Nuclear medicine camera gantry system with vertically stored collimators
US5097131A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1990 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Nov 21, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/402
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An outer gantry (20) is movably mounted on wheels to move along tracks (22). An inner gantry (30) rotatably mounted on the outer gantry includes at least a pair of guide rods (56, 58) on which detector heads (32, 34) are slidably mounted. Motors (92, 102) selectively translate the detector heads along the guide rods. A chain and sprocket arrangement (116, 114; 128, 126) constrains the heads against canting and maintains opposite sides of the detector heads in alignment as the detector heads move and as the inner gantry rotates. Each detector head includes a roller bearing track or channel portion (140) on which a horizontal track portion (142) of a collimator (144) is hung vertically. A collimator connecting assembly (150) connects a bottom portion of the collimator to the detector head and secures it against further horizontal movement. A collimator cart (200) includes an analogous roller track portion (202) for supporting the collimators by the collimator guide track portion as collimators are moved between the detector head and like track portion ( 192) of a detector storage rack (190).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.