CN112535552A - Valve repair clamp and application thereof - Google Patents

Abstract

The invention belongs to the technical field of animal instruments, and particularly relates to a valve repair clamp which comprises an outer clamp, an inner clamp and a tightening part, wherein the proximal end of the outer clamp and the proximal end of the inner clamp are arranged in the tightening part, the tightening part is connected with a conveyor, the outer clamp comprises a first clamping part and a second clamping part, the inner clamp comprises a third clamping part and a fourth clamping part, the first clamping part and the third clamping part and the second clamping part and the fourth clamping part are respectively used for clamping valve leaflets, and the tightening part is used for fixing the outer clamp and the inner clamp so as to repair a valve; the invention adopts a special animal valve repair clamp to perform the operation, and the membrane is restored to the normal involution level by clamping the pathological valve leaflets.

Description

Valve repair clamp and application thereof

Technical Field

The invention belongs to the technical field of animal instruments, and particularly relates to a valve repair clamp and application thereof.

Background

"Heart disease" is actually a name for many different types of heart disease. Heart disease is common in canines. It is estimated that 60% of older dogs have heart problems. In our canine partners, heart disease is either acquired or congenital, with the vast majority (about 95%) being acquired. Acquired heart disease can be caused by normal aging, injury, or infection, and is commonly found in middle and old aged dogs. Acquired diseases include muscle itself or heart valves. Today there are fewer and fewer people who die from heart disease, but unfortunately the mortality rate of our dog partners is growing at an alarming rate. This increase can be attributed to, in part, advances in veterinary medicine, which contribute to the longevity of dogs. The longer the life span, the more chance of getting ill. The heart has a series of serious problems that valve leaflets can not be completely closed, blood flows back to a blood pumping chamber, the ring expands, the valve leaflets prolapse and the valve leaflets are blocked from moving, and heart failure is caused.

The current main modes of treating the closure of the canine heart valve are diet restriction and drug treatment. However, the above method only delays the failure rate, avoids acute exacerbation, relieves the suffering of the affected dog, improves the life quality of the affected dog, prolongs the survival time as far as possible and has good treatment effect.

Aiming at the problem that the regurgitation is easily caused by the incomplete closure of the canine heart valve, a new canine valve repair clamp needs to be designed to overcome the defects in practical application.

Disclosure of Invention

Based on the above-mentioned disadvantages and shortcomings of the prior art, it is an object of the present invention to at least address one or more of the above-mentioned problems of the prior art, in other words, to provide a valve repair clamp that meets one or more of the above-mentioned needs.

It is another object of the present invention to provide the use of a valve repair clip that meets one or more of the aforementioned needs.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a valve repair anchor clamps, includes outer clamp, interior clamp and tightening part, the near-end of outer clamp and the near-end of interior clamp set up within tightening part, tightening part connects the conveyer, outer clamp includes first clamping part and second clamping part, interior clamp includes third clamping part and fourth clamping part, be used for pressing from both sides tight leaflet between first clamping part and the third clamping part and between second clamping part and the fourth clamping part respectively, be used for fixing outer clamp and interior clamp through tightening part to the realization is to the restoration of valve.

Preferably, the proximal end of the inner clip and the proximal end of the outer clip are connected to a delivery device.

Preferably, the outer clip has a shorn hole, and the inner clip is sleeved in the shorn hole to limit the rotation of the relative position relationship between the inner clip and the outer clip.

Preferably, the tightening part is provided with a boss and a threaded hole, so that the valve is clamped and locked and fixed by the outer clamp and the inner clamp.

Preferably, the surfaces of the outer clip and the inner clip are respectively provided with saw teeth and bosses for clamping and fixing the valve.

Preferably, the outer clip and the inner clip are respectively one or more of single-layer, multi-layer braided or alloy.

Preferably, the outer clip, the inner clip and the tightening part are made of any one of nickel-titanium alloy, nickel-titanium alloy wires, stainless steel wires, carbon fibers, glass fibers and high polymer materials.

Preferably, the surfaces of the outer clamp, the inner clamp and the tightening part of the tightening part are provided with covering films, and the covering films are carried with special functional medicines for accelerating endothelialization of the valve repair clamp.

Preferably, the coating is a single-layer coating or a multi-layer coating, and the coating material is one or more of a non-degradable high polymer material, a degradable high polymer material and a natural polymer.

The invention also provides application of the valve repair clamp, the clamp is applied to valve repair of dogs, cats and rabbits, the size of the clamp can be reduced and enlarged according to a certain proportion, and the clamp force can be applied to different animals.

Compared with the prior art, the invention has the beneficial effects that:

the invention adopts a special animal valve repair clamp to perform the operation, and the diseased valve leaves are clamped, so that the membrane is recovered to the normal involution level.

The valve repair fixture successfully repairs damaged and aged valve leaflet tissues of dogs by using the structure of the valve repair fixture, recovers the physiological function of the valve, prolongs the functional life of the valve, improves the success rate of the operation and the convenience of the operation, has good compatibility of a film and blood on the surface of the fixture, can effectively reduce the formation of thrombus, and can effectively shorten the time required by endothelialization.

Drawings

FIG. 1 is a schematic structural view of a valve repair clamp according to a first embodiment of the present invention;

FIG. 2 is a front view of a valve repair clip according to a first embodiment of the present invention;

FIG. 3 is a side view of a valve repair clip according to a first embodiment of the present invention;

FIG. 4 is a top view of a valve repair clip according to a first embodiment of the present invention;

FIG. 5 is a schematic view of a first embodiment of the present invention showing a valve repair clamp capturing an open state of a leaflet;

FIG. 6 is a schematic view of a valve repair clip capturing closed leaflets according to a first embodiment of the invention;

in the figure: 100 valve repair clamps, 101 outer clamps, 102 inner clamps, 103 tighteners, 104 leaflets, 105 conveyors, 106 push rods.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention, the following description will explain the embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

The first embodiment is as follows:

the embodiment provides a valve repair clamp, and thevalve repair clamp 100 can be sent to an atrium to perform repair work through a small transapical incision technology (an animal opens a small opening of about 3-5 cm in front of the chest, and a catheter is inserted into the apex of the heart and upwards passes through the apex of the heart to enter the ventricle) with the help of aconveyer 105.

As shown in fig. 1 to 6, thevalve repair clamp 100 includes anouter clamp 101, aninner clamp 102, and a tighteningportion 103, a proximal end of theouter clamp 101 and a proximal end of theinner clamp 102 are disposed inside the tighteningportion 103, theouter clamp 101 includes a first clamping portion and a second clamping portion, theinner clamp 102 includes a third clamping portion and a fourth clamping portion, the first clamping portion and the third clamping portion and the second clamping portion and the fourth clamping portion are respectively used for clamping leaflets, and the tighteningportion 103 is used for fixing theouter clamp 101 and theinner clamp 102 to repair a valve.

Specifically, the first clamping portion and the second clamping portion of theouter clamp 101 form a V-shape, similarly, the third clamping portion and the fourth clamping portion of theinner clamp 102 also form a V-shape, and the middle portion of theouter clamp 101 is provided with a chamfered hole to allow theouter clamp 101 to be sleeved outside theinner clamp 102, preferably through a connecting shaft or a limiting pin, so as to improve the connecting strength and stability.

The proximal ends of theouter clamp 101 and theinner clamp 102 are arranged in thetightening part 103, and theouter clamp 101, theinner clamp 102 and the tighteningpart 103 are made of any one of nickel-titanium alloy, nickel-titanium alloy wires, stainless steel wires, carbon fibers, glass fibers or high polymer materials, and can be selected according to actual requirements.

Theouter clamp 101 is provided with a shorn hole, and theinner clamp 102 is sleeved in the shorn hole and used for limiting the rotation of the relative position relationship between theinner clamp 102 and theouter clamp 101, so that the positioning effect of the inner clamp and the outer clamp is realized.

The tighteningpart 103 is provided with bosses and screw holes to enable theouter clip 101 and theinner clip 102 to be locked and fixed after clamping the valve, so as to limit the position change of theouter clip 101 and theinner clip 102 and limit the opening and closing angle of theouter clip 101 and theinner clip 102. The tighteningsection 103 is connected to thecarrier 105, and theouter clip 101 and theinner clip 102 are controlled by therod 106 and thetightening section 103, whereby theleaflet 104 can be caught and clamped and connected. The tighteningpart 103 is connected with theconveyor 105 in a bayonet clamping manner, and is connected with a screw or in a snap fit manner in advance, so that the installation and the disassembly are convenient.

Thevalve repair fixture 100 has a coating on the surface thereof, the coating is a single-layer coating or a multi-layer coating, the coating has good compatibility with blood, thrombosis can be effectively reduced, and the time required for endothelialization can be effectively shortened.

The surface ofouter clamp 101 andinterior clamp 102 is equipped with sawtooth and boss, contacts with the valve through sawtooth and boss, improves the frictional force of contact surface for press from both sides tight fixed valve, prevent to drop or press from both sides the not firm problem of pressing from both sides tightly.

In this embodiment, the proximal end of theinner clip 102 and the proximal end of theouter clip 101 are connected to aconveyor 105, theouter clip 101 and theinner clip 102 are opened by operating apush rod 106 through theconveyor 105, a space is left between theouter clip 101 and theinner clip 102 for catching thevalve leaflet 104, thevalve repair clamp 100 is delivered to the valve position, the upper part of the clip is placed in the atrium, the lower part of the clip is placed in the ventricle, the position is continuously adjusted through theconveyor 105, thevalve leaflet 104 is caught, after thevalve leaflet 104 is clamped, thevalve leaflet 104 is checked, if the condition is not met, thevalve leaflet 104 is released and clamped again until thevalve leaflet 104 is suitable, and in the final state, the clamping mode is similar.

The present embodiments also provide for the use of a valve repair jig for canine, feline, and rabbit valve repair that can be scaled down to an enlarged size while modifying the clamping force for other animals.

The embodiment successfully connects the damaged valve leaflet tissue through the special structure, recovers the membrane physiological function, prolongs the functional life of the valve, fundamentally treats the damaged and degenerated heart valve compared with the medicament, and is beneficial to the long-term health of dogs.

Example two:

the valve repair clamp of the present embodiment differs from the first embodiment in that:

in the embodiment, the third clamping part and the fourth clamping part of the inner clamp are separated and hinged instead, so that the control line is increased, the two valve leaflets can be separated and captured, and the convenience for capturing the valve leaflets is increased.

Other specific structures can refer to the first embodiment.

Example three:

the valve repair clamp of the present embodiment differs from the first embodiment in that:

in the embodiment, the outer side of the outer clamp is additionally provided with the saw teeth, so that the matched friction force of the valve repairing clamp after clamping is increased, and the service life of the valve repairing clamp is prolonged.

Other specific structures can refer to the first embodiment.

The foregoing has outlined rather broadly the preferred embodiments and principles of the present invention and it will be appreciated that those skilled in the art may devise variations of the present invention that are within the spirit and scope of the appended claims.

Claims (10)

1. The utility model provides a valve repair anchor clamps, a serial communication port, including outer clamp, interior clamp and tightening part, the near end that the near end of outer clamp and interior clamp set up within tightening part, tightening part connects the conveyer, outer clamp includes first clamping part and second clamping part, interior clamp includes third clamping part and fourth clamping part, be used for pressing from both sides tight leaflet between first clamping part and the third clamping part and between second clamping part and the fourth clamping part respectively, be used for fixing outer clamp and interior clamp through tightening part to the realization is to the restoration of valve.

2. The valve repair clip of claim 1, wherein the proximal end of the outer clip of the inner clip and the proximal end of the inner clip are connected to a delivery device.

3. The valve repair clamp of claim 1, wherein the outer clamp has a shorn hole and the inner clamp is disposed in the shorn hole.

4. The clamp of claim 1, wherein the tightening portion has a boss and a threaded hole, so that the outer clamp and the inner clamp can clamp the valve and then lock and fix the valve.

5. The valve repair clamp of claim 1, wherein the outer and inner clamps are provided with serrations and bosses.

6. The valve repair clamp of claim 1, wherein the outer and inner clamps are each one or more of a single layer, a multi-layer weave, or an alloy.

7. The clamp of claim 1, wherein the outer clamp, the inner clamp and the tightening part are made of any one of nitinol, nitinol wires, stainless steel wires, carbon fibers, glass fibers and polymer materials.

8. The valve repair clamp of claim 1, wherein the outer, inner and tightening portions of the tightening portion have a coating on their surfaces.

9. The clamp of claim 8, wherein the covering membrane is a single-layer covering membrane or a multi-layer covering membrane, and the covering membrane material is one or more of a non-degradable high polymer material, a degradable high polymer material and a natural polymer.

10. The use of a valve repair clip according to any one of claims 1 to 9 for valve repair in canines, felines or rabbits.

Images