Patent ID: 11931603
Assignee: ELEKTA LIMITED
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 19:
20. A radiotherapy apparatus comprising:
a rotatable gantry;
a beam generation system, attached to the gantry, configured to generate a beam of therapeutic radiation;
an on-gantry heat transfer system configured to rotate with the gantry, the on-gantry heat transfer system including:
a first conduit comprising a first thermally conductive surface, wherein the on-gantry heat transfer system is further configured to transfer heat generated by the beam generation system to the first thermally conductive surface; and
a pump to pump fluid around the on-gantry heat transfer system and through the first conduit;
an off-gantry heat transfer system including a second thermally conductive surface, wherein the off-gantry heat transfer system is configured to transfer heat away from the second thermally conductive surface; and
a biasing mechanism to bias one of the first thermally conductive surface or the second thermally conductive surface toward the other of the first thermally conductive surface or the second thermally conductive surface;
wherein the first thermally conductive surface is configured to rotate with respect to the second thermally conductive surface, wherein at least one of the first thermally conductive surface or the second thermally conductive surface is substantially annular, wherein the off-gantry heat transfer system comprises a second conduit, wherein the second conduit includes the second thermally conductive surface, wherein the first conduit is a rotor ring and the second conduit is a stator ring, wherein the rotor ring is configured to rotate with respect to the stator ring as the gantry rotates, wherein the first thermally conductive surface is in thermal contact with the second thermally conductive surface to form an interface between the on-gantry heat transfer system and the off-gantry heat transfer system, the interface comprising at least one of direct physical contact of at least a portion of the first thermally conductive surface with at least a portion of the second thermally conductive surface, or a gas bearing located between the first thermally conductive surface and the second thermally conductive surface.