CN113546298B

CN113546298B - In-vivo assembly and system for magnetomotive heart auxiliary power system

Info

Publication number: CN113546298B
Application number: CN202110819750.1A
Authority: CN
Inventors: 徐俊波; 谢江
Original assignee: No 3 Peoples Hospital of Chengdu
Current assignee: No 3 Peoples Hospital of Chengdu
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2023-08-15
Anticipated expiration: 2041-07-20
Also published as: CN113546298A

Abstract

The invention belongs to the technical field of medical appliances, and particularly relates to an in-vivo assembly and system for a magnetomotive heart auxiliary power system. The in-vivo assembly for the magnetomotive heart auxiliary power system comprises a movable block support and at least one magnetic movable block with magnetism, wherein the movable block support is used for supporting the magnetic movable block, the relative position of the movable block support and the heart is fixed, and the magnetic movable block is movably connected with the movable block support, so that the magnetic movable block can move in the direction towards and/or away from the heart. In this scheme, set up magnetism loose piece on the heart through the mode of support, the support can be convenient with not cause under the prerequisite of too big damage fix outside the heart in the wicresoft implantation, makes to arrange the supplementary magnetic loose piece of more quantity become reality, more does benefit to the difference power assistance to the heart different positions, moreover because the increase of magnetism loose piece quantity, also improved the control accuracy to heart auxiliary power by a wide margin.

Description

In-vivo assembly and system for magnetomotive heart auxiliary power system

Technical Field

The invention belongs to the technical field of medical appliances, and particularly relates to an in-vivo assembly and system for a magnetomotive heart auxiliary power system.

Background

Under normal conditions of a human body, the sinus node of the right atrium of the heart can autonomously and periodically send out physiological pulse electric signals, and the physiological pulse electric signals are transmitted to each part of the heart through a myocardial nervous system, so that the heart muscle periodically contracts and expands, and blood is pumped to the whole body.

Heart failure is a clinical syndrome in which the structural or functional abnormalities of the heart cause an impaired ability of the ventricles to contract or relax, causing a series of pathophysiological changes. When heart failure occurs, the heart contraction and pacing capacity is reduced, the compliance of the ventricular diastole is reduced, the active filling is obviously reduced, the change rate of the volume of the systole and diastole is reduced, a large amount of blood remains in the heart, the ventricular diastole pressure is increased, and the deformation of the heart cavity is enlarged, so that the myocardial oxygen consumption is obviously increased, and the myocardial contraction efficiency is obviously reduced.

Currently, drugs and cardiac resynchronization therapy are generally adopted for treating heart failure patients, and for treating end-stage heart failure patients, the treatment effect is difficult to achieve only by the drugs, and ventricular assist devices become necessary options in treatment means.

In terms of the current ventricular assist device, the core principle is that the pump body is arranged on the heart of a patient, and the pump body pumps blood, so that the problem of insufficient pumping capacity of a heart failure patient is solved, and although the mode is relatively widely used in European and American countries, in further clinical treatment work and research and development work, the inventor finds that the mode still has the defects, and the method is characterized in that: when the heart auxiliary device is installed, the blood inflow and outflow pipeline ends of the pump body are required to be respectively and directly inserted into the left ventricle and the ascending aorta, so that the problems of large trauma, high operation difficulty, high risk and the like are solved; in addition, the direct contact of the blood with the heart pump and the direct contact of the internal and external parts of the ventricular assist device can easily cause complications such as infection, hemorrhage, thrombosis and the like; in particular, further consideration of pump body structural failure risk, service life and the like is required.

In order to solve the problems, the inventor submits a Chinese patent application with the name of 2019, 8 and 22 days: a magnetomotive ventricular assist system, filed CN2019107796185, comprising: the magnetic induction device consists of a plurality of magnetic induction sheets with biocompatibility; the magnetic induction sheet is provided with a plurality of ventricular motion sensors and hemodynamic sensors; the magnetomotive device consists of a wearable coil, a power supply and a controller; the controller is used for adjusting the current parameters in the wearable coil in real time according to the ventricular motion parameters and the hemodynamic parameters to generate adaptive magnetomotive force; the magnetic induction sheet generates driving force for assisting the pulsation of the left ventricle and/or the right ventricle according to the magnetomotive device. In the scheme of the invention, the magnetomotive ventricular assist system can realize non-direct contact with blood in a mode of an external magnetic induction device and a magnetomotive device, so that risks such as wire winding, infection, bleeding, thrombosis and the like are avoided, and survival rate and life quality of patients with end-stage heart failure are improved.

In further development work, the inventor finds out how to improve the accuracy of controlling the magnetic induction sheet action, and still needs further optimization, and based on this, the application provides a wearable magnetic heart auxiliary power system.

Disclosure of Invention

The application aims at: aiming at the defect that the action of a magnetic induction sheet is difficult to accurately control when the magnetic induction sheet is controlled by a magnetic field in the prior heart auxiliary power device, the external wearing device and the magnetomotive heart auxiliary power system are provided.

In order to achieve the above object, the present application provides the following technical solutions:

an in-vivo assembly for a magnetomotive heart assist power system comprises a movable block support and at least one magnetic movable block with magnetism, wherein the movable block support is used for supporting the magnetic movable block, the relative position of the movable block support and a heart is fixed, and the magnetic movable block is movably connected with the movable block support, so that the magnetic movable block can move in a direction towards and/or away from the heart. In this scheme, set up magnetism loose piece on the heart through the mode of support, the support can be convenient with do not cause under the prerequisite of too big damage the minimally invasive implantation fix outside the heart, for example: the fundus or apex, or to other tissues, such as: the aortic root, the relative position of loose piece support and heart is fixed, and magnetism loose piece activity sets up on the loose piece support, and like this mode can reduce the connection degree of difficulty of magnetism loose piece and heart by a wide margin to and the heart damage that leads to because of connecting magnetism loose piece, further, because the wound to the heart only is decided by the setting of support, it becomes reality to make to arrange the magnetism loose piece of more quantity, is favorable to the differential power assistance to the heart different positions more, and because the increase of magnetism loose piece quantity has also improved the control accuracy to heart auxiliary power by a wide margin.

Preferably, the number of the magnetic movable blocks is at least two. When the magnetic movable blocks adopt at least two, two or more parts of the heart can be simultaneously pressed in an auxiliary mode, so that the magnetic movable blocks are suitable for various pressing action combinations and are suitable for different illness needs.

Preferably, the loose-piece support is of a shell structure coated outside the heart, the shape of the inner side wall of the loose-piece support is matched with the shape of the loose-piece support during diastole filling, and a stabilizing piece for fixing the shell on the heart is further arranged on the shell. The shape of the inner side wall of the movable block support is matched with the shape of the heart in diastole, so that the obstruction of the movable block support to heart pulsation is avoided.

The application also discloses a magnetomotive heart auxiliary power system,

the external wearing device comprises an external magnetic piece corresponding to the magnetic movable block, wherein the magnetism of the external magnetic piece is controllable, so that the size and/or the direction of a magnetic force formed between the external magnetic piece and the magnetic movable block are controllable, and each magnetic movable block corresponds to at least one external magnetic piece. According to the wearable magnetic heart auxiliary power system, each magnetic movable block is correspondingly provided with at least one external magnetic piece, so that each magnetic movable block can be independently controlled by the external magnetic piece according to the requirement, the force application size and direction of each magnetic movable block to the heart can be independently controlled according to the requirement, the action control precision of the magnetic movable blocks is greatly improved, in addition, the differential power auxiliary effect of different actions of each part when the heart beats can be formed, more accurate power auxiliary is provided for different vital sign/heart function data, for example, for certain patients or certain moments, only the cardiac muscle at the left ventricle is applied to pressure to assist the left ventricle to pump blood into the ascending aorta, for certain patients or certain moments, only the cardiac muscle at the right ventricle is applied to pressure to assist the right ventricle to pump blood into the pulmonary artery, or the left ventricle and the right ventricle to assist the blood into the ascending aorta or the pulmonary artery simultaneously, the differential power auxiliary effect of each part of the heart can be formed, in particular, the magnetic power auxiliary effect of the parts can also be formed, and the magnetic auxiliary effect of the multiple parts can be formed in a synergistic mode, and the state of the magnetic movable blocks is consistent with the actual state of the heart and the state of the heart is formed in real time.

Compared with the prior art, the application has the beneficial effects that:

1. the internal assembly for the magnetomotive heart auxiliary power system is characterized in that the magnetic movable blocks are arranged on the heart in a bracket mode, so that the connection difficulty between the magnetic movable blocks and the heart damage caused by the connection of the magnetic movable blocks can be greatly reduced;

2. in one embodiment, in the wearable magnetic heart auxiliary power system, each magnetic movable block is correspondingly provided with at least one external magnetic piece, so that the motion control precision of the magnetic movable block is greatly improved, and in such a way, the differential power auxiliary effect of different motions of each part during heart beating can be formed, and more accurate power assistance is provided for different vital sign/heart function data; the magnetic movable blocks at a plurality of positions can cooperate to form a plurality of power assistance which is consistent with the actual illness state and the real-time heart function state of the patient;

3. In some embodiments, the positions of the magnet units are adjustable, the halbach magnet array is formed after a plurality of magnet units are arranged according to a certain arrangement rule, for the same halbach magnet array, when the position of one or some magnet units changes, the magnetic field formed by the halbach magnet array also changes, through the change, the control of the pressing strokes of different pressing forces and pressing force directions of the internal magnetic movable blocks is further realized, further, the vital sign/heart function data of a patient are related to the position data of each magnet unit, the position data of each magnet unit is controlled through the vital sign/heart function data of the patient, and then the adjustment of the magnetic field of the halbach magnet array is realized, and the control mode can be that the magnet units of the halbach magnet array are placed on a supporting device, and an adjusting mechanism capable of adjusting the positions and/or the magnetic pole directions of the magnet units is arranged, the adjusting mechanism is in communication connection with a microcomputer provided with a control program, the vital sign/heart function data of the patient enters the microcomputer, and after the control program, the corresponding action and/or the magnetic pole direction adjustment of the magnet units are realized by driving the adjusting mechanism; further, for the halbach magnet sequence, compared with the traditional magnet, when the magnetic field with the same intensity is formed, the material can be greatly reduced, the weight of the wearing device of the patient can be greatly reduced, and the comfort of the patient is improved;

Particularly, in the daily activities of patients, the body is in an active state, the risk of unstable positions of the external wearing device is extremely high, such as up-and-down reciprocating shaking of the positions, even integral displacement, the change of the positions of the external wearing device can affect the internal magnetic movable blocks, the problem of uncontrollable fluctuation of the internal magnetic movable blocks on the application of force to the heart occurs, auxiliary power failure occurs when serious, even treatment accidents caused by the false application of force to the internal magnetic movable blocks occur, so that when the external magnetic part adopts a halbach magnet sequence, the weight of the external magnetic part is greatly reduced, the external wearing device can maintain better position stability, the accuracy and stability of the application of force to the internal magnetic movable blocks are improved, and particularly, the occurrence risk of the accidents is greatly reduced;

4. in some embodiments, the external magnetic part adopts an electromagnet mode, and the magnetism of the external magnetic part is controlled by controlling the current and the direction of the electromagnet, so that in the current technical level, the electromagnet has a simple structure and mature and reliable technology, and in the scheme of the application, the electromagnet is adopted as the external magnetic part, so that the manufacturing cost and the later maintenance cost of the system can be greatly reduced;

5. In some of these embodiments, an elastic membrane with elasticity and biocompatibility is disposed on the stent notch, the magnetic loose piece is disposed on the elastic membrane, the magnetic loose piece has an initial position, when the magnetic loose piece is located at the initial position, a side of the magnetic loose piece facing the heart contacts with a side wall of the heart in a diastole state, and the elastic membrane is in a natural stretching state. In the mode of the embodiment, the elastic membrane is arranged on the notch, then the magnetic movable block is arranged on the re-elastic membrane, when the external magnet assembly applies thrust to the magnetic movable block, the magnetic movable block overcomes the elasticity of the elastic membrane to apply pressing power assistance to the heart, and when the magnetic field of the external magnetic piece is eliminated, the magnetic movable block returns to the initial position under the action of the elastic force of the elastic membrane, so that the control requirement and the control difficulty to the external assembly are greatly reduced in the mode;

6. in some of these embodiments, the magnetic loose piece comprises a pressing portion and a magnetic portion having magnetic properties, which is arranged on a side of the pressing portion facing away from the heart. In the mode, the pressing part is prepared from a conventional material with biocompatibility, the structure of the pressing part is matched with the shape of a heart, the magnetic movable block is provided with the pressing part and the magnetic part, the magnetic part is prepared from a magnetic material, and when the magnetic part is manufactured, compared with the mode that the whole magnetic movable block is a magnet, the mode of the scheme can adopt a normal magnet production mode to produce the magnetic part, does not need to consider the special shape of the heart to make adjustment and does not need to consider the contact with the heart to put forward higher requirements, so that the manufacturing difficulty of the magnet in the scheme is greatly reduced; on the other hand, the shape of the magnet with a conventional structure can be adopted, and the formed magnetic field is more regular, so that the manufacturing difficulty of the magnet and the difficulty of controlling the external magnetic field are greatly reduced.

Drawings

FIG. 1 is a schematic block diagram of one embodiment of a magnetomotive heart assist power system in accordance with the present application;

FIG. 2 is a schematic diagram of a magnetic loose piece arrangement according to an embodiment of the present application;

FIG. 3 is a schematic diagram of an external magnetic member according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a magnetic loose piece arrangement according to an embodiment of the present application;

FIG. 5 is a schematic view of a structure of a loose-piece stand according to an embodiment of the present application;

FIG. 6 is a schematic view of a structure of a loose-piece stand according to an embodiment of the present application;

FIG. 7 is a schematic view of a structure of a loose-piece stand according to an embodiment of the present application;

FIG. 8 is a schematic view of a structure of a loose-piece stand according to an embodiment of the present application;

FIG. 9 is a schematic view of a structure of a loose-piece stand according to an embodiment of the present application;

FIG. 10 is a schematic view of a partial structure of a movable block support according to an embodiment of the present application, which cooperates with a magnetic movable block when the movable block support adopts a bag-like structure;

FIG. 11 is a schematic view of a partial structure of a magnetic loose piece and a loose piece support according to an embodiment of the present application;

FIG. 12 is a schematic view of a partial structure of a magnetic loose piece and a loose piece stand according to an embodiment of the present application;

FIG. 13 is a schematic view of a partial structure of a magnetic loose piece and a loose piece stand according to an embodiment of the present application;

FIG. 14 is a schematic view showing a partial structure of a magnetic loose piece and a loose piece bracket according to an embodiment of the present application;

FIG. 15 is a schematic view of a partial structure of a magnetic loose piece and a loose piece stand according to an embodiment of the present application;

FIG. 16 is a schematic view of a partial structure of a magnetic loose piece and a loose piece stand according to an embodiment of the present application;

FIG. 17 is an enlarged view of a portion of FIG. 16 at A;

FIG. 18 is a schematic view of a partial structure of a notch of a loose-piece stand according to an embodiment of the present application;

FIG. 19 is a schematic view showing a partial structure of a guide cylinder provided at a notch of a movable block support according to an embodiment of the present application,

the figures indicate: the magnetic force sensor comprises a 1-magnetic movable block, a 2-external magnetic part, a 3-magnet unit, a 4-support, a 5-driving device, a 6-microcomputer, a 7-sensor, an 8-power supply, a 9-connecting part, a 10-movable block support, a 11-stabilizing piece, a 12-notch, a 13-flexible film, a 14-elastic film, a 15-pressing part, a 16-mounting seat, a 17-magnet, a 18-large opening, a 19-small opening, a 20-magnetism isolating material layer, a 21-guide cylinder and a 22-binding part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the application.

Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, under the condition of no conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Example 1, as shown in fig. 1-19:

an in-vivo assembly for a magnetomotive heart assist power system comprises a movable block support and at least one magnetic movable block with magnetism, wherein the movable block support is used for supporting the magnetic movable block, the relative position of the movable block support 10 and a heart is fixed, and the magnetic movable block 1 is movably connected with the movable block support 10, so that the magnetic movable block 1 can move in the direction towards and away from the heart. In the scheme of this embodiment, the magnetic loose piece 1 is arranged on the heart by means of a bracket, and the bracket can be fixed outside the heart by minimally invasive implantation on the premise of being convenient and not causing excessive damage, for example: the fundus or apex, or to other tissues, such as: the aortic root, the relative position of loose piece support 10 and heart is fixed, and the activity of magnetism loose piece 1 sets up on loose piece support 10, and such mode can reduce the connection degree of difficulty of magnetism loose piece 1 and heart by a wide margin to and the heart damage that leads to because of connecting magnetism loose piece 1, further, because the wound to the heart only is decided by the setting of support, it becomes reality to make to arrange the magnetism loose piece 1 of more quantity, more do benefit to the difference power assistance to the heart different positions, and because the increase of magnetism loose piece 1 quantity has also improved the control accuracy to heart auxiliary power by a wide margin.

As a preferred embodiment, on the basis of the above mode, further, the number of the magnetic loose pieces 1 is at least two. When the magnetic movable block 1 adopts at least two parts, two or more parts of the heart can be simultaneously assisted to be pressed so as to adapt to various pressing action combinations and adapt to different illness needs.

As another preferred embodiment, the loose-leaf stand 10 is a casing structure that is wrapped outside the heart, the shape of the inner side wall of the loose-leaf stand 10 matches with the shape of the heart during diastole, and a stabilizing member 11 for fixing the casing to the heart is further arranged on the casing. The shape of the inner side wall of the loose-piece stent 10 is matched with the shape of the heart in diastole, so that the blockage of the loose-piece stent 10 to heart pulsation is avoided.

As a preferred embodiment, the loose-leaf stand 10 is a bowl-shaped shell structure with an open upper end, and the shape of the loose-leaf stand 10 is adapted to the shape of the heart, similar to a coconut shape or a litchi shell shape. The movable block support 10 with the structure can be conveniently coated outside the heart, and the magnetic movable blocks 1 can be arranged at a plurality of part areas of the heart, so that a more proper power auxiliary scheme is provided for the heart of a patient in different states according to different levels of concentric functions.

As a preferred embodiment, as shown in fig. 8, the loose-piece stent 10 is fixed to the heart by suturing, and the stabilizer 11 is a suturing component, such as a suture, for suturing the loose-piece stent 10 to the heart. The support is reliably connected with the heart in a sewing mode, and a stable relative position fixing relation is formed, so that normal power auxiliary work is ensured in the working process.

As a preferred embodiment, as shown in fig. 7, the movable block holder 10 is an openable structure including at least two flaps. The movable block support 10 is arranged into a multi-petal-shaped openable and closable adapting structure, when the movable block support 10 is installed, the movable block support 10 is unfolded to be in an open state, then the movable block support 10 is covered on the heart in a closed mode, the stabilizing pieces are arranged between adjacent valve bodies, then the stabilizing pieces 11 are adopted to connect the movable block supports 10, and then the movable block support 10 is installed.

As another preferred embodiment, as shown in fig. 9, the stabilizing member 11 has a belt-like structure, and the stabilizing member 11 is disposed at an open end of the living-block support 10 and bypasses the upper side of the heart to fix the living-block support 10. In this way, the band-shaped stabilizing member 11 is wound around the heart or the tissue near the heart, so that damage to the heart due to fixation of the living-mass stent 10 can be minimized.

As another preferred embodiment, as shown in fig. 7, the stabilizing member 11 is an anchoring protrusion provided on the inside of the loose-piece stand 10, and the anchoring protrusion is embedded in the myocardium, thereby achieving the fixation of the loose-piece stand 10.

As a further preferred embodiment, the anchoring projections are arranged at positions corresponding to the ventricular septum of the heart, and the anchoring projections are embedded in the ventricular septum of the heart, so that the securing of the loose-piece stent 10 is achieved.

As another preferred embodiment, as shown in fig. 10, the loose-piece stand 10 may also be a bag-shaped structure made of a flexible material, so that the loose-piece stand 10 may be relaxed along with diastole of the heart, in this embodiment, the loose-piece stand 10 with a bag-shaped structure formed of a flexible material may be placed in a human body in a contracted state due to its soft texture, so that wounds on the human body may be greatly reduced, and recovery may be facilitated; moreover, the bag body structure can be well attached to the heart during diastole and systole, so that the position accuracy of the magnetic movable block 1 on the heart is ensured, and accurate power assistance to the heart is realized.

As a preferred embodiment, the magnetic loose piece 1 is arranged on the outside of the loose piece holder 10.

As another preferred embodiment, the bag body corresponding to the magnetic loose piece 1 has a double-layer structure, and the magnetic loose piece 1 is wrapped in the double-layer structure.

In a preferred embodiment, the loose-piece stent 10 is made of a biocompatible material.

As a preferred embodiment, a notch 12 for placing the magnetic loose piece 1 is provided on the loose piece support 10, and the notch 12 is in slidable fit with the magnetic loose piece 1. The magnetic movable block 1 is arranged in the notch 12, the magnetic movable block 1 can move in the direction towards the heart and away from the heart, when the external magnetic piece 2 acts, the heart at the position of the magnetic movable block 1 is pressed, the notch 12 can also vertically support the magnetic movable block 1, and the falling risk of the magnetic movable block 1 due to the dead weight and the daily activities of a patient is reduced.

As a preferred embodiment, at least one notch 12 is provided in the loose-piece holder 10 corresponding to the left ventricle of the heart. I.e. when there is a decrease in contractile function of the left ventricle of the patient's heart, pulsating auxiliary power is provided to the left ventricle by the magnetic loose piece 1.

As a preferred embodiment, at least one notch 12 is provided in the loose-piece holder 10 corresponding to the right ventricle of the heart. I.e. when there is a decrease in the systolic function of the right ventricle of the patient's heart, the pulsating auxiliary power is provided to the right ventricle by the magnetic loose piece 1.

As a preferred embodiment, the loose-leaf stand 10 is provided with a plurality of notches 12, so that the loose-leaf stand 10 is in a grid-shaped shell structure. In this way, a plurality of notches 12 are formed on the movable block support 10, and a plurality of magnetic movable blocks 1 are formed on the periphery of the heart, so that the movement of the magnetic movable blocks 1 in a required area can be controlled according to the actual illness state of a patient, the accurate control of heart auxiliary power is further realized, and the adaptability of patients with different illness states is greatly improved.

As a preferred embodiment, there is a clearance fit between adjacent magnetic loose pieces 1, the width of the clearance between adjacent magnetic loose pieces 1 ensuring that adjacent magnetic loose pieces 1 do not block each other against movement in the direction towards and away from the heart.

As a preferred embodiment, the edge of the magnetic loose piece 1 and the edge of the notch 12 are connected with a flexible membrane 13 with biocompatibility, and the flexible membrane 13 is used for preventing the magnetic loose piece 1 from falling off the bracket.

As a preferred embodiment, as shown in fig. 12, when the inner edge of the magnetic loose piece 1 is flush with the inner edge of the notch 12, the flexible film 13 is in a wrinkled state, and the amount of the wrinkles of the flexible film 13 provides a movement stroke of the magnetic loose piece 1 toward the heart direction.

As another preferred embodiment, as shown in fig. 13, the flexible film 13 has elasticity, and the flexible film 13 is in a naturally stretched state when the inner edge of the magnetic loose piece 1 is flush with the inner edge of the notch 12. In this way, when the flexible membrane 13 prevents the magnetic loose pieces 1 from falling off from the heart, and when the magnetic loose pieces 1 move towards the heart and provide pressing power assistance for the heart area, when the magnetic loose pieces 1 are pressed in place, the flexible membrane 13 resets the magnetic loose pieces 1 through the elasticity thereof, that is, in the embodiment, the resetting of the magnetic loose pieces 1 is provided by the flexible membrane 13 without providing corresponding magnetic fields for resetting the magnetic loose pieces 1 by an external component, in this way, the control requirements and the control difficulty of the external component are greatly reduced, and the structure of the external component and the design difficulty of the microcomputer 6 program are greatly simplified, so that the stability and the reliability of the use are further improved, and the later use and maintenance are also facilitated.

As a further preferred embodiment, as shown in fig. 4, the magnetic loose piece 1 is connected to the myocardium by stitching.

When the magnetic loose piece 1 is connected with the cardiac muscle through a sewing mode, the risk that the magnetic loose piece 1 is separated from displacement can be directly avoided, and when the heart has insufficient diastole, as described above, the system provided by the application is adopted, the external magnetic piece 2 provides the magnetic pole direction opposite to the internal magnetic loose piece 1, suction force is applied to the internal magnetic loose piece 1 or reset force provided by the elastic membrane, and the heart diastole assistance is realized, so that the heart pulsation assistance of a patient is further facilitated.

As a further preferred embodiment, the flexible membrane 13 is arranged outside the flapper holder 10 and magnetic flapper 1. In this way, firstly, the manufacturing is convenient, a plurality of problems possibly existing in the contact of the flexible membrane 13 with the heart can be avoided, and moreover, the flexible membrane 13 has a larger connecting area with the magnetic loose piece 1 and the loose piece support 10, so that the reliability of connection is ensured.

As a preferred embodiment, as shown in fig. 14, an elastic membrane 14 with elasticity and biocompatibility is provided on the notch 12, the magnetic loose piece 1 is provided on the elastic membrane 14, the magnetic loose piece 1 has an initial position, when the magnetic loose piece 1 is located at the initial position, a side of the magnetic loose piece 1 facing the heart contacts with a side wall of the heart in a diastole state, and the elastic membrane 14 is in a natural stretching state. In the mode of this embodiment, the elastic membrane 14 is disposed on the notch 12, then the magnetic loose piece 1 is disposed on the re-elastic membrane 14, when the external magnet 17 assembly applies thrust to the magnetic loose piece 1, the magnetic loose piece 1 overcomes the elasticity of the elastic membrane 14 to apply pressing power assistance to the heart, and when the magnetic field of the external magnetic member is eliminated, the magnetic loose piece 1 returns to the initial position under the action of the elastic force of the elastic membrane 14, so that the control requirement and the control difficulty to the external assembly are greatly reduced in the mode as described above.

As a further preferred embodiment, the elastic membrane 14 closes the gap 12. On one hand, the uniform magnetic movable block 1 is stressed in the circumferential direction, and on the other hand, the shell forms a closed space, so that the heart is protected.

As a further preferred embodiment, the magnetic loose piece 1 is arranged on the side of the elastic membrane 14 facing away from the heart.

In the scheme of the embodiment, the elastic membrane 14 exists between the magnetic loose piece 1 and the heart, so that the magnetic loose piece 1 is not in direct contact with the heart, but is in contact with the heart by the elastic membrane 14, the surface smoothness of the elastic membrane 14 is easy to control, so that the surface smoothness manufacturing requirement of the magnetic loose piece 1 is greatly reduced, further, the elastic membrane 14 is made of a flexible material, a certain buffer can be provided, the impact risk of the magnetic loose piece 1 on the heart is reduced, and the use safety of the embodiment is further ensured.

As a preferred embodiment, as shown in fig. 15, the magnetic loose piece 1 includes a pressing portion 15 and a magnetic portion having magnetism, the magnetic portion being provided on a side of the pressing portion 15 facing away from the heart. In this way, the pressing part 15 is made of conventional biocompatible materials, the structure of the pressing part is adapted to the shape of the heart, the magnetic movable block 1 is provided with the pressing part 15 and the magnetic part, the magnetic part is made of magnetic materials, and when the magnetic part is manufactured, compared with the way that the whole magnetic movable block 1 is the magnet 17, the way of the scheme can adopt the normal production way of the magnet 17 to produce the magnetic part, the special shape of the heart is not needed to be considered for adjustment, and the higher requirement is not needed to be considered for contact with the heart, so that the manufacturing difficulty of the magnet 17 in the scheme is greatly reduced; on the other hand, the shape of the magnet 17 with a conventional structure can be adopted, and the formed magnetic field is more regular, so that the manufacturing difficulty of the magnet 17 and the difficulty of controlling the external magnetic field are greatly reduced.

As a further preferred embodiment, a layer of biocompatible material is coated over the magnetic portion.

As another preferred embodiment, the magnetic part is made of a magnetic material having biocompatibility.

As a further preferred embodiment, the magnetic part comprises a mounting seat 16 and a magnet 17 arranged on the mounting seat 16, the mounting seat 16 being arranged on the side of the pressing part 15 facing away from the heart. In this way, the connection between the magnetic part and the pressing part 15 is further facilitated, reducing the requirements for the manufacture of the magnet 17.

As a further preferred embodiment, the magnet 17 is a permanent magnet 17 or halbach array magnet 17. The permanent magnet 17 is adopted, so that the service life of the system can be greatly prolonged, and the replacement frequency of the in-vivo magnetic movable block 1 can be reduced; when the halbach array magnet 17 is adopted, compared with the traditional magnet 17, when the magnetic field with the same intensity is formed, the material of the magnet 17 can be greatly reduced, the weight of the magnetic movable block 1 of a patient can be greatly reduced, the stability of the heart position of the patient is improved, and the displacement risk of the magnetic movable block 1 caused by the daily action impact of the patient is reduced.

As a further preferred embodiment, as shown in fig. 16, 17 and 18, the side wall of the notch 12 is stepped, the side of the notch 12 close to the heart is a large opening 18 with a larger size, the side away from the heart is a small opening 19 with a smaller size, the edge of the pressing part 15 is slidably matched with the side wall of the large opening 18, and the magnetic part is positioned in the small opening 19, or the magnetic part extends out of the movable block support 10 from the small opening 19. In this way, the risk that the magnetic loose piece 1 falls off from the loose piece support 10 is avoided, the step-shaped notch 12 can also form a good guiding effect, the magnetic loose piece 1 is ensured to move towards the heart and away from the heart, when the magnetic part extends out of the loose piece support 10 from the small opening 19, the distance between the magnetic part and the external magnet 17 is shortened, the external magnetic field strength requirement is further reduced, particularly the magnetic field interference formed by other external magnets 17 is reduced, and the controlled precision of the magnetic loose piece 1 is further improved.

As a further preferred embodiment, the mounting base 16 is provided with a clamping groove for clamping the magnet 17. The arrangement of the clamping groove facilitates the installation of the magnet 17 and also reduces the risk that the magnet 17 falls off the mounting seat 16.

As a further preferred embodiment, the mounting base 16 covers the magnet 17, and exposes only the end face of the magnet 17 facing the outside of the patient. In this way, the reliability of the magnet 17 is further improved, the influence of the material of the mounting seat 16 on the magnetic field between the magnet 17 of the magnetic movable block 1 and the external magnetic unit is avoided, in particular, the annular periphery of the magnet 17 is also covered, the magnetic field interference between the magnet 17 and other magnets 17 and the external non-corresponding magnetic parts can be reduced,

as a further preferred mode, the outer wall of the mounting base 16 is covered with a layer 20 of magnetic shielding material. A magnetic field shield is formed in the circumferential direction of the magnet 17, thus further reducing the magnetic field interference between the magnet 17 and the remaining magnet 17 and the external non-corresponding magnetic member.

As a further preferable embodiment, the outer wall of the pressing portion 15 is covered with a magnetic shielding material layer 20. As mentioned above, the magnetic field interference between the remaining magnet 17 and the external non-corresponding magnetic member is further isolated.

As a preferred embodiment, the edge of the notch 12 on the outer side of the loose-piece stand 10 is provided with an annular guide cylinder 21, as shown in fig. 19, the guide cylinder 21 is slidably matched with the side wall of the magnetic part, so as to support and guide the magnetic part and prevent the magnetic loose-piece 1 from falling off from the loose-piece stand 10.

As a further preferable mode, the outer wall of the guide cylinder 21 is covered with a magnetic isolation material layer 20. In this way, the magnetic field interference between the magnet 17 and the remaining magnets 17 and the external non-corresponding magnetic members is further reduced.

As a preferred embodiment, the loose-piece stand 10 and/or the flexible membrane 13 and/or the elastic membrane 14 and/or the pressing portion 15 are made of biocompatible materials.

Example 2, as shown in fig. 1-19:

the utility model provides a magnetic force heart auxiliary power system, includes the external wearing device that sets up in the patient's external and sets up in the internal subassembly of embodiment 1, external wearing device including with the external magnetic part 2 that magnetism movable block 1 corresponds, the magnetism of external magnetic part 2 is controllable, makes external magnetic part 2 with the magnetic force size and/or the direction that form between the magnetic movable block 1 are controllable, every magnetism movable block 1 all corresponds there is at least one external magnetic part 2. In the solution of this embodiment, the magnetism of the external magnetic member 2 may be controlled as required by controlling the strength and/or the direction of the magnetic field formed by the external magnetic member 2, so as to control the magnitude and/or the direction of the magnetic force formed between the external magnetic member 2 and the magnetic movable block 1.

In the wearable magnetomotive heart auxiliary power system of the embodiment, the magnetic movable block 1 is arranged on the heart, and the magnetic properties of the external magnetic part 2 of each item of vital sign and/or heart function data of a patient are related, namely, the magnetic field intensity and/or direction formed by the external magnetic part 2 is controlled in real time through the real-time vital sign/heart function data of the patient, so that the force application size and force application direction of the magnetic movable block 1 to the heart are controlled, and the effect of heart auxiliary power is further realized.

Furthermore, the heart comprises a left ventricle, a left atrium, a right ventricle and a right atrium, when the heart beats, the movements of each position of the heart have self uniqueness, and are not a mode of integrally contracting inwards and integrally expanding outwards simultaneously, if the same external magnetic field is adopted to control a plurality of internal magnets simultaneously, the differential movement control of each internal magnet is difficult to realize, and further, the differential power auxiliary effect which accords with the different movements of each part when the heart beats is difficult to form;

therefore, in the scheme of the application, each magnetic loose piece 1 is correspondingly provided with at least one external magnetic piece 2, so that each magnetic loose piece 1 can be independently controlled by the external magnetic piece 2 according to the requirement, the force application and direction of each magnetic loose piece 1 to the heart can be independently controlled according to the requirement, the motion control precision of the magnetic loose piece 1 is greatly improved, in addition, the differential power auxiliary effect of different motions of each part when the heart beats can be formed, more accurate power auxiliary is provided for different vital sign/heart function data, for example, for certain patients or certain moments, only the cardiac muscle at the left ventricle is applied to assist the left ventricle to pump blood into the ascending aorta, for certain patients or certain moments, only the cardiac muscle at the right ventricle is applied to assist the right ventricle to pump blood into the pulmonary artery, or the differential power auxiliary effect of the parts of the heart can be formed by simultaneously assisting the left ventricle and the right ventricle to pump blood into the ascending aorta or the pulmonary artery, in particular, the magnetic loose piece 1 can be used for providing more accurate power auxiliary for different vital sign/heart function data, for example, and the real-time auxiliary state is formed by the synergistic action of the magnetic loose pieces of the parts and the actual conditions of the patients.

As a preferred embodiment, based on the above manner, further, the magnetic movable blocks 1 are in one-to-one correspondence with the external magnetic members 2. By means of the one-to-one correspondence mode, the control precision of each magnetic movable block 1 is more accurate.

As a preferred embodiment, the external magnetic member 2 is a halbach array formed by arranging a plurality of magnet units, and as shown in fig. 3, the control of the magnetism of the external magnetic member 2 is realized by controlling the relative positions of the magnet units 3. The positions of the magnet units 3 are adjustable, a halbach magnet array is formed after a plurality of magnet units 3 are arranged according to a certain arrangement rule, for the same halbach magnet array, when the position of one or some magnet units 3 is changed, the magnetic field formed by the halbach magnet array is also changed, the control of the pressing strokes of different pressing forces and pressing force directions of the internal magnetic movable block 1 is further realized through the change, further, the vital sign/heart function data of a patient are related to the position data of each magnet unit 3, the position data of each magnet unit 3 are controlled through the vital sign/heart function data of the patient, and then the adjustment of the magnetic field of the halbach magnet array is realized, the control mode can be that the magnet units 3 of the halbach magnet array are placed on a supporting device, a driving device 5 capable of adjusting the positions and/or the magnetic pole directions of the magnet units 3 is arranged, the driving device 5 is in communication connection with a microcomputer 6 provided with a control program, the vital sign/heart function data of the patient enters the microcomputer 6, and after the control mechanism is controlled, the position and/or the magnetic pole directions of the magnet units 3 are correspondingly adjusted; further, for the halbach magnet sequence, compared with the traditional magnet, when the magnetic field with the same intensity is formed, the material can be greatly reduced, the weight of the wearing device of the patient can be greatly reduced, and the comfort of the patient is improved;

Particularly, in the daily activities of the patient, the body is in an active state, the risk of unstable positions of the external wearing device, such as up-and-down reciprocating shaking of the positions, even integral displacement, of the external wearing device can affect the internal magnetic movable block 1, the problem of uncontrollable fluctuation of the internal magnetic movable block 1 in applying force to the heart occurs, auxiliary power failure occurs when serious, even treatment accidents caused by the incorrect application of force to the internal magnetic movable block 1 occur, so that in the scheme of the application, when the external magnetic part 2 adopts the halbach magnet sequence, the weight of the external magnetic part is greatly reduced, the external wearing device can maintain better position stability, the accuracy and stability of the application of force to the internal magnetic movable block 1 are improved, and particularly the occurrence risk of the accidents is greatly reduced.

As a preferred embodiment, based on the above manner, the external wearing device further includes a binding member 22, the binding member 22 is used for fixing the external magnetic member 2 on the human body, and the binding member 22 is a binding structure adapted to the body shape of the user, for example, is in a clothing shape.

As a preferred embodiment, further, based on the above manner, the extracorporeal wearable apparatus further includes a support 4, and the extracorporeal magnetic member 2 is disposed on the support 4. Through the setting of support, support external magnetic part 2, on the one hand is the accurate control of assurance external magnetic part 2 position, on the other hand, when adopting halbach array, make things convenient for each magnet unit 3 to be arranged according to this sequence reliably.

As a preferred embodiment, on the basis of the above mode, further, a driving device 5 is further arranged on the support 4 corresponding to each magnet unit 3, and the driving device 5 is used for driving the magnet units 3 to move or rotate. The driving device 5 is in communication connection with a microcomputer 6. The microcomputer 6 is used for carrying out independent control on each magnet unit 3 through a control program according to the acquired vital sign data of the patient, and in such a way, each magnet unit 3 can be independently controlled, so that the overall magnetic field intensity and direction of the halbach array are controlled.

As a preferred embodiment, further on the basis of the above-described manner, a recess for accommodating the magnet unit 3 is provided on the holder 4, the recess side wall being slidably fitted with the side wall of the magnet unit 3. On the one hand, the installation of the individual magnet units 3 is facilitated and the positional stability of the magnet units 3 can be ensured.

As a preferred embodiment, in the above-described mode, further, the depth of the groove is larger than the height of the magnet unit 3 in the direction toward the heart, so that a movable space is formed between the end of the magnet unit 3 and the end of the groove. By forming the active space, the driving device 5 is enabled to drive the magnet unit 3 to move in a direction toward or away from the heart. By adopting the mode, on one hand, the movable degree of freedom of the magnet unit 3 is further improved, the optional range of the magnetic field formed by the external magnetic part 2 is further expanded and enriched, and on the other hand, the external magnetic part 2 can also move in the direction towards and away from the heart, so that the control of the force application of the internal magnetic movable block 1 is realized, the power replication mode which can be provided by the power system is further increased, and the control accuracy of auxiliary power is further improved.

As a preferred embodiment, in addition to the above-described embodiment, the driving device 5 may be further configured to drive the magnet unit 3 to rotate, so as to deflect the magnetic pole direction of the magnet unit 3. In this way, when the magnetic pole direction of one or a plurality of magnet units 3 is deflected, the adjustment of the magnetic field intensity and direction of the magnetic field of the whole halbach array is further realized.

As a preferred embodiment, on the basis of the above manner, further, the driving device 5 is a linear motor or a rotating motor, for example, a micro linear motor or a micro rotating motor, when the linear motor is adopted, the external magnetic piece 2 is integrally pushed to move towards or away from the heart by the linear motor, so as to apply force to the magnetic movable block 1 in the patient, when one or some magnetic units independently move towards or away from the heart, the magnetic field intensity and/or direction of the whole halbach magnet array can be changed, the force application size control of the magnetic movable block 1 is also realized, and when the rotating motor is adopted, the rotating output shaft of the rotating motor is connected with the magnet unit 3, the magnetic pole direction of the magnet unit 3 can be adjusted, and further the magnetic field intensity and/or direction of the halbach magnet array can be adjusted.

As a preferred embodiment, the external magnetic member 2 adopts an electromagnet mode, and the magnetic control of the external magnetic member 2 is realized by controlling the magnitude and the direction of the current flowing into the electromagnet 17. In the current technical level, the electromagnet has a simple structure and mature and reliable technology, and in the scheme of the application, the electromagnet is adopted as the external magnetic part 2, so that the system manufacturing cost and the later maintenance cost can be greatly reduced.

As a preferred embodiment, the wearable magnetomotive heart assist power system further comprises a sensor 7 and a microcomputer 6, wherein the sensor 7 is in communication connection with the microcomputer 6, the microcomputer 6 is electrically connected with the external magnetic member 2, the sensor 7 is used for monitoring vital sign data of a patient, and the vital sign data include but are not limited to: the microcomputer 6 is used for controlling the current parameter input into the external magnetic part 2 in real time according to the data acquired by the sensor 7, so that the magnetic movable block 1 positioned in the patient generates the needed magnetic force. The current parameter is the magnitude and/or direction of the current. In the solution of the present embodiment, the type and the setting position of the sensor 7 are selected and arranged according to the required data type, which is a reasonable selection arrangement that can be performed by a person skilled in the art in a more practical need, and will not be described in detail in the present embodiment.

As a preferred embodiment, based on the foregoing manner, further, the microcomputer 6 has a preset program, where the preset program is: by taking the heart pulse period related normal parameters as a reference target and monitoring vital sign data of a patient in real time, when related indexes are abnormal (for example, heart function data are reduced), a preset program controls the magnetic field of the external magnetic part 2 so as to provide power assistance, so that the heart function of the patient is improved, the work of the heart is improved, and the blood supply of important viscera caused by the daily activities of the patient is met.

As another preferred embodiment, the microcomputer 6 has a preset program therein, and the preset program is: by taking the long-term prognosis of a patient as a reference target and through real-time monitoring of vital sign data of the patient, the magnetic field of the external magnetic part 2 is controlled according to the treatment opinion of doctors on the individual patient, so that the internal magnetic movable block 1 provides a heart pressing mode which meets the treatment target of the patient. In this way, it is possible to improve the heart function of the patient and further improve its long-term prognosis by applying a compression regime to the patient's heart that is in accordance with the desires of the physician, possibly with compression forces and/or frequencies that are higher and/or lower than the normal human heart beat forces and frequencies.

As another preferred embodiment, the microcomputer 6 has a preset program therein, and the preset program is: by taking the short-term heart work of the patient as a reference target and through real-time monitoring of vital sign data of the patient, the magnetic field of the external magnetic part 2 is controlled according to the treatment opinion of a doctor on the individual patient, so that the internal magnetic movable block 1 provides a pressing mode of the heart of the patient, which meets the treatment aim of the doctor. For some patients with serious cardiac structural function damage and short life expectancy, if the power assistance is provided according to the normal cardiac pulsation data of the human body as the basis of the setting related parameters, the excessive pressing force or the excessive frequency may exist to cause the heart to be difficult to bear, under the condition, the magnetic field of the external magnetic part 2 is controlled according to the treatment opinion of a doctor, so that the internal magnetic movable block 1 provides lower pressing force and pressing frequency which are suitable for the illness state of the patient, and the damage to the iatrogenicity of the heart of the patient caused by the excessive force or the excessive pressing frequency is avoided while the vital sign of the patient is maintained.

In the microcomputer 6 of the above embodiment, the preset program is designed according to different requirements of the treatment mode and the treatment target, and the desired force application action can be achieved by matching the vital sign data of the patient with the action of the in-vivo magnetic movable block 1 through the program design, so that the program design process is not repeated in this embodiment.

As a further preferred embodiment, on the basis of any one of the above modes, the device further comprises a standby program controller, wherein a control program identical to a program preset in the microcomputer 6 is preset in the standby program controller, the standby program controller is in communication connection with the sensor 7 and the external magnetic member 2 and is electrically connected with the external magnetic member 2, and when the micro brain is in a normal starting state, the standby program controller is in a shutdown state; when the microcomputer 6 is stopped, the standby program control instrument is started and replaces the microcomputer 6 to control the current of the magnetic part of the magnet 17 according to the signal of the sensor 7. In this embodiment, the standby program control apparatus is connected in parallel with the microcomputer 6, so that the standby program control apparatus can still provide auxiliary power when the microcomputer 6 is in fault or in maintenance or in program update or parameter adjustment, as a standby for the microcomputer 6 when the microcomputer is stopped, and the patient safety is ensured.

As a preferred embodiment, the wearable magnetomotive heart assist power system further comprises a power source 8, wherein the power source 8 is used for supplying power to the microcomputer 6, the sensor 7 and the external magnetic member 2. The power source 8 may be a secondary battery or a rechargeable battery, or may be a socket or plug connected to the external power source 8 and capable of converting ac power into dc power.

As a further preferred embodiment, the wearable magnetomotive heart assist power system further comprises a display device, wherein the display device is used for displaying the data monitored by the sensor 7 and/or the motion data of the magnetic movable block 1, and by setting the display device, the patient and/or the relative and/or the medical care can directly observe the real-time vital sign data of the patient and the related index of the operation of the device.

As a preferred embodiment, the display device further comprises an alarm device, and the alarm device alarms when the data monitored by the sensor 7 are obviously abnormal. The obvious abnormality means that certain vital sign data or certain vital sign data of a patient are compared with vital sign data of a normal human body, and an alarm device alarms when the data deviation exceeds the set difference by setting the comparison difference.

As a further preferred embodiment, a memory unit is also provided on the display device, which memory unit is used for storing data monitored by the sensor 7 and/or movement data of the magnetic loose piece 1.

As a further preferable embodiment, the display device is further provided with a data reading port for reading the data inside the storage unit or a data transmission module for wirelessly transmitting the data inside the storage unit.

As a further preferred embodiment, the display device is a wristwatch type structure arranged on the wrist of the patient.

As a preferred embodiment, the sensor 7 is arranged outside the patient's body or in the body surface skin or in a tissue under the body surface skin. The sensor 7 is arranged in the tissue of the patient outside or behind the skin of the body surface of the patient, and the positions firstly facilitate the arrangement of the sensor 7, compared with the mode that the sensor 7 is arranged in the body, the placement difficulty of the sensor 7 is greatly reduced, the power supply 8 is not required to be introduced into the patient for the work of the sensor 7, the power supply to the sensor 7 can be conveniently realized, and the later maintenance, the better work and the like can be conveniently carried out.

As a further preferred embodiment, the sensor 7 is arranged partly or wholly in the precordial region outside the patient's body and/or in the inter-cardiac region outside the patient's body and/or in the subcutaneous tissue at the left edge of the substernal section and/or in the extra-cardiac adipose tissue of the in-vivo pericardium and/or between the pericardium layers. The placement of the sensor 7 at these locations, and above all the accurate patient vital sign data, in particular the heart area data, is possible, greatly improving the accuracy of the system of the present embodiment, and the placement of the sensor 7 in the body also avoids the risk of displacement of the sensor 7 due to daily activities.

As a preferred embodiment, as shown in fig. 4, the magnetic loose piece 1 is sewn on the outer wall of the heart by stitching.

As a further preferred embodiment, a connection 9 is provided on the magnetic loose piece 1, said magnetic loose piece 1 being connected to the outer wall of the heart by means of said connection 9.

In the scheme of the embodiment, the magnetic movable block 1 is directly sutured on the heart of the area needing power assistance, firstly, the position stability of the magnetic movable block 1 is well ensured, and when the heart contraction force is insufficient and the pressing power assistance is needed, the external magnetic part 2 provides the same magnetic pole to apply thrust to the magnetic movable block 1, namely, the assistance of the pressing power is realized; in particular, when there is a diastole deficiency, the system of the application is adopted, the external magnetic piece 2 provides a magnetic pole direction opposite to the internal magnetic movable block 1, and suction force is applied to the internal magnetic movable block 1, so that the auxiliary of diastole is realized, the auxiliary of heart pulsation of a patient is further facilitated, and the rehabilitation training of heart functions of the patient is particularly facilitated.

As a further preferable embodiment, the magnetic loose piece 1 is coated with a biocompatible film layer.

The above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present invention; all technical solutions and modifications thereof that do not depart from the spirit and scope of the invention are intended to be included in the scope of the appended claims.

Claims

1. An in-vivo assembly for a magnetomotive heart assist power system, characterized by: the heart-protecting device comprises a movable block support and at least one magnetic movable block with magnetism, wherein the movable block support is used for supporting the magnetic movable block, the relative position of the movable block support and a heart is fixed, and the magnetic movable block is movably connected with the movable block support, so that the magnetic movable block can move in a direction towards and/or away from the heart;

the movable block support is provided with a notch for placing the magnetic movable block, and the notch is in slidable fit with the magnetic movable block.

2. The in-vivo assembly according to claim 1, wherein: the number of the magnetic movable blocks is at least two.

3. The in-vivo assembly according to claim 1, wherein: the movable block support is of a shell structure coated outside the heart, the shape of the inner side wall of the movable block support is matched with the shape of the heart during diastole filling, and a stabilizing piece used for fixing the shell on the heart is further arranged on the shell.

4. The in-vivo assembly according to claim 1, wherein: the loose-piece support adopts a bag structure made of flexible materials, so that the loose-piece support can relax along with the relaxation of the heart.

5. The in-vivo assembly according to claim 4, wherein: the magnetic loose piece is arranged on the outer side of the loose piece support.

6. The in-vivo assembly according to claim 5, wherein: the bag body corresponding to the magnetic movable block is of a double-layer structure, and the magnetic movable block is wrapped in the double-layer structure.

7. The in-vivo assembly according to claim 6, wherein: at least one notch is arranged on the movable block support corresponding to the left ventricle and/or the right ventricle of the heart.

8. The in-vivo assembly according to claim 6, wherein: the movable block support is provided with a plurality of notches, so that the movable block support is of a grid-shaped shell structure.

9. The in-vivo assembly according to claim 8, wherein: the adjacent magnetic loose pieces are in clearance fit, and the clearance width between the adjacent magnetic loose pieces ensures that the adjacent magnetic loose pieces do not block the movement towards the heart and the direction away from the heart.

10. The in-vivo assembly according to any one of claims 6-9, wherein: the edge of the magnetic loose piece and the edge of the notch are connected with a flexible membrane with biocompatibility, and the flexible membrane is used for preventing the magnetic loose piece from falling off from the loose piece support.

11. The in-vivo assembly according to claim 10, wherein: when the inner side edge of the magnetic loose piece is flush with the inner side edge of the notch, the flexible film is in a wrinkled state, and the wrinkled amount of the flexible film provides a moving stroke towards the heart direction for the magnetic loose piece.

12. The in-vivo assembly according to claim 10, wherein: the flexible film has elasticity, and when the inner side edge of the magnetic loose piece is flush with the inner side edge of the notch, the flexible film is in a natural stretching state.

13. The in-vivo assembly according to claim 10, wherein: the flexible film is arranged on the outer sides of the movable block support and the magnetic movable block.

14. The in-vivo assembly according to any one of claims 6-9, wherein: the elastic membrane with elasticity and biocompatibility is arranged on the notch, the magnetic movable block is arranged on the elastic membrane and has an initial position, when the magnetic movable block is positioned at the initial position, one side of the magnetic movable block, which faces towards the heart, is contacted with the side wall of the heart in a diastole state, and the elastic membrane is in a natural stretching state.

15. The in-vivo assembly according to claim 14, wherein: the magnetic movable block comprises a pressing part and a magnetic part with magnetism, and the magnetic part is arranged on one side of the pressing part, which is away from the heart.

16. The in-vivo assembly according to claim 15, wherein: the magnetic part comprises a mounting seat and a magnet arranged on the mounting seat, and the mounting seat is arranged on one side of the pressing part, which is away from the heart.

17. The in-vivo assembly according to claim 16, wherein: the utility model discloses a movable block support, including breach, movable block support, magnetic part, breach, pressure part edge, magnetic part, breach, movable block support, magnetic part, wherein the breach is close to one side of heart for the big mouth of size great, and the one side of keeping away from the heart is for the tiny hole of size less for the size, press the part edge with big mouthful lateral wall slidable cooperation, magnetic part is located in the tiny hole, perhaps, magnetic part is by tiny hole stretches out outside the movable block support.

18. The in-vivo assembly according to claim 16, wherein: the mounting seat wraps the magnet, and only the end face of the magnetic pole, facing the outside of the patient body, of the magnet is exposed.

19. The in-vivo assembly according to claim 16, wherein: the notch edge in the outer side of the movable block support is provided with an annular guide cylinder which is in sliding fit with the side wall of the magnetic part to support and guide the magnetic part and prevent the magnetic movable block from falling off from the movable block support.

20. The in-vivo assembly according to claim 16, wherein: the outer wall of the mounting seat and/or the outer wall of the pressing part is coated with a magnetism isolating material layer, and the magnetism isolating material layer is covered on the magnetism isolating material layer.

21. A magnetomotive heart assist power system, characterized by: the external wearing device comprises an external magnetic piece corresponding to the magnetic movable block, wherein the magnetism of the external magnetic piece is controllable, so that the size and/or the direction of magnetic force formed between the external magnetic piece and the magnetic movable block are controllable, and each magnetic movable block corresponds to at least one external magnetic piece.