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公开(公告)号：US20230110626A1
公开(公告)日：2023-04-13
申请号：US17906179
申请日：2021-03-12
Applicant: ELEKTA LIMITED
Inventor： Martin Broad
Abstract: A leaf for a multi-leaf collimator comprises a leaf portion for delineating a beam of radiation, the leaf portion having first attenuation factor. The leaf also comprises a tail portion having a second attenuation factor, the first attenuation factor being greater than the second attenuation factor.
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公开(公告)号：US20230101881A1
公开(公告)日：2023-03-30
申请号：US17906149
申请日：2021-03-11
Applicant: ELEKTA LIMITED
Inventor： Martin Broad
Abstract: A mount for an array of leaf drive units corresponding to a single leaf bank of a multi-leaf collimator comprises a plurality of separable mounting plates. Each mounting plate comprises an array of mounting holes, and each mounting hole is arranged to receive a respective one of the leaf drive units.
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公开(公告)号：US12296193B2
公开(公告)日：2025-05-13
申请号：US17759585
申请日：2021-01-29
Applicant: Elekta Limited
Inventor： Martin Broad , Ralf Spriestersbach , Christopher Knox
IPC: A61N5/10
Abstract: A computer-implemented method for calibrating a multi-leaf collimator of a radiotherapy device. The multi-leaf collimator comprises a plurality of leaves, each leaf comprising an imaging marker, wherein the radiotherapy device includes an imaging device configured to image the leaves. The method comprises: receiving, from the imaging device, an image of the multi-leaf collimator in a calibration position, wherein in the calibration position the tips of the leaves abut an edge of a rigid calibration block, the edge having a known calibration profile; calculating for each leaf, from the calibration profile and the location of the marker in the image, a minor offset of the marker relative to a reference point; and outputting calibration values based on the calculated minor offsets, wherein at least one leaf of the multi-leaf collimator is controlled based on the calibration values.
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公开(公告)号：US12239851B2
公开(公告)日：2025-03-04
申请号：US17906179
申请日：2021-03-12
Applicant: Elekta Limited
Inventor： Martin Broad
Abstract: A leaf for a multi-leaf collimator comprises a leaf portion for delineating a beam of radiation, the leaf portion having first attenuation factor. The leaf also comprises a tail portion having a second attenuation factor, the first attenuation factor being greater than the second attenuation factor.
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公开(公告)号：US20230211180A1
公开(公告)日：2023-07-06
申请号：US18000609
申请日：2021-06-01
Applicant: Elekta Limited
Inventor： Mark Furth , Martin Broad , Antonio Cossu , Roberto Anselmi
IPC: A61N5/10
CPC classification number: A61N5/1045 , A61N5/1081 , A61N2005/1095
Abstract: Disclosed herein is a radiation head for a radiotherapy device. The radiation head comprises a source of radiation configured to emit a beam of radiation; and beam shaping device for collimating the beam of radiation. The beam shaping device comprises a multi-leaf collimator; and a diaphragm positioned between the source and the multi-leaf collimator. The diaphragm comprises a diaphragm block movable along a curved path, the diaphragm block having a flat face focused on a focus point which is offset from the source of radiation.
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Patent Agency Ranking
公开(公告)号：US20230173304A1
公开(公告)日：2023-06-08
申请号：US17906147
申请日：2021-03-11
Applicant: ELEKTA LIMITED
Inventor： Martin Broad
IPC: A61N5/10
CPC classification number: A61N5/1045 , A61N5/1048
Abstract: A multi-leaf collimator module for a radiotherapy device comprises: a leaf bank comprising a plurality of leaves. The module also comprises a leaf guide arranged to guide linear movement of the leaves in a first direction and a second direction opposite the first direction, the leaf guide being in direct contact with the leaves. The module further comprises a plurality of leaf actuators, each leaf actuator arranged to engender relative linear motion in the first direction and second direction between one leaf in the leaf bank and other leaves in the leaf bank; and a leaf bank actuator arranged to engender relative linear motion in the first direction and second direction between the entire leaf bank and the leaf guide.
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公开(公告)号：US12186589B2
公开(公告)日：2025-01-07
申请号：US17906149
申请日：2021-03-11
Applicant: Elekta Limited
Inventor： Martin Broad
Abstract: A mount for an array of leaf drive units corresponding to a single leaf bank of a multi-leaf collimator comprises a plurality of separable mounting plates. Each mounting plate comprises an array of mounting holes, and each mounting hole is arranged to receive a respective one of the leaf drive units.
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公开(公告)号：US20230113879A1
公开(公告)日：2023-04-13
申请号：US17906181
申请日：2021-03-11
Applicant: Elekta Limited
Inventor： Martin Broad
Abstract: A leaf assembly for a multi-leaf collimator comprises a leaf and a leaf nut removably mounted within the profile of the leaf, the leaf nut comprising a threaded hole for receiving a leaf actuator screw oriented along a first axis in the plane of the leaf. The leaf nut is mounted within the leaf such that relative movement between the leaf nut and the leaf is prevented both linearly along the first axis and rotationally about the first axis.
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公开(公告)号：US20230100438A1
公开(公告)日：2023-03-30
申请号：US17906153
申请日：2021-03-11
Applicant: Elekta Limited
Inventor： Martin Broad
IPC: A61N5/10
Abstract: A leaf unit assembly for a multi-leaf collimator comprises a leaf, a leaf actuator screw having a first end fixedly attached to the leaf, and a rotatable part threadably engaged with the leaf actuator screw.
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公开(公告)号：US12263355B2
公开(公告)日：2025-04-01
申请号：US17906181
申请日：2021-03-11
Applicant: Elekta Limited
Inventor： Martin Broad
Abstract: A leaf assembly for a multi-leaf collimator comprises a leaf and a leaf nut removably mounted within the profile of the leaf, the leaf nut comprising a threaded hole for receiving a leaf actuator screw oriented along a first axis in the plane of the leaf. The leaf nut is mounted within the leaf such that relative movement between the leaf nut and the leaf is prevented both linearly along the first axis and rotationally about the first axis.
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