Aortic circulatory pump and blood pump system

Abstract

The application discloses an aortic circulation pump and a blood pump system. The aortic circulation pump comprises a power transmission part, which is used for being connected with a driving part to transmit power; a rotating part, which is sleeved on the power transmission part to rotate with the power transmission part; a mesh tube, which is sleeved on the outside of the rotating part to protect the rotating part; a supporting mesh tube, which is sleeved on the power transmission part in an openable manner to support the aorta in an open state; and a flow guide pipe, which is sleeved on the outside of the mesh tube and has a blood inlet and a blood outlet. The power transmission part can drive the rotating part to rotate to drive the blood in the aorta to flow into the flow guide pipe from the blood inlet of the flow guide pipe and flow out of the flow guide pipe from the blood outlet. The aortic circulation pump can accelerate the circulation of the blood in the aorta, thereby assisting in improving the blood supply function of the heart. The mesh tube and the flow guide pipe improve the safety in use and the blood flow speed.

Description

TECHNICAL FIELD

[0001] The present application relates to an aortic circulation pump and also relates to a blood pump system comprising the aortic circulation pump, and belongs to the technical field of medical devices. BACKGROUND

[0002] Cardiac dysfunction is a broader concept in theory, and cardiac dysfunction with clinical symptoms is called heart failure (heart failure for short). Heart failure is a group of syndromes caused by various structural or functional diseases of the heart, resulting in impaired ventricular filling and / or ejection function, and the heart output cannot meet the metabolic needs of the body tissues, with pulmonary and / or systemic congestion, and insufficient blood perfusion of organs and tissues. The main manifestations are dyspnea, limited physical activity and fluid retention. According to the urgency of heart failure, it can be divided into acute heart failure and chronic heart failure. According to the site of heart failure, it can be divided into left heart failure, right heart failure and whole heart failure. There are also systolic or diastolic heart failure.

[0003] According to the functional classification formulated by the New York Heart Association, the condition of heart patients can be divided into four levels. For patients in the third and fourth levels, left ventricular ejection fraction is less than 35%, and QRS complex is higher than 120 milliseconds, cardiac resynchronization therapy can be performed, artificial pacemaker or heart surgery is implanted. These treatment methods can improve symptoms and improve the life level of patients, and some surveys have proved that they can reduce mortality. Patients in the second, third and fourth levels and with ventricular ejection fraction less than 35% can also benefit from implantable cardioverter-defibrillators. This instrument has been proved to reduce mortality by about 23%.

[0004] In addition, another treatment method is to use a heart assist device, which is a battery-driven mechanical pump device, which is surgically implanted in the upper abdomen to pump blood from the ventricle into the aorta. Heart assist devices are increasingly used, usually for patients who are still waiting for heart transplants, but the current heart assist devices have the problems of being too large in size and complex in surgical implantation. SUMMARY

[0005] The primary technical problem to be solved by the present application is to provide an aortic circulation pump.

[0006] Another technical problem to be solved by the present application is to provide a blood pump system.

[0007] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0008] According to a first aspect of the embodiments of the present application, an aortic circulation pump is provided, which is arranged in an aorta to supply blood in the aorta to a target organ, comprising:

[0009] a power transmission part for connecting with the driving part to transmit power;

[0010] a rotating member sleeved on the power transmission part to rotate with the power transmission part;

[0011] a mesh sleeve sleeved on the outside of the rotating member to protect the rotating member;

[0012] a support mesh sleeve sleeved on the power transmission part to support the aorta in an open state;

[0013] a flow guide pipe sleeved on the outside of the mesh and having a blood inlet and a blood outlet;

[0014] the power transmission part drives the rotating member to rotate to drive the blood in the aorta to enter the flow guide pipe from the blood inlet of the flow guide pipe and flow out of the flow guide pipe from the blood outlet.

[0015] Preferably, the rotating member comprises:

[0016] a rotating body sleeved on the power transmission part to rotate with the power transmission part;

[0017] a rotating blade arranged on the outside of the rotating body to adjust the opening angle of the rotating blade relative to the rotating body.

[0018] Preferably, a plurality of rotating shaft grooves are formed on the outside of the rotating body, and the rotating blade is arranged in the rotating shaft grooves after heat treatment to adjust the opening angle of the rotating blade relative to the rotating body.

[0019] Preferably, the mesh is woven by a plurality of first metal wires, and the middle section of each first metal wire is bent into a trapezoidal shape, so that the two ends of the plurality of first metal wires are sleeved on the power transmission part, and the middle region of the plurality of first metal wires forms a cylindrical cavity for accommodating the rotating member.

[0020] Preferably, the support mesh is woven by a plurality of second metal wires, and the first end of each second metal wire is close to the power transmission part, and the second end is away from the power transmission part; so that the first ends of the plurality of second metal wires are sleeved on the power transmission part, and the second ends of the plurality of second metal wires are scattered in a petal shape.

[0021] More preferably, the flow guide tube comprises a first accelerating section and a second accelerating section, which are arranged in series along the length direction of the flow guide tube, for increasing the flow speed of blood in the flow guide tube.

[0022] More preferably, the first accelerating section comprises a first arc-shaped tube and a second arc-shaped tube, which are both curved towards the axis of the flow guide tube; the first arc-shaped tube has a gradually decreasing diameter, and the second arc-shaped tube has a gradually increasing diameter; the bending radius of the first arc-shaped tube has a first set ratio with the bending radius of the second arc-shaped tube.

[0023] More preferably, the second accelerating section comprises a third arc-shaped tube and a fourth arc-shaped tube, which are both curved towards the axis of the flow guide tube; the third arc-shaped tube has a gradually decreasing diameter, and the fourth arc-shaped tube has a gradually increasing diameter; the bending radius of the third arc-shaped tube has a second set ratio with the bending radius of the fourth arc-shaped tube.

[0024] More preferably, the power transmission part comprises at least an aorta transmission section and a power cable.

[0025] The aorta transmission section is arranged in the rotating member and is fixed relative to the rotating member.

[0026] The power cable is arranged in the aorta transmission section and is detachably connected to the aorta transmission section, for driving the rotating member to rotate in the connected state.

[0027] According to the second aspect of the embodiments of the present application, a blood pump system is provided, which comprises the aorta circulation pump.

[0028] Compared with the prior art, the present application has the following technical features:

[0029] 1. The blood in the aorta is accelerated by the aorta circulation pump, so as to assist in improving the blood supply function of the heart.

[0030] 2. The rotating blade of the aorta circulation pump is adjustable, and in use, the circulation device can be placed in the body through a simple interventional surgery in a fully housed form (at this time, the size is smaller), and then opened to a half-open form or a fully open form in the body to improve the blood flow and improve the convenience of use.

[0031] 3. The rotating member is protected by the first metal wire woven net tube, which improves the safety of use; and the aorta is supported by the second metal wire woven support net tube, which ensures the smoothness of blood flow.

[0032] 4. By setting the flow guide pipe, the blood can be accelerated twice to increase the blood flow speed, thereby assisting to improve the heart blood supply function. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 Fig. 1 is a schematic diagram of an actual application scene of an aortic circulation pump in an embodiment of the present application;

[0034] Fig. 2(a) is a schematic diagram of the overall structure of an aortic circulation pump provided in an embodiment of the present application;

[0035] Fig. 2(b) is a schematic diagram of the exploded structure of an aortic circulation pump provided in an embodiment of the present application;

[0036] Figure 3 Fig. 3 is a schematic diagram of the structure of a rotating member in Fig. 2(a);

[0037] Figure 4 Fig. 4 is a schematic diagram of the structure of rotating blades of the rotating member at different opening angles;

[0038] Figure 5 Fig. 5 is a schematic diagram of the structure of the aortic circulation pump at different forms;

[0039] Figure 6 Fig. 6 is a schematic diagram of the combined structure of a mesh tube and a support mesh tube;

[0040] Figure 7 Fig. 7 is a schematic diagram of the structure of a flow guide pipe;

[0041] Figure 8 Fig. 8 is a schematic diagram of the exploded structure of a power transmission part;

[0042] Figure 9 Fig. 9 is a schematic diagram of the exploded structure of another power transmission part. DETAILED DESCRIPTION

[0043] The technical content of the present application will be described in detail below in combination with the drawings and specific embodiments.

[0044] The heart circulation pump provided in the embodiment of the present application is used to be arranged in the heart (for example, as shown in the embodiment, arranged in the descending aorta) to supply the blood in the aorta to the set organs. Figure 1

[0045] ​As shown in FIG. 2(a) and FIG. 2(b), in the embodiment of the present application, the aortic circulation pump comprises a rotating part 1, a mesh tube 2, a supporting mesh tube 3, a flow guide tube 4 and a power transmission part 5. The power transmission part 5 is used to be connected with a driving part (for example, a rotating motor), so as to be driven to rotate by the driving part. The rotating part 1 is sleeved on the power transmission part 5, so as to rotate with the power transmission part 5. The mesh tube 2 is sleeved outside the rotating part 1, so as to protect the rotating part 1, thereby improving the safety of the aortic circulation pump. The supporting mesh tube 3 is sleeved on the power transmission part 5 in an openable manner, so as to support the aorta in the open state. The flow guide tube 4 is sleeved outside the mesh tube 2, so as to guide the blood flow (specifically, guide the blood from the aorta to the designated organs).

[0046] As shown in FIG. 2(a) and FIG. 2(b), in the embodiment of the present application, the aortic circulation pump comprises a rotating part 1, a mesh tube 2, a supporting mesh tube 3, a flow guide tube 4 and a power transmission part 5. The power transmission part 5 is used to be connected with a driving part (for example, a rotating motor), so as to be driven to rotate by the driving part. The rotating part 1 is sleeved on the power transmission part 5, so as to rotate with the power transmission part 5. The mesh tube 2 is sleeved outside the rotating part 1, so as to protect the rotating part 1, thereby improving the safety of the aortic circulation pump. The supporting mesh tube 3 is sleeved on the power transmission part 5 in an openable manner, so as to support the aorta in the open state. The flow guide tube 4 is sleeved outside the mesh tube 2, so as to guide the blood flow (specifically, guide the blood from the aorta to the designated organs). Figure 3 As shown in FIG. 2(a) and FIG. 2(b), in the embodiment of the present application, the aortic circulation pump comprises a rotating part 1, a mesh tube 2, a supporting mesh tube 3, a flow guide tube 4 and a power transmission part 5. The power transmission part 5 is used to be connected with a driving part (for example, a rotating motor), so as to be driven to rotate by the driving part. The rotating part 1 is sleeved on the power transmission part 5, so as to rotate with the power transmission part 5. The mesh tube 2 is sleeved outside the rotating part 1, so as to protect the rotating part 1, thereby improving the safety of the aortic circulation pump. The supporting mesh tube 3 is sleeved on the power transmission part 5 in an openable manner, so as to support the aorta in the open state. The flow guide tube 4 is sleeved outside the mesh tube 2, so as to guide the blood flow (specifically, guide the blood from the aorta to the designated organs). Figure 4 As shown in FIG. 2(a) and FIG. 2(b), in the embodiment of the present application, the aortic circulation pump comprises a rotating part 1, a mesh tube 2, a supporting mesh tube 3, a flow guide tube 4 and a power transmission part 5. The power transmission part 5 is used to be connected with a driving part (for example, a rotating motor), so as to be driven to rotate by the driving part. The rotating part 1 is sleeved on the power transmission part 5, so as to rotate with the power transmission part 5. The mesh tube 2 is sleeved outside the rotating part 1, so as to protect the rotating part 1, thereby improving the safety of the aortic circulation pump. The supporting mesh tube 3 is sleeved on the power transmission part 5 in an openable manner, so as to support the aorta in the open state. The flow guide tube 4 is sleeved outside the mesh tube 2, so as to guide the blood flow (specifically, guide the blood from the aorta to the designated organs). Figure 5 As shown in FIG. 2(a) and FIG. 2(b), in the embodiment of the present application, the aortic circulation pump comprises a rotating part 1, a mesh tube 2, a supporting mesh tube 3, a flow guide tube 4 and a power transmission part 5. The power transmission part 5 is used to be connected with a driving part (for example, a rotating motor), so as to be driven to rotate by the driving part. The rotating part 1 is sleeved on the power transmission part 5, so as to rotate with the power transmission part 5. The mesh tube 2 is sleeved outside the rotating part 1, so as to protect the rotating part 1, thereby improving the safety of the aortic circulation pump. The supporting mesh tube 3 is sleeved on the power transmission part 5 in an openable manner, so as to support the aorta in the open state. The flow guide tube 4 is sleeved outside the mesh tube 2, so as to guide the blood flow (specifically, guide the blood from the aorta to the designated organs).

[0047] In addition, in an embodiment of the present application, two groups of rotating shaft grooves are symmetrically formed on the outer side of the rotating body 11 along the axial direction of the rotating body 11, each group of rotating shaft grooves has three rotating shaft grooves, and the included angle between two adjacent rotating shaft grooves 111 is 120°. Correspondingly, a group of rotating blades is installed on each group of rotating shaft grooves, so that the outer side of the rotating body 11 has two groups of rotating blades, i.e. six rotating blades in total, thereby improving the rotating suction force of the rotating part 1.

[0048] The mesh tube 2 is sleeved outside the rotating part 1, so as to protect the rotating part 1, thereby improving the safety of the aortic circulation pump. Specifically, as shown in FIG. 2(a) and FIG. 2(b), the mesh tube 2 is sleeved outside the rotating part 1, so as to protect the rotating part 1, thereby improving the safety of the aortic circulation pump. Figure 6As shown, in one embodiment of the present application, the net tube 2 is woven by a plurality of first metal wires 21, wherein the first metal wires can be selected from common metals or alloys, and after weaving, the middle sections of each first metal wire are bent into a trapezoidal shape, so that the two ends of the plurality of first metal wires are sleeved on the power transmission part 5. The middle region of the plurality of first metal wires forms a cylindrical cavity for accommodating and protecting the rotating part 1.

[0049] Continuing to refer to Figure 6 As shown, the support net tube 3 is sleeved on the power transmission part 5 in an expandable manner to support the aorta in an expanded state. Specifically, the support net tube 3 is woven by a plurality of second metal wires 31, and different from the net tube 2, the first end of each second metal wire 31 is close to the power transmission part 5, and the second end is away from the power transmission part 5, so that the first ends of the plurality of second metal wires 31 are collectively sleeved on the power transmission part 5, and the second ends of the plurality of second metal wires 31 are scattered in a petal shape. It should be noted that in one embodiment of the present application, the second ends of the plurality of second metal wires 31 have a certain elasticity, so that the second ends of the support net tube 3 can be contracted or expanded. When it is necessary to enter the aorta, the second ends of the support net tube 3 can be contracted to avoid interference, and when the aorta reaches the preset position, the second ends of the support net tube 3 can be expanded, thereby supporting the blood vessel wall of the aorta and facilitating smooth blood flow.

[0050] In addition, it can be understood that in one embodiment of the present application, the net tube 2 and the support net tube 3 can be made into an integrated structure, and in another embodiment, the net tube 2 and the support net tube 3 can also be made into a split structure, which can be adaptively selected according to actual needs. In yet another embodiment, the net tube 2 is carved from a metal pipe, so that the two ends of the net tube 2 are sleeved on the power transmission part, and the middle region of the net tube 2 forms a cylindrical cavity for accommodating the rotating part. Moreover, the support net tube 3 is carved from a metal pipe, so that the first end of the support net tube 3 is sleeved on the power transmission part, and the second end of the support net tube 3 is scattered in a petal shape.

[0051] The flow guide pipe 4 is sleeved on the outside of the net tube 2 and has a blood inlet 41 and a blood outlet 42, wherein the blood inlet 41 is close to the aorta, and the blood outlet 42 is close to the designated organ, so as to guide the blood in the aorta to enter the flow guide pipe 4 from the blood inlet 41 and flow to the designated organ from the blood outlet 42. Specifically, as shown in the figure, Figure 7As shown, in one embodiment of the present invention, the flow guide tube 4 has a first acceleration section 43 and a second acceleration section 44. The first acceleration section 43 is a Coanda effect tube, which specifically includes a first arc-shaped tube 431 and a second arc-shaped tube 432 with gradually changing diameters. Both the first arc-shaped tube 431 and the second arc-shaped tube 432 are bent towards the axis of the flow guide tube 4. The diameter of the first arc-shaped tube 431 gradually decreases, and the diameter of the second arc-shaped tube 432 gradually increases. At the same time, the bending radius of the first arc-shaped tube 431 and the bending radius of the second arc-shaped tube 432 have a first predetermined ratio, thereby forming a Coanda effect region at the connection between the first arc-shaped tube 431 and the second arc-shaped tube 432 to accelerate the blood for the first time.

[0052] Furthermore, in one embodiment of the present invention, the second acceleration section 44 is a Venturi sonic nozzle structure. Specifically, the second acceleration section 44 includes a third arc-shaped tube 441 and a fourth arc-shaped tube 442. Similarly, both the third arc-shaped tube 441 and the fourth arc-shaped tube 442 are bent towards the axis of the guide tube 4. The diameter of the third arc-shaped tube 441 decreases from large to small, while the diameter of the fourth arc-shaped tube 442 increases from small to large. At the same time, the bending radius of the third arc-shaped tube 441 and the bending radius of the fourth arc-shaped tube 442 have a second predetermined ratio, thereby forming a Venturi sonic nozzle action area at the connection between the third arc-shaped tube 441 and the fourth arc-shaped tube 442 to accelerate the blood a second time. Thus, the guide tube 4 can be used to double-accelerate the blood to increase the blood flow velocity, thereby assisting in improving the heart's blood supply function.

[0053] like Figure 8 As shown, in one embodiment of the present invention, the power transmission unit 5 includes an aortic transmission section 51 and a power cable 52. Specifically, the aortic transmission section 51 passes through the rotating member 1 and is fixed relative to the rotating member; the power cable 52 passes through the aortic transmission section 51 and is detachably connected to the aortic transmission section 51 for driving the rotating member 1 to rotate in the connected state. It is understood that the power transmission unit 5 can also add other transmission sections as needed, for example: Figure 9 As shown, in another embodiment, the power transmission unit 5 further includes a cardiac transmission section 53. The aortic transmission section 51 can be connected independently to the power cable 52, allowing the aortic circulation pump to be placed inside the aorta and operate independently. The cardiac transmission section 53 can also be connected independently to the power cable 52, allowing the cardiac circulation pump (the specific structure can be selected as needed) to be placed inside the heart and operate independently. Furthermore, the aortic transmission section 51 can be connected to the power cable 52, and then the cardiac transmission section 53 can be connected to the power cable 52, allowing the cardiac circulation pump to be placed inside the heart and the aortic circulation pump to be placed inside the aorta, enabling both pumps to operate simultaneously. This allows the cardiac circulation pump and the aortic circulation pump to accelerate the circulation of blood in the heart and aorta, respectively, thereby assisting in improving the heart's blood supply function.

[0054] On the basis of the above-mentioned embodiments, the embodiments of the present application further provide a blood pump system comprising the above-mentioned heart circulation pump.

[0055] The above-mentioned aortic circulation pump and blood pump system provided by the present application are described in detail. Any obvious modification made by the person skilled in the art without departing from the essential content of the present application shall constitute an infringement of the patent right of the present application and shall bear the corresponding legal responsibility.

Claims

1. An aortic circulation pump disposed within an aorta to supply blood within the aorta to a designated organ, characterized by The aortic circulation pump comprises: a power transmission part connected with the driving part to transmit power; a rotating part sleeved on the power transmission part to rotate with the power transmission part; a mesh sleeve sleeved on the outside of the rotating part to protect the rotating part; a support mesh sleeve sleeved on the power transmission part to support the aorta in an open state; a flow guide pipe sleeved on the outside of the mesh and having a blood inlet and a blood outlet; the flow guide pipe comprises a first accelerating section and a second accelerating section, the first accelerating section and the second accelerating section are arranged at intervals along the length direction of the flow guide pipe, the first accelerating section is a Coanda effect area, and the second accelerating section is a Venturi sonic nozzle area; the first accelerating section comprises a first arc-shaped pipe and a second arc-shaped pipe with gradually changing diameters, the first arc-shaped pipe and the second arc-shaped pipe are both curved towards the axis of the flow guide pipe, the diameter of the first arc-shaped pipe gradually decreases, the diameter of the second arc-shaped pipe gradually increases, and the bending radius of the first arc-shaped pipe has a first set ratio with the bending radius of the second arc-shaped pipe; the second accelerating section comprises a third arc-shaped pipe and a fourth arc-shaped pipe with gradually changing diameters, the third arc-shaped pipe and the fourth arc-shaped pipe are both curved towards the axis of the flow guide pipe, the diameter of the third arc-shaped pipe gradually decreases, the diameter of the fourth arc-shaped pipe gradually increases, and the bending radius of the third arc-shaped pipe has a second set ratio with the bending radius of the fourth arc-shaped pipe; wherein the power transmission part can drive the rotating part to rotate to drive the blood in the aorta to enter the flow guide pipe from the blood inlet of the flow guide pipe, and the blood is accelerated twice by the first accelerating section and the second accelerating section and then flows out of the flow guide pipe from the blood outlet.

2. The aortic circulatory pump of claim 1, wherein The rotating part comprises: a rotating body sleeved on the power transmission part to rotate with the power transmission part; a rotating blade arranged on the outside of the rotating body to adjust the opening angle of the rotating blade relative to the rotating body.

3. The aortic circulation pump of claim 2, wherein: the rotating body is provided with a plurality of rotating shaft grooves on the outside, and the rotating blade is arranged in the rotating shaft grooves after heat treatment to adjust the opening angle of the rotating blade relative to the rotating body.

4. The aortic circulation pump of claim 1, wherein: the mesh is woven by a plurality of first metal wires, the middle sections of the first metal wires are all bent into trapezoidal shapes to make both ends of the plurality of first metal wires sleeved on the power transmission part, and the middle regions of the plurality of first metal wires form a cylindrical cavity for accommodating the rotating part.

5. The aortic circulation pump of claim 1, wherein: The support net tube is woven by a plurality of second metal wires, a first end of each of the second metal wires is close to the power transmission part, and a second end of each of the second metal wires is away from the power transmission part; the first ends of the plurality of second metal wires are collectively sleeved on the power transmission part; and the second ends of the plurality of second metal wires are scattered in petal shape.

6. A blood pump system characterized by An aortic circulation pump comprising a pump according to any one of claims 1 to 5.

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