US 12,357,367 B2
Generator for supplying medical instruments
Konstantin Dornhof, Horb am Neckar (DE)
Assigned to ERBE ELEKTROMEDIZIN GMBH, Tuebingen (DE)
Filed by Erbe Elektromedizin GmbH, Tuebingen (DE)
Filed on Dec. 16, 2022, as Appl. No. 18/067,149.
Claims priority of application No. 21217016 (EP), filed on Dec. 22, 2021.
Prior Publication US 2023/0198389 A1, Jun. 22, 2023
Int. Cl. H02M 7/538 (2007.01); A61B 18/12 (2006.01)
CPC A61B 18/1206 (2013.01) [H02M 7/538 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A system for treating a tissue of a patient, the system comprising:
a surgical instrument (10) configured to treat the tissue (11) of the patient with at least one electrode (13) supplied with an electrical current; and
a generator (12) for supply of the surgical instrument (10) with the electrical current comprising:
a first amplifier (V1) that comprises a first input electrode (G1, S4) and a first output electrode (D1);
a second amplifier (V2) that comprises a second input electrode (G2, S5) and a second output electrode (D2);
an inductor (19) that is arranged between the first and the second output electrodes (D1, D2);
a first capacitor (C1) that is connected with the inductor (19) to form an oscillating circuit; and
a second capacitor (C2) that comprises a first end (22) connected with the inductor (19) and a second end (23) connected with a switch (SW1);
a coupling coil (K) inductively connected with the inductor (19) for supplying the electrical current to the surgical instrument (10) via an electrical line (16); and
a control circuit (24) configured to selectively open and close the switch (SW1) for generating a plurality of different wave forms of the electrical current, wherein the plurality of different wave forms of the electrical current have different physiological effects on the tissue of the patient when applied by the at least one electrode (13) of the surgical instrument (10);
wherein the first and second amplifiers (V1, V2) are connected with a push-pull control circuit (18).