CN215387017U - Heart auxiliary pressing assembly and magnetomotive heart auxiliary power system - Google Patents

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a heart auxiliary pressing component and a magnetomotive heart auxiliary power system. The heart of this application is supplementary presses subassembly, through the mode of support with the magnetism loose piece setting on the heart, can reduce the magnetism loose piece and the heart be connected the degree of difficulty by a wide margin, the setting of flexible membrane avoids the magnetism loose piece to drop from the loose piece support, avoids because of the magnetism loose piece drops the medical accident that leads to.

Description

Heart auxiliary pressing assembly and magnetomotive heart auxiliary power system

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a heart auxiliary pressing component and a magnetomotive heart auxiliary power system.

Background

Under normal conditions of a human body, the sinoatrial 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 all parts of the heart through a myocardial nervous system, so that the myocardium is periodically contracted and expanded, and blood is pumped to the whole body.

Heart failure is a clinical syndrome in which structural or functional abnormalities of the heart lead to an impaired ability of the ventricles to contract or relax, causing a series of pathophysiological changes. When heart failure occurs, the systolic blood pulsation capability of the heart is reduced, the compliance of the ventricle in diastole is reduced, the active filling is obviously reduced, the change rate of the systolic volume is reduced, a large amount of blood is remained in the heart, the pressure of the ventricle in diastole is increased, the heart chamber is deformed and expanded, the oxygen consumption of the myocardium is obviously increased, and the myocardial contraction efficiency is obviously reduced.

At present, the treatment for heart failure patients usually adopts medicine and heart resynchronization therapy, and for end-stage heart failure patients, the treatment effect is difficult to achieve only through the medicine, and the ventricular assist device becomes a necessary option in treatment means.

With regard to the present ventricular assist device, its core principle is through installing the pump body on patient's heart, through pump body pump blood, and then solve the problem that heart failure patient pump blood ability is not enough, though this kind of mode has been in the relatively extensive use of europe and america country, but in further clinical treatment work and research and development work, utility model people discover, such mode still has not enough, specifically lies in: when the heart auxiliary device is installed, the ends of the pump body blood inflow and outflow pipelines are required to be directly inserted into the left ventricle and the ascending aorta respectively, so that the problems of large wound, large operation difficulty, high risk and the like are solved; moreover, the direct contact of the pump body and the heart pump and the direct contact of the inside and the outside of the body of the ventricular assist device can easily cause complications such as infection, hemorrhage, thrombosis and the like; in particular, the problems of failure risk and service life of the pump body structure need to be further considered.

In order to solve the above problems, the utility model provides a chinese utility model patent application, the utility model name is submitted in 2019 on 22 days 8 months: a magnetomotive ventricular assist system, application 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 ventricle motion sensors and a plurality of hemodynamic sensors; the magnetic power device consists of a wearable coil, a power supply and a controller; the controller is used for adjusting current parameters in the wearable coil in real time according to the ventricular motion parameters and the hemodynamic parameters to generate adaptive magnetic power; the magnetic induction sheet generates driving force for assisting the beating of the left ventricle and/or the right ventricle according to the magnetic power device. In the utility model discloses an among the patent scheme, magnetomotive force ventricle auxiliary system can realize the non-direct contact with blood through the mode of external magnetic induction device with magnetomotive force device, has avoided risks such as wire winding, infection, hemorrhage, thrombosis, has improved end stage heart failure patient survival rate and quality of life.

In further research and development work, the utility model people discover, how to improve the accurate nature that magnetic induction piece action is controlled, still need further optimization urgently, and based on this, this application provides the magnetomotive heart auxiliary power system of wearing formula.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the wearable device is used for solving the problem that the action of a magnetic induction sheet is not easy to control accurately when the magnetic induction sheet of the conventional heart auxiliary power device is controlled by a magnetic field, and the wearable device is provided.

In order to realize the purpose of the utility model, the utility model provides the following technical scheme:

the utility model provides a heart is assisted and is pressed subassembly, includes loose piece support and at least one magnetism loose piece that has magnetism, the loose piece support is used for supporting the magnetism loose piece, the magnetism loose piece with be mobilizable connection between the loose piece support, make the magnetism loose piece can move about in the orientation and/or the direction that deviates from the heart the magnetism loose piece with be connected with flexible membrane between the loose piece support, flexible membrane is used for preventing the magnetism loose piece by drop on the support.

Preferably, a notch is formed in the loose piece support, the magnetic loose piece is arranged in the notch, and the flexible membrane is connected between the magnetic loose piece and the notch.

Preferably, 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 folded state, and the folding amount of the flexible film provides a moving stroke towards the heart direction for the magnetic loose piece.

Preferably, the flexible membrane has elasticity, and when the inboard edge of magnetism loose piece was along with the inboard edge of breach parallel and level, the flexible membrane was the natural state of stretching out.

Preferably, the magnetic loose piece is connected with the cardiac muscle by means of suture.

Preferably, the flexible membrane is disposed outside the loose piece holder and the magnetic loose piece.

Preferably, the magnetic living block has an initial position, when the magnetic living block is located at the initial position, the side of the magnetic living block facing the heart is in contact with the side wall of the heart in the diastolic state, and the flexible membrane is in a natural stretching state.

As a further preferred embodiment, the flexible membrane closes the gap.

The application also discloses a magnetomotive heart auxiliary power system which comprises the heart auxiliary pressing component.

Preferably, the external magnetic device is arranged outside the body of the patient, the external magnetic device comprises an external magnetic part corresponding to the magnetic loose piece, the magnetism of the external magnetic part is controllable, so that the magnitude and/or direction of the magnetic force formed between the external magnetic part and the magnetic loose piece is controllable, and each magnetic loose piece corresponds to at least one external magnetic part.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the heart auxiliary pressing assembly, the magnetic loose pieces are arranged on the heart in a support mode, so that the connection difficulty of the magnetic loose pieces and the heart injury caused by the connection of the magnetic loose pieces can be greatly reduced, further, the injury to the heart is only determined by the arrangement of the support, more magnetic loose pieces are arranged, the heart auxiliary pressing assembly is more beneficial to different power assistance of different positions of the heart, and the control precision of the heart auxiliary power is greatly improved due to the increase of the number of the magnetic loose pieces;

2. in one embodiment, each magnetic movable block corresponds to at least one external magnetic part, 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 the heart beating can be formed, and particularly, more accurate power assistance is provided for different vital signs/heart function data; but also can be the magnetic active block synergistic action of a plurality of parts, and by the way, a plurality of power assistance which is consistent with the actual state of illness and real-time cardiac function state of the patient is formed;

3. in some embodiments, the flexible membrane is arranged to prevent the magnetic loose piece from falling off from the loose piece bracket, so that medical accidents caused by the falling of the magnetic loose piece are avoided;

4. in some embodiments, an elastic membrane with elasticity and biocompatibility is arranged on the bracket gap, the magnetic loose piece is arranged on the elastic membrane, the magnetic loose piece has an initial position, when the magnetic loose piece is located at the initial position, one side of the magnetic loose piece facing to the heart is in contact with the heart side wall in the diastole state, and the elastic membrane is in a natural stretching state. In the embodiment, the elastic membrane is arranged on the notch, and then the magnetic loose piece is arranged on the elastic membrane, when the external magnet assembly applies thrust to the magnetic loose piece, the magnetic loose piece overcomes the elasticity of the elastic membrane to perform pressing power assistance on the heart, and when the magnetic field of the external magnetic piece is eliminated, the magnetic loose piece 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 of the external assembly are greatly reduced;

5. in some of the embodiments, the magnetic loose piece comprises a pressing part and a magnetic part with magnetism, and the magnetic part is arranged on the side of the pressing part facing away from the heart. In the mode, the pressing part is made of conventional materials with biocompatibility, the structure of the pressing part is matched with the shape of the heart, the magnetic loose piece is provided with the pressing part and the magnetic part, the magnetic part is made of magnetic materials, and the magnetic part is manufactured in a way that the whole magnetic loose piece is a magnet; on the other hand, the shape of the magnet with a conventional structure can be adopted, the formed magnetic field is more regular, and the difficulty of manufacturing the magnet and the difficulty of controlling the external magnetic field are greatly reduced.

Description of the drawings:

FIG. 1 is a schematic block diagram of one embodiment of a magnetomotive heart assist power system of 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 view of a configuration of an off-magnet magnetic element in one 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 loose piece carrier according to an embodiment of the present application;

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

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

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

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

FIG. 10 is a schematic view of a portion of a magnetic loose piece engaged with a loose piece holder in a bag-like configuration according to an embodiment of the present disclosure;

FIG. 11 is a schematic view of a portion of a magnetic loose piece engaged with a loose piece holder according to an embodiment of the present application;

FIG. 12 is a schematic view of a portion of a magnetic loose piece engaged with a loose piece holder according to an embodiment of the present application;

FIG. 13 is a schematic view of a portion of a magnetic loose piece engaged with a loose piece holder according to an embodiment of the present application;

FIG. 14 is a schematic view of a portion of a magnetic loose piece engaged with a loose piece holder according to an embodiment of the present application;

FIG. 15 is a schematic view of a portion of a magnetic loose piece engaged with a loose piece holder according to an embodiment of the present application;

FIG. 16 is a schematic view of a portion of a magnetic loose piece engaged with a loose piece holder 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 portion of a loose piece carrier notch according to an embodiment of the present disclosure;

FIG. 19 is a partial structural view of a guide cylinder disposed at a notch of a loose piece holder according to an embodiment of the present application,

the following are marked in the figure: 1-magnetic movable block, 2-external magnetic piece, 3-magnet unit, 4-support, 5-driving device, 6-microcomputer, 7-sensor, 8-power supply, 9-connecting part, 10-movable block support, 11-fixing piece, 12-notch, 13-flexible membrane, 14-elastic membrane, 15-pressing part, 16-mounting seat, 17-magnet, 18-large opening, 19-small opening, 20-magnetic isolating material layer, 21-guide cylinder and 22-binding piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.

Thus, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model as claimed, but is merely representative of some embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments of the present invention and the features and technical solutions thereof may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Example 1, as shown in figures 1-19:

a heart auxiliary pressing assembly comprises a loose piece support 10 and at least one magnetic loose piece 1 with magnetism, wherein the loose piece support 10 is used for supporting the magnetic loose piece 1, a flexible membrane 13 is connected between the magnetic loose piece 1 and the loose piece support 10, and the flexible membrane 13 is used for preventing the magnetic loose piece 1 from falling off the support 10. In the scheme of this embodiment, the magnetic loose piece 1 is arranged on the heart by means of a stent, and the stent can be implanted and fixed outside the heart in a minimally invasive manner on the premise of convenience and no excessive damage, such as: the fundus or apex, or fixed to other tissues, such as: the relative position of the aortic root and the loose piece bracket 10 and the heart is fixed, and the magnetic loose piece 1 is movably arranged on the loose piece bracket 10, so that the connection difficulty of the magnetic loose piece 1 and the heart injury caused by the connection of the magnetic loose piece 1 can be greatly reduced, further, the arrangement of a larger number of magnetic loose pieces 1 becomes practical because the injury to the heart is only determined by the arrangement of the loose piece bracket 10, the different power assistance to different positions of the heart is more facilitated, and the control precision of the auxiliary power to the heart is also greatly improved because the number of the magnetic loose pieces 1 is increased; the flexible membrane 13 is arranged to prevent the magnetic loose piece 1 from falling off from the loose piece bracket 10, and medical accidents caused by the falling of the magnetic loose piece are avoided.

In a preferred embodiment, a notch 12 is provided on the loose piece holder 10, the magnetic loose piece 1 is disposed in the notch 12, and the notch 12 is slidably engaged with the magnetic loose piece 1. With magnetism loose piece 1 setting in breach 12, magnetism loose piece 1 can move in the direction towards the heart and deviate from the heart, when external magnetic member 2 was used, realizes pressing this magnetism loose piece 1 department heart, and the setting of breach 12 can also form the support to magnetism loose piece 1 in vertical, reduces magnetism loose piece 1 and appears the risk that drops because of dead weight and patient daily activity.

In a preferred embodiment, the flexible membrane 13 is connected between the magnetic loose piece 1 and the notch 12.

As a preferred embodiment, as shown in fig. 12, when the inner side edge of the magnetic loose piece 1 is flush with the inner side edge of the notch 12, the flexible membrane 13 is in a folded state, and the amount of folding of the flexible membrane 13 provides the magnetic loose piece 1 with a moving stroke towards the heart direction.

As another preferred embodiment, as shown in fig. 13, the flexible film 13 has elasticity, and 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 natural stretching state. By adopting the mode, the flexible membrane 13 prevents the magnetic loose piece 1 from falling off from the heart, and meanwhile, when the magnetic loose piece 1 moves towards the heart direction and provides pressing power assistance to the heart area, when the magnetic loose piece 1 is pressed in place, the flexible membrane 13 enables the magnetic loose piece 1 to reset through the elasticity of the flexible membrane 13, namely, in the embodiment, the resetting of the magnetic loose piece 1 is provided by the flexible membrane 13, and the external component is not required to provide a corresponding magnetic field to reset the magnetic loose piece 1.

As a further preferred embodiment, the magnetic loose piece 1 is connected to the myocardium by means of suturing, as shown in fig. 4. When magnetism loose piece 1 is connected through sutural mode and myocardium, can directly avoid magnetism loose piece 1 to break away from the risk of aversion, moreover, as above-mentioned, when the heart exists the diastole not enough, adopt the system of this application, external magnetism spare 2 provides and the opposite magnetic pole direction of internal magnetism loose piece 1, gives suction to internal magnetism loose piece 1, or the reset force that the elastic membrane provided, has still realized the assistance to diastole, further does benefit to the assistance to patient's heart beat.

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

In a preferred embodiment, at least one notch 12 is provided on the loose piece support 10 corresponding to the left ventricle of the heart. When the contraction function of the left ventricle of the heart of the patient is reduced, the left ventricle is provided with pulsating auxiliary power through the magnetic live block 1.

In a preferred embodiment, at least one notch 12 is provided on the loose piece support 10 corresponding to the right ventricle of the heart. When the right ventricle of the heart of the patient has the reduced contraction function, the magnetic movable block 1 provides the pulsating auxiliary power for the right ventricle.

In a preferred embodiment, the loose piece support 10 is provided with a plurality of notches 12, so that the loose piece support 10 forms a grid-like shell structure. In such a way, a plurality of notches 12 are formed on the loose piece bracket 10, and a plurality of magnetic loose pieces 1 are formed on the periphery of the heart, so that the actions of the magnetic loose pieces 1 in the required area can be controlled according to the actual disease condition of the patient, thereby further realizing the accurate control of the auxiliary power of the heart and greatly increasing the adaptability of the patient with different disease conditions.

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

As a preferred embodiment, as shown in fig. 14, an elastic membrane 14 having elasticity and biocompatibility is disposed on the gap 12, the magnetic loose piece 1 is disposed 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 is in contact with a heart side wall in a diastolic state, and the elastic membrane 14 is in a natural stretching state. In the embodiment, the elastic membrane 14 is disposed on the notch 12, then the magnetic loose piece 1 is disposed on the elastic membrane 14, when the external magnetic body 17 assembly applies a pushing force to the magnetic loose piece 1, the magnetic loose piece 1 overcomes the elastic force of the elastic membrane 14 to perform a pressing power assistance on 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 elastic force of the elastic membrane 14, as described above, such a manner greatly reduces the control requirement and the control difficulty for the external assembly.

As a further preferred embodiment, the elastic membrane 14 closes the gap 12. On one hand, the uniform magnetic loose piece 1 is stressed in the circumferential direction, and on the other hand, the shell forms a closed space, which is beneficial to protecting the heart.

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 is arranged 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 the elastic membrane 14 is in contact with the heart, the surface smoothness of the elastic membrane 14 is easy to control, the manufacturing requirement of the surface smoothness of the magnetic loose piece 1 is greatly reduced, further, the elastic membrane 14 is made of a flexible material, certain buffering 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 with magnetism, and the magnetic portion is disposed on a side of the pressing portion 15 facing away from the heart. In the mode, the pressing part 15 is made of a conventional material with biocompatibility, the structure of the pressing part is matched with the shape of the heart, the magnetic loose piece 1 is provided with the pressing part 15 and the magnetic part, the magnetic part is made of a magnetic material, and when the magnetic part is manufactured, compared with a mode that the whole magnetic loose piece 1 is a magnet 17, the mode of the scheme has the advantages that on one hand, the production of the magnetic part can be carried out by adopting a normal production mode of the magnet 17, the special shape of the heart does not need to be considered for adjustment, and higher requirements do not need to be considered for contacting 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, the formed magnetic field is more regular, and the manufacturing difficulty of the magnet 17 and the difficulty of controlling the external magnetic field are greatly reduced.

As a further preferred embodiment, the magnetic part is coated with a layer of biocompatible material.

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, and the requirement for manufacturing the magnet 17 is reduced.

As a further preferred embodiment, the magnet 17 is a permanent magnet 17 or a halbach array magnet 17. By adopting the permanent magnet 17, the service life of the system can be greatly prolonged, and the replacement frequency of the magnetic loose piece 1 in the body is reduced; when the halbach array magnet 17 is adopted, compared with the traditional magnet 17, when a magnetic field with the same strength is formed, the material of the magnet 17 can be greatly reduced, the weight of the magnetic loose piece 1 of the patient can be greatly reduced, the stability of the heart position of the patient is improved, and the displacement risk of the magnetic loose piece 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 sidewall 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 far from the heart is a small opening 19 with a smaller size, the edge of the pressing portion 15 is slidably engaged with the sidewall of the large opening 18, and the magnetic portion is located in the small opening 19, or the magnetic portion extends out of the loose piece holder 10 from the small opening 19. Through the mode, 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 loose piece and the external magnet 17 is shortened, the requirement on the external magnetic field intensity is further reduced, particularly, the magnetic field interference formed by the rest external magnets 17 is reduced, and the controlled precision of the magnetic loose piece 1 is further improved.

In a further preferred embodiment, the mounting base 16 is provided with a slot for holding 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 from the installation seat 16.

In a further preferred embodiment, the mounting base 16 covers the magnet 17 and exposes only a magnetic pole end face of the magnet 17 facing the outside of the patient. In this way, the reliability of the installation of the magnet 17 is further improved, the influence of the material of the installation seat 16 on the magnetic field between the magnet 17 of the magnetic loose piece 1 and the external magnetic unit is avoided, particularly, the annular periphery of the magnet 17 is coated, the magnetic field interference between the magnet 17 and the rest of the magnet 17 and the external non-corresponding magnetic part can be reduced,

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

As a further preferred embodiment, the outer wall of the pressing portion 15 is covered with a magnetic-isolating material layer 20. As mentioned above, the magnetic field interference between the rest of the magnets 17 and the non-corresponding magnetic member outside the body is further isolated.

In a preferred embodiment, an annular guide tube 21 is disposed at the edge of the notch 12 outside the loose piece holder 10, and as shown in fig. 19, the guide tube 21 is slidably engaged with the side wall of the magnetic part to support and guide the magnetic part and prevent the magnetic loose piece 1 from falling off the loose piece holder 10.

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

In a preferred embodiment, the loose piece support 10 and/or the flexible membrane 13 and/or the elastic membrane 14 and/or the pressing part 15 are made of biocompatible materials.

In another preferred embodiment, the loose piece support 10 is a shell structure covering the heart, the shape of the inner side wall of the loose piece support 10 matches the shape of the loose piece support during diastolic filling, and a fixing member 11 for fixing the shell on the heart is further provided on the shell. The shape of the inner side wall of the loose piece bracket 10 is matched with the shape of the loose piece bracket during diastole, so that the blockage of the loose piece bracket 10 to the heart pulsation is avoided.

In a preferred embodiment, the loose piece support 10 is a bowl-shaped shell structure with an open upper end, and the shape of the loose piece support 10 is matched with the shape of the heart, and is similar to a coconut shape or a litchi shell shape. The loose piece bracket 10 with the structure can be conveniently coated outside the heart, and the magnetic loose pieces 1 can be arranged at a plurality of parts of the heart, so that a more suitable power assisting scheme is provided for the hearts of patients in different states according to different heart function levels.

As a preferred embodiment, as shown in fig. 8, the loose piece support 10 is fixed on the heart by sewing, and the stabilizing member 11 is a sewing component, such as a suture, for sewing the loose piece support 10 on the heart. By means of sewing, the stent is reliably connected with the heart, a stable relative position fixing relation is formed, and normal power assistance work is guaranteed in the working process.

As a preferred embodiment, as shown in fig. 7, the loose piece bracket 10 is an openable structure including at least two flaps. Set up the loose piece support 10 into the suitable structure of opening of many lamellas form, when the installation, expand into the open mode with loose piece support 10, then closed cladding is on the heart again, and firm piece sets up between adjacent lamella body, then adopts firm piece 11 to connect each lamella loose piece support 10, and then to the installation of loose piece support 10, such mode can make on the one hand more laminating between loose piece support 10 and the heart, and on the other hand still makes the installation process of support cause the damage to the heart as far as possible.

As another preferred embodiment, as shown in fig. 9, the stabilizing member 11 is a band-shaped structure, and the stabilizing member 11 is disposed at the open end of the loose piece support 10 and surrounds the upper side of the heart to fix the loose piece support 10. In this way, the band-shaped stabilizing member 11 is wound around the heart or the tissue near the heart, so that the damage to the heart caused by the fixation of the loose piece support 10 can be reduced as much as possible.

As another preferred embodiment, as shown in fig. 7, the fixing member 11 is an anchoring protrusion disposed on the inside of the loose piece support 10, and the anchoring protrusion is embedded in the myocardium to fix the loose piece support 10.

In a further preferred embodiment, the anchoring projections are arranged at positions corresponding to the heart ventricular septum, and the anchoring projections engage in the ventricular septum of the heart to fix the loose piece holder 10.

As another preferred embodiment, as shown in fig. 10, the loose piece support 10 may also be a bag-shaped structure made of a flexible material, so that the loose piece support 10 can be relaxed along with the diastole of the heart, in this embodiment, the loose piece support 10 formed by the bag-shaped structure made of the flexible material can be placed in the human body in a contracted state due to its soft texture, so that the wound on the human body can be greatly reduced, which is more beneficial for recovery; moreover, the bag structure can be well attached to the heart during diastole and systole, so that the position precision of the magnetic loose piece 1 on the heart is ensured, and the precise 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.

In 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 covered in the double-layer structure.

In the above embodiment, the loose piece bracket 10 is made of a biocompatible material.

Example 2, as shown in figures 1-19:

a magnetic power heart auxiliary power system comprises a heart auxiliary pressing assembly in embodiment 1 and further comprises an external wearing device arranged outside a patient body, wherein the external wearing device comprises an external magnetic part 2 corresponding to a magnetic movable block 1, the magnetism of the external magnetic part 2 is controllable, so that the size and/or the direction of the magnetic force formed between the external magnetic part 2 and the magnetic movable block 1 are controllable, and each magnetic movable block 1 corresponds to at least one external magnetic part 2. In the scheme of this embodiment, the magnetism of the external magnetic member 2 is controllable such that the magnetic field strength and/or direction formed by the external magnetic member 2 can be controlled as required, thereby realizing controllable magnitude and/or direction of the magnetic force formed between the external magnetic member and the magnetic loose piece 1.

The wearing formula of this embodiment magnetomotive force heart auxiliary power system, magnetism loose piece 1 sets up on the heart, and is relevant through the magnetism with each item data external magnetic part 2 of patient vital sign and/or cardiac function, and the magnetic field intensity and/or the direction that external magnetic part 2 formed are controlled through patient's real-time vital sign/cardiac function data real time promptly, and then control magnetism loose piece 1 to the application of force size and the application of force direction of heart, and then realize the effect to heart auxiliary power.

Furthermore, the heart comprises a left ventricle, a left atrium, a right ventricle and a right atrium, when the heart beats, the actions of each position of the heart have self uniqueness, and are not in a mode of integrally contracting inwards and expanding outwards at the same time, if a mode of simultaneously controlling a plurality of internal magnets by using the same external magnetic field is adopted, the different action control of each internal magnet is difficult to realize, and further the differential power auxiliary effect according with different actions of each position when the heart beats is difficult to form;

therefore, in the scheme of the application, each magnetic living block 1 is corresponding to at least one external magnetic element 2, so that each magnetic living block 1 can be independently controlled by the external magnetic element 2 as required, the force application amount and the force application direction of each magnetic living block 1 to the heart can be independently controlled as required, the motion control precision of the magnetic living block 1 is greatly improved, and in this way, the differential power assistance effect different from the motion of each part during the beating of the heart can be formed, in particular, more accurate power assistance is provided for different vital sign/heart function data, for example, for some patients or some moments, only the cardiac muscle at the left ventricle is applied with pressure to assist the contraction of the left ventricle to pump blood into the ascending aorta, and for some patients or some moments, only the cardiac muscle at the right ventricle is applied with pressure to assist the contraction of the right ventricle to pump blood into the pulmonary artery, or the left ventricle and the right ventricle are simultaneously assisted to pump blood into the ascending aorta or the pulmonary artery, and the like, so that the different power assistance effects of all parts of the heart are formed, and the magnetic movable blocks 1 of a plurality of parts can also be used for realizing the synergistic action, so that a plurality of power assistance which is consistent with the actual disease condition and the real-time heart function state of the patient are formed.

As a preferable embodiment, in addition to the above, the magnetic loose pieces 1 are in one-to-one correspondence with the external magnetic members 2. Through the one-to-one corresponding mode, the control precision of each magnetic movable block 1 is more accurate.

In a preferred embodiment, the external magnetic member 2 is a halbach array formed by arranging a plurality of magnet units, and the control of the magnetism of the external magnetic member 2 is realized by controlling the relative positions of the respective magnet units 3 as shown in fig. 3. The position of the magnet unit 3 is adjustable, the Halbach magnet array is formed after the 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 changed, and the control of the pressing stroke of the magnetic loose piece 1 in different pressing strength and pressing strength directions is realized through the change, further, the vital sign/heart function data of the patient is related to the position data of each magnet unit 3, the position data of each magnet unit 3 is controlled through the vital sign/heart function data of the patient, and 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 the supporting device, a driving device 5 capable of adjusting the position and/or the magnetic pole direction of the magnet unit 3 is arranged, the driving device 5 is in communication connection with a microcomputer 6 provided with a control program, the vital sign/cardiac function data of the patient enters the microcomputer 6, and after passing through the control program, the adjusting mechanism is driven to make corresponding action, so that the adjustment of the position and/or the magnetic pole direction of the magnet unit 3 is realized; furthermore, compared with the traditional magnet, the Halbach magnet sequence has the advantages that the material can be greatly reduced when the magnetic field with the same strength is formed, the weight of the device worn by a 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 position of the external wearable device is very high, for example, the position shakes up and down, even shifts integrally, and the change of the positions of the external wearable device can affect the internal magnetic loose piece 1, the problem that the internal magnetic loose piece 1 exerts uncontrollable fluctuation on the force applied to the heart, the failure of auxiliary power occurs seriously, and even the treatment accident caused by the wrong force applied to the internal magnetic loose piece 1 occurs.

As a preferable embodiment, in addition to the above manner, further, the external wearable device further comprises 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, such as a clothes shape.

As a preferable embodiment, in addition to the above manner, further, the external wearable device further includes a support 4, and the external magnetic member 2 is disposed on the support 4. Through the setting of support, support external magnetic member 2, ensure the accurate control of external magnetic member 2 position on the one hand, on the other hand, when adopting halbach array, make things convenient for each magnet unit 3 to be able to arrange according to this sequence is reliable.

As a preferred embodiment, in addition to the above manner, further, a driving device 5 is further disposed on the support 4 corresponding to each magnet unit 3, and the driving device 5 is used for driving the magnet unit 3 to move or rotate. The driving device 5 is in communication connection with a microcomputer 6. The microcomputer 6 controls each magnet unit 3 individually according to the acquired vital sign data of the patient through a control program, and in such a way, each magnet unit 3 can be controlled individually, so that the control of the overall magnetic field intensity and direction of the Halbach array is realized.

As a preferred embodiment, on the basis of the above manner, further, a groove 7 for accommodating the magnet unit 3 is provided on the support 4, and the side wall of the groove 7 is slidably engaged 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.

In a preferred embodiment, in addition to the above, the depth of the recess 7 is larger than the height of the magnet unit 3 in the direction toward the heart, so that a moving space is formed between the end of the magnet unit 3 and the end of the recess 7. By forming the movement space, the drive means 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 freedom degree of the magnet unit 3 is further improved, the selectable range of the magnetic field formed by the external magnetic part 2 is further expanded and enriched, on the other hand, the external magnetic part 2 can move towards and away from the heart, so that the force application size of the internal magnetic loose piece 1 is controlled, the power replication form which can be provided by the power system is further increased, and the control accuracy of auxiliary power is further improved.

In a preferred embodiment, in addition to the above, the driving device 5 is further capable of driving 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 a certain or some of the magnet units 3 is deflected, the adjustment of the magnetic field strength and direction of the whole halbach magnet array magnetic field is further realized.

In a preferred embodiment, in addition to the above, the driving device 5 is a linear motor or a rotating motor, such as a micro linear motor or a micro rotating motor, when the linear motor is adopted, the in-vitro magnetic element 2 is wholly pushed by the linear motor to move towards or away from the heart, thereby exerting a force on the magnetic loose piece 1 in the patient, and when one or some of the 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 control of the force application of the magnetic loose piece 1 is realized, 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 the adjustment of the magnetic field intensity and/or direction of the Halbach magnet array is further realized.

In a preferred embodiment, the external magnetic member 2 is an electromagnet, and the magnetism of the external magnetic member 2 is controlled by controlling the magnitude and direction of the current applied to the electromagnet 17. In present technical level, the electro-magnet simple structure to the technology is mature reliable, in the scheme of this application, adopts the electro-magnet as external magnetism spare 2, can reduce system cost of manufacture and later maintenance cost by a wide margin.

As a preferred embodiment, the wearable magnetomotive heart assist power system further comprises a sensor 7 and a microcomputer 6, the sensor 7 is in communication connection with the microcomputer 6, the microcomputer 6 is in electrical connection with the external magnetic member 2, the sensor 7 is used for monitoring vital sign data of a patient, and the vital sign data includes but is 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 collected by the sensor 7, so that the magnetic movable block 1 positioned in the body of the patient generates the required magnetic power. 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 as needed according to the type of the required data, which is a reasonable selection and arrangement that can be performed more practically by those skilled in the art, and will not be described in detail in the present embodiment.

As a preferable embodiment, in addition to the above, the microcomputer 6 further includes a preset program, and the preset program includes: the heart beat cycle related normal parameters are used as reference targets, and through real-time monitoring of vital sign data of a patient, when a related index is abnormal (for example, when heart function data is reduced), a preset program controls the magnetic field of the external magnetic part 2, so that power assistance is provided, the heart function of the patient is improved, the work of the heart is improved, and the blood supply of important visceral organs of the patient in daily activities is met.

As another preferred embodiment, the microcomputer 6 has a preset program therein, and the preset program is: the long-term prognosis of the patient is improved to be used as a reference target, the magnetic field of the external magnetic part 2 is controlled by monitoring the vital sign data of the patient in real time according to the individual treatment opinion of a doctor on the patient, and the internal magnetic loose piece 1 provides a heart pressing mode required by the disease treatment target of the patient. In this way, the patient's heart function and further long-term prognosis can be improved by applying compression to the patient's heart in a manner that is consistent with the physician's expectations, possibly at a higher and/or lower pressure and/or frequency than normal human heart beats.

As another preferred embodiment, the microcomputer 6 has a preset program therein, and the preset program is: the short-term cardiac work of a patient is improved to be used as a reference target, the magnetic field of the external magnetic part 2 is controlled by monitoring vital sign data of the patient in real time according to the individual treatment suggestion of a doctor on the patient, and the internal magnetic loose piece 1 provides a pressing mode which is expected by the doctor for the treatment purpose and is used for the heart of the patient. For some patients with serious structural function damage of the heart and short life expectancy, if power assistance is provided according to the normal heart pulsation data of the human body as the relevant parameters, the pressure degree is too high or the frequency is too high, so that the heart is difficult to bear.

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

As a further preferred embodiment, on the basis of any one of the above-mentioned embodiments, the brain-care device further comprises a standby program-controlled instrument, wherein a control program identical to a preset program in the microcomputer 6 is preset in the standby program-controlled instrument, the standby program-controlled instrument is in communication connection with the sensor 7 and is electrically connected with the external magnetic member 2, and when the mini-brain is in a normal starting state, the standby program-controlled instrument is in a shutdown state; when the microcomputer 6 is stopped, the standby program controller 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 the embodiment, the standby program controller is arranged in parallel with the microcomputer 6 and is used as a standby when the microcomputer 6 is shut down, so that the auxiliary power can be still provided when the microcomputer 6 fails or is monitored and maintained or is updated or parameters are adjusted, and the safety of a patient is ensured.

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

As a further preferred embodiment, the wearable magnetomotive heart assisted power system further comprises a display device, 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 the display device is arranged so that the patient and/or relatives and/or medical care can directly observe the real-time vital sign data of the patient and the relevant index of the device operation.

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

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

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

In a further preferred embodiment, the display device is a wristwatch-type structure provided on the wrist of the patient.

As a preferred embodiment, the sensor 7 is arranged outside the patient's body or in the skin of the body or in the tissue below the skin of the body. Set up sensor 7 in the tissue under the skin of patient external or patient's body surface skin internal back skin, these positions, at first made things convenient for arranging of sensor 7, compare in sensor 7 and arrange at internal mode, reduced sensor 7's the degree of difficulty of putting into by a wide margin, need not introduce the patient internally for sensor 7's work with power 8 in addition, realization that can be convenient supplies power to sensor 7, also can be convenient carry out the maintenance in later stage and work such as better.

As another preferred embodiment, some or all of the sensors 7 are arranged outside the patient's body in the precordial region and/or outside the body in the cardiac region and/or outside the body in the left peripheral subcutaneous tissue of the lower sternum and/or inside the body in the fat tissue outside the pericardium and/or between two pericardium layers of the heart wall. The sensors 7 are arranged at these positions, and firstly, accurate vital sign data of a patient, particularly data of a heart area, can be obtained, so that the precision of the system of the embodiment is greatly improved, and the risk of displacement of the sensors 7 caused by daily activities is avoided as the sensors 7 are arranged in the body.

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

In a further preferred embodiment, the magnetic loose piece 1 is provided with a connecting part 9, and the magnetic loose piece 1 is connected to the outer wall of the heart through the connecting part 9.

In the scheme of the embodiment, the magnetic loose piece 1 is directly sutured on the heart of the area needing to be provided with power assistance, firstly, the position stability of the magnetic loose piece 1 is well ensured, and when the heart contraction strength is insufficient and the pressing power assistance needs to be provided, the external magnetic piece 2 provides like magnetic poles to apply thrust to the magnetic loose piece 1, namely, the pressing power assistance is realized; particularly, when the heart has insufficient diastole, the system of the application is adopted, the external magnetic piece 2 provides the magnetic pole direction opposite to the internal magnetic movable block 1, and applies attraction to the internal magnetic movable block 1, so that the assistance to the diastole is realized, the assistance to the heart beat of the patient is further facilitated, and the rehabilitation training of the heart function of the patient is particularly facilitated.

In a further preferred embodiment, the magnetic loose piece 1 is coated with a biocompatible thin film layer.

The above embodiments are only used for illustrating the utility model and not for limiting the technical solutions described in the utility model, 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 embodiments, and therefore, any modification or equivalent replacement of the present invention is made; all the technical solutions and modifications without departing from the spirit and scope of the present invention are within the scope of the claims of the present invention.

Claims (10)

1. A heart assist compression assembly, comprising: including loose piece support and at least one magnetism loose piece that has magnetism, the loose piece support is used for supporting the magnetism loose piece with be connected with the flexible membrane between the loose piece support, the flexible membrane is used for preventing the magnetism loose piece by drop on the support.

2. A heart assist compression assembly as in claim 1, wherein: the movable block support is provided with a notch, the magnetic movable block is arranged in the notch, and the flexible membrane is connected between the magnetic movable block and the notch.

3. A heart assist compression assembly as in claim 2, wherein: when the inboard edge of magnetism loose piece is along with the inboard edge parallel and level of breach, the flexible membrane is the fold state, the fold volume of flexible membrane does the magnetism loose piece provides the movement stroke towards the heart direction.

4. A heart assist compression assembly as in claim 2, wherein: the flexible membrane has elasticity, works as when the inboard edge of magnetism loose piece is along with the inboard edge parallel and level of breach, the flexible membrane is the natural state of stretching out.

5. A heart assisted compression assembly according to any one of claims 1 to 4 in which: the flexible membrane is arranged on the outer sides of the loose piece bracket and the magnetic loose piece.

6. A heart assist compression assembly as in claim 5, wherein: the magnetic loose piece is provided with an initial position, when the magnetic loose piece is positioned at the initial position, one side of the magnetic loose piece facing to the heart is contacted with the side wall of the heart in a diastole state, and the flexible membrane is in a natural extension state.

7. A heart assist compression assembly as in claim 5, wherein: the magnetic loose piece is connected with the cardiac muscle by means of sewing.

8. A heart assisted compression assembly according to any one of claims 1 to 4 in which: the magnetic loose piece is arranged on the outer side of the flexible membrane.

9. The heart assist compression assembly of claim 8, wherein: the magnetic loose piece 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 far away from the heart.

10. A magnetomotive heart assist power system, characterized by: including a heart assist compression assembly as claimed in any one of claims 1 to 9.

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