Decompression pump in aorta

Abstract

The embodiment of the invention provides an in-aorta pressure reduction pump which comprises a diaphragm assembly capable of enabling liquid to flow in one direction and a pressure reduction pump, the pressure reduction pump is connected with the diaphragm assembly, and the flow directions of the pressure reduction pump and the diaphragm assembly are the same; the diaphragm assembly comprises a diaphragm body used for clamping the inner side of the aorta. In the direction of the axis of the diaphragm body, the outline of the pressure reduction pump is smaller than the size of the diaphragm body; the input end and the output end of the pressure reduction pump are located on the two sides of the plate face of the diaphragm body respectively. According to the technical scheme, the aorta is clamped through the diaphragm assembly, a buffer area can be formed outside the aortic valve, the buffer area can normally circulate during aorta ejection and is closed in the diastolic period, then a low-pressure area is formed in the buffer area in the diastolic period in a decompression pump extraction mode, the resistance of left ventricle ejection in the systolic period is reduced, and the cardiac effect is improved. And blood is prevented from flowing back through the incompletely closed aortic valve, so that the heart load is reduced, and the treatment effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an intra-aortic decompression pump. Background Art

[0002] When heart failure occurs, the heart's pumping function decreases. Since the heart's work mainly overcomes the pressure resistance of the aorta, the pressure of the ascending aorta can be reduced to reduce the heart's work, thereby improving cardiac function, or pumping fluid from the left ventricle to assist the heart. To this end, the following methods are adopted in the prior art to solve this problem: First, a left ventricular assist device is implanted in the heart, and blood is pumped out of the heart through this device to reduce the load. However, implanting foreign objects in the heart will affect the normal function of the heart to a certain extent, and some sensitive patients cannot even use it; Second, an IABP (intra-aortic balloon pump) device is implanted in the descending aorta. This device increases the perfusion pressure of the heart and brain through diastolic counterpulsation, thereby improving the function of the heart and peripheral organs. However, this device does not directly assist the heart in doing work and requires accurate identification of the systolic and diastolic phases. In actual clinical applications, patients often have problems such as tachycardia and ventricular fibrillation. At this time, it is very difficult to judge the diastolic and systolic phases. Therefore, the application of this IABP device is very limited. In addition, in patients with aortic insufficiency, there is a situation where blood flows back to the left ventricle during diastole, and there is currently no corresponding method or device to deal with it.

[0003] Therefore, how to implement an efficient and practical intra-aortic decompression pump that neither needs to be implanted inside the heart nor needs to judge the diastolic and systolic phases, is used to reduce the left ventricular ejection resistance and thus improve cardiac function, and reduce or even avoid blood reflux when the aortic valve is not tightly closed, is a problem that needs to be solved. Summary of the Invention

[0004] An embodiment of the present invention provides an intra-aortic decompression pump for reducing the left ventricular ejection resistance and thus improving cardiac function, and reducing or avoiding blood reflux when the aortic valve is not tightly closed.

[0005] To achieve the above object, an embodiment of the present invention provides an intra-aortic decompression pump, including a diaphragm assembly that enables one-way fluid flow and a decompression pump that enables one-way fluid flow. The decompression pump is connected to the diaphragm assembly, and the fluid flow direction of the decompression pump is the same as that of the diaphragm assembly; the diaphragm assembly includes a diaphragm body for clamping the inner side of the aorta, and the diaphragm body is a circular plate-like structure; in the direction along the axis of the diaphragm body, the outer contour size of the decompression pump is smaller than the outer diameter size of the diaphragm body; the input end and the output end of the decompression pump are respectively located on both sides of the plate surface of the diaphragm body.

[0006] Further, the outer diameter of the diaphragm body is 3 mm - 80 mm.

[0007] Further, the diaphragm assembly further includes a one-way diaphragm and a first limiting block fixedly connected to the diaphragm body; a flow-through hole matching the one-way diaphragm is formed on the diaphragm body, and one end of the one-way diaphragm away from the decompression pump is connected to the diaphragm body; the first limiting block is located on the side opposite to the opening direction of the one-way diaphragm.

[0008] Further, the decompression pump is located outside the operating trajectory when the one-way diaphragm opens.

[0009] Further, the decompression pump includes a liquid guide hose, a sleeve, and a medium hose; both ends of the liquid guide hose respectively form the input end and the output end of the decompression pump; the sleeve is wrapped outside the liquid guide hose, and both ends of the sleeve are fixedly connected to the outer side wall of the liquid guide hose, so as to form a closed annular extrusion cavity between the sleeve and the liquid guide hose; the inner end of the medium hose communicates with the extrusion cavity, and the outer end of the medium hose is used to connect to a control pump; a decompression pump one-way valve for making the liquid flow unidirectionally is further arranged inside the liquid guide hose.

[0010] Further, the working medium of the control pump is liquid or gas.

[0011] Further, the decompression pump one-way valve includes a one-way valve flap and a second limiting block; the one-way valve flap is a circular diaphragm structure matching the inner diameter of the liquid guide hose, and one end of the one-way valve flap is fixedly connected to the inner wall of the liquid guide hose; the size of the second limiting block is smaller than the inner diameter of the liquid guide hose, and the second limiting block is located on the side opposite to the opening direction of the one-way valve flap.

[0012] Further, there are two decompression pump one-way valves in total, and the two decompression pump one-way valves are respectively arranged at both ends of the liquid guide hose, and the opening directions of the two decompression pump one-way valves are the same.

[0013] Further, the diaphragm body is further provided with a guide wire connecting portion for connecting a guide wire.

[0014] Further, an annular adjustment balloon is further arranged on the outer edge of the diaphragm body, and the adjustment balloon is connected to an adjustment balloon control pump through a hose.

[0015] The above technical solution has the following beneficial effects:

[0016] In this technical solution, the aortic artery is clamped by the diaphragm body of the diaphragm assembly, and a buffer zone can be formed outside the aortic valve. This buffer zone can flow normally during aortic ejection, but closes during diastole. Then, through the extraction by the decompression pump, a low-pressure area is formed in the buffer zone during diastole, reducing the resistance of the left ventricular ejection during cardiac systole, and preventing blood from flowing back through the insufficient aortic valve, thereby reducing the cardiac load and achieving a therapeutic effect. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of an intra-aortic decompression pump according to an embodiment of the present invention;

[0019] Figure 2 is a schematic structural diagram of an intra-aortic decompression pump according to an embodiment of the present invention (in the top view direction);

[0020] Figure 3 is an application schematic diagram of an intra-aortic decompression pump according to an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of the working principle of the decompression pump in the embodiment of the present invention (extrusion stage);

[0022] Figure 5 is a schematic diagram of the working principle of the decompression pump in the embodiment of the present invention (reset stage);

[0023] Reference numerals: 1, diaphragm body; 2, first limit block; 3, check valve diaphragm; 4, diaphragm connection part; 5, liquid guide hose; 6, sleeve; 7, extrusion chamber; 8, second limit block; 9, check valve flap; 10, medium hose; 11, control pump; 20, heart; 21, aorta; 22, buffer zone. Detailed implementation manners

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] Such as Figure 1 、 Figure 2As shown in the figure, an embodiment of the present invention provides an intra-aortic decompression pump, which includes a diaphragm assembly that enables unidirectional liquid flow and a decompression pump that enables unidirectional liquid flow. The decompression pump is connected to the diaphragm assembly, and the flow direction of the decompression pump is the same as that of the diaphragm assembly. The diaphragm assembly includes a diaphragm body 1 for clamping the inner side of the aorta. The diaphragm body 1 is a circular plate-like structure. In the direction along the axis of the diaphragm body 1, the outer contour dimension of the decompression pump is smaller than the outer diameter dimension of the diaphragm body 1. The input end and the output end of the decompression pump are respectively located on both sides of the plate surface of the diaphragm body 1.

[0026] As described above, when heart failure occurs, the heart's blood pumping function declines. Therefore, if the pressure in the aorta 21 can be reduced, the resistance of the left ventricle to eject blood during systole can be reduced. At the same time, for patients with insufficient aortic valve closure, during diastole, the blood pressure in the aorta 21 may be higher than the blood pressure in the left ventricle, resulting in blood reflux. If the pressure in the aorta 21 is reduced, the reflux problem caused by insufficient aortic valve closure can also be solved. For this reason, in this application, it is proposed to implant a decompression pump that can unidirectionally transfer blood in the aorta to transfer the blood near the aortic valve to the periphery, thereby reducing the pressure in the aorta 21 near the aortic valve. However, due to the limited volume of the decompression pump (the outer diameter is much smaller than the inner diameter of the aorta 21 blood vessel to avoid affecting the normal blood supply during heart ejection), the flow rate of the decompression pump is small, and it is difficult to directly reduce the pressure in the aorta 21. Therefore, in this application, an additional diaphragm assembly is also provided, and the diaphragm assembly is horizontally placed in the aorta 21, thereby forming a buffer zone 22 in the aorta 21 downstream of the aortic valve as shown in Figure 3 the figure. During systole, the blood ejected by the heart 20 surges into the buffer zone 22 through the aortic valve, and then passes through the diaphragm assembly (the opening direction of the one-way diaphragm 3 on the diaphragm assembly is the same as that of the aortic valve, so the blood flushes open the one-way diaphragm 3 and makes it rotate to the Figure 3 dashed line position in the figure and does not block the normal blood flow) to complete normal blood supply. During diastole, the blood pressure in the heart 20 decreases and the aortic valve closes. At this time, a relatively closed space is formed in the buffer zone 22. The volume of this space is small. Therefore, when the decompression pump extracts a small amount of blood from the buffer zone 22, the pressure in the buffer zone 22 can be effectively reduced (when the pressure in the buffer zone 22 decreases, under the action of the reverse blood pressure and the resilience force of the one-way diaphragm 3 itself, the one-way diaphragm 3 resets to the initial closed state flush with the diaphragm body 1, thereby ensuring the pressure in the aorta 21 downstream of the one-way diaphragm 3 in the buffer zone 22). Furthermore, the resistance of the left ventricle to eject blood during the next heart systole is reduced, the pressure difference between the buffer zone 22 and the left ventricle can be reduced, blood reflux through the aortic valve is avoided, and the load on the heart 20 is reduced.

[0027] Meanwhile, in this application, since the decompression pump extracts blood pressure by compressing the inner tube with its outer tube (see the following description for details), rather than working by squeezing the inner wall of the blood vessel (blocking the entire blood vessel during operation) like the existing IABP device, the outer contour size of the decompression pump can be made very small, with a negligible impact on the normal blood flow. Moreover, it is not necessary to distinguish between the diastolic and systolic phases, and continuous operation will not cause adverse effects to the patient. This solves the problems existing in the IABP device. At the same time, it is not necessary to be implanted inside the heart like a left ventricular assist device. Therefore, this technical solution preferably solves the problems existing in the prior art.

[0028] Furthermore, in order to cooperate well with the inner wall of the aorta, the size of the diaphragm body 1 can be customized according to the actual needs of different patients, or a series of specifications can be formed for selection. According to statistics, the outer diameter of the diaphragm body 1 can be controlled within 3 mm - 80 mm.

[0029] Furthermore, the specific structure of the diaphragm assembly is as Figure 1 、 Figure 2 shown. In addition to the diaphragm body 1, the diaphragm assembly further includes a check valve diaphragm 3 and one or more first limit blocks 2 fixedly connected to the diaphragm body 1. A flow hole matching the check valve diaphragm 3 is formed on the diaphragm body 1. One end of the check valve diaphragm 3 far from the decompression pump is connected to the diaphragm body 1, that is, in the initial state, the check valve diaphragm 3 can be sleeved within the flow hole. At the same time, the first limit block 2 is located in the direction opposite to the opening direction of the check valve diaphragm 3, so as to ensure that the check valve diaphragm 3 can only open to one side (see the dotted line shown in Figure 1 ).

[0030] Since the diaphragm body 1, the check valve diaphragm 3, etc. are all made of medical non-metallic materials, these materials have good elasticity and plasticity. Therefore, a small section of the check valve diaphragm 3 in the circumferential direction can be directly connected to the diaphragm body 1 as an integral structure. This structure is simple, and after the check valve diaphragm 3 is opened, a resilience force can be generated due to the deformation of the material itself, which is beneficial to the rapid closing of the check valve diaphragm 3. Additionally, a diaphragm connecting portion 4 can be separately provided between the diaphragm body 1 and the check valve diaphragm 3. The diaphragm connecting portion 4 is a hinge structure in the shape of a hinge, with one side connected to the diaphragm body 1 and the other side connected to the check valve diaphragm 3, so that the diaphragm body 1 and the check valve diaphragm 3 can rotate relative to each other. To achieve rapid closing, an elastic member can also be provided inside the diaphragm connecting portion 4.

[0031] Furthermore, as Figure 1 shown, during design, the relative positional relationship between the diaphragm assembly and the decompression pump should be ensured so that the check valve diaphragm 3 does not touch the decompression pump when it opens, to avoid interference.

[0032] Further, the specific structure of the decompression pump in this application is as follows: The decompression pump includes a liquid guide hose 5, a sleeve 6, and a medium hose 10; both ends of the liquid guide hose 5 respectively form the input end and the output end of the decompression pump; the sleeve 6 is coated on the outer side of the liquid guide hose 5, and both ends of the sleeve 6 are fixedly connected to the outer side wall of the liquid guide hose 5, so as to form a closed annular extrusion cavity 7 between the sleeve 6 and the liquid guide hose 5; the inner end of the medium hose 10 inside the body is communicated with the extrusion cavity 7, and the outer end of the medium hose 10 outside the body is used to connect to a control pump 11; a decompression pump check valve for enabling the liquid to flow unidirectionally is further provided inside the liquid guide hose 5. The working medium of the control pump 11 is liquid or gas.

[0033] In order to implement a decompression pump with a simple and compact structure, in this application, the liquid guide hose 5 is used as the transfer path during blood extraction, and the overall structure of the decompression pump is set as a double-layer structure, that is, a sleeve 6 is further coated on the outer side of the liquid guide hose 5, and the front and rear sections of the sleeve 6 are fixedly connected to the outer side of the liquid guide hose 5, so as to form an extrusion cavity 7 between the liquid guide hose 5 and the sleeve 6. Then, a control pump 11 placed outside the patient outputs a filling medium (such as normal saline). After the filling medium enters the extrusion cavity 7 through the medium hose 10, the extrusion cavity 7 will expand and deform, causing the tube wall of the liquid guide hose 5 to dent and deform. At this time, the blood pressure inside the liquid guide hose 5 increases, and then the blood is extruded outward through the decompression pump check valve at the output end, thereby realizing the unidirectional flow of blood.

[0034] Meanwhile, in this technical solution, when the extrusion cavity 7 is pressurized, it is preferred that the sleeve 6 only deforms and expands inward to squeeze the liquid guide hose 5 and does not deform outward as much as possible. At this time, the working efficiency is higher. For this reason, the design of a non-compliant balloon in the prior art can be referred to. The material of its balloon wall (equivalent to the outer wall of the sleeve 6 in this application) has good compressive resistance, and the outer diameter of the balloon does not increase under increased pressure.

[0035] During use, according to the operation method of existing interventional therapy, the guide wire is connected to the guide wire connection part provided on the diaphragm body 1, and then through the guidance of the guide wire, the entire aortic decompression pump can be introduced into the patient's aorta (refer to Figure 3 ), and through fine adjustment of the guide wire, it is placed at a predetermined distance outside the aortic valve, and its side wall is clamped on the inner wall of the aorta. At the same time, the direction should be ensured to be correct, and the opening direction of the one-way diaphragm 3 faces away from the heart 20. Then, the end of the medium hose 10 remaining outside the body is connected to the control pump 11, and the preparation work is completed.

[0036] The materials of components such as the liquid guide hose 5, the sleeve 6, and the medium hose 10 are the same as those of the diaphragm body 1 and the one-way diaphragm 3, and are also made of medical materials. For example, a non-metallic flexible material used in existing interventional catheters can be adopted.

[0037] Further, the structure of the decompression pump check valve is as Figure 1 shown. It is composed of a check valve flap 9 and a second limit block 8. The check valve flap 9 is a circular diaphragm arranged in the liquid guide hose 5. A small section of its circumference is fixedly connected to the inner wall of the liquid guide hose 5, and the connection part between the two is also elastic, so that the free end of the check valve flap 9 (the part not connected to the inner wall of the liquid guide hose 5) can swing left and right under the push of the liquid. At the same time, on the opposite side of the connection part, a second limit block 8 protruding inward from the inner wall of the liquid guide hose 5 is fixedly arranged on the inner wall of the liquid guide hose 5 to block the check valve flap 9 from swinging toward the side where the second limit block 8 is located, forming a one-way blocking effect.

[0038] Further, there are two decompression pump check valves in total. The two decompression pump check valves are respectively arranged at both ends of the liquid guide hose 5, and the opening directions of the two decompression pump check valves are the same.

[0039] Further, in some special cases, if the aortic decompression pump of the present application is not easy to place, an improved method can be adopted. A circle of adjustment balloons is arranged on the outer edge of the diaphragm body 1, and the adjustment balloons are connected to an adjustment balloon control pump located outside the body through another hose. During operation, first, under the guidance of a guide wire, the whole device is placed at a predetermined position. Then, by operating the adjustment balloon control pump to output the medium, the adjustment balloons are filled and inflated. At this time, the outer size of the diaphragm assembly increases and presses against the inner wall of the aorta 21, so that the diaphragm assembly is reliably fixed. After the treatment is completed, the medium can be refluxed by reversely adjusting the balloon control pump, and the adjustment balloons contract, so that the outer contour size of the diaphragm assembly decreases. At this time, the aortic decompression pump can be easily taken out under the guidance of the guide wire. The working principle of the adjustment balloon is the same as that of the existing balloon, so it is not shown in the figure again.

[0040] The operation process of the aortic decompression pump in the embodiment of the present invention is as follows:

[0041] Step 1: Under the guidance of a guide wire, place the aortic decompression pump into the aorta 21 and adjust it to a predetermined distance outside the aortic valve, so that its side wall is clamped on the inner wall of the aorta 21, forming a buffer zone 22 outside the aortic valve;

[0042] Step 2: Connect the outer end of the medium hose 10 to the control pump 11;

[0043] Step 3: Start the control pump 11, so that part of the blood in the buffer zone 22 is discharged through the decompression pump, thereby reducing the pressure in the buffer zone 22 and reducing or eliminating blood reflux;

[0044] The working process of the decompression pump can be divided into two different states:

[0045] 1) Extrusion stage: The control pump 11 is made to output a filling medium. The filling medium enters the extrusion chamber 7 inside the sleeve 6 through the medium hose 10, thereby filling and bulging the extrusion chamber 7, forming the Figure 4 state shown. At this time, the liquid guide hose 5 is deformed under pressure, so that the blood in the liquid guide hose 5 pushes open the one-way valve flap 9 at the output end and is extruded (see the hollow arrow in the figure). At the same time, since the internal pressure of the liquid guide hose 5 increases during extrusion deformation, the decompression pump one-way valve ( Figure 4 the left decompression pump one-way valve in it) at the input end is closed under pressure, thus preventing the blood in the liquid guide hose 5 from flowing back to the buffer area 22;

[0046] 2) Reset stage: The control pump 11 is made to act in the reverse direction, so that the filling medium in the extrusion chamber 7 flows back to the control pump 11 through the medium hose 10, causing the extrusion chamber 7 to reset. At this time, due to a certain negative pressure generated when the extrusion chamber 7 resets, and the self-elastic restoring force of the wall of the liquid guide hose 5, the liquid guide hose 5 will return to the shape of a cylindrical tube, and then a certain degree of negative pressure is also generated inside the liquid guide hose 5. At this time, as Figure 5 shown, the pressure at the output end is greater than the pressure inside the liquid guide hose 5, causing the one-way valve flap 9 at the output end to be pushed back and lean against the corresponding second limit block 8, and the decompression pump one-way valve is closed; at the same time, the blood pressure in the buffer area 22 is higher than the pressure inside the liquid guide hose 5. Therefore, the one-way valve flap 9 at the input end ( Figure 5 the left side in it) is pushed open, and the blood in the buffer area 22 flows into the liquid guide hose 5;

[0047] Repeating the switching of the above two states forms an intermittent one-way flow, thereby achieving the purpose of decompressing the buffer area 22;

[0048] Step 4: After the treatment is completed, the aortic decompression pump is removed under the guidance of a guide wire.

[0049] Among them, the control pump 11 can be a manual pump (such as a piston-type manual pump used in the medical industry to control inflatable and deflatable balloons), or an automatic pump. The automatic control pump 11 is made to perform the above actions through a preset program, thereby further improving the working efficiency.

[0050] In the above detailed description, various features are combined in a single embodiment to simplify the present disclosure. This method of disclosure should not be construed as reflecting the intention that the embodiments of the claimed subject matter require more features than those clearly stated in each claim. On the contrary, as reflected in the appended claims, the present invention is in a state with fewer features than all the features of the disclosed single embodiment. Therefore, the appended claims are hereby clearly incorporated into the detailed description, where each claim alone serves as a separate preferred embodiment of the present invention.

[0051] The above-described disclosed embodiments are described so that any person skilled in the art can implement or use the present invention. For those skilled in the art, various modification methods of these embodiments are obvious, and the general principles defined herein can also be applied to other embodiments without departing from the spirit and protection scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in this application.

[0052] The specific embodiments described above further elaborate on the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above is only the specific embodiment of the present invention and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intra-aortic decompression pump, characterized in that: The invention comprises a diaphragm assembly capable of enabling unidirectional flow of liquid, and a pressure reducing pump capable of enabling unidirectional flow of liquid, wherein the pressure reducing pump is connected to the diaphragm assembly, and the flow direction of the pressure reducing pump is the same as the flow direction of the diaphragm assembly; the diaphragm assembly comprises a diaphragm body (1) for clamping the inner side of the aorta, and the diaphragm body (1) is a circular plate-like structure; in the direction along the axis of the diaphragm body (1), the outer profile of the pressure reducing pump is smaller than the outer diameter of the diaphragm body (1); the input end and the output end of the pressure reducing pump are respectively located on both sides of the plate surface of the diaphragm body (1).

2. The intra-aortic decompression pump according to claim 1, characterized in that: The outer diameter of the diaphragm body (1) is 3 mm to 80 mm.

3. The intra-aortic decompression pump according to claim 1, characterized in that: The diaphragm assembly further comprises a one-way diaphragm (3) and a first limit block (2) fixedly connected to the diaphragm body (1); the diaphragm body (1) is provided with a flow hole matching the one-way diaphragm (3), and the end of the one-way diaphragm (3) away from the pressure reducing pump is connected to the diaphragm body (1); the first limit block (2) is located on the side opposite to the opening direction of the one-way diaphragm (3).

4. The intra-aortic decompression pump according to claim 3, characterized in that: The pressure reducing pump is located outside the running track of the one-way diaphragm (3) when it is opened.

5. The intra-aortic decompression pump according to claim 1, characterized in that: The pressure reducing pump comprises a liquid guiding hose (5), a sleeve (6), and a medium hose (10); the two ends of the liquid guiding hose (5) respectively constitute the input end and the output end of the pressure reducing pump; the sleeve (6) is covered on the outside of the liquid guiding hose (5), and the two ends of the sleeve (6) are fixedly connected to the outer wall of the liquid guiding hose (5), so that a closed annular extrusion chamber (7) is formed between the sleeve (6) and the liquid guiding hose (5); the inner end of the medium hose (10) is connected to the extrusion chamber (7), and the outer end of the medium hose (10) is used to connect to a control pump (11); the liquid guiding hose (5) is also provided with a pressure reducing pump check valve for allowing liquid to flow in one direction.

6. The intra-aortic pressure reduction pump according to claim 5, characterized in that: The working medium of the control pump (11) is liquid or gas.

7. The intra-aortic pressure reduction pump according to claim 6, characterized in that: The one-way valve of the pressure reducing pump comprises a one-way valve flap (9) and a second limit block (8); the one-way valve flap (9) is a circular diaphragm structure matching the inner diameter of the liquid guiding hose (5), and one end of the one-way valve flap (9) is fixedly connected to the inner wall of the liquid guiding hose (5); the size of the second limit block (8) is smaller than the inner diameter of the liquid guiding hose (5), and the second limit block (8) is located on the side opposite to the opening direction of the one-way valve flap (9).

8. The intra-aortic decompression pump according to claim 7, characterized in that: There are two one-way valves for the pressure reducing pump, which are respectively arranged at two ends of the liquid guiding hose (5), and the opening directions of the two one-way valves for the pressure reducing pump are consistent.

9. The intra-aortic pressure reduction pump according to claim 1, characterized in that: The diaphragm body (1) is also provided with a guide wire connecting portion for connecting a guide wire.

10. The intra-aortic pressure reduction pump according to claim 1, characterized in that: The outer edge of the diaphragm body (1) is also provided with an annular adjustment balloon, and the adjustment balloon is connected to an adjustment balloon control pump via a hose.

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