Artificial blood vessel and artificial blood vessel system
AssigneeTerumo Kabushiki Kaisha
InventorKazuyoshi TANI
Life of this patent
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Abstract
An artificial blood vessel includes a flexible tube and a structure provided at one end portion of the tube and capable of being deformed to a first outside diameter and a second outside diameter greater than the first outside diameter, wherein the tube is provided with a lock part which is locked at a desired position when the tube is folded back from its other end portion to the inside.
Claims17
An artificial blood vessel configured to replace a portion of a blood vessel in a living body which has been removed from a remaining portion of the blood vessel in the living body, the artificial blood vessel comprising:
- a flexible tube having a portion configured to be fixed to a first part of the remaining portion of the blood vessel in the living body, the flexible tube possessing an inside, one end portion and an oppositely located other end portion,
- a structure fixed to the one end portion of the tube and configured to be positioned inside a second part of the remaining portion of the blood vessel in the living body, the structure being deformable between a first outside diameter and a second outside diameter, with the second outside diameter being greater than the first outside diameter;
- and
- the tube including a lock part fixed to the tube and locked at a desired position when the tube is folded back from the other end portion to the inside of the tube.
An artificial blood vessel system for replacing a portion of a blood vessel in the living body which has been removed from a remaining portion of the blood vessel, the artificial blood vessel system comprising:
- a flexible tube having a portion configured to be fixed to a first part of the remaining portion of the blood vessel in the living body, the flexible tube possessing an inside, one end portion and an oppositely located other end portion,
- a structure fixed to the one end portion of the tube and configured to be positioned inside a second part of the remaining portion of the blood vessel in the living body, the structure being deformable between a first outside diameter and a second outside diameter, with the second outside diameter being greater than the first outside diameter;
- and
- a position fixing device for positioning and holding the tube at a desired position when the tube is folded back from its other end portion to the inside.
A method of joining an artificial blood vessel to a living body blood vessel, the artificial blood vessel comprising a flexible tube, a structure at one end portion of the tube and deformable to a first outside diameter and a second outside diameter greater than the first outside diameter, and a lock part configured to lock the tube at a desired position, the tube possessing an other end portion opposite the one end portion, the method comprising:
- trimming the living body blood vessel and removing at least a portion of the living body blood vessel that is to be replaced with the artificial blood vessel;
- inserting the artificial blood vessel into the living body blood vessel to which the artificial blood vessel is to be joined to position the structure, possessing the first outside diameter, at an indwelling position in the living body blood vessel;
- expanding the structure from the first outside diameter to the second outside diameter while the structure is at the indwelling position;
- engaging a part of a position fixing device with the lock part of the tube to lock the tube;
- folding back the tube from the other end portion to the inside so as to form a folded end portion;
- and
- anastomosing the folded end portion of the tube with a trimmed end portion of the living body blood vessel.
Dependencies are inferred from the claim text.