Close-range valve-pump integrated ventricular assist circulation pump device

Abstract

The present invention provides a close-range valve pump integrated ventricular assist circulation pump device, which relates to the field of cardiac blood pump technology and includes: a ventricular assist circulation pump device, which is connected in series with the cardiac artery tube, and the ventricular assist circulation pump device is arranged in the ventricle and below the aortic valve or the pulmonary valve; the ventricular assist circulation pump device includes an axial flow channel and a power unit located in the axial flow channel; the upper end of the axial flow channel is provided with a radially outward flange portion, the flange portion faces the lower surface of the aortic valve or the pulmonary valve and is sutured to the aortic root or the pulmonary artery root, the flange portion serves as an installation plane, the power unit has an impeller rotating in the axial direction of the axial flow channel, and the impeller outlet plane is in the same plane as the plane where the flange portion is located, providing the ventricular assist circulation pump device with a maximum pressure directly adjacent to the aortic valve or the pulmonary valve.

Description

Technical Field

[0001] The present invention relates to the technical field of cardiac blood pumps, and in particular to a close-range valve pump integrated ventricular assist circulation pump device. Background Art

[0002] In order to solve the problem of low blood pressure in patients with heart failure due to decreased heart function, a heart blood pump is generally used to assist the blood circulation in the ventricles. At present, there are two main designs of heart blood pumps, one is connected in parallel to the heart's channel, and the other is connected in series to the heart's channel. The channel refers to the blood flow channel constructed on the heart's artery. The heart blood pump is sewn into the blood flow channel. When the drive motor provides kinetic energy, the impeller on the motor will drive the blood in the blood flow channel to rotate, driving the blood to form pressure on the aortic valve or pulmonary valve above it, causing the aortic valve or pulmonary valve to open upward, so that blood is ejected from the inside of the ventricle into the heart's artery.

[0003] Regarding serially configured cardiac blood pumps, such as patent CN117379681A, the cardiac blood pump adopts a serial configuration. However, when designing the cardiac blood pump, the motor of the cardiac blood pump is placed outside the ventricle, which requires the motor to pass through the ventricle via a support rod. This not only damages the ventricle but also increases the difficulty of surgery. In addition, there is a long distance between the impeller on the motor and the aortic valve or pulmonary valve, resulting in the drive motor providing kinetic energy requiring a large amount of kinetic energy to generate the required pressure on the aortic valve or pulmonary valve located above it. Therefore, how to solve the problem of the high surgical difficulty when implanting a serially configured cardiac blood pump and how to effectively pump blood with less kinetic energy are the technical problems to be solved by the present invention. Summary of the Invention

[0004] The object of the present invention is to provide a close-range valve pump integrated ventricular assist circulation pump device, which proposes a structure in which the ventricular assist circulation pump device is arranged in the ventricle and below the aortic valve or the pulmonary valve, and on this basis, the relative distance between the motor and the aortic valve or the pulmonary valve is shortened to provide the maximum pressure of the ventricular assist circulation pump device directly adjacent to the aortic valve or the pulmonary valve.

[0005] In order to solve the above technical problems, the present invention adopts the following solutions:

[0006] A close-range valve-pump integrated ventricular assist circulation pump device comprises: a ventricular assist circulation pump device, the ventricular assist circulation pump device being connected in series with a cardiac artery, and the ventricular assist circulation pump device being arranged in a ventricle and below an aortic valve or a pulmonary valve;

[0007] The ventricular assist circulation pump device includes an axial flow channel and a power unit located in the axial flow channel;

[0008] The upper end of the axial flow channel is provided with a radially outward flange portion, which faces the lower surface of the aortic valve or the pulmonary valve and is sutured to the aortic root or the pulmonary artery root. The flange portion serves as an installation plane. The power unit has an impeller that rotates in the axial direction of the axial flow channel, and the impeller outlet plane is in the same plane as the plane where the flange portion is located, providing the aortic valve or the pulmonary valve with the maximum pressure directly adjacent to the ventricular assist circulation pump device.

[0009] A further preferred technical solution is: the power unit includes a motor, the axial direction of the motor is the same as the axial direction of the axial flow channel, the upper end of the motor faces the lower surface of the aortic valve or the pulmonary valve, and the lower end of the motor faces the ventricle, and the motor is provided with a rotor and a stator, one of the rotor and the stator includes a permanent magnet and one of the rotor and the stator includes a winding coil, and the impeller is driven to rotate in the axial direction through the interaction between the rotor and the stator.

[0010] A further preferred technical solution is: a fixed bracket is also provided between the motor and the axial flow channel, and the fixed bracket includes at least one tubular support rod, one end of the support rod is connected to the motor, and the other end of the support rod is connected to the axial flow channel. The fixed connection between the motor and the axial flow channel is achieved through the fixed bracket, so that a blood flow channel is formed between the motor and the axial flow channel.

[0011] A further preferred technical solution is: the length of the motor in the axial direction is greater than the length of the axial flow channel in the axial direction, and the motor is divided into an upper half and a lower half. One end of the support rod is connected to the inner wall of the axial flow channel, so that the motor is fixed on the axial flow channel; the other end of the support rod is connected to the outer wall of the upper half of the motor, so that the upper half of the motor is located in the axial flow channel and the lower half of the motor is exposed outside the axial flow channel and is located in the ventricle.

[0012] A further preferred technical solution is: the power part also includes a power part connected to one end of the motor, an impeller is provided on the outer wall of the power part, an inner rotor and an outer stator are configured in the motor, one of the inner rotor and the outer stator includes a permanent magnet and one of the rotor and the stator includes a winding coil, the inner rotor is rotatably installed in the outer stator, and one end of the inner rotor located in the axial flow channel is connected to the power part, so that the inner rotor rotates while driving the impeller to rotate.

[0013] A further preferred technical solution is: the length of the motor in the axial direction is less than or equal to the length of the axial flow channel in the axial direction, the upper and lower ends of the axial flow channel are respectively provided with fixed brackets, one end of the support rod is connected to the upper or lower end of the axial flow channel, and the other end of the support rod is connected to one end of the inner stator, so that the motor is fixed on the axial flow channel and is located in the axial flow channel.

[0014] A further preferred technical solution is: the motor is configured with an outer rotor and an inner stator, one of the outer rotor and the inner stator includes a permanent magnet and one of the outer rotor and the inner stator includes a winding coil, the outer rotor is rotatably mounted outside the inner stator, the outer rotor serves as the outer casing of the motor, and an impeller is provided on the outer wall of the outer casing, so that the outer rotor rotates and drives the impeller to rotate at the same time.

[0015] A further preferred technical solution is: the motor has a lead wire for driving the motor to supply energy, the lead wire is led to the axial flow channel through the inside of the support rod, and passes through the axial flow channel to the outer wall of the axial flow channel, and then extends radially outward along the flange part, and then led out from the root of the aorta or the root of the pulmonary artery.

[0016] A further preferred technical solution is: a temperature sensor is provided in the motor, a pressure sensor is fixedly provided on the inner wall of the axial flow channel, and the wires and lead wires of the temperature sensor and the pressure sensor are bundled.

[0017] A further preferred technical solution is: it also includes a ventricular assist circulatory valve device; the ventricular assist circulatory valve device is arranged on the flange portion, and the ventricular assist circulatory valve device is assembled, contacted and fixed to the flange portion.

[0018] A further preferred technical solution is: the ventricular assist valve device has a tubular metal stent body, and the metal stent body includes a plurality of longitudinal struts; the lower ends of the longitudinal struts are assembled, contacted and fixed to the flange portion.

[0019] A further preferred technical solution is that the lower end of the longitudinal support is directly welded to the upper surface of the flange portion.

[0020] A further preferred technical solution is that the flange portion is provided with a plurality of assembly holes, the axial direction of the assembly holes is the same as the axial direction of the axial flow channel, and the lower ends of the longitudinal struts are inserted into the assembly holes.

[0021] Beneficial effects of the present invention:

[0022] The present invention provides a close-range valve pump integrated ventricular assist circulation pump device, which adopts an integrated structural design of a ventricular assist circulation pump device and a ventricular assist circulation valve device. The artificial valve is self-expanding and fixed above the root of the human heart valve in the cardiac artery through a metal bracket body. The artificial valve is integrated with the pump structure below, forming an integrated structure above and below the root of the human heart valve, thereby improving the overall supporting performance. It is further proposed that the ventricular assist circulation pump device is arranged in the ventricle and below the aortic valve or pulmonary valve. Compared with the existing technology, the motor is retracted to the top of the ventricle, and the motor does not need to pass through the ventricle through a support rod, which will not cause damage to the ventricle while reducing the difficulty of the operation.

[0023] Moreover, when the driving motor provides kinetic energy, the impeller on the motor will drive the blood in the blood flow channel to rotate, driving the blood to form pressure on the aortic valve or pulmonary valve located above it, causing the aortic valve or pulmonary valve to open upward, thereby allowing blood to spray from the inside of the ventricle into the cardiac artery. The present invention, while retracting the motor into the ventricle, shortens the relative distance between the motor and the aortic valve or pulmonary valve in the blood flow channel, so that there is no obstruction between the motor and the aortic valve or pulmonary valve. The plane formed by the rotation of the impeller on the motor is on the same plane as the plane where the flange portion is located. The vortex generated by the impeller driving the blood can directly form pressure on the aortic valve or pulmonary valve, providing the aortic valve or pulmonary valve with the maximum pressure directly adjacent to the ventricular assist circulation pump device, causing the aortic valve or pulmonary valve to open upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a ventricular assist circulation pump device and a cardiac artery tube connected in series in Example 2 of the present invention;

[0025] Figure 2 This is a left side structural schematic diagram of the central chamber auxiliary circulation pump device according to Example 2 of the present invention;

[0026] Figure 3 This is a schematic structural diagram of the right side view of the central chamber auxiliary circulation pump device in Example 2 of the present invention;

[0027] Figure 4 This is a schematic cross-sectional view of the auxiliary circulation pump device in the central chamber according to Example 2 of the present invention;

[0028] Figure 5 This is a schematic diagram of the arrangement of the temperature sensor and the pressure sensor in Example 2 of the present invention;

[0029] Figure 6 This is a schematic structural diagram of a ventricular assist circulation pump device connected in series with a cardiac artery tube in Example 3 of the present invention;

[0030] Figure 7This is a left side structural schematic diagram of the central chamber auxiliary circulation pump device of Example 3 of the present invention;

[0031] Figure 8 This is a schematic structural diagram of the right side view of the central chamber auxiliary circulation pump device in Example 3 of the present invention;

[0032] Figure 9 This is a schematic cross-sectional view of the auxiliary circulation pump device in the central chamber according to Example 3 of the present invention;

[0033] Figure 10 This is a schematic diagram of the arrangement of the temperature sensor and the pressure sensor in Example 3 of the present invention;

[0034] Explanation of the accompanying drawings: 1-cardiac artery tube, 2-ventricle, 3-ventricular assist circulation pump device, 4-flanged portion, 41-assembly hole, 5-aortic valve or pulmonary valve, 6-aortic root or pulmonary artery root, 7-lead wire, 8-axial flow channel, 9-motor, 100-inner rotor, 101-outer stator, 110-outer rotor, 111-inner stator, 12-power unit, 13-impeller, 14-fixed bracket, 15-bearing, 16-winding coil, 17-permanent magnet, 18-pressure sensor, 19-temperature sensor, 20-artificial valve, 21-metal bracket body. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Unless otherwise specifically stated, the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0037] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0038] Additionally, descriptions of well-known structures, functions, and configurations may be omitted for clarity and conciseness. Those skilled in the art will recognize that various changes and modifications can be made to the examples described herein without departing from the spirit and scope of the present disclosure.

[0039] Technologies, methods and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods and equipment should be considered part of the authorization specification.

[0040] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments:

[0042] Example 1

[0043] In this embodiment, a close-range valve-pump integrated ventricular assist circulation pump device 3 is proposed, comprising: a ventricular assist circulation pump device 3, the ventricular assist circulation pump device 3 being connected in series with a cardiac artery tube 1, and the ventricular assist circulation pump device 3 being arranged inside a ventricle 2 and below an aortic valve or a pulmonary valve 5;

[0044] The ventricular assist circulation pump device 3 includes an axial flow channel 8 and a power unit 12 located in the axial flow channel 8;

[0045] The upper end of the axial flow channel 8 is provided with a radially outward flange portion 4, and the flange portion 4 faces the lower surface of the aortic valve or the pulmonary valve 5 and is sutured to the aortic root or the pulmonary artery root 6. The flange portion 4 serves as an installation plane. The power unit 12 has an impeller 13 that rotates in the axial direction of the axial flow channel 8, and the outlet plane of the impeller 13 is in the same plane as the plane where the flange portion 4 is located, providing the aortic valve or the pulmonary valve 5 with the maximum pressure directly adjacent to the ventricular assist circulation pump device 3.

[0046] A further preferred technical solution is: the power unit 12 includes a motor 9, the axial direction of the motor 9 is the same as the axial direction of the axial flow channel 8, the upper end of the motor 9 faces the lower surface of the aortic valve or the pulmonary valve 5, and the lower end of the motor 9 faces the ventricle 2, and the motor 9 is provided with a rotor and a stator, one of the rotor and the stator includes a permanent magnet 17 and one of the rotor and the stator includes a winding coil, and the impeller 13 is driven to rotate in the axial direction through the interaction between the rotor and the stator.

[0047] A further preferred technical solution is: a fixed bracket 14 is also provided between the motor 9 and the axial flow channel 8, and the fixed bracket 14 includes at least one tubular support rod, one end of the support rod is connected to the motor 9, and the other end of the support rod is connected to the axial flow channel 8. The fixed connection between the motor 9 and the axial flow channel 8 is achieved through the fixed bracket 14, so that a blood flow channel is formed between the motor 9 and the axial flow channel 8.

[0048] Based on the above principles, it can be seen that the close-range valve pump integrated ventricular assist circulation pump device 3 proposes a structure in which the ventricular assist circulation pump device 3 is arranged in the ventricle 2 and below the aortic valve or pulmonary valve 5 based on the series configuration, and on this basis, the relative distance between the motor and the aortic valve or pulmonary valve is shortened to provide the aortic valve or pulmonary valve with the maximum pressure directly adjacent to the ventricular assist circulation pump device.

[0049] The ventricular assist circulatory pump device 3 utilizes a flanging process. The outer diameter of the axial flow channel 8 is approximately equal to that of the cardiac artery tube 1. A flanging process is used to form a flanging portion 4 at the upper end of the axial flow channel 8. The flanging portion 4 should not be too wide; it can be formed to the dimensions of the upper and lower axes. The flanging portion 4 can be a horizontal straight flange or a curved flange. At least one of the upper and lower planes is provided with a suture body as a medium for suture connection to the aortic root or pulmonary artery root 6 and / or the cardiac artery tube 1 using suture thread. The assembly hole 41 is also used for the passage of the suture thread. As can be seen, the present invention utilizes the aortic root or pulmonary artery root 6 to suspend the ventricular assist circulatory pump device 3. The aortic root or pulmonary artery root 6 is the root portion of the heart valve, which generally grows horizontally perpendicular to the cardiac artery tube 1 and is relatively thick. The aortic root or pulmonary artery root 6 has greater toughness and can support heavier devices, which is more beneficial for the convenience of suturing operation, subsequent safety, and the area available for suturing. Compared with the traditional method of directly suturing the inner wall of the cardiac artery tube 1, the cardiac artery tube 1 is less damaged. Among them, the sutures in the present invention are all vertical sutures and will not appear on the inner wall of the axial flow channel 8, avoiding the risk of thrombosis.

[0050] Based on the principle of suturing the aortic root or pulmonary artery root 6 and the flange portion 4, the ventricular assist circulation pump device 3 is connected in series with the cardiac artery tube 1. A configuration is proposed in which the ventricular assist circulation pump device 3 is disposed within the ventricle 2 and below the aortic valve or pulmonary valve 5. The front end of the motor 9 faces the lower surface of the aortic valve or pulmonary valve 5, and the rear end of the motor 9 faces the ventricle 2. The motor 9 does not need to pass through the ventricle 2 via a support rod. Compared to the prior art, the present invention retracts the motor 9 above the ventricle 2, thereby reducing surgical difficulty while preventing damage to the ventricle 2. Specifically, when considering retracting the motor 9 above the ventricle 2, the motor 9 is fixed within the axial flow channel 8 via a fixing bracket 14. A blood flow channel is formed within the axial flow channel 8 through the outer wall of the motor 9 and the inner wall of the axial flow channel 8, thereby reducing the size of the cardiac blood pump in the prior art and facilitating implantation in the human body.

[0051] Moreover, when the motor 9 is retracted to above the ventricle 2, a structure is proposed to shorten the relative distance between the motor 9 and the aortic valve or pulmonary valve 5 in the blood flow channel, so that there is no obstruction between the motor 9 and the aortic valve or pulmonary valve 5, and the plane formed by the rotation of the impeller 13 on the motor 9 is the same plane as the plane where the flange portion 4 is located, so that the vortex generated by the blood driven by the impeller 13 can directly form pressure on the aortic valve or pulmonary valve 5, so that the aortic valve or pulmonary valve 5 opens upward. Compared with the prior art, the close-range valve pump integrated ventricular assist circulation pump device 3 of the present invention adopts three There are two different ways of reducing the size. The first is to reduce the length of the motor 9 itself and remove the support rod, so that the motor 9 does not need to pass through the ventricle 2; the second is to reduce the diameter of the motor 9 so that the motor 9 is located in the axial flow channel 8 to form a blood flow channel; the third is to reduce the relative distance between the blood flow channel of the motor 9 and the aortic valve or the pulmonary valve 5, so that there is no obstruction between the motor 9 and the aortic valve or the pulmonary valve 5, which can solve the problem of greater surgical difficulty when implanting a heart blood pump with a series configuration and the technical problem of how to effectively pump blood out with less kinetic energy to be solved by the present invention.

[0052] A further preferred technical solution is: it also includes a ventricular assist valve device; the ventricular assist valve device is arranged on the flange portion 4, and the ventricular assist valve device is assembled, contacted and fixed to the flange portion 4.

[0053] A further preferred technical solution is: the ventricular assist valve device has a tubular metal stent body 21, and the metal stent body 21 includes a plurality of longitudinal struts; the lower ends of the longitudinal struts are assembled, contacted and fixed to the flange portion 4.

[0054] A further preferred technical solution is that the lower end of the longitudinal support is directly welded to the upper surface of the flange portion 4 .

[0055] A further preferred technical solution is that the flange portion 4 is provided with a plurality of assembly holes 41 , the axial direction of the assembly holes 41 is the same as the axial direction of the axial flow channel 8 , and the lower ends of the longitudinal struts are inserted into the assembly holes 41 .

[0056] Based on the above principles, it can be seen that the close-range valve pump integrated ventricular assist circulation pump device 3 proposed in the present invention also includes a ventricular assist circulation valve device, and adopts an integrated structural design of the ventricular assist circulation pump device 3 and the ventricular assist circulation valve device. An artificial valve is also provided on the ventricular assist circulation pump device 3 with a flange portion 4. The artificial valve 20 is fixed by a metal bracket body 21. The metal bracket body 21 is composed of longitudinal struts, and the lower end of the longitudinal strut is inserted into the assembly hole 41 to self-expand and fix the artificial valve above the root of the human heart valve of the cardiac artery tube. It is integrated with the ventricular assist circulation pump device 3 below to form an integrated structure above and below the root of the human heart valve, thereby improving the overall support performance.

[0057] Specifically, the upper and / or lower surfaces of the cuff portion 4 are pre-installed or temporarily assembled with sutures. The suture located on the upper surface is an upper suture used to suture the lower surface of the aortic root or pulmonary artery root 6 and the circumferential annulus of the ventricular auxiliary circulation pump device 2. The circumferential annulus of the ventricular auxiliary circulation pump device 2 is also used to suture the aortic root or pulmonary artery root 6. The suture located on the lower surface is a lower suture used to suture the inner surface of the cardiac artery tube 1. The suture includes a lower suture and an upper suture. The lower suture, cuff portion 4, and upper suture are stacked up and down to form a stacked assembly. The aortic root or pulmonary artery root 6 is also a horizontal human tissue structure. The aortic root or pulmonary artery root 6, the lower suture, cuff portion 4, and upper suture are stacked up and down to form a stacked assembly. The assembly is in a hanging mode, with the cuff portion 4 being embedded in the stacked assembly. The upper suture body and / or the lower suture body are pre-installed or temporarily assembled on the upper and / or lower sides of the flange portion 4 after the suture passes through the assembly hole 41 .

[0058] Specifically, the assembly holes 41 include assembly holes 41 of a first diameter and assembly holes 41 of a second diameter. The assembly holes 41 of the first diameter and the assembly holes 41 of the second diameter are arranged alternately. The assembly holes 41 of the first diameter are used to assemble the lower end of the metal stent body 21 or sutures, while the assembly holes 41 of the second diameter are used to assemble the lower end of the metal stent body 21 or sutures. The diameter of the assembly holes 41 of the first diameter is greater than or equal to the diameter of the assembly holes 41 of the second diameter. In the present invention, the assembly holes 41 are divided into two categories: large-diameter holes and small-diameter holes. The large-diameter holes are used to assemble the lower end of the metal stent body 21, while the small-diameter holes are used to assemble sutures.

[0059] Example 2

[0060] Based on Example 1, in this example, a further preferred technical solution is proposed, such as Figure 1-Figure 5As shown, specifically: the length of the motor 9 in the axial direction is greater than the length of the axial flow channel 8 in the axial direction, and the motor 9 is divided into an upper half and a lower half. One end of the support rod is connected to the inner wall of the axial flow channel 8, so that the motor 9 is fixed on the axial flow channel 8; the other end of the support rod is connected to the outer wall of the upper half of the motor 9, so that the upper half of the motor 9 is located in the axial flow channel 8 and the lower half of the motor 9 is exposed outside the axial flow channel 8 and is located in the ventricle.

[0061] A further preferred technical solution is: the power part 12 also includes a power part 12 connected to one end of the motor 9, an impeller 13 is provided on the outer wall of the power part 12, an inner rotor 100 and an outer stator 101 are configured in the motor 9, one of the inner rotor 100 and the outer stator 101 includes a permanent magnet 17 and one of the inner rotor 100 and the outer stator 101 includes a winding coil, the inner rotor 100 is rotatably installed in the outer stator 101, and one end of the inner rotor 100 located in the axial flow channel 8 is connected to the power part 12, so that the inner rotor 100 rotates while driving the impeller 13 to rotate.

[0062] like Figure 1As shown, the close-range valve pump integrated ventricular assist circulation pump device 3 adopts a structural design that integrates the ventricular assist circulation pump device 3 and the ventricular assist circulation valve device. First, the ventricular assist circulation pump device is a heart blood pump with a series configuration, including an axial flow channel 8 and a power unit 12. The upper end of the axial flow channel 8 is provided with a radially outward flange portion 4, and the flange portion 4 faces the lower surface of the aortic valve or the pulmonary valve 5 and is connected to the aortic root or the pulmonary artery root 6, so that the heart blood pump and the channel in the cardiac artery tube 1 are connected in series; then The outer wall of the upper half of the motor 9 is fixedly connected to the inner wall of the axial flow channel 8 through a fixing bracket 14, and the lower half of the motor 9 is exposed outside the axial flow channel 8, presenting a stepped shape, forming a stepped heart blood pump, and the stepped heart blood pump is arranged in the ventricle 2 and below the aortic valve or the pulmonary valve 5. It can be seen that compared with the existing technology, the motor 9 of the present invention adopts a shortening technical means to set the motor 9 above the ventricle 2. The motor 9 does not pass through the ventricle 2, and will not cause damage to the ventricle 2 while reducing the difficulty of the operation. Then, an artificial valve is also provided on the ventricular assist circulation pump device 3 having the flange portion 4. The artificial valve 20 is fixed by a metal bracket body 21. The metal bracket body 21 is composed of longitudinal struts, and the lower end of the longitudinal struts is inserted into the assembly hole 41, so that the artificial valve is self-expanded and fixed above the root of the human heart valve of the cardiac artery tube. It is integrated with the ventricular assist circulation pump device 3 below, forming an integrated structure above and below the root of the human heart valve, thereby improving the overall support performance. Moreover, based on the structure of arranging the heart blood pump in the ventricle 2 and below the aortic valve or pulmonary valve 5, a stepped ventricular 2 assist circulation pump device is designed, and the stepped shape includes: the outer wall of the axial flow channel 8 and the outer wall of the lower half of the motor 9 form a decreasing step shape, and the outer wall of the power part 12 and the outer wall of the lower half of the motor 9 form an increasing step shape. Through the above two stepped designs, while forming a blood flow channel between the motor 9 and the axial flow channel 8, the blood pumping volume in the blood flow channel can be effectively increased.

[0063] Specifically, the outer wall of the axial flow channel 8 and the outer wall of the lower half of the motor 9 form a decreasing step shape mainly through a fixed bracket 14. In the present invention, the motor 9 adopts the configuration of an inner rotor 100 and an outer stator 101. One of the inner rotor 100 and the outer stator 101 includes a permanent magnet 17 and one of the rotor and the stator includes a winding coil. The inner rotor 100 refers to the motor 9 setting the rotor on the central axis, and the outer stator 101 refers to the motor 9 setting the stator outside the rotor. The inner rotor 100 is installed in the inner rotation of the outer stator 101, and the inner rotor 100 rotates in an axial manner. Based on the configuration of the motor 9, a fixed bracket 14 can be directly welded to the outer casing of the motor 9. The fixed bracket 14 is composed of a number of support rods. Figure 2 and Figure 3 It can be seen that the shape of the fixed bracket 14 is specifically a herringbone, which is composed of three support rods, one end of each support rod is welded to the inner wall of the axial flow channel 8, and the other end of each support rod is welded to the outer wall of the upper half of the motor 9, so that the upper half of the motor 9 is fixed in the axial flow channel 8, and the lower half of the motor 9 is exposed outside the axial flow channel 8. It can be seen that based on the fixed bracket 14 connected between the motor 9 and the axial flow channel 8, the diameter of the motor 9 is smaller than the diameter of the axial flow channel 8, so that the outer wall of the axial flow channel 8 and the outer wall of the lower half of the motor 9 form a decreasing step shape, then blood circulation can be formed between the motor 9 casing and the axial flow channel 8, and the size of the blood circulation can be adjusted by adjusting the length of the support rod or the diameter of the motor 9, so that the present invention can assist the heart to effectively pump blood while ensuring the stability of the motor 9.

[0064] Specifically, the outer wall of the power unit 12 and the outer wall of the lower half of the motor 9 form an increasing step shape. The motor 9 adopts the configuration of the inner rotor 100 and the outer stator 101, and on this basis, a power unit 12 is added to the motor 9. The power unit 12 is arranged in front of the motor 9, and an impeller 13 is arranged on the power unit 12. The rotation of the impeller 13 is achieved by the inner rotor 100 connected to the power unit 12, as shown in FIG. Figure 4 and Figure 5 As shown in , the front end of the inner rotor 100 faces the aortic valve or pulmonary valve 5, and the front end is connected to the power unit 12 and embedded in the interior of the power unit 12. When the inner rotor 100 rotates, it can drive the power unit 12 in front to rotate synchronously. The outer wall of the power unit 12 is provided with an impeller 13, and the blood in the blood flow channel is rotated by the impeller 13. It can be seen that on this basis, adding a power unit 12 to the motor 9 can reduce the relative distance between the blood flow channel of the motor 9 and the aortic valve or pulmonary valve 5, so that there is no obstruction between the motor 9 and the aortic valve or pulmonary valve 5. In addition, when the diameter of the power unit 12 is smaller than the diameter of the motor 9, the outer wall of the power unit 12 and the outer wall of the lower half of the motor 9 form an increasing step shape, which increases the diameter of the blood flow channel in the axial flow channel 8. The design of the stepped motor 9 increases the blood flow channel, which can effectively increase the blood pumping volume.

[0065] Among them, such as Figure 4As shown, the motor 9 is provided with a rotor located in the center and a stator located on the outside, i.e., an inner rotor 100 and an outer stator 101. A permanent magnet can be provided on the inner rotor 100, and a winding coil can be provided in the outer stator 101. The inner rotor 100 is driven to rotate in the axial direction through the interaction between the winding coil and the permanent magnet, thereby synchronously driving the impeller 13 on the outer wall of the power unit 12 to rotate, causing the blood in the blood flow channel to rotate, driving the blood upward to form pressure, and when the aortic valve or the pulmonary valve 5 opens, blood is ejected from the inside of the ventricle 2 into the cardiac artery 1.

[0066] A further preferred technical solution is: the motor 9 has a lead wire 7 for driving the motor 9 to supply energy, the lead wire 7 is led to the axial flow channel 8 through the inside of the support rod, and passes through the axial flow channel 8 to the outer wall of the axial flow channel 8, and then extends radially outward along the flange portion 4, and then led out from the aortic root or the pulmonary artery root 6.

[0067] like Figure 4-Figure 5 As shown, the lead wire 7 refers to a wire used to drive the motor 9 for power supply. The wire needs to be led out of the ventricular auxiliary circulation pump device 2 to realize the driving motor 9 to provide kinetic energy. When the lead wire 7 is led out from the motor 9, the lead wire 7 will enter the blood flow channel. If the routing of the lead wire 7 is not adjusted, the presence of the lead wire 7 in the blood flow channel will affect the amount of blood pumped out of the blood flow channel. For example, when there are more lead wires 7 in the blood flow channel, the lead wire 7 itself will block the pumping of blood in the blood flow channel. The lead wire 7 is combined with a fixed bracket 14 fixed to the motor 9. The fixed bracket 14 is composed of a tubular support rod. The support rod can be a hollow rod. The lead wire 7 led out from the motor 9 is embedded in the hollow rod so that the lead wire 7 is not directly routed in the blood flow channel, thereby avoiding blocking the outflow of blood in the blood flow channel and reducing the impact on blood outflow.

[0068] Furthermore, a new routing path is proposed for the lead wire 7, which can guide the lead wire 7 to be led out from the aortic root or the pulmonary artery root 6. Since the ventricular assist circulatory pump device adopts a flange portion 4 to achieve a series structure, the flange portion 4 adopts the principle of suturing with the aortic root or the pulmonary artery root 6. This principle is mainly based on the upper surface and / or lower surface of the flange portion 4 being pre-installed or temporarily assembled with a suture body through an assembly hole 41. The suture body on the upper surface is an upper suture body used for suturing with the lower surface of the aortic root or the pulmonary artery root 6 and for suturing with the circumferential annulus of the ventricular assist circulatory pump device. The circumferential annulus of the ventricular assist circulatory pump device is also used for suturing with the aortic root or the pulmonary artery root 6. The suture body located on the lower surface is a lower suture body used for suturing with the aortic root or the pulmonary artery root 6. The lead wire 7 passes through the suture body located on the lower surface and passes through the aortic root or the pulmonary artery root 6.

[0069] A further preferred technical solution is: a temperature sensor 19 is attached around the inside of the motor 9 , a pressure sensor 18 is fixedly provided on the inner wall of the axial flow channel 8 , and the wires of the temperature sensor 19 and the pressure sensor 18 are bundled with the lead wire 7 .

[0070] like Figure 5 As shown, corresponding temperature sensors 19 and pressure sensors 18 are also provided for the ventricular auxiliary circulation pump device 2. Based on the routing direction of the lead wire 7, the temperature sensor 19 is pasted around the motor 9 to facilitate bundling the wires of the temperature sensor 19 with the lead wire 7 at the motor 9, thereby reducing the influence of the wires of the temperature sensor 19 on the blood circulation in the blood flow channel. In addition, the temperature of the motor 9 can be monitored in real time through the temperature sensor 19. When the temperature exceeds the limit value, an alarm can be sounded, thereby avoiding the device from being in long-term high-temperature operation and effectively extending the service life of the device.

[0071] At the same time, a groove is defined within the axial flow channel 8, housing pressure sensors 18 at either end. One pressure sensor 18 is located near the aortic or pulmonary valve 5, and the other near the ventricle 2. In other words, the pressure sensors 18 are mounted at the entrance and exit of the blood flow channel, respectively, allowing the rotational speed of the inner rotor 100 to be adjusted based on pressure changes. Furthermore, the grooves housing the pressure sensors 18 extend toward the lead wires 7, facilitating bundling the lead wires of the pressure sensors 18 within the grooves with the lead wires 7, thereby minimizing the impact of the pressure sensor 18 wires on blood flow within the blood flow channel.

[0072] Example 3

[0073] Based on Example 1, in this example, a further preferred technical solution is proposed, such as Figures 6-10 As shown, specifically: the length of the motor 9 in the axial direction is less than or equal to the length of the axial flow channel 8 in the axial direction, the upper and lower ends of the axial flow channel 8 are respectively provided with fixed brackets 14, one end of the support rod is connected to the upper or lower end of the axial flow channel 8, and the other end of the support rod is connected to one end of the inner stator 111, so that the motor 9 is fixed on the axial flow channel 8 and is located in the axial flow channel 8.

[0074] like Figure 6As shown, the close-range valve pump integrated ventricular assist circulation pump device 3 adopts a structural design that integrates a ventricular assist circulation pump device 3 and a ventricular assist circulation valve device. First, the ventricular assist circulation pump device adopts a series configuration and is located in the cardiac artery tube 1. The ventricular assist circulation pump device includes an axial flow channel 8 and a motor 9. The length of the motor 9 in the axial direction is less than or equal to the length of the axial flow channel 8 in the axial direction. The motor 9 is embedded in the axial flow channel 8, and the motor 9 is arranged in the ventricle 2 and below the aortic valve or pulmonary valve 5. When the driving motor 9 provides kinetic energy, a blood flow channel is formed between the motor 9 and the axial flow channel 8, the aortic valve or pulmonary valve 5 above the flange portion 4 opens, and blood flows from the ventricle 2 into the artery. With respect to the existing technology, the motor 9 is first shortened to the top of the ventricle 2, so that the motor 9 does not need to pass through the ventricle 2 during the heart blood pump operation, which will not cause damage to the ventricle 2 and reduce the difficulty of the operation; on this basis, the motor 9 is set below the aortic valve or pulmonary valve 5 to avoid the size of the motor 9 itself from blocking the blood circulation process. Then, an artificial valve is also provided on the ventricular assist circulation pump device 3 with a flange portion 4. The artificial valve 20 is fixed by a metal bracket body 21. The metal bracket body 21 is composed of a longitudinal pillar, and the lower end of the longitudinal pillar is inserted into the assembly hole 41, so that the artificial valve is self-expanded and fixed above the root of the human heart valve of the cardiac artery tube. It is integrated with the ventricular assist circulation pump device 3 below, forming an integrated structure above and below the root of the human heart valve, and the overall support performance is improved; a further preferred technical solution is: the length of the motor 9 in the axial direction is less than or equal to the length of the axial flow channel 8 in the axial direction, and the upper and lower ends of the axial flow channel 8 are respectively provided with fixed brackets 14, one end of the support rod is connected to the upper end or lower end of the axial flow channel 8, and the other end of the support rod is connected to one end of the inner stator 111, so that the motor 9 is fixed on the axial flow channel 8 and is located in the axial flow channel 8.

[0075] A further preferred technical solution is: an outer rotor 110 and an inner stator 111 are configured in the motor 9, one of the outer rotor 110 and the inner stator 111 includes a permanent magnet 17 and one of the rotor and the stator includes a winding coil, and the outer rotor 110 is rotatably mounted outside the inner stator 111, and the outer rotor 110 serves as the outer shell of the motor 9. An impeller 13 is provided on the outer wall of the outer shell, so that the outer rotor 110 rotates while driving the impeller 13 to rotate.

[0076] Among them, such as Figure 8As shown, the motor 9 is configured with a stator located in the center and a rotor located on the outside, namely an inner stator 111 and an outer rotor 110. A winding coil can be set on the inner stator 111, and a permanent magnet can be set on the outer rotor 110. Through the interaction generated by the winding coil and the permanent magnet, the outer rotor 110 is driven to rotate with the inner stator 111 as the central axis, thereby driving the impeller 13 on the outer wall of the outer rotor 110 to rotate, causing the blood in the blood flow channel to rotate, driving the blood upward to form pressure. When the aortic valve or the pulmonary valve 5 opens, blood is ejected from the inside of the ventricle 2 into the cardiac artery 1.

[0077] In this embodiment, the size of the auxiliary circulation pump device of the ventricle 2 can be reduced while the rotation of the blood in the channel is realized. The motor 9 adopts the configuration of the inner stator 111 and the outer rotor 110. The inner stator 111 refers to the motor 9 using the stator as the central axis, and the outer rotor 110 refers to the motor 9 setting the rotor outside the stator. One of the stator and the rotor includes a permanent magnet 17 and one of the rotor and the stator includes a winding coil. When the rotor located on the outside rotates, the impeller 13 can be directly set on the outer wall of the rotor. When the rotor rotates, the impeller 13 is driven to rotate. Specifically, the inner stator 111 and the outer rotor 110 are set in the axial flow channel 8 using fixed brackets 14 at the front and rear ends. The fixed bracket 14 is composed of a number of tubular support rods. Figure 6 and Figure 7 As can be seen in the figure, the shape of the fixed bracket 14 is specifically a herringbone shape, consisting of three support rods, one end of which is welded to the inner wall of the axial flow channel 8, and the other ends of the three support rods are welded together to form a small disc. The side of the small disc facing the inside of the axial flow channel 8 is connected to the inner stator 111, which has strong stability and realizes a fixed connection between the motor 9 and the inner wall of the axial flow channel 8. When the driving motor 9 provides kinetic energy, since the inner stator 111 is fixedly connected to the axial flow channel 8 through the fixed brackets 14 on both sides, a blood flow channel will be formed between the outer rotor 110 and the axial flow channel 8. The outer rotor 110 drives the impeller 13 located in the blood flow channel to rotate, and the blood rotates through the blood flow channel. At this time, the aortic valve or pulmonary valve 5 above the flange portion 4 opens, and blood flows from the ventricle 2 into the artery.

[0078] A further preferred technical solution is: the motor 9 has a lead wire 7 for driving the motor 9 to supply energy, the lead wire 7 is led to the axial flow channel 8 through the inside of the support rod, and passes through the axial flow channel 8 to the outer wall of the axial flow channel 8, and then extends radially outward along the flange portion 4, and then led out from the aortic root or the pulmonary artery root 6.

[0079] The lead wire 7 refers to a wire used to drive the motor 9 for power supply. The wire needs to be led out of the ventricular auxiliary circulation pump device 2 to realize the drive motor 9 to provide kinetic energy. When the lead wire 7 is led out from the motor 9, the lead wire 7 will enter the blood flow channel. If the routing of the lead wire 7 is not adjusted, the presence of the lead wire 7 in the blood flow channel will affect the amount of blood pumped out of the blood flow channel. For example, when there are more lead wires 7 in the blood flow channel, the lead wire 7 itself will block the pumping of blood in the blood flow channel. Figure 8 and Figure 9 As shown, the lead wire 7 is combined with a fixed bracket 14 for fixing the motor 9. The fixed bracket 14 is composed of a tubular support rod, and the support rod can be a hollow rod. The lead wire 7 led out from the motor 9 is embedded in the hollow rod, so that the lead wire 7 is not directly routed in the blood flow channel, avoiding blocking the blood outflow in the blood flow channel and reducing the impact on blood outflow.

[0080] Furthermore, it is proposed that the lead wire 7 be led out from the aortic root or the pulmonary artery root 6. Since the ventricular 2 auxiliary circulation pump device adopts a series structure using a flange portion 4, and the flange portion 4 adopts the principle of suturing with the aortic root or the pulmonary artery root 6, this principle is mainly based on the upper surface or / and lower surface of the flange portion 4 being pre-installed or temporarily assembled with a suture body through an assembly hole 41. The suture body on the upper surface is an upper suture body used for suturing with the lower surface of the aortic root or the pulmonary artery root 6 and for suturing with the circumferential annulus of the ventricular 2 auxiliary circulation pump device. The circumferential annulus is provided on the outer wall of the ventricular 2 auxiliary circulation pump device. When the lead wire 7 extends outward in the radial direction of the flange portion 4, it can pass through the circumferential annulus. While the lead wire 7 is fixed by the circumferential annulus, the lead wire 7 can be guided to be led out from the aortic root or the pulmonary artery root 6.

[0081] A further preferred technical solution is: a temperature sensor 19 is attached around the inside of the motor 9 , a pressure sensor 18 is fixedly provided on the inner wall of the axial flow channel 8 , and the wires of the temperature sensor 19 and the pressure sensor 18 are bundled with the lead wire 7 .

[0082] like Figure 10 As shown, corresponding temperature sensors 19 and pressure sensors 18 are also provided for the ventricular auxiliary circulation pump device 2. Based on the routing direction of the lead wire 7, the temperature sensor 19 is pasted around the motor 9 to facilitate bundling the wires of the temperature sensor 19 with the lead wire 7 at the motor 9, thereby reducing the influence of the wires of the temperature sensor 19 on the blood circulation in the blood flow channel. In addition, the temperature of the motor 9 can be monitored in real time through the temperature sensor 19. When the temperature exceeds the limit value, an alarm can be sounded, thereby avoiding the device from being in long-term high-temperature operation and effectively extending the service life of the device.

[0083] At the same time, a groove is defined within the axial flow channel 8, housing pressure sensors 18 at either end. One pressure sensor 18 is located near the aortic or pulmonary valve 5, and the other near the ventricle 2. In other words, the pressure sensors 18 are mounted at the entrance and exit of the blood flow channel, respectively, allowing the rotational speed of the inner rotor 100 to be adjusted based on pressure changes. Furthermore, the grooves housing the pressure sensors 18 extend toward the lead wires 7, facilitating bundling the lead wires of the pressure sensors 18 within the grooves with the lead wires 7, thereby minimizing the impact of the pressure sensor 18 wires on blood flow within the blood flow channel.

[0084] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Based on the technical essence of the present invention and within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement of the above embodiment shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A close-range valve pump integrated ventricular assist circulation pump device, characterized in that: include: A ventricular assist circulation pump device (3), wherein the ventricular assist circulation pump device (3) is connected in series with the cardiac artery tube (1), and the ventricular assist circulation pump device (3) is arranged in the ventricle (2) and below the aortic valve or the pulmonary valve (5); The ventricular assist circulation pump device (3) comprises an axial flow channel (8) and a power unit (12) located in the axial flow channel (8); The upper end of the axial flow channel (8) is provided with a radially outward flange portion (4), the flange portion (4) faces the lower surface of the aortic valve or the pulmonary valve (5) and is sutured to the aortic root or the pulmonary artery root (6), the flange portion (4) serves as a mounting plane, the power unit (12) has an impeller (13) that rotates in the axial direction of the axial flow channel (8), and the outlet plane of the impeller (13) is the same plane as the plane where the flange portion (4) is located, providing the aortic valve or the pulmonary valve (5) with a maximum pressure directly adjacent to the ventricular assist circulation pump device (3); The power unit (12) includes a motor (9), and a fixed bracket (14) is further provided between the motor (9) and the axial flow channel (8). The fixed bracket (14) includes at least one tubular support rod, which is a hollow rod. One end of the support rod is connected to the motor (9), and the other end of the support rod is connected to the axial flow channel (8). The motor (9) has a lead wire (7) for driving the motor (9) to supply energy. The lead wire (7) is led to the axial flow channel (8) through the interior of the support rod, and passes through the axial flow channel (8) to the outer wall of the axial flow channel (8), and then extends outward along the radial direction of the flange portion (4) until it is led out from the aortic root or the pulmonary artery root (6).

2. The close-range valve pump integrated ventricular assist circulation pump device according to claim 1, characterized in that: The axial direction of the motor (9) is the same as the axial direction of the axial flow channel (8), the upper end of the motor (9) faces the lower surface of the aortic valve or the pulmonary valve (5), and the lower end of the motor (9) faces the ventricle (2). The motor (9) is provided with a rotor and a stator, one of the rotor and the stator includes a permanent magnet (17) and one of the rotor and the stator includes a winding coil, and the impeller (13) is driven to rotate in the axial direction through the interaction between the rotor and the stator.

3. The close-range valve pump integrated ventricular assist circulation pump device according to claim 2, characterized in that: A fixed connection between the motor (9) and the axial flow channel (8) is achieved through the fixing bracket (14), so that a blood flow channel is formed between the motor (9) and the axial flow channel (8).

4. The close-range valve pump integrated ventricular assist circulation pump device according to claim 3, characterized in that: The length of the motor (9) in the axial direction is greater than the length of the axial flow channel (8) in the axial direction, and the motor (9) is divided into an upper half and a lower half. One end of the support rod is connected to the inner wall of the axial flow channel (8), so that the motor (9) is fixed to the axial flow channel (8); the other end of the support rod is connected to the outer wall of the upper half of the motor (9), so that the upper half of the motor (9) is located in the axial flow channel (8) and the lower half of the motor (9) is exposed outside the axial flow channel (8) and is located in the ventricle.

5. The close-range valve pump integrated ventricular assist circulation pump device according to claim 4, characterized in that: The power unit (12) further includes a power unit (12) connected to one end of the motor (9), an impeller (13) is provided on the outer wall of the power unit (12), an inner rotor (100) and an outer stator (101) are configured in the motor (9), one of the inner rotor (100) and the outer stator (101) includes a permanent magnet (17), and one of the inner rotor (100) and the outer stator (101) includes a winding coil, the inner rotor (100) is rotatably mounted in the outer stator (101), and one end of the inner rotor (100) located in the axial flow channel (8) is connected to the power unit (12), so that the inner rotor (100) rotates while driving the impeller (13) to rotate.

6. The close-range valve pump integrated ventricular assist circulation pump device according to claim 3, characterized in that: The length of the motor (9) in the axial direction is less than or equal to the length of the axial flow channel (8) in the axial direction, and a fixing bracket (14) is respectively provided at the upper end and the lower end of the axial flow channel (8), one end of the support rod is connected to the upper end or the lower end of the axial flow channel (8), and the other end of the support rod is connected to one end of the inner stator (111), so that the motor (9) is fixed on the axial flow channel (8) and located in the axial flow channel (8).

7. The close-range valve pump integrated ventricular assist circulation pump device according to claim 6, characterized in that: The motor (9) is provided with an outer rotor (110) and an inner stator (111), one of the outer rotor (110) and the inner stator (111) includes a permanent magnet (17), and one of the rotor and the stator includes a winding coil, the inner stator (111) is rotatably mounted with the outer rotor (110), and the outer rotor (110) serves as the outer shell of the motor (9). An impeller (13) is provided on the outer wall of the outer shell, so that the outer rotor (110) rotates while driving the impeller (13) to rotate.

8. The close-range valve pump integrated ventricular assist circulation pump device according to claim 1, characterized in that: A temperature sensor (19) is provided in the motor (9), and a pressure sensor (18) is fixedly provided on the inner wall of the axial flow channel (8). The wires of the temperature sensor (19) and the pressure sensor (18) are bundled with the lead wire (7).

9. The close-range valve pump integrated ventricular assist circulation pump device according to any one of claims 3 to 7, characterized in that: It also includes a ventricular assist circulation valve device; the ventricular assist circulation valve device is arranged on the flange portion (4), and the ventricular assist circulation valve device is assembled, contacted, and fixed to the flange portion (4).

10. The close-range valve pump integrated ventricular assist circulation pump device according to claim 9, characterized in that: The ventricular assist valve device has a tubular metal stent body (20), and the metal stent body (20) includes a plurality of longitudinal struts; the lower ends of the longitudinal struts are assembled, contacted, and fixed to the flange portion (4).

11. The close-range valve pump integrated ventricular assist circulation pump device according to claim 10, characterized in that: The lower end of the longitudinal support is directly welded to the upper surface of the flange portion (4).

12. The close-range valve pump integrated ventricular assist circulation pump device according to claim 10, characterized in that: The flange portion (4) is provided with a plurality of assembly holes (41), the axial direction of the assembly holes (41) is the same as the axial direction of the axial flow channel (8), and the lower ends of the longitudinal struts are inserted into the assembly holes (41).

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