Mutileaf collimator for radiotherapy machines
US4868844A · kind A · utility
301Cited by
17References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 7, 1988 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Mar 7, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1095
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a radiation therapy machine it is desirable to produce irregular radiation field shapes in order to shield critical organs not invaded by the tumor. A multileaf collimator is formed of a multiplicity of heavy metal bar leaves driven relative to frames which are driven relative to jaws of a rectangular field collimator by electric motors and flexible cables.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.