| US 7,543,986 B2 | ||
| Equilibrated C-arm x-ray device | ||
| Edmund Saffer, Eggolsheim (Germany) | ||
| Assigned to Siemens Aktiengesellschaft, Munich (Germany) | ||
| Appl. No. 10/592,198 PCT Filed Feb. 17, 2005, PCT No. PCT/EP2005/050713 § 371(c)(1), (2), (4) Date Jul. 09, 2007, PCT Pub. No. WO2005/084549, PCT Pub. Date Sep. 15, 2005. |
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| Claims priority of application No. 10 2004 011 460 (DE), filed on Mar. 09, 2004. | ||
| Prior Publication US 2007/0280426 A1, Dec. 06, 2007 | ||
| Int. Cl. H05G 1/02 (2006.01) | ||
| U.S. Cl. 378—197 [378/196; 378/198] | 8 Claims |
| 1. An x-ray C-arm apparatus comprising:
a C-arm exhibiting a C-arm plane;
a plurality of components mounted on said C-arm, including an x-ray source and a radiation detector;
a C-arm mount to which said C-arm is mounted for rotation around an orbital axis, said C-arm and said plurality of components
mounted thereon having an overall center of gravity, and said plurality of components mounted on said C-arm, in combination
exerting a first torque on said C-arm totaling all respective torques produced by said plurality of components; and
a compensation device located on said C-arm entirely between said x-ray source and said radiation detector, said compensation
device comprising a counterweight mounted on a rotatable arm that spaces said counterweight from said C-arm, and a gear arrangement
that interacts with said C-arm upon rotation of said C-arm to rotate said rotatable arm and said counterweight, dependent
on rotation of said C-arm to produce a second torque that at least partially compensates said first torque.
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