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US 10,500,416 B2Granted
High bandwidth binary multi-leaf collimator design
AssigneeRefleXion Medical, Inc.
InventorsDavid Larkin, William Knapp, Layton Hale, David Meer
Life of this patent
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Abstract
Described herein are multi-leaf collimators that comprise leaf drive mechanisms. The leaf drive mechanisms can be used in binary multi-leaf collimators used in emission-guided radiation therapy. One variation of a multi-leaf collimator comprises a pneumatics-based leaf drive mechanism. Another variation of a multi-leaf collimator comprises a spring-based leaf drive mechanism having a spring resonator.
Claims30
A collimator comprising:
- a leaf movable between a first position and a second position;
- a leaf shaft having a proximal portion and a distal portion, and wherein the distal portion of the shaft is attached to the leaf;
- a spring system coupled to the leaf;
- and
- an actuator system coupled to the leaf shaft, wherein a motive force generated by the spring system and a motive force generated by the actuator system longitudinally translate the leaf from the first position to the second position, and wherein the actuator system is configured to selectively retain the leaf at the first position or the second position, and
- wherein the actuator system comprises a barrel comprising a longitudinal lumen, a first side opening, and a second side opening, and a piston located within the longitudinal lumen of the barrel, wherein the piston comprises the shaft and a piston seal coupled to the shaft within the barrel, and wherein movement of the piston within the barrel translates the leaf between the first position and the second position, and wherein the movement of the piston is controlled by fluid flow through the first and second side openings.
3 more elements
Dependencies are inferred from the claim text.