Surgery – Instruments – Internal pressure applicator
Patent
1997-04-28
1998-09-22
Buiz, Michael Powell
Surgery
Instruments
Internal pressure applicator
606194, 604 96, 604164, A61M 2900
Patent
active
058108670
ABSTRACT:
A dilation catheter having a balloon inflation shaft with an inflation lumen into which a stiffening wire extends and a guidewire shaft having a guide wire lumen adjacent to the balloon. The stiffening wire includes at least two stepped diameter reductions along its length to vary stiffness from a stiff proximal end providing improved pushability to a less stiff distal end providing improved trackability. A manifold at the inflation shaft proximal end includes a handle for adjusting the distance the stiffening wire extends into the inflation lumen to allow stiffness to be optimized. The handle includes a tubular flange frictionally engaging the manifold to prevent inadvertent handle movement. The balloon inflation shaft and guidewire shafts are bonded together in a manner producing an assembly having a circular cross section for improved connection to a circular balloon and improved catheter performance.
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Pintor Rafael
Verbeek Maurice T.
Zarbatany David J.
Buiz Michael Powell
Duncan John R.
Medtronic Inc.
Patton Harold R.
Plunkett Dianne M. F.
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