Blood pumping device power system

Abstract

The application provides a blood pumping device power system and relates to the technical field of medical devices.The power system comprises a pump assembly and a pipe body;the pump assembly comprises a first pump and a second pump;the pipe body is provided with a blood pumping pipe corresponding to the first pump and the second pump;the first pump and the second pump are in communication with the corresponding blood pumping pipe ends;the first pump and the second pump work alternately.In the application, during the short blood pumping pause period of blood pumping and blood infusion alternation, the second pump is in a blood pumping working state;on the contrary, during the pause period of the second pump, the first pump is in a blood pumping working state, the first pump and the second pump complement each other in the pause period, the blood flows in a pulse mode is avoided, and the burden on the patient's body caused by the unsmooth blood flow is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a power system of a blood pumping device. BACKGROUND

[0002] The heart is an important organ for providing power for blood circulation of the human body. It is divided into left and right parts, each of which contains a ventricle and an atrium. The left ventricle and the right ventricle are blocked by the interventricular septum, and the left atrium and the right atrium are blocked by the interatrial septum. The blood flow direction between the left atrium and the left ventricle is regulated by the mitral valve, and a healthy mitral valve ensures that oxygen-rich blood flows from the left atrium to the left ventricle, and then is pumped into the aorta by the left ventricle. The blood flow direction between the right atrium and the right ventricle is regulated by the tricuspid valve, and the tricuspid valve ensures that the venous blood rich in carbon dioxide flows from the right atrium to the right ventricle, and then is pumped to the pulmonary artery by the right ventricle.

[0003] High-risk heart surgery patients and heart failure patients have decreased heart pumping capacity and insufficient aortic blood supply, which can easily lead to damage to the organs of the whole body. Heart failure is a serious threat to human life, and about 1 / 5 of heart disease patients worldwide will eventually develop heart failure each year. The incidence of heart failure in China currently reaches 0.9%, and the 5-year mortality rate exceeds 60%. For a long period of time, the number of patients with advanced heart failure will be much larger than the number of donors who can provide heart transplants. The blood pumping device not only saves the lives of patients, but also provides great help for patients to find suitable donors or to fight for operation time.

[0004] However, the power system of the current blood pumping device has a temporary stagnation during the period of alternating blood extraction and blood infusion, which can cause the blood driven by the blood pumping device to flow in a pulsatile manner, and the unsmooth blood flow causes a burden to the patient's body. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the present application provides a power system of a blood pumping device, which solves the problem of unsmooth blood flow driven by the blood pumping device.

[0007] (II) Technical solutions

[0008] To achieve the above object, the present application is realized by the following technical solutions:

[0009] A power system of a blood pumping device, the power system comprising: a pump assembly and a pipe body;

[0010] The pump assembly comprises: a first pump and a second pump;

[0011] The pipe body is provided with a blood pumping pipe corresponding to the first pump and the second pump.

[0012] The first pump and the second pump are respectively connected to the end of the corresponding pump blood vessel;

[0013] The first pump and the second pump work alternately, so that during the brief stagnation period when the first pump is drawing blood and transfusing blood, the second pump is in the blood-pumping work state; conversely, during the stagnation period when the second pump is in the second pump, the first pump is in the blood-pumping work state, and the first pump and the second pump fill the stagnation period with each other.

[0014] Preferably, the first pump and the second pump are electrically connected to the controller, and the controller controls the first pump and the second pump to work alternately to fill the stagnation.

[0015] Preferably, the head end of the tube is inserted into the femoral artery, passes through the aorta, and enters the left ventricle. Each pumping vessel has an inlet in the left ventricle and an outlet in the tube wall inside the aorta.

[0016] Preferably, the pump tube is provided with a one-way valve, the one-way valve comprising: a valve plate and a wedge-shaped sealing ring;

[0017] The bottom end of the valve plate is rotatably connected to the pump vessel wall below the outlet;

[0018] The sealing ring is located inside the outlet. When the valve plate is closed, it fits against the inner side of the sealing ring, and the circumference of the valve plate is greater than the outer circumference of the sealing ring.

[0019] Preferably, the first pump and the second pump are connected to their respective pump vessels via blood chambers.

[0020] Preferably, the blood chamber is provided with a diaphragm that separates the pump assembly from the pump blood vessel.

[0021] Preferably, the first and second pumps are one or more of a diaphragm pump, a peristaltic pump, and a balloon pump.

[0022] (III) Beneficial Effects

[0023] This invention provides a power system for a blood pumping device. Compared with the prior art, it has the following advantages:

[0024] In this invention, the power system includes a pump assembly and a tubing. The pump assembly includes a first pump and a second pump. The tubing is provided with pumping vessels corresponding one-to-one with the first and second pumps. The first and second pumps are respectively connected to the ends of their corresponding pumping vessels. The first and second pumps work alternately, so that during the brief stagnation period of blood draw and transfusion, the second pump is in a pumping state. Conversely, during the stagnation period of the second pump, the first pump is in a pumping state. The first and second pumps fill the stagnation gaps, preventing blood from flowing in a pulsating manner and preventing the burden on the patient's body caused by poor blood flow. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the assembly of the blood pumping device in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the power system of the blood pumping device in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram illustrating the working principle of the blood pumping device in an embodiment of the present invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] This application provides a power system for a blood pumping device, which solves the problem of uneven blood flow driven by the blood pumping device.

[0031] The technical solution in this application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0032] In this embodiment of the invention, the power system includes a pump assembly and a tubing. The pump assembly includes a first pump and a second pump. The tubing is provided with pumping vessels corresponding one-to-one with the first and second pumps. The first and second pumps are respectively connected to the ends of their corresponding pumping vessels. The first and second pumps work alternately, such that during the brief stagnation period of blood draw and transfusion, the second pump is in a pumping state. Conversely, during the stagnation period of the second pump, the first pump is in a pumping state. The first and second pumps fill the stagnation gaps, preventing blood from flowing in a pulsating manner and preventing the burden on the patient's body caused by poor blood flow.

[0033] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0034] Example:

[0035] like Figure 1 , Figure 2 As shown, the present invention provides a power system for a blood pumping device, the power system comprising: a pump assembly and a tubing body;

[0036] The pump assembly includes: a first pump 1 and a second pump 2;

[0037] The tube body is provided with pump tubes that correspond one-to-one with the first pump 1 and the second pump 2.

[0038] The first pump 1 and the second pump 2 are respectively connected to the end of the corresponding pump blood vessel;

[0039] The first pump 1 and the second pump 2 work alternately, so that when the first pump 1 is in a brief stagnation period between blood drawing and blood transfusion, the second pump 2 is in a blood pumping state; conversely, when the second pump 2 is in a stagnation period, the first pump 1 is in a blood pumping state. The first pump 1 and the second pump 2 fill the stagnation period with each other, avoiding blood flowing in a pulsatile manner and preventing the burden on the patient's body caused by poor blood flow.

[0040] The first pump 1 and the second pump 2 are electrically connected to the controller, and the controller controls the first pump 1 and the second pump 2 to work alternately to fill the stagnation.

[0041] like Figure 1 As shown, the head end of the tube is inserted into the femoral artery, passes through the aorta, and enters the left ventricle. Each pumping vessel has an inlet in the left ventricle and an outlet in the tube wall inside the aorta.

[0042] like Figure 3 As shown, the pump tube is equipped with a one-way valve, which includes a valve plate 3 and a wedge-shaped sealing ring 4.

[0043] The bottom end of the valve plate 3 is rotatably connected to the pump blood vessel wall below the outlet;

[0044] The sealing ring 4 is disposed inside the outlet. When the valve plate 3 is closed, it fits against the inner side of the sealing ring 4, and the circumference of the valve plate 3 is greater than the outer circumference of the sealing ring 4.

[0045] During the blood pumping process, the valve plate 3 adheres to the sealing ring 4 under the action of blood pressure, thereby closing the outlet and pumping blood out of the left ventricle.

[0046] During the blood transfusion, valve plate 3 flips inward under the action of blood pressure, blocking the pump blood vessel below the outlet and opening the outlet, thereby allowing blood to be input into the aorta.

[0047] like Figure 2 , Figure 3As shown, the first pump 1 and the second pump 2 are respectively connected to their corresponding pump vessels through the blood chamber 5.

[0048] The blood chamber 5 is provided with a diaphragm 6 that separates the pump assembly from the pump vessel; this avoids excessive shearing force on red blood cells caused by exposed metal inside the pump assembly, and avoids the risk of hemolysis due to red blood cell rupture; the diaphragm 6 separates the pump assembly from the pump vessel, allowing the pump to be filled with gas or a liquid with good flowability, reducing the pump's resistance load and improving efficiency.

[0049] The first pump 1 and the second pump 2 are one or more of diaphragm pumps, peristaltic pumps and balloon pumps.

[0050] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0051] In this embodiment of the invention, the power system includes a pump assembly and a tubing. The pump assembly includes a first pump and a second pump. The tubing is provided with pumping vessels corresponding one-to-one with the first and second pumps. The first and second pumps are respectively connected to the ends of their corresponding pumping vessels. The first and second pumps work alternately, such that during the brief stagnation period of blood draw and transfusion, the second pump is in a pumping state. Conversely, during the stagnation period of the second pump, the first pump is in a pumping state. The first and second pumps fill the stagnation gaps, preventing blood from flowing in a pulsating manner and preventing the burden on the patient's body caused by poor blood flow.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," 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 elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power system for a blood pumping device, characterized in that, The power system includes: a pump assembly and a pipe body; The pump assembly includes: a first pump (1) and a second pump (2); The tube body is provided with pump vessels that correspond one-to-one with the first pump (1) and the second pump (2); The first pump (1) and the second pump (2) are respectively connected to the end of the corresponding pump blood vessel; The first pump (1) and the second pump (2) work alternately, so that when the first pump (1) is in a brief stagnation period between blood drawing and blood transfusion, the second pump (2) is in a blood pumping work state; conversely, when the second pump (2) is in a stagnation period, the first pump (1) is in a blood pumping work state, and the first pump (1) and the second pump (2) fill the stagnation between each other.

2. The power system of the blood pumping device as described in claim 1, characterized in that, The first pump (1) and the second pump (2) are electrically connected to the controller, and the controller controls the first pump (1) and the second pump (2) to work alternately to fill the stagnation.

3. The power system of the blood pumping device as described in claim 1, characterized in that, The tube is inserted into the femoral artery at its head end, passes through the aorta, and enters the left ventricle. Each pumping vessel has an inlet in the left ventricle and an outlet in the wall of the aorta.

4. The power system of the blood pumping device as described in claim 1, characterized in that, The pump tube is equipped with a one-way valve, which includes a valve plate (3) and a wedge-shaped sealing ring (4). The bottom end of the valve plate (3) is rotatably connected to the pump blood vessel wall below the outlet; The sealing ring (4) is located inside the outlet. When the valve plate (3) is closed, it fits against the inside of the sealing ring (4), and the circumference of the valve plate (3) is greater than the outer circumference of the sealing ring (4).

5. The power system of the blood pumping device as described in claim 1, characterized in that, The first pump (1) and the second pump (2) are respectively connected to the corresponding pump blood vessels through the blood chamber (5).

6. The power system of the blood pumping device as described in claim 5, characterized in that, The blood chamber (5) is provided with a diaphragm (6) that separates the pump assembly from the pump blood vessel.

7. The power system of the blood pumping device as described in any one of claims 1 to 6, characterized in that, The first pump (1) and the second pump (2) are one or more of diaphragm pumps, peristaltic pumps and balloon pumps.

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