Eric B Mathews

US Patent:

6500185, Dec 31, 2002

Filed:

Sep 29, 2000

Appl. No.:

09/676849

Inventors:

Eric D. Mathews - Needham MA
Paul J. Dobson - Hanover MA

Assignee:

Primus Medical, Inc. - Hanover MA

International Classification:

A41B 1722

US Classification:

606159, 606127

Abstract:

An instrument for removal of an object, e. g. , a blood clot lodged in a blood vessel, has a longitudinally extending support that defines an axis. The support has a flexible distal section and a rigid proximal section. The flexible distal section has a compressed state, in which it defines a first path relative to the axis. A core-wire extending along the axis has a relaxed state in which it defines a second path relative to the axis. An anchor disposed on the flexible distal section and attached to the core-wire causes the flexible distal section to follow the same path. An actuator engaged to a proximal end of the core-wire enables a surgeon to selectively apply a tensile force thereto. This tensile force causes the core-wire and the flexible distal section to transition together between the first path and the second path.

US Patent:

6652536, Nov 25, 2003

Filed:

Jun 19, 2002

Appl. No.:

10/175538

Inventors:

Eric D. Mathews - Needham MA
Paul J. Dobson - Hanover MA

Assignee:

Primus Medical, Inc. - Hanover MA

International Classification:

A61B 1722

US Classification:

606113, 606127

Abstract:

An instrument for removal of an object, e. g. , a blood clot lodged in a blood vessel, has a longitudinally extending support that defines an axis. The support has a flexible distal section having a compressed state, in which it defines a first path relative to the axis. A core-wire extending along the axis has a relaxed state in which it defines a second path relative to the axis. An anchor disposed on the flexible distal section and attached to the core-wire causes the flexible distal section to follow the same path. An actuator engaged to a proximal end of the core-wire enables selective application of a tensile force thereto. This tensile force causes the core-wire and the flexible distal section to transition together between the first path and the second path.

US Patent:

7731669, Jun 8, 2010

Filed:

May 10, 2007

Appl. No.:

11/801703

Inventors:

Eric D. Mathews - Walpole MA, US
Andrew M. Whitehead - Marshfield MA, US
John R. Panicci - Plymouth MA, US

Assignee:

Concert Medical, LLC - Norwell MA

International Classification:

A61B 5/00
B21F 15/02
F16B 2/02
F16B 7/04
F16D 1/02

US Classification:

600585, 140111, 403311, 403333, 403334

Abstract:

A composite guidewire comprising a proximal wire segment having a proximal end, a distal end and a longitudinal axis extending therebetween, the distal end being formed with a first flat planar bonding face which extends parallel to the longitudinal axis, the proximal wire segment having a first elasticity; a distal wire segment having a proximal end, a distal end and a longitudinal axis extending therebetween, the proximal end being formed with a second flat planar bonding face which extends parallel to the longitudinal axis, the distal wire segment having a second elasticity; wherein the first and second flat planar bonding faces of the proximal wire segment are formed complementary to one another; and further wherein the proximal and distal wire segments are joined together by bonding the first flat planar bonding face to the second flat planar bonding face in an overlapping manner and a method for forming a composite guidewire.

US Patent:

20050253680, Nov 17, 2005

Filed:

Apr 2, 2003

Appl. No.:

10/509713

Inventors:

Eric Mathews - Needham MA, US
Paul Dobson - Hanover MA, US

International Classification:

H01H037/52
H01H037/50

US Classification:

337395000, 337333000

Abstract:

A temperature-controlled actuator has a housing () with a proximal end and a moveable distal portion. A core-wire () extends along the housing, with its distal section anchored to the distal portion of the housing. The core-wire's distal section has an austenite state and a martensite state. The distal section moves the distal portion by transitioning between the austenite and martensite states in response to a temperature change along a thermometric section () of the core-wire. A proximal section in mechanical communication with the core-wire's distal section transmits tension, provided by a tensioning element (), to the distal section. The tensioning element, which is coupled to the proximal section of the core-wire, constantly applies a tensioning force to the core-wire.

US Patent:

20090209987, Aug 20, 2009

Filed:

Feb 1, 2006

Appl. No.:

11/815273

Inventors:

Eric D. Mathews - Needham MA, US
Paul J. Dobson - Hanover MA, US
Jeffry Coats - Plymouth MA, US

International Classification:

A61B 17/22

US Classification:

606159

Abstract:

A surgical snare for ensnaring an object in a patient includes a flexible section that selectively switches between an insertion shape and an ensnaring shape; and a capture-area enhancer deployed when the flexible section assumes the ensnaring shape. An actuator coupled to the flexible section causes the flexible section to transition between the insertion shape and the ensnaring shape.

US Patent:

55757871, Nov 19, 1996

Filed:

Feb 27, 1995

Appl. No.:

8/394763

Inventors:

George S. Abela - Wellesley MA
Stephan E. Friedl - Ithaca NY
Eric D. Mathews - Boston MA

Assignee:

Abela Laser Systems, Inc. - Natick MA
University of Florida - Gainesville FL

International Classification:

A61B 1736

US Classification:

606 15

Abstract:

A catheter uses a steerable outer catheter with an inner catheter rotatable and extendable with respect to the outer catheter. The outer catheter may be positioned within a patient's heart and a portion of the outer catheter may provide movement like that of a windshield wiper by manipulation of a spring. By combining the windshield wiper type movement with the extension and rotation of the inner catheter relative to the outer catheter, a large area within a patient's heart may be readily mapped for conduction tissue and be subjected to laser ablation if appropriate. Various configurations provide flexibility in relatively positioning of windows used to apply laser energy and ring electrodes used to sense conduction tissue.

US Patent:

56517866, Jul 29, 1997

Filed:

Jun 7, 1995

Appl. No.:

8/484895

Inventors:

George S. Abela - Wellesley MA
Stephan E. Friedl - Watertown MA
Eric D. Mathews - North Attleboro MA

Assignee:

Abela Laser Systems, Inc. - E. Lansing MI
University of Florida Research Foundation, Inc. - Gainesville FL

International Classification:

A61B 1736

US Classification:

606 15

Abstract:

A catheter uses a steerable outer catheter with an inner catheter rotatable and extendable with respect to the outer catheter. The outer catheter may be positioned within a patient's heart and a portion of the outer catheter may provide movement like that of a windshield wiper by manipulation of a spring. By combining the windshield wiper type movement with the extension and rotation of the inner catheter relative to the outer catheter, a large area within a patient's heart may be readily mapped for conduction tissue and be subjected to laser ablation if appropriate. Various configurations provide flexibility in relatively positioning of windows used to apply laser energy and ring electrodes used to sense conduction tissue. Some embodiments provide only mapping (no ablation) or with ablation by other then Various anchoring techniques are described.

US Patent:

54644046, Nov 7, 1995

Filed:

Sep 20, 1993

Appl. No.:

8/123207

Inventors:

George S. Abela - Wellesley MA
Stephan E. Friedl - Ithaca NY
Eric D. Mathews - Boston MA

Assignee:

Abela Laser Systems, Inc. - Natick MA
University of Florida - Gainesville FL

International Classification:

A61B 1736

US Classification:

606 15

Abstract:

A catheter uses a steerable outer catheter with an inner catheter rotatable and extendable with respect to the outer catheter. The outer catheter may be positioned within a patient's heart and a portion of the outer catheter may provide movement like that of a windshield wiper by manipulation of a spring. By combining the windshield wiper type movement with the extension and rotation of the inner catheter relative to the outer catheter, a large area within a patient's heart may be readily mapped for conduction tissue and be subjected to laser ablation if appropriate. Various configurations provide flexibility in relatively positioning of windows used to apply laser energy and ring electrodes used to sense conduction tissue.