US 11,950,843 B2
Electrosurgical apparatus
Christopher Paul Hancock, Bath (GB); George Christian Ullrich, Bangor Gwynedd (GB); David Edward Webb, Gwynedd (GB); Louis Turner, Chepstow (GB); Simon Meadowcroft, Chepstow (GB); Jessi Johnson, Sunnyvale, CA (US); and Miriam Taimisto, San Jose, CA (US)
Assigned to CREO MEDICAL LIMITED, Chepstow (GB)
Appl. No. 16/643,482
Filed by Creo Medical Limited, Chepstow Monmouthshire (GB)
PCT Filed Oct. 12, 2018, PCT No. PCT/EP2018/077879
§ 371(c)(1), (2) Date Feb. 28, 2020,
PCT Pub. No. WO2019/073036, PCT Pub. Date Apr. 18, 2019.
Claims priority of application No. 1716778 (GB), filed on Oct. 13, 2017.
Prior Publication US 2020/0253664 A1, Aug. 13, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 18/00 (2006.01); A61B 18/18 (2006.01)
CPC A61B 18/1815 (2013.01) [A61B 2018/00202 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/00607 (2013.01); A61B 2018/0063 (2013.01); A61B 2018/00946 (2013.01); A61B 2018/00952 (2013.01); A61B 2018/1823 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An electrosurgical forceps instrument comprising:
a flexible shaft defining a lumen;
a coaxial cable for conveying microwave energy disposed within the lumen of the flexible shaft;
a rigid bracket mounted at a distal end of the flexible shaft;
a pair of jaws pivotably mounted on the rigid bracket, the pair of jaws being movable relative to each other to open and close a gap between opposing inner surfaces thereof; and
an actuating element disposed within the lumen of the flexible shaft and extending therefrom through the rigid bracket to operably engage the pair of jaws,
wherein the pair of jaws comprises a first jaw having an energy delivery structure attached to an inner surface therefore, the energy delivery structure comprising a flexible dielectric substrate having a first electrode and an second electrode formed thereon,
wherein the energy delivery structure is connected to receive the microwave energy from the coaxial cable,
wherein the first electrode and the second electrode are arranged to emit the microwave energy received by the energy delivery structure into the gap between the pair of jaws; and
wherein the flexible dielectric substrate comprises a proximal portion that passes through the rigid bracket and extends between a distal end of the coaxial cable and a proximal end of the inner surface, wherein the proximal portion is deformable upon opening and closing of the pair of jaws.