CN114848231B - Valve repair device - Google Patents

Abstract

The invention provides a valve repair device. The valve clamping mechanism comprises a connecting rod sliding block valve clamping mechanism and a control assembly; the clamping mechanism comprises a base, an adjusting seat and a valve clamping assembly; the base comprises a base and a clamping pipe; the adjusting seat is sleeved on the clamping pipe; the two groups of valve clamping assemblies are arranged on two sides of the adjusting seat and are respectively connected with the adjusting seat and the base; the side wall of the clamping pipe is provided with a sliding chute extending along the axial direction of the clamping pipe, and a plurality of stop blocks used for separating a plurality of clamping gaps in the sliding chute are arranged in the sliding chute at intervals along the axial direction; the inner wall of the adjusting seat is provided with an elastic clamping piece which can be clamped into the clamping gap; the control assembly is used for controlling the valve clamping assembly to open and fold in relative to the adjusting seat to capture and clamp the valve by controlling the elastic clamping piece to slide in the sliding groove, and can also control the elastic clamping piece to be clamped in the clamping gap to lock the valve clamping assembly. The embodiment of the invention is locked in a clamping way, the failure risk can be reduced and the part processing difficulty is low.

Description

Valve repair device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a valve repair device.

Background

With the rapid development of the aging of the population in China, the incidence of senile valvular disease is remarkably increased, and the life quality of the elderly is reduced. Among them, valve regurgitation is a common condition. The total disease rate of mitral regurgitation in adults over 35 years old in China is 18.4%, and severe mitral regurgitation can cause acute left heart failure and even cardiogenic shock. Tricuspid regurgitation can cause patients to experience fatigue, cold skin, dyspnea, edema, and severe tricuspid regurgitation can suddenly induce severe heart failure. The edge-to-edge repair technology is a mature surgical technology and is also a mature technology which is developed into valve intervention repair. Based on the valve repair principle, numerous valve repair products are emerging. However, the valve repair product at the present stage adopts a friction force limiting and locking mode after clamping the valve leaflets, the locking and limiting performance depends on precise surface processing, and the failure risk exists.

Disclosure of Invention

The embodiment of the invention aims to provide a valve repair device, which locks the clamping state of a valve clamping mechanism in a clamping manner, so that the part processing difficulty can be reduced, and the failure risk can be reduced.

To solve the above technical problem, an embodiment of the present invention provides a valve repair device, including: a connecting rod sliding block valve clamping mechanism and a control component;

the connecting rod slider valve fixture includes: the valve clamping device comprises a base, an adjusting seat and two groups of valve clamping components; the base comprises a base and a clamping pipe arranged on one side of the base; the adjusting seat is sleeved on the clamping pipe and can axially move relative to the clamping pipe; the two groups of valve clamping assemblies are arranged on two sides of the adjusting seat, and each group of valve clamping assemblies is respectively connected with the adjusting seat and the base; the side wall of the clamping pipe is provided with a sliding groove which axially extends along the clamping pipe, and a plurality of stop blocks which are used for separating a plurality of clamping gaps in the sliding groove are axially arranged in the sliding groove at intervals; the inner wall of the adjusting seat is provided with an elastic clamping piece which can be clamped into the clamping gap;

control assembly and connecting rod slider valve clamping mechanism cooperation are used for through control elasticity joint spare is in slide in the spout in order to control valve clamping assembly is relative the adjustment seat opens in order to catch the valve, and is used for control valve clamping assembly centers on the adjustment seat is drawn in order to press from both sides tight leaflet, can also control elasticity joint spare card is gone into in the joint clearance in order to lock valve clamping assembly.

In addition, the clip includes: the fixing part is fixedly arranged on the inner wall of the adjusting seat, and the clamping plate is in clamping fit with the clamping gap;

the dog orientation one side of joint spare is the arch from both ends to middle gradual increase, bellied both sides form the sliding guide face of screens board.

Additionally, the valve clamping assembly comprises: the upper clamping arm, the lower clamping arm and the connecting rod;

the inner end of the upper clamping arm is fixedly connected with the adjusting seat; the inner end of the lower clamping arm is rotatably connected with the adjusting seat; one end of the connecting rod is rotatably connected with the base, and the other end of the connecting rod is rotatably connected with the lower clamping arm and can drive the lower clamping arm to swing relative to the adjusting seat; the upper clamping arm can move from a position close to the adjusting seat to the opened lower clamping arm under the action of self elastic restoring force so as to clamp the captured valve leaf.

In addition, the connecting rod comprises a pair of rotating rods and a cross rod arranged between the rotating rods, and the inner ends of the rotating rods are connected with the base through rivets or pin shafts; the outer end of the rotating rod is connected with the lower clamping arm through a rivet or a pin shaft.

In addition, the upper clamp arm includes: the mounting plate and the elastic clamping plate are integrally connected; the side wall of the adjusting seat is provided with a clamping arm groove, and the mounting plate is fixedly arranged in the clamping arm groove; a plurality of clamping teeth which protrude towards the lower clamping arm and are obliquely arranged relative to the elastic clamping plate are arranged on two sides of the elastic clamping plate, and a plurality of through holes are formed in the elastic clamping plate along the axial direction of the elastic clamping plate; the elastic clamping plate and the mounting plate are provided with an included angle, and the included angle is larger than or equal to 60 degrees and smaller than or equal to 120 degrees.

In addition, the lower clamping arm comprises a mounting part and a clamping part which are connected; the inner end of the mounting part is connected with the adjusting seat through a rivet or a pin shaft, and the outer end of the mounting part is connected with the outer end of the connecting rod through a rivet or a pin shaft; the clamping part comprises two side limiting plates and a plurality of clamping plates, and the plurality of clamping plates are arranged between the two side limiting plates at intervals; when the upper clamping arm and the lower clamping arm move oppositely, the upper clamping arm is clamped between the two side limiting plates of the lower clamping arm.

In addition, the outer side wall of the adjusting seat is provided with a boss, a lower clamping arm connecting hole is formed in the boss, and the lower clamping arm is connected with the adjusting seat through a rivet or a pin shaft arranged in the lower clamping arm connecting hole.

In addition, the control assembly includes: connecting pipes, a central control pipe and a release wire;

the distal end of connecting pipe with the adjustment seat is kept away from the one end of base links firmly and can separate, the release silk is worn to locate in the screens and with the screens socle end links firmly and can separate, well accuse pipe box is located the release silk penetrates in proper order the connecting pipe with in the screens, work as well accuse pipe passes in the screens during the joint position of joint spare, joint spare can be followed the spout slides, through the connecting pipe with the release silk can be controlled the adjustment seat is relative thereby screens pipe axial displacement control opening and drawing in of valve centre gripping subassembly, work as well accuse pipe withdraws from in the screens during the joint position of joint spare, joint spare can block under self elastic action in the joint clearance and lock the position appearance of valve centre gripping subassembly.

In addition, the clamping pipe is sequentially provided with a circular pipe cavity and a rectangular pipe cavity which are communicated from the bottom end to the top end;

the central control pipe comprises a circular pipe section and a rectangular pipe section which are integrally connected, and the rectangular pipe section of the central control pipe can axially move in the rectangular pipe cavity of the clamping pipe to control the clamping state of the clamping piece;

the release silk is the circle silk, the release silk can penetrate in the screens pipe just the release silk distal end with screens pipe bottom end threaded connection.

In addition, the connecting pipe comprises a cylindrical connecting pipe section and a plurality of connecting plates axially extending from the far end of the connecting pipe section and inwardly furling, a buckle is arranged on the outer side of the bottom end of each connecting plate, a clamping groove matched with the buckle is formed in the side wall of the top end of the adjusting seat, and the connecting plates can be inserted into the adjusting seat in a natural state; the central control pipe can drive the connecting plates to be opened so that the buckles are clamped into the clamping grooves when being inserted between the connecting plates of the connecting pipe, and the connecting plates can elastically recover so that the buckles are separated from the clamping grooves when the central control pipe is withdrawn from the connecting pipe.

According to the technical scheme, the invention has at least the following advantages and positive effects:

in the valve repairing device provided by the embodiment of the invention, the side wall of the clamping pipe of the connecting rod slider valve clamping mechanism is provided with the axially extending sliding chute, the sliding chute is internally provided with a plurality of stop blocks, the stop blocks separate the inside of the sliding chute into a plurality of clamping gaps, the inner wall of the adjusting seat is provided with the elastic clamping piece which can be clamped into the clamping gaps, when the control assembly is matched with the connecting rod slider valve clamping mechanism, the elastic clamping piece can be controlled to slide in the sliding chute so as to control the valve clamping assembly to open relative to the adjusting seat so as to capture valve leaflets, and the valve clamping assembly can be controlled to fold around the adjusting seat so as to clamp the valve leaflets, and the elastic clamping piece can be controlled to be clamped into the clamping gaps so as to lock the valve clamping assembly.

Drawings

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

FIG. 1 is a schematic structural view of a valve repair device according to an embodiment of the present invention in an open state;

FIG. 2 is a schematic structural view of a valve repair device according to an embodiment of the present invention in a collapsed state;

FIG. 3a is a schematic structural view of a base of a valve repair device according to an embodiment of the present invention;

FIG. 3b is a front cross-sectional view of the base shown in FIG. 3 a;

FIG. 4 is a schematic structural view of a linkage of a valve repair device provided in accordance with an embodiment of the present invention;

fig. 5 is a schematic structural view of a lower clamping arm of the valve repair device provided in the embodiment of the present invention;

fig. 6 is a schematic structural view of an upper clamp arm of the valve repair device provided in the embodiment of the present invention;

FIG. 7a is a schematic structural view of an adjustment seat of a valve repair device according to an embodiment of the present invention;

FIG. 7b is a front cross-sectional view of the adjustment block of FIG. 7 a;

FIG. 8 is a schematic structural view of a connecting tube of a valve repair device according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of a central control tube of a valve repair device according to an embodiment of the present invention;

FIG. 10 is a schematic structural view of a release wire of a valve repair device according to an embodiment of the present invention;

in the figure: 1. the valve repair device comprises a valve repair device body 100, a base 101, a base 1011, a base connecting hole 102, a clamping pipe 1021, a sliding groove 1022, a stop 1023, a clamping gap 1024, a rectangular tube cavity 1025, a circular tube cavity 1026 and internal threads; 200. the connecting rod 201, the rotating rod 202, the cross rod 2011, connecting holes at the inner end of the connecting rod 2012 and connecting holes at the outer end of the connecting rod; 300. the clamp comprises a lower clamp arm 301, an installation part 3011, an inner end connecting hole 3012, an outer end connecting hole 302, a clamping part 3021, a side limiting plate 3022 and a clamping plate; 400. the clamping device comprises an upper clamping arm, a mounting plate, a clamping plate, an elastic clamping plate, a clamping tooth 4022 and a through hole, wherein the upper clamping arm is 401; 500. the clamping device comprises an adjusting seat 501, a clamping piece 502, a passing cavity 503, a clamping arm groove 504, a lower clamping arm connecting hole 505 and a clamping groove; 600. a connecting pipe 601, a connecting pipe section 602, a connecting plate 603 and a buckle; 700. a central control pipe 701, a rectangular pipe section 702 and a circular pipe section; 800. and releasing the thread, 801 and external threads.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present invention in its various embodiments. However, the technical solution claimed in the present invention can be implemented without these technical details and various changes and modifications based on the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that, unless expressly stated otherwise, the terms "connected," "connected," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

In the description of the present invention, it should be noted that, in the field of interventional medical devices, the proximal end refers to the end closer to the operator, and the distal end refers to the end farther from the operator; axial refers to a direction parallel to the line connecting the center of the distal end and the center of the proximal end of the medical device in its natural state. The above definitions are for convenience only and should not be construed as limiting the present invention.

Referring to fig. 1, 2, 3a and 7a, an embodiment of the present invention provides a valve repair device for valve intervention repair. The valve repair device of this embodiment comprises: a connecting rod sliding block valve clamping mechanism and a control component. Connecting rod slider valve fixture includes: a base 100, an adjustment seat 500, and two sets of valve clamping assemblies.

The base 100 includes a base 101 and a locking tube 102 disposed on one side of the base 101. The adjusting seat 500 is disposed on the locking tube 102 and can move axially relative to the locking tube 102. The adjustment block 500 has a through-passage chamber 502, and the through-passage chamber 502 is adapted to the detent tube 102, so that the adjustment block 500 can move axially and rotate circumferentially relative to the detent tube 102.

Two groups of valve clamping assemblies are arranged on two sides of the adjusting seat 500, each group of valve clamping assemblies is respectively connected with the adjusting seat 500 and the base 101, and the valve clamping assemblies can be controlled to be opened or closed around the adjusting seat 500 by adjusting the distance between the adjusting seat 500 and the base 101.

The screens pipe 102 lateral wall is seted up along the spout 1021 of screens pipe 102 axial extension, is equipped with a plurality of along axial interval in the spout 1021 and is used for separating the dog 1022 of a plurality of joint clearance 1023 in spout 1021. The inner wall of the adjusting seat 500 is provided with an elastic clamping piece 501 which can be clamped into the clamping gap 1023. The control assembly cooperates with the link-slider valve-clamping mechanism for controlling the valve-clamping assembly to open relative to the adjustment seat 500 to capture the valve by controlling the elastic clamp 501 to slide in the slide slot 1021, as shown in fig. 1, and for controlling the elastic clamp 501 to slide in the slide slot 1021 to control the valve-clamping assembly to close around the adjustment seat 500 to clamp the valve leaflets, as shown in fig. 2. The control assembly can also control the elastic clamp 501 to be clamped into the clamp gap 1023 to lock the valve clamping assembly, so that the link-slider valve clamping mechanism remains in a locked state.

Referring to fig. 1, the control module may include: a connecting pipe 600, a central control pipe 700 and a release wire 800. The far end of the connecting pipe 600 is fixedly connected and separable with one end of the adjusting seat 500 far away from the base 101, and the releasing wire 800 penetrates through the clamping pipe 102 and is fixedly connected and separable with the bottom end of the clamping pipe 102. The central control tube 700 is sleeved on the releasing wire 800 and sequentially penetrates into the connecting tube 600 and the clamping tube 102, when the central control tube 700 passes through the clamping position of the clamping piece in the clamping tube 102, the clamping piece 501 on the adjusting seat 500 can slide along the sliding groove 1021 on the clamping tube 102, the axial movement of the adjusting seat 500 relative to the clamping tube can be controlled through the connecting tube 600 and the releasing wire 800, so that the valve clamping assembly is controlled to be opened and closed, and when the central control tube 700 exits from the clamping position of the clamping piece in the clamping tube 102, the clamping piece 501 of the adjusting seat 500 can be clamped into the clamping gap 1023 in the sliding groove 1021 under the elastic action of the clamping piece 501 of the adjusting seat 500 and the pose of the valve clamping assembly is locked. When the connecting rod sliding block valve clamping mechanism clamps the valve leaflets and folds and locks the valve leaflets, the connecting pipe 600 can be separated from the adjusting seat 500, the release wire 800 is separated from the base 100, the central control pipe 700 and the like are withdrawn out of the body, and the connecting rod sliding block valve clamping mechanism can be left in the body for a long time to realize valve repair.

Referring to fig. 3a and fig. 7a, the clamping member 501 of the adjusting base 500 includes: the fixed part and the screens board of integrative connection, the fixed part sets firmly in adjustment seat 500 inner wall, screens board and joint clearance joint cooperation. The clip 501 may be L-shaped in a natural state. The stopper 1022 is a protrusion gradually increasing from two ends to the middle toward one side of the clip 501, and two sides of the protrusion form a sliding guide surface of the clip plate. When the clamping plate is inserted into the clamping gap and locked, the clamping plate can be released from the clamping gap through the central control tube 700 inserted into the clamping tube 102, and at this time, the clamping plate is twisted up and down under the action of the outer side wall of the stopper 1022, so as to slide in the sliding groove. The guide surface design of the stop block can ensure that the clamping plate can slide more smoothly. It should be noted that the sliding grooves 1021 of the locking tube 102 may be rectangular grooves, and two sliding grooves 1021 may be symmetrically disposed on two sides of the locking tube 102, and it is understood that the number of the sliding grooves and the locking members may also be increased, for example, 3 sets, which is not limited herein. The number of the stoppers may be 3 to 7, preferably 7, but is not limited thereto, and the number of the stoppers 1022 may be adjusted according to the length of the chute. Through joint spare and dog complex joint structure, can make connecting rod slider valve fixture reliably lock, reduce the inefficacy risk.

Referring to fig. 3a and 3b, the locking tube 102 is provided with a circular tube 1025 and a rectangular tube 1024 in sequence from the bottom end to the top end. Referring to fig. 9, the center control tube 700 includes a circular tube section 702 and a rectangular tube section 701 integrally connected. The rectangular pipe section 701 of the central control pipe 700 can axially move in the rectangular pipe cavity of the clamping pipe 102 to control the clamping state of the clamping member 501. Or when the rectangular pipe section 701 of the central control pipe 700 penetrates into the rectangular pipe cavity 1024 of the clamping pipe 102, the clamping piece 501 can be disengaged from the clamping gap and slide in the sliding groove 1021 of the clamping pipe 102. The length of the rectangular pipe section 701 can be set according to the length of the sliding groove, so long as the unlocking and locking requirements of the connecting rod sliding block valve clamping mechanism can be met, and no specific limitation is made here.

As shown in fig. 10, the releasing wire 800 is cylindrical and is a round wire with a smooth surface, the distal end of the releasing wire 800 is provided with an external thread 801, and the proximal end of the releasing wire 800 can be connected with an external operation handle. The central control tube 700 is provided with a cylindrical inner cavity matched with the releasing wire 800, the releasing wire 800 can be penetrated into the central control tube 700, the far end of the releasing wire 800 can be penetrated into a circular tube cavity 1025 of the clamping tube 102, the bottom end of the circular tube cavity of the clamping tube 102 is provided with an internal thread 1026, and the external thread 801 of the releasing wire 800 is in threaded connection with the internal thread 1026 of the clamping tube. The release wire 800 is in threaded connection with the base 100, facilitating the installation and release of the release wire and the connecting rod slider valve clamping mechanism. The release wire 800 may be made of stainless steel or nitinol.

As shown in fig. 8, the connection tube 600 includes a cylindrical connection tube 601 and a plurality of connection plates 602 axially extending from the distal end of the connection tube 601 and converging inward, and the outer sides of the bottom ends of the connection plates 602 are provided with buckles 603. Illustratively, the distal end of the connecting tube 600 is provided with two connecting plates 602.

As shown in fig. 7a and 7b, two side walls of the top end of the adjusting seat 500 are provided with two slots 505 adapted to the fasteners 603. The two connection plates 602 are naturally slightly bent inward and can be inserted into the adjustment seat 500. It will be appreciated that the proximal end of detent tube 102 can extend through the proximal end of adjustment block 500, at which point detent tube 102 is able to move axially within connection tube 600 and connection plate 602 is movable within the annular gap between adjustment block 500 and detent tube 102. When the cylindrical pipe section 702 of the central control pipe 700 is inserted between the plurality of connecting plates 602 of the connecting pipe 600, the connecting plates 602 can be driven to open so that the buckles 603 are clamped into the clamping grooves 505 of the adjusting seat 500, and when the central control pipe 700 exits from the connecting pipe 600, the connecting plates 602 can be elastically restored so that the buckles 603 are disengaged from the clamping grooves 502, so that the connecting pipe 600 is automatically disengaged from the adjusting seat 500, and the connecting pipe 600 and the adjusting seat 500 can be fixedly connected and disengaged through the matching of the central control pipe 700 and the connecting pipe 600. It will be appreciated that in some examples, more connecting plates may be provided, for example, 3 connecting plates, and accordingly, the side wall of the top end of the adjusting seat is provided with 3 clamping grooves, so as to be connected with the adjusting seat through 3 clamping buckles. Illustratively, the connecting tube segment 601 may be cylindrical in shape, and its proximal end may be connected to an external handle (not shown) by which the adjustment seat 500 may be manipulated, as well as the connecting tube 600.

Optionally, the valve clamping assembly may comprise: upper clamp arm 400, lower clamp arm 300, and connecting rod 200. The inner end of the upper clamping arm 400 is fixedly connected with the adjusting seat 500. The inner end of the lower clamping arm 300 is rotatably connected with the adjusting seat 500. One end of the connecting rod 200 is rotatably connected to the base 101 of the base 100, and the other end thereof is rotatably connected to the lower clamp arm 300, and can drive the lower clamp arm 300 to swing relative to the adjustment base 500. Upper clip arm 400 is capable of moving under its own elastic restoring force from a position adjacent to adjustment seat 500 toward open lower clip arm 300 to grip a captured leaflet, as shown in fig. 2 and 1.

As shown in fig. 4, the connecting rod 200 may include a pair of rotating rods 201 and a cross bar 202 disposed between the rotating rods 201, and the inner ends of the rotating rods 201 are connected to the base 101 by rivets or pins. The outer end of the rotating rod 201 is connected with the lower clamping arm 300 through a rivet or a pin. Specifically, the inner end of the rotating rod 201 is provided with a connecting rod inner end connecting hole 2021, the two ends of the base 101 are provided with base connecting holes 1011, and the connecting rod inner end connecting hole 2021 and the base connecting holes 1011 are connected through a rivet or a pin. The outer end of the rotating rod 201 is provided with a connecting rod outer end connecting hole 2022 for connecting with the lower clamping arm 300.

As shown in fig. 5, the lower clamp arm 300 may include a mounting portion 301 and a clamping portion 302 connected thereto. The inner end of the mounting part 301 is connected with the adjusting seat 500 through a rivet or a pin shaft, and the outer end of the mounting part 301 is connected with the outer end of the connecting rod 200 through a rivet or a pin shaft. An inner end connecting hole 3031 and an outer end connecting hole 3032 are respectively formed in two ends of the mounting portion, a boss is arranged on the outer side wall of the adjusting seat 500 and can be rectangular, a lower clamping arm connecting hole 504 is formed in the boss, and the inner end connecting hole 3031 of the lower clamping arm 300 is connected with the lower clamping arm connecting hole 504 of the adjusting seat 500 through a rivet or a pin shaft. The outer end connection hole 3032 of the mounting portion 301 is connected to the link outer end connection hole 2022 of the link 200 by a rivet or a pin.

The inner end connecting hole 3031 of the mounting portion 301 can be rotatably connected with the adjusting seat 500 by a rivet or a pin. The mounting portion 301 is rotatably coupled to the connecting rod 200 through the outer end coupling hole 3032 by a rivet or a pin. The clamping portion 302 may include two side limiting plates 3021 and a plurality of clamping plates 3022, the plurality of clamping plates 3022 are disposed between the two side limiting plates 3021 at intervals, and illustratively, the number of the clamping plates 3022 is 3, which are respectively disposed at two ends and a middle position of the clamping portion 302. When the upper clamp arm 400 and the lower clamp arm 300 move toward each other, the upper clamp arm 400 is clamped between the two side limiting plates 3022 of the lower clamp arm 400.

As shown in fig. 6, the upper clamp arm 400 may include: a mounting plate 401 and a resilient clamping plate 402 which are integrally connected. The elastic clamping plate 402 and the mounting plate 401 have an included angle therebetween, which may be greater than or equal to 60 ° and less than or equal to 120 °. For example, the upper clamping arm 400 may have an L-shape, and the angle between the elastic clamping plate 402 and the mounting plate 401 may be 90 degrees. When the mounting plate 401 is disposed parallel to the sidewall of the adjustment seat 500 and fixed thereto, the elastic clamping plate 402 may extend perpendicular to the sidewall of the adjustment seat 500. It is understood that the angle between the mounting plate 401 and the elastic clamp plate 402 can be adjusted, so that the elastic clamp plate 402 can also be inclined toward the lower clamp arm 300 or toward the top end of the adjusting seat 500, which is not limited herein. As shown in fig. 7a, a clipping arm groove 503 is formed on a side wall of the adjusting seat 500, and the mounting plate 401 is fixed in the clipping arm groove 503 of the adjusting seat 500. Mounting plate 401 may be inserted into clamp arm slot 503 and may be welded, glued, or otherwise secured within clamp arm slot 503.

The elastic clamping plate 402 is provided with a plurality of clamping teeth 4021 protruding downward from the clamping arms 300 and obliquely arranged relative to the elastic clamping plate 402 on both sides, and for example, the included angle between the clamping teeth 4021 and the elastic clamping plate 402 may be greater than or equal to 30 ° and less than or equal to 60 °. The clamping teeth can penetrate into the valve leaflets when the upper clamping arm 400 and the lower clamping arm clamp the valve leaflets, the number of the clamping teeth 4021 can be set to be 2-8, preferably 4-6, and the shape of the clamping teeth 4021 can be triangular or other shapes convenient for puncturing the valve leaflets, so that the valve can be clamped more reliably. The elastic clamping plate 402 is provided with a plurality of through holes 4022 along the axial direction. The number of through holes 4022 may be 1 to 8, preferably 2 to 6. A pull wire may be threaded through the through hole 4022 in the outer end of the clamp plate 402 to pull and control the upper clamp arm. The remaining through holes 4022 reduce the weight of the upper arm, and may also be used to stitch the securing membrane to the upper arm 400. In this embodiment, the shape and number of the clamping teeth and the number of the through holes are not particularly limited.

The upper clip arm 400 can press down the clip arm 300 by its own elastic recovery capability, which can be formed by using a shape memory material and heat-setting process. For example, the upper clamp arm 400 may be made of nickel titanium, and may be shaped after heat treatment at 350-550 ℃.

In this embodiment, the base 100, the connecting rod 200, and the lower clamp arm 300 can be made of stainless steel, cobalt-chromium alloy, or other materials that can be implanted for a long time. The upper clamping arm 400, the adjusting seat 500, the connecting pipe 600 and the like can all adopt nickel titanium materials, and heat treatment is carried out at 350-550 ℃ so as to have better service performance. The tube 700 may be made of stainless steel or cobalt chrome alloy or other suitable materials.

The valve repair device of the embodiment is used in the following way with reference to fig. 1 and 2:

the conveying process comprises the following steps: in the initial state of the valve repair device according to the embodiment of the present invention, the connection tube 600 is connected to the adjustment seat 500, the release wire 800 is connected to the base 100, the central control tube 700 is sequentially inserted into the connection tube and the clamping tube, and the connecting rod slider valve clamping mechanism is in the closed and locked state, as shown in fig. 2, and at this time, the entire valve repair device can be transported to the lesion site;

leaflet clamping and locking process: after reaching the focal position, the adjusting base 500 is operated by a sheath tube (not shown) connected to the connection tube 600, the central control tube 700 is controlled by an external handle connected to the central control tube 700 to be continuously inserted into the locking tube 102 to unlock the adjusting base 500 and the locking tube 102, the releasing wire 800 is operated by the external handle to control the base 100 to be away from the adjusting base 500 to open the lower clip arm 300 to the leaflet clamping state shown in fig. 1, in this process, the upper clip arm 400 is pulled by a traction wire (not shown) inserted into a through hole of the upper clip arm 400 to be kept in the leaflet clamping state shown in fig. 1, and when a moving leaflet falls between the upper clip arm 400 and the lower clip arm 300, the upper clip arm 400 is released by the traction wire to restore the heat-set state under its own elastic force and automatically press down the leaflet (not shown in fig. 1). Then, the releasing wire 800 is operated to make the lower clipping arm 300 and the upper clipping arm 400 converge toward the adjustment seat 500 to the leaflet clipping state as shown in fig. 2, and then the central control tube 700 is pulled proximally to make the adjustment seat 500 clip and lock with the clipping tube 102. In the locking process, the central control tube 700 can be pulled to the near end by about 6-8mm through the handle, if the lower clamping arm 300 has no angle change, the push-pull releasing wire 800 indicates that the clamping mechanism is well locked, and the releasing implantation operation can be continued, and if the angle of the lower clamping arm 300 is not fixed, the releasing wire 800 can be continuously operated under the control of the central control tube 700 to adjust the locking position until the lower clamping arm 300 is completely locked.

And (3) a release implantation process: when the clamping mechanism is well locked, the traction wire of the upper clamping arm 400 can be drawn out to complete the release of the upper clamping arm 400; the release wire 800 is rotated again to release the release wire 800 from the base 100, after the release wire 800 is completely withdrawn, the central control tube 700 is completely withdrawn, the connecting plate 602 of the connecting tube 600 is elastically restored to a folded state, and after the release of the connecting tube 600 and the adjusting seat 500 is completed, the connecting tube 600 can be withdrawn. In this state, the clamping mechanism is implanted in the body and the control assembly is withdrawn from the body with the delivery sheath. The invention has simple operation and high operation efficiency, the releasing mode can be operated repeatedly, and the risk caused by misoperation in the operation is avoided.

Based on the technical scheme, the invention at least has the following advantages and positive effects:

in the valve repair device provided by the embodiment of the invention, the side wall of the clamping pipe of the connecting rod sliding block valve clamping mechanism is provided with the axially extending sliding groove, the sliding groove is internally provided with the plurality of stop blocks, the stop blocks separate the sliding groove into the plurality of clamping gaps, the inner wall of the adjusting seat is provided with the elastic clamping piece which can be clamped into the clamping gaps, when the control component is matched with the connecting rod sliding block valve clamping mechanism, the elastic clamping piece can be controlled to slide in the sliding groove so as to control the valve clamping component to open relative to the adjusting seat so as to capture valve leaflets, and the valve clamping component can be controlled to fold around the adjusting seat so as to clamp the valve leaflets, and the elastic clamping piece can be controlled to be clamped into the clamping gaps so as to lock the valve clamping component.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims (10)

1. A valve repair device, comprising: a connecting rod sliding block valve clamping mechanism and a control component;

the connecting rod slider valve fixture includes: the valve clamping device comprises a base, an adjusting seat and two groups of valve clamping components; the base comprises a base and a clamping pipe arranged on one side of the base; the adjusting seat is sleeved on the clamping pipe and can axially move relative to the clamping pipe; the two groups of valve clamping assemblies are arranged on two sides of the adjusting seat, and each group of valve clamping assemblies is respectively connected with the adjusting seat and the base; the side wall of the clamping pipe is provided with a sliding groove which axially extends along the clamping pipe, and a plurality of stop blocks which are used for separating a plurality of clamping gaps in the sliding groove are axially arranged in the sliding groove at intervals; the side wall of the adjusting seat is provided with an elastic clamping piece which can be clamped in the clamping gap;

the control assembly is matched with the connecting rod sliding block valve clamping mechanism, is used for controlling the valve clamping assembly to be opened relative to the adjusting seat to capture a valve by controlling the elastic clamping piece to slide in the sliding groove, is used for controlling the valve clamping assembly to be folded around the adjusting seat to clamp valve blades, and can also be used for controlling the elastic clamping piece to be clamped in the clamping gap to lock the valve clamping assembly;

the control assembly includes: connecting pipes, a central control pipe and a release wire;

the far end of the connecting pipe is fixedly connected with and can be separated from one end, far away from the base, of the adjusting seat, the releasing wire penetrates through the clamping pipe, is fixedly connected with and can be separated from the bottom end of the clamping pipe, the central control pipe is sleeved on the releasing wire and sequentially penetrates into the connecting pipe and the clamping pipe, when the central control pipe penetrates through the clamping position of the clamping piece in the clamping pipe, the clamping piece can slide along the sliding groove, the adjusting seat can be controlled to axially move relative to the clamping pipe through the connecting pipe and the releasing wire so as to control the opening and closing of the valve clamping assembly, and when the central control pipe exits from the clamping position of the clamping piece in the clamping pipe, the clamping piece can be clamped into the clamping gap under the action of elasticity of the clamping piece and lock the pose of the valve clamping assembly;

the connecting pipe comprises a connecting pipe section and a plurality of connecting plates axially extending from the far end of the connecting pipe section and inwardly furling, a buckle is arranged on the outer side of the bottom end of each connecting plate, a clamping groove matched with the buckle is formed in the side wall of the top end of the adjusting seat, and the connecting plates can be inserted into the adjusting seat in a natural state; the central control pipe can drive the connecting plates to be opened so that the buckles are clamped into the clamping grooves when being inserted between the connecting plates of the connecting pipe, and the connecting plates can elastically recover so that the buckles are separated from the clamping grooves when the central control pipe is withdrawn from the connecting pipe.

2. The valve repair device of claim 1, wherein the catch comprises: the clamping device comprises a fixing part and a clamping plate which are integrally connected, wherein the fixing part is fixedly arranged on the side wall of the adjusting seat, and the clamping plate is in clearance clamping fit with the clamping seat.

3. The valve repair device of claim 2, wherein the stopper is a protrusion gradually increasing from both ends to the middle toward one side of the snap-in member, and both sides of the protrusion form sliding guide surfaces of the snap-in plate.

4. The valve repair device of claim 1, wherein the valve clamping assembly comprises: the clamping device comprises an upper clamping arm, a lower clamping arm and a connecting rod;

the inner end of the upper clamping arm is fixedly connected with the adjusting seat; the inner end of the lower clamping arm is rotatably connected with the adjusting seat; one end of the connecting rod is rotatably connected with the base, and the other end of the connecting rod is rotatably connected with the lower clamping arm and can drive the lower clamping arm to swing relative to the adjusting seat; the upper clamping arm can move from a position close to the adjusting seat to the opened lower clamping arm under the action of self elastic restoring force so as to clamp the captured valve leaf.

5. The valve repair device of claim 4, wherein the connecting rod comprises a pair of rotating rods and a cross rod arranged between the rotating rods, and the inner ends of the rotating rods are connected with the base through rivets or pins; the outer end of the rotating rod is connected with the lower clamping arm through a rivet or a pin shaft.

6. The valve repair device of claim 4, wherein the upper clamp arm comprises: the mounting plate and the elastic clamping plate are integrally connected; the side wall of the adjusting seat is provided with a clamping arm groove, and the mounting plate is fixedly arranged in the clamping arm groove; a plurality of clamping teeth which protrude towards the lower clamping arm and are obliquely arranged relative to the elastic clamping plate are arranged on two sides of the elastic clamping plate, and a plurality of through holes are formed in the elastic clamping plate along the axial direction of the elastic clamping plate; the elastic clamping plate and the mounting plate are provided with an included angle, and the included angle is larger than or equal to 60 degrees and smaller than or equal to 120 degrees.

7. The valve repair device of claim 4, wherein the lower clamp arm includes a mounting portion and a clamping portion connected; the inner end of the mounting part is connected with the adjusting seat through a rivet or a pin shaft, and the outer end of the mounting part is connected with the outer end of the connecting rod through a rivet or a pin shaft; the clamping part comprises two side limiting plates and a plurality of clamping plates, and the plurality of clamping plates are arranged between the two side limiting plates at intervals; when the upper clamping arm and the lower clamping arm move oppositely, the upper clamping arm is clamped between the two side limiting plates of the lower clamping arm.

8. The valve repair device of claim 7, wherein a boss is disposed on an outer side wall of the adjustment seat, a lower clamping arm connection hole is disposed on the boss, and the lower clamping arm is connected to the adjustment seat through a rivet or a pin shaft mounted in the lower clamping arm connection hole.

9. The valve repair device of claim 1, wherein the clamping tube is provided with a circular lumen and a rectangular lumen which are communicated with each other in sequence from the bottom end to the top end;

the central control pipe comprises a circular pipe section and a rectangular pipe section which are integrally connected, and the rectangular pipe section of the central control pipe can axially move in the rectangular pipe cavity of the clamping pipe to control the clamping state of the clamping piece;

the release silk is the circle silk, the release silk can penetrate in the screens pipe just the release silk distal end with screens pipe bottom end threaded connection.

10. The valve repair device of claim 9, wherein the connection tube segment is cylindrical.

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