US5292320A — Radial medical laser delivery device

Claim 1

Independent Claim 125 words

A medical delivery system capable of emitting radiation with wavelengths between 190 nm and 16 um in one or more essentially directed, predetermined patterns, which comprises: (a) at least one solid optical fiber, having a core and a cladding on said core and said cladding having refractive index smaller than the core, having an input end suitably configured to connect to an appropriate radiation source and having a distal end in the proximity of which two or more grooves are penetrating into the core, said grooves having at least partial reflector capability so as to deflect radiation in one or more predetermined patterns; and, (b) a cap placed over said at least one fiber at its distal end and over said two or more grooves.

Claim 2

Dependent Claim 125 words

A medical delivery system capable of emitting radiation with wavelengths between 190 nm and 16 um in one or more essentially directed, predetermined patterns, which comprises: (a) at least one solid optical fiber, having a core and a cladding on said core and said cladding having refractive index smaller than the core, having an input end suitably configured to connect to an appropriate radiation source and having a distal end in the proximity of which two or more grooves are penetrating into the core, said grooves having at least partial reflector capability so as to deflect radiation in one or more predetermined patterns; and, (b) a cap placed over said at least one fiber at its distal end and over said two or more grooves.

Claim 3

Dependent Claim 27 words

A radial delivery system as claimed in claim 1, further characterized by filling the grooves with a material having significantly lower reflective index than the fiber core.

Claim 4

Dependent Claim 27 words

A medical radiation delivery system as claimed in claim 1, wherein said at least one solid optical fiber transmits radiation at wavelengths between 190 and 3000 nm.

Claim 5

Dependent Claim 33 words

A medical radiation delivery system as claimed in claim 1, wherein said at least one solid, fiber is a silver halide fiber which transmits radiation at wavelengths between 4 um and 16 um.

Claim 6

Dependent Claim 26 words

A medical radiation delivery system as claimed in claim 1, wherein said grooves are only on one side of said at least one solid optical fiber.

Claim 7

Dependent Claim 41 words

A medical radiation delivery system as claimed in claim 1, wherein said grooves have inclinations which vary in said at least one solid optical fiber so as to give a radiation pattern converging at a predetermined distance from the fiber axis.

Claim 8

Dependent Claim 55 words

A medical radiation delivery device system as claimed in claim 1, wherein said at least one solid optical fiber has a distal end which is located within an inflatable balloon in a movable manner, said inflatable balloon having a cylindrical portion, and being transparent at least over its cylindrical portion to the radiation wavelength used.

Claim 9

Independent Claim 160 words

A method of performing a laser prostatectomy procedure, comprising: (a) the inserting of a cystoscope into the urethra; (b) positioning a device within said cystoscope, which device includes at least one solid optical fiber, having a core and having a cladding on said core and said cladding having a reflective index smaller than the reflective index of the core, having an input end suitably configured to connect to an appropriate radiation source and having a distal end in the proximity of which two or more grooves are penetrating into the core, said grooves having at least partial reflector capability so as to deflect radiation thereto radially in one or more predetermined patterns; and having a cap placed over said fiber at its distal end and over said two or more grooves said positioning of said device being such that at least said distal end said cap are positive into the urethra; and, (c) irradiating the prostate area to be degenerated.

Claim 10

Independent Claim 160 words

A method of performing a laser prostatectomy procedure, comprising: (a) the inserting of a cystoscope into the urethra; (b) positioning a device within said cystoscope, which device includes at least one solid optical fiber, having a core and having a cladding on said core and said cladding having a reflective index smaller than the reflective index of the core, having an input end suitably configured to connect to an appropriate radiation source and having a distal end in the proximity of which two or more grooves are penetrating into the core, said grooves having at least partial reflector capability so as to deflect radiation thereto radially in one or more predetermined patterns; and having a cap placed over said fiber at its distal end and over said two or more grooves said positioning of said device being such that at least said distal end said cap are positive into the urethra; and, (c) irradiating the prostate area to be degenerated.

Claim 11

Dependent Claim 33 words

The method of claim 8 wherein said device is further characterized by said grooves having been filled with a material having significantly lower reflective index than the reflective index of the fiber core.

Claim 12

Independent Claim 145 words

A method of performing photodynamic therapy, comprising: (a) applying a photosensitive substance to an area to be treated or to a distal end of the device set forth below; (b) inserting a device which includes at least one solid optical fiber, having a core and a cladding on said core and said cladding having refractive index smaller than the core, having an input end suitably configured to connect to an appropriate radiation source and having a distal end in the proximity of which two or more grooves are penetrating into the core, said grooves having at least partial reflector capability so as to deflect radiation thereto radially in one or more predetermined patterns, and a cap being placed over said at least one fiber at its distal end and over said two or more grooves; and, (c) irradiating the tissue to a predetermined dosage level.

Claim 13

Independent Claim 145 words

A method of performing photodynamic therapy, comprising: (a) applying a photosensitive substance to an area to be treated or to a distal end of the device set forth below; (b) inserting a device which includes at least one solid optical fiber, having a core and a cladding on said core and said cladding having refractive index smaller than the core, having an input end suitably configured to connect to an appropriate radiation source and having a distal end in the proximity of which two or more grooves are penetrating into the core, said grooves having at least partial reflector capability so as to deflect radiation thereto radially in one or more predetermined patterns, and a cap being placed over said at least one fiber at its distal end and over said two or more grooves; and, (c) irradiating the tissue to a predetermined dosage level.

Claim 14

Dependent Claim 33 words

The method of claim 10, wherein said device is further characterized by said grooves having been filled with a material having significantly lower reflective index than the reflective index of the fiber core.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1997-03-07	1997-09-06	1998-03-08	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2001-03-07	2001-09-06	2002-03-08	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2005-03-07	2005-09-06	2006-03-08	$7700.00	Window Closed / Lapsed

Radial medical laser delivery device

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