Atrial shunt device

Abstract

An atrial shunt device, relating to the technical field of medical treatment. The atrial shunt device specifically comprises a first isolation membrane (4), the first isolation membrane (4) having a U-shaped structure in which the side surface is of a closed structure and the middle portion is recessed inwardly; and a second isolation membrane (5), the second isolation membrane (5) having a U-shaped structure in which the side surface thereof is of a closed structure and is arranged in the first isolation membrane (4), and the middle portion of the second isolation membrane (5) is recessed inwardly. The tops of the second isolation membrane (5) and the first isolation membrane (4) all have an arc-shaped structure, and two ends of the second isolation membrane (5) and the first isolation membrane (4) are all connected by means of arc-shaped connection portions (10), so as to form a sealed cavity between the second isolation membrane (5) and the first isolation membrane (4). The sealed cavity is internally provided with a support body for maintaining the shapes of the second isolation membrane (5) and the first isolation membrane (4). The atrial shunt device can block cells of the interatrial septum of a patient by means of the first isolation membrane (4) and the second isolation membrane (5), so as to avoid the reduction of the cross section of a shunt pathway due to proliferated cells at an interatrial septum orifice passing through first supporting strips (6) and second supporting strips (7), thereby improving the use effect.

Description

An atrial shunt

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202311016946.2, filed on August 11, 2023, entitled “A Atrial Shunt,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of medical technology, and in particular to an atrial shunt. Background Art

[0004] Interatrial shunt is a new treatment for heart failure. Clinically, a puncture sheath is used to puncture and create a hole in the patient's atrial septum, and then a shunt is inserted into the puncture site to form a shunt between the left and right atria. Part of the blood can be transferred from the left atrium to the right atrium to reduce the pressure in the left atrium or prevent the pressure in the left atrium from increasing.

[0005] Existing atrial shunts are typically made of metal wires. By forming multiple wires into a specific shape, gaps are created between the wires. During use, cells at the site of the atrial septal perforation proliferate, causing new cells to migrate into the shunt from the gaps in the shunt's sidewalls, blocking the flow path and ultimately affecting shunt performance, resulting in poor efficacy. To address this issue, we propose an atrial shunt. Summary of the Invention

[0006] In response to the deficiencies of existing medical treatments, the present application provides an atrial shunt, which has the advantage of preventing atrial septal cell proliferation from clogging the shunt, and solves the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present application is implemented through the following technical solutions: an atrial shunt, comprising a first isolation membrane, the first isolation membrane being a closed structure on the side and a U-shaped structure with an inwardly concave middle portion;

[0008] A second isolation membrane, the second isolation membrane is a closed structure on the side and is placed inside the first isolation membrane, and the middle part of the second isolation membrane is an inwardly concave U-shaped structure;

[0009] The tops of the second isolation diaphragm and the first isolation diaphragm are both arc-shaped structures, and both ends of the second isolation diaphragm and the first isolation diaphragm are connected by an arc-shaped connecting portion, so that a sealed cavity is formed between the second isolation diaphragm and the first isolation diaphragm. A support body is provided in the cavity to allow the second isolation diaphragm and the first isolation diaphragm to maintain their shape;

[0010] The second isolation membrane and both ends of the first isolation membrane form an anti-slip disk, one end of the first isolation membrane is an inlet, the other end is a discharge outlet, and the middle space is a diversion channel.

[0011] Preferably, the second isolation membrane and the first isolation membrane are elastic and have anti-slip grooves on their surfaces.

[0012] Preferably, the support body includes a plurality of first support bars, the middle portion of the first support bar is an inwardly concave U-shaped structure, the two ends of the first support bar are arc-shaped structures, and the first support bars are arranged in a ring to form an external support cage;

[0013] The support body further includes a plurality of second support bars, the middle portion of the second support bar is an inwardly concave U-shaped structure, the two ends of the second support bar are arc-shaped structures, and the second support bars are arranged in a ring to form an internal support cage;

[0014] The inner support cage is located inside the outer support cage with a gap therebetween, and the ends of the first support bar and the second support bar are connected;

[0015] Among them, the external support cage and the internal support cage are both arranged in the cavity, the second support bar is connected to the first isolation membrane, the first support bar is connected to the first isolation membrane, and the two ends of the second support bar and the first support bar are respectively connected to the arc-shaped connecting part.

[0016] Preferably, two adjacent second support bars and two adjacent first support bars are connected by reinforcing bars arranged at intervals.

[0017] Preferably, the apertures of the discharge port and the inlet are both larger than the aperture of the branch channel.

[0018] Preferably, the first isolation membrane and the second isolation membrane are elastic plastic films.

[0019] Preferably, the surfaces of the first support bar and the second support bar are smooth and free of burrs.

[0020] Compared with the prior art, when in use, the present application can block the patient's atrial septal cells through the first isolation membrane and the second isolation membrane, preventing the cells at the atrial septal opening from proliferating through the first support bar and the second support bar, thereby preventing the cross-section of the shunt channel from being reduced, thereby improving the use effect; at the same time, it also prevents the cells from proliferating and growing into the inside of the stent, making it difficult to remove the shunt. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] FIG1 is a schematic diagram of the structure of this application.

[0023] FIG2 is a side sectional view of the structure of the present application.

[0024] FIG3 is a schematic diagram of the partial connection structure of the first support bar and the reinforcement bar of the present application.

[0025] In the figure: 1. discharge outlet; 2. inlet; 3. diversion channel; 4. first isolation membrane; 5. second isolation membrane; 6. first support bar; 7. second support bar; 8. reinforcement bar; 9. anti-slip disc; 10. arc-shaped connecting part. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] Please refer to Figures 1 to 3. The present application provides a technical solution: an atrial shunt, including a first isolation membrane 4, the first isolation membrane 4 is a closed structure on the side, and the middle part is a U-shaped structure concave inward, as shown in Figures 1 and 2, the second isolation membrane 5 is a closed structure on the side and is placed in the first isolation membrane 4, and the middle part is a U-shaped structure concave inward.

[0028] The tops of the second isolation diaphragm 5 and the first isolation diaphragm 4 are both arc-shaped structures, and both ends of the second isolation diaphragm 5 and the first isolation diaphragm 4 are connected by an arc-shaped connecting portion 10, so that a sealed cavity is formed between the second isolation diaphragm 5 and the first isolation diaphragm 4. A support body is provided in the cavity to allow the second isolation diaphragm 5 and the first isolation diaphragm 4 to maintain their shape;

[0029] The second isolation diaphragm 5 and the first isolation diaphragm 4 form an anti-slip disk 9 at both ends. One end of the first isolation diaphragm 4 is the inlet 2 and the other end is the outlet 1. The middle space is the diversion channel 3.

[0030] Specifically, when the present application is used, the shunt is installed on the patient's atrial septum so that the first isolation membrane 4 contacts the inner wall of the patient's atrial septum opening, thereby blocking the atrial septal cells and preventing the cells from proliferating and passing through the interior of the shunt, thereby preventing the shunt channel 3 from being blocked and improving the use effect;

[0031] The two ends of the shunt channel 3 are respectively connected to the discharge port 1 and the inlet port 2, so that the blood in the patient's left atrium can flow into the shunt channel 3 along the inlet port 2 and finally be discharged into the right atrium through the discharge port 1. At the same time, the diaphragm is set into a U-shaped structure, and the U-shaped structure is stuck in the atrial septum opening to prevent the atrial shunt from falling off or moving.

[0032] The second isolation membrane 5 and the first isolation membrane 4 are elastic. In order to prevent the second isolation membrane 5 and the first isolation membrane 4 from sliding, anti-slip grooves are provided on their surfaces.

[0033] As shown in Figures 1 and 3, the support body includes a plurality of first support bars 6, the middle portion of the first support bar 6 is an inwardly concave U-shaped structure, the two ends of the first support bar 6 are arc-shaped structures, and the first support bars 6 are arranged in a ring to form an external support cage;

[0034] The support body also includes a plurality of second support bars 7, the middle portion of the second support bar 7 is an inwardly concave U-shaped structure, the two ends of the second support bar 7 are arc-shaped structures, and the second support bars 7 are arranged in a ring to form an internal support cage;

[0035] The internal support cage is located inside the external support cage, and there is a gap between the two, which is used for buffering, and the ends of the first support bar 6 and the second support bar 7 are connected. It should be noted that the structural shape composed of the internal support cage and the external support cage is consistent with the inner cavity shape composed of the second isolation membrane 5 and the first isolation membrane 4.

[0036] As shown in Figure 3, the external support cage and the internal support cage are both arranged in the cavity formed by the second isolation diaphragm 5 and the first isolation diaphragm 4, the second support bar 7 is connected to the first isolation diaphragm 4, and the first support bar 6 is connected to the first isolation diaphragm 4. The two ends of the second support bar 7 and the first support bar 6 are respectively connected to the arc-shaped connecting part 10. The second support bar 7 and the first support bar 6 can stably support the second isolation diaphragm 5 and the first isolation diaphragm 4 to prevent the second isolation diaphragm 5 and the first isolation diaphragm 4 from deformation.

[0037] In order to make the support bars more stable, two adjacent second support bars 7 and two adjacent first support bars 6 are connected by reinforcing bars 8 that are arranged at intervals.

[0038] As shown in FIG3 , the apertures of the discharge port 1 and the inlet 2 are both larger than the aperture of the branch channel 3 , and both ends of the branch channel 3 are trumpet-shaped.

[0039] The first isolation membrane 4 and the second isolation membrane 5 are elastic plastic membranes, such as expanded polytetrafluoroethylene membranes, or other elastic membranes.

[0040] Among them, the surfaces of the first support bar 6 and the second support bar 7 are smooth and free of burrs, which can prevent the first isolation membrane 4 and the second isolation membrane 5 from being pierced by burrs, and can avoid the burrs from causing secondary damage to the patient's atrial septum, thereby improving the use effect.

[0041] Finally, when the present application is in use, after the shunt is installed, the first isolation membrane 4 and the second isolation membrane 5 can block the patient's atrial septal cells to prevent the cells from proliferating into the shunt channel 3 and blocking the shunt channel 3, thereby improving the use effect.

[0042] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting this application; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. Furthermore, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0043] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An atrial shunt, comprising: A first isolation membrane (4), the first isolation membrane (4) being a closed structure on the side and a U-shaped structure concave in the middle; A second isolation membrane (5), the second isolation membrane (5) having a closed structure on the side and being arranged inside the first isolation membrane (4), the middle portion of the second isolation membrane (5) being an inwardly concave U-shaped structure; The tops of the second isolation membrane (5) and the first isolation membrane (4) are both arc-shaped structures, and both ends of the second isolation membrane (5) and the first isolation membrane (4) are connected via an arc-shaped connecting portion (10), so that a sealed cavity is formed between the second isolation membrane (5) and the first isolation membrane (4), and a support body is provided in the cavity to allow the second isolation membrane (5) and the first isolation membrane (4) to maintain their shapes; The second isolation membrane (5) and the first isolation membrane (4) form an anti-slip disk (9) at both ends, one end of the first isolation membrane (4) is an inlet (2), the other end is an outlet (1), and the intermediate space is a branch channel (3).

2. An atrial shunt according to claim 1, wherein the second isolation membrane (5) and the first isolation membrane (4) are elastic and have anti-slip grooves on their surfaces.

3. An atrial shunt according to claim 1, wherein the support body comprises a plurality of first support bars (6), the middle portion of the first support bar (6) is an inwardly concave U-shaped structure, the two ends of the first support bar (6) are arc-shaped structures, and the first support bars (6) are arranged in a ring to form an external support cage; The support body further comprises a plurality of second support bars (7), the middle portion of the second support bar (7) being an inwardly concave U-shaped structure, the two ends of the second support bar (7) being arc-shaped structures, and the second support bars (7) being arranged in a ring to form an internal support cage; The inner support cage is located inside the outer support cage, and a gap is provided between the two, and the ends of the first support bar (6) and the second support bar (7) are connected; The external support cage and the internal support cage are both arranged in the cavity, the second support bar (7) is connected to the first isolation membrane (4), the first support bar (6) is connected to the first isolation membrane (4), and both ends of the second support bar (7) and the first support bar (6) are respectively connected to the arc-shaped connecting portion (10).

4. An atrial shunt according to claim 1, wherein two adjacent second support bars (7) and two adjacent first support bars (6) are connected by reinforcing bars (8) arranged at intervals.

5. An atrial shunt according to claim 1, wherein the apertures of the outlet (1) and the inlet (2) are both larger than the aperture of the shunt channel (3).

6. An atrial shunt according to claim 1, wherein the first isolation membrane (4) and the second isolation membrane (5) are elastic plastic membranes.

7. An atrial shunt according to claim 1, wherein the surfaces of the first support bar (6) and the second support bar (7) are both smooth and free of burrs.

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