Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1994-01-26
1995-07-04
Rosenbaum, C. Fred
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
606194, A61M 2900
Patent
active
054296056
ABSTRACT:
This invention is a microballoon tipped catheter. The catheter has a shaft which is of varying flexibility with the most flexible portion towards the distal tip. The balloon, located near the distal tip of the catheter, is typically of an elastic material, is quite flexible in its own right when deflated, and is quite small. The catheter shaft has a main lumen extending from the proximal end to the distal end so to allow the use of a guidewire in placing the catheter's distal tip in remote regions of the vasculature and for delivery of drugs, diagnostics, and other biologics to those regions. The catheter shaft has a wall that desirably is of a multilayer construction. The wall preferably includes an independent lumen, which may be formed from a small diameter tubing that is placed between layers of the wall, for the inflation and deflation of the microballoon. The inflation lumen proceeds from the proximal end of the catheter and terminates near the distal end of the catheter but within the microballoon. This catheter is especially useful in treating disease within the high pressure vessels of the brain with drugs or other therapeutic agents and permits temporary blockage of blood flow and thereby allow better absorption of those active agents.
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Chee Uriel H.
Ho Liem
Pham Phong
Sepetka Ivan
Rosenbaum C. Fred
Target Therapeutics Inc.
Wilkens III Frank
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