Method for manufacturing medical long body
AssigneeTerumo Kabushiki Kaisha
InventorKouta Hamuro
Life of this patent
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Abstract
A method of manufacturing a medical elongated body including an inner layer, an outer layer covering the outside of the inner layer, and a reinforcement body provided between the inner layer and the outer layer. The method includes an inner layer forming step of forming the inner layer, a reinforcement body forming step of forming the reinforcement body on an outer peripheral surface of the inner layer after the inner layer forming step, a cooling step of cooling at least a predetermined spot of the inner layer after the reinforcement body forming step, and an annealing step of annealing the reinforcement body which overlaps the predetermined spot of the inner layer cooled by the cooling step.
Claims15
A method of manufacturing a medical elongated body including an inner layer, an outer layer covering the outside of the inner layer, and a reinforcement body provided between the inner layer and the outer layer, the method comprising:
- an inner layer forming step of forming the inner layer;
- a reinforcement body forming step of forming the reinforcement body on an outer peripheral surface of the inner layer immediately after the inner layer forming step;
- after forming the reinforcement body on the outer peripheral surface of the inner layer, a cooling step of cooling at least a predetermined spot of the inner layer;
- and
- an annealing step of annealing the reinforcement body which overlaps the predetermined spot of the inner layer cooled by the cooling step;
- wherein in the cooling step, the predetermined spot is cooled by a coolant having a temperature of −10° C. or lower;
- and
- wherein in the cooling step, the predetermined spot is cooled by dipping the predetermined spot in liquid nitrogen before performing the annealing step.
A method of manufacturing a medical elongated body including an inner layer, an outer layer covering the outside of the inner layer, and a reinforcement body provided between the inner layer and the outer layer, the method comprising:
- an inner layer forming step of forming the inner layer;
- a reinforcement body forming step of forming the reinforcement body on an outer peripheral surface of the inner layer immediately after the inner layer forming step;
- after forming the reinforcement body on the outer peripheral surface of the inner layer, a cooling step of cooling at least a predetermined spot of the inner layer;
- an annealing step of annealing the reinforcement body which overlaps the predetermined spot of the inner layer cooled by the cooling step;
- and
- further comprising an outer layer forming step of forming the outer layer such that the reinforcement body on the outer peripheral surface of the inner layer is covered by the outer layer;
- wherein the outer layer forming step is performed before the cooling and annealing steps, and further comprising, an outer layer removing step of removing a portion of the outer layer and thereby defining the predetermined spot of the inner layer.
A method of manufacturing a medical elongated body, the method comprising:
- forming an inner layer;
- forming a reinforcement body on an outer peripheral surface of the inner layer;
- cooling at least a predetermined portion of the inner layer;
- and
- after cooling, annealing at least the reinforcement body which overlaps the predetermined portion of the inner layer;
- wherein in the cooling step, the predetermined portion is cooled by dipping at least the predetermined portion in a coolant before performing the annealing step.
A method of manufacturing a medical elongated body including an inner layer, an outer layer covering the outside of the inner layer, and a reinforcement body provided between the inner layer and the outer layer, the method comprising:
- an inner layer forming step of forming the inner layer;
- a reinforcement body forming step of forming the reinforcement body on an outer peripheral surface of the inner layer immediately after the inner layer forming step;
- after forming the reinforcement body on the outer peripheral surface of the inner layer, a cooling step of cooling at least a predetermined spot of the inner layer;
- and
- an annealing step of annealing the reinforcement body which overlaps the predetermined spot of the inner layer cooled by the cooling step;
- wherein in the cooling step, the predetermined spot is cooled by dipping the predetermined spot in coolant before performing the annealing step.
Dependencies are inferred from the claim text.