X-ray or gamma ray systems or devices – Source support – Including movable source
Patent
1998-09-21
2000-11-07
Porta, David P.
X-ray or gamma ray systems or devices
Source support
Including movable source
378197, H05G 102
Patent
active
061426679
ABSTRACT:
An X-ray positioning apparatus for a C-arm device that is "out of balance" in that a center of mass of the rotatable structure resides below an axis of lateral rotation of the C-arm. The positioning apparatus includes a conventional L-arm support for holding the C-arm thereon, wherein a torsional resistance device is disposed inside the L-arm. The torsional resistance device may be a gas spring, for example, pivotally attached at one end to a fixed location on a ground support such as a conventional base unit, and attached at an opposing end to the L-arm by a ball joint. The pivotal attachment of the gas spring resides below the axis of lateral rotation to thereby cause the gas spring to produce a torsional force about the axis of lateral rotation that is opposite in direction to torsional loads produced by force of gravity when the center of mass of the rotatable structure and the axis of lateral rotation are not in vertical alignment.
REFERENCES:
patent: Re34943 (1995-05-01), Van Endschot et al.
patent: 3281598 (1966-10-01), Hollstein
patent: 4209706 (1980-06-01), Nunan
patent: 4447721 (1984-05-01), Wang
patent: 4716581 (1987-12-01), Barud
patent: 4768216 (1988-08-01), Harvey et al.
patent: 4797907 (1989-01-01), Anderton
patent: 4955046 (1990-09-01), Siczek et al.
patent: 4961214 (1990-10-01), Van Endschot et al.
patent: 4964150 (1990-10-01), Van Der AA et al.
patent: 5014293 (1991-05-01), Boyd et al.
patent: 5050197 (1991-09-01), Virta et al.
patent: 5050204 (1991-09-01), Siczek et al.
patent: 5226069 (1993-07-01), Narita
patent: 5283808 (1994-02-01), Cramer et al.
patent: 5388141 (1995-02-01), Hove
patent: 5426683 (1995-06-01), O'Farrell, Jr. et al.
patent: 5475730 (1995-12-01), Galando
patent: 5506882 (1996-04-01), O'Farrell, Jr. et al.
patent: 5544217 (1996-08-01), Kadowaki et al.
patent: 5583909 (1996-12-01), Hanover
patent: 5617462 (1997-04-01), Spratt
patent: 5627873 (1997-05-01), Hanover et al.
patent: 5642395 (1997-06-01), Anderton et al.
International ISS Surgical Systems, Inc., ISS-2000 Plus Multispecialty Surgical Imaging System Brochure, pp. 1-25, 1991, Phoenix, Arizona.
OEC Medical Systems, Inc.
Porta David P.
LandOfFree
Gas-spring assisted, counter-balanced L-arm assembly for fluoros does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gas-spring assisted, counter-balanced L-arm assembly for fluoros, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas-spring assisted, counter-balanced L-arm assembly for fluoros will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1634732