US 12,478,805 B2
Radiotherapy device comprising a tilting mechanism
Kristian Wiberg, Crawley (GB); Erik Carlander, Crawley (GB); Markus Nyman, Crawley (GB); and Henrik Alexis, Crawley (GB)
Assigned to Elekta Limited, Crawley (GB)
Filed by Elekta Limited, Crawley (GB)
Filed on Jun. 23, 2023, as Appl. No. 18/340,458.
Claims priority of application No. 2209482 (GB), filed on Jun. 28, 2022.
Prior Publication US 2023/0414971 A1, Dec. 28, 2023
Int. Cl. A61N 5/10 (2006.01)
CPC A61N 5/1082 (2013.01) [A61N 5/1049 (2013.01); A61N 2005/1055 (2013.01)] 16 Claims
OG exemplary drawing
 
15. A tilting apparatus for tilting a source of radiation in a radiotherapy device, the tilting apparatus comprising:
a plurality of guide rails comprising a first guide rail and a second guide rail;
a plurality of carriages comprising a first carriage and a second carriage, the first carriage being translatable along the first guide rail and the second carriage being translatable along the second guide rail; and
a support structure for supporting the source of radiation, wherein the support structure is rotatably coupled to each of the first carriage and the second carriage, and wherein the first guide rail and the second guide rail are obliquely angled with respect to one another such that translation of the first carriage and the second carriage along the first guide rail and the second guide rail causes tilting of the support structure.
 
16. A method of tilting a source of radiation of a radiotherapy device, the radiotherapy device comprising a source of radiation and a drive member comprising one or more linear actuators configured to translate a plurality of carriages along a plurality of guide rails respectively to cause tilting of a support structure, wherein at least two of the plurality of guide rails are oblique with respect to one another, the method comprising:
while the radiotherapy device is in a coplanar configuration, driving the one or more linear actuators to translate the carriages along the guide rails in a first direction to tilt the source of radiation into a non-coplanar configuration, and
while the radiotherapy device is in the non-coplanar configuration, driving the linear actuators to translate the carriages along the guide rails in a second, opposite direction to thereby bring the source of radiation back to the coplanar configuration.