US 11,653,968 B2
Cryoablation method and system
Rachid Mahrouche, LaSalle (CA); and Dan Wittenberger, Blainville (CA)
Assigned to Medtronic CryoCath LP, Toronto (CA)
Filed by Medtronic CryoCath LP, Toronto (CA)
Filed on Dec. 3, 2020, as Appl. No. 17/110,365.
Application 15/922,510 is a division of application No. 14/329,571, filed on Jul. 11, 2014, granted, now 9,956,024, issued on May 1, 2018.
Application 17/110,365 is a continuation of application No. 15/922,510, filed on Mar. 15, 2018, granted, now 10,888,367.
Prior Publication US 2021/0085381 A1, Mar. 25, 2021
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 2018/00011 (2013.01); A61B 2018/00017 (2013.01); A61B 2018/0022 (2013.01); A61B 2018/00023 (2013.01); A61B 2018/00041 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/0212 (2013.01); A61B 2018/0268 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A system for controllable adjustment of a temperature of a treatment element of a medical device, the system comprising:
a fluid delivery conduit including an upstream portion and a downstream portion;
a bypass fluid flow path having a first end that is in direct communication with the upstream portion and a second end that is in direct communication with the downstream portion;
a liquid refrigerant source in fluid communication with the fluid delivery conduit; and a gaseous refrigerant source in fluid communication with the fluid delivery conduit, the liquid refrigerant source and the gaseous refrigerant source are a common tank, the common tank including a first valve in fluid communication with the liquid refrigerant source and a second valve in fluid communication with the gaseous refrigerant source, manipulation of at least one of the first and second valves is configured to adjust a ratio of gaseous refrigerant to liquid refrigerant.