Surgery – Instruments – Light application
Patent
1995-08-15
1999-02-02
Shay, David M.
Surgery
Instruments
Light application
606 2, 606 13, 606 5, 351209, 607 89, A61N 506
Patent
active
058658327
ABSTRACT:
A method, apparatus and system for a transverse tracker is described that can greatly improve the accuracy, speed, range, reliability, versatility, safety, and efficacy of interventions such as laser microsurgery. The present invention provides means for stabilizing the motion of targets in a plane perpendicular to the axial direction, thus allowing an imaging system, diagnostics illumination, and/or laser beam to maintain a lock on the target area, regardless of its movement. Unique attributes provided in the tracking system include means for (1) sensing contrast in recognizable large scale boundaries such as the change between the cornea/sclera interface (limbus), thereby to determine the absolute location and orientation of these boundaries, all without having to resort to digital sampling techniques and (2) dual mode operation of an electronic control system compatible with all analog technologies, thereby substantially increasing the speed of operations over other, comparable digital method. The tracking system of the invention is at least comprised of illumination sources, imaging optics, a sensor, a movable optical element, a two-dimensional logic board, and a dedicated microprocessor, including appropriate signal processing firmware and software. Additional optics can provide interface with depth tracking, target viewing and/or laser surgery subsystems. The invention affords considerable flexibility in selecting illuminators, detectors and servo devices, which, allows broad application of this system to diverse medical surgical, diagnostic, and industrial settings.
REFERENCES:
patent: 3804496 (1974-04-01), Crane
patent: 4443075 (1984-04-01), Crane
patent: 4848340 (1989-07-01), Bille et al.
patent: 4972836 (1990-11-01), Schenck et al.
patent: 5070883 (1991-12-01), Kasahara
patent: 5098426 (1992-03-01), Sklar et al.
patent: 5162641 (1992-11-01), Fountain
patent: 5231678 (1993-07-01), Cleveland et al.
"Corneal Modeling", D.J. Gormley, M.D.; Martin Gersten, R.S. Koplen, M.D., & Virginia Lubken, M.D. Cornea, vol. 7, No. 1 (1988) pp. 30-35.
"Correlation Tracking--A New Technology Applied to Laser Photocoagulation", Albert Forster, SPIE, vol. 1423 Ophthalmic Technologies (1991), pp. 103-104.
"Variability & Development of Anormative Date Base for Saccadic Eye Movements", A. Forster, SPIE, vol. 1423, Ophthalmic Technologies (1991), pp. 116-125.
"Major Eye Movement Measurement Techniques", L.R. Young & D. Sheena, Survey of Eye Movement Recording Methods , pp. 401-429 (1975).
Bahill et al., "Variability and Development of a Narrative Data Base for Saccadic Eye Movements," Invest. Ophthalmol. Vis. Sci., vol. 21, pp. 116-125, 1981.
Gormley, "Corneal Modeling," Cornea, vol. 7, pp. 30-35, 1988.
Forster, "Correlation Tracking--A New Technology Applied to Laser Photocoagulation,"Proc. of Ophthalm. Tech., SPIE vol. 1423, pp. 103-104, 1991.
Crane and Steele, "Generation-V Dual-Purkinje-image eyetracker" Applied Optics (1985) 24(4) :527-537.
Milbocker and Feke, "Intensified charge-coupled-device-based eyetracker and image stabilizer" Applied Optics (1992) 31(19) :3719-3729.
Nguyen et al., "Slowed saccades in the Acquired Immunodeficiency Syndrome" Am. J. Ophthalmol. (1989) 107:356-360.
Hoffman Hanna J.
Knopp Carl F.
Orkiszewski Jerzy
Wysopal Jan
Shay David M.
VISX Incorporated
LandOfFree
System for detecting, measuring and compensating for lateral mov does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for detecting, measuring and compensating for lateral mov, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for detecting, measuring and compensating for lateral mov will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1112622