CN104548229A - Heart-assisted pulsing beating system based on piezoelectric effect - Google Patents

Abstract

The invention discloses a new-type heart-assisted pulsing system based on a piezoelectric effect. The heart-assisted pulsing system is characterized by comprising an assistant pulsing net and a control module, wherein the assistant pulsing net is made of soft alloy and piezoelectric composite materials; the pulsing net comprises an outer wall alloy net, an inner wall alloy net and a shape regulator; the outer wall alloy net is used for providing support; the inner wall alloy net is completely attached to a heart; the shape regulator is arranged between two walls and is made of piezoelectric ceramic; the control module comprises a heartbeat sensor, an intelligent processing module and a power supply module. The heart-assisted pulsing system based on the piezoelectric effect has the advantages that the heartbeat can be sensed, the pulsing amplitude is regulated, and the normal function of the heart is beneficially recovered.

Description

A kind of heart assistance based on piezoelectric effect is beaten system

Technical field

The present invention relates to medical equipment apparatus field, particularly relate to a kind of heart assistance and to beat system.

Background technology

Heartbeat can make blood circulate, for health each portion conveyed provides required nutrition and carries out the exchange of oxygen.When heart is because of serious symptom and sick wound, partially or completely loss of function and when can not give treatment to by the method for routine, one of method of medical skill now uses allochthonous natural heart to transplant, but this method is because of difficulty of originating for heart person, there are the problems such as immunoreation, repulsion after transplanting, therefore instead of later always desirable solution party.In recent years, the device of using artificial manufacture usually clinically partially or completely substitutes the heart of disease damage, compensates its physiological function.

The more heart assistance of current use beats apparatus for left ventricular assist device, its operation principle provides pulsatile flow power for connecting external air source by pipeline, left atrium or left ventricle blood flow are introduced the auxiliary pump housing, drives blood flow to enter aorta through the pump housing, thus substitute left heart blood-pumping function.But current inserts the homeostasis that mechanical blood pump can affect collective, show as infection, hemorrhage, thromboembolism, organ failure, right heart failure and device damage etc. with the form of complication, the plant failure incidence rate of conventional membrane pump is very high and life cycle is short.On the other hand, blood pump can not be synchronous with heartbeat, thus can not change adapting with the physical stress of endocardial, affect the functional rehabilitation of heart.

Authorization Notice No. is that the utility model patent of CN202569021 proposes a kind of fluid pressure that utilizes to affect the heart assistance blood circulation of heartbeat amplitude, system comprises scalable cystidium, bracing frame, fluid media (medium) and is filled with or extracts out the pump of fluid, its system structure is comparatively complicated, and device is more.

Above-mentioned patent and prior art have following technological deficiency: system is destroyed comparatively large to self heart, and easily cause the complication such as hemorrhage, thrombosis and infection, system structure is complicated, and volume is comparatively large, and power consumption is high, and service time is short.

Summary of the invention

For the problems referred to above of prior art, the invention provides a kind of heart assistance based on piezoelectric effect to beat system, frequency and the amplitude of heartbeat can be experienced, and coordinate heart to finely tune its pulsatile range, few to heart injury, and hemorrhage and thrombosis problem can not be caused.

System comprises the assist pulsation net and control module that are made up of soft alloy and piezo-electricity composite material.

The shape adjuster that described assist pulsation net comprises and is made up of piezo-electricity composite material between the inwall alloy network of fitting completely for the outer wall alloy network that provides support and heart and two walls.

Described alloy network exterior insulation, is only that the part that shape adjuster connects is provided with conductiving point, for powering for shape adjuster.

Described shape adjuster is realized by multiple piezo-electricity composite material, and described composite comprises outer layer metal electrode layer A, and middle piezoceramics layer and inner layer metal electrode layer B, three layers are closely as one.Described " metal electrode layer A " except do electrode use also need as metal negative, need adopt ductility low, have certain thickness sheet metal.Described " metal electrode layer B " only makes electrode and uses, and requires that ductility is fine.Described Novel piezoelectric composite material adopts N-type double-spiral structure.Described Novel piezoelectric composite material " piezoceramics layer " Double helix circle center line connecting needs and dead in line.

After energising, voltage makes " piezoceramics layer " every block disk all occur to extend vertically by metal electrode, " metal electrode layer A " shape invariance simultaneously, therefore the relative B side of piezoelectric ceramics near A side is shunk, make the spiral type expansion vertically of full wafer pottery, change inner wall shape, and then affect the amount of contraction of heart.

Described control module comprises heartbeat induction apparatus, intelligent processing module and supply module.

Described heartbeat induction apparatus is for responding to frequency and the amplitude of heartbeat, described intelligent processing module is for receiving the data of heartbeat induction apparatus, the output voltage of adjustment supply module, thus change the deformation stroke of piezoelectric, final realization is to the adjustment of heartbeat amplitude, described supply module is connected with alloy network, is that piezo-electricity composite material is powered by alloy network.

Benefit of the present invention is: this system can respond to heartthrob, and adjusts pulsatile range, is conducive to heart and recovers normal function.Adopt the miscellaneous function of piezo-electricity composite material realization to heartbeat in system, power consumption is little, and volume is little, lightweight, can use the long period.System is inserted in body completely, and to blood vessel and ventricle without destruction, can not cause the complication such as hemorrhage and thrombosis.

Accompanying drawing explanation

Fig. 1 is the system block diagram in the present embodiment

Fig. 2 is assist pulsation net schematic diagram in the present embodiment

Fig. 3 is side view when not being energized of the piezo-electricity composite material in the embodiment of the present invention

Side view when Fig. 4 is the piezo-electricity composite material energising in the embodiment of the present invention

Detailed description of the invention

Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, provides a kind of novel heart assistance to beat system, below in conjunction with Figure of description, is further elaborated embodiment of the present invention.

As shown in Figure 1, system comprises the assist pulsation net and control module that are made up of soft alloy and piezo-electricity composite material.Described control module comprises heartbeat induction apparatus, intelligent processing module and supply module.

Described assist pulsation net schematic diagram as shown in Figure 2, it wraps heart skin, closely press close to heart, the shape adjuster that described assist pulsation net comprises and is made up of piezo-electricity composite material between the inwall net of fitting completely for the outer wall net that provides support and heart and two walls.

Described inside and outside wall can be made up of the soft alloy conducting electricity, and alloy network exterior insulation is only that the part that shape adjuster connects is provided with conductiving point, for powering for shape adjuster.

Described shape adjuster is realized by multiple piezo-electricity composite material, and described piezo-electricity composite material comprises " metal electrode layer A " for doing electrode and metal negative; For doing " the metal electrode layer B " of electrode; For providing " piezoceramics layer " of piezoelectric effect.

Described " metal electrode layer A " uses also need as metal negative except doing electrode, keeps own form not malleable after powered up, produces deformation difference with " piezoceramics layer ", therefore needs to adopt ductility lower slightly or have certain thickness sheet metal, as latten(-tin) etc." metal electrode layer A " and piezoceramics layer need be combined closely.

Described " metal electrode layer B " only makes electrode and uses, and requires that ductility is fine, the mode of silver layer burning infiltration or vacuum coating can be adopted to realize.

Described " piezoceramics layer " requires when deformation, and deformation stroke is comparatively large, and after deformation, angle change can not occur in position, and highs and lows line is through axle center, and in the axial direction, the center of circle O1, O2 need on axis in deformation direction.

When no power, piezoceramics layer tightens, and side view (Fig. 3) is " N " type in English alphabet, and top view single-screw is mosquito-repellent incense-shaped.

After energising, because " metal electrode layer A " deformation does not occur, therefore the relative B side of piezoelectric ceramics near A side is shunk, make full wafer pottery vertically spiral type along axis elongation, simultaneously, helical structure also can accumulate the miniature deformation of every helical layer disk, and final realization is axially obtaining the object of larger row journey, as shown in Figure 4.

Act on simultaneously can change inner wall shape by multiple shape adjuster, and then affect the amount of contraction of heart.

Described heartbeat induction apparatus is for responding to frequency and the amplitude of heartbeat.This induction apparatus can be cardiac pressure sensor or venous pressure sensor.

Described intelligent processing module is for receiving the data of heartbeat induction apparatus, and the output voltage of adjustment supply module, thus the deformation stroke of change piezoelectric, finally realize the adjustment to heartbeat amplitude.This module can be realized by microprocessor.

Described supply module is connected with alloy network, is that piezo-electricity composite material is powered by alloy network.

It may be noted that description in this description is only for illustration of the object of property, and should not be construed limitation of the present invention, protection scope of the present invention only depends on the protection domain of claims.

Claims (1)

1. the heart assistance based on piezoelectric effect is beaten a system, it is characterized by:

System comprises the assist pulsation net and control module that are made up of soft alloy and piezo-electricity composite material,

The shape adjuster that described net of beating comprises and is made up of piezoelectric ceramics between the inwall alloy network of fitting completely for the outer wall alloy network that provides support and heart and two walls, described alloy network exterior insulation is that the part that shape adjuster connects is provided with conductiving point, for being shape adjuster electric energy transmitting

Described shape adjuster is realized by multiple piezo-electricity composite material, described composite adopts upper and lower two-layer coating metal electrode, centre is the three-layer composite structure of piezoelectric ceramics, this ceramic shape is N-type double-spiral structure, two-layer spiral center position overlaps, and can extend in the axial direction, thus change inner wall shape after energising from shaft core position toward both sides, and then affect the amount of contraction of heart

Described control module comprises heartbeat induction apparatus, intelligent processing module and supply module,

Described heartbeat induction apparatus is for responding to frequency and the amplitude of heartbeat, described intelligent processing module is for receiving the data of heartbeat induction apparatus, the output voltage of adjustment supply module, thus change the deformation stroke of piezoelectric, final realization is to the adjustment of heartbeat amplitude, described supply module is connected with alloy network, is that piezo-electricity composite material is powered by alloy network.