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Flexible ventricular assist device

A ventricular assist device, flexible technology, applied in the direction of suction equipment, etc., to achieve the effect of reducing postoperative discomfort, light weight, and reducing myocardial damage

Active Publication Date: 2020-11-13
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is to provide a flexible ventricular assist device with a simple structure, which can fit the shape of the heart and adapt to the torsional deformation of the heart in view of the above-mentioned problems existing in the existing cardiac assisting devices.

Method used

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Examples

Experimental program
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Embodiment

[0048] see figure 1 , the flexible ventricular assist device in the illustration is a specific embodiment of the present invention, which includes an elastic shell 11 that fits the outer wall of the heart 9, and multiple groups of pneumatic muscles 100 embedded in the elastic shell 11, wherein At least two groups of pneumatic muscles are respectively set corresponding to the left ventricle and the right ventricle of the heart 9. The pneumatic muscles 100 include an air bag structure, which can expand and contract by changing the pressure inside the air bag, simulating muscle action, and assisting heart contraction through the expansion and contraction of the pneumatic muscles. and diastole, the elastic shell 11 is provided with an airway that connects all the internal airbags of the pneumatic muscle, and the airway of the whole device is drawn out through the air inlet and outlet provided on the elastic shell 11 to connect to an extracorporeal air source.

[0049] Elastic casi...

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Abstract

The invention discloses a flexible ventricle assist device which comprises an elastic shell attached to the outer wall of the heart and at least two sets of pneumatic muscles embedded in the elastic shell and corresponding to the left ventricle and the right ventricle of the heart respectively. An air passage for communicating the air bags in all the pneumatic muscles is arranged in the elastic shell, and is led out through an air inlet and an air outlet in the elastic shell to be connected with an external air source; and a strain limiting layer is arranged on the outer side air bag wall, away from the heart, of the pneumatic muscle. The heart pump blood function of a heart failure patient can be assisted; the whole device is simple in structure, and the elastic shell can be designed to be lighter and thinner; the load of the implantation device on the body of the patient is reduced; the whole elastic structure can better adapt to different biological characteristics adapting to hearts of different patients, is wider in adaptability, can act on the heart to conduct adaptive deformation on torsion of the heart in the heart process, reduces damage to cardiac myocardium of the heart,and enables the heart of the heart failure patient to reach the normal blood pumping level through heart pacing signal feedback control.

Description

technical field [0001] In particular, the present invention relates to a flexible ventricular assist device. Background technique [0002] The non-blood-contact ventricular assist device mechanically squeezes the heart to assist the heart to pump more blood without contact with blood, which can avoid many biocompatibility problems, and its application is better than that of blood pumps and other cardiac assist devices that directly contact blood . However, there are still many shortcomings in the direct heart assist devices studied so far, such as: [0003] The Chinese patent application with the application number CN201210106498.0 discloses a volume-adjustable direct ventricular assist device, which relates to a direct ventricular assist device that adapts to hearts of different sizes. Ventricular auxiliary film, adjustable lining film, heart protection cover, air bag connector, sealing metal block, upper sealing ring, lower sealing ring and other components, the rigid sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/12
Inventor 云忠徐康姜豪
Owner CENT SOUTH UNIV
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