Chad E Nelson

US Patent:

7763018, Jul 27, 2010

Filed:

Jul 28, 2006

Appl. No.:

11/495033

Inventors:

Arnold V. DeCarlo - Frederick CO, US
Gene H. Arts - Berthoud CO, US
Chad M. Nelson - Lafayette CO, US

Assignee:

Covidien AG - Neuhausen am Rheinfall

International Classification:

A61B 18/18

US Classification:

606 41, 606 49, 607 99

Abstract:

An ablation electrode system includes a handle assembly; a needle electrode assembly supported in and extending from the handle assembly. The needle electrode assembly includes an outer tube having at least a conductive distal tip and defining a cavity therein; and an inner tube disposed at least partially within the cavity of the outer tube and defining a lumen therein. The ablation electrode assembly includes a hub assembly fluidly connected to the needle electrode assembly. The hub assembly defines a first chamber and a second chamber; wherein the proximal end portion of the inner tube is in fluid communication with the first chamber and the proximal end portion of the outer tube is in fluid communication with the second chamber. The ablation electrode assembly includes a first fluid conduit fluidly connected to the first chamber; and a second fluid conduit fluidly connected to the second chamber.

US Patent:

20080287946, Nov 20, 2008

Filed:

Jul 30, 2008

Appl. No.:

12/182723

Inventors:

Arnold V. DeCarlo - Frederick CO, US
Gene H. Arts - Berthoud CO, US
Chad M. Nelson - Lafayette CO, US

International Classification:

A61B 18/14

US Classification:

606 41

Abstract:

A surgical device for performing a surgical procedure on a patient is provided and includes a handle assembly including a housing having a distal end and a proximal end; a tissue engaging member supported in and extending from the distal end of the housing of the handle assembly; at least one conduit having a first end operatively associated with the tissue engaging member and a second end extending from the housing of the handle assembly; and a strain relief member supported on the at least one conduit and connected to the housing, wherein the strain relief member and the housing are configured to enable poly-axial movement of the strain relief member with respect to the housing.

US Patent:

20120101487, Apr 26, 2012

Filed:

Oct 22, 2010

Appl. No.:

12/910442

Inventors:

Robert B. Cunningham - Longmont CO, US
Gene H. Arts - Berthoud CO, US
Timothy A. Turley - Highlands Ranch CO, US
Richard W. Wetz - Erie CO, US
Chad M. Nelson - Louisville CO, US

International Classification:

A61B 18/18

US Classification:

606 33

Abstract:

Disclosed is a spacer, configured to position microwave energy delivery devices, including a housing, with a housing body and a compression body, and at least one compression mechanism. The housing body forms a housing body cavity and a plurality of housing device apertures. The compression body forms a plurality of compression body apertures that each correspond to a housing device aperture. The compression body slideably engages the housing body cavity and at least a portion of the compression body is positioned within the compression body cavity. A compression mechanism is positioned between the housing body and the compression body and configured to provide a biasing force between the housing body and the compression body. In a first position the housing device apertures are misaligned with the compression body apertures and in the second position the housing apertures are aligned with the compression body apertures forming a plurality of aligned apertures.