Jeffrey Lee Eggleston
Engineers at 14 Ct, Westminster, CO

5720744, Feb 24, 1998

Jun 6, 1995

8/470533

Jeffrey L. Eggleston - Broomfield CO
James H. Orszulak - Nederland CO
Matthew J. Sodnicar - Lafayette CO

Valleylab Inc - Boulder CO

A61B 1739

606 40

A control system and method for the operation of neurosurgical bipolar electrodes for application to the tissue and bodily fluids of a patient provides a source of high frequency energy connected to bipolar electrodes. Contacting surfaces are on the bipolar electrodes of highly electrically conductive material with resistance per unit area substantially less than the impedance of the tissue and bodily fluids. A current transducer attached to the source of high frequency energy responds to the RMS current applied through the tissue and bodily fluids between the contact surfaces as a measure relative to the instantaneous values of the RMS current. A current transducer attached to the source of high frequency energy responds to the RMS current through a capacitor applied across the contact surfaces to provide a signal correlated to the instantaneous values of the RMS voltage between the contacts and across the tissue and bodily fluids. A control connects to the source of high frequency energy for initially regulating the RMS current applied through the tissue and bodily fluids by the contacting surfaces in response to the impedance until the signal divided by the measure reaches a predetermined value. The control regulates the RMS power applied to the tissue and bodily fluids by the contacting surfaces in accord with the impedance until the signal divided by the measure reaches a predefined value.

6565559, May 20, 2003

May 14, 2001

09/854981

Jeffrey L. Eggleston - Broomfield CO

Sherwood Services AG - Schaffhausen

A61B 1818

606 35, 128898

The present disclosure provides a method for determining the probability of a patient burn under a return electrode in a monopolar electrosurgical system comprising calculating a heating factor adjacent the return electrode utilizing a first algorithm, calculating a cooling factor adjacent the return electrode utilizing a second algorithm, subtracting the calculated cooling factor from the calculated heating factor to obtain a difference value, comparing the difference value to a threshold value, and adjusting the power dependent on the relationship of the difference value to the threshold value.

2007004, Mar 1, 2007

Sep 1, 2005

11/218110

Jeffrey Eggleston - Broomfield CO, US

A61B 18/16

606032000

An electrosurgical return electrode for use in monopolar surgery is disclosed. The return electrode includes a conductive pad which includes a plurality of conductive elements, forming a grid. A plurality of temperature sensors are each operatively engaged with a respective one of the plurality of conductive elements. A connection device is capable of selectively transferring radio frequency current from an active electrode to each of the plurality of conductive elements. The connection device may be connected and/or disconnected to a conductive element when a temperature sensor senses a predetermined temperature or range of temperatures. Specifically, if the temperature of a portion of the patient is too high, the corresponding conductive element may be disconnected from the connection device. If the temperature of a portion of the patient is low enough, the corresponding conductive element can be connected (or reconnected) to the connection device.

5575789, Nov 19, 1996

Oct 27, 1994

8/330278

Gregory J. Bell - Broomfield CO
Jeffrey L. Eggleston - Broomfield CO
Kamala J. Grasso - Boulder CO
Jenifer S. Kennedy - Boulder CO
Dale Schmaltz - Boulder CO
Kenneth D. Taylor - Broomfield CO

Valleylab Inc. - Boulder CO

A61B 1736

606 42

A surgical safety apparatus for use in connection with an energizable surgical device prevents inadvertent activation of a surgical tool. The energizable surgical device may include an electrosurgical system, a laser scalpel, an ultrasonic aspirator, and combinations thereof. An activation circuit is in connection with the source of energy and in connection with the handpiece. The activation circuit has two states: the first state disconnects the source of energy from the handpiece, the second state connects the source of energy to the handpiece. A sensing element is connected to the activation circuit. The sensing element signals the activation circuit to convert the activation circuit from the first state to the second state. The activation circuit may remain in the second state for a preestablished period of time followed by a reversion to the first state. The activation circuit may include a relay which may be connected to operate accessories including smoke evacuators, lights, videos or irrigators.

6258085, Jul 10, 2001

May 11, 1999

9/310059

Jeffrey L. Eggleston - Broomfield CO

Sherwood Services AG - Schaffhausen

A61B 1804

606 35

The present disclosure provides a method for determining the probability of a patient burn under a return electrode in a momopolar electrosurgical system comprising calculating a heating factor adjacent the return electrode utilizing a first algorithm, calculating a cooling factor adjacent the return electrode utilizing a second algorithm, subtracting the calculated cooling factor from the calculated heating factor to obtain a difference value, comparing the difference value to a threshold value, and adjusting the power dependent on the relationship of the difference value to the threshold value.

8080007, Dec 20, 2011

May 7, 2007

11/800687

James E. Dunning - Lafayette CO, US
Jeffrey L. Eggleston - Broomfield CO, US
Kyle R. Rick - Boulder CO, US

TYCO Healthcare Group LP - Mansfield MA

A61B 18/16

606 32, 606 35

A return pad includes a backing, at least one return electrode, and at least one ring sensor. The backing has a top side, a bottom side, and a periphery. The return electrode is disposed on the bottom side of the backing layer and is adapted to connect to a current generator. The ring sensor(s) is disposed in substantial concentric registration with the periphery of the backing and is configured to connect to a measuring component. The measuring component is operable to approximate contact quality of the return electrode during electrosurgical application and is configured to communicate with the generator.

8235980, Aug 7, 2012

Dec 14, 2011

13/326040

James E. Dunning - Lafayette CO, US
Jeffrey L. Eggleston - Broomfield CO, US
Kyle R. Rick - Boulder CO, US

TYCO Healthcare Group LP - Mansfield MA

A61B 18/16

606 32, 606 35

A return pad includes a backing, at least one return electrode, and at least one ring sensor. The backing has a top side, a bottom side, and a periphery. The return electrode is disposed on the bottom side of the backing layer and is adapted to connect to a current generator. The ring sensor(s) is disposed in substantial concentric registration with the periphery of the backing and is configured to connect to a measuring component. The measuring component is operable to approximate contact quality of the return electrode during electrosurgical application and is configured to communicate with the generator.

2006007, Apr 13, 2006

Oct 3, 2005

11/242475

Jeffrey Eggleston - Broomfield CO, US

A61B 18/16

606035000

The present disclosure is an apparatus for predicting the temperature at a return electrode in a monopolar electrosurgical system. The apparatus includes a detecting apparatus adapted to connect to a power source having an analog circuit configured to sense a change in an element wherein the element is selected from a group consisting of current, voltage, impedance or temperature, and any combination thereof. A comparator is included which is configured to compare the change in one of the above elements to a threshold value. The detecting apparatus predicts skin temperature of the patient at the return electrode of a monopolar electrosurgical system without contacting the patient.