Process for producing a medical guide wire
AssigneeNippon Cable System Inc.
InventorHiroyuki Shiota
Life of this patent
Estimating the term…
Abstract
A process for producing a medical guide wire comprising a step S2, S5 for inserting the core wire and coil into a tubular die having the desired curved form, a step S3, S6 for heat-treating the core wire and coil in the die, a step 7 for removing oxide skin or films from the heat-treated core wire, a step S8 for assembling the obtained coil to the core wire, a step S9 for brazing or soldering an end of the coil to the core wire, a step S10 for grinding or sandering the obtained guide wire, and then a step for washing the guide wire.
Claims13
A process for producing a medical guide wire comprising a core wire having a reduced-diameter portion disposed at a forward end thereof and a coil attached on, wrapped around and in contact with a periphery of the reduced-diameter portion of the core wire, wherein the reduced-diameter portion of the core wire and the coil are heat-treated to shape a desired curved form using a first die for the reduced-diameter portion of the core wire and a second die different from the first die for the coil, and then the shaped coil is attached to the periphery of reduced-diameter portion of the core wire.
A process for producing a medical guide wire comprising a core wire having a reduced-diameter portion disposed at a forward end thereof and a coil attached on, wrapped around and in contact with a periphery of the reduced-diameter portion of the core wire, wherein the reduced-diameter portion of the core wire is inserted into a first tubular die having a desired first curved form and then heat-treated and the coil is inserted into a second tubular die being different from the first tubular die having a desired second curved form and then heat-treated.
A process for producing a medical guide wire comprising a core wire, a coil attached to the periphery of the core wire, and a flat strip plate, wherein the process has following three steps;
- a first step wherein the flat strip plate is inserted into the coil and an end of the plate is fixed to an end of the coil;
- a second step wherein the core wire previously heat-treated to shape a desired curved form is inserted into the coil obtained in the first step;
- and a third step wherein at another end of the coil obtained in the second step, the coil and the flat strip plate are fixed to to each other.
Dependencies are inferred from the claim text.