Lockable guidewire

Details Lockable guidewire Lockable guidewire

1994-04-28

1996-03-12

Hirsch, Paul J.

Surgery

Truss

Pad

604 95, A61M 2501

Patent

active

054977827

ABSTRACT:
A system for inserting and exchanging a dilatation catheter (18) using a lockable guidewire (23) and a guide catheter (17). The locking mechanism is engaged when a hypotube (31) is retracted in the locking section (8) and exposes the radially expanding corewire (30) which locks the guidewire (23) in place in the guiding catheter (17). The guiding catheter (17) may have a modified catheter inner surface (13) lined with a means for frictional engagement with the radially expanding corewire (30). In one embodiment the guiding catheter (17) can be lined with a threaded means complementary to radially expanding corewire (30) helical coil for mechanically holding the lockable guidewire (23) in place. Once locked, the guidewire (23) remains fixed in relation to the lesion (20) during the exchange of a dilatation catheter (18).

REFERENCES:
patent: 4430083 (1984-02-01), Ganz et al.
patent: 5002560 (1991-03-01), Machold et al.
patent: 5273052 (1993-12-01), Kraus et al.
patent: 5275173 (1994-01-01), Samson et al.
patent: 5282478 (1994-02-01), Fleischhaker, Jr. et al.
patent: 5339833 (1994-08-01), Berthiaume et al.
patent: 5372144 (1994-12-01), Mortier et al.
patent: 5373856 (1994-12-01), Grenouillet
patent: 5379779 (1995-01-01), Rowland et al.

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