Intra-aortic balloon catheters

Details Intra-aortic balloon catheters Intra-aortic balloon catheters

1996-06-05

1999-02-02

Stright, Ronald

Surgery

Cardiac augmentation

Aortic balloon pumping

604 96, 604265, 604281, 606194, A61N 1362

Patent

active

058657215

ABSTRACT:
An intra-aortic balloon pump catheter includes an inner lumen formed by a thin walled superelastic metal alloy tube, namely of nitinol, with an inside diameter sufficient for a guidewire and a small outside diameter which allows reduction of the outer lumen and related components by at least one size French while providing gas shuttle capacity between the lumens for conventional intra-aortic balloon pump operation. The outer lumen is a tube formed of co-extruded plastics to enhance the size reduction and capacity goals, with an inner nylon portion for strength and a relatively thin polyurethane outer portion for biocompatability, flexibility and compatibility for bonding to a thin polyurethane balloon. The proximal end sleeve of the balloon is stretched and then stress-relieved by heating with an internal heater on a mounting mandrel to effect a desired small diameter sizing. A radiopaque metal marker ring of nitinol also is provided to improve imaging capabilities while being compatible with the lumen materials.

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