Surgery – Instruments – Light application
Reexamination Certificate
2005-08-23
2005-08-23
Farah, A. (Department: 3739)
Surgery
Instruments
Light application
C606S010000, C606S011000, C606S015000, C606S016000, C250S336100, C250S338100, C374S100000
Reexamination Certificate
active
06932809
ABSTRACT:
Methods and systems are disclosed for detecting overheating in an optical device before harmful consequences, such as severe local heating, can result. In one embodiment of the invention, a blackbody emitter is disposed in close proximity to a therapeutic optical fiber to absorb therapeutic radiation at a fault and re-emit blackbody (infrared) radiation. The emitter can be coupled to the fiber but, during normal operation, lies outside the optical path between the output of the laser radiation and the site of treatment. Systems and catheters incorporating such emitters are also described for effective monitoring of the laser power transmitted along the optical fiber within the phototherapy device.
REFERENCES:
patent: 4311142 (1982-01-01), Machida
patent: 4385832 (1983-05-01), Doi et al.
patent: 4476512 (1984-10-01), Sunago et al.
patent: 4543477 (1985-09-01), Doi et al.
patent: 4663520 (1987-05-01), Tanaka et al.
patent: 4730885 (1988-03-01), Doi
patent: 4812641 (1989-03-01), Ortiz Jr.
patent: 4883054 (1989-11-01), Fuller et al.
patent: 4896141 (1990-01-01), Farquhar et al.
patent: 4994059 (1991-02-01), Kosa et al.
patent: 5012087 (1991-04-01), Rockstroh et al.
patent: 5057099 (1991-10-01), Rink
patent: 5064271 (1991-11-01), Kern et al.
patent: 5104391 (1992-04-01), Ingle et al.
patent: 5154707 (1992-10-01), Rink et al.
patent: 5499313 (1996-03-01), Kleinerman
patent: 5928222 (1999-07-01), Kleinerman
patent: 6514277 (2003-02-01), Lilge et al.
patent: 212786 (1987-03-01), None
Sinofsky, E. and Roth, L. “Safety Interlocking Laser Output Prior to Optical Fiber Burnback,”SPIE-Optical Fibers in Medicine and Biology, 576: 51-54 (1985).
Farr, N. and Sinofsky E. “Infrared Techniques for Detecting Carbonization at Onset of Device Failure,”SPIE Proceedings, 2970: 507-512 (1997).
U.S. Appl. No. 09/713,586, Sinofsky et al.
Sinofsky, E. “Comparative Thermal Modeling of Er:YAG, Ho:YAG and CO2Laser Pulses For Tissue Vaporization, ”SPIE-Lasers in Medicine, 712: 188-192 (1986).
CardioFocus, Inc.
Engellenner Thomas J.
Farah A.
Miller Deborah A.
Nutter & McClennen & Fish LLP
LandOfFree
Safety shut-off device for laser surgical instruments... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Safety shut-off device for laser surgical instruments..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safety shut-off device for laser surgical instruments... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3497136