Detachable guidewire extension

Details Detachable guidewire extension Detachable guidewire extension

1991-04-03

1993-03-30

Hindenburg, Max

Surgery

Truss

Pad

128657, A61B 500

Patent

active

051974860

ABSTRACT:
A guidewire system for use in catheter exchanges avoids the need for a separate exchange wire by connecting an extension wire to the proximal end of the guidewire thereby increasing the effective length of the guidewire to permit a catheter exchange. The proximal end of the guidewire is attached to the distal end of the exchange wire by a disconnectable, reattachable connection which avoids deformation of the connected joint. The connection includes a male element in the form of a reduced diameter rod extending axially from the proximal end of the guidewire and a female element attached to the distal end of the extension wire. The female element includes a helical coil receptive to the rod and dimensioned to receive the rod in an interference fit requiring the spring to expand. Separation is effected by imparting a combined twisting and axial separation motion to the guidewire and extension wire.

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