US 12,108,978 B2
Rotating electrical connector for RF energy enabled tissue debridement device
John R. Prisco, Jacksonville, FL (US); Eric P. Detmers, Jacksonville, FL (US); Wenjeng Li, Saint Johns, FL (US); David J. Little, Ponte Vedra Beach, FL (US); Patrick Richart, Jacksonville, FL (US); and Jose Valdez, Jacksonville, FL (US)
Assigned to Medtronic Xomed, Inc., Jacksonville, FL (US)
Filed by Medtronic Xomed, Inc., Jacksonville, FL (US)
Filed on Jun. 28, 2019, as Appl. No. 16/456,948.
Application 16/456,948 is a continuation of application No. 15/046,853, filed on Feb. 18, 2016, granted, now 10,376,302.
Claims priority of provisional application 62/117,513, filed on Feb. 18, 2015.
Prior Publication US 2019/0314080 A1, Oct. 17, 2019
Int. Cl. A61B 18/14 (2006.01); A61B 17/32 (2006.01); A61B 18/12 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/148 (2013.01) [A61B 17/32002 (2013.01); A61B 18/1206 (2013.01); A61B 18/14 (2013.01); A61B 2018/00178 (2013.01); A61B 2018/00208 (2013.01); A61B 2018/00321 (2013.01); A61B 2018/00565 (2013.01); A61B 2018/00589 (2013.01); A61B 2018/00595 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/0063 (2013.01); A61B 2018/00916 (2013.01); A61B 2018/126 (2013.01); A61B 2018/142 (2013.01); A61B 2018/1452 (2013.01); A61B 2218/002 (2013.01); A61B 2218/007 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A bipolar electrosurgical device comprising:
an inner shaft forming a cutting tip;
an outer shaft defining a lumen and a cutting window;
wherein the inner shaft is rotatably disposed about a rotational axis A defined within the lumen such that the cutting tip is selectively exposed through the cutting window;
first and second electrodes associated with the outer shaft such that the first and second electrodes rotate with rotation of the outer shaft relative to the inner shaft;
wherein the first electrode is electrically isolated from the second electrode and is electrically connected to a proximal contact surface;
a rotary electrical connection assembly maintained by a hub member, the rotary electrical connection assembly including an outer stationary connector and an inner rotating connector at least partially nested within a pair of opposing, arcuate arms of the outer stationary connector, the outer stationary connector held stationary upon rotation of the hub member about the rotational axis A and the inner rotating connector configured to rotate in connection with the hub member about the rotational axis A, the inner rotating connector in electrical contact with the proximal contact surface, the rotary electrical connection assembly including an extension electrically coupled to the outer stationary connector between the pair of opposing, arcuate arms, wherein both the outer stationary connector and the inner rotating connector are electrically conductive, partial ring-like structures extending at least 180 degrees about the rotational axis A;
wiring electrically connected to and extending from the extension for delivering electrical power to the outer stationary connector which is conducted to the inner rotating connector along the pair of opposing, arcuate arms to common, nested surfaces of the partial ring-like structure of the inner rotating connector; and
an actuator linked to the proximal contact surface,
wherein the bipolar electrosurgical device is configured such that the outer shaft rotates relative to the inner shaft and the wiring in response to operation of the actuator while the proximal contact surface remains electrically connected to the inner rotating connector.