A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/127
A61M 25/01 (2006.01) A61B 17/22 (2006.01)
Patent
CA 2015226
B0410/7089 AZB/dmc 04/21/89 0401b/5b DETACHABLE GUIDEWIRE EXTENSION ABSTRACT OF THE DISCLOSURE 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 guidewire. 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.
C.r. Bard Inc.
Swabey Ogilvy Renault
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