Artificial heart valve testing device

Abstract

The utility model discloses an artificial heart valve testing device, and relates to the technical field of medical instrument detection, the artificial heart valve testing device is characterized in that a first end of a high-transparency compliance valve testing cavity is connected with a first pipeline connecting piece, a second end is connected with a second pipeline connecting piece, and a high-transparency compliance valve model is fixed in a device main body; a simulated native valve clamp is arranged in the high-transparency compliance valve testing cavity, and the simulated native valve clamp clamps an artificial heart valve in the high-transparency compliance valve testing cavity. The first pipeline connecting piece and the second pipeline connecting piece can be connected with an external pipeline, so that the blood flowing environment of a human body can be simulated in the high-transparency compliance valve testing cavity; meanwhile, the simulated native valve and the artificial heart valve are both located in the simulated human body blood flowing environment, the performance of the artificial heart valve implanted into the simulated native valve can be simulated, and the potential risk after the artificial heart valve is implanted is evaluated.

Description

Technical Field

[0001] This application relates to the field of medical device testing technology, and in particular to an artificial heart valve testing device. Background Technology

[0002] Currently, artificial heart valve designs typically use a variety of materials that may interact adversely with blood components after implantation. Therefore, a deeper understanding of these interactions helps predict potential thrombosis after device implantation in order to assess the potential risks of heart valve replacement surgery.

[0003] In order to test the effects of artificial heart valve implantation, this application developed a testing device for testing artificial heart valves. Summary of the Invention

[0004] The main purpose of this application is to provide an artificial heart valve testing device for assessing the potential risks after artificial heart valve implantation.

[0005] To achieve the above objectives, this application provides the following solution:

[0006] This application proposes an artificial heart valve testing device, comprising: a device body, a highly transparent and compliant valve testing chamber, a first sealing transition member, a second sealing transition member, a first conduit connector, and a second conduit connector;

[0007] The first end of the highly transparent and compliant valve testing cavity is connected to the first conduit connector via a first sealing transition member, and the second end of the highly transparent and compliant valve testing cavity is connected to the second conduit connector via a second sealing transition member.

[0008] The main body of the device is connected to the first sealing transition piece and the second sealing transition piece respectively, and the highly transparent and compliant valve model is fixed inside the main body of the device;

[0009] The highly transparent and compliant valve test chamber is equipped with a simulated native valve clamp that holds the artificial heart valve within the chamber.

[0010] Preferably, sealing gaskets are provided at the connection points between the main body of the device and the first sealing transition piece and the second sealing transition piece, the connection points between the first pipe connector and the first sealing transition piece, and the connection points between the second pipe connector and the second sealing transition piece.

[0011] Preferably, the device body is provided with an interface for injecting a pressure medium into the cavity formed by the device body, the highly transparent and compliant valve test chamber, the first sealing transition member, and the second sealing transition member.

[0012] Preferably, the artificial heart valve is one of the following: an artificial aortic valve, an artificial pulmonary valve, an artificial mitral valve, and an artificial tricuspid valve.

[0013] Preferably, when the artificial heart valve is an artificial aortic valve, the highly transparent and compliant valve test cavity is an aortic sinus structure; when the artificial heart valve is an artificial pulmonary valve, the highly transparent and compliant valve test cavity is a pulmonary sinus structure.

[0014] Preferably, the simulated native valve and the highly transparent, compliant valve test cavity are made of silicone.

[0015] Preferably, the artificial heart valve is a mechanical valve or a biological valve.

[0016] Preferably, the highly transparent compliant valve testing cavity and the main body of the device are made of highly transparent material.

[0017] The technical solution provided in this application has the following beneficial effects:

[0018] In the technical solution provided in this application, the first end of the high-transparency compliant valve testing cavity is connected to the first conduit connector via a first sealing transition member, and the second end of the high-transparency compliant valve testing cavity is connected to the second conduit connector via a second sealing transition member. The main body of the device is connected to both the first and second sealing transition members, fixing the high-transparency compliant valve model within the main body of the device. External conduits for simulating a blood flow environment can be connected via the first and second conduit connectors to simulate the blood flow environment of the human body within the high-transparency compliant valve testing cavity. A simulated native valve is installed within the high-transparency compliant valve testing cavity, and this simulated native valve clamp securely holds the artificial heart valve within the high-transparency compliant valve testing cavity. Simultaneously, both the simulated native valve and the artificial heart valve are within a simulated human blood flow environment, thereby simulating the performance of the artificial heart valve implanted into the simulated native valve and assessing the potential risks after artificial heart valve implantation. Attached Figure Description

[0019] Figure 1 An exploded view of an artificial heart valve testing device provided in an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the structure of an artificial heart valve testing device provided in an embodiment of this application;

[0021] Figure 3 This is a side view cross-sectional structural diagram of an artificial heart valve testing device provided in an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the structure of the highly transparent and compliant valve testing cavity provided in the embodiments of this application;

[0023] Among them, 1-the main body of the device, 2-the highly transparent and compliant valve test chamber, 3-the first sealing transition piece, 4-the second sealing transition piece, 5-the first conduit connector, 6-the second conduit connector, 7-the simulated native valve clamp, 8-the artificial heart valve, and 9-the sealing pad. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] like Figures 1 to 4 The artificial heart valve testing device shown includes: a main body 1, a highly transparent and compliant valve testing chamber 2, a first sealing transition piece 3, a second sealing transition piece 4, a first conduit connector 5, and a second conduit connector 6;

[0026] The first end of the highly transparent and compliant valve testing chamber 2 is connected to the first conduit connector 5 via the first sealing transition member 3, and the second end of the highly transparent and compliant valve testing chamber 2 is connected to the second conduit connector 6 via the second sealing transition member 4. This highly transparent and compliant valve testing chamber 2 possesses high transparency and compliance. The transparency allows researchers to clearly observe the valve's performance during the testing process, while the compliance allows the testing chamber to simulate the dynamic environment of a real heart valve. The main body 1 of the device is connected to the first sealing transition member 3 and the second sealing transition member 4 respectively, fixing the highly transparent and compliant valve model within the main body 1. Through the first conduit connector 5 and the second conduit connector 6, it can be connected to an external conduit used to simulate the blood flow environment, allowing the flow medium from the external conduit to flow unidirectionally into the highly transparent and compliant valve testing chamber 2, thereby simulating the human blood flow environment within the highly transparent and compliant valve testing chamber 2.

[0027] A simulated native valve clamp 7 is installed within the highly transparent, compliant valve testing chamber 2. This clamp contains a simulated native valve and simultaneously secures the artificial heart valve 8 within the chamber, simulating the clinical implantation of the artificial heart valve 8. The artificial heart valve refers to an implantable organ that replaces the original heart valve, allowing unidirectional blood flow and possessing the functions of a natural heart valve. In this way, both the simulated native valve and the artificial heart valve 8 are situated within a simulated human blood flow environment, allowing for the simulation of the performance of the artificial heart valve 8 implanted in the simulated native valve and the assessment of potential risks after implantation.

[0028] The artificial heart valve testing device provided in this application can be used to evaluate any one of artificial aortic valve, artificial pulmonary valve, artificial mitral valve and artificial tricuspid valve. Different artificial heart valves 8 can be customized for different test subjects and fixed in the highly transparent and compliant valve testing chamber 2 by means of a simulated native valve clamp 7.

[0029] To improve the simulation effect, the native valve clamp is adapted to the selection of the test object in terms of structure and size. Specifically, when the artificial heart valve 8 is an artificial aortic valve, the simulated native valve on the native valve clamp 7 is customized based on the structure of the human native aortic valve; when the artificial heart valve 8 is an artificial pulmonary valve, the simulated native valve is customized based on the structure of the human native pulmonary valve; when the artificial heart valve 8 is an artificial mitral valve, the simulated native valve is customized based on the structure of the human native mitral valve; and when the artificial heart valve 8 is an artificial tricuspid valve, the simulated native valve is customized based on the structure of the human native tricuspid valve.

[0030] In addition to customizing the simulated original valve clamp 7 for the test subjects, this application further incorporates in-depth consideration of pathological conditions, designing the simulated original valve to simulate abnormal original valve conditions, thereby further improving the practicality of the testing device. Taking the aortic valve as an example, under normal conditions, it has three flexible leaflets that can open and close freely with the contraction and relaxation of the heart, ensuring smooth blood flow between the heart and blood vessels. However, under pathological conditions, such as aortic valve calcification, one or more leaflets may become abnormally rigid, losing their original elasticity and flexibility, causing the valve to fail to open or close normally. In this case, blood flow is obstructed, and the blood pumped by the heart cannot be effectively delivered to the body's blood vessels, leading to a series of cardiovascular problems. Based on this clinical background, the simulated original valve is designed to simulate the abnormal state of the original valve. Specifically, by adjusting the internal structure or materials, abnormal conditions such as leaflet stiffness and deformation caused by calcification or other pathological factors can be simulated.

[0031] For the highly transparent and compliant valve testing chamber 2, considering the unique environment surrounding the aorta and pulmonary artery, this application further optimized the design of the highly transparent and compliant valve testing chamber 2 to create a testing environment that more closely resembles real physiological conditions. The aortic sinus, as the dilated portion at the origin of the aorta, is crucial to the normal functioning of the aortic valve in terms of its morphology and function. Therefore, when the test subject is an artificial aortic valve, the highly transparent and compliant valve testing chamber 2 is designed to simulate the aortic sinus structure. The pulmonary sinus, as the dilated chamber at the origin of the pulmonary artery, although its morphology differs from the aortic sinus, also plays a key role in the function of the pulmonary valve. Therefore, when the test subject is an artificial pulmonary valve, the highly transparent and compliant valve testing chamber 2 is designed to resemble the pulmonary sinus structure.

[0032] Furthermore, to enhance the applicability of the test, this application further considers the diversity of the artificial heart valve 8. During the test, the artificial heart valve 8 can be selected as a mechanical valve or a bioprosthetic valve, both of which are widely used in clinical practice. Among them, mechanical valves are mainly made of bileaflet pyrolytic carbon material, while bioprosthetic valves are mainly made of biological tissues such as porcine pericardium or bovine pericardium.

[0033] In this embodiment, to simulate the stress on the highly transparent and compliant valve test chamber 2 by human tissue, at least one interface is provided on the device body 1; the device body 1, the highly transparent and compliant valve test chamber 2, the first sealing transition member 3, and the second sealing transition member 4 constitute a cavity, and the interface is used to inject a pressure medium into the cavity; it should be noted that these pressure media include, but are not limited to, liquids and air, and can be flexibly selected according to specific test requirements and simulation targets.

[0034] Meanwhile, to ensure the airtightness of the main body 1 of the device and prevent the pressure medium inside the cavity from leaking out and affecting the accuracy of the test, sealing gaskets 9 are provided at the connection points between the main body 1 and the first sealing transition piece 3 and the second sealing transition piece 4, the connection points between the first pipe connector 5 and the first sealing transition piece 3, and the connection points between the second pipe connector 6 and the second sealing transition piece 4.

[0035] To ensure that the highly transparent and compliant valve test chamber 2 and the simulated native valve and human blood vessels have similar diastolic and constrictive properties, both are made of silicone, mimicking the native valve. Specifically, by finely adjusting the hardness and wall thickness of the silicone model, a high degree of simulation of the diastolic and constrictive characteristics of the native valve and human blood vessels can be achieved.

[0036] In some implementations, to facilitate observation of the highly transparent and compliant valve test cavity 2, at least one side of the main body 1 of the device is made of highly transparent material.

[0037] It should be emphasized that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all changes falling within the meaning and scope of the equivalents of the claims be included within this utility model.

Claims

1. An artificial heart valve testing device, characterized in that, include: The device consists of a main body (1), a highly transparent and compliant valve testing chamber (2), a first sealing transition piece (3), a second sealing transition piece (4), a first tubing connector (5), and a second tubing connector (6). The first end of the highly transparent and compliant valve testing chamber (2) is connected to the first conduit connector (5) via the first sealing transition member (3), and the second end of the highly transparent and compliant valve testing chamber (2) is connected to the second conduit connector (6) via the second sealing transition member (4). The main body (1) of the device is connected to the first sealing transition member (3) and the second sealing transition member (4) respectively, and the highly transparent and compliant valve model is fixed inside the main body (1); The highly transparent and compliant valve test chamber (2) is provided with a simulated native valve clamp (7), which clamps the artificial heart valve (8) inside the highly transparent and compliant valve test chamber (2).

2. The apparatus according to claim 1, characterized in that, Sealing gaskets (9) are provided at the connection points of the main body (1) of the device with the first sealing transition piece (3) and the second sealing transition piece (4), the connection points of the first pipe connector (5) with the first sealing transition piece (3), and the connection points of the second pipe connector (6) with the second sealing transition piece (4).

3. The apparatus according to claim 1, characterized in that, An interface is provided on the main body (1) of the device, which is used to inject a pressure medium into the cavity formed by the main body (1), the highly transparent and compliant valve test chamber (2), the first sealing transition member (3) and the second sealing transition member (4).

4. The apparatus according to claim 1, characterized in that, The artificial heart valve (8) is one of the following: artificial aortic valve, artificial pulmonary valve, artificial mitral valve, and artificial tricuspid valve.

5. The apparatus according to claim 4, characterized in that, When the artificial heart valve (8) is the artificial aortic valve, the highly transparent compliant valve test cavity (2) is an aortic sinus structure; when the artificial heart valve (8) is the artificial pulmonary valve, the highly transparent compliant valve test cavity (2) is a pulmonary sinus structure.

6. The apparatus according to claim 1, characterized in that, The simulated native valve and the highly transparent and compliant valve test chamber (2) are made of silicone.

7. The apparatus according to claim 1, characterized in that, The artificial heart valve (8) is a mechanical valve or a biological valve.

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