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US 5,282,478 AGranted
Guidewire extension system with coil connectors
AssigneesBaxter International Inc., Lake Region Manufacturing, Inc.
InventorsJoseph F. Fleischhaker, Jr., Sheryl Higgins, Michael C. Schiffer, Scott Evans
Life of this patent
Estimating the term…
Abstract
An extendable guidewire system including a guidewire and extension wire bearing separate helical coil connectors. The coil connectors, at least in part, have spatially separate adjacent coil turns, thereby providing gaps for receiving coil turns of the other connector.
Claims25
An extendable guidewire system comprising:
- a guidewire section designed for placement into a vascular system having proximal and distal ends, the guidewire section proximal end including a helical coil having a free end and spaced apart adjacent coil turns;
- and
- an extension wire with opposing ends with one of such ends including a helical coil having a free end and spaced apart adjacent coil turns, the coil turns of the guidewire proximal end helical coil or the extension wire helical coil being spacially separated so as to receive the coil turns of the other helical coil when the free ends of the guidewire proximal end helical coil and extension end helical coil are rotated into each other.
A guidewire extension system, comprising:
- a guidewire having proximal and distal ends;
- an extension wire having opposing ends;
- and
- first and second flexible connectors associated with one of the extension wire ends and with the guidewire proximal end and including at least partially interlocking helical coil portions;
- wherein said first and second flexible connectors are helical coils having one or more spatially separated coil turns to form gaps for receiving the coil turns of the other connector.
2 more elements
An extendable guidewire system comprising:
- A guidewire section designed for placement into a vascular system having proximal and distal ends, the guidewire section proximal end including a helical coil having a free end and spaced apart adjacent coil turns, said guidewire section including a cylindrical receiver attached to said guidewire and extending out from said helical coil;
- and
- an extension wire with opposing ends with one of such ends including a helical coil having a free end and spaced apart adjacent coil turns, the coil turns of the guidewire proximal end helical coil or the extension wire helical coil being spatially separated so as to receive the coil turns of the other helical coil when the free ends of the guidewire proximal end helical coil and extension end helical coil are rotated into each other, the extension wire helical coil including therewithin a stem, the stem being attached to the extension wire and projecting from the extension wire helical coil to cooperate with the cylindrical receiver to assist positive engagement of the extension and guidewire coils.
A method for connecting an extension wire section to a guidewire section, comprising the steps of:
- providing a guidewire section having proximal and distal ends, the guidewire section proximal end including a helical coil having a free end and spaced apart coil turns;
- providing an extension wire with opposing ends with one of such ends including a helical coil having a free end and spaced apart adjacent coil turns;
- and
- rotating the free ends of the guidewire proximal end helical coil and the extension end helical coil so that the spatially separated coil turns of the guidewire proximal end helical coil receive the coil turns of the extension end helical coil to effect engagement of the coil turns.
1 more element
Dependencies are inferred from the claim text.