Multiple access pump blood device

Abstract

The application provides a multi-inlet blood pumping device, and relates to the technical field of medical apparatuses.The blood pumping device comprises a pipe body, a pump assembly and a one-way valve; the head end of the pipe body enters the left ventricle after passing through the aorta; the tail end is connected with the pump assembly; the pipe body comprises a plurality of blood pumping vessels; the blood pumping vessels are provided with an inlet in the left ventricle and an outlet in the pipe wall located in the aorta; the blood pumping vessels are provided with the one-way valve; the one-way valve controls the outlet to be closed and the inlet to be opened when the blood pumping vessels pump blood; the inlet is closed and the outlet is opened when blood is transfused; the blood pumping vessels comprise a proximal apical pipe and a distal apical pipe; the pump assembly is electrically connected with a controller, and the controller controls the proximal apical pipe to pump blood first and the distal apical pipe to pump blood later.In the application, the blood in the left ventricle is layered and evacuated, the left ventricle side wall is driven to move in accordance with a healthy rhythm in the diastolic phase and the systolic phase, the blood flow movement of the intraventricular coronary artery and the coronary microcirculation is improved, the myocardial cell repair is promoted, and the symptoms of myocardial contraction weakness of the patient are effectively relieved.

Description

TECHNICAL FIELD

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

[0002] The heart is an important organ for providing power for blood circulation in 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 whole body organs. Heart failure is a serious threat to human life, and about 1 / 5 of heart disease patients worldwide 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 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 helps patients find suitable donors or fight for operation time.

[0004] Heart disease patients often have symptoms of left ventricular myocardial contractile dysfunction, which is manifested as an increase in pressure caused by the accumulation of blood in the left ventricle and / or left atrium of the patient, which cannot be emptied in time, and then causes an increase in pulmonary vein and pulmonary capillary pressure, which is prone to dilation and congestion.

[0005] At this time, the patient may have no obvious symptoms when resting, but when physically active, the pulmonary vein and pulmonary capillary pressure further increase due to increased blood flow, and immediately appear difficulties, cough, cyanosis, and even acute pulmonary edema. Long-term overload of pulmonary circulation blood volume can cause an increase in pulmonary artery pressure. Long-term pulmonary hypertension causes pulmonary arteriole spasm and hardening, and causes right ventricular hypertrophy and dilation, and then right ventricular failure can occur.

[0006] However, the current blood pumping device can only help patients pump blood and cannot relieve the symptoms of left ventricular myocardial contractile dysfunction. SUMMARY

[0007] (I) Technical problems solved

[0008] In view of the deficiencies of the prior art, the present application provides a multi-inlet blood pumping device, which solves the problem that the blood pumping device cannot relieve the symptoms of left ventricular myocardial contractile dysfunction of the patient.

[0009] (II) Technical Solution

[0010] To achieve the above object, the present application is implemented by the following technical solution:

[0011] A multi-inlet blood pumping device, comprising a tube body, a pump assembly and a one-way valve.

[0012] The head end of the tube body is inserted from the femoral artery, passes through the aorta and enters the left ventricle; the tail end of the tube body is connected with the pump assembly.

[0013] The tube body comprises a plurality of blood pumping vessels; the blood pumping vessels are provided with an inlet in the left ventricle and an outlet in the tube wall located in the aorta.

[0014] The blood pumping vessels are provided with a one-way valve, which controls the outlet to be closed and the inlet to be opened when the corresponding blood pumping vessel is pumping blood, and controls the inlet to be closed and the outlet to be opened when the blood pumping vessel is transfusing blood.

[0015] The blood pumping vessels comprise a proximal apical tube and a distal apical tube.

[0016] The inlet of the proximal apical tube is close to the apex of the heart, and the inlet of the distal apical tube is away from the apex of the heart.

[0017] The pump assembly is electrically connected with a controller, and during the blood pumping process, the controller controls the proximal apical tube to pump blood first and the distal apical tube to pump blood later.

[0018] Preferably, the pump assembly comprises a plurality of pump monomers, and the pump monomers are connected with the blood pumping vessels one by one.

[0019] Preferably, the pump monomers and the blood pumping vessels are connected through a blood chamber.

[0020] Preferably, the one-way valve comprises a valve piece and a wedge-shaped sealing ring.

[0021] The bottom end of the valve piece is rotationally connected with the tube wall of the blood pumping vessel below the outlet.

[0022] The sealing ring is arranged inside the outlet, and the valve piece is attached to the inside of the sealing ring when the valve piece is closed, and the circumference of the valve piece is greater than the outer ring circumference of the sealing ring.

[0023] Preferably, the tube body further comprises a atrial blood pumping vessel, the head end of the atrial blood pumping vessel passes through the aorta and the left ventricle and enters the left atrium, and the inlet of the atrial blood pumping vessel is arranged in the left atrium.

[0024] Preferably, the outer wall of the atrial blood pumping vessel is provided with a fixing clamp, and the fixing clamp connects the atrial blood pumping vessel with the mitral valve.

[0025] Preferably, the tube body further includes a trachea, the head end of which is connected to a suction cup. The suction cup is adsorbed onto the side wall of the left ventricle by the negative pressure provided by the trachea, and the suction cup is provided with a traction arm extending outside the body.

[0026] (III) Beneficial Effects

[0027] This invention provides a multi-inlet blood pumping device. Compared with the prior art, it has the following advantages:

[0028] In this invention, the head end of the tube passes through the aorta and enters the left ventricle; the tail end is connected to a pump assembly; the tube includes multiple pump vessels; the pump vessels have an inlet in the left ventricle and an outlet in the tube wall located within the aorta; the pump vessels are equipped with a one-way valve, which controls the outlet to close and the inlet to open when blood is drawn from the pump vessels; and the inlet to close and the outlet to open when blood is transfused; the pump vessels include a proximal apical tube and a distal apical tube; the pump assembly is electrically connected to a controller, controlling the proximal apical tube to draw blood first, followed by the distal apical tube, so that the blood in the left ventricle is stratified and emptied, driving the left ventricular lateral wall to move in a healthy rhythm during diastole and systole, improving the coronary artery and coronary microcirculation blood flow within the ventricular wall, promoting myocardial cell repair, and effectively relieving the patient's symptoms of myocardial contractility weakness. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is a schematic diagram of the blood pumping device in Embodiment 1 of the present invention;

[0031] Figure 2 This is a schematic diagram of the working process of the blood pumping device in Embodiment 1 of the present invention;

[0032] Figure 3 This is a schematic diagram illustrating the working principle of the blood pumping device in Embodiment 1 of the present invention;

[0033] Figure 4 This is a schematic diagram of the blood pumping device in Embodiment 2 of the present invention;

[0034] Figure 5 This is a schematic diagram of the blood pumping device in Embodiment 3 of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the trachea, suction cup, and traction arm in Embodiment 3 of the present invention. Detailed Implementation

[0036] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0037] The embodiments of the present application provide a multi-entry blood pumping device, and solve the problem that a blood pumping device cannot relieve the symptom of left ventricular myocardial contractile weakness of a patient.

[0038] The technical solutions in the embodiments of the present application are as follows to solve the above technical problems:

[0039] In the embodiments of the present application, the head end of the pipe body enters the left ventricle after passing through the aorta, and the tail end is connected with the pump assembly; the pipe body comprises a plurality of blood pumping vessels; the blood pumping vessel is provided with an inlet in the left ventricle and an outlet in the pipe wall located in the aorta; the blood pumping vessel is provided with a one-way valve, the one-way valve controls the outlet to be closed and the inlet to be opened when the blood pumping vessel pumps blood; the inlet is closed and the outlet is opened when blood is transfused; the blood pumping vessel comprises a near-apex tube and a far-apex tube; the pump assembly is electrically connected with the controller, the near-apex tube is controlled to pump blood first, and the far-apex tube is controlled to pump blood later, so that the blood in the left ventricle is layered and emptied, the left ventricular lateral wall is driven to move according to a healthy rhythm in the diastolic period and the systolic period, the blood flow movement of the intraventricular coronary artery and the coronary microcirculation is improved, the myocardial cell repair is promoted, and the symptom of myocardial contractile weakness of the patient is effectively relieved.

[0040] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the drawings of the specification and specific embodiments.

[0041] Embodiment 1:

[0042] As shown in Figure 1 , Figure 2 The present application provides a multi-entry blood pumping device, which comprises a pipe body, a pump assembly and a one-way valve.

[0043] The head end of the pipe body is inserted from the femoral artery and enters the left ventricle after passing through the aorta; the tail end of the pipe body is connected with the pump assembly.

[0044] The pipe body comprises a plurality of blood pumping vessels; the blood pumping vessel is provided with an inlet in the left ventricle and an outlet in the pipe wall located in the aorta.

[0045] The blood pumping vessel is provided with a one-way valve, the one-way valve controls the outlet to be closed and the inlet to be opened when the blood pumping vessel pumps blood; the inlet is closed and the outlet is opened when blood is transfused.

[0046] The pump blood vessel comprises: a proximal apex tube 1 and a distal apex tube 2;

[0047] The inlet of the proximal apex tube 1 is close to the apex, and the inlet of the distal apex tube 2 is away from the apex.

[0048] The pump assembly is electrically connected with the controller. During the blood pumping process, the controller controls the proximal apex tube 1 to pump blood first, and the distal apex tube 2 to pump blood later, so that the blood in the left ventricle is layered and evacuated, and the left ventricular side wall is driven to move in accordance with the healthy rhythm in the diastolic and systolic periods, the blood flow in the coronary artery and the coronary microcirculation in the ventricular wall is improved, the myocardial cell repair is promoted, and the symptoms of myocardial contraction weakness of the patient are effectively relieved.

[0049] The pump assembly comprises a plurality of pump monomers, which are connected with the pump blood vessels one by one to control the blood pumping sequence of the pump blood vessels.

[0050] As shown in Figure 3 The pump monomer and the pump blood vessel are communicated through a blood chamber 3.

[0051] As shown in Figure 3 The one-way valve comprises: a valve plate 4 and a wedge-shaped sealing ring 5.

[0052] The bottom end of the valve plate 4 is rotationally connected with the pump blood vessel wall below the outlet.

[0053] The sealing ring 5 is arranged inside the outlet, and the valve plate 4 is attached to the inside of the sealing ring 5 when the valve plate 4 is closed, and the circumference of the valve plate 4 is greater than the outer ring circumference of the sealing ring 5.

[0054] During the blood pumping process, the valve plate 4 is attached to the sealing ring 5 under the action of blood pressure, so that the outlet is closed; in this way, the blood in the left ventricle is pumped out.

[0055] During the blood transfusion process, the valve plate 4 is turned inward under the action of blood pressure, and the pump blood vessel below the outlet is blocked, and the outlet is opened, so that the blood is input into the aorta.

[0056] Embodiment 2:

[0057] As shown in Figure 4 The pipe body further comprises: an atrial pump blood vessel 6, the head end of the atrial pump blood vessel 6 enters the left atrium after passing through the aorta and the left ventricle, and the inlet of the atrial pump blood vessel 6 is arranged in the left atrium for pumping blood and rehabilitation training of the left atrium.

[0058] As shown in Figure 4 The outer wall of the atrial pump blood vessel 6 is provided with a fixing clamp, which connects the atrial pump blood vessel 6 with the mitral valve to prevent the head end of the atrial pump blood vessel 6 from slipping out of the left atrium.

[0059] Embodiment 3:

[0060] As shown inFigure 5 、 Figure 6 As shown in the figure, the pipe body further comprises a trachea 7, a head end of the trachea 7 is communicated with a sucking disc 8, the sucking disc 8 is adsorbed on the left ventricular side wall through the negative pressure provided by the trachea 7, the sucking disc 8 is provided with a traction arm 9 extending to the outside of the body, the traction arm 9 drags the sucking disc 8 to drive the left ventricular side wall to move according to a healthy rhythm, improves the blood flow movement of the intraventricular coronary artery and the coronary microcirculation, promotes the myocardial cell repair, and effectively relieves the symptoms of myocardial contractile weakness of the patient.

[0061] Compared with the prior art, the present application has the following beneficial effects:

[0062] In the embodiment of the present application, the head end of the pipe body enters the left ventricle after the aorta, the tail end is connected with the pump assembly, the pipe body comprises a plurality of pump blood vessels, the pump blood vessels are provided with an inlet in the left ventricle and an outlet in the pipe wall located in the aorta, the pump blood vessels are provided with a one-way valve, the one-way valve controls the outlet to be closed and the inlet to be opened when the pump blood vessels pump blood, and the inlet to be closed and the outlet to be opened when blood is transfused, the pump blood vessels comprise a near-apex tube and a far-apex tube, the pump assembly is electrically connected with the controller, the near-apex tube is controlled to pump blood first, and the far-apex tube is controlled to pump blood later, so that the blood in the left ventricle is layered and pumped out, the left ventricular side wall is driven to move according to a healthy rhythm in the diastolic and systolic periods, the blood flow movement of the intraventricular coronary artery and the coronary microcirculation is improved, the myocardial cell repair is promoted, and the symptoms of myocardial contractile weakness of the patient are effectively relieved.

[0063] It should be noted that, in the present document, the terms such as first and second, etc., are used merely to differentiate one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Also, the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a list of elements does not only include those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0064] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-inlet blood pumping device, characterized in that, The blood pumping device includes: a tubing body, a pump assembly, and a check valve; The head end of the tube is inserted into the femoral artery, passes through the aorta, and enters the left ventricle; the tail end of the tube is connected to the pump assembly. The tube body includes multiple pump vessels; the pump vessels have an inlet in the left ventricle and an outlet in the tube wall located within the aorta; The pump vessel is equipped with a one-way valve, which controls the outlet to close and the inlet to open when the corresponding pump vessel draws blood; and the inlet to close and the outlet to open when transfusing blood. The pumping vessels include: a proximal apical tube (1) and a distal apical tube (2); The entrance of the proximal apical tube (1) is close to the apex of the heart, while the entrance of the distal apical tube (2) is far from the apex of the heart. The pump assembly is electrically connected to the controller. During the blood pumping process, the controller controls the proximal apical tube (1) to draw blood first, and the distal apical tube (2) to draw blood later.

2. The multi-inlet blood pumping device as described in claim 1, characterized in that, The pump assembly includes multiple pump units, each of which is connected to a corresponding pump tube.

3. The multi-inlet blood pumping device as described in claim 2, characterized in that, The pump unit and the pump blood vessel are connected through the blood chamber (3).

4. The multi-inlet blood pumping device as described in claim 1, characterized in that, The one-way valve includes: a valve plate (4) and a wedge-shaped sealing ring (5); The bottom end of the valve plate (4) is rotatably connected to the pump blood vessel wall below the outlet; The sealing ring (5) is located inside the outlet. When the valve plate (4) is closed, it fits against the inside of the sealing ring (5), and the circumference of the valve plate (4) is greater than the outer circumference of the sealing ring (5).

5. The multi-inlet blood pumping device as described in any one of claims 1 to 4, characterized in that, The tube also includes an atrial pump vessel (6), the head of which passes through the aorta and the left ventricle and enters the left atrium. The entrance of the atrial pump vessel (6) is located in the left atrium.

6. The multi-inlet blood pumping device as described in claim 5, characterized in that, The outer wall of the atrial pump vessel (6) is provided with a fixing clip, which connects the atrial pump vessel (6) to the mitral valve.

7. The multi-inlet blood pumping device as described in any one of claims 1 to 4, characterized in that, The tube also includes a trachea (7), the head end of which is connected to a suction cup (8). The suction cup (8) is attached to the side wall of the left ventricle by the negative pressure provided by the trachea (7). The suction cup (8) is provided with a traction arm (9) extending outside the body.

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