US 12,408,971 B2
Electrosurgical resector tool
George Christian Ullrich, Anglesey (GB); Christopher Paul Hancock, Chepstow (GB); and Louis Turner, Chepstow (GB)
Assigned to CREO MEDICAL LIMITED, Chepstow (GB)
Appl. No. 18/703,683
Filed by CREO MEDICAL LIMITED, Gwent (GB)
PCT Filed Nov. 10, 2022, PCT No. PCT/EP2022/081501
§ 371(c)(1), (2) Date Apr. 22, 2024,
PCT Pub. No. WO2023/104424, PCT Pub. Date Jun. 15, 2023.
Claims priority of application No. 2117879 (GB), filed on Dec. 10, 2021.
Prior Publication US 2024/0325072 A1, Oct. 3, 2024
Int. Cl. A61B 18/14 (2006.01); A61B 18/18 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1445 (2013.01) [A61B 18/1815 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/0063 (2013.01); A61B 2018/146 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An electrosurgical resector tool comprising:
an energy conveying structure for carrying radiofrequency electromagnetic energy and/or microwave electromagnetic energy;
a tool tip mounted at a distal end of the energy conveying structure, wherein the tool tip comprises a first jaw and a second jaw;
wherein the first jaw comprises a first pair of electrodes that are electrically isolated from one another;
wherein the first pair of electrodes is coupled to the energy conveying structure,
wherein the first jaw and the second jaw are movable relative to each other between a closed position in which the first jaw and the second jaw lie alongside each other, and an open position in which the second jaw is spaced from the first jaw by a gap for receiving biological tissue;
wherein the first jaw extends in a distal direction beyond the second jaw in the closed position; and
wherein the first jaw includes a distal end face,
wherein the distal end face is arranged such that, in the closed position, when the electrosurgical resector tool is moved in the distal direction, the distal end face firstly comes in contact with the tissue,
wherein the first jaw includes a first tooth that projects towards the second jaw, the first tooth providing a part of the distal end face such that, in the closed position, when the electrosurgical resector tool is moved in the distal direction, the first tooth firstly comes in contact with the tissue, and wherein the first pair of electrodes is arranged on the first tooth such that the first pair of electrodes is exposed on part of the distal end face that is provided by the first tooth.