IP Library Granted Patent US 12,491,381
Granted Patent B2
US 12,491,381 · App. 18/318,456 · Granted Dec 9, 2025

Scalable slim radiotherapy treatment delivery system topology

Inventors: Eric Schnarr (McFarland, WI); Mark Trail (Sunnyvale, CA); Calvin Maurer, Jr. (San Jose, CA)
Assignee: Accuray LLC
A61N5/1081A61N5/10A61N5/103A61N5/1039A61N5/1042A61N5/1048A61N5/1049A61N5/1077A61N5/1078A61N5/1082G21K5/04A61N2005/1052A61N2005/1054A61N2005/1055A61N2005/1061A61N2005/1074A61N2005/1094
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Quick Facts
Patent No.
US 12,491,381
App. No.
18/318,456
Granted
Dec 9, 2025
Kind
B2
Abstract

A radiation delivery system that includes a gantry to extend along one or more axes. The gantry is to provide a continuous rotation. The radiation delivery system includes a linear accelerator (LINAC) coupled to the gantry. The LINAC is to generate a treatment beam. The radiation delivery system includes a rotary joint coupled to the gantry. The rotary joint provides a physical connection from the LINAC to an external system that is positioned off the gantry. The physical connection is to transport at least one of a cooling liquid or air.

Claims (33)

1 . A radiation delivery system, comprising:

a gantry to extend along one or more axes, wherein the gantry is to provide a continuous rotation;

a linear accelerator (LINAC) coupled to the gantry, wherein the LINAC is to generate a treatment beam;

an external system, comprising a processor, that is positioned off the gantry; and

a rotary joint coupled to the gantry, wherein the rotary joint provides a physical connection from the LINAC to the external system,

wherein the physical connection is to transport at least one of a cooling liquid or air, and

wherein the external system to create timing instructions for the LINAC, and to provide the timing instructions to the LINAC via the rotary joint.

2 . The radiation delivery system of claim 1 , wherein the gantry comprises a ring gantry or a C-arm gantry.

3 . The radiation delivery system of claim 1 , further comprising:

a computed tomography (CT) system to perform one or more CT scans.

4 . The radiation delivery system of claim 1 , wherein the continuous rotation is to travel multiple rotations.

5 . The radiation delivery system of claim 1 , wherein the external system provides electromagnetic waves to the LINAC via the rotary joint.

6 . The radiation delivery system of claim 5 , wherein the external system comprises a klystron.

7 . The radiation delivery system of claim 6 , wherein the external system to adjust high-voltage pulses that drive the klystron to produce adjusted electromagnetic waves for the LINAC, and to provide the adjusted electromagnetic waves to the LINAC via the rotary joint.

8 . The radiation delivery system of claim 5 , wherein the external system comprises a magnetron.

9 . The radiation delivery system of claim 8 , wherein the external system to

adjust high-voltage pulses that drive the magnetron to produce adjusted electromagnetic

waves for the LINAC, and to provide the adjusted electromagnetic waves to the LINAC via the rotary joint.

10 . The radiation delivery system of claim 1 , wherein the external system to protect components from a signal reflection of a signal that is transmitted via the rotary joint.

11 . The radiation delivery system of claim 1 , wherein the external system to provide a fluid at a determined temperature to the gantry via the rotary joint.

12 . The radiation delivery system of claim 1 , wherein the external system to supply energy to the gantry via the rotary joint.

13 . The radiation delivery system of claim 1 , wherein the external system to supply air to the gantry via the rotary joint.

14 . A method, comprising:

providing, by a physical connection of a radiation delivery system, at least one of a cooling liquid or air from an external system that is positioned off a gantry to a linear accelerator (LINAC) that is positioned on the gantry,

wherein a rotary joint is coupled to the gantry,

wherein the rotary joint provides the physical connection from the LINAC to the external system, and

wherein the external system to create timing instructions for the LINAC, and to provide the timing instructions to the LINAC via the rotary joint;

performing, by the gantry, a continuous rotation of the LINAC about an axis; and

generating, by the LINAC, a treatment beam during the continuous rotation.

15 . The method of claim 14 , wherein the gantry comprises a ring gantry or a C-arm gantry.

16 . The method of claim 14 , wherein the radiation delivery system delivers a non-coplanar treatment beam by pivoting the LINAC out of a plane of rotation of the gantry.

17 . The method of claim 14 , wherein the continuous rotation is to travel multiple rotations.

18 . The method of claim 14 , wherein the cooling liquid comprises water.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 7, 2025
From: SCHNARR, ERIC; TRAIL, MARK; MAURER, CALVIN, JR.
To: ACCURAY INCORPORATED
Reel/Frame 072494/0206 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 7, 2025
From: ACCURAY INCORPORATED
To: ACCURAY LLC
Reel/Frame 072494/0695 →