Heart valve clamp

Abstract

The utility model relates to a heart valve clip which comprises a fixing seat and two clamping arms, three round holes are formed in the fixing seat, the clamping arms are located on the left side and the right side of the fixing seat, three sets of barbs are arranged on one side of each clamping arm from front to back, each set of barbs comprises two barbs arranged side by side, and the barbs are arranged in the round holes. The barbs are turned up towards the outer side of the clamp, and a developing wafer is adhered to the end, far away from the fixed seat, of the clamping arm. The heart valve clamp is simple in structure, and can be properly deformed to facilitate clamping by utilizing the characteristics of the clamping arms, the barbs and the hyperelastic nickel-titanium alloy; and the developing wafer can be used for conveniently clamping tissues and carrying out surgical development. The nickel-titanium alloy has the characteristics of unique shape memory function, hyperelasticity and the like, so that the heart valve clamp can be quickly stored and used, the operation of medical personnel is facilitated, the operation preparation time is shortened, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a heart valve clip. Background Art

[0002] The incidence of heart valve disease is related to age, and with the advent of aging, the incidence rate has increased significantly. Take the treatment of mitral regurgitation, a relatively common heart disease, as an example. The mitral valve is located between the left atrium and the left ventricle. When the left ventricle contracts, the mitral valve acts as a check valve to tightly close the atrioventricular orifice to prevent blood from flowing back from the left ventricle into the left atrium. However, when the mitral valve is diseased, it may be difficult for the mitral valve to close completely when the left ventricle contracts, causing the left atrium to receive a large amount of reflux blood, which may cause a sharp increase in left atrial and pulmonary venous pressure, an increase in left ventricular diastolic volume load, and further lead to a series of pathological changes such as left ventricular enlargement and pulmonary hypertension. Severe mitral regurgitation can cause patients to experience symptoms such as palpitations, shortness of breath, and chest tightness. The annual mortality rate of patients with severe mental failure is as high as more than 30%.

[0003] For patients with mitral regurgitation, surgical open-chest valve repair or valve replacement is usually used. With the development of transcatheter valve technology, transcatheter mitral valve clips are also used to improve regurgitation. A valve clip device can be used to clamp the opposite side of the mitral valve, so that the hole between the mitral valves changes from one large hole to two small holes, reducing the regurgitation area and effectively preventing the occurrence of mitral regurgitation.

[0004] The valve clip device needs to be kept clean and stored in a container, which is inconvenient to take out and store each time, increasing the surgical preparation time and affecting the efficiency of the surgery. In addition, in order to clamp tissues in different positions and shapes, the original clips need to be made into suitable shapes for easy clamping, which also increases the difficulty of production. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a heart valve clip with reasonable structural design, good elasticity, and easy processing, use and storage in view of the above-mentioned prior art.

[0006] The purpose of the utility model is achieved in this way:

[0007] A heart valve clip comprises a fixing seat and two clamping arms, wherein the fixing seat is provided with three circular holes, the clamping arms are located on the left and right sides of the fixing seat, and one side of each clamping arm is provided with three groups of barbs from front to back, each group of barbs has two barbs arranged side by side, and the barbs are all turned up to the outside of the clip, and the clamping arm is bonded with a developing disc at the end away from the fixing seat.

[0008] The fixing seat, the clamping arm and the barb are of an integrally formed structure.

[0009] The material of the heart valve clip is nickel-titanium alloy.

[0010] The developing disc is a platinum-iridium metal disc.

[0011] Compared with the prior art, the advantages of the utility model are:

[0012] The utility model has a simple structure of a heart valve clip. It utilizes the characteristics of the clamping arm, barbs, and superelastic nickel-titanium alloy to be deformed appropriately for convenient clamping; the developing disc can conveniently clamp tissue and surgical development. It utilizes nickel-titanium alloy, which has a unique shape memory function and superelasticity, etc., so that the heart valve clip can be quickly stored and used, which is convenient for medical staff to operate, shortens the surgical preparation time, and improves the efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic diagram of a heart valve clip when in use.

[0014] Figure 2 The utility model is a schematic diagram of a heart valve clip being retracted into a sheath tube.

[0015] Among them: a fixing seat 1, a clamping arm 2, barbs 3, and a developing disc 4. DETAILED DESCRIPTION

[0016] like Figure 1 and Figure 2 As shown, the utility model relates to a heart valve clip. The material of the heart valve clip is nickel-titanium alloy, which has a unique shape memory function, as well as excellent characteristics such as superelasticity, corrosion resistance, high damping and biocompatibility.

[0017] The clamp comprises a fixing seat 1 and two clamping arms 2. The fixing seat 1 is provided with three circular holes for locating and installing the fixing seat 1. The clamping arms 2 are located on the left and right sides of the fixing seat 1. The surface of the clamping arms 2 is smooth, without defects such as edge burrs and cracks. Three groups of barbs 3 are respectively arranged on one side of each clamping arm 2 from front to back. Each group of barbs 3 has two barbs arranged side by side. The barbs 3 are all turned up to the outside of the clamp, so that the six barbs of each design can be fully stretched. The barbs are located on both sides of the clamping arms 2, which can facilitate clamping of the tissue at the valve.

[0018] Taking into account the processing feasibility and process difficulty, through finite element analysis and structural optimization, the fixed seat 1, the clamping arm 2 and the barb 3 adopt an integrated molding structure, the surface is polished, without edges, burrs, cracks and other defects, so as to improve the corrosion resistance.

[0019] The clamping arm 2 is bonded with a developing disc 4 at the end away from the fixing seat 1 . The developing disc 4 is a platinum-iridium metal disc that can play a role in developing during surgery.

[0020] Since nickel-titanium alloy has unique shape memory function and superelasticity, when this kind of heart valve clip is not in use, the fixing seat 1 and the two clamping arms 2 are in a U-shaped state, and the two clamping arms 2 are tightly retracted into the sheath for storage, and the fixing seat 1 is exposed from the sheath; when it is needed, the fixing seat 1 is pinched by hand, and the clamping arms 2 are pulled out of the sheath, so that the clamping arms 2 are in an open state, and surgical operations can be performed.

Claims

1. A heart valve clip, characterized in that: The clamp comprises a fixing seat (1) and two clamping arms (2), the fixing seat (1) being provided with three circular holes, the clamping arms (2) being located on the left and right sides of the fixing seat (1), and one side of each clamping arm (2) being provided with three groups of barbs (3) from front to back, each group of barbs (3) having two barbs arranged side by side, the barbs (3) all being turned up toward the outside of the clamp, and a developing disc being bonded to the end of the clamping arm (2) away from the fixing seat (1).

2. A heart valve clip according to claim 1, characterized in that: The fixing seat (1), the clamping arm (2) and the barb (3) are of an integrally formed structure.

3. A heart valve clip according to claim 1, characterized in that: The material of the heart valve clip is nickel-titanium alloy.

4. A heart valve clip according to claim 1, characterized in that: The developing disc (4) is a platinum-iridium metal disc.

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