Patent ID: 9005104
Filing Date: 2015-04-14
Classification: A61B,A61M,A61N

Abstract:
1. A surgical method for implanting a pump device for improving the pump function of the heart of a human patient, by applying an external force on the heart muscle to assist in and help the pump function of the heart, the surgical method comprising the steps of: placing a piston adapted for reciprocating movement, placing an operating device for operating the piston, placing a heart contacting organ onto the heart of the patient, wherein the movement of the piston directly or indirectly is transported to said heart contacting organ to assist the pump function of the heart, when implanted, and wherein the step of placing the operating device comprises: placing a pressurized fluid system comprising: wherein said second chamber is adapted to hold a fluid having a lower pressure, and said piston being adapted to use said first chamber for moving said piston in two directions with high pressure fluid, and said piston being further adapted to use said second chamber for lowering the pressure on one side of said piston, and the movement of the piston being directly or indirectly transported to said heart contacting organ to assist the pump function of the heart, when implanted.