Helical guidewire

Details Helical guidewire Helical guidewire

1992-07-24

1994-05-24

Yasko, John D.

Surgery

Truss

Pad

604170, 606194, A61M 2500

Patent

active

053139674

ABSTRACT:
A torque-transmitting structure such as a guidewire or catheter is formed of a generally flat band or wire twisted so that its longitudinal edge generally forms a helix. This twisted helical portion may be attached to a proximal shaft, and a tip member may be attached to the distal end of the helical portion. In some embodiments, the device is made of a single piece of wire, and in some embodiments, a spring coil may cover the helical portion. Where the device is a fixed wire balloon catheter, the helical portion may be attached to a proximal shaft, and the balloon mounted on the helical twisted wire, a plastic sheath encasing the main shaft and wire up to the balloon for inflation of the balloon. The helical guidewire may also be used in an over-the-wire balloon catheter.

REFERENCES:
patent: 3732858 (1973-05-01), Banko
patent: 3789841 (1974-02-01), Antoshkiw
patent: 4228802 (1980-10-01), Trott
patent: 4345602 (1982-08-01), Yoshimura et al.
patent: 4474174 (1984-10-01), Petruzzi
patent: 4538622 (1985-09-01), Samson et al.
patent: 4545390 (1985-10-01), Leary
patent: 4554929 (1985-11-01), Samson et al.
patent: 4719924 (1988-01-01), Crittenden et al.
patent: 4721117 (1988-01-01), Mar et al.
patent: 4763647 (1988-08-01), Gambale
patent: 4811743 (1989-03-01), Stevens
patent: 4827941 (1989-05-01), Taylor et al.
patent: 5007434 (1991-04-01), Doyle et al.

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