Patent ID: 8579890
Filing Date: 2013-11-12
Classification: A61B

Abstract:
1. A cryotherapy catheter device, comprising: an elongate catheter body having a longitudinal axis extending between a proximal end and a distal end; an expansion chamber adapted to receive a refrigerant from the distal end of the elongate catheter body; and a refrigerant dispersion member residing within the expansion chamber and configured to redirect the flow of the refrigerant away from a distal end of the expansion chamber and disperse the refrigerant across at least a portion of an interior surface of the expansion chamber, wherein the dispersion member is positioned such that refrigerant exiting the distal end of the elongate catheter body and flowing in a distal direction impacts the dispersion member before reaching the distal end of the expansion chamber, and is redirected by the dispersion member to a region of the expansion chamber away from the distal end.