| 摘要 |
An artificial valve (5; 10; 20; 30; 50) for implantation in a body, in or adjacent to a blood vessel, comprising a casing (12; 37; 61) and an opening and closing mechanism, at least part of said mechanism being a moving part (11; 21, 22; 31, 32, 33; 51) adapted to make an opening and a closing movement to assume an open and a closed position for opening and closing, of the blood through said blood vessel, and positions between said open and closed positions, said closing movement of the moving part (11; 21, 22; 31, 32, 33; 51) being initiated and carried out when a threshold value is reached by a parameter of the mammal or of a device (8) used by the mammal. The opening and closing mechanism is arranged to cause the moving part (51) to its closing movement by means of giving the moving part kinetic energy in a plurality of steps. |
| 主权项 |
1. An artificial valve for implantation in a mammal body, in or adjacent to a mammal blood vessel, the artificial valve comprising a casing and an opening and closing mechanism, with at least part of said opening and closing mechanism being a first moving part adapted to make an opening and a closing movement relative to the casing, said movements comprising movements to assume an open and a closed position for opening and closing, respectively, of the blood flow through said blood vessel, as well as positions between said open and closed positions, said closing movement of the first moving part being initiated and carried out as the result of a predefined threshold value being reached by a physical parameter of the mammal or a functional parameter of a device used by the mammal, the physical or functional parameter being one or more of the following:
the blood pressure on an inner or an outer side of the valve or the difference in blood pressure between an inner and an outer side of the artificial valve in its closed position, the blood flow at a defined point in the circulatory system of the mammal, a physical parameter which is related to the contraction of a muscle at a defined point in the mammal, a body generated parameter related to the contraction of the mammal's heart muscle, a device generated signal related to the contraction of the mammal's heart muscle, wherein the closing mechanism is adapted to be powered in its movements to the opening and/or closed position in part or entirely by a power source which is external to the blood vessel, wherein the opening, closing or opening and closing becomes an active measure, wherein the at least one first moving part is movably hinged in order to assume the open or closed position as well as positions in between said open and closed positions, the artificial valve further comprises; an inside part, adapted to be; placed inside the mammal blood vessel or heart of the mammal, and introduced in the blood vessel or heart in at least one of the; abdomen, thorax and the inguinal area, to perform the valve moments to assume said open or closed position, and an outer part placed outside the mammal blood vessel or heart, adapted to be placed with at least one of; laparoscopic abdominal surgery and laparoscopic thoracic/thoracoscopic surgery, wherein the closing mechanism comprises one of: a plurality of coils placed on the outer part and adapted to interact with at least one magnet placed on the inside part, wherein the plurality of coils are adapted to be energized stepwise with two or more energy pulses to affect the at least one magnet on the inside part, for operating the valve to perform the valve moments to assume said open or closed position, and a single coil placed on the outer part and adapted to inter act with a plurality of magnets placed on the inside part, wherein the single coil is adapted to be energized stepwise with two or more energy pulses to affect the plurality of magnets on the inside part, for operating the valve to perform the valve moments to assume said open or closed position. |
