Multi-leaf collimator and radiotherapy device
US10933256B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 23, 2019 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | Sep 23, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/046
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A multi-leaf collimator includes two leaf sets disposed opposite to each other, a plurality of drive devices, a U-shaped optoelectronic switching system, and a first processor. Each leaf set includes a plurality of leaves; each leaf is configured to move under driving of the corresponding drive device; one or more U-shaped optoelectronic switches in the U-shaped optoelectronic switching system are disposed at a side of the upper end surface and/or a side of the lower end surface of a leaf; the U-shaped optoelectronic switch includes a U-shaped groove, a transmitter and a receiver; the U-shaped optoelectronic switch system generates pulse signals when the leaf is configured to move in the U-shaped groove; the first processor is configured to process pulse signals output by the U-shaped optoelectronic switch system to obtain a quantized value of the state of motion of a leaf.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.