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Title: Intrauterine device for laser light diffusion and method of using the same

An improved device for delivery of photoenergy from a light source, such as a laser, into a uterine cavity for photodynamic therapy is comprised of a plurality of optic fibers, which are bundled together and inserted into the uterine cavity by means of a uterine cannula. The cannula is positioned within the uterine cavity at a preferred location and then withdrawn thereby allowing the plurality of optic fibers to splay or diverge one from the other within the cavity. Different portions of the distal tip of the optic fiber is provided with a light diffusing tip, the remainder being provided with a nondiffusing tip portion. The fiber optic shape, as well as the segment which is permitted to actively diffuse light through the tip, is selected in order to provide a more uniform exposure intensity of the photo energy or at least sufficient radiation directed to each segment of the uterine walls. 5 figs.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
170467
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 550600; PA: EDB-96:030492; SN: 96001517603
Patent Number(s):
US 5,478,339/A/
Application Number:
PAN: 8-297,752; CNN: Grant CA-32248;Contract N00014-91-C-0134
Contract Number:
FG03-91ER61227
Resource Relation:
Other Information: PBD: 26 Dec 1995
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
55 BIOLOGY AND MEDICINE, BASIC STUDIES; UROGENITAL SYSTEM DISEASES; THERAPY; LASERS; DESIGN; UTERUS; FIBER OPTICS; LASER RADIATION