Miniature coronary artery balloon plugging device

Abstract

The miniature coronary artery balloon plugging device comprises an elastic sheath, a miniature balloon, a suture line, a catheter and a sealing block, an elastic cushion is fixedly connected to the inner wall of the elastic sheath, a crack is formed in the surface of the elastic sheath, the sealing block is fixedly connected to the left side of an inner cavity of the elastic sheath, and the catheter is embedded in the sealing block; the catheter penetrates through the sealing block, the right end of the catheter extends to an inner cavity of the elastic sheath, the surface of the right end of the catheter is fixedly sleeved with a miniature balloon, the miniature balloon is arranged in the inner cavity of the elastic sheath, two notches are formed in the surface of the elastic sheath, and the suture line penetrates through one notch, enters the elastic sheath, is arranged at the top of the miniature balloon and then penetrates out of the other notch. The suture line penetrates through the myocardium and is arranged at the bottom of the coronary artery, and the suture line penetrates out of the myocardium and then is knotted and fixed. The balloon plugging device has the advantages of repeatability and safety, and the problems that an existing balloon plugging device is not suitable for small animals due to the fact that the diameter of a balloon is large, and the balloon cannot be reserved in animal bodies for a long time when used in arteries are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a micro coronary balloon occlusion device, which is mainly used for preparing a coronary artery or main artery ischemia model of small animals. Background Art

[0002] Medical devices refer to direct or indirect instruments, equipment, appliances, in vitro diagnostic reagents and calibrators, materials and other similar or related items, including required computer software. Before medical clinics, small animals are usually subjected to multiple experiments. At present, animal models of ischemic cardiomyopathy are mostly prepared by thoracotomy and ligation of coronary arteries, or by balloon inflation and blockage or direct damage of the arterial intima with steel wire to cause myocardial ischemia. Conventional methods for preparing ischemic cardiomyopathy models require repeated thoracotomy, which is complicated, has low repeatability, high infection rate, long model production cycle and high mortality rate. The method of using balloons to block coronary arteries has the following disadvantages: the balloon has a large diameter and is not suitable for small animals; it is used intra-arterially and cannot be retained in the animal body for a long time. Summary of the invention

[0003] The purpose of the present invention is to provide a micro coronary balloon occlusion device, which has the advantages of repeatability and safety, and solves the problem that the existing balloon occluders have a large balloon diameter, are not suitable for small animals, are used within the artery, and cannot be retained in the animal body for a long time.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The micro-coronary balloon occlusion device of the present invention comprises an elastic sheath, a micro-balloon, a suture, a catheter and a sealing block, wherein the inner wall of the elastic sheath is fixedly connected with an elastic pad, the surface of the elastic sheath is provided with a crack that can increase the expansion range of the elastic sheath, the left side of the inner cavity of the elastic sheath is fixedly connected with the sealing block, the sealing block is inlaid with the catheter, the catheter passes through the sealing block and the right end of the catheter extends to the inner cavity of the elastic sheath, the right end surface of the catheter is fixedly sleeved with the micro-balloon, the micro-balloon is arranged in the inner cavity of the elastic sheath, the elastic The surface of the sheath is provided with two notches, the suture thread passes through one of the notches into the elastic sheath and is placed on the top of the micro-balloon, and then passes out through the other notch, and then the suture thread passes through the myocardium and is placed at the bottom of the coronary artery. After the suture thread passes out of the myocardium, it is knotted and fixed. The expansion of the micro-balloon can drive the suture thread to move up, and generate an upward pulling force on the coronary artery. At the same time, the expansion of the micro-balloon causes the elastic sheath to expand, and generates a downward compressive force on the coronary artery, so as to achieve the effect of blocking the coronary artery.

[0006] Furthermore, the elastic pad is made of elastic rubber.

[0007] Furthermore, the micro-balloon is made of a soft latex film, and when the micro-balloon is in a completely deflated state, the pressure on the coronary artery is almost zero.

[0008] Furthermore, the suture thread is made of polypropylene.

[0009] Furthermore, the elastic sheath has a diameter of 5 mm and a length of 15 mm.

[0010] Furthermore, the length of the micro-balloon is 8 mm.

[0011] Compared with the prior art, the beneficial technical effects of the present invention are:

[0012] 1. The micro-coronary balloon occlusion device of the present invention is used in conjunction with the myocardium and the coronary artery by arranging an elastic sheath, a micro-balloon, a suture, a notch, a catheter, an elastic pad and a sealing block. Only one thoracotomy is required to place the balloon catheter on the periphery of the artery. It has the advantages of repeatability and safety, and solves the problem that the existing balloon occluder has a large balloon diameter, is not suitable for small animals, and cannot be retained in the animal body for a long time when used in the artery.

[0013] 2. The micro-coronary balloon occlusion device of the present invention can increase the expansion range of the elastic sheath by providing an elastic sheath with a slit, and can prevent the micro-balloon from being infiltrated by the tissue in the animal body by providing an elastic pad and an elastic sheath for use in combination; the micro-balloon provided with a latex film has the advantages of being light and highly elastic, can greatly reduce the pressure on the coronary artery in a natural state, and has a larger expansion range; the notch can facilitate the passage of the suture, thereby facilitating subsequent operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic structural diagram of the elastic sheath in the micro-coronary balloon occlusion device of the present invention when it is not inflated;

[0016] Figure 2 It is a schematic diagram of the structure of the micro-coronary balloon occlusion device of the present invention when the elastic sheath is not inflated from the right side;

[0017] Figure 3 It is a schematic structural diagram of the elastic sheath in the micro-coronary balloon occlusion device of the present invention when it is inflated;

[0018] Figure 4 It is a schematic diagram of the right side structure of the micro coronary balloon occlusion device of the present invention when the elastic sheath is inflated.

[0019] Explanation of the reference numerals: 1. elastic sheath; 2. micro balloon; 3. suture; 4. notch; 5. catheter; 6. elastic pad; 7. sealing block; 8. myocardium; 9. coronary artery. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it is necessary to understand that the terms "length", "width", "inside", "outside", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly 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 direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The technical solution provided by the embodiments of the present invention is described in detail below with reference to the accompanying drawings.

[0024] like Figures 1 to 4 As shown, the micro coronary balloon occlusion device of this embodiment includes an elastic sheath 1, preferably, the elastic sheath 1 has a diameter of 5 mm and a length of 15 mm, wherein cracks are provided on the surface of the elastic sheath 1. By providing the elastic sheath 1 with cracks, the expansion range of the elastic sheath 1 can be increased, the myocardium 8 includes the coronary artery 9, the inner wall of the elastic sheath 1 is fixedly connected with an elastic pad 6, the material of the elastic pad 6 is made of elastic rubber, and by providing the elastic pad 6 and the elastic sheath 1 for use in combination, the micro balloon 2 can be prevented from being infiltrated into the tissue in the animal body.

[0025] Among them, the left side of the inner cavity of the elastic sheath 1 is fixedly connected with a sealing block 7, the left side of the sealing block 7 is inlaid with a catheter 5, the right side of the catheter 5 penetrates to the right side of the sealing block 7 and extends to the inner cavity of the elastic sheath 1, and the right side of the surface of the catheter 5 is fixedly sleeved with a micro-balloon 2. Preferably, the micro-balloon 2 is made of a soft latex film, and the length of the micro-balloon 2 is 8mm. When the micro-balloon 2 is in a completely deflated state, the pressure on the coronary artery 9 is almost zero. By setting the micro-balloon 2 of the latex film, it has the advantages of light weight and high elasticity, can greatly reduce the pressure on the coronary artery 9 in the natural state, and has a large expansion range.

[0026] In addition, a suture 3 is arranged on the top of the micro-balloon 2, and the material of the suture 3 is made of polypropylene. The surface of the elastic sheath 1 is provided with a notch 4 used in conjunction with the suture 3, and the number of the notches 4 is two. By providing the notch 4, the suture 3 can be easily passed through, thereby facilitating subsequent operations. The side of the suture 3 away from the micro-balloon 2 extends to the bottom of the coronary artery 9 and penetrates the myocardium 8. By providing the elastic sheath 1, the micro-balloon 2, the suture 3, the notch 4, the catheter 5, the elastic pad 6 and the sealing block 7 for use in conjunction, the advantages of repeatability and safety are achieved, and the problems that the existing balloon occluder has a large balloon diameter, is not suitable for small animals, and cannot be retained in the animal body for a long time when used in the artery are solved.

[0027] When the micro-coronary balloon occlusion device of this embodiment is in use, all components are in the initial state, the elastic sheath 1 is placed in a suitable position, the suture 3 is passed through the notch 4 into the elastic sheath 1, placed on the top of the micro-balloon 2, and finally passed out through the notch 4. The suture 3 is guided by an external device such as a suture needle, passed through the myocardium 8 and placed at the bottom of the coronary artery 9, and finally the suture 3 is knotted and fixed, and gas is filled through the catheter 5. The gas gradually enters the micro-balloon 2, so that the micro-balloon 2 gradually expands and expands, driving the suture 3 to move upward, generating an upward pulling force on the coronary artery 9, and at the same time, the expansion of the micro-balloon 2 causes the elastic sheath 1 to expand, generating a downward compressive force on the coronary artery 9, thereby achieving the effect of blocking the coronary artery 9. Similarly, when the gas is deflated, the coronary artery 9 is gradually connected, and the blood flow is restored. Only one thoracotomy is required, and the mortality rate, trauma and infection incidence of the model animal can be significantly reduced.

[0028] In summary, the micro-coronary balloon occlusion device of this embodiment is provided with an elastic sheath 1, a micro-balloon 2, a suture 3, a notch 4, a catheter 5, an elastic pad 6 and a sealing block 7, and is used in conjunction with the myocardium 8 and the coronary artery 9. It has the advantages of repeatability and safety, and solves the problem that the existing balloon occluder has a large balloon diameter, is not suitable for small animals, and cannot be retained in the animal body for a long time when used in the artery.

[0029] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A micro coronary balloon occlusion device, characterized in that: The invention comprises an elastic sheath (1), a micro-balloon (2), a suture (3), a catheter (5) and a sealing block (7); the inner wall of the elastic sheath (1) is fixedly connected to an elastic pad (6); the surface of the elastic sheath (1) is provided with a crack capable of increasing the expansion range of the elastic sheath (1); the left side of the inner cavity of the elastic sheath (1) is fixedly connected to the sealing block (7); the catheter (5) is embedded in the sealing block (7); the catheter (5) passes through the sealing block (7) and the right end of the catheter (5) extends to the inner cavity of the elastic sheath (1); the micro-balloon (2) is fixedly sleeved on the right end surface of the catheter (5); the micro-balloon (2) is arranged in the inner cavity of the elastic sheath (1); the surface of the elastic sheath (1) is provided with a plurality of slits, each of which is provided with a plurality of slits. Two notches (4) are provided. The suture (3) passes through one of the notches (4) into the elastic sheath (1) and is placed on the top of the micro-balloon (2). The suture (3) then passes through the other notch (4). The suture (3) then passes through the myocardium (8) and is placed at the bottom of the coronary artery (9). The suture (3) passes through the myocardium (8) and is tied and fixed. The expansion of the micro-balloon (2) can drive the suture (3) to move upward, thereby generating an upward pulling force on the coronary artery (9). At the same time, the expansion of the micro-balloon (2) causes the elastic sheath (1) to expand, thereby generating a downward compressive force on the coronary artery (9), thereby achieving the effect of blocking the coronary artery (9).

2. The micro coronary balloon occlusion device according to claim 1, characterized in that: The elastic pad (6) is made of elastic rubber.

3. The micro coronary balloon occlusion device according to claim 1, characterized in that: The micro-balloon (2) is made of a soft latex film. When the micro-balloon (2) is in a completely deflated state, the pressure on the coronary artery (9) is almost zero.

4. The micro-coronary balloon occlusion device according to claim 1, characterized in that: The suture thread (3) is made of polypropylene.

5. The micro coronary balloon occlusion device according to claim 1, characterized in that: The elastic sheath (1) has a diameter of 5 mm and a length of 15 mm.

6. The micro coronary balloon occlusion device according to any one of claims 1 to 5, characterized in that: The length of the micro-balloon (2) is 8 mm.

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