Patent ID: 9439708
Filing Date: 2016-09-13
CPC Classification: A61B

Claim Text:
1. A cryotherapeutic device, comprising: an elongated shaft having a distal portion and a proximal portion; a cryogenic cooling assembly at the distal portion of the shaft; a supply lumen extending along a length of the shaft, the supply lumen being configured to carry refrigerant distally toward the cooling assembly; a pre-cooling assembly operably connected to the supply lumen, the pre-cooling assembly including— a supply conduit defining a portion of the supply lumen extending through the second tubular region, wherein, in operation, the second flow of refrigerant expands within the second tubular region in direct contact with the supply conduit, thereby cooling the first flow of refrigerant while the first flow of refrigerant moves through the portion of the supply lumen extending through the second tubular region.