Patents by Inventor Christian Rathjen

Christian Rathjen 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).

  • Publication number: 20250248849
    Abstract: The present disclosure relates to an ophthalmological device for surgical treatment of a cornea of an eye, the ophthalmological device comprising a laser source, a focusing optics, a scanner system and an electronic circuit. The electronic circuit is configured to control a first scanner device of the scanner system to move the focal spot with a first scanning speed along a line, thereby forming a scan line, to control a second scanner device of the scanner system to move the scan line with a second scanning speed along a predetermined processing path, which extends inside the cornea, for treating the cornea, and to control the ophthalmological device to vary at least one of: a geometrical parameter of the scan line or a physical parameter of the scan line, along the predetermined processing path.
    Type: Application
    Filed: December 18, 2024
    Publication date: August 7, 2025
    Inventors: Christian Rathjen, Michael Steinlechner
  • Patent number: 12357508
    Abstract: An ophthalmic device for treating an eye includes a laser source, a scanner system and an application head with a focusing optic and a patient interface for docking the application head onto the eye. Moreover, the ophthalmic device includes a measurement system for optically capturing eye structures when the application head is docked to the eye and a circuit which is configured to determine reference structures of the eye, which are arranged in ring-shaped fashion about the center axis of the anterior chamber of the eye, from the captured eye structures and to arrange a defined three-dimensional treatment model with respect to these reference structures in order to process a three-dimensional treatment pattern in accordance with the arranged three-dimensional treatment model in the eye.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: July 15, 2025
    Assignee: Ziemer Ophthalmic Systems AG
    Inventor: Christian Rathjen
  • Publication number: 20250205085
    Abstract: The present disclosure relates to an ophthalmological system for ablative removal of eye colorant arranged in a cornea of an eye of a patient, the ophthalmological system. The ophthalmological system comprises a position measurement system configured to determine an area in the cornea comprising the eye colorant, a laser source configured to generate a pulsed laser beam, a focusing optics configured to make the pulsed laser beam converge onto a focal spot in the cornea, a scanner system configured to deflect the pulsed laser beam, and an electronic circuit configured to control the scanner system to direct the focal spot to process the determined area comprising the eye colorant in the cornea for ablative removal of the eye colorant.
    Type: Application
    Filed: December 18, 2024
    Publication date: June 26, 2025
    Inventors: Christian Rathjen, Michael Steinlechner
  • Patent number: 12274644
    Abstract: An ophthalmic device for treating an eye includes a laser source, a scanner system and an application head with a focusing optic and a patient interface for docking the application head onto the eye. Moreover, the ophthalmic device includes a measurement system for optically capturing eye structures when the application head is docked to the eye and a circuit which is configured to determine reference structures of the eye, which are arranged in ring-shaped fashion about the center axis of the anterior chamber of the eye, from the captured eye structures and to arrange a defined three-dimensional treatment model with respect to these reference structures in order to process a three-dimensional treatment pattern in accordance with the arranged three-dimensional treatment model in the eye.
    Type: Grant
    Filed: December 11, 2023
    Date of Patent: April 15, 2025
    Assignee: Ziemer Ophthalmic Systems AG
    Inventor: Christian Rathjen
  • Patent number: 12263124
    Abstract: An ophthalmological device for intracapsular fragmentation of a lens nucleus of an eye comprises a laser source, a focusing optical module, and a scanner system for moving a focus to target locations in the lens nucleus. For the fragmentation of the lens nucleus, an electronic circuit controls the scanner system to move the focus to intracapsular target locations on cutting planes which extend from a posterior surface to an anterior surface of the lens nucleus. The cutting planes form a maximum of two intracapsular intersecting lines on any of the cutting planes. Two of the cutting planes are arranged at a mutual distance larger than a diameter of a phaco handpiece tip and divide the lens nucleus into three fragments.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: April 1, 2025
    Assignee: Ziemer Ophthalmic Systems AG
    Inventors: Richard Thorlakson, Thomas Asshauer, Christian Rathjen
  • Patent number: 12239577
    Abstract: An ophthalmological device for treatment of a cornea comprises a laser source, a focusing optical module, a scanner system, and an electronic circuit. The electronic circuit is configured to control the scanner system to move the focal spot of the pulsed laser beam to generate a void volume inside the cornea by ablating cornea tissue with partially overlapping focal spots, whereby two or more focal spots partially overlap in direction of each of three dimensions of the void volume, and to move the focal spot inside the cornea to cut in the cornea a venting channel which connects fluidically the void volume to an escape area and enables venting of gas from the void volume through the venting channel to the escape area.
    Type: Grant
    Filed: December 22, 2021
    Date of Patent: March 4, 2025
    Assignee: Ziemer Ophthalmic Systems AG
    Inventors: Michael Steinlechner, Christian Rathjen, Werner Bernau
  • Publication number: 20250025340
    Abstract: An ophthalmological device comprises a laser source, an application head having focusing optics and a patient interface, a scanner system and circuit. The circuit is configured to control the scanner system to incise an incision surface, which is symmetrical with respect to the central axis of the patient interface, in the eye tissue, a pulsed laser beam being directed onto treatment points on the incision surface on a first treatment path, and the treatment path being curved while extending around the projection axis of the focusing optics. In the event of a tilt of the eye with respect to the central axis of the patient interface, the circuit determines an apex or nadir of a tilted incision surface by a co-tilt of the incision surface corresponding to the tilt of the eye, and determines a transformed treatment path, which extends around the apex or nadir and determines treatment points on the tilted incision surface.
    Type: Application
    Filed: October 3, 2024
    Publication date: January 23, 2025
    Inventors: Christian Rathjen, Michael Steinlechner
  • Publication number: 20240389849
    Abstract: Disclosed is an ophthalmic imaging device comprising an on-axis measuring unit and an off-axis iris imaging unit, the off-axis iris imaging unit arranged at a predetermined angle to a measurement axis of the ophthalmic imaging device and comprising a sensor defining an image plane, and an optical system oriented relative to the image plane such that a focal plane of the off-axis iris imaging unit substantially coincides with an iris plane of the iris of the eye.
    Type: Application
    Filed: May 21, 2024
    Publication date: November 28, 2024
    Inventors: Christian Rathjen, Michael Steinlechner
  • Publication number: 20240257156
    Abstract: A computerized system for determining the authenticity of a diamond comprises a computerized certification system and a computerized authentication system. The computerized certification system is configured to certify a diamond by generating diamond reference characteristics, using one or more physical characteristics of the diamond measured during a certification phase, and writing a visual code in or on the diamond, using a beam writing system. The computerized authentication system is configured to authenticate the diamond by generating diamond verification measurements, using one or more physical characteristics of the diamond, measured during an authentication phase, capturing the visual code of the diamond, and comparing the diamond verification measurements and the diamond reference characteristics, using the visual code captured from the diamond.
    Type: Application
    Filed: January 23, 2024
    Publication date: August 1, 2024
    Inventors: Frank Ziemer, Robert Chodelka, Christian Rathjen, Michael Steinlechner
  • Patent number: 12036151
    Abstract: For the purposes of working on eye tissue, an ophthalmological apparatus comprises a laser source that is configured to produce a pulsed laser beam, a focusing optical unit that is configured to focus the pulsed laser beam into the eye tissue, and a scanner system for deflecting the pulsed laser beam onto work target points in the eye tissue. The scanner system is configured to guide the pulsed laser beam onto work target points along a scan line that extends across a work line at an alignment angle and to tilt the scan line depending on the work target point on the work line in such a way that the scan line extends substantially along an outer face of a lenticule to be cut in the eye tissue.
    Type: Grant
    Filed: March 28, 2023
    Date of Patent: July 16, 2024
    Assignee: Ziemer Ophthalmic Systems AG
    Inventor: Christian Rathjen
  • Publication number: 20240225896
    Abstract: An ophthalmological laser device for treatment of eye tissue is disclosed, comprising a base station having a treatment laser source configured to generate a treatment laser beam, an application head, an arm arranged between the base station and the application head, wherein the arm is configured to provide a beam path for the treatment laser beam, the arm having at least one joint, and a scanner arranged in the joint and configured to dynamically deflect the treatment laser beam about two axes, wherein the treatment laser beam upstream of the scanner is collinear with an axis of rotation of the joint and an orientation of the scanner is dependent on a movement of the joint.
    Type: Application
    Filed: August 28, 2023
    Publication date: July 11, 2024
    Inventors: Christian Rathjen, Michael Steinlechner
  • Publication number: 20240206726
    Abstract: A computer-implemented method and device for characterizing an optical inhomogeneity in a human eye is disclosed, the method comprising: receiving optical coherence tomography data of the eye; receiving image data of an image of the eye recorded by a camera, the image recorded using one or more of the following imaging techniques: direct illumination of the eye, retro-illumination of the eye, or Scheimpflug imaging; and characterizing the optical inhomogeneity as one or more of the following optical inhomogeneity types: a cataract, a floater, or an opacification of the cornea using the optical coherence tomography data and the image data.
    Type: Application
    Filed: December 19, 2023
    Publication date: June 27, 2024
    Inventors: Thomas Asshauer, Christian Rathjen, Franziska Rothen, Michael Steinlechner
  • Publication number: 20240189150
    Abstract: An ophthalmological apparatus comprises a laser source for producing a pulsed laser beam, a scanner system for deflecting the pulsed laser beam at a treatment speed in the eye tissue along a scanning treatment line, a first scanning apparatus connected upstream of the scanner system for deflecting the pulsed laser beam and for producing a first scanning movement component superposed on the scanning treatment line in a first scanning direction at a first scanning speed that is higher as compared to the treatment speed, and a second scanning apparatus connected upstream of the scanner system for deflecting the pulsed laser beam and for producing a second scanning movement component, which is superposed on the first scanning movement component in a second scanning direction, which is at an angle to the first scanning direction, at a second scanning speed that is higher as compared to the first scanning speed.
    Type: Application
    Filed: February 26, 2024
    Publication date: June 13, 2024
    Inventor: Christian Rathjen
  • Publication number: 20240173170
    Abstract: The present disclosure relates to an ophthalmological patient interface for application to an eye of a patient and to a method of manufacturing the ophthalmological patient interface, the ophthalmological patient interface comprising a coupling portion, an eye fixation portion and a passage, extending through the coupling portion and the eye fixation portion, wherein the passage is configured to enable a treatment laser beam from a laser applicator to pass through the ophthalmological patient interface, wherein at least one of: the coupling portion or the eye fixation portion comprises a patient-specific portion, shaped individually with respect to at least one of: a surface shape of the eye of the patient or a surface shape of a surrounding of the eye of the patient.
    Type: Application
    Filed: November 22, 2023
    Publication date: May 30, 2024
    Inventors: Nikolaus Kaiser, Christian Rathjen, Michael Steinlechner
  • Patent number: 11992438
    Abstract: An ophthalmic device (1) for treating eye tissue (6) using laser pulses comprises a projection optical unit (12) for focussed projection of the laser pulses and a scanning device (2), with a movable mirror (20), arranged downstream from the projection optical unit (12), for deflecting the laser pulses projected by the projection optical unit (12) in at least one deflection direction. The ophthalmic device (1) moreover comprises a drive system (200) configured to displace the mirror (20) in parallel. The parallel displacement of the mirror (20) renders it possible to displace the focus of deflected laser pulses in the projection direction and therefore correct image field curvatures caused by the scanning device (2) arranged downstream from the projection optical unit (12) and, for example, image the deflected laser pulses in focus onto a plane.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: May 28, 2024
    Inventor: Christian Rathjen
  • Publication number: 20240130893
    Abstract: An ophthalmological laser device for treatment of eye tissue is disclosed, comprising a base station having a treatment laser source configured to generate a treatment laser beam, an application head, an arm arranged between the base station and the application head, wherein the arm is configured to provide a beam path for the treatment laser beam, the arm having at least one joint, and a scanner arranged in the joint and configured to dynamically deflect the treatment laser beam about two axes, wherein the treatment laser beam upstream of the scanner is collinear with an axis of rotation of the joint and an orientation of the scanner is dependent on a movement of the joint.
    Type: Application
    Filed: August 27, 2023
    Publication date: April 25, 2024
    Inventors: Christian Rathjen, Michael Steinlechner
  • Publication number: 20240108509
    Abstract: The present disclosure relates to an ophthalmological patient interface for application to an eye of a person, the ophthalmological patient interface comprising a coupling portion configured to be arranged on an application head of an ophthalmological laser treatment system, wherein the ophthalmological patient interface further comprises an eye fixation portion configured to be arranged on the eye, wherein the eye fixation portion comprises a cornea contacting element, configured to contact at least partially the cornea of the eye, and a sclera contacting element, configured to contact at least partially the sclera of the eye, wherein the cornea contacting element and the sclera contacting element define a rotationally asymmetric contact surface configured to contact the eye.
    Type: Application
    Filed: October 2, 2023
    Publication date: April 4, 2024
    Inventors: Werner Bernau, Fabian Müller, Christian Rathjen, Michael Steinlechner, Thomas Studer
  • Publication number: 20240108510
    Abstract: The present disclosure relates to an ophthalmological laser treatment system for treatment of tissue of an eye comprising an ophthalmological laser treatment device comprising a base station having a treatment laser source configured to generate a treatment laser beam, an arm and an application head, wherein the ophthalmological laser treatment system further comprises an ophthalmological patient interface with a cornea contacting element, and a sclera contacting element, wherein the cornea contacting element and the sclera contacting element define a rotationally asymmetric contact surface configured to contact the eye, wherein the ophthalmological patient interface comprises a through opening, which is configured to enable the treatment laser beam from the application head to pass through the ophthalmological patient interface to penetrate a target volume of tissue of the eye.
    Type: Application
    Filed: October 2, 2023
    Publication date: April 4, 2024
    Inventors: Werner Bernau, Fabian Müller, Christian Rathjen, Michael Steinlechner, Thomas Studer
  • Publication number: 20240108507
    Abstract: An ophthalmic device for treating an eye includes a laser source, a scanner system and an application head with a focusing optic and a patient interface for docking the application head onto the eye. Moreover, the ophthalmic device includes a measurement system for optically capturing eye structures when the application head is docked to the eye and a circuit which is configured to determine reference structures of the eye, which are arranged in ring-shaped fashion about the center axis of the anterior chamber of the eye, from the captured eye structures and to arrange a defined three-dimensional treatment model with respect to these reference structures in order to process a three-dimensional treatment pattern in accordance with the arranged three-dimensional treatment model in the eye.
    Type: Application
    Filed: December 11, 2023
    Publication date: April 4, 2024
    Inventor: Christian Rathjen
  • Patent number: 11944576
    Abstract: An ophthalmological apparatus comprises a laser source for producing a pulsed laser beam, a scanner system for deflecting the pulsed laser beam at a treatment speed in the eye tissue along a scanning treatment line, a first scanning apparatus connected upstream of the scanner system for deflecting the pulsed laser beam and for producing a first scanning movement component superposed on the scanning treatment line in a first scanning direction at a first scanning speed that is higher as compared to the treatment speed, and a second scanning apparatus connected upstream of the scanner system for deflecting the pulsed laser beam and for producing a second scanning movement component, which is superposed on the first scanning movement component in a second scanning direction, which is at an angle to the first scanning direction, at a second scanning speed that is higher as compared to the first scanning speed.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: April 2, 2024
    Assignee: Ziemer Ophthalmic Systems AG
    Inventor: Christian Rathjen