Leaf module for a multi-leaf collimator and multi-leaf collimator

US9437340B2 · kind B2 · utility

Assignees

• Deutsches Krebsforschungszentrum · DE
• Precisis GmbH · DE

Inventors

• Gernot Echner · Wiesenbach, DE
• Armin Runz · Trochtelfingen, DE
• Martin Baumann · Hartenstein, DE
• Stefan Ueltzhöffer · Schwetzingen, DE

Key dates

• Filing date: Jul 18, 2013
• Grant date: Sep 6, 2016
• Expiry date: Jul 18, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04C2270/041
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to a leaf module (102) for a multi-leaf collimator (132), comprising a leaf unit (104) and a leaf drive unit (106), wherein the leaf unit (104) comprises a leaf (108) for shielding beams from a selected area, and the leaf unit (104) is mounted displaceably in an adjusting direction (110), wherein the leaf drive unit (106) is designed to displace the leaf unit (104) linearly in the adjusting direction (110), and wherein the leaf drive unit (106) comprises at least one drive mechanism (112), being designed in such a way that the drive mechanism (112) operates based on pneumatic actuation. Furthermore, the invention relates to a multi-leaf collimator (132) comprising a plurality of leaf modules (102) according to the invention. The invention is based on the objective of designing a leaf module (102) and a multi-leaf collimator (132) as compactly as possible, while achieving a simple, reliable and variable adjustability of the leaf unit (104). The invention is regarded to be particularly suitable for implementation in Cobalt-60 or mid- to low-end linac radiotherapy apparatuses.