David Anthony Newton

US Patent:

6494877, Dec 17, 2002

Filed:

Jun 23, 1998

Appl. No.:

09/102750

Inventors:

Roger C. Odell - Louisville CO
Paul H. Emerling - Nederland CO
David W. Newton - Boulder CO
Robert C. Steinway - Boulder CO
Don R. Boyle - Boulder CO

Assignee:

Electroscope, Inc. - Boulder CO

International Classification:

A61B 1700

US Classification:

606 1, 606 46, 606 51, 606205

Abstract:

An electrosurgical instrument having a safety shield for use in laparoscopic or like electrosurgical procedures designed to receive a plurality of electrosurgical instrument inserts. The electrosurgical inserts are designed so as to provide quick and easy attachment to the electrosurgical apparatus while still providing enhanced resistance to rotation forces encountered during an electrosurgical procedure, and to distribute actuation forces occurring during use. The safety shield includes a crimped portion for transferring forces that occur during operation of an articulating instrument inserted therein to a handle assembly of the electrosurgical instrument. The electrosurgical instrument has a seal that reduces or prevents electrical current from flowing between the active electrode and shield assemblies. The electrosurgical instrument further includes a connector assembly for receiving a mating cable connector and providing a fail-safe interconnection therewith. A second preferred embodiment of the electrosurgical instrument is adapted to be removably connected with a replaceable shield/connector assembly through which the instrument is inserted.

US Patent:

7465302, Dec 16, 2008

Filed:

Aug 12, 2005

Appl. No.:

11/202458

Inventors:

Roger C. Odell - Louisville CO, US
David W. Newton - Longmont CO, US

Assignee:

Encision, Inc. - Boulder CO

International Classification:

A61B 18/18

US Classification:

606 34, 606 46

Abstract:

A system and method for performing an electrosurgical procedure are disclosed. The method includes applying an active electrode to a patient and placing a return electrode on the patient so as to create a current path in tissue of the patient between the active electrode and the return electrode. A conductive element, which is operatively coupled to the active electrode, is coupled to a reference voltage with a low impedance path and a voltage is imparted to the active electrode so as to generate current in the current path. Any undesirable current flow that would otherwise flow from the active electrode to the reference voltage through the patient is limited to reduce a risk of harm to the patient.

US Patent:

8460284, Jun 11, 2013

Filed:

Oct 24, 2008

Appl. No.:

12/257562

Inventors:

Kurt Albert Aronow - Louisville CO, US
David Newton - Longmont CO, US
Don R. Boyle - Longmont CO, US

Assignee:

Encision, Inc. - Boulder CO

International Classification:

A61B 18/12

US Classification:

606 35, 606 32, 606 34

Abstract:

A system and method for detecting faults within an electrosurgical instrument having a shield and an active electrode uses multiple possible fault conditions. In one embodiment the monitoring system comprises an electrosurgical generator coupled to the electrosurgical instrument and adapted to deliver power to the active electrode of the electrosurgical instrument, monitoring circuitry coupled to the electrosurgical generator and the electrosurgical instrument, wherein the monitoring circuitry comprises an active electrode voltage sensor an active electrode current sensor and a shield current sensor. The monitoring circuitry measures at least two of the active voltage, the active or return electrode current, and the shield current.

US Patent:

20060041252, Feb 23, 2006

Filed:

Aug 12, 2005

Appl. No.:

11/202605

Inventors:

Roger Odell - Louisville CO, US
David Newton - Longmont CO, US

International Classification:

A61B 18/12

US Classification:

606032000, 606035000, 606034000

Abstract:

A system and method for performing an electrosurgical procedure are disclosed. The method includes applying an active electrode to a patient and placing a return electrode on the patient so as to create a current path in tissue of the patient between the active electrode and the return electrode. A conductive element, which is operatively coupled to the active electrode, is coupled to a reference voltage with a low impedance path and a voltage is imparted to the active electrode so as to generate current in the current path. Any undesirable current flow that would otherwise flow from the active electrode to the reference voltage through the patient is limited to reduce a risk of harm to the patient.

US Patent:

20100087810, Apr 8, 2010

Filed:

Oct 13, 2009

Appl. No.:

12/577747

Inventors:

Roger C. Odell - Louisville CO, US
David W. Newton - Longmont CO, US

International Classification:

A61B 18/16

US Classification:

606 35, 606 34

Abstract:

Systems, apparatus, and methods for monitoring electrosurgical systems are disclosed. In one variation, an electrosurgical monitoring apparatus includes at least two monitoring channels. Each of the monitoring channels in this embodiment are configured to monitor fault current between at least two separate conductive components of an electrosurgical system, and the at least two monitoring channels are each configured to send a control signal so as to control an application of power to an electrosurgical device responsive to the fault currents.

US Patent:

57698414, Jun 23, 1998

Filed:

Jun 13, 1995

Appl. No.:

8/489934

Inventors:

Roger C. Odell - Louisville CO
Paul H. Emerling - Nederland CO
David W. Newton - Boulder CO
Robert C. Steinway - Boulder CO
Don R. Boyle - Boulder CO

Assignee:

Electroscope, Inc. - Boulder CO

International Classification:

A61B 1739

US Classification:

606 1

Abstract:

An electrosurgical instrument having a safety shield for use in laparoscopic or like electrosurgical procedures designed to receive a plurality of electrosurgical instrument inserts. The electrosurgical inserts are designed so as to provide quick and easy attachment to the electrosurgical apparatus while still providing enhanced resistance to rotation forces encountered during an electrosurgical procedure, and to distribute actuation forces occurring during use. The safety shield includes a crimped portion for transferring forces that occur during operation of an articulating instrument inserted therein to a handle assembly of the electrosurgical instrument. The electrosurgical instrument has a seal that reduces or prevents electrical current from flowing between the active electrode and shield assemblies. The electrosurgical instrument further includes a connector assembly for receiving a mating cable connector and providing a fail-safe interconnection therewith. A second preferred embodiment of the electrosurgical instrument is adapted to be removably connected with a replaceable shield/connector assembly through which the instrument is inserted.

US Patent:

44162766, Nov 22, 1983

Filed:

Oct 26, 1981

Appl. No.:

6/315053

Inventors:

David W. Newton - Boulder CO
William G. Paterson - Longmont CO

Assignee:

Valleylab, Inc. - Boulder CO

International Classification:

A61B 1739

US Classification:

12830313

Abstract:

A return electrode monitoring system for use with a split patient return electrode having two, electrically isolated electrode elements adapted for contacting a patient, the system comprising means responsive to the impedance between the two electrode elements for producing a signal which is a function of the impedance; means for establishing a desired range having an upper limit and a lower limit for the impedance when the patient is in contact with the electrode elements; determining means responsive to the signal for determining whether the impedance is within the desired range; and adjusting means for adjusting the upper limit to adapt the system to the particular impedance of the patient in response to the particular impedance occurring within the desired range.

US Patent:

48279277, May 9, 1989

Filed:

Dec 26, 1984

Appl. No.:

6/686390

Inventors:

David W. Newton - Boulder CO

Assignee:

Valleylab, Inc. - Boulder CO

International Classification:

A61B 1739

US Classification:

12830314

Abstract:

An electrosurgical generating system and method including an electrosurgical generator; and a handpiece including an active electrode connected to the electrosurgical generator for applying electrosurgical current from the generator to a patient, the handpiece having switches disposed thereat for changing the level of the output power delivered from said generator to said patient whereby the change may be effected from the sterile field of a surgical procedure. The above switches together with cut and coagulation mode switches disposed at the handpiece are so connected as to minimize the number of wires needed to connect the handpiece to the generator. Decoding circuitry for determining the status of the switches is also disclosed.