US 12,239,354 B2
Cryosurgical probe with enhanced thermal performance
Daniel N. Grimm, Round Rock, TX (US)
Assigned to Varian Medical Systems, Inc., Palo Alto, CA (US)
Filed by Varian Medical Systems, Inc., Palo Alto, CA (US)
Filed on Aug. 9, 2023, as Appl. No. 18/446,647.
Application 18/446,647 is a continuation of application No. 16/919,995, filed on Jul. 2, 2020, granted, now 11,723,707.
Prior Publication US 2024/0016532 A1, Jan. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 18/02 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/02 (2013.01) [A61B 2018/00035 (2013.01); A61B 2018/0262 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A probe, comprising:
a first member forming an outer surface of a cryoprobe;
a second member extending longitudinally within the first member; and
a third member disposed radially outward from the second member and extending along at least a portion of the second member, wherein the third member comprises a substantially continuous cross-sectional profile along its length and is configured to operably engage an inner surface of the first member to define at least one passage between the third member and the first member;
wherein the probe defines a fluid flow path for flow in a first direction through the second member and flow in a second direction opposite to the first direction through the at least one passage.