Patents by Inventor Klaus Schewiola
Klaus Schewiola has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10217539Abstract: The invention relates to a contour collimator for radiotherapy, comprising a plurality of plate-shaped diaphragm elements provided in a guiding block and movably arranged with respect to one another to form a contour diaphragm for a radiation beam emitted by a radiation source towards the collimator, and at least one drive for moving the diaphragm elements, wherein a drive of its own is associated with each diaphragm element, the drives of a group of diaphragm elements are arranged substantially adjacent to one another, and the drive is a linear motor, wherein each linear motor comprises a linearly movable rod directly fixed to the associated diaphragm element. The invention facilitates a design of a contour collimator with a shape being as compact as possible, and wherein both precise and stable adjustability of the diaphragm elements is achieved without a backlash. In this way improvements to contour collimators are provided.Type: GrantFiled: December 28, 2017Date of Patent: February 26, 2019Assignee: Deutsches KrebsforschungszentrumInventors: Klaus Schewiola, Steffen Seeber
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Publication number: 20180211740Abstract: The invention relates to a contour collimator for radiotherapy, comprising a plurality of plate-shaped diaphragm elements provided in a guiding block and movably arranged with respect to one another to form a contour diaphragm for a radiation beam emitted by a radiation source towards the collimator, and at least one drive for moving the diaphragm elements, wherein a drive of its own is associated with each diaphragm element, the drives of a group of diaphragm elements are arranged substantially adjacent to one another, and the drive is a linear motor, wherein each linear motor comprises a linearly movable rod directly fixed to the associated diaphragm element. The invention facilitates a design of a contour collimator with a shape being as compact as possible, and wherein both precise and stable adjustability of the diaphragm elements is achieved without a backlash. In this way improvements to contour collimators are provided.Type: ApplicationFiled: December 28, 2017Publication date: July 26, 2018Applicant: Deutsches KrebsforschungszentrumInventors: Klaus Schewiola, Steffen Seeber
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Patent number: 9905323Abstract: The invention relates to a contour collimator for radiotherapy, comprising a plurality of plate-shaped diaphragm elements provided in a guiding block and movably arranged with respect to one another to form a contour diaphragm for a radiation beam emitted by a radiation source towards the collimator, and at least one drive for moving the diaphragm elements, wherein a drive of its own is associated with each diaphragm element, the drives of a group of diaphragm elements are arranged substantially adjacent to one another, and the drive is a linear motor, wherein each linear motor comprises a linearly movable rod directly fixed to the associated diaphragm element. The invention facilitates a design of a contour collimator with a shape being as compact as possible, and wherein both precise and stable adjustability of the diaphragm elements is achieved without a backlash. In this way improvements to contour collimators are provided.Type: GrantFiled: March 18, 2014Date of Patent: February 27, 2018Assignee: DEUTSCHES KREBSFORSCHUNGSZENTRUMInventors: Klaus Schewiola, Steffen Seeber
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Publication number: 20160071623Abstract: The invention relates to a contour collimator for radiotherapy, comprising a plurality of plate-shaped diaphragm elements provided in a guiding block and movably arranged with respect to one another to form a contour diaphragm for a radiation beam emitted by a radiation source towards the collimator, and at least one drive for moving the diaphragm elements, wherein a drive of its own is associated with each diaphragm element, the drives of a group of diaphragm elements are arranged substantially adjacent to one another, and the drive is a linear motor, wherein each linear motor comprises a linearly movable rod directly fixed to the associated diaphragm element. The invention facilitates a design of a contour collimator with a shape being as compact as possible, and wherein both precise and stable adjustability of the diaphragm elements is achieved without a backlash. In this way improvements to contour collimators are provided.Type: ApplicationFiled: March 18, 2014Publication date: March 10, 2016Applicant: DEUTSCHES KREBSFORSCHUNGSZENTRUMInventors: Klaus SCHEWIOLA, Steffen SEEBER
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Patent number: 9031204Abstract: A leaf module for a multi-leaf collimator comprises a leaf unit and a leaf drive unit. The leaf unit comprises a leaf for shielding beams from a selected area. The leaf unit is mounted displaceably in an adjusting direction with relation to the leaf drive unit. The leaf drive unit is designed to displace the leaf unit linearly in the adjusting direction. The leaf drive unit comprises at least one drive mechanism which operates based on piezoelectric actuation, being designed such that the leaf drive unit thoroughly encloses the leaf unit within a plane being oriented substantially perpendicularly related to the adjusting direction. The multi-leaf collimator can comprise a plurality of leaf modules while being shaped as compact as possible. Both precise and stable adjustability of the leaf unit is achieved with the leaf module.Type: GrantFiled: May 15, 2012Date of Patent: May 12, 2015Assignee: Deutsches KrebsforschungszentrumInventors: Gernot Echner, Steffen Seeber, Klaus Schewiola
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Publication number: 20140288349Abstract: A therapeutic device (110) and a method for treating a predefined body part (112) of a patient with rays (116) are disclosed. The therapeutic device (110) has at least one ray source (118) for generating the rays (116). The therapeutic device (110) further has at least one collimator (120) for collimating and shaping the rays (116). The therapeutic device (110) further has at least one ray positioning system (122) for adjusting the position and direction of irradiating the rays (116) onto the patient. The therapeutic device (110) further has at least one patient positioning system (124) for positioning and orienting the patient. The therapeutic device (110) further comprises a control device (126). The control device (126) controls at least the collimator (120), the ray positioning system (122) and the patient positioning system (124). The control device (126) is a real-time system (128).Type: ApplicationFiled: July 27, 2012Publication date: September 25, 2014Applicant: Deutsches KrebsforschungszentrumInventors: Steffen Seeber, Klaus Schewiola
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Publication number: 20140217312Abstract: A leaf module for a multi-leaf collimator comprises a leaf unit and a leaf drive unit. The leaf unit comprises a leaf for shielding beams from a selected area. The leaf unit is mounted displaceably in an adjusting direction with relation to the leaf drive unit. The leaf drive unit is designed to displace the leaf unit linearly in the adjusting direction. The leaf drive unit comprises at least one drive mechanism which operates based on piezoelectric actuation, being designed such that the leaf drive unit thoroughly encloses the leaf unit within a plane being oriented substantially perpendicularly related to the adjusting direction. The multi-leaf collimator can comprise a plurality of leaf modules while being shaped as compact as possible. Both precise and stable adjustability of the leaf unit is achieved with the leaf module.Type: ApplicationFiled: May 15, 2012Publication date: August 7, 2014Inventors: Gernot Echner, Steffen Seeber, Klaus Schewiola
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Publication number: 20140010355Abstract: A multi-leaf collimator for radiation therapy in which the position of the leaves are determined by measuring a magnetic field allows to determine the leaf position with enhanced precision, and is at the same time robust to perturbations or disturbances. The magnetic sensor may comprise a magnetic encoder that varies in a predefined pattern along a lengthwise direction of the magnetic element, in particular according to a step function.Type: ApplicationFiled: March 9, 2012Publication date: January 9, 2014Applicant: Deutsches Krebsforschungszentrum Stiftung des oeffentichen RechtsInventors: Steffen Seeber, Klaus Schewiola