US 10,888,368 B2
Electrosurgical dissector with thermal management
Ronald J. Podhajsky, Boulder, CO (US); and Kristel L. Ambrosius, Cary, NC (US)
Assigned to COVIDIEN LP, Mansfield, MA (US)
Filed by COVIDIEN LP, Mansfield, MA (US)
Filed on Feb. 12, 2019, as Appl. No. 16/273,286.
Application 16/273,286 is a division of application No. 15/679,398, filed on Aug. 17, 2017, granted, now 10,206,732.
Application 15/679,398 is a division of application No. 13/898,601, filed on May 21, 2013, granted, now 9,757,181.
Claims priority of provisional application 61/658,523, filed on Jun. 12, 2012.
Prior Publication US 2019/0167337 A1, Jun. 6, 2019
Int. Cl. A61B 18/14 (2006.01); A61B 18/08 (2006.01); A61B 18/18 (2006.01); A61B 18/00 (2006.01); A61B 18/16 (2006.01)
CPC A61B 18/082 (2013.01) [A61B 18/085 (2013.01); A61B 18/1445 (2013.01); A61B 18/1477 (2013.01); A61B 18/18 (2013.01); A61B 2018/0063 (2013.01); A61B 2018/00095 (2013.01); A61B 2018/00101 (2013.01); A61B 2018/00107 (2013.01); A61B 2018/00148 (2013.01); A61B 2018/00595 (2013.01); A61B 2018/00994 (2013.01); A61B 2018/1427 (2013.01); A61B 2018/1467 (2013.01); A61B 2018/1497 (2013.01); A61B 2018/162 (2013.01); A61B 2018/165 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electrosurgical pencil comprising:
a proximal portion formed of a thermal conductor including:
a first active electrode disposed on the thermal conductor, and
a first return electrode disposed on the thermal conductor; and
a distal portion formed of a thermal insulator including:
a second active electrode, different from the first active electrode, disposed on the thermal insulator, and
a second return electrode, different from the first return electrode, disposed on the thermal insulator,
wherein the thermal conductor is configured to store thermal energy when radiofrequency energy is passing from the first active electrode to the first return electrode and cauterize tissue by releasing the stored thermal energy when radiofrequency energy is not passing from the first active electrode to the first return electrode.