US 11,751,942 B2
Surgical device
Roger D. Greeley, Portsmouth, NH (US); Brian M. Conley, South Berwick, ME (US); David J. Flanagan, Somersworth, NH (US); Aaron J. Gifford, Lake Elsinore, CA (US); Steven G. Miller, West Newbury, MA (US); Blaine T. Murakami, Corona del mar, CA (US); and Thomas P. Robinson, Addison, TX (US)
Assigned to Medtronic Advanced Energy LLC, Minneapolis, MN (US)
Filed by Medtronic Advanced Energy LLC, Minneapolis, MN (US)
Filed on Apr. 17, 2015, as Appl. No. 14/689,794.
Application 14/689,794 is a continuation of application No. 12/877,400, filed on Sep. 8, 2010, granted, now 9,345,541.
Claims priority of provisional application 61/240,562, filed on Sep. 8, 2009.
Prior Publication US 2015/0238256 A1, Aug. 27, 2015
Int. Cl. A61B 18/18 (2006.01); A61B 18/14 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/18 (2013.01) [A61B 18/14 (2013.01); A61B 2018/0063 (2013.01); A61B 2018/00178 (2013.01); A61B 2018/00589 (2013.01); A61B 2018/00601 (2013.01); A61B 2218/002 (2013.01)] 44 Claims
OG exemplary drawing
 
1. A tissue treatment assembly configured to engage and disengage with an electrosurgical unit having a source of radio-frequency energy, the tissue treatment assembly, comprising:
a shaft including an elongated conductor having a proximal end portion and a distal end portion, the distal end portion including an electrode, wherein at least a section of the elongated conductor is a hollow shaft;
a handle operably coupled to the shaft to enable a user of the tissue treatment assembly to hold and manipulate the tissue treatment assembly by hand;
a cartridge member formed from an electrically insulating material and associated with the proximal end portion of the shaft and the handle, the cartridge member including:
an identifier circuit including a printed circuit board having a circuit element configured to afford communication of a signal from the tissue treatment assembly to the electrosurgical unit, wherein the signal is configured to identify a parameter of the tissue treatment assembly, an identifier number of the tissue treatment assembly, and an operating relationship between fluid flow settings and power delivery settings over a range of power delivery settings as tissue treatment information, the tissue treatment information stored on the identifier circuit, the signal may be received by the electrosurgical unit as a stream of data to the electrosurgical unit, wherein the tissue treatment information in the signal automatically configures the electrosurgical unit in a default power delivery and default fluid flow setting provided to the tissue treatment assembly; and
a portion of a control circuit couplable to the elongated conductive portion, the control circuit having an electrical input configured to receive radio-frequency energy based on the parameter from the source of radio-frequency energy and configured to provide the radio-frequency energy to the elongated conductive portion; and
a switch disposed between the electrical input and the electrode, the switch transitionable between an open position and a closed position, wherein the closed position enables radiofrequency energy to reach the electrode, and wherein the open position prevents radio-frequency energy from reaching the electrode.