Delwin Kent Mccarthy

US Patent:

20030108078, Jun 12, 2003

Filed:

Dec 11, 2001

Appl. No.:

10/020846

Inventors:

Delwin McCarthy - Cerritos CA, US
Robert Gregg - Cerritos CA, US
Rick Thompson - Fairfield CA, US
Michael Yessik - Richmond CA, US

International Classification:

H01S003/10
H01S003/00
H01S003/09

US Classification:

372/069000, 372/025000

Abstract:

A laser pulse driving method comprises the steps of selecting a desired laser pulse energy level and a laser pulse width, and then determining a target flashlamp current level corresponding to the laser pulse energy level and the laser pulse width. Further, the method teaches generating a reference voltage corresponding to the target flashlamp current level at a first input of a comparator, closing a power switch to deliver an actual flashlamp current level to the flashlamp from a pulse capacitor, and then presenting a shunt voltage proportional to the actual flashlamp current level at a second input of the comparator. Further steps include, turning-on a comparator output when the shunt voltage is less than the reference voltage, receiving the comparator output at a first AND gate input, receiving a control signal at a second AND gate input for a time equal to the laser pulse width and then applying the AND gate output at a power switch driver when both the first and the second AND gate inputs are present. A power switch delivers the actual flashlamp current level from the pulse capacitor when the AND gate output is present whereby the laser pulse energy level is applied to the flashlamp in a laser pulse having the desired laser pulse energy level and laser pulse width.

US Patent:

56429975, Jul 1, 1997

Filed:

Feb 1, 1996

Appl. No.:

8/595310

Inventors:

Robert H. Gregg - Cerritos CA
Delwin K. McCarthy - Hemet CA

International Classification:

A61C 300

US Classification:

433215

Abstract:

A method for removing deep gingival pockets provides for excise of disease while providing for reconnection of the tissue-tooth connection. Steps in the process include creating a gingival trough in the pocket with a contact laser fiber, excising the pocket epithelium while selectively removing sulcular and pocket epithelium and granulation tissue fully around the targeted tooth to the full depth without breaking through the mucogingival junction, scaling the root surfaces to the full depth ultrasonically, lasing the pocket to remove granulation tissue and to disinfect the tissue, assist in hemostatis, cauterize free nerve endings, seal lymphatics, prepare the tissue for welding and desensitize the tooth, and compressing the tissue against the tooth until adhesion is achieved.