US 12,029,471 B2
HF-surgical preparation instrument with fluid channel
Klaus Fischer, Nagold (DE); Markus Enderle, Tuebingen (DE); Achim Brodbeck, Metzingen (DE); Alexander Neagos, Reutlingen (DE); and Andreas Fech, Tuebingen (DE)
Assigned to ERBE ELEKTROMEDIZIN GMBH, Tuebingen (DE)
Filed by Erbe Elektromedizin GmbH, Tuebingen (DE)
Filed on Sep. 20, 2019, as Appl. No. 16/577,085.
Claims priority of application No. 18196945 (EP), filed on Sep. 26, 2018.
Prior Publication US 2020/0093537 A1, Mar. 26, 2020
Int. Cl. A61B 18/14 (2006.01); A61B 17/3203 (2006.01)
CPC A61B 18/1442 (2013.01) [A61B 17/3203 (2013.01); A61B 18/1482 (2013.01); A61B 2017/32035 (2013.01); A61B 2018/1422 (2013.01); A61B 2018/1452 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A high frequency (HF) surgical preparation instrument (10) for acting on tissue, the instrument comprising:
an electrode (13) having a body with a flat configuration including opposing flat surfaces and an outer edge surface extending therebetween;
an insulating body in contact with and extending over the opposing flat surfaces, wherein an entirety of the electrode body is covered by the insulating body except for at an uninsulated portion of the electrode body that protrudes from the insulating body;
a channel (35) disposed within the insulating body (16) for dispensing a fluid, a gas or an aerosol, wherein the channel (35) is adapted to be connected to a fluid, gas and/or aerosol source;
wherein the channel comprises a nozzle for dispensing the fluid, gas or aerosol onto or into the tissue;
wherein the channel and nozzle are separate and spaced apart from the electrode such that the fluid, gas or aerosol supplied by the fluid, gas and/or aerosol source does not come into contact with the electrode prior to being dispensed from the nozzle;
wherein the uninsulated portion of the electrode body comprises at least a portion of the outer edge surface;
wherein an outlet of the nozzle is set back proximally from an endmost distal extent of the electrode body; and
wherein the nozzle is configured to dispense the fluid, gas or aerosol from the outlet such that the fluid, gas or aerosol does not contact the uninsulated portion of the electrode body as it passes thereby.