Kang Leung Phones & Addresses
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957 Rincon St, Mountain View, CA 94040 (650) 282-5282
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5265 Countryside Ln, San Jose, CA 95136
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3149 Ross Rd, Palo Alto, CA 94303 (650) 493-7674 (650) 494-3749 (650) 561-4456
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3630 Lupine Ave, Palo Alto, CA 94303
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Castro Valley, CA
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Fremont, CA
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Santa Clara, CA
Publications
Us Patents
Method And Apparatus For Reducing Blockage In Body Channels
View pageUS Patent:
48320234, May 23, 1989
Filed:
Jun 3, 1987
Appl. No.:
7/057791
Inventors:
Walter Y. W. Mok - Palo Alto CA
Kang M. Leung - Palo Alto CA
Kang M. Leung - Palo Alto CA
Assignee:
MCM Laboratories, Inc. - Mountain View CA
International Classification:
A61B 1736
US Classification:
1283031
Abstract:
An instrument for removing an obstruction in an internal body channel comprises an elongated catheter body adapted for insertion into a body channel having a first lumen throughout its length. An elongated guide and laser transmission conduit extends through the lumen of said catheter body and is movable therein so that its distal end can be extendable beyond the distal end of the catheter body. The proximal end of the movable conduit is connected to a controlled source of laser energy. A treatment element is provided at the distal end of the catheter body for further reducing the channel obstruction following preliminary penetration thereof by the movable laser transmission conduit. The treatment element may be a fixed laser transmission conduit which terminates at the end of the catheter body or a dilation balloon near its distal end. In method steps utilizing the instrument, the movable conduit is positioned near a channel obstruction to enlarge a passage through and then serves to guide the catheter body into position so as to further enlarge or remove the obstruction using its treatment element.