CN207614108U - Centrifugal right ventricular assist device - Google Patents

Abstract

The utility model is related to a kind of centrifugal right ventricular assist devices, including centrifugal pump and power transmission member, there is centrifugal pump driving end, power transmission member to be connect with driving end, the rotation of driving end can be driven with the movement of respiratory muscle, to drive centrifugal pump to realize being pumped into and pumping out for blood.The auxiliary device of the utility model can assist the patients such as right ventricle depauperation or right heart insufficiency, realize that blood repeatedly is pumped into and pumps out action, required power is provided for pulmonary circulation, make one internal blood close to proper flow；Moreover, power-assisted right ventricle when using patient respiratory, can save complicated control system, and realize that the convergent force with left ventricle matches, and is easily guaranteed that body pulmonary circulation balances each other, so as to preferably assist right ventricle, and reach longer non-cutting time, be conducive to clinical application and popularization.

Description

Centrifugal right ventricular assist device

Technical field

The utility model is related to the field of medical instrument technology more particularly to a kind of centrifugal right ventricular assist devices.

Background technology

Many complicated congenital heart diseases (Repair of Pulmonary Atresia with Intact Ventricular Septum, serious pulmonary stenosis and Single Cardiac Ventricle etc.) Right heart systematic growth is not perfect or right heart insufficiency, lead to not that row radical operation treatment, operative mortality rate be high or art Infectious-related complication is more, greatly affected the quality of life and survival rate of patient.

The device of existing ventricle auxiliary is not and aims at auxiliary right ventricle and design at present, and often needs external dynamic Power, control system is also extremely complex, is unfavorable for the clinical application and popularization of such device.

Since right ventricle and Left Ventricular Structure and function are entirely different, pulmonary circulation and body circulation pressure are also entirely different, therefore The structure of right ventricle auxiliary pump ought to different left ventricle auxiliary pumps.Further, since the fineness of control system is inadequate, external connection power It cannot often match well with left ventricular contraction power, it is unbalance to easily lead to body pulmonary circulation.Therefore, existing apparatus cannot be well Right ventricle is assisted, and the time assisted safely is shorter.

In short, design it is a aim at auxiliary right ventricle, borrow self power-actuated right ventricle auxiliary pump and be that meet will Carry out the preferential selection of demand.

Utility model content

The purpose of this utility model is to propose a kind of centrifugal right ventricular assist device, can utilize patient's body itself Power-assisted right ventricle.

To achieve the above object, the utility model provides a kind of centrifugal right ventricular assist device, including centrifugal pump and There is driving end, the power transmission member to be connect with the driving end for power transmission member, the centrifugal pump, can be with described The movement of respiratory muscle drives the driving end rotation, to drive the centrifugal pump to realize being pumped into and pumping out for blood.

Further, the power transmission member includes at least two force-applying pieces for being located at the driving end both sides, The respective first end of force-applying piece described in both sides is connect with the driving end respectively, the respective second end rib with human body both sides respectively Bone connects, and the driving end can be driven to rotate when the respiratory muscle drives rib cage movement.

Further, force-applying piece described in both sides does synchronous backward linear motion when the respiratory muscle drives rib cage movement.

Further, the centrifugal pump is equipped with inlet and outlet, and the import is located at one opposite with the driving end Side, the import with right auricle of heart or vena cave for being connected to, and the outlet with pulmonary artery for being connected to.

Further, the driving end of the centrifugal pump is equipped with connecting shaft, and the power transmission member further includes movement conversion Component, the rotary motion for the linear motion of force-applying piece described in both sides to be converted to the connecting shaft.

Further, further include one-way mechanism, the one-way mechanism is located at the movement converting member and the connecting shaft Between, movement converting member force-applying piece described in both sides drives the company when being located remotely from each other relative to the driving end Spindle rotates, to realize being pumped into and pumping out for blood, and when the force-applying piece described in both sides is close to each other relative to the driving end It is stopped.

Further, the centrifugal pump includes shell and the impeller that is located in the shell, and the shell is equipped with outlet, It is described to export the one inlet position for being located at the impeller.

Further, movement converting member force-applying piece described in both sides is located remotely from each other relative to the driving end Or drive the connecting shaft to rotate in the opposite direction when close, so that the centrifugal pump can realize blood under the two states Be pumped into and pump out.

Further, the centrifugal pump includes shell and the impeller that is located in the shell, and the shell is equipped with outlet, It is described export be located at the impeller two inlets converge position.

Further, the movement converting member includes gear and rack, and the gear is located at the outer end of the connecting shaft, The rack is located at the force-applying piece on the partial-length of the gear, and two racks are respectively in the phase of the gear To position at engage.

Further, force-applying piece described in both sides keeps relatively parallel during the motion.

Further, further include package structure, the force-applying piece for protecting both sides.

Further, the centrifugal pump includes impeller, and the impeller is sticky impeller.

Further, the centrifugal pump is for connecting and being relatively fixed the cardiac structure in human body.

Based on the above-mentioned technical proposal, the centrifugal right ventricular assist device of the utility model, by dynamic in the setting of driving end Force transmission member can drive the driving end of centrifugal pump to do one-directional rotation or two-way friendship with the movement of respiratory muscle when human body respiration For rotation, to drive centrifugal pump to realize being pumped into and pumping out for blood.Such auxiliary device can assist right ventricle depauperation or The patient of right heart insufficiency realizes that blood repeatedly is pumped into and pumps out action, provides required power for pulmonary circulation, make one internal Blood is close to proper flow.

Description of the drawings

Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application, The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model It limits.In the accompanying drawings：

Fig. 1 is the elevation structural schematic diagram of one embodiment of the centrifugal right ventricular assist device of the utility model；

Fig. 2 is the positive internal structure schematic diagram of one embodiment of the centrifugal right ventricular assist device of the utility model；

Fig. 3 is the vertical view of one embodiment of the centrifugal right ventricular assist device of the utility model；

Fig. 4 is in two force-applying pieces for one embodiment of the centrifugal right ventricular assist device of the utility model and is located remotely from each other The status diagram that blood is pumped out counterclockwise；

Fig. 5 is that be in two force-applying pieces close to each other for one embodiment of the centrifugal right ventricular assist device of the utility model Make the status diagram that auxiliary device is stopped；

Fig. 6 is movement converting member and irreversible engine in one embodiment of the centrifugal right ventricular assist device of the utility model The structural schematic diagram of structure；

Fig. 7 is that the blood flow both forward and reverse directions in the centrifugal right ventricular assist device of the utility model another embodiment pump out and show It is intended to；

Fig. 8 is that the centrifugal right ventricular assist device of the utility model another embodiment is in two force-applying pieces and is located remotely from each other The status diagram that blood is pumped out counterclockwise；

It is close to each other that Fig. 9 is that the centrifugal right ventricular assist device of the utility model another embodiment is in two force-applying pieces The status diagram that blood is pumped out clockwise.

Reference sign

1, shell；2, import；3, it exports；4, impeller；5, connecting shaft；6, gear；6 ', ratchet；7, force-applying piece；8, pawl.

Specific implementation mode

The utility model described further below.In the following paragraphs, the different aspect of embodiment is defined in more detail. The various aspects so limited can be combined with any other one side or many aspects, can not be combined unless explicitly stated otherwise.Especially It is, it is considered to be preferred or advantageous any feature can be considered as preferred or advantageous spy with other one or more Sign combination.

The terms descriptions merely for convenience such as " first " that occurs in the utility model, " second ", with distinguish have it is identical The different building blocks of title are not offered as priority or primary-slave relation.

In the description of the present invention, it should be understood that term "inner", "outside", "upper", "lower", " left side " and " right side " The orientation or positional relationship of equal instructions is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing this practicality newly Type does not indicate or imply the indicated device and must have a particular orientation, with specific azimuth configuration and operation, therefore not It can be interpreted as the limitation to scope of protection of the utility model.

By using for reference both at home and abroad about the correlative study of heart chamber auxiliary pump, the utility model borrows the self right heart of power drive Room auxiliary device is dedicated to that right ventricle can be assisted for a long time, restores normal biventricular blood flow, to improve such disease prevention and cure Level reduces price and expands the application of right ventricle auxiliary pump clinically.

As shown in Figures 1 to 9, the utility model provides a kind of centrifugal right ventricular assist device, follow-up referred to as " auxiliary Device ", in a schematical embodiment, which includes centrifugal pump and power transmission member, and centrifugal pump is for connecting It connects and is relatively fixed on the heart of human body, be located at lobus dexter thymus gland position, preceding close to chest wall position, centrifugal pump has driving end, One end of power transmission member is connect with driving end, can make the movement with respiratory muscle that driving end be driven to rotate in human body respiration, To drive centrifugal pump to realize being pumped into and pumping out for blood, to provide required power for patient's pulmonary circulation, makes one internal blood and connect Nearly proper flow.

The auxiliary device of the utility model embodiment can assist Right ventricular hypoplasia or right heart insufficiency patient, can Outer power drive is saved, power drive when using patient respiratory centrifuges pump work.It is acted on and human normal right ventricular function class Seemingly, blood is repeatedly pumped into and pumped out in human body respiration, required power is provided for pulmonary circulation, makes one internal blood close to normally Flowing.Moreover, compared with the auxiliary device for using external connection power in the prior art, the auxiliary device of the utility model utilizes patient Power-assisted right ventricle when breathing can save complicated control system, and realize that the convergent force with left ventricle matches, and is easy Ensure that body pulmonary circulation balances each other, so as to preferably assist right ventricle, and reaches longer non-cutting time, be conducive to clinic and answer With and promote.

Centrifugal pump includes shell 1, and internal structure schematic diagram as shown in Figure 2, shell 1 is interior to be equipped with impeller 4, and impeller 4 is along rotation As driving end, driving end can the rotation of impeller 4 when being rotated by external force for one end of shaft axis.Preferably, impeller 4 is viscous Property impeller, blood component is destroyed when rotated smaller, but also the bonding force of blade surface and blood can be increased, in leaf The centrifugal force that bigger is provided when 4 rotation of wheel for blood, to increase the power of centrifugal pump offer.

With reference to figure 1, Fig. 3 and Fig. 7, the shell 1 of centrifugal pump is equipped with import 2 and outlet 3, import 2 along impeller 4 rotation Axis is located on shell 1, and is located at the side far from driving end relative to impeller 4, import 2 be used for the vena cave of human body or Right auricle of heart is connected to.Outlet 3 on shell 1 positioned at impeller 4 it is tangential on, for being connect with the pulmonary artery of human body.

Power transmission member mentioned above include at least two be located at driving end relative to rotation axis both sides Force-applying piece 7,7 respective first end of both sides force-applying piece respectively with driving end connect, respective second end respectively with human body both sides On rib cage, to drive centrifugal pump to realize being pumped into and pumping out for blood.The auxiliary device of such structure has fixed point at three, packet It includes：Being connected and fixed a little on centrifugal pump casing 1 and human heart and both sides force-applying piece 7 is in the epicostal fixation in human body both sides Point can make the connection of auxiliary device and fixed more firm, to improve reliability that auxiliary device works in human body and Service life.

Force-applying piece 7 is connected to it is epicostal the advantage is that easy to connect, it is fixed reliable, and since rib cage is short-term It not will produce apparent deformation inside, thus do not allow to be also easy to produce serious complication.Certainly, if necessary to utilize the auxiliary of the utility model Device is helped to provide power in a short time for heart, can also be connected to force-applying piece 7 can be with other human bodies of breathing myokinesis On position.

Referring to Fig. 4 and Fig. 5, a force-applying piece 7 is respectively set relative to the both sides of rotation axis at driving end.Force-applying piece 7 Can be strip plate or banded structure, extension path may include straight line or curve, as long as can realize from rib cage to drive The structure of the power transfer function of moved end is in the row of scope of protection of the utility model.In terms of materials'use, force-applying piece 7 can gold Structural member made of category or plastics etc..

Preferably, two force-applying pieces 7 can do synchronous backward linear motion when respiratory muscle drives rib cage movement.Generally The import 2 of the shell 1 of centrifugal pump is sewn on vena cave or right auricle of heart by ground, and outlet 3 is sewn on pulmonary artery.Not due to heart It is the point being completely fixed, thus the force-applying piece 7 positioned at driving end both sides does synchronous backward movement and may be implemented to pull or push away relatively Dynamic driving end keeps the installation site of centrifugal pump firm, is conducive to make the both sides of centrifugal pump simultaneously by opposing force Connection between protection pump and heart.

Preferably, two force-applying pieces 7 keep relatively parallel during the motion, and two force-applying pieces 7 can in this way transported Stress during dynamic is more balanced, is unlikely to generate the too big company for involving, being conducive to protect pump and human heart to centrifugal pump It connects.

As shown in Figure 3 and Figure 7, it being equipped with connecting shaft 5 at the driving end of centrifugal pump, one end of connecting shaft 5 is connect with impeller 4, The other end is connect with power transmission member.Further, power transmission member further includes movement converting member, for that will drive end The linear motion of both sides force-applying piece 7 is converted to the rotary motion of connecting shaft 5, to drive impeller 4 to rotate.It can be real according to impeller 4 Two kinds of embodiment is given below in the difference of existing rotation direction.

In one embodiment, as shown in Figures 1 to 6, the auxiliary device of the utility model further includes one-way mechanism, unidirectionally Mechanism is located between movement converting member and connecting shaft 5, and movement converting member can be in both sides force-applying piece 7 relative to driving end phase Mutually far from when drive connecting shaft 5 to rotate so that centrifugal pump realizes that blood being pumped into and pumping out, and both sides force-applying piece 7 relative to Driving end is stopped when close to each other.

The operation principle of the embodiment auxiliary device is given below：

When human body air-breathing, with reference to figure 1, Fig. 2 and Fig. 4, external intercostal muscles, which is shunk, drives both sides rib cage to move out upwards, and two Frame timber drives both sides force-applying piece 7 to be located remotely from each other relative to driving end respectively, by the biography for moving converting member and one-way mechanism Force effect makes (directions the arrow E) rotation counterclockwise of driving end driving impeller 4, blood flow into the shell 1 of centrifugal pump by import 2 It is interior, realize being pumped into for blood.The blood in centrifugal pump casing 1 is thrown toward under the action of impeller 4 rotates and provides centrifugal force simultaneously 4 outer rim of impeller is simultaneously flowed out along arrow C counterclockwise movements, then by outlet 3 along arrow B, realizes pumping out counterclockwise for blood.

As human exhaled breath, with reference to figure 5, external intercostal muscles diastole drives two frame timbers inwardly to move downwards, two frame timbers point Not Dai Dong two force-applying pieces 7 relative to driving end it is close to each other, under the action of one-way mechanism, cannot drive driving end rotation, 4 remains stationary of impeller, makes centrifugal pump be stopped.

As shown in fig. 6, flywheel structure is collectively formed in movement converting member and one-way mechanism.Specifically, converting member is moved Including pitch wheel 6 and rack, one-way mechanism includes the ratchet 6 ' being located on 6 inner ring of gear and is located at outside connecting shaft 5 Pawl 8 on week, pawl 8 cooperate with ratchet 6 '.For example, two pawls 8 can respectively with 6 inner ring relative position of gear Ratchet 6 ' coordinates.Preferably, two pawls 8 coordinate with the ratchet 6 ' of 6 inner ring upper and lower position of gear respectively.

Gear 6 is located at the outer end of connecting shaft 5, that is, is located at the offside of import 2.Rack is located at force-applying piece 7 close to the portion of gear 6 Divide in length, rack can be fixed on force-applying piece 7, or be integrally formed with force-applying piece 7.The length of rack can adjust, with The blood flow for adjusting and pumping out every time is connect, the pulmonary circulation of patient is adapted to.Two racks respectively nibble by the position opposite on 6 periphery of gear It closes.Preferably, on the basis of Fig. 4 and figure shown in fig. 5, two racks are respectively at the upper and lower position of gear 6 and the tooth of outer ring It is meshed.The diameter of gear 6 can select according to demand, and to adjust the rotating speed of impeller 4 indirectly, regulation and control pump out blood volume to adapt to suffer from The pulmonary circulation of person.

It is simple in structure using gear-driven mode, it occupies little space, and the rotation of connecting shaft 5 can be made more stable, to The pumping procedure of blood is set more to mitigate.Alternatively, in another structure type, movement converting member is crank block machine Structure, sliding block is connected with force-applying piece 7 to be moved in a straight line along sliding slot, and crank is connected with connecting shaft 5, dynamic for being drivingly connected shaft rotation.

Fig. 1 and Fig. 2 illustrates the structure of the embodiment, and centrifugal pump includes shell 1 and the impeller 4 that is located in shell 1, shell Body 1 is equipped with outlet 3.In a kind of structure type, it sets shell 1 to volute shell, exports 3 one inlets along impeller 4 Setting, is unidirectionally pumped out with adapting to blood.For example, in Fig. 1, outlet is tangentially-arranged along the right side of impeller 4.

Include gear 6 and rack for movement converting member, one-way mechanism includes the embodiment of ratchet 6 ' and pawl 8, this The operation principle of kind auxiliary device is described in detail below：

When human body air-breathing, with reference to figure 1, Fig. 2, Fig. 4 and Fig. 6, external intercostal muscles, which is shunk, drives both sides rib cage upwards to outward transport Dynamic, two frame timbers drive both sides force-applying piece 7 to be located remotely from each other along arrow D relative to driving end respectively, i.e., the overlapping of two force-applying pieces 7 Section shortens, while two racks are also located remotely from each other, band moving gear 6 (directions arrow E) rotation counterclockwise, by being located in gear 6 The ratchet 6 ' of circle stirs pawl 8, and connecting shaft 5 and impeller 4 is driven to rotate counterclockwise, and blood flows into the shell of centrifugal pump by import 2 In body 1, being pumped into for blood is realized.Meanwhile the blood in centrifugal pump casing 1 impeller 4 rotate provide centrifugal force under the action of, quilt It gets rid of to 4 outer rim of impeller and along arrow C counterclockwise movements, then is flowed out along arrow B by outlet 3, realize the pump counterclockwise of blood Go out.

As human exhaled breath, with reference to figure 5 and Fig. 6, external intercostal muscles diastole drives two frame timbers inwardly to move downwards, two side ribs Bone drives two force-applying pieces 7 close to each other along arrow F relative to driving end respectively, i.e., the overlay segment of two force-applying pieces 7 is elongated, Two racks are also close to each other simultaneously, as shown in fig. 6, with (directions the arrow G) rotation clockwise of moving gear 6, but it is located at gear The ratchet 6 ' of 6 inner rings cannot be drivingly connected axis 5 with pawl 8 and rotate, 4 remains stationary of impeller so that centrifugal pump is stopped.

In another embodiment, as shown in Figure 7 to 9, movement converting member can be in both sides force-applying piece 7 relative to drive Moved end is located remotely from each other or drives connecting shaft 5 to rotate (directions arrow E and G) in the opposite direction when close, so that centrifugal pump is connecting Being pumped into and pumping out for blood can be realized when axis 5 is rotated towards different directions.It is such to realize that the auxiliary device of two-way operation can More sufficient power is provided for pulmonary circulation, makes one internal blood closer to proper flow.

The operation principle of the embodiment auxiliary device is given below：

When human body air-breathing, in conjunction with Fig. 7 and Fig. 8, external intercostal muscles, which is shunk, drives both sides rib cage to move out upwards, two side ribs Bone drives both sides force-applying piece 7 to be located remotely from each other relative to driving end respectively, makes (directions the arrow E) rotation counterclockwise of driving end, blood It is flowed by import 2 in the shell 1 of centrifugal pump, realizes being pumped into for blood.The blood in centrifugal pump casing 1 is revolved in impeller 4 simultaneously Turn under the action of centrifugal force is provided, be thrown toward 4 outer rim of impeller and along hollow arrow C1 counterclockwise movements, then by outlet 3 along arrow Head B outflows, realize pumping out counterclockwise for blood.

As human exhaled breath, in conjunction with Fig. 7 and Fig. 9, external intercostal muscles diastole drives two frame timbers inwardly to move downwards, two side ribs Bone drives two force-applying pieces 7 close to each other relative to driving end respectively, makes (directions the arrow G) rotation clockwise of driving end, blood It is flowed by import 2 in the shell 1 of centrifugal pump, realizes being pumped into for blood.The blood in centrifugal pump casing 1 is revolved in impeller 4 simultaneously Turn under the action of centrifugal force is provided, be thrown toward 4 outer rim of impeller and along filled arrows C2 clockwise movements, then by outlet 3 along arrow Head B outflows, realize pumping out clockwise for blood.

The contour structures of centrifugal pump are as shown in fig. 7, the shell 1 of centrifugal pump is equipped with outlet 3.Preferably, shell 1 is Fig. 7 Shown in class Pear-Shaped shell.Outlet 3 be located at impeller 4 two inlets converge position, i.e., by shell 1 along 4 two inlets of impeller The blood flow pass of setting converges position as outlet 3.Further, the distal end fluidic junction for exporting 3 is expanded, and blood flow is met Dynamics simultaneously adapts to blood and pumps out forward or backwards.

Specifically, movement converting member may include that gear 6 and rack, gear 6 are located at the outer end of connecting shaft 5, that is, be located at into Mouthfuls 2 offside, rack are located at force-applying piece 7 on the partial-length of gear 6, and rack can be fixed on force-applying piece 7, or with apply Power part 7 is integrally formed.The length of rack can adjust, and to adjust the blood flow pumped out every time indirectly, adapt to the pulmonary circulation of patient. Two racks respectively engage by the position opposite with gear 6.Preferably, on the basis of figure shown in Fig. 8 and Fig. 9, two racks point It is not meshed with gear 6 at the upper and lower position of gear 6.The diameter of gear 6 can select according to demand, to adjust impeller indirectly 4 rotating speed, regulation and control pump out blood volume to adapt to the pulmonary circulation of patient.

It is simple in structure using gear-driven mode, it occupies little space, and the rotation of connecting shaft 5 can be made more stable, to The pumping procedure of blood is set more to mitigate.Two racks respectively engage by the position opposite on gear 6, can pass through two teeth It item reversed while moving driving gear 6 and rotates.Lead to when both sides force-applying piece 7 is located remotely from each other relative to driving end with reference to figure 8 Rack drives gear 6 is crossed to rotate counterclockwise along arrow E.With reference to figure 9, when both sides force-applying piece 7 is close to each other relative to driving end, It is rotated clockwise along arrow G by rack drives gear 6, being pumped into and pumping out for blood can be realized under the two states.

Include the structure of gear 5 and rack for movement converting member, the operation principle of such auxiliary device specifically describes It is as follows：

When human body air-breathing, in conjunction with Fig. 7 and Fig. 8, external intercostal muscles, which is shunk, drives both sides rib cage to move out upwards, two side ribs Bone drives two force-applying pieces 7 to be located remotely from each other along arrow D relative to connecting shaft 5 respectively, i.e., the overlay segment of two force-applying pieces 7 shortens, Two racks are also located remotely from each other simultaneously, and with (directions the arrow E) rotation counterclockwise of band moving gear 6, connecting shaft 5 and impeller 4, blood is logical It crosses import 2 to flow into the shell 1 of centrifugal pump, realizes being pumped into for blood.Blood in centrifugal pump casing 1 is rotated in impeller 4 to be provided Under the action of centrifugal force, it is thrown toward 4 outer rim of impeller and is flowed out along arrow B along arrow C1 counterclockwise movements, then by outlet 3, it is real Existing blood pumps out counterclockwise.

As human exhaled breath, in conjunction with Fig. 7 and Fig. 9, external intercostal muscles diastole drives two frame timbers inwardly to move downwards, two side ribs Bone drives two force-applying pieces 7 close to each other along arrow F relative to drive shaft 5 respectively, i.e., the overlapping ends of two force-applying pieces 7 are elongated, Two racks are also close to each other simultaneously, and band moving gear 6 makes 5 instantaneous needle of connecting shaft (directions arrow G) rotate, and blood passes through import 2 It flows into the shell 1 of centrifugal pump, realizes being pumped into for blood.Blood in centrifugal pump casing 1 is rotated in impeller 4 provides centrifugal force Under effect, it is thrown toward 4 outer rim of impeller and is flowed out along arrow B along arrow C2 clockwise movements, then by outlet 3, realize blood It pumps out clockwise.

The auxiliary device of the utility model designs to solve the power of pulmonary circulation, and being aimed at others, which improves left ventricle, moves The pump that power is insufficient and designs is different, can steadily be followed for the lung of right ventricle depauperation or right heart insufficiency patient's body Ring provides required power, finally to realize that self power right ventricle auxiliary lays the foundation, can significantly improve such patient Surgical result and prognosis.

Moreover, the auxiliary device can utilize the breathing of patient itself to provide power, the movement of respiratory muscle can be relied on to realize Self driving, it is not necessary that additional power part is arranged.When the auxiliary device is implanted into human body, can not damage to the full extent The function of original ventricle.In addition, without mechanical valve prosthesis, using sticky vane rotor, the destruction to blood component in the auxiliary device It is smaller.

In terms of manufacturing method, the mode that 3D printing can be used in the auxiliary device of the utility model is made into one the auxiliary of formula Device makes key components and parts, and traditional moulds can also be used and produce the auxiliary device.

In terms of materials'use, the preferable metal of biocompatibility, synthesising biological material or other no immunogenes can be used Property material produce auxiliary device.Chemical materials is easy to get at present and property is stablized, and is preferred for producing centrifugal right heart auxiliary pump.

A kind of centrifugal right ventricular assist device provided by the utility model is described in detail above.Herein It applies specific embodiment to be expounded the principles of the present invention and embodiment, the explanation of above example is It is used to help understand the method and its core concept of the utility model.It should be pointed out that for the ordinary skill people of the art For member, without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, this A little improvement and modification are also fallen into the protection domain of the utility model claims.

Claims (14)

1. a kind of centrifugal right ventricular assist device, which is characterized in that including centrifugal pump and power transmission member, the centrifugal pump With driving end, the power transmission member is connect with the driving end, can drive the driving end with the movement of respiratory muscle Rotation, to drive the centrifugal pump to realize being pumped into and pumping out for blood.

2. centrifugal right ventricular assist device according to claim 1, which is characterized in that the power transmission member includes At least two are located at the force-applying piece (7) of the driving end both sides, force-applying piece (7) respective first end described in both sides respectively with The driving end connection, respective second end are connect with the rib cage of human body both sides respectively, can drive rib cage in the respiratory muscle The driving end is driven to rotate when movement.

3. centrifugal right ventricular assist device according to claim 2, which is characterized in that force-applying piece described in both sides (7) exists The respiratory muscle does synchronous backward linear motion when driving rib cage movement.

4. centrifugal right ventricular assist device according to claim 1, which is characterized in that the centrifugal pump is equipped with import (2) and outlet (3), the import (2) be located at the opposite side in the driving end, the import (2) be used for right auricle of heart or Vena cave is connected to, and the outlet (3) with pulmonary artery for being connected to.

5. centrifugal right ventricular assist device according to claim 2, which is characterized in that the driving end of the centrifugal pump is set It further includes movement converting member to have connecting shaft (5), the power transmission member, is used for the straight line of force-applying piece described in both sides (7) Movement is converted to the rotary motion of the connecting shaft (5).

6. centrifugal right ventricular assist device according to claim 5, which is characterized in that further include one-way mechanism, it is described One-way mechanism is located between the movement converting member and the connecting shaft (5), and the movement converting member can be in both sides institute State driven when force-applying piece (7) is located remotely from each other relative to the driving end connecting shaft (5) rotate, with realize blood be pumped into and It pumps out, and when force-applying piece described in both sides (7) is close to each other relative to the driving end is stopped.

7. centrifugal right ventricular assist device according to claim 6, which is characterized in that the centrifugal pump includes shell (1) and the impeller (4) that is located in the shell (1), the shell are equipped with outlet (3), and the outlet (3) is located at the impeller (4) one inlet position.

8. centrifugal right ventricular assist device according to claim 5, which is characterized in that the movement converting member can The force-applying piece described in both sides (7) is located remotely from each other relative to the driving end or drives the connecting shaft (5) towards phase negative side when close To rotation, so that the centrifugal pump can realize being pumped into and pumping out for blood under the two states.

9. centrifugal right ventricular assist device according to claim 8, which is characterized in that the centrifugal pump includes shell (1) and the impeller (4) that is located in the shell (1), the shell are equipped with outlet (3), and the outlet (3) is located at the impeller (4) two inlets converge position.

10. according to any centrifugal right ventricular assist device of claim 5~9, which is characterized in that the movement conversion Component includes gear (6) and rack, and the gear (6) is located at the outer end of the connecting shaft (5), and the rack is located at the force Part (7) is on the partial-length of the gear (6), and two racks are respectively at the opposite position of the gear (6) Engagement.

11. centrifugal right ventricular assist device according to claim 2 or 3, which is characterized in that force-applying piece described in both sides (7) keep relatively parallel during the motion.

12. centrifugal right ventricular assist device according to claim 2 or 3, which is characterized in that further include package structure, The force-applying piece (7) for protecting both sides.

13. centrifugal right ventricular assist device according to claim 1, which is characterized in that the centrifugal pump includes impeller (4), the impeller (4) is sticky impeller.

14. centrifugal right ventricular assist device according to claim 1, which is characterized in that the centrifugal pump is for connecting And it is relatively fixed on the cardiac structure of human body.