Thomas P Coen

US Patent:

20020198520, Dec 26, 2002

Filed:

Jun 20, 2001

Appl. No.:

09/886754

Inventors:

Thomas Coen - Pleasanton CA, US
Katie Messing - San Jose CA, US
Dorin Panescu - San Jose CA, US
David Swanson - Campbell CA, US
Miriam Taimisto - San Jose CA, US

Assignee:

Scimed Life Systems, Inc.

International Classification:

A61B018/18

US Classification:

606/041000

Abstract:

A medical system for performing a tissue ablation procedure comprises a guide sheath and an ablation catheter disposed within an internal lumen of the catheter. The guide sheath has a distal end that includes irrigation exit ports that are configured to perfuse irrigation fluid in a distal direction over the ablation electrode of the catheter when the distal end of the catheter protrudes from the guide sheath. In this manner, the ablation electrode can be advantageously cooled during the tissue ablation process, thereby maximizing the size and depth of the ablation lesion and reducing the duration of the ablation process.

US Patent:

20050177151, Aug 11, 2005

Filed:

Jul 23, 2003

Appl. No.:

10/625194

Inventors:

Thomas Coen - Pleasanton CA, US
Katie Krueger - San Jose CA, US
Dorin Panescu - San Jose CA, US
David Swanson - Campbell CA, US
Miriam Taimisto - San Jose CA, US

International Classification:

A61B018/18

US Classification:

606041000

Abstract:

A medical system for performing a tissue ablation procedure comprises a guide sheath and an ablation catheter disposed within an internal lumen of the catheter. The guide sheath has a distal end that includes irrigation exit ports that are configured to perfuse irrigation fluid in a distal direction over the ablation electrode of the catheter when the distal end of the catheter protrudes from the guide sheath. In this manner, the ablation electrode can be advantageously cooled during the tissue ablation process, thereby maximizing the size and depth of the ablation lesion and reducing the duration of the ablation process.

US Patent:

57796467, Jul 14, 1998

Filed:

Aug 27, 1997

Appl. No.:

8/918913

Inventors:

Josef V. Koblish - Framingham MA
Thomas T. Coen - Westboro MA
George J. Klein - London, CA

Assignee:

E.P. Technologies Inc. - San Jose CA

International Classification:

A61B 500

US Classification:

600567

Abstract:

A deflectable biopsy catheter for obtaining a tissue sample from a body cavity of a patient comprising: an axially elongated catheter shaft having proximal and distal portions respectively terminating at proximal and distal ends, the catheter shaft being sized and constructed to be advanced into a body cavity of a patient; a deflection wire coupled to the distal portion of the catheter shaft and extending within the catheter to the proximal end thereof; and a pair of biopsy jaws coupled to the distal end of the catheter shaft and having first and second opposed free cutting surfaces exposable for contact with a selected area of tissue within the patient's body cavity and movable with respect to each other to cut a tissue sample from the selected area of tissue. Schemes for obtaining samples from body cavities (e. g. , the gastrointestinal tract, the heart, the intestines, the uterus, the muscles, the bile duct, and the esophagus) are disclosed.

US Patent:

59065907, May 25, 1999

Filed:

Jun 12, 1997

Appl. No.:

8/873483

Inventors:

Kulbir Singh Hunjan - Woburn MA
Josef V. Koblish - Sunnyvale CA
Thomas P. Coen - Pleasanton CA

Assignee:

EP Technologies, Inc. - Sunnyvale CA

International Classification:

A61M 3700

US Classification:

604 95

Abstract:

A bidirectional catheter with a deflectable tip at a distal end includes a handle at a proximal end and a tubular member extending between the tip and the handle. The handle includes a first piston member slidably mounted in a handle base with proximal ends of steering wires secured in the handle. The steering wires extend through the tubular member with respective distal ends thereof secured to circumferentially spaced portions of the distal end tip. Axial displacement of the piston member in a second direction conversely urges deflection of the distal end tip in a second direction by tensioning the other wire relative to the first wire. The piston member can include another piston member slidable in the first piston member with the proximal ends of the steering wires secured in the first mentioned piston member and the handle member, respectively, and with the other piston member supporting a proximal end of the tubular member.

US Patent:

59578637, Sep 28, 1999

Filed:

Jul 7, 1998

Appl. No.:

9/111350

Inventors:

Josef V. Koblish - Framingham MA
Thomas P. Coen - Westboro MA
George J. Klein - London, CA

Assignee:

Boston Scientific Corporation - Natick MA

International Classification:

A61B 500

US Classification:

600567

Abstract:

A deflectable biopsy catheter for obtaining a tissue sample from a body cavity of a patient comprising: an axially elongated catheter shaft having proximal and distal portions respectively terminating at proximal and distal ends, the catheter shaft being sized and constructed to be advanced into a body cavity of a patient; a deflection wire coupled to the distal portion of the catheter shaft and extending within the catheter to the proximal end thereof; and a pair of biopsy jaws coupled to the distal end of the catheter shaft and having first and second opposed free cutting surfaces exposable for contact with a selected area of tissue within the patient's body cavity and movable with respect to each other to cut a tissue sample from the selected area of tissue. Schemes for obtaining samples from body cavities (e. g. , the gastrointestinal tract, the heart, the intestines, the uterus, the muscles, the bile duct, and the esophagus) are disclosed.

US Patent:

57158320, Feb 10, 1998

Filed:

Feb 28, 1995

Appl. No.:

8/395968

Inventors:

Josef V. Koblish - Framingham MA
Thomas P. Coen - Westboro MA
George J. Klein - London, CA

Assignee:

Boston Scientific Corporation - Natick MA

International Classification:

A61B 1000

US Classification:

128754

Abstract:

A deflectable biopsy catheter for obtaining a tissue sample from a body cavity of a patient comprising: an axially elongated catheter shaft having proximal and distal portions respectively terminating at proximal and distal ends, the catheter shaft being sized and constructed to be advanced into a body cavity of a patient; a deflection wire coupled to the distal portion of the catheter shaft and extending within the catheter to the proximal end thereof; and a pair of biopsy jaws coupled to the distal end of the catheter shaft and having first and second opposed free cutting surfaces exposable for contact with a selected area of tissue within the patient's body cavity and movable with respect to each other to cut a tissue sample from the selected area of tissue. Schemes for obtaining samples from body cavities (e. g. , the gastrointestinal tract, the heart, the intestines, the uterus, the muscles, the bile duct, and the esophagus) are disclosed.

US Patent:

60832223, Jul 4, 2000

Filed:

Oct 18, 1996

Appl. No.:

8/730896

Inventors:

George J. Klein - London, CA
Josef V. Koblish - Framingham MA
Thomas T. Coen - Westboro MA

Assignee:

Boston Scientific Corporation - Natick MA

International Classification:

A61B 1739
A61B 50402

US Classification:

606 41

Abstract:

A deflectable catheter for ablating tissue in the heart of a patient comprising: an axially elongated catheter shaft sized and constructed to be advanced through the vasculature of a patient into the patient's heart; a deflection wire; and an ablation electrode having first and second opposed electrically conductive surfaces exposable for contact with a selected area of tissue within the patient's heart and movable with respect to each other to apply gripping force to the contacted area of heart tissue for stabilizing the position of the electrically conductive surfaces of the ablation electrode relative to the selected area of heart tissue. The ablation electrode has a first rigid surface exposed for contact with the vasculature of the patient during advancement of the catheter therethrough and has an electrically conductive second rigid surface exposable for contact with a selected area of tissue within the patient's heart, wherein the axially transverse area circumscribed by the first surface of the ablation electrode is less than the tissue-contacting area exposable by the second rigid surface. Therapeutic treatments of the heart of a patient are also disclosed.