US 12,256,971 B2
Liner for cryogenic treatment systems
Daniel R. Burnett, San Francisco, CA (US); and William Malecki, Piedmont, CA (US)
Assigned to Channel Medsystems, Inc., Berkeley, CA (US)
Filed by Channel Medsystems, Inc., Berkeley, CA (US)
Filed on Feb. 10, 2023, as Appl. No. 18/167,590.
Application 15/868,774 is a division of application No. 14/029,641, filed on Sep. 17, 2013, granted, now 9,895,183, issued on Feb. 20, 2018.
Application 18/167,590 is a continuation of application No. 17/088,865, filed on Nov. 4, 2020, granted, now 11,607,263.
Application 17/088,865 is a continuation of application No. 15/868,774, filed on Jan. 11, 2018, granted, now 10,849,672, issued on Dec. 1, 2020.
Prior Publication US 2023/0181231 A1, Jun. 15, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 18/02 (2006.01); A61B 17/42 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/02 (2013.01) [A61B 2017/4216 (2013.01); A61B 2018/00559 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/0212 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of treating tissue, comprising:
positioning an elongate probe into a uterine cavity to be treated, the elongate probe having a distal tip and a flexible length;
expanding a liner enclosing the probe from a delivery configuration to an expanded configuration, wherein:
in the delivery configuration, the liner is folded and collapsed along pre-formed folds or pleats within a sheath, and
in the expanded configuration, the liner is sized to be larger than the uterine cavity such that portions of the liner fold upon themselves in a controlled manner; and
infusing a cryoablative fluid through a delivery lumen slidingly positioned through or along an infusion lumen, wherein the infusion lumen defines one or more openings along its length and is positioned through or along the elongate probe such that the cryoablative fluid passes through one or more unobstructed openings and into contact with an interior of the liner,
wherein translation of the delivery lumen relative to the infusion lumen controls a number of unobstructed openings along the infusion lumen such that proximal translational of the delivery lumen relative to the infusion lumen from a first location increases the number of unobstructed openings, and distal translation of the delivery lumen relative to the infusion lumen from the first location decreases the number of unobstructed openings.