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US 5,109,867 AGranted
Extendable guidewire assembly
AssigneeTarget Therapeutics, Inc.
InventorRobert H. Twyford, Jr.
Life of this patent
Estimating the term…
Abstract
An extendable guidewire assembly comprising: a guidewire whose proximal end carries a first axial interlocking member; and extension wire whose distal end carries (i) a second axial interlocking member that is adapted to overlap and axially interlock with the first member and (ii) a retractable sleeve that is retracted to permit the interlocking members to be interlocked and extended to enclose the interlocked members to maintain their interlocked relationship.
Claims9
An extendable guidewire assembly for use within a patient's vasculature comprising in combination:
- (a) a guidewire having a distal end that is adapted to be fed into said vasculature and a proximal end that has a first longitudinal interlocking member;
- (b) an extension wire having a proximal end and a distal end that has a second longitudinal interlocking member that is adapted to longitudinally overlap and interlock with the first interlocking member;
- and
- (c) a retractable sleeve carried concentrically about one of either the proximal end of the guidewire or the distal end of the extension wire, the sleeve being longitudinally movable from a retracted position in which it does not enclose an interlocking member to an extended position in which it encloses the overlapped, interlocked members to prevent said members from substantial radial movement relative to each other.
1 more element
Dependencies are inferred from the claim text.