CN202795869U - Adjustable human body aorta vessel model device - Google Patents

Abstract

The utility model relates to an adjustable human body aortic vessel model device, comprising ascending aorta, aortic arch, three branches on the aortic arch consisting of brachiocephalic artery, left common carotid artery and left subclavian artery, descending aorta and abdominal aorta , left and right common iliac arteries, aortic main circuit, and a blood circulation device composed of an artificial heart and a reservoir, characterized in that: the aortic main circuit and the three branches of the aortic arch are the brachiocephalic artery, the left common carotid artery, the left The subclavian arteries are respectively provided with pressure regulators for adjusting the pressure of the circuit by adjusting the diameter of the tube. The utility model can separately adjust the pressure, temperature and circulation capacity in the aortic circuit, so as to realize the blood circulation and hemodynamic changes under the physiological or pathological conditions of the human aorta in the aortic model, so as to provide clinical Lay the foundation for research related research.

Description

An adjustable human aortic vessel model device

technical field

The utility model relates to the relevant technical field of medical equipment, in particular to a human body aortic blood vessel model device with adjustable pressure, temperature and circulation capacity. the

Background technique

With the improvement of living standards and the development of medical technology, the average life expectancy of Chinese people has been significantly prolonged, and the incidence of aortic degenerative disease has increased. Coupled with the improvement of medical imaging technology, the clinical incidence of aortic disease has also increased significantly. The need for clinical treatment has increased. Traditional treatment methods require thoracotomy or laparotomy for artificial vascular replacement. The trauma is huge, and the elderly and patients with aortic disease with many coexisting diseases are often difficult to tolerate, and the surgery-related complication rate and mortality rate are extremely high. The newly developed endovascular repair technology of aortic vessels has the characteristics of less trauma, high safety and quick recovery because it does not require thoracotomy or laparotomy. The endoluminal graft system has been developed into the third generation of aortic endoluminal stent and introduction system, and the treatment scope has also expanded from the anatomically simple unbranched descending aortic segment to the anatomically complex multi-branched aortic arch segment. the

However, the introduction of the new system, intracavitary operation, device evaluation and fluid mechanics research all urgently need an aortic model. The blood circulation device of this model can more realistically simulate the pressure changes of the human aorta and branches, and the hemodynamic changes. , temperature changes and cycle capacity self-stabilization. the

However, the blood circulation device of the existing blood vessel model cannot achieve this purpose. The shape of the existing vascular model is made according to the human aortic tree structure. The main structure includes the ascending aorta, aortic arch, 3 branches on the aortic arch (brachiocephalic artery, left common carotid artery, left subclavian artery), descending aorta , abdominal aorta, left and right common iliac arteries (the main branch of the abdominal aorta); the structure of the blood circulation device mainly includes an artificial heart and a reservoir (with a control host for controlling the supply and discharge of simulated blood); when in use, the artificial heart The ascending aorta is connected to the ascending aorta of the blood vessel model, and the other end is connected to the reservoir, and then connected to the return end of the model (referring to the circuit part after the confluence of the left and right common iliac arteries and the three branch arteries of the aortic arch) to form an airtight seal After the simulated blood is added to the circuit, the artificial heart is activated to drive the simulated blood to circulate in the blood vessel model. After the blood vessel model and circulation simulation device are started, the pressure, temperature and liquid volume of the simulated blood in the aorta and branch arteries will not change. When performing the experiment and detection of the intracavitary device, of course, it cannot simulate the intervention of the experimental device into the arterial system. The changes in pressure, temperature and volume caused by these changes, as well as the impact of these changes on new intracavity devices, make it impossible to conduct hemodynamic studies. the

Therefore, the existing vascular models and blood circulation simulators cannot simulate the hemodynamic changes in the human aorta, let alone meet the needs of clinical research and new technology development. the

Utility model content

The purpose of this utility model is to improve the blood circulation device on the basis of the existing aortic model, and provide a new type of adjustable human aortic blood vessel model device, which can control the pressure, temperature and circulation in the aortic circuit. The capacity is adjusted separately to realize the blood circulation and hemodynamic changes under the physiological or pathological conditions of the human aorta in the aorta model, so as to lay the foundation for clinical and scientific research. the

In order to achieve the above object, the utility model adopts the following technical solutions:

An adjustable human aortic vessel model device, including ascending aorta, aortic arch, three branches on the aortic arch consisting of brachiocephalic artery, left common carotid artery, and left subclavian artery, descending aorta, abdominal aorta, left and right common iliac arteries The main circuit of the artery, the aorta, and the blood circulation device composed of an artificial heart and a fluid reservoir, wherein the main circuit of the aorta and the three branches of the aortic arch are respectively set on the brachiocephalic artery, left common carotid artery, and left subclavian artery There is a pressure regulator (built-in pressure gauge and regulating valve) to adjust the circuit pressure by adjusting the pipe diameter. the

According to the adjustable human body aortic vessel model device described in the preferred embodiment of the present invention, the liquid reservoir is provided with an adjustable liquid heating device. The liquid storage tank is provided with a pressure-gated channel, which controls the exchange of the liquid in the tank with the outside world according to the pressure. The entire reservoir structure is called the "venous pool". the

According to the adjustable human body aortic blood vessel model device described in the preferred embodiment of the present invention, a blood vessel bypass is connected in parallel on the aortic main circuit, and a pressure-gated channel for automatically regulating the pressure in the whole blood vessel model is installed on it. . the

Owing to adopting above technical characterictic, make the utility model have following advantage and positive effect compared to prior art:

The adjustable human aortic vessel model device described in the utility model can separately adjust the pressure, temperature and circulation capacity in the aortic circuit, so as to realize the relatively real simulated human aortic physiological or pathological conditions in the aortic model. Changes in blood circulation and hemodynamics, thus laying the foundation for clinical and scientific research. the

Description of drawings

Fig. 1 is the structural representation of the utility model adjustable human body aortic vessel model device;

Fig. 2 is the structural representation of venous pool;

Fig. 3 is a structural schematic diagram of a pressure regulator. the

Explanation of reference signs:

In Figure 1: 1.1 ascending aorta 1.2 aortic arch 1.3 descending aorta 1.4 abdominal aorta 1.5 brachiocephalic artery 1.6 left common carotid artery 1.7 left subclavian artery 1.8 left and right common iliac arteries

2.1 Brachiocephalic Dry Pressure Regulator 2.2 Left Common Carotid Artery Pressure Regulator 2.3 Left Subclavian Artery Pressure Regulator 2.4 Total Circuit Pressure Regulator

3 Vascular bypass 3.1 Vascular bypass pressure-gated channel

4 venous pools

5Artificial heart 5.1 Ascending aortic end 5.2 Returning heart end

6 aortic main circuit

The direction of the arrow in the model is the direction of simulated blood flow

In Figure 2:

4 Venous pool 4.1 Liquid reservoir 4.2 Temperature controller 4.3 Venous pool pressure-gated channel 4.4 Simulated blood supplement inlet 4.5 Blood vessel model and external liquid exchange port 4.6 Venous pool inlet 4.7 Venous pool outlet

In Figure 3:

2 Pressure regulator A pressure gauge B regulating valve

Detailed ways

Preferred embodiments of the utility model are described in detail below in conjunction with the accompanying drawings, but the utility model is not limited to these embodiments. The utility model covers any replacement, modification, equivalent method and scheme made on the spirit and scope of the utility model. In order to make the public have a thorough understanding of the utility model, specific details are described in the following preferred embodiments of the utility model, and those skilled in the art can fully understand the utility model without the description of these details. the

An adjustable human aortic vessel model device as shown in Figure 1, Figure 2 and Figure 3, on the basis of the traditional aortic model, three branch brachiocephalic arteries in the main circuit of the aorta and the aortic arch 1.2 1.5, the left common carotid artery 1.6, and the left subclavian artery 1.7 are respectively provided with pressure regulators 2.1, 2.2, and 2.3 (built-in pressure gauges and regulating valves) to adjust the circuit pressure by adjusting the size of the tube diameter. A total circuit pressure regulator 2.4 is set between the devices 2.1, 2.2, 2.3 and the venous pool 4; an adjustable liquid heating device 4.2 (ie, a temperature controller) and a venous pool pressure gating channel 4.3 are set in the liquid reservoir 4.1 According to the pressure, the liquid in the pool can be controlled to exchange with the outside world; a vascular bypass 3 is connected in parallel to the aortic main circuit 6, and a vascular bypass pressure-gated channel 3.1 that automatically regulates the pressure in the entire vascular model is installed on it. the

Before the introduction of a new system, intracavitary operation, device evaluation, or fluid mechanics research, etc., first inject simulated blood into the aortic vessel model through the venous pool 4, and the liquid volume reaches the circulation capacity requirement (marked scale). The valve is closed and the aortic vessel model becomes a closed circuit. Set the temperature of the thermostat 4.2 and the pressure regulator 2 according to the requirements of the test or experiment, set the rotating speed and start the artificial heart 5, the simulated blood ejected by the pump is injected into the ascending aorta 1.1, and then flows into the aortic arch 1.2, descending aorta 1.3, abdomen Aorta 1.4, brachiocephalic artery 1.5, left common carotid artery 1.6, left subclavian artery 1.7 and left and right common iliac arteries 1.8, finally merged into the aortic main circuit 6, then injected into the venous pool 4, and injected back from the return port 5.2 The artificial heart completes the circulation. During this process, the temperature regulation of the blood in the model is realized through the temperature controller 4.2, and the overall pressure and volume regulation in the model is through the pressure regulator 2.4, the vascular bypass 3 and the vascular bypass pressure-gated channel 3.1, The venous pool pressure-gated channel 4.3 is realized, and its principle is: on the one hand, when the overall pressure of the model exceeds the preset value, the vascular bypass pressure-gated channel 3.1 will be automatically opened, and the simulated blood on the aortic main circuit 6 will pass through the After being shunted through the vascular bypass 3, it flows into the venous pool 4. On the other hand, if the circulation resistance is too high (all pressure regulators are closed), the artificial heart runs too fast, and the pressure rises rapidly, and the parallel bypass cannot be used for buffering temporarily. , will cause a relatively excess volume in the circulation, and the pressure-gated channel 4.3 of the venous pool will be opened to discharge excess liquid in the circulation from the blood vessel model. On the contrary, if the circulation capacity is insufficient and the pressure cannot be reached, the pressure-gated channel 4.3 of the venous pool can also be directly replenished. the

In a word, one of the main features and advantages of the present utility model is that it can more realistically simulate the self-adjusting mechanism of pressure, temperature and circulation capacity in the process of human aortic blood circulation. Under pathological conditions, the distribution of blood flow and pressure in the aorta and its branches can be used to test the release and stress of intraluminal grafts under different hemodynamic conditions. Another advantage is that the existing vascular models and circulation devices can be improved. New components such as pressure regulators, pressure-gated channels, and temperature controllers can be purchased in the market, and the installation is simple and convenient, suitable for laboratories of all sizes , clinical and scientific research institutions. the

The preferred embodiment of the utility model is only used to help set forth the utility model. The preferred embodiments do not exhaust all details, nor do they limit the utility model to the specific implementations described. Obviously, many modifications and variations can be made based on the contents of this specification. This description selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that those skilled in the art can make good use of the utility model. The invention is to be limited only by the claims and their full scope and equivalents. the

Claims (5)

1. adjustable human body aorta vessel model device, comprise aorta ascendens, the arch of aorta, on the arch of aorta by the truncus brachiocephalicus artery, left common carotid artery, three branches that left subclavian artery consists of, descending aorta, abdominal aorta, left and right sides arteria iliaca communis, the sustainer major loop, and by artificial heart, the blood circulation device that liquid storage pool consists of is characterized in that: the truncus brachiocephalicus artery of three branches of sustainer major loop and the arch of aorta, left common carotid artery, be respectively arranged with on the left subclavian artery by regulating pipe diameter size with the pressure governor of regulating loop pressure.

2. adjustable human body aorta vessel model device as claimed in claim 1 is characterized in that: be provided with regulatable liquid warming device in the described liquid storage pool.

3. adjustable human body aorta vessel model device as claimed in claim 1 or 2 is characterized in that: be provided with the pressure gated channel in the described liquid storage pool.

4. adjustable human body aorta vessel model device as claimed in claim 1 or 2 is characterized in that: be parallel with a blood vessel bypass on the described sustainer major loop, be provided with the pressure gated channel on the described blood vessel bypass.

5. adjustable human body aorta vessel model device as claimed in claim 3 is characterized in that: be parallel with a blood vessel bypass on the described sustainer major loop, be provided with the pressure gated channel on the described blood vessel bypass.

Images