Minimally invasive intrathoracic cardiac compression device

Abstract

A minimally invasive intrathoracic cardiac compression device comprises a device body, an air bag and a gas delivery pipeline, and is characterized in that the device body is in a sword shape conforming to the sternum in the reverse direction and is composed of a body front portion and a body rear portion, the body front portion is gradually narrowed to form a tip end, the inflatable air bag is arranged on the body front portion, the inner space of the air bag is connected with the gas delivery pipeline, and a holding structure facilitating force application is arranged on the rear portion of the body. In use, the body front portion enters a tissue gap between a human sternum and a pericardium, and air enters and exits the air bag through the air delivery pipeline, so that the air bag expands periodically to extrude a ventricle.

Description

technical field [0001] The invention relates to a minimally invasive intrathoracic heart compression device, which belongs to the technical field of medical devices. Background technique [0002] At present, the equipment used clinically for cardiac resuscitation is generally external chest cardiac compression. External force acts on the sternum through the skin, causing the sternum to move downward by 4-5cm to periodically press the heart. Rib fractures are prone to occur during compression, and the sternum deforms and touches the heart. The area of ​​the heart is small, and the effect of squeezing the heart is small: many patients with sternocostal fractures cannot perform chest compressions; and for some patients with cardiac arrest outside the chest or ineffective chest compressions, clinical emergency rescue Intrathoracic cardiac compression is also required, that is, to extend the hand into the chest cavity and feel the heart. When it is determined that it is arrest, w...

AI Technical Summary

Problems solved by technology

[0002] At present, the equipment used clinically for cardiac resuscitation is generally external chest cardiac compression. External force acts on the sternum through the skin, causing the sternum to move downward by 4-5cm to periodically press the heart. Rib fractures are prone to occur during compression, and the sternum deforms and touches the heart. The area of ​​the heart is small, and the effect of squeezing the heart is small: many patients with sternocostal fractures cannot perform chest compressions; and for some patients with cardiac arrest outside the chest or ineffective chest compressions, clinical emergency rescue Intrathoracic cardiac compression is also required, that is, to extend the hand into the chest cavity and feel the heart. When it is determined that it is arrest, weak heartbeat or ventricular fibrillation, extrapericardial cardiac compression is performed first, and then a chest opener is placed to retract the chest cavity. The pericardium is cut longitudinally anteriorly, and intrapericardial cardiac compression is performed; this type of intrathoracic cardiac compression is not only inefficient and cannot last for a long time, but also has a large compression wound, uneven compression pressure, and poor resuscitation effect

[0003] In response to the above defects, some intrathoracic heart compression devices that can simulate human hands pressing the heart have also appeared in the prior art, so as to improve efficiency and safety; the US patent No. US6193680B1 discloses a device for intrathoracic heart compression through the esophagus The device includes a flexible pipeline with sufficient length, an inflatable air bag is provided at the top of the pipeline, and an air pump can be connected to the tail of the pipeline. When working, the air bag at the top of the pipeline is placed between the heart and the vertebrae through the esophagus, and the air bag connected to the tail of the pipeline is used. The air pump periodically inflates and deflates the air bag to achieve the purpose of continuous and stable intrathoracic cardiac compression; however, the method of intrathoracic cardiac compression through the esophagus has relatively large defects. The contraction of the wall itself will also produce a reverse force against the expansion of the balloon, which will significantly disperse the pressure of the balloon when it presses the heart, and reduce the compression efficiency of the balloon. Moreover, there is no clear body surface mark for intrathoracic cardiac compression through the esophagus. If it is not guided by imaging , it is difficult for the airbag to accurately reach the position of the ventricle, and only when the airbag acts vertically on the ventricle can the blood be output effectively, achieving the purpose of chest compression to the greatest extent

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