CN116159237A

CN116159237A - Aortic blood pumping device fixing system

Info

Publication number: CN116159237A
Application number: CN202111417814.1A
Authority: CN
Inventors: 李金山; 李维嘉; 宋岩; 马帅; 高伯达
Original assignee: Beijing Xinjian Technology Co ltd
Current assignee: Beijing Xinjian Technology Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2023-05-26

Abstract

The invention provides an aortic blood pumping device fixing system, and relates to the technical field of medical equipment. The fixation system includes: a pump vessel, an aortic fixation assembly, a valve fixation assembly, and a head end fixation assembly; the head end of the pump blood vessel is inserted from the femoral artery, passes through the aorta and enters the left ventricle; the pump vessel is provided with an inlet and an outlet; the inlet is arranged in the left ventricle, and the outlet is arranged in the aorta; the aorta fixing component is used for fixing a pump blood vessel positioned in an aorta; the valve fixing component is used for fixing a pump blood vessel at the aortic valve; the head end fixing component supports and fixes a pump blood vessel positioned in the left ventricle; can effectively prevent the displacement of the blood pumping device in the patient body and avoid the collision of the blood pumping device and tissues in the heart.

Description

Aortic blood pumping device fixing system

Technical Field

The invention relates to the technical field of medical equipment, in particular to an aortic blood pumping device fixing system.

Background

The heart is an important organ that provides the motive force for the blood circulation of the human body. It is divided into left and right parts, each part comprising a ventricle and an atrium. The left ventricle and the right ventricle are blocked by the ventricular septum, and the left atrium and the right atrium are blocked by the atrial septum. The direction of blood flow between the left atrium and the left ventricle is regulated by the mitral valve, and a sound mitral valve ensures that oxygen-enriched blood flows from the left atrium to the left ventricle, from where it is pumped into the main artery. The blood flow direction between the right atrium and the right ventricle is regulated by the tricuspid valve, which ensures that venous blood rich in carbon dioxide flows from the right atrium to the right ventricle and then from the right ventricle to the pulmonary artery.

High-risk heart surgery patients and heart failure patients, the heart blood pumping capacity is reduced, and the blood supply of the aorta is insufficient, so that the damage to the viscera of the whole body is easily caused. Especially heart failure is a serious life threatening disease for human, about 1/5 of heart disease patients in the world can eventually develop heart failure every year, and the heart failure incidence rate in China reaches 0.9% at present. And mortality rates of over 60% for 5 years. The number of patients with advanced heart failure will be far greater than the number of donors available for heart transplantation over a long period of time, and the blood pumping device not only saves patient life, but also provides tremendous assistance to the patient in finding the appropriate donor, or competing for surgical time.

However, the blood pumping device is impacted by blood flow or swings themselves during operation in the patient, which causes collision between the blood pumping device and the tissue in the heart, resulting in damage to the heart tissue.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the invention provides an aortic blood pumping device fixing system, which solves the problem that the blood pumping device is easy to collide with tissues in the heart in a patient.

(II) technical scheme

In order to achieve the above purpose, the invention is realized by the following technical scheme:

an aortic blood pumping device fixation system, the fixation system comprising: a pump vessel, an aortic fixation assembly, a valve fixation assembly, and a head end fixation assembly;

the head end of the pump blood vessel is inserted from the femoral artery, passes through the aorta and enters the left ventricle;

the pump blood vessel is provided with an inlet and an outlet; the inlet is arranged in the left ventricle, and the outlet is arranged in the aorta;

the aorta fixing component is used for fixing a pump blood vessel positioned in an aorta; the valve fixing component is used for fixing a pump blood vessel at the aortic valve; the head end fixing assembly supports and fixes a pump blood vessel positioned in the left ventricle.

Preferably, the aortic fixation assembly is a first balloon disposed outside the pump vessel, the first balloon being positioned below the outlet, the first balloon dilating to fix the pump vessel to the aortic arch.

Preferably, the valve fixation assembly comprises: the limiting piece, the clamping piece and the first sleeve;

the limiting piece is fixed on the outer wall of the pump blood vessel;

the clamping piece is sleeved outside the pump vessel, the clamping piece is connected with the limiting piece through a spring, and the clamping piece and the limiting piece are attached together under the action of spring force in a stress-free state;

the clamping piece is provided with a lifting piece extending to the outside of the body;

the first sleeve is sleeved on the pump blood vessel, the limiting piece, the clamping piece and the lifting piece.

Preferably, the head end fixing component is a pigtail catheter arranged at the head end of the pump blood vessel, and the head end of the pigtail catheter is in contact with the inner wall of the left ventricle.

Preferably, the aorta fixing component is a reticular bracket arranged outside the pump blood vessel, and the reticular bracket expands to fix the pump blood vessel and the aorta; the mesh stent is capable of filtering thrombus.

Preferably, the valve fixation assembly comprises: a second balloon and a second cannula;

the second balloon is arranged outside the pump blood vessel;

the second sleeve is used for sleeving the pump blood vessel and the second saccule;

the second balloon is matched with the inner wall of the second sleeve in a diastole mode to clamp the aortic valve.

Preferably, the valve fixation assembly comprises: a trapezoidal catheter and a third cannula;

the trapezoid catheter is sleeved outside the pump blood vessel, and the inner wall of the trapezoid catheter is matched with the outer wall of the pump blood vessel to clamp the aortic valve;

and the third sleeve is sleeved on the trapezoid catheter.

Preferably, the head end fixing component is an air bag arranged at the head end of the pump blood vessel, and the air bag is inflated through an air duct arranged in the pump blood vessel, so that the head end of the air bag is in contact with the inner wall of the left ventricle.

Preferably, the head end fixing component is a sucker arranged at the head end of the pump blood vessel, and the sucker provides negative pressure through an air duct arranged in the pump blood vessel, so that the sucker is adsorbed on the inner wall of the left ventricle.

Preferably, the head end fixing component is a net support arranged at the head end of the pump blood vessel, and the net support is relaxed in the left ventricle and is contacted with the inner wall of the left ventricle.

Preferably, the head end fixing assembly includes: a spiral anchor and a guide hook;

the spiral anchor extends into the left ventricle through the pump vessel, the spiral anchor anchoring into the heart wall by rotation;

the guide hooks extend through the pump vessel into the left ventricle for guiding the position and orientation of the spiral anchor.

Preferably, the head end fixing assembly includes: an elastic hook claw;

the elastic claw extends into the left ventricle through the pump blood vessel, and the elastic claw is accommodated in the pump blood vessel and has bending elastic potential energy.

(III) beneficial effects

The invention provides an aortic blood pumping device fixing system. Compared with the prior art, the method has the following beneficial effects:

in the invention, the head end of a pump blood vessel is inserted from a femoral artery and enters the left ventricle after passing through an aorta; the pump vessel is provided with an inlet and an outlet; the inlet is arranged in the left ventricle, and the outlet is arranged in the aorta; the aorta fixing component is used for fixing a pump blood vessel positioned in an aorta; the valve fixing component is used for fixing a pump blood vessel at the aortic valve; the head end fixing component supports and fixes a pump blood vessel positioned in the left ventricle; can effectively prevent the displacement of the blood pumping device in the patient body and avoid the collision of the blood pumping device and tissues in the heart.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram showing the assembly of a fixing system according to embodiment 1 of the present invention;

FIG. 2 is a schematic diagram illustrating the operation of the blood pumping device according to the embodiment 1 of the present invention;

FIG. 3 is a schematic view showing the assembly of the valve fixing assembly of embodiment 1 of the present invention;

FIG. 4 is a schematic view showing the assembly of the aortic fixation assembly in accordance with embodiment 2 of the present invention;

FIG. 5 is a schematic view showing the assembly of a valve fixing assembly according to embodiment 3 of the present invention;

FIG. 6 is a schematic view showing the assembly of a valve-fixing assembly according to embodiment 4 of the present invention;

fig. 7 is an assembled schematic view of a head end fixing assembly according to embodiment 5 of the present invention;

fig. 8 is an assembled schematic view of a head end fixing assembly according to embodiment 6 of the present invention;

fig. 9 is an assembled schematic view of a head end fixing assembly according to embodiment 7 of the present invention;

fig. 10 is an assembled schematic view of a head end fixing assembly according to embodiment 8 of the present invention;

FIG. 11 is a schematic view showing the structure of a screw anchor and a guide hook in embodiment 8 of the present invention;

fig. 12 is an assembled schematic view of a head end fixing assembly according to embodiment 9 of the present invention;

fig. 13 is a schematic structural diagram of a hook in embodiment 9 of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The aortic blood pumping device fixing system solves the problem that the blood pumping device is easy to collide with tissue in the heart in a patient.

The technical scheme in the embodiment of the application aims to solve the technical problems, and the overall thought is as follows:

in the embodiment of the invention, the head end of the pump blood vessel is inserted from the femoral artery, passes through the aorta and enters the left ventricle; the pump vessel is provided with an inlet and an outlet; the inlet is arranged in the left ventricle, and the outlet is arranged in the aorta; the aorta fixing component is used for fixing a pump blood vessel positioned in an aorta; the valve fixing component is used for fixing a pump blood vessel at the aortic valve; the head end fixing component supports and fixes a pump blood vessel positioned in the left ventricle; can effectively prevent the displacement of the blood pumping device in the patient body and avoid the collision of the blood pumping device and tissues in the heart.

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

Example 1:

as shown in fig. 1, the present invention provides an aortic blood pumping apparatus fixing system, which comprises: a pump vessel 10, an aortic fixation assembly, a valve fixation assembly, and a head end fixation assembly;

the head end of the pump blood vessel 10 is inserted from the femoral artery, passes through the aorta and enters the left ventricle;

the pump blood vessel 10 is provided with an inlet 11 and an outlet 12; the inlet 11 is arranged in the left ventricle and the outlet 12 is arranged in the aorta;

the aortic fixation assembly secures the pump vessel 10 located within the aorta; the valve fixation assembly secures the pump vessel 10 at the aortic valve; the head end fixing assembly supports and fixes the pump blood vessel 10 positioned in the left ventricle. Can effectively prevent the displacement of the blood pumping device in the patient body and avoid the collision of the blood pumping device and tissues in the heart.

As shown in fig. 2, the pump vessel 10 is provided with a one-way valve comprising: a valve plate 13 and a wedge-shaped sealing ring 14;

the bottom end of the valve plate 13 is rotationally connected with the wall of the pump blood vessel 10 below the outlet 12;

the sealing ring 14 is arranged at the inner side of the outlet 12, the valve plate 13 is attached to the inner side of the sealing ring 14 when being closed, and the circumference of the valve plate 13 is larger than the circumference of the outer ring of the sealing ring 14;

the tail end of the pump blood vessel 10 is communicated with a pump assembly;

in the blood drawing process, the valve plate 13 is attached to the sealing ring 14 under the action of blood pressure, so that the outlet 12 is closed; thereby drawing blood out of the left ventricle;

during blood transfusion, the valve sheet 13 turns inwards under the action of blood pressure to block the pump blood vessel 10 below the outlet 12, and the outlet 12 is opened, so that blood is input into the aorta.

As shown in fig. 1, the aortic fixation assembly is a first balloon 21 disposed outside the pump vessel 10, the first balloon 21 is positioned below the outlet 12, and the first balloon 21 expands to fix the pump vessel 10 with the aortic arch; the first balloon 21 also has the effect of driving the flow of blood in the aortic arch by contraction and relaxation; the first balloon 21 fills the aortic arch, squeezing blood in the aortic arch to other areas; has the function of preventing blood from flowing backwards.

As shown in fig. 1 and 3, the valve fixing assembly includes: a limit piece 31, a clamping piece 32 and a first sleeve 33;

the limiting piece 31 is fixed on the outer wall of the pump blood vessel 10;

the clamping piece 32 is sleeved outside the pump blood vessel 10, the clamping piece 32 is connected with the limiting piece 31 through a spring, and the clamping piece 32 and the limiting piece 31 are attached together under the action of spring force in a stress-free state;

the clamping piece 32 is provided with a lifting piece extending to the outside of the body, so that the clamping piece 32 is conveniently pulled away from the limiting piece 31 to clamp the aortic valve;

the first sleeve 33 sleeves the pump blood vessel 10, the limiting piece 31, the clamping piece 32 and the lifting piece, so that the limiting piece 31 and the clamping piece 32 can conveniently reach a designated position; the lifting piece is prevented from shaking in the body.

As shown in fig. 1, the head end fixing component is a pigtail catheter 41 disposed at the head end of the pump blood vessel 10, and the head end of the pigtail catheter 41 contacts with the inner wall of the left ventricle, so as to prevent the head end of the pump blood vessel 10 from displacing in the left ventricle.

Example 2:

as shown in fig. 4, the aortic fixation assembly is a mesh stent 22 disposed outside the pump vessel 10, and the mesh stent 22 dilates to fix the pump vessel 10 to the aorta; the mesh support 22 is capable of filtering thrombus.

Example 3:

as shown in fig. 5, the valve fixing assembly includes: a second balloon 34 and a second cannula 35;

the second balloon 34 is disposed outside the pump vessel 10;

the second sleeve 35 is used for sleeving the pump blood vessel 10 and the second balloon 34;

the second balloon 34 is in diastole fit with the inner wall of the second sleeve 35 to clamp the aortic valve.

Example 4:

as shown in fig. 6, the valve fixing assembly includes: a trapezoidal conduit 36 and a third sleeve 37;

the trapezoid catheter 36 is sleeved outside the pump blood vessel 10, and the inner wall of the trapezoid catheter 36 is matched with the outer wall of the pump blood vessel 10 to clamp an aortic valve;

the third sleeve 37 is used for sleeving the trapezoid catheter 36, so that the trapezoid catheter 36 can reach a designated position conveniently.

Example 5:

as shown in fig. 7, the head end fixing assembly is a balloon 42 disposed at the head end of the pump vessel 10, and the balloon 42 is inflated by an airway disposed in the pump vessel 10, so that the head end of the balloon 42 contacts the inner wall of the left ventricle, thereby preventing the head end of the pump vessel 10 from being displaced in the left ventricle.

Example 6:

as shown in fig. 8, the head end fixing assembly is a suction cup 43 disposed at the head end of the pump blood vessel 10, and the suction cup 43 provides negative pressure through an air duct disposed in the pump blood vessel 10, so that the suction cup 43 is adsorbed on the inner wall of the left ventricle, thereby preventing the head end of the pump blood vessel 10 from being displaced in the left ventricle.

Example 7:

as shown in fig. 9, the head end fixing assembly is a net support 44 disposed at the head end of the pump blood vessel 10, and the net support 44 is expanded in the left ventricle to contact with the inner wall of the left ventricle, thereby preventing the head end of the pump blood vessel 10 from being displaced in the left ventricle.

Example 8:

as shown in fig. 10 and 11, the head end fixing assembly includes: a screw anchor 45 and a guide hook 46;

the spiral anchor 45 extends through the pump vessel 10 into the left ventricle, the spiral anchor 45 anchoring into the heart wall by rotation, thereby preventing displacement of the head end of the pump vessel 10 within the left ventricle;

the guide hooks 46 extend through the pump vessel 10 into the left ventricle for guiding the position and orientation of the spiral anchor 45.

Example 9:

as shown in fig. 12 and 13, the head end fixing assembly includes: an elastic hook claw 47;

the elastic claw 47 extends into the left ventricle through the pump blood vessel 10, and the elastic claw 47 is accommodated in the pump blood vessel 10 and has elastic potential energy of bending;

in the fixing process, the head end of the pump blood vessel 10 abuts against the inner wall of the heart, the elastic hook claw 47 is pushed out of the pump blood vessel 10, and in the process that the elastic hook claw 47 is inserted into the heart wall, the elastic hook claw 47 bends and hooks the heart wall under the action of elastic potential energy, so that the head end of the pump blood vessel 10 is prevented from displacing in the left ventricle.

In summary, compared with the prior art, the invention has the following beneficial effects:

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An aortic blood pumping apparatus fixation system, the fixation system comprising: a pump vessel (10), an aortic fixation assembly, a valve fixation assembly, and a head end fixation assembly;

the head end of the pump blood vessel (10) is inserted from the femoral artery, passes through the aorta and enters the left ventricle;

the pump blood vessel (10) is provided with an inlet (11) and an outlet (12); the inlet (11) is arranged in the left ventricle, and the outlet (12) is arranged in the aorta;

the aortic fixation assembly secures a pump vessel (10) located within the aorta; the valve fixation assembly secures a pump vessel (10) at the aortic valve; the head end fixing component supports and fixes a pump blood vessel (10) positioned in the left ventricle.

2. The aortic pumping apparatus fixation system of claim 1, wherein the aortic fixation assembly is a first balloon (21) disposed outside the pump vessel (10), the first balloon (21) being positioned below the outlet (12), the first balloon (21) dilating to fix the pump vessel (10) to the aortic arch.

3. The aortic blood pumping apparatus fixation system of claim 1, wherein the valve fixation assembly comprises: a limit piece (31), a clamping piece (32) and a first sleeve (33);

the limiting piece (31) is fixed on the outer wall of the pump blood vessel (10);

the clamping piece (32) is sleeved outside the pump blood vessel (10), the clamping piece (32) is connected with the limiting piece (31) through a spring, and the clamping piece (32) and the limiting piece (31) are attached together under the action of spring force in a stress-free state;

the clamping piece (32) is provided with a lifting piece extending to the outside of the body;

the first sleeve (33) is sleeved on the pump blood vessel (10), the limiting piece (31), the clamping piece (32) and the lifting piece.

4. The aortic blood pumping apparatus fixation system of claim 1, wherein the head end fixation assembly is a pigtail catheter (41) disposed at a head end of the pump vessel (10), the head end of the pigtail catheter (41) being in contact with an inner wall of the left ventricle.

5. The aortic blood pumping apparatus fixation system of claim 1, wherein the aortic fixation assembly is a mesh stent (22) disposed outside the pump vessel (10), the mesh stent (22) dilating to fix the pump vessel (10) to the aorta; the mesh stent (22) is capable of filtering thrombus.

6. The aortic blood pumping apparatus fixation system of claim 1, wherein the valve fixation assembly comprises: a second balloon (34) and a second sleeve (35);

the second balloon (34) is arranged outside the pump blood vessel (10);

the second sleeve (35) is used for sleeving the pump blood vessel (10) and the second balloon (34);

the second balloon (34) is matched with the inner wall of the second sleeve (35) in a diastole mode to clamp the aortic valve.

7. The aortic blood pumping apparatus fixation system of claim 1, wherein the valve fixation assembly comprises: a trapezoidal conduit (36) and a third sleeve (37);

the trapezoid catheter (36) is sleeved outside the pump blood vessel (10), and the inner wall of the trapezoid catheter (36) is matched with the outer wall of the pump blood vessel (10) to clamp an aortic valve;

the third sleeve (37) is sleeved on the trapezoid catheter (36).

8. The aortic blood pumping apparatus fixation system of claim 1, wherein the head end fixation assembly is a balloon (42) disposed at a head end of the pump vessel (10), the balloon (42) being inflated by an airway disposed within the pump vessel (10) such that the head end of the balloon (42) is in contact with an inner wall of the left ventricle.

9. The aortic blood pumping apparatus fixation system of claim 1, wherein the head end fixation assembly is a suction cup (43) disposed at a head end of the pump vessel (10), the suction cup (43) providing negative pressure through an airway disposed within the pump vessel (10) such that the suction cup (43) is adsorbed to an inner wall of the left ventricle.

10. The aortic blood pumping apparatus fixation system of claim 1, wherein the head end fixation assembly is a net support (44) disposed at a head end of the pump vessel (10), the net support (44) being diastolic within the left ventricle in contact with an inner wall of the left ventricle.

11. The aortic blood pumping apparatus fixture system of claim 1, wherein the head end fixture assembly comprises: a screw anchor (45) and a guide hook (46);

the spiral anchor (45) extends into the left ventricle through the pump vessel (10), the spiral anchor (45) anchoring into the heart wall by rotation;

the guide hook (46) extends through the pump vessel (10) into the left ventricle for guiding the position and orientation of the spiral anchor (45).

12. The aortic blood pumping apparatus fixture system of claim 1, wherein the head end fixture assembly comprises: an elastic hook claw (47);

the elastic claw (47) extends into the left ventricle through the pump blood vessel (10), and the elastic claw (47) is accommodated in the pump blood vessel (10) and has bending elastic potential energy.