LINER FOR CYROGENIC TREATMENT SYSTEMS

摘要

Liners for cryogenic treatment systems are described where a cryogenic fluid or gas may be introduced into a liner expanded within a body lumen such as the uterine cavity. The liner may be intentionally sized to be substantially larger than the typical size of the uterine cavity, e.g., 1.2 times (or more), greater than the size of the uterine cavity into which the liner is inserted. Because the liner is sized intentionally larger than the body lumen to be treated, the liner may never fully expand when deployed. But even with folds or portions of the liner being folded upon itself, the liner may remain sufficiently supple such that the resulting uncontrolled folds allow for complete conformance of the liner against the anatomy of the contacted tissue.

主权项

1. A tissue treatment system, comprising:
an elongate probe having a distal tip and a flexible length; 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 liner enclosing the probe and being expandable from a delivery configuration to an expanded configuration which is sized to be greater than a body lumen to be treated, wherein the liner defines a suppleness such that expansion of the liner within the body lumen causes portions of the liner to fold upon itself while conforming against a tissue surface of the body lumen.