connecting rod; 92. the rotating piece connecting piece is connected with the rotating piece connecting hole connecting rod; 100. a slider horizontal movement line; 120. hole position after the rotating member connecting hole moves; 130. a rotating member connecting hole moves to a front hole position; 611. detecting the pointing direction fed back by the key; 612. the initial pointing direction of the key is detected.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings and embodiments. In particular, the following embodiments are merely illustrative of the present application, and do not limit the scope of the present application. Likewise, the following embodiments are only some embodiments of the present application, not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the protection scope of the present application.

An element is said to be "secured to" or "disposed on" another element, either directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of this application, "plurality" means at least two, in a manner such as two, three, etc., unless specifically limited otherwise. All directional indicators in the embodiments of the present application (such as up, down, left, right, front, rear \8230;) are only used to explain the relative positional relationship between the components, the motion, etc. at a particular attitude (as shown in the drawings), and if the particular attitude is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. A process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to the listed steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The terms "axial" and "radial" refer to the length of the entire device or component as "axial" and the direction perpendicular to the axial direction as "radial".

The term "circumferential" refers to along the circumferential direction.

"distal" and "proximal" are relative to the operator, and are proximal to the operator and distal to the operator.

The above terms are for convenience of description only and should not be construed as limiting the present technical solution.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, the assembled view of the artificial chordae tendineae implanting device capable of clamping and fixing the valve provided by the invention comprises a distal valve clamping device 1, a proximal handle operating device 2, and at least one set of valve puncturing devices 4, which comprises a left puncturing assembly and a right puncturing assembly. The handle operating device is provided with a rotating part 3, wherein one embodiment is a wrenching part which can be rotated by a user.

In one embodiment, the handle operating device of the present invention comprises an upper shell component 21, a lower shell component, a clamping piece, a feedback operating mechanism and a torsion spring component, wherein the distal valve clamping device 1 is connected with the proximal handle operating device 2 through a conduit 7, the conduit 7 is a hollow structure, and a clamping control piece 15 is arranged in the conduit. The upper shell component 21, the lower shell component, the clamping piece and the feedback operating mechanism 6 are all made of high polymer materials through high-temperature high-pressure injection molding, and the torsion spring component is made of metal materials. The feedback operating mechanism comprises a detection key 6 and a torsion spring assembly which are arranged in the clamping device 1 through a clamping control part 15, and a clamping piece is in interference fit with or fixed with the lower shell assembly in a viscose mode.

Further, in order to implant multiple groups of sutures to form the artificial chordae tendineae M at one time, the clamping control member 15, the valve puncture device 4 and the valve capture feedback device are all provided in multiple groups, and preferably, the clamping control member 15, the valve puncture device 4 and the valve capture feedback device are all provided in pairs. I.e. the pinch control member 15, the valve puncture device 4, the valve capture feedback device, are arranged in sets, preferably in pairs, at intervals.

As shown in fig. 2, the clamping device 1 includes a first chuck 111 and a second chuck 112 located at the far end, a stopper 13 and a stopper 14 located at the far end of the slider, a rotation limiting structure located at the near end of the slider, wherein one of the rotation limiting structures is a rotation stopper 25 and a rotation stopper 26, and a torsion spring structure connected with the rotation stopper, the torsion spring structure specifically can be a torsion spring, and has two torsion springs connected with the rotation stopper 25 and the rotation stopper 26 respectively, the torsion spring pretension is connected with the rotation stopper and is installed in the lower shell assembly, and the rotation stopper limits the pretension rotation displacement of the torsion spring. The proximal end of the slider is provided with an elastic member, in one embodiment a spring, the slider is connected with the springs 23 and 24 through a clamping control member 15, the proximal movement of the slider 8 compresses the springs 23 and 24, and the distal end of the slider 8 is provided with a stopper 13 and a stopper 14 for stopping the slider 8. The slider 8 is connected with a rotating member connecting member 3, and specifically, the upper surface of the slider 8 is provided with a groove. One embodiment of the rotating link is a toggle link, which is a "n" type structure having a rotating link and slider link 91 and a rotating link and rotating link connection hole link 92, wherein the rotating link and slider link 91 are connected to a slider upper surface groove, and the displacement of the toggle link drives the displacement of the slider. The proximal end of the grip control 15 is connected to a suture box.

As shown in fig. 3, the distal holding device is used to hold the valve, and after holding, the valve is punctured by the valve puncturing device 4 and the artificial chordae tendineae M are tied off the valve through the outside of the pull-out body and then returned to the valve suture site. The clamping means comprises a distally arranged first clamping head 111 and an opposite second clamping head 112, both provided with clamping surfaces, which are opposite for clamping the valve. The first clamping head 111 has a conical shape, and the second clamping head 112 is fixedly connected with the catheter 7 or integrated with the catheter. The clamping surfaces of the first clamping head 111 and the second clamping head 112 are inclined surfaces, preferably 60 degrees, and for firm clamping, the clamping surfaces of the two clamping heads are preferably toothed surfaces to increase the clamping force. The clamping device can be made of high polymer materials such as ABS, PC, PEEK and the like, and metal materials such as stainless steel, cobalt-chromium alloy and the like.

The clamping control member 15 is fixed on the first clamping head 111, the clamping control member 15 is sequentially arranged in the first clamping head 111 and the conduit 7 in a penetrating way, the far end of the clamping control member 15 is fixedly connected with the second clamping head 112, the near end of the clamping control member 15 penetrates through the conduit 7 to be connected with the clamping control device, the clamping control device comprises a rotating member 3 positioned on the surface of an upper shell of the near-end handle operation device, and under the action of the clamping control device, the first clamping head 111 and the second clamping head 112 are folded, clamped or separated. The clamping control member 15 is rod-shaped, and may be a solid rod or a hollow rod, and in order to make full use of the respective components, it is preferable that the clamping control member 15 is a hollow rod in which a suture is threaded as the artificial chordae tendineae M. The artificial chordae tendineae M are generally e-PTFE suture or PET suture and have an outer diameter of 0.2-0.5mm. The number of the clamping control members 15 is at least one, and a plurality of the clamping control members can be arranged according to the number of the artificial chordae tendineae M. The connection mode of the clamping control member 15 and the first clamping head 111 mainly comprises welding, clamping, bonding and the like.

Further, the surface of the first clamping head 111 is made of a polymer material, the clamping control piece 15 is made of a metal tube, the metal tube and the polymer material are formed by combining a high-temperature high-pressure injection molding and beer pouring process, a hole capable of fixing a buckle and a channel capable of passing an artificial chordae tendineae are reserved inside the first clamping head 111, as shown in fig. 3, the metal tube and the polymer material of the second clamping head 112 are also manufactured in the same manner, and a polygonal rod capable of detecting whether the valve is captured or not is arranged inside the metal tube. The rotation limiting block 25, the rotation limiting block 26, the slider limiting block 13, and the slider limiting block 14 may be made of metal materials, and are welded and then fixed to the clamping control member 15 of the first chuck 111, or may be made of a polymer material pipe and fixed to the clamping control member 15 through a thermal shrinkage process. Stop collars 19, 20 are also fixed to the metal tube holding the control member in the same way. After the first chuck 111 is mounted, the first chuck 111, the slider stopper 13, the slider stopper 14, the slider 8, the spring 23, the spring 24, the stopper sleeve 19, and the stopper sleeve 20 are fixed to 2 metal tubes of the second chuck 112 sequentially by a specific tool holder in the order shown in the drawing, and a clamping device is manufactured.

And (3) integrally assembling, namely, after the left puncture component and the right puncture component penetrate through the clamping piece and are inserted into a clamping component channel arranged on the lower shell component 21, then installing the rotary pull fastener 3 on the rotary pull fastener connecting piece 9, installing the upper shell component 21, and combining the components together by using screw connection or ultrasonic welding to form a rigid main body.

The first embodiment is as follows:

as shown in fig. 5, for an original state diagram of the artificial chordae implantation device during a non-operation process, the rotation element 3 may specifically be a rotation plate fastener, the handle operation device 2 includes an upper casing component 21 and a lower casing component, the groove structures of the upper casing component 21 and the lower casing component form a first groove 38 and a second groove 39, the rotation plate fastener 3 has a third groove 35 and a fourth protrusion 37 which are adapted to each other, at this time, the rotation plate fastener 3 is in an initial position state, that is, an original state of the artificial chordae implantation device during a non-operation process, at this time, the third groove 35 of the rotation plate fastener 3 is in interference fit with the first groove 38 of the upper casing component and the lower casing component, and the fourth protrusion 37 of the rotation plate fastener 3 is in interference fit with the second groove 39 of the upper casing component and the lower casing component. Inside the artificial chordae implantation device, the rotating spanner member 3 forms a linkage structure with the second jaw 112 of the clamping device through the rotating spanner connecting member 9. As can be seen from the exterior of the artificial chordae implantation device, the rotation fastener 3 performs a circular motion by using the two circumferential characteristic grooves of the superior and inferior shells as supporting points through the rotation shaft, i.e. the central axis of the third groove 35 of the rotation fastener, and when the rotation fastener 3 moves distally, the first collet 111 and the second collet 112 of the distal clamping device generate a relative displacement, set as X1, through the clamping control member 15 located inside the first collet 111, as shown in fig. 9, for clamping the valve.

Furthermore, during the distal movement of the rotating fastening member 3, the rotating fastening connector 9 connected to the rotating fastening member 3 also starts to move, specifically, one end of the rotating fastening member 3 has a connection hole 36, one end of the fastening connector 9 is connected to the connection hole 36, and the other end of the rotating fastening member 3 drives the connection hole 36 to move during the movement, so as to generate a horizontal displacement, which is set as X2. As shown in fig. 10. Before the rotating plate fastener 3 does not move, the horizontal included angle between the wrench of the rotating plate fastener 3 and the artificial chordae tendineae implantation device is set as a1, after the rotating plate fastener 3 moves towards the far end, the horizontal included angle between the wrench of the rotating plate fastener 3 and the artificial chordae tendineae implantation device is changed at the moment and is set as a2, the connecting hole site 130 of the rotating plate fastener also moves along with the rotating plate fastener, as shown in fig. 12, at the moment, the moving distance of the front and rear hole sites of the connecting hole in the horizontal direction is X2. Further, the wrench connecting member 9 cooperating with the rotating wrench member 3 simultaneously generates a horizontal displacement, which is set as X3, as shown in fig. 14-16, if the horizontal displacement X2 of the connecting hole 36 is larger, the horizontal displacement X3 of the rotating wrench connecting member 9 moving to the far end is larger, because the whole clamping device is rigidly connected, the other end of the rotating wrench connecting member 9 is connected with the sliding member 8 in the first clamping head 111, and is embedded in the structural groove of the sliding member, the sliding member 8 can only perform horizontal movement under the limit of the clamping control member 15, the horizontal displacement generated by the sliding member 8 is set as X3, and the displacement generated by the first clamping head 111 and the second clamping head 112 of the far end clamping device is set as X1, so that it can be obtained that X2= X3= X4= X1, that the rotation angle change a1 → a2 generated by the rotating wrench member 3 drives the connecting hole 36 at one end of the rotating wrench member to generate a horizontal displacement X2, which is equal to the horizontal displacement X3 generated by the connecting member 9 connected with the connecting hole at the connecting hole, that the sliding member 8 generates a horizontal displacement, which is equal to the thickness generated by the clamping device, and the thickness generated by the clamping device is equal to the thickness of the clamping device.

The distance X1 represents the range of thicknesses over which the prosthetic chordae implant device can grip the valve, with the greater X1 the greater the range over which the valve can be gripped.

Further, since X2= X3= X4= X1, in a case where the displacement X2 of the rotating toggle connector connecting hole 36 is not changed, as shown in fig. 17, increasing the distance of the toggle connector L1 increases the distance of the horizontal displacement X3 of the rotating toggle connector, that is, increases the thickness range in which the valve can be clamped.

Further, under the condition that L1 in the rotating wrenching piece connecting piece is not changed, as shown in fig. 13, the distance between the center of the rotating wrenching piece connecting hole and the center of the rotating shaft of the rotating wrenching piece is increased by R1, and the distance of the horizontal displacement X2 generated corresponding to the connecting hole is increased immediately, so that the distance of the horizontal displacement X3 of the rotating wrenching piece connecting piece can be increased, namely the thickness range of the clamping valve is increased.

Furthermore, under the condition that the distance R1 between the center of the circle of the connecting hole 36 of the rotary toggle piece and the center of the rotating shaft of the rotary toggle piece, the horizontal displacement X2 generated by the corresponding connecting hole, and the rotary toggle connecting piece L1 and the sliding piece are not changed, the distance between the center of the groove of the sliding piece and the rotating center of the toggle piece is reduced and set as R2, so that the rotating angle of the rotary toggle piece can be increased, namely the difference value of a2-a1 is increased, the distance of the displacement X2 of the connecting hole of the rotary toggle piece can be increased, namely the distance of the relative displacement X1 generated by two chucks of the clamping device is increased, namely the thickness range of the clamping valve is increased.

Example two:

in the actual operation process, the valve is in continuous motion, and in a human body, the clamping device is operated by rotating the pulling fastener every time, and whether the valve is successfully captured needs to be detected when the clamping device tries to clamp the valve, so the artificial chordae tendineae implanting device further comprises a valve capturing feedback device for judging whether the valve is correctly captured, and a feedback operation mechanism connected with the valve capturing feedback device.

When the artificial chordae tendineae implanting device is inserted into the valve from the apex of the heart with the first clamping head 111 and the second clamping head 112 of the clamping device in the closed state, and the ultrasonic device is arranged beside the heart to assist in probing, when the artificial chordae tendineae implanting device is inserted into a preset position, the rotating spanner buckle piece 3 is pulled, the first clamping head 111 and the second clamping head 112 are opened, and the valve is clamped. As shown in fig. 8, the slider 8 moves distally under the combined action of the rotating wrench member 3 and the rotating wrench connecting member 9, and at this time, the slider stoppers 13 and 14 are in the first state, which is preferably the horizontal state, and the slider has a groove 81 corresponding to the stoppers, so that the slider stoppers can pass through the groove reserved in the slider without any interference.

Further, after the first and second clamping heads 111 and 112 clamp the valve, in the feedback operation mechanism, which is a detection button 6 in one embodiment, before the detection button 6 is released, the sliding member 8 is controlled to move proximally by rotating the fastening member 3, without any interference in the whole process, and further, the clamping device is closed by rotating the fastening member 3, so as to clamp the valve. The valve is an elastic body formed by biological cells, in order to better fix the valve which continuously moves in the heart, after the rotating spanner 3 clamps the valve, the valve needs to be flexibly fixed, at the moment, the rotating spanner 3 is continuously pulled to the near end with slight force, one side of a sliding part 8 connected with the rotating spanner is provided with an elastic component, preferably a spring structure, a spring 23 and a spring 24, at the moment, the spring is subjected to sliding, 8 is compressed to generate reverse pressure, the compression displacement is set to be X5, when the compression displacement is X5= X1, namely the displacement of a first chuck 111 and a second chuck 112 of a clamping device, the rotating spanner is in a reset state, the rotating spanner is in interference fit with an upper shell assembly, at the moment, the rotating spanner 3 is in an initial position state, namely, a third groove 36 of the rotating spanner is in interference fit with a first groove 38 of an upper shell assembly and a lower shell assembly of a handle operation device, a fourth protrusion 37 of the rotating spanner is in interference fit with a second groove 39 of the upper shell assembly of the handle operation device, and the structure utilizes the elasticity of the structure to perform interference fit with the upper shell assembly to form an interference fit, so that the clamping device can be in an interference fit state, and the rotating spanner can be in a strong clamping force is released, and the rotating spanner 3, namely, and the rotating spanner is improved.

Further, as shown in fig. 17, the detection key 6 has an initial pointing direction 612 and a feedback pointing direction 611, the detection key 6 is connected with a rotation limiting structure and a torsion spring structure, the rotation limiting structure is a rotation limiting block 25, 26, as shown in the figure, before the detection key 6 is not released, the detection key 6 is pre-assembled into a transverse slot of the lower shell component through the limiting of the rotation limiting block 25, 26 and the compression of the torsion spring, and at this time, the detection key 6 points to the initial pointing direction 612, specifically, may be a red identification surface in the lower shell component. When the detection valve is clamped in place, the detection key 6 is pushed to the near end from the initial pointing direction 612 to one side and released, the detection key 6 rotates a certain angle, preferably 90 degrees, so that the pointer just points to the feedback pointing direction 611, specifically, a green identification surface at one position of the lower shell assembly, at this time, under the action of the torsion spring, the rotation limiting blocks 25 and 26 rigidly connected with the clamping control member metal tube 15 in the first clamping head 111 and the sliding member limiting blocks 13 and 14 also rotate 90 degrees at the same time, at this time, the sliding member limiting blocks 13 and 14 just clamp the other side of the sliding member 8 connected with the rotation pulling member 3, the sliding member limiting blocks 13 and 14 are in the second state, and in the above state, if the rotation pulling member 3 is tried to be pushed to the far end again, the sliding member rigidly connected in the first clamping head is clamped by the sliding member limiting blocks 13 and 14, and cannot be opened again.

Further, the clamping device clamps the valve by an opening distance X1, and in the process that the rotating spanner 3 returns to the clamping position, the springs 23 and 24 connected with the sliding part 8 are compressed, and the compressed displacement X5 just offsets the opening distance of the clamping device, namely X5= X1, so that the rotating spanner 3 can restore the clamping position to achieve the reset state, and can form stable flexible clamping force for clamping the valve by the back compression force of the springs 23 and 24. At this time, the sliding part limiting blocks 13 and 14 form a clamping position with the sliding part 8 of the first chuck 111 under the rotation of the detection key 6, and are just clamped at the other side of the compressed springs 23 and 24 connected with the sliding part 8, so that the compressed springs are clamped, and the stability of the valve fixed by the trigger part is indirectly improved. And on the outer surface of the artificial chordae tendineae implanting device, the clamping device clamps the upper clamp of the valve, synchronously clamps the valve in the process that the rotating pulling fastener 3 moves towards the near end, finally successfully clamps the valve by rotating the pulling fastener 3, indicates the feedback pointing direction 611 after releasing the detection key 6, and indicates that the clamping device successfully captures and fixes the valve.

In contrast to the prior art, embodiments of the present invention provide a prosthetic chordae implantation device capable of clamping a fixed valve, comprising: the device comprises a handle operating device at the proximal end, a clamping device at the distal end, at least one group of puncture devices and a control device linked with the clamping device, wherein the clamping device comprises a first chuck and a second chuck, the control device controls the relative displacement of the first chuck and the second chuck through a linkage mechanism, and the displacement is limited to X1, so that the clamping device can clamp valves with different thicknesses; the rotating part is an elastic component and has a reset state, when the rotating part is located in the reset state, the rotating part is in interference fit with the upper shell assembly, at the moment, the rotating part is in an initial position state, and the flexible clamping of the valve is realized by utilizing the structural elasticity of the rotating part. Through the flexible clamping structure of the implanting device, the artificial chordae tendineae can be implanted into the valves with different thicknesses, the valves which move continuously in a human body and have different thicknesses can be flexibly clamped, the valves can be fixed for a long time and released at any time, the valves with different thicknesses are protected, the valves can be clamped and stabilized for a long time, and the probability of expanding a puncture hole due to the movement of the valves in the puncture process is reduced.

The above description is only a part of the embodiments of the present invention, and not intended to limit the scope of the present invention, and all equivalent devices or equivalent processes performed by the content of the present specification and the attached drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (13)

1. A clamping-valve-fixing artificial chordae implantation device comprises a proximal handle operation device (2), a distal clamping device (1) and at least one group of puncture devices (4), and is characterized by further comprising a control device linked with the clamping device (1), wherein the clamping device (1) comprises a first clamping head (111) and a second clamping head (112), the control device controls the relative displacement of the first clamping head (111) and the second clamping head (112) through a linkage mechanism, and the displacement is limited to X1, so that the clamping device (1) can clamp valves with different thicknesses.

2. The device for implanting artificial chordae tendineae for a clampable fixed valve according to claim 1, characterized in that the control device is located in the handle-operating device (2), the control device comprising an operable rotation member (3) located in the housing of the handle-operating device (2), and a rotation member connection member (9) located in the clamping device (1) and connected to the rotation member (3), and a sliding member (8) cooperating with the rotation member connection member (9).

3. The clamp-fixated valve prosthetic chordae implantation device according to claim 2, further comprising a clamp control member (15) connected to the first clamp (111), the slider (8) being connected to the clamp control member (15), the slider (8) controlling the relative position of the first clamp (111) and the second clamp (112) via the clamp control member (15).

4. The device for implanting artificial chordae tendineae capable of clamping a fixed valve according to claim 3, wherein the rotating member (3) has a rotating shaft located in the handle operating means (2), and the rotating member (3) moves circularly with the rotating shaft as a central shaft.

5. The device for implanting artificial chordae tendineae capable of clamping a valve according to claim 4, wherein the handle operating device (2) comprises an upper casing component (21) and a lower casing component, the upper casing component (21) and the lower casing component form a first groove (38) and a second characteristic groove (39), the rotating member (3) has a third groove (35) and a fourth protrusion (37), the rotating member (3) has an initial position state, when the rotating member (3) is in the initial position state, the third groove (35) is in interference fit with the first groove (38), and the fourth protrusion (37) is in interference fit with the second groove (39).

6. The device for implanting a clampable valve prosthesis according to claim 5, characterized in that the rotating member (3) has a connection hole (36), the rotating member connection member (9) being connected at one end to the connection hole (36) and at one end to the sliding member (8).

7. The device of claim 6, wherein the attachment hole (36) is horizontally displaced by X2, the rotor connector (9) is horizontally displaced by X3, and X2= X3.

8. The clampable, valve-fixated prosthetic chordae implanting device according to claim 7, characterized in that the slider (8) has a horizontal sliding displacement setting of X4, said X3= X4= X1.

9. The device for clampable fixation of the valve for chordal implantation of a prosthetic of any one of claims 1-7, further comprising an elastic member (23), the elastic member (23) being located at the proximal end of the slider (8), the slider (8) compressing the elastic member (23) when the slider (8) is displaced proximally, setting the compression displacement to X5, X5= X1.

10. The device of claim 9, wherein the rotating member (3) is a resilient member, the rotating member (3) having a reset state, and the rotating member (3) being in interference fit with the upper housing assembly (21) when the rotating member (3) is in the reset state, the rotating member (3) being in an initial position.

11. The device for implanting artificial chordae tendineae capable of clamping a fixed valve according to claim 10, further comprising a valve capture feedback device for determining whether the valve is properly captured, wherein the handle operating device (2) further comprises a feedback operating mechanism connected to the valve capture feedback device, wherein the valve capture feedback device comprises a stopper (13) at the distal end of the slider (8), wherein the stopper (13) has a first state and a second state, wherein the slider (8) has a groove (81) adapted to the stopper, and wherein the stopper (13) can pass through the groove (81) of the slider (8) when the stopper (13) is in the first state.

12. The device for implanting artificial chordae tendineae capable of clamping a fixed valve according to claim 11, wherein the feedback operation mechanism comprises a detection button (6), the clamping control member (15) is connected with a rotation limiting structure (25) and a torsion spring structure, the torsion spring structure is pre-tightened and limited and installed in the lower shell component, and the torsion spring structure is connected with the detection button (6).

13. The device for implanting a prosthetic chordae tendineae capable of clamping a fixed valve according to claim 12, wherein the detection button (6) has an initial pointing direction (612) and a feedback pointing direction (611), the slider stopper (13) being in the first state when the detection button (6) is in the initial pointing direction (612);

when the detection key (6) is in the feedback pointing direction (611), the clamping control piece (15) rotates by a corresponding angle, so that the slider limiting block (13) is in the second state.

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