CN212997954U - Aortic root blood pumping device - Google Patents

Aortic root blood pumping device Download PDF

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CN212997954U
CN212997954U CN202021500917.5U CN202021500917U CN212997954U CN 212997954 U CN212997954 U CN 212997954U CN 202021500917 U CN202021500917 U CN 202021500917U CN 212997954 U CN212997954 U CN 212997954U
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blood vessel
coronary artery
artificial blood
pump
blood
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CN202021500917.5U
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彭博
王强
刘志敏
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Fuwai Yunnan Cardiovascular Hospital
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Fuwai Yunnan Cardiovascular Hospital
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Abstract

The utility model relates to the field of medical treatment, specifically disclose an aorta root pump blood device, include artificial blood vessel and establish the first pump body that is used for pump sending blood in artificial blood vessel, artificial blood vessel's one end is for being connected to the near-end oral area of aorta root, and the top that lies in near-end oral area on the artificial blood vessel is equipped with in proper order and is used for the coronary artery connecting portion of being connected with the coronary artery and is used for blockking the bluff body that blood flows, and the blood flow that the fluid of being hindered blockked flows back to coronary artery connecting portion. The blood pumping device of the utility model is a structure with an artificial blood vessel built in, and the blood pump can be installed by replacing the corresponding aorta area during the operation, thereby reducing the complexity of the operation and the operation wound; because the flow blocking body is additionally arranged in the artificial blood vessel, when the pump body works, pumped blood flows in the artificial blood vessel, partial blood flows back under the blockage of the flow blocking body and flows into coronary artery through the coronary artery connecting part, the blood supply of the coronary artery is greatly improved, and therefore sufficient blood is provided for cardiac muscle.

Description

Aortic root blood pumping device
Technical Field
The utility model relates to the field of medical treatment, especially, relate to an aorta root blood pumping device.
Background
The Left Ventricular Assist Device System (LVADS) is mainly used for treating patients with congestive heart failure such as coronary atherosclerotic heart disease, hypertensive heart disease, cardiomyopathy, etc.; LVADS is a device that draws blood from the left ventricle of a patient and pumps it to the aorta to partially or completely replace cardiac function to maintain blood circulation; at present, a blood pump for constructing the system is mainly installed at the left ventricle apex of a patient, so that the operation is complex, the operation wound is large, the bleeding risk is high, most of blood pumped out of the blood pump flows to the far end, the blood flow of coronary artery is seriously reduced, the myocardial ischemia of the patient is caused, and even sudden death accidents are caused in severe cases.
The above technical problems need to be solved.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an aorta root blood pumping device is favorable to reducing the operation complexity, reduces the operation wound, reduces patient's misery to improve the coronary artery blood supply, can provide sufficient blood for cardiac muscle, prevent that the patient from appearing the ischemic accident of cardiac muscle.
In order to achieve the above object, the utility model provides an aorta root blood pumping device, include artificial blood vessel and establish the first pump body that is used for pump sending blood in artificial blood vessel, artificial blood vessel's one end is for being connected to the near-end oral area of aorta root, the top that lies in near-end oral area on the artificial blood vessel is equipped with in proper order and is used for the coronary artery connecting portion of being connected with the coronary artery and is used for blockking the bluff body that blood flows, and receives the blood flow that the bluff body blockked flows back to coronary artery connecting portion.
As a further improvement of the technical proposal of the utility model, the coronary artery connecting part comprises two connecting holes which are respectively arranged at the left and the right sides of the artificial blood vessel.
As a further improvement of the technical proposal of the utility model, the connecting hole is connected with a coronary artery artificial anastomosis blood vessel which is used for anastomosing with the coronary artery of the human body.
As a further improvement of the technical proposal of the utility model, the flow-blocking body is in a hollow tubular shape, the outer wall of the flow-blocking body is fixed on the inner wall of the artificial blood vessel, and a blood flow pipeline coaxial with the artificial blood vessel is arranged in the flow-blocking body; the bottom of the flow blocking body is an inclined plane, and the inclined plane inclines towards the central axis of the artificial blood vessel from top to bottom.
As a further improvement of the technical proposal of the utility model, the inclined plane is connected with the inner wall of the choking body in a smooth transition way.
As the utility model discloses technical scheme's further improvement, artificial blood vessel includes first body and second body, first body is the ball area structure, first body is all located to near-end oral area portion and coronary artery connecting portion, the second body is the butt joint of the upper end of pipe structure and its lower extreme and first body, just the diameter of second body is less than the diameter of first body.
As a further improvement of the technical proposal of the utility model, the lower end of the near-end opening part is also connected with a suture ring which is used for being sewed with the aortic valve annulus.
As the utility model discloses technical scheme's further improvement, first pump body is fixed in near-end oral area department and includes the pump shell and establish the installing support in the pump shell, it is connected with the coaxial pivot with artificial blood vessel to rotate in the installing support, be fixed with the impeller in the pivot, install the driver that is used for driving the pivot rotation on the installing support, the driver passes through the wire connection and is located the controller outside the artificial blood vessel.
As a further improvement of the technical scheme of the utility model, be equipped with the second pump body in the blood flow pipeline.
As the utility model discloses technical scheme's further improvement, the second pump body is including locating in the blood flow pipeline and with the rotor drum of the coaxial setting of blood flow pipeline and fix the rotor blade at rotor drum inner wall, the outer wall of rotor drum has inlayed the permanent magnet, still install in the pipe wall of bluff body and be used for driving the rotatory electromagnetic drive coil of rotor drum, electromagnetic drive coil passes through the wire connection and is located the controller outside the artificial blood vessel, the electric current size and the direction in the controller control electromagnetic drive coil are in order to produce with permanent magnet complex alternating magnetic field in order to drive the rotor drum rotatory.
Compared with the prior art, the utility model discloses can have following beneficial technological effect:
firstly, the blood pumping device of the utility model is a structure with an artificial blood vessel built in, and the blood pump can be installed by replacing the corresponding aorta area during operation, thereby reducing the complexity of the operation, reducing the operation wound and greatly reducing the pain of the patient;
secondly, the blood pumping device of the utility model adds the choking body in the artificial blood vessel, when the blood pumped by the pump body flows in the artificial blood vessel when the pump body works, part of the blood flows back by being blocked by the choking body and flows into the coronary artery through the coronary artery connecting part, thus greatly improving the blood supply of the coronary artery, providing sufficient blood for the cardiac muscle and effectively preventing the occurrence of myocardial ischemia accidents of patients;
thirdly, the blood pumping device of the utility model is of a double-pump structure, which not only can effectively improve the blood pumping efficiency, but also the first pump body and the second pump body mutually play a redundant role, thereby improving the safety and effectiveness of use;
fourthly, in some improvement schemes, a connecting hole connected with the coronary artery and a coronary artery artificial anastomosis blood vessel are prefabricated in the artificial blood vessel, so that the rapid anastomosis of the coronary artery is facilitated, and the operation efficiency is effectively improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1.
Detailed Description
In order to make the technical solution of the present invention better understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments; of course, the drawings are simplified schematic drawings, and the scale of the drawings does not limit the patented products.
Examples
As shown in fig. 1 and 2, the arrows in fig. 1 show the schematic flow of blood in use: the embodiment provides an aortic root blood pumping device, including artificial blood vessel 1 and establish the first pump body that is used for pumping blood in artificial blood vessel 1, the one end of artificial blood vessel 1 is for being used for being connected to the proximal port portion 1a of aortic root, it is equipped with the coronary artery connecting portion that is used for being connected with the coronary artery and is used for blockking the bluff body 2 that blood flows in proper order (from lower to upper) to be located the top of proximal port portion 1a on artificial blood vessel 1, and receive the blood flow that bluff body 2 blockked flows back to coronary artery connecting portion.
The material of the artificial blood vessel 1 is the same as that of the prior art, and for example, the artificial blood vessel can be made by sewing medical terylene or polytetrafluoroethylene fabric; the structure of the artificial blood vessel 1 is similar to that of a valved pipeline used in bentall surgery, and an artificial valve is not required to be arranged but can be replaced by a first pump body; both ends of the artificial blood vessel 1 are opened; the whole installation mode of the blood pump can refer to bentall operation, as long as the aortic valve which is not functional of a patient is cut off in the operation, the aortic valve annulus is left, the proximal port 1a of the artificial blood vessel 1 is installed at the root part of the aorta, the distal port is installed at one end of the disconnected aorta, and then the human coronary artery is anastomosed to the coronary connection part. The first pump body can adopt various existing pump structures, such as a centrifugal pump, an axial flow pump and the like, as long as the first pump body can play a role in pumping blood, and the position of the first pump body in the artificial blood vessel 1 can be determined according to requirements. "Upper" and "lower" are based on the pattern shown in FIG. 1.
The blood pumping device of the embodiment is of a structure with the built-in artificial blood vessel 1, and can be installed by replacing a corresponding aorta area during operation, so that the complexity of the operation is reduced, the operation wound is reduced, and the pain of a patient is greatly reduced; in addition, the blood pumping device of the embodiment adds the choking body 2 in the artificial blood vessel 1, when the pump body works, the pumped blood flows in the artificial blood vessel 1, part of the blood flows back by being blocked by the choking body 2 and flows into coronary artery through the coronary artery connecting part, so that the blood supply of the coronary artery is greatly improved, sufficient blood is provided for the cardiac muscle, and the myocardial ischemia accident of a patient is effectively prevented.
In the embodiment, the coronary artery connecting part comprises two connecting holes 3 which are respectively arranged at the left side and the right side of the artificial blood vessel 1; "left" and "right" are based on the directions shown in FIG. 1; the connecting hole 3 is a round hole which can be sewed and matched with the coronary artery of a human body, and can be made into different apertures to be matched with a specific patient; the preset connecting hole 3 can facilitate the operation, ensure the forming degree of the connecting hole 3 and improve the operation effect; furthermore, the connecting hole 3 can be connected with a coronary artery artificial anastomosis blood vessel 4 which is used for anastomosing with the coronary artery of the human body, and the coronary artery of the human body is directly anastomosed with the coronary artery artificial anastomosis blood vessel 4 during the operation, so that the rapid anastomosis of the coronary artery is realized, and the operation efficiency is further improved. Of course, in the case of not providing the connection hole 3 and the coronary artery artificial anastomosis vessel 4, the operator is required to open a through hole adapted to the coronary artery of the patient at the coronary artery connection part of the artificial vessel 1 during the operation.
In this embodiment, the flow blocking body 2 is in a hollow tubular shape, the outer wall of the flow blocking body is fixed on the inner wall of the artificial blood vessel 1, and a blood flow pipeline 2a coaxial with the artificial blood vessel 1 is arranged in the flow blocking body 2; the bottom of the flow blocking body 2 is an inclined surface 2b, and the inclined surface 2b inclines towards the central axis of the artificial blood vessel 1 from top to bottom; the fluid blocking body 2 can be made of medical plastics or medical metal and can be fixed in the artificial blood vessel 1 in a mode of edge sewing; the diameter of the blood flow conduit 2a may be, for example, 1/2-3/4 of the diameter of the artificial blood vessel 1; the whole of the fluid blocking body 2 is a revolving body structure, and the inclined plane 2b at the bottom is a structure inclined from the top to the bottom and from the outside to the inside so as to form the blocking to part of the blood flow, so that the part of the blood flows towards the side wall of the artificial blood vessel 1 and enters the connecting hole 3. Meanwhile, in order to reduce the damage to blood, the inclined plane is smoothly and transitionally connected with the inner wall of the fluid blocking body 2; the upper end of the bluff body 2 is also provided with a smooth bell mouth-shaped structure to gradually butt joint with the pore canal of the artificial blood vessel 1, so as to prevent the generation of a blood retention area to cause thrombus. Because the artificial blood vessel 1 is a bendable structure, the "coaxial" is relative to the state that the artificial blood vessel is in a straight pipe.
In this embodiment, the artificial blood vessel 1 includes a first tubular body 11 and a second tubular body 12, the first tubular body 11 is a spherical belt structure, the first tubular body 11 is all located to near-end mouth portion 1a and coronary artery connecting portion, the second tubular body 12 is a circular tube structure and the upper end butt joint of its lower extreme and first tubular body 11, just the diameter of the second tubular body 12 is less than the diameter of the first tubular body 11. The spherical belt structure is a part of the spherical surface clamped between two parallel sections, and the diameter of the spherical belt structure is the inner diameter of the original spherical surface; by adopting the structure, the connection with the root of the aorta is convenient, the operation area of the human body during coronary connection is enlarged, and the transition position of the first tube body 11 and the second tube body 12 naturally forms the blocking and drainage to blood, thus increasing the blood supply of the coronary; the diameter of the second tube 12 can be 1/2-4/5 of the diameter of the first tube 11; the first pipe 11 and the second pipe 12 may be integrally provided.
In this embodiment, the lower end of the proximal port 1a is further connected with a suture ring 4 for suturing with the aortic annulus; the suture ring 4 can be formed by extending the artificial blood vessel 1 downwards and turning outwards; the artificial blood vessel 1 is connected with the root part of the aorta through the suture ring 4, so that the operation efficiency can be improved.
In this embodiment, the first pump body is fixed at the proximal port portion 1a and includes a pump housing 51 and a mounting bracket 52 arranged in the pump housing 51, a rotating shaft 53 coaxial with the artificial blood vessel 1 is rotatably connected in the mounting bracket 52, an impeller 54 is fixed on the rotating shaft 53, a driver 55 for driving the rotating shaft 53 to rotate is installed on the mounting bracket 52, and the driver 55 is connected to the controller 8 located outside the artificial blood vessel 1 through a wire 7. The pump housing 51 can be fixed to the proximal port portion 1a by edge seaming; the mounting bracket 52 may be formed of upper and lower support rods, which are "C" shaped, with the impeller 54 located between the upper and lower support rods; the driver 55 may be, for example, a micro motor, and an output shaft thereof is in transmission connection with the rotating shaft 53; the lead 7 can be led out of the human body, and the controller 8 and the power supply 9 can be arranged outside the human body at the moment, and can be of the existing structure embedded in the skin of the human body; the impeller 54 generates negative pressure when rotating, thereby driving blood to flow, and the structure and the principle are the same as the prior art; the first pump body is fixed at the proximal port portion 1a, i.e., below the coronary junction, thereby providing greater power for blood to enter the coronary.
In this embodiment, still be equipped with the second pump body in the blood flow pipeline 2a for the structure of the two pump bodies is constituteed to the pump blood device of this embodiment, not only can effectively improve blood pumping efficiency, and the first pump body still plays redundant effect each other with the second pump body moreover, has improved security and the validity of using.
The second pump body may have the same structure as the first pump body, or may have another structure. Preferably, the second pump body comprises a rotor cylinder 61 which is arranged in the blood flow pipeline 2a and is coaxial with the blood flow pipeline 2a, and rotor blades 62 which are fixed on the inner wall of the rotor cylinder 61, a permanent magnet 63 is embedded in the outer wall of the rotor cylinder 61, an electromagnetic driving coil 64 which is used for driving the rotor cylinder 61 to rotate is further installed in the pipe wall of the flow blocking body 2, the electromagnetic driving coil 64 is connected with a controller 8 which is located outside the artificial blood vessel 1 through a lead 7, and the controller 8 controls the current magnitude and direction in the electromagnetic driving coil 64 to generate an alternating magnetic field which is matched with the permanent magnet 63 so as to drive the rotor cylinder 61 to rotate. At this time, the pipe wall of the bluff body 2 is provided with a rotor mounting groove and bearing mounting grooves which are positioned at two ends of the rotor mounting groove and communicated with the rotor mounting groove, the rotor cylinder 61 is mounted in the rotor mounting groove through a rotating bearing arranged in a bearing 65 mounting groove, and the inner wall of the rotor cylinder 61 is flush with the pipe wall of the bluff body 2 after mounting; the wall of the choke body 2 is also provided with a coil mounting groove and a wire passing pore passage communicated with the coil mounting groove, the electromagnetic drive coil 64 is fixed in the coil mounting groove, and the lead 7 penetrates through the wire passing pore passage to be connected with the electromagnetic drive coil 64; the electromagnetic drive coil 64 and the permanent magnet 63 form a magnetic coupling drive structure, which is the prior art and is not described herein again; under the control of the controller 8, the rotation speed and the rotation direction of the rotor cylinder 61 can be adjusted as required; like the first pump body, the controller 8 and the power supply 9 can be arranged outside the body, or can be embedded in the skin of a human body in the prior art, and the second pump body and the first pump body can share the controller 8 and the power supply 9. The rotor blade 62 is preferably a spiral blade structure, and a spiral blood flow channel is formed between the side wall of the rotor blade 62 and the inner wall of the bluff body 2, and when the rotor blade 62 rotates, blood enters the spiral blood flow channel and is accelerated and conveyed in the spiral blood flow channel, which is beneficial to reducing damage to blood and increasing the blood flow rate.
Finally, it is stated that the specific individual example is used herein to explain the principle and the implementation of the present invention, and the explanation of the above embodiment is only used to help understand the core idea of the present invention, without departing from the principle of the present invention, it is also possible to make the present invention undergo several improvements and modifications, and these improvements and modifications also fall into the protection scope of the present invention.

Claims (10)

1. An aortic root blood pumping device, characterized in that: including artificial blood vessel and establish the first pump body that is used for pump sending blood in artificial blood vessel, artificial blood vessel's one end is for being used for being connected to the near-end oral area of aorta root, the top that lies in near-end oral area on the artificial blood vessel is equipped with in proper order and is used for the coronary artery connecting portion of being connected with the coronary artery and is used for blockking the choked flow body that blood flows, and receives the blood flow that choked flow body and blockked flows back to coronary artery connecting portion.
2. The aortic root pumping device of claim 1, wherein: the coronary artery connecting part comprises two connecting holes which are respectively arranged at the left side and the right side of the artificial blood vessel.
3. The aortic root pumping device of claim 2, wherein: the connecting hole is connected with a coronary artery artificial anastomosis blood vessel which is used for anastomosing with the coronary artery of the human body.
4. The aortic root pumping device of claim 1, wherein: the flow blocking body is in a hollow tubular shape, the outer wall of the flow blocking body is fixed on the inner wall of the artificial blood vessel, and a blood flow pipeline coaxial with the artificial blood vessel is arranged in the flow blocking body; the bottom of the flow blocking body is an inclined plane, and the inclined plane inclines towards the central axis of the artificial blood vessel from top to bottom.
5. The aortic root pumping device of claim 4, wherein: the inclined plane is in smooth transition connection with the inner wall of the flow blocking body.
6. The aortic root pumping device of claim 1, wherein: the artificial blood vessel comprises a first tube body and a second tube body, wherein the first tube body is of a spherical belt structure, the near-end opening part and the coronary artery connecting part are arranged on the first tube body, the second tube body is of a circular tube structure, the lower end of the second tube body is in butt joint with the upper end of the first tube body, and the diameter of the second tube body is smaller than that of the first tube body.
7. The aortic root pumping device of claim 1, wherein: the lower end of the proximal port is also connected with a suture ring for suturing with the aortic valve annulus.
8. The aortic root pumping device of claim 1, wherein: the utility model discloses a pump, including pump shell, first pump body, installation support, impeller, driver, first pump body is fixed in near-end oral area department and includes pump shell and establish the installing support in pump shell, rotate in the installing support and be connected with the coaxial pivot with artificial blood vessel, be fixed with the impeller in the pivot, install the driver that is used for driving the pivot rotation on the installing support, the driver passes through the controller that the wire connection is located artificial blood vessel outside.
9. The aortic root pumping device as set forth in claim 4 or 5, wherein: and a second pump body is arranged in the blood flow pipeline.
10. The aortic root pumping device of claim 9, wherein: the second pump body comprises a rotor cylinder and rotor blades, the rotor cylinder is arranged in the blood flow pipeline and is coaxial with the blood flow pipeline, the rotor blades are fixed on the inner wall of the rotor cylinder, a permanent magnet is embedded in the outer wall of the rotor cylinder, an electromagnetic driving coil used for driving the rotor cylinder to rotate is further installed in the wall of the flow blocking body, the electromagnetic driving coil is connected with a controller located outside the artificial blood vessel through a lead, and the controller controls the size and the direction of current in the electromagnetic driving coil to generate an alternating magnetic field matched with the permanent magnet to drive the rotor cylinder to rotate.
CN202021500917.5U 2020-07-28 2020-07-28 Aortic root blood pumping device Active CN212997954U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021500917.5U CN212997954U (en) 2020-07-28 2020-07-28 Aortic root blood pumping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021500917.5U CN212997954U (en) 2020-07-28 2020-07-28 Aortic root blood pumping device

Publications (1)

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CN212997954U true CN212997954U (en) 2021-04-20

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Application Number Title Priority Date Filing Date
CN202021500917.5U Active CN212997954U (en) 2020-07-28 2020-07-28 Aortic root blood pumping device

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CN (1) CN212997954U (en)

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