CATHETER AND MANUFACTURING METHOD FOR CATHETER
To prevent cutting-off of each element wire and to enhance bonding strength of two element wires when bonding braided bodies at an intersection part by laser welding in a catheter and a manufacturing method of the catheter.SOLUTION: A catheter includes a cylindrical braided body 16 which has a first...
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Zusammenfassung: | To prevent cutting-off of each element wire and to enhance bonding strength of two element wires when bonding braided bodies at an intersection part by laser welding in a catheter and a manufacturing method of the catheter.SOLUTION: A catheter includes a cylindrical braided body 16 which has a first set of metal element wires 17 inclined in an axial direction L and wound around; and a second set of metal element wires 18 which are inclined in the axial direction, wound around and cross the first set of element wires at a plurality of intersections 19. In at least a part of the intersections of the plurality of intersections, two element wires 17, 18 are welded by a weld part 36 formed in an angle area including one of four angles P1a, P2, P3, P4 when seen from an outer peripheral side. The weld part 36 is formed only in a part in a width direction when seen from the outer peripheral side with respect to the element wires on an inner peripheral side.SELECTED DRAWING: Figure 4
【課題】カテーテル及びカテーテルの製造方法において、レーザ溶接により編組体を交差部で接合する場合に、各素線の切断を防止すると共に、2つの素線の接合強度を高くすることである。【解決手段】カテーテルは、軸方向Lに対し傾斜して巻回される金属製の第1組の素線17と、軸方向に対し傾斜して巻回され、第1組の素線と複数の交差部19で交差する金属製の第2組の素線18とを有する筒状の編組体16を含む。複数の交差部の少なくとも一部の交差部において、外周側から見た場合の4つの角P1a、P2,P3、P4のうち、1つの角を含む角領域に形成された溶接部36によって、2つの素線17,18が溶接される。溶接部36は、内周側の素線について、外周側から見た場合の幅方向一部のみに形成される。【選択図】図4 |
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