CN219070475U - Left auricle plugging device for heart - Google Patents

Abstract

The utility model relates to a heart left auricle plugging device, which comprises a support frame and a flow blocking film, wherein the support frame comprises a front support frame, a middle support frame and a rear support frame, the support frame is made of shape memory wires through welding, the support frame is in a reverse hook shape, and the flow blocking film has four layers. After the occluder is implanted into a body, the occluder becomes a bridge for climbing endothelial cells, and after the occluder is implanted for a period of time, the surface of the occluder for the left auricle is coated by nascent endothelial tissues, so that the occluder for the left auricle can be used for self-occluding. The advantages are as follows: the plugging device can solve the problem of the traditional plugging device that the plugging is not tight, avoid the hidden danger of thrombus formation of the left auricle and avoid the situation that the plugging device falls off.

Description

Left auricle plugging device for heart

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a heart left auricle plugging device.

Background

The left auricle is positioned at the corner of the inner side of the left atrium, is a dead angle of blood, and the main relevant group of potential danger is atrial fibrillation patients. After atrial contraction pressure of atrial fibrillation patients is reduced, blood flow in the left atrial appendage is slower, and blood coagulation into thrombus is easily caused. If the thrombus is shed, the thrombus is likely to reach intracranial blood vessels through blood flow, and tiny cerebral blood vessels are blocked, so that ischemic cerebral apoplexy is caused. Of the atrial fibrillation patients, 17% will develop thrombi, and about 91% of these will originate from the left atrial appendage. Stroke due to atrial fibrillation has three characteristics: high disability rate, high death rate and high recurrence rate. The necessity of risk control of stroke and thrombus management in atrial fibrillation patients has become a consensus of the world. Performing left atrial appendage occlusion can reduce to some extent the probability of stroke in patients with atrial fibrillation.

At present, the main intervention modes of preventing ischemic cerebral apoplexy caused by the left auricle are percutaneous left auricle blocking and surgical left auricle excision or closure. The percutaneous left auricle plugging is a treatment method which has been developed in recent years, has smaller wound, is simple to operate and consumes less time, the treatment method is to puncture femoral vein through the atrial septum, and the left auricle plugging device is placed at the opening part of the left auricle to achieve the purpose of isolating the left atrium from the inner cavity of the left auricle, so that the problem of stroke caused by the falling-off of left auricle thrombus is avoided, and the safety and the effectiveness of preventing atrial fibrillation thromboembolic events by applying the technology are proved by clinical researches.

After the left auricle plugging device is implanted into a body, the left auricle plugging device becomes a bridge for climbing endothelial cells, and after the left auricle plugging device is implanted for a period of time, the surface of the left auricle plugging device is coated by nascent endothelial tissues, so that the self plugging of the left auricle is realized. At this point, the left atrial appendage occlusion device has completed its life and no longer needs to be present in the body. Therefore, the ideal left auricle plugging device provides a temporary bridge for the left auricle to realize self-plugging, and the bridge is degraded by a machine body after the history mission is completed, so that defects are completely repaired by self tissues, and long-term complications and potential safety hazards caused by the metal retention in the body are avoided.

Chinese patent application: CN201520554526.4 discloses a left atrial appendage occlusion device, comprising a sealing disc and an anchoring device which are connected with each other, wherein the part of the anchoring device matched with the left atrial appendage is an anchoring net, and the anchoring net is in a bone-free structure. The whole anchoring device is in a bone-free structure. The anchoring device is formed by weaving super-elastic metal wires or memory alloy metal wires, the far end of the anchoring device is open, the proximal end of the anchoring device is converged and connected with the sealing disc to form a conical net, the far end of the anchoring device is open and turned towards the proximal end to form the anchoring net, and the conical net is surrounded by the anchoring net. The anchoring net is connected with the conical net through the arc transition area. However, the plugging device has the problem of loose plugging and falling off.

In view of the above, the utility model provides a plugging device with a barb structure, wherein the fixed barbs of the plugging device are easy to bend by adopting nickel titanium wires and then stretch out to form, the plugging device is fixed on the inner wall of the left auricle, the situation that the plugging device falls off can not occur, the problem of loose plugging can be solved, and no report is available at present on the plugging device for the left auricle of the heart.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art and provides a heart left auricle plugging device.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a heart left auricle plugging device, which comprises a support frame, a flow blocking film 2 and a connecting piece, wherein the support frame comprises a front support frame 1, a rear support frame 3 and a middle support frame 4, the front support frame 1, the rear support frame 3 and the middle support frame 4 are respectively positioned at the front end, the rear end and the middle end of the connecting piece, the flow blocking film 2 is connected with the connecting piece, the flow blocking film 2 has four layers, three layers are adjacently positioned between the front support frame 1 and the middle support frame 4 of the connecting piece, the other layer is positioned between the middle support frame 4 and the rear support frame 3, and the front support frame 1 is in a reverse hook shape with the tip end facing one end of the support.

Further, the occluder comprises a securing member 5.

Further, the fixing piece 5 is connected with the supporting frame.

Preferably, the fixing member 5 is cylindrical at its end.

Preferably, the cross section of the choke film 2 is circular.

Preferably, the choke film 2 is made of a polymer film.

Preferably, the support frame is woven using shape memory filaments.

Further, the occluder further comprises a cuff.

Further, the cuff is circumferentially connected to the choke film 2.

Preferably, the cuff is made of an elastic material.

The utility model has the advantages that:

the left auricle plugging device comprises the support frame with the inverted hook structure, four layers of flow blocking films are further arranged on the connecting piece, so that the auricle can be plugged, the flow blocking films can prevent blood flow, the flow blocking effect can be achieved to a greater extent through the multi-layer design, the problem of loose plugging can be solved through the increased cuff structure, the tip of the tail end of the support frame faces one side of the support frame, and damage to the auricle caused by the plugging device can be avoided. The stopper of this patent greatly increased the adaptability when the shutoff was used, the mounting that is equipped with can be good location in left auricle, and the shutoff is effectual, and the practicality is strong, and the mounting end adopts cylindric can avoid the fish tail of mounting to left auricle wall moreover.

Drawings

Figures 1-2 are schematic representations of the overall structure of the occluder of the present utility model.

Fig. 3 is a schematic side view of the occluder of the present utility model.

Fig. 4 is a schematic structural view of the connection of the fixing member and the supporting frame.

Fig. 5 is a schematic view of the usage state of the occluder of the present utility model.

Fig. 6 is a schematic diagram of a prior art left atrial appendage occlusion device.

1. A front support;

2. a choke film;

3. a rear support;

4. a middle support frame;

5. and a fixing piece.

Detailed Description

The utility model is further described below in conjunction with the detailed description. It is to be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. Further, it is understood that various changes and modifications of the present utility model may be made by those skilled in the art after reading the description of the present utility model, and such equivalents are intended to fall within the scope of the claims appended hereto.

Example 1

Referring to fig. 1-3, fig. 1-2 are schematic views of the overall structure of the occluder of the present utility model, and fig. 3 is a schematic side view of the occluder of the present utility model.

The embodiment provides a heart left auricle plugging device, the plugging device includes support frame, choked flow membrane 2, cover bag and connecting piece, the support frame includes preceding support frame 1, back support frame 3 and well support frame 4, preceding support frame 1, back support frame 3 and well support frame 4 are located the preceding, back, the well end of connecting piece respectively, choked flow membrane 2 is connected with the connecting piece, choked flow membrane 2 shares four layers altogether, and wherein three-layer is adjacent to be located between preceding support frame 1 and the well support frame 4 of connecting piece, and another layer is located between well support frame 4 and the back support frame 3, the support frame is the barb form, its pointed end towards support one end. The sleeve is circumferentially connected with the choke film 2, and is made of elastic materials. Preferably, the cross section of the choke film 2 is circular, and the choke film 2 is made of a polymer film. Preferably, the support frame is woven using shape memory filaments.

The application method and the working principle of the embodiment are as follows:

during the use, place the stopper according to the figure 5 and realize the shutoff effect in left auricle, in the in-process of using, the support frame (including preceding, well, back support frame play the supporting role), and the choked flow membrane plays the effect of stopping blood flow, and the cover bag on the choked flow membrane circumference can overcome the not tight defect of stopper shutoff among the prior art (the cover bag adopts elastic material to make can be according to shape, the structure timely adjustment of left auricle), realization left auricle shutoff that can be fine. After the occluder is implanted into a body, the occluder becomes a bridge for climbing endothelial cells, and after a period of implantation, the surface of the occluder for the left atrial appendage is coated by neogenesis endothelial tissues, so that the occluder for the left atrial appendage can realize self-occlusion.

It should be noted that, the support frame of the plugging device of this embodiment is woven by shape memory silk thread, before using, and the plugging device is in compression state, and during the use, the plugging device can be according to the structure of left auricle, the appropriate adjustment of size, the auricle that the plugging device of this embodiment can adapt to different sizes, structure promptly, and extensive applicability, the practicality is strong.

Example 2

Please refer to fig. 4. Fig. 4 is a schematic structural view of the connection of the fixing member and the supporting frame.

The embodiment is further improved on the basis of the embodiment 1, a fixing piece 5 is added to the improved plugging device, the fixing piece 5 is connected with a supporting frame, and the tail end of the fixing piece 5 is cylindrical.

The fixing piece 5 added in the embodiment can ensure that the plugging device cannot fall off in the using process.

Other structures, methods of use and working principles of the occluder of the present embodiment are described in embodiment 1, and are not described here again.

The end of the fixing member 5 is cylindrical to prevent the fixing member 5 from scratching the left atrial appendage wall.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and additions to the present utility model may be made by those skilled in the art without departing from the principles of the present utility model and such modifications and additions are to be considered as well as within the scope of the present utility model.

Claims (10)

1. The utility model provides a heart left auricle plugging device, its characterized in that, plugging device includes support frame, choked flow membrane (2) and connecting piece, the support frame includes preceding support frame (1), back support frame (3) and well support frame (4), preceding support frame (1), back support frame (3) and well support frame (4) are located the preceding, back, the well end of connecting piece respectively, choked flow membrane (2) are connected with the connecting piece, choked flow membrane (2) are total four-layer, and wherein the three-layer is adjacent between preceding support frame (1) and well support frame (4) of connecting piece, and another layer is located between well support frame (4) and back support frame (3), preceding support frame (1) is the barb form, its pointed end towards support one end.

2. The occluder of claim 1, further comprising a securing member (5).

3. Occluder according to claim 2, wherein the securing member (5) is connected to a support frame.

4. Occluder according to claim 2, wherein the fixing means (5) are cylindrical at the end.

5. Occluder according to claim 1, wherein the flow-blocking membrane (2) has a circular cross-section.

6. Occluder according to claim 1, wherein the flow blocking film (2) is made of a polymeric film.

7. The occluder of claim 1, wherein said scaffold frame is braided using shape memory filaments.

8. The occlusion device of claim 1, further comprising a cuff.

9. The occluder of claim 8, wherein the cuff is circumferentially connected to the flow blocking membrane (2).

10. The occluder of claim 9, wherein the cuff is made of an elastic material.

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