Outside aortic counterpulsation device with extracorporeal respiratory chamber

An outside aortic counterpulsation device with an extracorporeal respiratory chamber, comprising an intracorporeal catheter extending into a descending aorta and a respiratory chamber assembly located outside a body, wherein a first end of the respiratory chamber assembly is connected to an outer end of the intracorporeal catheter, and a second end of the respiratory chamber assembly is connected to a counterpulsation controller;

• a side wall of an inner end of the intracorporeal catheter is provided with a plurality of through holes, and the outer end of the intracorporeal catheter is hermetically connected to an extracorporeal balloon;
• and
• the respiratory chamber assembly comprises a housing, a piston driving mechanism and an elastic respiratory chamber membrane, wherein the piston driving mechanism and the elastic respiratory chamber membrane are arranged inside the housing;
• a closed end of the elastic respiratory chamber membrane is fixedly connected to a piston of the piston driving mechanism, and an open end of the elastic respiratory chamber membrane wraps around the extracorporeal balloon and is hermetically connected to an outer side of a base of the extracorporeal balloon;
• a respiratory chamber is formed between the elastic respiratory chamber membrane and the extracorporeal balloon;
• the piston driving mechanism is configured to drive the elastic respiratory chamber membrane to expand or contract;
• when the elastic respiratory chamber membrane expands, a vacuum is formed inside the respiratory chamber, allowing the extracorporeal balloon to be blown in an opposite direction, wherein blood from the descending aorta is drawn into the extracorporeal balloon;
• and when the elastic respiratory chamber membrane contracts, an internal space of the respiratory chamber is squeezed, allowing the blood in the extracorporeal balloon to be perfused into the body, thereby achieving outside aortic blood counterpulsation.