To provide a method for attaching a ring electrode to the shaft in the tip section of a catheter at low cost, which is more effective and has no defect and fault of conventional methods.
An electrode lead wire 16 is passed through a lumen in a catheter and extended out of an exit hole 14 in the tip section. A portion of the electrode lead wire 16 extending out of the exit hole 14 is stripped of non-conductive coating and wrapped around the tip shaft 10 and secured in a clove hitch arrangement. The wrapped electrode lead wire 16 is pulled tightly while the material of the tip shaft is heated to embed the electrode lead wire 16 in the tip section shaft 10. The exit hole 14 is sealed and a ring electrode with a flared skirt is slipped over the shaft to a position over the wrapped electrode lead wire 16 and exit hole 14. It is then swaged to reduce its outer diameter to about that of the tip section shaft 10 to thereby create a low ohmic connection with the electrode lead wire 16.
SOLIS MARIO
| JP2001511407A | 2001-08-14 | |||
| JPH09140803A | 1997-06-03 | |||
| JPH08507942A | 1996-08-27 |
| US4592372A | 1986-06-03 |
Konobu Kato
Hideaki Tazawa
Hamada Hatsune