Microballoon catheter
First Claim
1. A balloon catheter assembly comprising a catheter body having proximal and distal ends;
- a main lumen extending between those proximal and distal ends said main lumen defined by inner and outer tubes which proximally of an inflatable and deflatable balloon;
an inflation tube positioned between the inner and outer tubes and extending between the proximal end of the catheter body and terminating in an inflatable and deflatable balloon; and
said inflatable and deflatable balloon having proximal and distal ends and an inner chamber which balloon is in fluid communication only with the inflation tube, said balloon disposed in the distal region of the catheter body.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
12 Claims
-
1. A balloon catheter assembly comprising a catheter body having proximal and distal ends;
- a main lumen extending between those proximal and distal ends said main lumen defined by inner and outer tubes which proximally of an inflatable and deflatable balloon;
an inflation tube positioned between the inner and outer tubes and extending between the proximal end of the catheter body and terminating in an inflatable and deflatable balloon; and
said inflatable and deflatable balloon having proximal and distal ends and an inner chamber which balloon is in fluid communication only with the inflation tube, said balloon disposed in the distal region of the catheter body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a main lumen extending between those proximal and distal ends said main lumen defined by inner and outer tubes which proximally of an inflatable and deflatable balloon;
Specification
-
- Resources
-
Current AssigneeTarget Therapeutics, Inc. (Boston Scientific Corporation)
-
Original AssigneeTarget Therapeutics, Inc. (Boston Scientific Corporation)
-
InventorsChee, Uriel H., Richling: Bernd, Sepetka, Ivan, Ho, Liem, Pham, Phong
-
Primary Examiner(s)Rosenbaum, C. Fred
-
Assistant Examiner(s)WILKENS, FRANK
-
Application NumberUS08/188,382Time in Patent Office524 DaysField of Search604/96-103, 606/192-195US Class Current604/103.11CPC Class CodesA61M 25/0054 with regions for increasing...A61M 25/1006 Balloons formed between con...A61M 25/1025 Connections between cathete...
