Weeping balloon catheter

Details Weeping balloon catheter Weeping balloon catheter

2009-03-25

2011-10-11

Stigell, Theodore (Department: 3767)

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

C604S103010, C604S103020, C604S103050, C604S103060, C604S103070, C604S103080, C604S097010, C604S101010, C604S101020, C604S101030

Reexamination Certificate

active

08034022

ABSTRACT:
Multiple-balloon catheters, and methods of treatment therewith, are provided including an inflatable inner balloon at least partially enclosed by an expandable outer balloon that has holes. The annular space between the inner balloon and the outer balloon is configured to promote delivery of the fluid evenly through holes in the outer balloon to avoid problems of underloading and/or overloading. Preferably, the annular space is in communication with the holes, and the annular space is configured to receive and then to release and distribute the fluid via the holes in a substantially uniform manner such that even amounts of fluid are released in the distal and proximal holes. The inner balloon may have various configurations including being tapered relative to the outer balloon. The outer balloon may also be tapered accordingly. The device may also include raised portions disposed in the annular space and configured to define channels having various configurations.

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