US 11,751,931 B2
Cryotherapeutic devices for renal neuromodulation and associated systems and methods
Benjamin J. Clark, Santa Rosa, CA (US); David J. Hobbins, Santa Rosa, CA (US); Tim Huynh, Santa Rosa, CA (US); Grace Kelly, Galway (IE); and Brian Kelly, Galway (IE)
Assigned to Medtronic Ardian Luxembourg S.A.R.L., Luxembourg (LU)
Filed by Medtronic Ardian Luxembourg S.a.r.l., Luxembourg (LU)
Filed on Dec. 30, 2020, as Appl. No. 17/137,796.
Application 17/137,796 is a continuation of application No. 15/586,666, filed on May 4, 2017, granted, now 10,905,490.
Application 15/586,666 is a continuation of application No. 14/397,476, abandoned, previously published as PCT/US2013/028540, filed on Mar. 1, 2013.
Claims priority of provisional application 61/672,159, filed on Jul. 16, 2012.
Claims priority of provisional application 61/646,230, filed on May 11, 2012.
Claims priority of provisional application 61/639,852, filed on Apr. 27, 2012.
Prior Publication US 2021/0259755 A1, Aug. 26, 2021
Int. Cl. A61B 18/02 (2006.01); A61B 90/00 (2016.01); A61B 18/00 (2006.01)
CPC A61B 18/02 (2013.01) [A61B 2018/0022 (2013.01); A61B 2018/00404 (2013.01); A61B 2018/00434 (2013.01); A61B 2018/00511 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00791 (2013.01); A61B 2018/00821 (2013.01); A61B 2018/0212 (2013.01); A61B 2018/0262 (2013.01); A61B 2090/064 (2016.02)] 8 Claims
OG exemplary drawing
 
1. A cryotherapeutic device, comprising:
an elongated shaft having a distal portion, the distal portion having a terminal end, an inflow orifice, and an exhaust orifice, the inflow and exhaust orifices are proximate to the terminal end, and the shaft is configured to be positioned intravascularly at a treatment site;
a cooling assembly at the distal portion of the shaft, the cooling assembly including an applicator having an expansion chamber, the distal portion extends axially through the expansion chamber, and the expansion chamber is in fluid communication with the inflow and exhaust orifices;
a supply lumen configured to transport refrigerant along the shaft to the distal portion, the supply lumen having a distal end connected to the inflow orifice providing a refrigerant path from the supply lumen to the expansion chamber; and
an exhaust passage extending from the exhaust orifice along at least a portion of the shaft, the exhaust passage configured to transport exhausted refrigerant away from the cooling assembly.