Plugging device for patent foramen ovale

Abstract

The utility model discloses a patent foramen ovale plugging device. The plugging device comprises a right heart plugging disc (1), a left heart plugging disc (2) and a connecting part (3), the right heart plugging disc is connected with the left heart plugging disc through the connecting part, and flow blocking films are arranged in the right heart plugging disc, the left heart plugging disc and the connecting part; the section of the connecting part is elliptical; the diameter of the left heart plugging disc is larger than that of the right heart plugging disc; the right heart plugging disc, the left heart plugging disc and the connecting part are formed by weaving elastic metal wires; the elastic metal wires are made of partially degradable materials or completely degradable materials. According to the plugging device, the cross section of the connecting part is oval, so that the plugging device can be better attached to the oval foramen of a patient, and a good plugging effect is achieved.

Description

Technical Field

[0001] The utility model relates to a cardiac surgical instrument, in particular to a patent foramen ovale occluder. Background Art

[0002] Patent foramen ovale is a common congenital heart disease. The unclosed patent foramen ovale can cause abnormal intracardiac shunting, leading to local hemodynamic abnormalities, blood stasis, thrombosis, and further causing symptoms such as stroke, migraine, and dizziness.

[0003] Currently, the main treatment method for patent foramen ovale is to implant a special metal occluder at the patent foramen ovale to achieve occlusion of the foramen ovale. Specifically, the metal occluder is transported from the femoral vein to the left atrium through a delivery system, and then gradually deployed and released at the patent foramen ovale to finally complete the implantation.

[0004] The current problem is that the models of the occluders used in clinical applications are relatively single, while the structures of the patent foramen ovale in different patients are complex and highly variable. Existing occluders are difficult to completely occlude patent foramen ovale with different tunnel lengths, opening sizes, running directions, and cross-sectional shapes, and residual shunting after surgery may lead to insignificant treatment effects or even aggravated symptoms. Summary of the Invention

[0005] The purpose of the utility model is to provide a patent foramen ovale occluder, in which the connecting part of the occluder can better fit the patent foramen ovale to achieve a good occlusion effect on the foramen ovale.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] A patent foramen ovale occluder, the occluder includes a right heart occluding disc, a left heart occluding disc, and a connecting part. The right heart occluding disc is connected to the left heart occluding disc through the connecting part, and a flow blocking membrane is arranged in the right heart occluding disc, the left heart occluding disc, and the connecting part; the cross-section of the connecting part is oval.

[0008] Further, the diameter of the left heart occluding disc is larger than that of the right heart occluding disc.

[0009] Further, the right heart occluding disc, the left heart occluding disc, and the connecting part are woven from elastic metal wires.

[0010] Further, the elastic metal wire is made of a partially degradable material or a completely degradable material.

[0011] Further, the inner diameter of the connecting part varies in length.

[0012] Compared with the prior art, the occluder of the utility model has the following beneficial effects:

[0013] 1) The occluder of the present utility model, wherein the cross-section of the connecting part is oval, so that it can better fit the patient's patent foramen ovale and achieve a good occlusion effect;

[0014] 2) The occluder of the present utility model, wherein the diameter of the left heart occlusion disc is larger than that of the right heart occlusion disc, and the left heart occlusion disc can effectively cover multiple openings that may exist at the left atrial end of the patent foramen ovale to reduce residual shunt;

[0015] 3) The occluder of the present utility model, wherein the connecting part can be set into different specification configurations according to requirements for selection according to the actual situation of the patient. Description of the Drawings

[0016] Figure 1 is a schematic structural view of the patent foramen ovale occluder of the present utility model;

[0017] Figure 2 is Figure 1 the left view of the occluder shown in Detailed Embodiment

[0018] The following uses specific embodiments to further illustrate the present utility model:

[0019] This embodiment provides a patent foramen ovale occluder, which can achieve a good occlusion effect on the patent foramen ovale.

[0020] Referring to Figure 1 and Figure 2 , the occluder of this embodiment includes a right heart occlusion disc 1, a left heart occlusion disc 2 and a connecting part 3.

[0021] Those skilled in the art can understand that the connecting part 3 is a hollow cylindrical channel, and the connecting part 3 is arranged between the right heart occlusion disc 1 and the left heart occlusion disc 2, that is to say, the right heart occlusion disc 1 is connected to the left heart occlusion disc 2 through the connecting part 3.

[0022] A flow blocking membrane is also arranged in the right heart occlusion disc 1, the left heart occlusion disc 2 and the connecting part 3, and the flow blocking membrane can reduce the blood flow in the initial stage of implanting the occluder and promote the endothelialization of the occluder.

[0023] The above structural settings are the structural settings of conventional occluders, and the specific detailed structures are common knowledge known to those skilled in the art, so they will not be elaborated here.

[0024] The innovative structural settings of the occluder of this embodiment are as follows:

[0025] The diameter of the left atrial occluder 2 is larger than that of the right atrial occluder 1. The advantage of this setting is that in many cases, there may be multiple openings at the left atrial end of the patent foramen ovale. By setting the diameter of the left atrial occluder 2 to be larger than that of the right atrial occluder 1, the left atrial occluder 2 can effectively cover the multiple openings, thereby reducing residual shunts.

[0026] The whole occluder is composed of elastic metal wires woven together. In particular, the connecting part 3 also has a woven configuration. In this way, the elastic metal of the connecting part 3 has a radial expansion force after release, so as to achieve a good effect of reducing intracardiac shunts.

[0027] The elastic metal wires can be selected as non-degradable materials, partially degradable materials or completely degradable materials according to requirements. If partially degradable materials or completely degradable materials are used, within a certain period of time after the occluder is implanted, the occluder will gradually degrade, thereby reducing the damage caused by metal residues in the patient's body.

[0028] The cross-section of the connecting part 3 is oval. The advantage of this setting is that the connecting part 3 with an oval cross-section can better fit the patent foramen ovale of the patient, so as to achieve a good occluding effect.

[0029] Specifically, since the shape of the patent foramen ovale of most patients is close to oval, the oval connecting part 3 can better adapt to and fit the anatomical structure of the patent foramen ovale of the patient, reduce residual gaps, and thus improve the occluding effect.

[0030] The connecting part 3 can be set into different specification configurations according to requirements (that is, the length and inner diameter of the connecting part are different). In this way, the occluder of the corresponding specification can be selected according to the results of preoperative and intraoperative imaging examinations of the patient, so that the occluder can closely fit the patent foramen ovale tunnel and the left and right atrial walls.

[0031] The above is only the preferred embodiment of the present invention, and is not used to limit the protection scope of the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A patent foramen ovale occluder, the occluder comprising a right heart occluding disc (1), a left heart occluding disc (2) and a connecting portion (3), wherein the right heart occluding disc (1) is connected to the left heart occluding disc (2) via the connecting portion (3), and a flow blocking membrane is arranged in the right heart occluding disc (1), the left heart occluding disc (2) and the connecting portion (3); Features: The cross section of the connecting portion (3) is elliptical.

2. The patent foramen ovale occluder according to claim 1, characterized in that: The diameter of the left heart occluding disc (2) is greater than the diameter of the right heart occluding disc (1).

3. The patent foramen ovale occluder according to claim 1, characterized in that: The right heart occluding disc (1), the left heart occluding disc (2) and the connecting portion (3) are woven from elastic metal wires.

4. The patent foramen ovale occluder according to claim 3, characterized in that: The elastic metal wire is made of partially degradable material or completely degradable material.

5. The patent foramen ovale occluder according to claim 1, characterized in that: The length and inner diameter of the connecting portion (3) are different.

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