Surgery – Body rests – supports or positioners for therapeutic purpose
Patent
1996-07-31
1998-10-20
Brown, Michael A.
Surgery
Body rests, supports or positioners for therapeutic purpose
128846, A61G 1500
Patent
active
058231927
ABSTRACT:
A patient is automatically accurately positioned relative to a fixed refece of a treatment/diagnostic device by an optical system which operates a patient positioning assembly to bring fiducials or skin markers on the patient into coincidence with impingement points of laser beams projected in a fixed pattern relative to the device. Cameras record images of the fiducials and laser impingement points from which alignment error and velocity error in pixel space are determined. The velocity error in pixel space is converted to a velocity error in room space by the inverse of an Image Jacobian. The Image Jacobian is initially derived using rough values for system parameters and is continuously updated and refined using the calculated errors in pixel space derived from the camera images and errors in room space derived from position encoders on the treatment/diagnostic device.
REFERENCES:
patent: 4912487 (1990-03-01), Porter
patent: 4935635 (1990-06-01), O'Harra
patent: 4969200 (1990-11-01), Manns
patent: 4979223 (1990-12-01), Manns
patent: 5080100 (1992-01-01), Trotel
patent: 5295483 (1994-03-01), Nowacki et al.
patent: 5389101 (1995-02-01), Heilbrun et al.
patent: 5446548 (1995-08-01), Gerig et al.
patent: 5588430 (1996-12-01), Bova et al.
Athanassiou Charalambos N.
Greenberger Joel
Kalend Andre M.
Kanade Takeo
Shimoga Karun B.
Brown Michael A.
University of Pittsburgh of the Commonwealth System of Higher Ed
Westerhoff Richard V.
LandOfFree
Apparatus for automatically positioning a patient for treatment/ does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for automatically positioning a patient for treatment/, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for automatically positioning a patient for treatment/ will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-234125