CRYOGENIC TREATMENT SYSTEMS

摘要

Methods and apparatus for the treatment of a body cavity or lumen are described where a heated fluid and/or gas may be introduced through a catheter and into treatment area within the body contained between one or more inflatable/expandable members. The catheter may also have optional pressure and temperature sensing elements which may allow for control of the pressure and temperature within the treatment zone and also prevent the pressure from exceeding a pressure of the inflatable/expandable members to thereby contain the treatment area between these inflatable/expandable members. Optionally, a chilled, room temperature, or warmed fluid such as water may then be used to rapidly terminate the treatment session.

主权项

1. A tissue treatment system for treating a tissue surface, comprising:
an elongate probe having a working end and a distal tip; an expandable liner enclosing the working end probe and adapted to be conformable to the tissue surface when expanded; at least one infusion lumen positioned through or along the elongate probe, wherein the infusion lumen defines one or more openings along its length; and a controller configured to: deliver a non-ablative fluid into an interior of the liner to expand the liner to conform to the tissue surface without deforming the tissue surface; monitor a condition of the liner; and deliver an ablative fluid into the interior of the liner via the infusion lumen.