A ventricular assist circulation pump device with lead wire passing through suture body

Abstract

The present invention provides a ventricular assist circulation pump device with a lead wire passing through a suture body, which relates to the technical field of cardiac blood pumps. A cardiac blood pump is connected in series with a cardiac artery tube, and the cardiac blood pump is suspended in the ventricle and below the aortic valve or the pulmonary valve by suturing between a flange portion and the root of the aorta or the pulmonary artery. On this basis, the lead wire of the cardiac blood pump is led to the suture body, so that the lead wire passes through the suture body and is led out to the outer wall of the cardiac artery tube. This is more advantageous for the convenience of suturing operation, the safety of subsequent use, and the suture area, and can reduce damage to the cardiac artery tube.

Description

Technical Field

[0001] The present invention relates to the technical field of cardiac blood pumps, in particular to a ventricular assist circulation pump device with a lead-out line passing through a suture body. Background Art

[0002] The heart blood pump is an important auxiliary tool for blood circulation in the ventricles. Currently, 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. For example, patent CN117379681A is a heart blood pump with a serial configuration. However, the heart blood pump with a serial configuration places the motor outside the ventricle, which means that the heart blood pump needs to pass through the ventricle via a support rod, increasing the difficulty of the operation. Patent CN117427268A is also a heart blood pump with a serial configuration. In order to solve the above technical problem, the motor of the heart blood pump is placed inside the ventricle. However, the motor is located above the aortic valve or the pulmonary valve. During the heart blood circulation, the aortic valve or the pulmonary valve is not open to a large extent. The size of the motor itself will affect the current heart blood circulation. In addition, the wires of the motor in this patent are drawn out from the inner wall of the heart artery tube, causing damage to the heart artery tube. In summary, how to reduce the damage to the heart artery tube during the implantation of the heart blood pump and at the same time ensure that the kinetic energy provided by the heart blood pump can meet the blood pressure requirements of the patient are the technical problems to be solved by the present invention. Summary of the Invention

[0003] The purpose of the present invention is to provide a ventricular assist circulation pump device with a lead wire passing through a suture body, which mainly adopts a cardiac blood pump connected in series with a cardiac artery tube. The cardiac blood pump is suspended in the ventricle and below the aortic valve or pulmonary valve by suturing between the flange part and the root of the aorta or pulmonary artery. On this basis, the lead wire of the cardiac blood pump is led to the suture body, so that the lead wire passes through the suture body and is led out to the outer wall of the cardiac artery tube.

[0004] In order to solve the above technical problems, the present invention adopts the following solutions:

[0005] A ventricular assist circulation pump device with a lead wire passing through a suture body includes: a heart blood pump connected in series with a heart artery tube, the heart blood pump includes a motor housing, an axial flow channel shell coaxially sleeved on the outside of the motor housing, the upper end of the axial flow channel shell is provided with a radially outward flange portion, the upper surface of the flange portion faces the lower surface of the aortic valve or the pulmonary valve and is sutured with the root of the aorta or the pulmonary artery, a lead wire is led out on the circumferential outer wall of the axial flow channel shell, the lead wire is close to the lower surface of the flange portion along the axial direction of the axial flow channel shell on the circumferential outer wall, and the lead wire passes through the root of the aorta or the pulmonary artery along the radial direction of the flange portion.

[0006] A further preferred technical solution is: the upper surface and / or lower surface of the flange part is pre-installed or temporarily assembled with a suture body, the suture body located on the upper surface is an upper suture body used for suturing with the lower surface of the aorta or pulmonary artery root or for suturing with the circumferential annulus of the cardiac blood pump, the circumferential annulus of the cardiac blood pump is also used for suturing with the aorta or pulmonary artery root, the suture body located on the lower surface is a lower suture body used for suturing with the aorta or pulmonary artery root, and the lead wire passes through the suture body located on the lower surface and through the aorta or pulmonary artery root.

[0007] A further preferred technical solution is that the lead wire is led out from the motor housing, extends between the motor housing and the axial flow channel shell, passes through the axial flow channel shell, and is led out from the circumferential outer wall of the axial flow channel shell.

[0008] A further preferred technical solution is: a fixed bracket is also provided between the axial flow channel shell and the motor housing, and the fixed bracket includes at least one tubular support rod, one end of the support rod is connected to the motor housing, and the other end of the support rod is connected to the axial flow channel shell, and the lead wire led out from the motor housing extends between the motor housing and the axial flow channel shell through the inside of the support rod, and passes through the axial flow channel shell.

[0009] A further preferred technical solution is: a stator and a rotor are coaxially arranged in the motor housing, one of the rotor and the stator includes a permanent magnet and one of the rotor and the stator includes a winding coil, and a lead wire is connected to the stator, and the lead wire passes through the inside of the stator and the support rod to pass through the axial flow channel shell.

[0010] A further preferred technical solution is: a temperature sensor is provided in the motor housing, a pressure sensor is provided on the inner wall of the axial flow channel housing, and the wires and lead wires of the temperature sensor and the pressure sensor are bundled.

[0011] A further preferred technical solution is: an inner stator and an outer rotor rotatably mounted outside the inner stator are coaxially arranged in the motor housing, both ends of the inner stator are fixed to the axial flow channel shell through support rods, a lead wire is connected to the inner stator, and a temperature sensor is pasted around the outer wall of the inner stator, and the lead wire is led to the axial flow channel shell through the inner stator, the outer rotor, and the interior of the support rod.

[0012] A further preferred technical solution is: an inner rotor and an outer stator rotatably mounted outside the inner rotor are coaxially arranged in the motor housing, the outer wall of the outer stator is fixed to the axial flow channel shell through a support rod, a lead wire is connected to the outer stator, and a temperature sensor is pasted around the inner wall of the outer stator, and the lead wire is led to the axial flow channel shell through the inner wall of the outer stator and the support rod.

[0013] A further preferred technical solution is: a plurality of assembly holes are provided on the flange portion, the axial direction of the assembly holes is the same as the axial direction of the axial flow channel shell, so that the upper surface and / or lower surface of the flange portion are pre-installed or temporarily assembled with a suture body through the assembly holes.

[0014] A further preferred technical solution is that the suture body is an annular medical polyester braid or an annular polytetrafluoroethylene braid or an annular artificial blood vessel.

[0015] Beneficial effects of the present invention:

[0016] The present invention provides a ventricular assist circulation pump device with a lead wire passing through a suture body. The cardiac blood pump proposes a structure based on a series configuration in which the cardiac blood pump is arranged in the ventricle and below the aortic valve or the 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 and reduce the difficulty of the operation.

[0017] In a structure in which the cardiac blood pump is arranged in the ventricle and below the aortic valve or the pulmonary valve, the cardiac blood pump is sutured to the root of the aorta or the pulmonary artery using a flange portion. On this basis, the lead wire drawn from the inner wall of the cardiac artery tube in the prior art is changed to a lead wire drawn from the root of the aorta or the pulmonary artery. Since the root of the aorta or the pulmonary artery has greater toughness and can carry a heavier device, it is more beneficial to the convenience of the suturing operation, the safety of subsequent use, and the suturing area, and can reduce damage to the cardiac artery tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the path of the lead wires led out from the axial flow channel housing in Example 1 of the present invention;

[0019] Figure 2 Schematic diagram of the path of the lead wires led out from the motor housing in Example 1 of the present invention;

[0020] Figure 3 This is a schematic structural diagram of a cardiac blood pump connected in series with a cardiac artery tube in Example 2 of the present invention;

[0021] Figure 4 1 is a left side structural schematic diagram of a cardiac blood pump in Example 2 of the present invention;

[0022] Figure 5 2 is a schematic diagram of the right side structure of the heart blood pump in Example 2 of the present invention;

[0023] Figure 6 Schematic diagram of the cross-sectional structure of the cardiac blood pump in Example 2 of the present invention;

[0024] Figure 7 This is a schematic diagram of the arrangement of the temperature sensor and the pressure sensor in Example 2 of the present invention;

[0025] Figure 8 This is a schematic structural diagram of the cardiac blood pump and the cardiac artery tube connected in series in Example 3 of the present invention;

[0026] Figure 9 1 is a left side structural schematic diagram of a cardiac blood pump in Example 3 of the present invention;

[0027] Figure 10 2 is a schematic diagram of the right side structure of the heart blood pump in Example 3 of the present invention;

[0028] Figure 11 Schematic diagram of the cross-sectional structure of the cardiac blood pump in Example 3 of the present invention;

[0029] Figure 12 This is a schematic diagram of the arrangement of the temperature sensor and the pressure sensor in Example 3 of the present invention;

[0030] Explanation of the accompanying drawings: 1-heart artery tube, 2-ventricle, 3-aortic valve or pulmonary valve, 31-aorta or pulmonary artery root, 4-heart blood pump, 5-flanged portion, 51-assembly hole, 6-axial flow channel shell, 7-motor housing, 81-inner stator, 82-outer rotor, 91-outer stator, 92-inner rotor, 101-upper suture, 102-lower suture, 11-lead wire, 12-fixed bracket, 13-bearing, 14-impeller, 15-winding coil, 16-permanent magnet, 17-pressure sensor, 18-temperature sensor, 19-rotating part. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments:

[0038] Example 1

[0039] like Figure 1-Figure 2 As shown, a ventricular 2 auxiliary circulation pump device with a lead wire 11 passing through a suture body includes: a cardiac blood pump 4 connected in series with a cardiac artery tube 1, the cardiac blood pump 4 includes a motor housing 7, an axial flow channel shell 6 coaxially sleeved on the outside of the motor housing 7, the upper end of the axial flow channel shell 6 is provided with a radially outward flange portion 5, the upper surface of the flange portion 5 faces the lower surface of the aortic valve or the pulmonary valve 3 and is sutured with the aorta or pulmonary artery root 31, a lead wire 11 is led out from the circumferential outer wall of the axial flow channel shell 6, the lead wire 11 is close to the lower surface of the flange portion 5 along the axial direction of the axial flow channel shell 6 on the circumferential outer wall, and the lead wire 11 passes through the aorta or pulmonary artery root 31 along the radial direction of the flange portion 5.

[0040] A further preferred technical solution is: the upper surface and / or lower surface of the flange portion 5 is pre-installed or temporarily assembled with a suture body, the suture body located on the upper surface is an upper suture body 101 for suturing with the lower surface of the aorta or pulmonary artery root 31 or for suturing with the circumferential annulus of the cardiac blood pump 4, the circumferential annulus of the cardiac blood pump 4 is also used for suturing with the aorta or pulmonary artery root 31, the suture body located on the lower surface is a lower suture body 102 for suturing with the aorta or pulmonary artery root 31, and the lead wire 11 passes through the suture body located on the lower surface and passes through the aorta or pulmonary artery root 31.

[0041] A further preferred technical solution is: a plurality of assembly holes 51 are provided on the flanging portion 5, and the axial direction of the assembly hole 51 is the same as the axial direction of the axial flow channel shell 6, so that the upper surface and / or lower surface of the flanging portion 5 is pre-installed or temporarily assembled with a suture body through the assembly hole 51.

[0042] A further preferred technical solution is that the suture body is an annular medical polyester braid or an annular polytetrafluoroethylene braid or an annular artificial blood vessel.

[0043] Based on the above principles, this embodiment is further elaborated: First, the cardiac blood pump 4 is proposed to be arranged within the ventricle 2 and below the aortic valve or pulmonary valve 3 based on a series configuration. Specifically, the series configuration refers to the cardiac blood pump 4 being arranged in series with the cardiac artery tube 1. On this basis, the motor is shortened by a technical means so that the motor is shortened to within the ventricle 2. The motor does not need to be connected via a support rod passing through the ventricle 2. This ensures that the cardiac blood pump 4 will not cause damage to the ventricle 2 during implantation, while reducing the difficulty of the operation. The motor is also arranged below the aortic valve or pulmonary valve 3. Compared with the existing technology, this can reduce the impact of the motor's own volume on blood circulation, prevent the motor from blocking the blood pumping volume above the aortic valve or pulmonary valve 3, and ensure that the kinetic energy provided by the cardiac blood pump 4 can meet the patient's required blood pressure.

[0044] The cardiac blood pump 4 then utilizes a flanging process. The outer diameter of the axial flow channel housing 6 is approximately equal to that of the cardiac artery tube 1. A flanging process is employed at the upper end of the axial flow channel housing 6 to form a flanging portion 5. The flanging portion 5 should not be too wide; it can be formed to the dimensions of the upper and lower axes. The flanging portion 5 can be a horizontal, straight, or curved flange. Sutures are provided on at least one of the upper and lower surfaces of the flanging portion as a medium for suture connection to the aorta or pulmonary artery root 31 and / or the cardiac artery tube 1 using sutures. The assembly hole 51 is also used for the passage of the sutures.

[0045] It can be seen that the present invention uses the aorta or pulmonary artery root 31 to suspend the cardiac blood pump 4. The aorta or pulmonary artery root 31 is the root part of the heart valve, which is generally perpendicular to the cardiac artery tube 1 and grows horizontally, and is relatively thick. The aorta or pulmonary artery root 31 has stronger toughness and can carry heavier devices, which is more beneficial for the convenience of suturing operation, subsequent safety, and suturing area. Compared with the method of directly suturing the cardiac blood pump 4 to the inner wall of the cardiac artery tube 1 in the prior art, suturing the cardiac blood pump 4 to the aorta or pulmonary artery root 31 causes less damage to the cardiac artery tube 1. Among them, the sutures in the present invention all use vertical sutures, which will not appear on the inner wall of the axial flow channel, and can avoid the risk of thrombosis.

[0046] Specifically, the upper surface and / or lower surface of the flange portion 5 are pre-installed or temporarily assembled with a suture body. The suture body located on the upper surface is an upper suture body 101 used for suturing with the lower surface of the aorta or pulmonary artery root 31 or for suturing with the circumferential annular membrane of the cardiac blood pump 4. The circumferential annular membrane of the cardiac blood pump 4 is also used for suturing with the aorta or pulmonary artery root 31. The suture body located on the lower surface is a lower suture body 102 used for suturing with the inner surface of the cardiac artery tube 1.

[0047] The suture body includes a lower suture body 102 and an upper suture body 101, wherein the lower suture body 102, the cuff portion 5, and the upper suture body 101 are stacked up and down to form a stacked assembly. The aorta or pulmonary artery root 31 is also a horizontal human tissue structure. The aorta or pulmonary artery root 31, the lower suture body 102, the cuff portion 5, and the upper suture body 101 are stacked up and down to form a stacked assembly. The assembly is in a hanging mode, with the cuff portion 5 being embedded in the stacked assembly. The upper suture body 101 and / or the lower suture body 102 are pre-installed or temporarily assembled on the upper and / or lower sides of the cuff portion 5 by passing the suture through the assembly hole 51.

[0048] Therefore, the present invention is based on a series configuration in which the heart blood pump 4 is suspended in the ventricle 2 and above the aortic valve or pulmonary valve 3 by suturing the flange portion 5 with the aorta or pulmonary artery root 31, and proposes a new path for the lead wire 11. The lead wire 11 generally refers to a wire connected to the motor for driving the motor to supply energy. In this embodiment, the lead wire 11 can be a wire connected to the motor for driving the motor to supply energy, or it can be a lead wire 11 led out from the axial flow channel shell 6. The lead wire 11 can be a wire of the motor located in the axial flow channel shell 6, or it can be a wire of other equipment located in the axial flow channel shell 6. Then, the lead wire 11 is all led out from the axial flow channel shell 6.

[0049] like Figure 1As shown, when the cardiac blood pump 4 adopts the above-mentioned structure, the flange portion 5 of the cardiac blood pump 4 is sutured with the aorta or pulmonary artery root 31 through the upper and lower suture bodies 102. At this time, a lead wire 11 is connected to the circumferential outer wall of the axial flow channel shell 6. First, the lead wire 11 is placed on the circumferential outer wall along the axial direction of the axial flow channel shell 6 close to the lower surface of the flange portion 5, so that the lead wire 11 is tightly attached to the outer wall of the axial flow channel shell 6 and extends toward the lower surface of the flange portion 5. This can reduce the influence of the lead wire 11 on the blood flow channel and make the wiring regular. Then, when the lead wire 11 approaches the lower surface of the flange portion 5, the lead wire 11 is bent so that it is closely attached to the lower surface of the flange portion 5 and extends in the radial direction of the flange portion 5. The lower surface of the flange portion 5 can guide the lead wire 11, guiding the lead wire 11 to pass through the aorta or pulmonary artery root 31, so that the lead wire 11 is led out from the aorta or pulmonary artery root 31 to the outer wall of the cardiac artery tube 1. Compared with the prior art, the damage to the cardiac artery tube 1 can be reduced. In addition, during the process of the lead wire 11 being closely attached to the lower surface of the flange portion 5 and extending in the radial direction of the flange portion 5, the lead wire 11 is extended in the lower suture 102. The lower suture 102 can fix the routing direction of the lead wire 11, making it easier for the lead wire 11 to pass through the aorta or pulmonary artery root 31.

[0050] A further preferred technical solution is: the lead wire 11 is led out from the motor housing 7 , extends between the motor housing 7 and the axial flow channel shell 6 , passes through the axial flow channel shell 6 , and is led out from the circumferential outer wall of the axial flow channel shell 6 .

[0051] like Figure 2 As shown, the lead wire 11 refers to a wire connected to the motor for driving the motor to supply energy, and the lead wire 11 is first led out from the motor housing 7, and the lead wire 11 on the motor housing 7 is passed through the axial flow channel shell 6 so that it is led out from the circumferential outer wall of the axial flow channel shell 6. Then, the lead wire 11 is on the circumferential outer wall along the axial direction of the axial flow channel shell 6 close to the lower surface of the flange portion 5, and the lead wire 11 passes through the aorta or pulmonary artery root 31 along the radial direction of the flange portion 5.

[0052] A further preferred technical solution is: a fixed bracket 12 is also provided between the axial flow channel shell 6 and the motor housing 7, and the fixed bracket 12 includes at least one tubular support rod, one end of the support rod is connected to the motor housing 7, and the other end of the support rod is connected to the axial flow channel shell 6, and the lead wire 11 led out from the motor housing 7 extends between the motor housing 7 and the axial flow channel shell 6 through the inside of the support rod, and passes through the axial flow channel shell 6.

[0053] Specifically, the lead-out path of the lead-out wire 11 is: leading out from the motor housing 7 - passing through the inside of the support rod - leading to the outer wall of the axial flow channel shell 6 - on the circumferential outer wall along the axial direction of the axial flow channel shell 6 close to the lower surface of the flange portion 5 - bending - passing through the aorta or pulmonary artery root 31 along the radial direction of the flange portion 5.

[0054] A further preferred technical solution is: a stator and a rotor are coaxially arranged in the motor housing 7, one of the rotor and the stator includes a permanent magnet 16 and one of the rotor and the stator includes a winding coil, and a lead wire 11 is connected to the stator, and the lead wire 11 passes through the inside of the stator and the support rod to pass through the axial flow channel shell 6.

[0055] Specifically, the lead-out path of the lead-out wire 11 is: leading out from the stator - passing through the motor housing 7 - passing through the inside of the support rod - leading to the outer wall of the axial flow channel shell 6 - on the circumferential outer wall along the axial direction of the axial flow channel shell 6 close to the lower surface of the flange part 5 - bending - passing through the aorta or pulmonary artery root 31 along the radial direction of the flange part 5.

[0056] A further preferred technical solution is: a temperature sensor 18 is provided in the motor housing 7 , a pressure sensor 17 is provided on the inner wall of the axial flow channel housing 6 , and the wires of the temperature sensor 18 and the pressure sensor 17 are bundled with the lead wire 11 .

[0057] Example 2

[0058] Based on the embodiment 1, a cardiac blood pump 4 adopting a new path for the lead wire 11 is proposed in this embodiment, such as Figure 3-Figure 7 As shown, a further preferred technical solution is: an inner stator 81 and an outer rotor 82 rotatably mounted on the outside of the inner stator 81 are coaxially arranged in the motor housing 7, and both ends of the inner stator 81 are fixed to the axial flow channel shell 6 through support rods. A lead wire 11 is connected to the inner stator 81, and a temperature sensor 18 is attached around the outer wall of the inner stator 81. The lead wire 11 is led to the axial flow channel shell 6 through the inner stator 81, the outer rotor 82, and the inside of the support rod.

[0059] The cardiac blood pump 4 adopts a series configuration and is located in the cardiac artery tube 1. The cardiac blood pump 4 includes an axial flow channel shell 6 and a motor housing 7. The length of the motor housing 7 in the axial direction is less than or equal to the length of the axial flow channel shell 6 in the axial direction, and the motor housing 7 is embedded in the axial flow channel shell 6. Moreover, the motor housing 7 is arranged in the ventricle 2 and below the aortic valve or pulmonary valve 3. When the motor housing 7 is driven to provide kinetic energy, a blood flow channel is formed between the motor housing 7 and the axial flow channel shell 6, and the aortic valve or pulmonary valve 3 above the flange portion 5 opens, and blood flows from the ventricle 2 into the artery. With respect to the prior art, the motor housing 7 is first shortened to above the ventricle 2 so that the motor of the cardiac blood pump 4 does not need to pass through the ventricle 2 during implantation, which will not cause damage to the ventricle 2 and reduce the difficulty of the operation. On this basis, the motor housing 7 is arranged below the aortic valve or pulmonary valve 3 to avoid the size of the motor housing 7 itself from blocking the blood circulation process.

[0060] A further preferred technical solution is: the length of the motor housing 7 in the axial direction is less than or equal to the length of the axial flow channel shell 6 in the axial direction, and the upper and lower ends of the axial flow channel shell 6 are respectively provided with fixed brackets 12, one end of the support rod is connected to the upper or lower end of the axial flow channel shell 6, and the other end of the support rod is connected to one end of the inner stator 81, so that the motor housing 7 is fixed on the axial flow channel shell 6 and is located inside the axial flow channel shell 6.

[0061] A further preferred technical solution is: an outer rotor 82 and an inner stator 81 are configured in the motor housing 7, one of the outer rotor 82 and the inner stator 81 includes a permanent magnet 16 and one of the outer rotor 82 and the inner stator 81 includes a winding coil, and the outer rotor 82 is rotatably mounted outside the inner stator 81, and the outer rotor 82 serves as the outer shell of the motor housing 7. An impeller 14 is provided on the outer wall of the outer shell, so that the outer rotor 82 rotates while driving the impeller 14 to rotate.

[0062] Among them, such as Figure 6 As shown, the motor housing 7 is provided with a stator located in the center and a rotor located on the outside, namely an inner stator 81 and an outer rotor 82. A winding coil can be provided on the inner stator 81, and a permanent magnet can be provided on the outer rotor 82. Through the interaction between the winding coil and the permanent magnet, the outer rotor 82 is driven to rotate with the inner stator 81 as the central axis, thereby driving the impeller 14 on the outer wall of the outer rotor 82 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 3 opens, blood is ejected from the inside of the ventricle 2 into the cardiac artery 1.

[0063] In this embodiment, the size of the heart blood pump 4 can be reduced while the blood in the channel is rotated. The motor housing 7 adopts an inner stator 81 and an outer rotor 82. The inner stator 81 refers to the motor housing 7 using the stator as the central axis, and the outer rotor 82 refers to the motor housing 7 setting the rotor outside the stator. One of the stator and the rotor includes a permanent magnet 16 and one of the rotor and the stator includes a winding coil. In order to rotate the rotor located on the outside, the impeller 14 can be directly set on the outer wall of the rotor. When the rotor rotates, the impeller 14 is driven to rotate. Specifically, the inner stator 81 and the outer rotor 82 are set in the axial flow channel shell 6 using fixed brackets 12 at the front and rear ends. The fixed bracket 12 is composed of a number of tubular support rods. Figure 4 and Figure 5 As can be seen in the figure, the shape of the fixed bracket 12 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 shell 6, 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 shell 6 is connected to the inner stator 81, which has strong stability and realizes a fixed connection between the motor housing 7 and the inner wall of the axial flow channel shell 6. When the motor housing 7 is driven to provide kinetic energy, since the inner stator 81 is fixedly connected to the axial flow channel shell 6 through the fixed brackets 12 on both sides, a blood flow channel will be formed between the outer rotor 82 and the axial flow channel shell 6. The outer rotor 82 drives the impeller 14 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 3 above the flange portion 5 opens, and blood flows from the ventricle 2 into the artery.

[0064] Based on the above principle, the lead wire 11 refers to the wire used to drive the motor housing 7 to supply energy. The wire needs to be led out to the outer wall of the cardiac artery tube 1 to drive the motor housing 7 to provide kinetic energy. When the lead wire 11 is led out from the motor housing 7, the lead wire 11 will enter the blood flow channel. If the routing of the lead wire 11 is not adjusted, the presence of the lead wire 11 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 11 in the blood flow channel, the lead wire 11 itself will block the pumping of blood in the blood flow channel. Therefore, the lead wire 11 is combined with a fixed bracket 12 fixed to the motor housing 7. The fixed bracket 12 is composed of a tubular support rod, and the support rod can be a hollow rod. The lead wire 11 led out from the motor housing 7 is embedded in the hollow rod, so that the lead wire 11 is not directly routed in the blood flow channel, avoiding blocking the outflow of blood in the blood flow channel and reducing the impact on blood outflow.

[0065] A further preferred technical solution is: a temperature sensor 18 is attached around the inside of the motor housing 7 , a pressure sensor 17 is fixedly provided on the inner wall of the axial flow channel housing 6 , and the wires of the temperature sensor 18 and the pressure sensor 17 are bundled with the lead wire 11 .

[0066] like Figure 7 As shown, corresponding temperature sensors 18 and pressure sensors 17 are also provided for the cardiac blood pump 4. Based on the routing direction of the lead wire 11, the temperature sensor 18 is pasted around the motor housing 7 to facilitate bundling the wires of the temperature sensor 18 with the lead wire 11 at the motor housing 7, thereby reducing the influence of the wires of the temperature sensor 18 on the circulation of blood in the blood flow channel. In addition, the temperature sensor 18 can monitor the temperature of the motor housing 7 in real time. 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.

[0067] At the same time, a groove is defined within the axial flow channel housing 6, into which pressure sensors 17 are embedded at either end. One pressure sensor 17 is located near the aortic valve or pulmonary valve 3, and the other is located near the ventricle 2. In other words, the pressure sensors 17 are installed at the entrance and exit of the blood flow channel, respectively, to adjust the rotational speed of the inner rotor 92 according to pressure changes. Furthermore, the groove in which the pressure sensors 17 extend toward the lead wire 11, facilitating the bundling of the lead wires of the pressure sensors 17 along the groove and with the lead wire 11, thereby minimizing the impact of the pressure sensor 17 wires on blood circulation within the blood flow channel.

[0068] Example 3

[0069] Based on the embodiment 1, a cardiac blood pump 4 adopting a new path for the lead wire 11 is proposed in this embodiment, such as Figures 8-12 As shown, a further preferred technical solution is: an inner rotor 92 and an outer stator 91 rotatably mounted outside the inner rotor 92 are coaxially arranged in the motor housing 7, the outer wall of the outer stator 91 is fixed to the axial flow channel shell 6 through a support rod, a lead wire 11 is connected to the outer stator 91, and a temperature sensor 18 is attached around the inner wall of the outer stator 91, and the lead wire 11 is led to the axial flow channel shell 6 through the inner part of the outer stator 91 and the support rod.

[0070] like Figure 8As shown, the cardiac blood pump 4 adopts a series configuration and is located in the cardiac artery tube 1. The cardiac blood pump 4 includes an axial flow channel shell 6 and a motor shell 7. The length of the motor shell 7 in the axial direction is greater than the length of the axial flow channel in the axial direction, and the motor shell 7 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 shell 6, so that the motor shell 7 is fixed on the axial flow channel shell 6; the other end of the support rod is connected to the outer wall of the upper half of the motor shell 7, so that the upper half of the motor shell 7 is located in the axial flow channel shell 6 and the lower half of the motor shell 7 is exposed outside the axial flow channel shell 6 and is located in the ventricle 2.

[0071] A further preferred technical solution is: it also includes a rotating part 19 connected to one end of the motor housing 7, and an impeller 14 is provided on the outer wall of the rotating part 19. An inner rotor 92 and an outer stator 91 are configured in the motor housing 7, and one of the inner rotor 92 and the outer stator 91 includes a permanent magnet 16 and one of the inner rotor 92 and the outer stator 91 includes a winding coil. The inner rotor 92 is rotatably installed in the outer stator 91, and one end of the inner rotor 92 located in the axial flow channel shell 6 is connected to the rotating part 19, so that the inner rotor 92 rotates while driving the impeller 14 to rotate.

[0072] like Figure 9-10 As shown, the outer wall of the upper half of the motor housing 7 is fixedly connected to the inner wall of the axial flow channel shell 6 by a fixing bracket 12, and the lower half of the motor housing 7 is exposed outside the axial flow channel shell 6, presenting a stepped shape, forming a stepped heart blood pump 4, and the stepped heart blood pump 4 is arranged in the ventricle 2 and below the aortic valve or the pulmonary valve 3. It can be seen that compared with the prior art, the motor housing 7 of the present invention adopts a shortening technical means to set the motor above the ventricle 2. The motor does not pass through the ventricle 2, which will not cause damage to the ventricle 2 and reduce the difficulty of the operation. In addition, based on the structure of arranging the heart blood pump 4 in the ventricle 2 and below the aortic valve or pulmonary valve 3, a stepped ventricle 2 auxiliary circulation pump device is designed, and the stepped shape includes: the outer wall of the axial flow channel shell 6 and the outer wall of the lower half of the motor housing 7 form a decreasing step shape, and the outer wall of the power part and the outer wall of the lower half of the motor housing 7 form an increasing step shape. Through the design of the above two stepped shapes, while forming a blood flow channel between the motor housing 7 and the axial flow channel shell 6, the blood pumping amount in the blood flow channel can be effectively increased.

[0073] Specifically, the outer wall of the axial flow channel shell 6 and the outer wall of the lower half of the motor housing 7 form a decreasing step shape mainly through a fixed bracket 12. In the present invention, the motor housing 7 adopts the configuration of an inner rotor 92 and an outer stator 91. One of the inner rotor 92 and the outer stator 91 includes a permanent magnet 16 and one of the inner rotor 92 and the outer stator 91 includes a winding coil. The inner rotor 92 refers to the motor housing 7 setting the rotor on the central axis, and the outer stator 91 refers to the motor housing 7 setting the stator on the outside of the rotor. The inner rotor 92 is installed in the inner rotation of the outer stator 91, and the inner rotor 92 rotates in an axial manner. Based on the configuration of the motor housing 7, a fixed bracket 12 can be directly welded on the outer shell of the motor housing 7. The fixed bracket 12 is composed of a number of support rods. Figure 9 and Figure 10 It can be seen that the shape of the fixed bracket 12 is specifically a herringbone shape, which is composed of three support rods, one end of each support rod is welded to the inner wall of the axial flow channel shell 6, and the other end of each support rod is welded to the outer wall of the upper half of the motor housing 7, so that the upper half of the motor housing 7 is fixed in the axial flow channel shell 6, and the lower half of the motor housing 7 is exposed outside the axial flow channel shell 6. It can be seen that based on the fixed bracket 12 connected between the motor housing 7 and the axial flow channel shell 6, the diameter of the motor housing 7 is smaller than the diameter of the axial flow channel shell 6, so that the outer wall of the axial flow channel shell 6 and the outer wall of the lower half of the motor housing 7 form a decreasing step shape, then blood circulation can be formed between the motor housing 7 and the axial flow channel shell 6, and the size of the blood circulation can be adjusted by adjusting the length of the support rod or the diameter of the motor housing 7, so that the present invention can assist the heart to effectively pump blood while ensuring the stability of the motor housing 7.

[0074] Specifically, the outer wall of the rotating portion 19 and the outer wall of the lower half of the motor housing 7 form an increasing stepped shape, that is, the motor housing 7 adopts the configuration of the inner rotor 92 and the outer stator 91, and a rotating portion 19 is added to the motor housing 7. The rotating portion 19 is arranged in front of the motor housing 7, and the impeller 14 is arranged on the rotating portion 19. The rotation of the impeller 14 is achieved by the inner rotor 92 connected to the rotating portion 19, as shown in FIG. Figure 11 and Figure 12As shown in , the front end of the inner rotor 92 faces the aortic valve or pulmonary valve 3, and the front end is connected to the rotating portion 19 and embedded in the interior of the rotating portion 19. When the inner rotor 92 rotates, it can drive the rotating portion 19 in front to rotate synchronously. The outer wall of the rotating portion 19 is provided with an impeller 14, and the blood in the blood flow channel is rotated by the impeller 14. It can be seen that on this basis, adding a rotating portion 19 to the motor housing 7 can reduce the relative distance between the motor housing 7 and the aortic valve or pulmonary valve 3, so that there is no obstruction between the motor housing 7 and the aortic valve or pulmonary valve 3. In addition, when the diameter of the rotating portion 19 is smaller than the diameter of the motor housing 7, the outer wall of the rotating portion 19 and the outer wall of the lower half of the motor housing 7 form an increasing step shape, increasing the diameter of the blood flow channel in the axial flow channel shell 6. The stepped design of the motor housing 7 increases the blood flow channel, which can effectively increase the blood pumping volume.

[0075] Among them, such as Figure 11 As shown, the motor housing 7 is provided with a rotor located in the center and a stator located on the outside, namely an inner rotor 92 and an outer stator 91. A permanent magnet can be provided on the inner rotor 92, and a winding coil can be provided in the outer stator 91. Through the interaction between the winding coil and the permanent magnet, the inner rotor 92 is driven to rotate in the axial direction, thereby synchronously driving the impeller 14 on the outer wall of the rotating part 19 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 3 is opened, blood is ejected from the inside of the ventricle 2 into the cardiac artery 1.

[0076] A further preferred technical solution is: the motor housing 7 has a lead wire 11 for driving the motor housing 7 to supply energy, the lead wire 11 is led to the axial flow channel shell 6 through the inside of the support rod, and penetrates the axial flow channel shell 6 to the outer wall of the axial flow channel shell 6, and then extends radially outward along the flange portion 5 until it is led out from the root of the arterial valve, and then led out from the root 31 of the aorta or pulmonary artery.

[0077] like Figure 11-12As shown, the lead wire 11 refers to the wire used to drive the motor to supply energy. The wire needs to be led out to the outer wall of the cardiac artery tube 1 to realize the driving motor housing 7 to provide kinetic energy. When the lead wire 11 is led out from the motor housing 7, the lead wire 11 will enter the blood flow channel. If the routing of the lead wire 11 is not adjusted, the presence of the lead wire 11 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 11 in the blood flow channel, the lead wire 11 itself will block the pumping of blood in the blood flow channel. The lead wire 11 is combined with a fixed bracket 12 fixed to the motor housing 7. The fixed bracket 12 is composed of a tubular support rod. The support rod can be a hollow rod. The lead wire 11 led out from the motor housing 7 is embedded in the hollow rod, so that the lead wire 11 is not directly routed in the blood flow channel, avoiding blocking the outflow of blood in the blood flow channel and reducing the impact on blood outflow.

[0078] A further preferred technical solution is: a temperature sensor 18 is attached around the inside of the motor housing 7 , a pressure sensor 17 is fixedly provided on the inner wall of the axial flow channel housing 6 , and the wires of the temperature sensor 18 and the pressure sensor 17 are bundled with the lead wire 11 .

[0079] like Figure 12 As shown, corresponding temperature sensors 18 and pressure sensors 17 are also provided for the cardiac blood pump 4. Based on the routing direction of the lead wire 11, the temperature sensor 18 is pasted around the motor housing 7 to facilitate bundling the wires of the temperature sensor 18 with the lead wire 11 at the motor housing 7, thereby reducing the influence of the wires of the temperature sensor 18 on the circulation of blood in the blood flow channel. In addition, the temperature sensor 18 can monitor the temperature of the motor housing 7 in real time. 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.

[0080] At the same time, a groove is defined within the axial flow channel housing 6, into which pressure sensors 17 are embedded at either end. One pressure sensor 17 is located near the aortic valve or pulmonary valve 3, and the other is located near the ventricle 2. In other words, the pressure sensors 17 are installed at the entrance and exit of the blood flow channel, respectively, to adjust the rotational speed of the inner rotor 92 according to pressure changes. Furthermore, the groove in which the pressure sensors 17 extend toward the lead wire 11, facilitating the bundling of the lead wires of the pressure sensors 17 along the groove and with the lead wire 11, thereby minimizing the impact of the pressure sensor 17 wires on blood circulation within the blood flow channel.

[0081] 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 ventricular assist pump device with a lead-out line passing through a suture body, characterized in that: include: A heart blood pump (4) connected in series with a heart artery tube (1), the heart blood pump (4) being suspended in a ventricle, the heart blood pump (4) comprising a motor housing (7), an axial flow channel housing (6) coaxially sleeved outside the motor housing (7), the upper end of the axial flow channel housing (6) being provided with a radially outwardly facing flange portion (5), the upper surface of the flange portion (5) facing the lower surface of the aortic valve or the pulmonary valve (3) and being sutured with the aorta or the pulmonary artery root (31), a lead wire (11) being led out from the circumferential outer wall of the axial flow channel housing (6), the lead wire (11) being close to the lower surface of the flange portion (5) along the axial direction of the axial flow channel housing (6) on the circumferential outer wall, and the lead wire (11) passing through the aorta or the pulmonary artery root (31) along the radial direction of the flange portion (5); The upper surface or / and lower surface of the flange portion (5) are pre-installed or temporarily assembled with a suture body, the suture body located on the upper surface is an upper suture body (101) used for suturing with the lower surface of the aorta or pulmonary artery root (31) or for suturing with the circumferential annulus of the cardiac blood pump (4), the circumferential annulus of the cardiac blood pump (4) is also used for suturing with the aorta or pulmonary artery root (31), the suture body located on the lower surface is a lower suture body (102) used for suturing with the aorta or pulmonary artery root (31), and the lead wire (11) passes through the suture body located on the lower surface and passes through the aorta or pulmonary artery root (31).

2. A ventricular assist pump device with a lead-out line passing through a suture body according to claim 1, characterized in that: The lead wire (11) is led out from the motor housing (7), extends between the motor housing (7) and the axial flow channel housing (6), passes through the axial flow channel housing (6), and is led out from the circumferential outer wall of the axial flow channel housing (6).

3. The ventricular assist pump device with a lead-out line passing through a suture body according to claim 1, characterized in that: A fixing bracket (12) is further provided between the axial flow channel housing (6) and the motor housing (7), and the fixing bracket (12) includes at least one tubular support rod, one end of the support rod is connected to the motor housing (7), and the other end of the support rod is connected to the axial flow channel housing (6), and a lead wire (11) led out from the motor housing (7) extends between the motor housing (7) and the axial flow channel housing (6) through the interior of the support rod and passes through the axial flow channel housing (6).

4. A ventricular assist pump device with a lead-out line passing through a suture body according to claim 3, characterized in that: A stator and a rotor are coaxially arranged in the motor housing (7), one of the rotor and the stator includes a permanent magnet (16) and one of the rotor and the stator includes a winding coil, and a lead wire (11) is connected to the stator, and the lead wire (11) is led to the axial flow channel housing (6) through the stator and the interior of the support rod.

5. A ventricular assist pump device with a lead-out line passing through a suture body according to claim 4, characterized in that: A temperature sensor (18) is provided in the motor housing (7), a pressure sensor (17) is provided on the inner wall of the axial flow channel housing (6), and the wires of the temperature sensor (18) and the pressure sensor (17) are bundled with the lead wire (11).

6. A ventricular assist circulatory pump device with a lead-out line passing through a suture body according to claim 5, characterized in that: An inner stator (81) and an outer rotor (82) rotatably mounted outside the inner stator (81) are coaxially arranged inside the motor housing (7). Both ends of the inner stator (81) are fixed to the axial flow channel housing (6) through support rods. A lead wire (11) is connected to the inner stator (81). A temperature sensor (18) is attached around the outer wall of the inner stator (81). The lead wire (11) is led to the axial flow channel housing (6) through the inner stator (81), the outer rotor (82), and the interior of the support rod.

7. The ventricular assist pump device with a lead-out line passing through a suture body according to claim 5, characterized in that: An inner rotor and an outer stator (91) rotatably mounted outside the inner rotor are coaxially arranged inside the motor housing (7); the outer wall of the outer stator (91) is fixed to the axial flow channel housing (6) via a support rod; a lead wire (11) is connected to the outer stator (91); a temperature sensor (18) is attached around the inner wall of the outer stator (91); the lead wire (11) is led to the axial flow channel housing (6) through the inner wall of the outer stator (91) and the support rod.

8. The ventricular assist pump device with a lead-out line passing through a suture body according to claim 2, characterized in that: The flange portion (5) is provided with a plurality of assembly holes (51), the axial direction of the assembly holes (51) being the same as the axial direction of the axial flow channel shell (6), so that the upper surface and / or the lower surface of the flange portion (5) are pre-installed or temporarily assembled with a suture body through the assembly holes (51).

9. The ventricular assist pump device with a lead-out line passing through a suture body according to claim 8, characterized in that: The suture body is an annular medical polyester braided body or an annular polytetrafluoroethylene braided body or an annular artificial blood vessel.

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