US 11,654,306 B2
Ultrasonic surgical instrument with cooling system
Robert B. Stoddard, Steamboat Springs, CO (US); and Eric R. Larson, Boulder, CO (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by COVIDIEN LP, Mansfield, MA (US)
Filed on Nov. 26, 2019, as Appl. No. 16/696,208.
Application 16/696,208 is a continuation of application No. 15/705,653, filed on Sep. 15, 2017, granted, now 10,485,996.
Application 15/705,653 is a continuation of application No. 14/630,138, filed on Feb. 24, 2015, granted, now 9,764,166, issued on Sep. 19, 2017.
Application 14/630,138 is a continuation in part of application No. 14/284,741, filed on May 22, 2014, granted, now 9,622,767, issued on Apr. 18, 2017.
Claims priority of provisional application 61/876,449, filed on Sep. 11, 2013.
Claims priority of provisional application 61/876,457, filed on Sep. 11, 2013.
Prior Publication US 2020/0094081 A1, Mar. 26, 2020
Int. Cl. A61N 7/00 (2006.01); A61B 17/32 (2006.01); A61B 17/00 (2006.01)
CPC A61N 7/00 (2013.01) [A61B 17/32 (2013.01); A61B 17/320092 (2013.01); A61B 2017/00084 (2013.01); A61B 2017/00092 (2013.01); A61B 2017/320072 (2013.01); A61B 2017/320075 (2017.08); A61B 2017/320084 (2013.01); A61B 2017/320094 (2017.08); A61B 2017/320095 (2017.08)] 13 Claims
OG exemplary drawing
 
1. An ultrasonic surgical instrument including a blade cooling system, comprising:
a waveguide configured to receive ultrasonic energy from an ultrasonic transducer and transmit the ultrasonic energy along the waveguide, the waveguide defining a cooling conduit having a closed proximal end and an open distal end defining a conduit opening;
a blade extending distally from the waveguide and configured to receive the ultrasonic energy from the waveguide, the blade defining a blade lumen having a closed distal end and an open proximal end defining a blade outlet,
wherein the blade outlet is disposed in fluid communication with the conduit opening to define a closed heat pipe extending between the closed distal end of the blade lumen and the closed proximal end of the cooling conduit, the closed heat pipe configured to facilitate heat transfer from the blade to the waveguide.