Michael F Dumont

US Patent:

57796734, Jul 14, 1998

Filed:

Jun 26, 1995

Appl. No.:

8/494333

Inventors:

Laurence A. Roth - Windham NH
Stephen J. Herman - Andover MA
Farhad Khosravi - San Mateo CA
David Melanson - Hudson NH
Michael Dumont - Stratham NH
Patrick K. Campbell - Georgetown MA
John C. Spiridigliozzi - Dedham MA

Assignee:

Focal, Inc. - Lexington MA

International Classification:

A61M 2500

US Classification:

604101

Abstract:

Devices for providing polymeric layers on the interior surface of body lumens and spaces are disclosed. The devices can include proximal and distal occlusion elements to define the treatment space and an optical emitter to provide light for a photopolymerization procedure. The devices may include a molding member for providing a thick polymeric gel. Alternatively, devices without a molding member may be used to carry out an interfacial polymerization procedure.

US Patent:

56650639, Sep 9, 1997

Filed:

Jun 24, 1994

Appl. No.:

8/265448

Inventors:

Laurence A. Roth - Windham NH
Stephen J. Herman - Andover MA
Farhad Khosravi - Newton MA
David Melanson - Chelmsford MA
Michael Dumont - Stratham NH

Assignee:

Focal, Inc. - Lexington MA

International Classification:

A61M 2500

US Classification:

604 53

Abstract:

Devices for providing polymeric layers on the interior surface of body lumens and spaces are disclosed. The devices can include proximal and distal occlusion elements to define the treatment space and an optical emitter to provide light for a photopolymerization procedure. The devices may include a molding member for providing a thick polymeric gel. Alternatively, devices without a molding member may be used to carry out an interfacial polymerization procedure.

US Patent:

60043156, Dec 21, 1999

Filed:

Sep 16, 1996

Appl. No.:

8/714189

Inventors:

Michael G. Dumont - Hampton NH

Assignee:

Focal, Inc. - Lexington MA

International Classification:

A61B 1736

US Classification:

606 15

Abstract:

An optical fiber device includes a polymeric optical fiber having a proximal end for coupling to a source of light, and a diffusing region. The polymeric optical fiber includes a core and a cladding around the core. The diffusing region includes a length of the polymeric optical fiber in which the cladding is partially removed to expose the core and in which the exposed core and the remaining cladding have a roughened surface for outwardly diffusing light carried through the polymeric optical fiber. The diffusing region is preferably formed by abrasion, for example by directing a particle jet at the optical fiber while rotating and translating the optical fiber with respect to the particle jet. The particle jet may include microscopic glass beads which roughen the optical fiber core. The density of scattering sites may be varied along the length of the diffusing region to produce a desired light output pattern.