Robert M Pearson

US Patent:

6622731, Sep 23, 2003

Filed:

Jan 11, 2002

Appl. No.:

10/044081

Inventors:

Steven A. Daniel - Fremont CA
Daniel J. Balbierz - Redwood City CA
Robert D. Russell - Isle of Palms SC
Robert Pearson - San Jose CA
Andres Tamayo - Stanford CA
Takehito Jimbo - San Bruno CA
Karen Frischmeyer - Palo Alto CA

Assignee:

Rita Medical Systems, Inc. - Mountain View CA

International Classification:

A61B 1900

US Classification:

128898, 606 29, 606214, 606 41

Abstract:

Ablation devices and associated methods are provided for use in palliative treatment of a bone tumor on or in a compact bone region. The bone treatment devices include an elongate probe having a distal end. A proximal end of the probe supports placement in a location at or adjacent to the bone tumor. Electrodes are carried within the probe for deployment from the distal end into the bone tumor. The electrodes may be shapable to create, upon deployment, an array of electrodes that defines a geometric area within the bone tumor. Application of energy, for example energy from a radio frequency (RF) source, to the area of the bone tumor via the electrodes destroys at least a portion of the nerve receptors located in or adjacent to the tumor and produces a reduction in pain associated with the bone tumor. Liquid, such as a polymer in liquid form, may be injected through an electrode needle, with electrode heating being employed to allow introduction of the polymer solution through the needle and/or hardening at the site of injection.

US Patent:

6962587, Nov 8, 2005

Filed:

Jul 25, 2001

Appl. No.:

09/916235

Inventors:

Theodore C. Johnson - San Francisco CA, US
Daniel J. Balbierz - Redwood City CA, US
Robert Pearson - San Jose CA, US

Assignee:

Rita Medical Systems, Inc. - Mountain View CA

International Classification:

A61B018/18

US Classification:

606 41, 128898

Abstract:

An embodiment of the invention provides a method for detecting and treating a tumor using tissue localized volumetric impedance measurement. The method includes providing an impedance measurement apparatus having a plurality of resilient members deployable with curvature and configured to sample tissue impedance through a plurality of conductive pathways. The apparatus is configured to be coupled to at least one of an energy delivery device, a power supply, a switching device or logic resources. The apparatus is then positioned at a selected tissue site and the impedance array deployed to define a sample volume. The impedance array is then utilized to make impedance measurements through a plurality of conductive pathways. Information from the impedance measurements is then utilized to determine a tissue condition of the sample volume. Energy is then delivered from the energy delivery device to ablate or necrose at least a portion of the tumor.

US Patent:

7108696, Sep 19, 2006

Filed:

Sep 22, 2003

Appl. No.:

10/668433

Inventors:

Steven A. Daniel - Fremont CA, US
Daniel J. Balbierz - Redwood City CA, US
Robert D. Russell - Isle of Palms SC, US
Robert Pearson - San Jose CA, US
Andres Tamayo - Stanford CA, US
Takehito Jimbo - San Bruno CA, US
Karen Frischmeyer - Palo Alto CA, US

Assignee:

Rita Medical Systems, Inc. - Fremont CA

International Classification:

A61B 18/18
A61B 17/50

US Classification:

606 41, 607101

Abstract:

Ablation devices and associated methods are provided for use in palliative treatment of a bone tumor on or in a compact bone region. The bone treatment devices include an elongate probe having a distal end. A proximal end of the probe supports placement in a location at or adjacent to the bone tumor. Electrodes are carried within the probe for deployment from the distal end into the bone tumor. The electrodes may be shapable to create, upon deployment, an array of electrodes that defines a geometric area within the bone tumor. Application of energy, for example energy from a radio frequency (RF) source, to the area of the bone tumor via the electrodes destroys at least a portion of the nerve receptors located in or adjacent to the tumor and produces a reduction in pain associated with the bone tumor. Liquid, such as a polymer in liquid form, may be injected through an electrode needle, with electrode heating being employed to allow introduction of the polymer solution through the needle and/or hardening at the site of injection.

US Patent:

7344533, Mar 18, 2008

Filed:

Sep 28, 2002

Appl. No.:

10/260187

Inventors:

Robert M. Pearson - San Jose CA, US
Steven A. Daniel - Fremont CA, US
Daniel J. Balbierz - Redwood City CA, US
Theodore C. Johnson - Ann Arbor MI, US
Zia Yassinzadeh - San Jose CA, US

Assignee:

Angiodynamics, Inc. - Queensbury NY

International Classification:

A61B 18/18

US Classification:

606 41, 607105, 607102, 606 42

Abstract:

A method and apparatus for carrying our thermal ablation of target tissue is disclosed. The apparatus includes an RF ablation device having a multi-electrode electrode assembly designed to be deployed in target tissue, defining a selected-volume tissue region to be ablated, and having infusion channels for infusing a liquid into the target tissue during the ablation process. A control unit in the apparatus is operably connected to an RF energy source, for controlling the RF power level supplied to the electrodes, and to an infusion device, for controlling the rate of infusion of a liquid through the device into the tissue. During both electrode deployment and tissue ablation, impedance and or temperature measurements made within the tissue are used to control the RF source and infusion device, for optimizing the time and extent of tissue ablation.

US Patent:

7419487, Sep 2, 2008

Filed:

Jul 25, 2001

Appl. No.:

09/916214

Inventors:

Theodore C. Johnson - San Francisco CA, US
Daniel J. Balbierz - Redwood City CA, US
Robert M. Pearson - San Jose CA, US

Assignee:

Angiodynamics, Inc. - Queensbury NY

International Classification:

A61B 18/18

US Classification:

606 41, 607102, 606 42

Abstract:

An apparatus for treating tumors comprises an elongated delivery device that includes a lumen and is maneuverable in tissue. An impedance sensor array is deployable from the elongated device and configured to be coupled to at least one of an energy source or a switching device. The impedance array includes a plurality of resilient members, at least one of the plurality being positionable in the elongated device in a compacted state and deployable with curvature into tissue from the elongated device in a deployed state. In the deployed state, the plurality of resilient members defines a sample volume. At least one of the resilient members includes an impedance sensor and at least a portion of the array is configured to sample tissue impedance through a plurality of conductive pathways. An energy delivery device is coupled to one of the array, the at least one resilient member or the elongated device.

US Patent:

7942873, May 17, 2011

Filed:

Mar 24, 2006

Appl. No.:

11/388724

Inventors:

Harry Kwan - Fremont CA, US
Robert Pearson - San Jose CA, US
Darrin Uecker - San Mateo CA, US
John Zepeda - Los Altos CA, US

Assignee:

AngioDynamics, Inc. - Latham NY

International Classification:

A61B 18/18

US Classification:

606 45, 606 41

Abstract:

Ablation devices and associated methods are provided for use in ablating the margin of a cavity such as a surgical or body cavity. The ablation apparatus includes an integral or connected elongate probe and an elongate sleeve. Suction can be applied with a vacuum source operably connected to the proximal end region of the sleeve, whereby tissue of the surgical cavity is drawn against the surface of the sleeve. The probe includes one or more electrodes disposed at the probe's distal end region, for ablating tissue when the electrode(s) are activated to create an ablated margin of tissue at least partially surrounding the surgical cavity.

US Patent:

8241343, Aug 14, 2012

Filed:

Nov 7, 2008

Appl. No.:

12/267403

Inventors:

Valerie L. Douglass - Mountain View CA, US
Robert M. Pearson - San Jose CA, US
James G. Lovewell - San Leandro CA, US
David A. Blau - Cupertino CA, US

Assignee:

AngioDynamics, Inc. - Latham NY

International Classification:

A61N 5/06

US Classification:

607 88, 359387, 607 98

Abstract:

A lighting device for use as a visual indicator in a medical probe is provided. The lighting device includes one or more light emitting elements that are used as a visual status indicator for the medical probe, and a driver circuit that receives current from a power source and drives the light emitting elements. The driver circuit includes a current sensor to sense a current flowing through the light emitting elements, and a shut off switch. The shut off switch shuts off the power source current from the light emitting elements based on the sensed current from the current sensor.

US Patent:

8372064, Feb 12, 2013

Filed:

Nov 7, 2008

Appl. No.:

12/267307

Inventors:

Valerie L. Douglass - Mountain View CA, US
Robert M. Pearson - San Jose CA, US
James G. Lovewell - San Leandro CA, US
David A. Blau - Cupertino CA, US

Assignee:

AngioDynamics, Inc. - Latham NY

International Classification:

A61B 18/18

US Classification:

606 19, 606 41

Abstract:

A device for delivering therapeutic energy to tissue is provided. The device includes a proximal segment and a distal segment having one or more electrodes for delivering the therapeutic energy to the tissue. An articulating segment connects the proximal segment and the distal segment such that the distal segment is articulatable with respect to a longitudinal axis of the proximal segment. In one aspect of the invention, the articulating segment includes a living hinge. In another aspect of the invention, at least one electrically conductive articulating cable runs along the articulating segment, wherein the articulating cable is used both to articulate the distal segment and to deliver the therapeutic energy to the one or more electrodes.