CN211157660U - Refractory heart failure left ventricle function auxiliary device - Google Patents
Refractory heart failure left ventricle function auxiliary device Download PDFInfo
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- CN211157660U CN211157660U CN201920676869.6U CN201920676869U CN211157660U CN 211157660 U CN211157660 U CN 211157660U CN 201920676869 U CN201920676869 U CN 201920676869U CN 211157660 U CN211157660 U CN 211157660U
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Abstract
The utility model discloses a refractory heart failure left ventricle function auxiliary device, a plurality of suction pipes and a sac cavity tunnel are designed in a suction head, an external suction hole is opened on the lower wall and the outer side of the suction head and is inwards led to a conical sac cavity close to the heart end, a check valve is designed at the communication part of the inside of the pipeline and the sac cavity and is communicated with an inner cavity of an air sac through the check valve, the suction pipe is connected with a water drop-shaped suction head in a single channel in a valve crossing way, the far end is communicated with the air sac chamber, the outer wall of the trapezoidal side surface is provided with the check valve, and the check valve is communicated with the inner; the outer side of the bag body is provided with 4 one-way valves, and the upper end of the bag body is conical and is connected with the air cavity tunnel through an air pipe; the branch air pipe passes through the air sac chamber and the inner side of the air sac wall downwards, and is converged upwards to form a main air pipe which is communicated with the outside of the body through an artery, and the lower end of the guide wire is communicated with the water drop type suction head. The beneficial effects of the utility model are that under the condition of left ventricle function loss, continuous operation does, strives for the time for clinical rescue, perhaps heart transplantation.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, a refractory heart failure left ventricle function auxiliary device is related to.
Background
The device can assist the left ventricle to do work, so that the pulmonary congestion is reduced, the left ventricle does not work, the left ventricle does work, the left ventricle is recovered, the symptoms of pulmonary congestion, pulmonary edema, dyspnea, suffocation and the like caused by acute left cardiac insufficiency are relieved, the patient is helped to successfully get through acute myocardial infarction, high risk period caused by acute left cardiac insufficiency and other reasons, the rehabilitation is successfully realized, the heart failure auxiliary device which is clinically started to be applied in various countries at present mainly comprises a TandemHear device 1, a TandemHear device which is used for assisting the transseptal ventricular assist (PTVA) through skin, the PTVA system is a left ventricular auxiliary device L designed as a short-term circulation support system which does not need to be completely used for heart-lung access surgery, the TandemHear pump provides circulation power to pump an artery from the middle artery, the left ventricle is cut off, the left ventricle auxiliary device is used for assisting the left ventricle to operate, the left ventricle blood flow pump is provided for assisting the heart-ventricular puncture system through a Tanarar artery, the blood circulation system 2, the TandemHear pump can provide constant speed control, the blood flow of the left ventricle, the heart failure of the patient, the heart-,A-Med®Systems p L VAD, the pump is external, requires open chest implantation, links the pump tube with the device through skin, can change the pump with different power and heart discharge capacity according to the need without replacing the catheter system, but obviously increases the operation risk of the patient and the infection probability 4, the bodyThe Extracorporeal membrane oxygenator, ECMO, the Extracorporeal membrane lung, delivers venous system blood to the Extracorporeal membrane oxygenator for sufficient oxygenation and then to the arterial system, also known as fullcardia support. It is characterized by good oxygenation, but can not really directly realize the heart 'no-load' work, and the cardiac afterload is increased because a vein-ECMO-artery access is established in the peripheral blood vessel. Is suitable for ACS accompanied with severe hypoxemia. 5. The aortic balloon counterpulsation device (IBAP) is implanted into descending aorta through femoral artery minimally invasive surgery, the inflation and deflation of the electrocardiograph gating control device are realized, the synchronous pulsation with the heart is realized through the inflation and deflation of the air bag, the function of a heart pump is simulated, the blood flow is assisted, and the function of supplying blood to all organs of the whole body is realized.
The devices have the advantages and the disadvantages, and the disadvantages mainly lie in that the left ventricle is completely replaced, or the function of the left ventricle systolic pump is required to be reserved, namely, the left ventricle is completely replaced, physiological blood pumping cannot be realized, or the function of the left ventricle is required to be reserved, only a tiny part of left ventricle can be assisted to work, the function of the left ventricle cannot be replaced to a great extent, most of acute left heart failure, especially acute myocardial infarction caused by coronary anterior descending acute occlusion, is the function loss of the left ventricle pump, so the clinical application indications are limited, and the effect is poor. In addition, the devices 1 and 2 need to be replaced by the heart or the heart part, so the trauma is large, the effect is poor, particularly the long-term effect is poor, and the complications are more. Most of the existing clinically used left ventricle auxiliary devices are of a non-cardiac electric gating type and cannot be synchronous with ventricular contraction, so that the left ventricle auxiliary devices cannot well simulate human hemodynamics and have poor blood perfusion effect on visceral organs. The utility model discloses the device is applied to early, is to the proruption, and the interim cardiac function auxiliary technique that stage nature cardiac insufficiency and applied also loses to late phase cardiac function, and the foreign body heart replacement, or artifical heart replacement transition period replace the left ventricle auxiliary device.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a refractory heart failure left ventricle function auxiliary device, the beneficial effects of the utility model are that device work need not rely on left ventricle function to remain, promptly under the condition that left ventricle function loses, continuous operation does, for clinical rescue, perhaps heart transplantation strives for the time, can effectual reduction because of the decline of left heart function, the death rate that pump function failure leads to.
The utility model adopts the technical proposal that the suction head comprises a spiral suction pipe and a water drop type suction head, a plurality of suction pipes and a sac cavity tunnel are designed inside the suction head, an external suction hole is opened at the lower wall and the outer side of the suction head and is inwards led to a conical sac cavity close to the heart end, a check valve is designed at the communication part of the inside of the pipeline and the sac cavity and is communicated with an inner cavity of an air bag through the check valve, the suction pipe is connected with the water drop type suction head in a single channel in a valve spanning way, the far end is communicated with the air bag chamber, the outer wall of the trapezoidal side surface is provided with the check valve, the valve is outwards; the bag body is a cylindrical structure and is made of shape memory alloy, the bag body is in a contraction state outside the body, the bag body is released after reaching the inside of the body to form a cylinder, the lower end of the bag body is communicated with a ventricle, the outer side of the bag body is provided with 4 one-way valves, the valves are opened outwards, and the upper end of the bag body is conical and is connected with the air cavity tunnel through an air pipe; the branch air pipe passes through the air sac chamber and the inner side of the air sac wall downwards, and is converged upwards to form a main air pipe which is communicated with the outside of the body through an artery, and the lower end of the guide wire is communicated with the water drop type suction head.
Furthermore, the suction pipe is 30-50cm in length across the valve segment and is flat-leaf type.
Further, the balloon is a 360 degree coanda design.
Further, the airbag latch point is lower and upper 1/3.
Drawings
Fig. 1 is a schematic structural diagram of the device of the present invention.
In the figure, 1, guide wire; 2. a drop-shaped suction head; 3. sucking holes; 4. a spiral straw; 5. a one-way valve; 6. a proximal conical capsule cavity; 7. a balloon chamber; 8. a capsule body; 9. a branch air pipe; 10. a trachea ascending section; 11. a tracheal arch segment; 12 descending segment of trachea; 13. an electrocardio-gate air pump; 14. an electrocardio lead wire; 15. the suction tube and the sac cavity tunnel; 16. the air pipe and the air cavity tunnel; 17. a suction tube trans-valve segment; 18. a capsule cavity.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The utility model discloses the device is shown as figure 1, indoor section: the suction head is divided into a spiral suction pipe 4 and a water drop type suction head 2, a plurality of suction pipe and sac cavity tunnels 15 are designed in the suction head, external suction holes 3 are opened at the lower wall and the outer side of the suction head and are led inwards to a conical sac cavity 6 at the proximal end, a one-way valve is designed at the position, communicated with a sac cavity 18, in a pipeline and communicated with an inner cavity of an air bag through the one-way valve 5, and after blood is sucked, the blood is ensured not to flow back in the air bag inflation stage and is discharged into an aorta through the sac cavity one-way valve 5. The length of the suction pipe is 30-50cm across the valve section 17, the suction pipe is designed in a flat-leaf shape, a single channel is arranged in the suction pipe and is connected with the water drop-shaped suction head 2, the far end of the suction pipe is communicated with the air sac chamber 7, the outer wall of the trapezoidal side face is provided with one-way valves 5, the number of the one-way valves is 4, the valves are opened outwards, blood supply of coronary artery is guaranteed, meanwhile, the coronary artery opening is prevented from being damaged by blood ejection, and the one-way valves. The bag body 8 is designed to be 360 degrees and attached to the wall, the air bag retracts in the exhaust stage, the space of the bag cavity 18 is enlarged and is in negative pressure, blood is sucked into the bag cavity 18 from the suction head through the spiral suction pipe and is expanded in a centripetal manner when being inflated, and the blood is discharged to the heart end near the sinus bottom of the aorta and the aortic arch in two directions simultaneously, so that the blood supply of coronary arteries, subclavian arteries, carotid arteries and peripheral arteries is ensured.
The locking point of the air bag is that the lower part is close to the upper 1/3 position, the lower part is preferentially inflated to ensure that the air bag at the lower wall is firstly inflated to ensure that one third of blood perfuses the coronary artery and two thirds of the blood is shunted towards the main artery, so as to prevent more blood perfusing the coronary artery and damaging the opening of the coronary artery.
The bag body 8, which is cylindrical in structure and made of shape memory alloy, is in a contraction state outside the body, is released after reaching the inside of the body to form a cylinder, the lower end of the cylinder is communicated with the ventricle, 4 one-way valves 5 are designed outside the cylinder, the valves are opened outwards, and the upper end of the cylinder is conical and is connected with an air cavity tunnel 16 through an air pipe.
The branch air pipes 9 are 2-4, downwards pass through the air sac chamber and are arranged on the inner side of the air sac wall, upwards converge into a main air pipe, and are communicated with the outside of the body through femoral arteries. The lower end of the guide wire 1 is communicated with the water drop type suction head, the guide wire 1 is firstly sent to the left ventricle, the water drop suction head 2 is guided into the body along the exchange track and is communicated with the outside of the body through the trachea at the external section, and the exchange is convenient. The ascending trachea section 10, the arch trachea section 11 and the descending trachea section 12 are connected with the outside of the body. The air pump 13 is triggered by the ascending branch R wave of electrocardiogram, namely, the ventricular contraction in the ascending period of R wave starts to exhaust, namely, suction, and the ventricular diastole in the ascending period of T wave starts, at the moment, the aortic valve is closed and the air is filled, at the moment, the aortic valve is closed and the blood is discharged into the aorta, the device is a nitrogen driving device, and the nitrogen is continuously cooled outside and then is filled and deflated. The device can also assist coronary intervention treatment during acute myocardial infarction.
The utility model discloses the external air pump drive of device, electrocardio gate is linked with the patient through electrocardio lead line 14, through gasbag in the extratracheal tube connector, aerifys through the gasbag, and the gassing is imitated and synchronous left ventricle contraction process, and the supplementary left ventricle is beaten the blood, alleviates left ventricle preload.
The utility model discloses install the working process: the air bag 1 is deflated at the end of ventricular diastole, the air bag retracts at the moment, the space of the bag cavity is expanded and is in a negative pressure state, and 15-20ml of blood is drawn from the left ventricle, so that the blood volume of the left ventricle is reduced, the pre-contraction load of the left ventricle is reduced, the work of the left ventricle is reduced, the oxygen consumption of cardiac muscle is reduced, and the cardiac function is improved. 2, the air bag is inflated at the end of systole, namely the very early diastole, at the moment, the air bag is expanded, the space of the bag cavity is compressed and is in a positive pressure state, 15-20ml of blood is drawn from the left ventricle, and the blood is discharged to the aorta through the blood discharge holes at the proximal end and the distal end of the device respectively, and the aortic valve can be actively assisted to be closed at the moment, so that the coronary artery and peripheral blood supply is improved.
The utility model discloses the device advantage still lies in alleviating late stage left heart insufficiency, prolongs patient's life-span, improves acute myocardial infarction and leads to acute left heart failure patient prognosis, does not have the refluence in the PCI art, and TIMI blood flow is 0-1 level. Can replace IBAP used clinically at present.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and modifications of the technical entity of the present invention, which are simple to implement, are within the scope of the technical solution of the present invention.
Claims (4)
1. A refractory heart failure left ventricle function assisting device is characterized in that: the suction head is internally provided with a plurality of suction pipes and sac cavity tunnels, external suction holes are opened at the lower wall and the outer side of the suction head and are led inwards to a conical sac cavity close to the center end, a one-way valve is arranged at the communication part of the inside of the pipeline and the sac cavity and is communicated with the inner cavity of the air sac through the one-way valve, the suction pipe is connected with the water-drop-shaped suction head in a single channel in a trans-valve way, the far center end is communicated with the air sac chamber, the outer wall of the trapezoidal side surface is provided with the one-way valve, the valve is opened outwards, and the one-; the bag body is a cylindrical structure and is made of shape memory alloy, the bag body is in a contraction state outside the body, the bag body is released after reaching the inside of the body to form a cylinder, the lower end of the bag body is communicated with a ventricle, the outer side of the bag body is provided with 4 one-way valves, the valves are opened outwards, and the upper end of the bag body is conical and is connected with the air cavity tunnel through an air pipe; the branch air pipe passes through the air sac chamber and the inner side of the air sac wall downwards, and is converged upwards to form a main air pipe which is communicated with the outside of the body through an artery, and the lower end of the guide wire is communicated with the water drop type suction head.
2. The left ventricular function assist device for refractory heart failure of claim 1, wherein: the length of the suction pipe across the valve segment is 30-50cm, and the suction pipe is flat-leaf type.
3. The left ventricular function assist device for refractory heart failure of claim 1, wherein: the bladder is a 360 degree coanda design.
4. The left ventricular function assist device for refractory heart failure of claim 1, wherein: the airbag latch point is the lower upper 1/3 position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920676869.6U CN211157660U (en) | 2019-05-13 | 2019-05-13 | Refractory heart failure left ventricle function auxiliary device |
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| CN201920676869.6U CN211157660U (en) | 2019-05-13 | 2019-05-13 | Refractory heart failure left ventricle function auxiliary device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124133A (en) * | 2019-05-13 | 2019-08-16 | 青岛大学附属医院 | A kind of refractory heart failure left ventricular function auxiliary device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124133A (en) * | 2019-05-13 | 2019-08-16 | 青岛大学附属医院 | A kind of refractory heart failure left ventricular function auxiliary device |
| CN110124133B (en) * | 2019-05-13 | 2024-04-26 | 青岛大学附属医院 | Intractable heart failure left ventricle function auxiliary device |
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