Patents by Inventor Karsten Festag

Karsten Festag 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: 20220331042
    Abstract: A slit projector for generating slit illumination in an eye, including a light source, a slit forming unit and an imaging optical unit along a beam path. The invention facilitates improved freedom to operate in the treatment field. The slit projector includes a mirror arranged between the slit forming unit and the imaging optical unit. A corresponding positioning apparatus facilitates aligning the slit illumination in the eye for a therapy system with a surgical microscope and a slit projector. The positioning apparatus includes a holding element and a fastening element, which can be connected to the surgical microscope and the slit projector, respectively, and a pivoting element including a first connection, by use of which the pivoting element and the holding element are movably connected, and a second connection, by use of which the pivoting element and the fastening element are movably connected.
    Type: Application
    Filed: September 8, 2020
    Publication date: October 20, 2022
    Applicant: Carl Zeiss Meditec AG
    Inventors: Beate BÖHME, Gerard ANTKOWIAK, Dietmar STEINMETZ, Jens KÜHNEMUND, Karsten FESTAG
  • Publication number: 20220280338
    Abstract: An ophthalmological laser therapy positioning device which facilitates accurate positioning of the laser therapy system vis-à-vis the patient's eye. The positioning device includes a first and a second recording unit, which provide recording data from different recording directions, a displacement unit that displaces the relative position of the eye vis-à-vis an optical opening of the laser therapy system on the basis of control commands, and a control unit that generates control commands on the basis of the recording data. The positioning device furthermore may include a display unit for displaying the recording data and an input unit for inputting input data, the control unit in this case generates control commands on the basis of the recording data and/or on the basis of the input data and to provide the control commands to the displacement unit. Corresponding positioning methods are also included.
    Type: Application
    Filed: September 8, 2020
    Publication date: September 8, 2022
    Applicant: Carl Zeiss Meditec AG
    Inventors: Beate BÖHME, Gregor STOBRAWA, Karsten FESTAG, Marco LEHNORT
  • Publication number: 20210330500
    Abstract: An ophthalmological laser therapy system having an appliance base and an appliance head, displaceable relative to one another by translational movement and having a laser device and to a corresponding method. A laser pivot arm is fastened to the appliance head pivotable about a horizontal first axis. The laser pivot arm is encompassed by a pivot arm housing, which is fastened in a separately pivotable manner on the appliance head in coaxial fashion relative to the laser pivot arm and/or by virtue of an examination pivot arm with an examination device, defining an examination volume, being fastened to the appliance head pivotable about a second axis, wherein both axes are arranged such that a work volume of a laser beam, when the laser pivot arm is in a work position, is a partial volume of the examination volume, when the examination pivot arm is in a work position.
    Type: Application
    Filed: July 7, 2021
    Publication date: October 28, 2021
    Inventor: Karsten FESTAG
  • Patent number: 11071649
    Abstract: An ophthalmological laser therapy system having an appliance base and an appliance head, displaceable relative to one another by translational movement and having a laser device and to a corresponding method. A laser pivot arm is fastened to the appliance head pivotable about a horizontal first axis. The laser pivot arm is encompassed by a pivot arm housing, which is fastened in a separately pivotable manner on the appliance head in coaxial fashion relative to the laser pivot arm and/or by virtue of an examination pivot arm with an examination device, defining an examination volume, being fastened to the appliance head pivotable about a second axis, wherein both axes are arranged such that a work volume of a laser beam, when the laser pivot arm is in a work position, is a partial volume of the examination volume, when the examination pivot arm is in a work position.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: July 27, 2021
    Assignee: Carl Zeiss Meditec AG
    Inventor: Karsten Festag
  • Patent number: 10925770
    Abstract: A laser treatment unit for performing eye surgery, including a contact glass which can be placed onto the eye and through which a treatment laser beam (2) passes. A safety mechanism displaceably holds the contact glass such that the contact glass retreats when the contact glass is subjected to the action of a force contrary to the direction of incidence of the laser beam. The safety mechanism enables this retreating when a force is greater than a force limit value (Fmin) and holds the contact glass in a fixed manner when the force is less than the force limit value.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: February 23, 2021
    Assignee: Carl Zeiss Meditec AG
    Inventors: Dirk Muehlhoff, Carsten Lang, Karsten Festag
  • Patent number: 10772764
    Abstract: An adapter for coupling a laser treatment device to an object for treatment. The adapter has an input side, which may be fixed relative to the laser treatment device, by a locking mechanism and which may be fixed to the object, for alignment of the object relative to the laser treatment device. A scanned laser beam is introduced on the input side, from the laser treatment device, along a beam path to the object with a reference structure. The reference structure lies on the beam path of the adapter and may be optically detected by means of the laser beam scanned over the region.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: September 15, 2020
    Assignee: Carl Zeiss Meditec AG
    Inventors: Mark Bischoff, Elke Ebert, Karsten Festag, Carsten Lang, Markus Sticker
  • Publication number: 20190060121
    Abstract: An ophthalmological laser therapy system having an appliance base and an appliance head, displaceable relative to one another by translational movement and having a laser device and to a corresponding method. A laser pivot arm is fastened to the appliance head pivotable about a horizontal first axis. The laser pivot arm is encompassed by a pivot arm housing, which is fastened in a separately pivotable manner on the appliance head in coaxial fashion relative to the laser pivot arm and/or by virtue of an examination pivot arm with an examination device, defining an examination volume, being fastened to the appliance head pivotable about a second axis, wherein both axes are arranged such that a work volume of a laser beam, when the laser pivot arm is in a work position, is a partial volume of the examination volume, when the examination pivot arm is in a work position.
    Type: Application
    Filed: March 8, 2017
    Publication date: February 28, 2019
    Applicant: Carl Zeiss Meditec AG
    Inventor: Karsten FESTAG
  • Publication number: 20180190387
    Abstract: The invention refers to a system to treat and/or diagnose a patient's eye. The system in this invention comprises several devices for the treatment and/or diagnosis of the eye as well as means for the logical linking of the devices with each other, such as systems for the spatial positioning of the devices relative to each other, configurations for the positioning of the patient and the eye to be treated relative to the respective devices, systems for the controlled supply of the devices with power and auxiliary power, and/or notification tools to transmit information or control commands between the above-mentioned devices, units, configurations and systems, and to put out information.
    Type: Application
    Filed: December 22, 2017
    Publication date: July 5, 2018
    Applicant: Carl Zeiss Meditec AG
    Inventors: Dirk Muehlhoff, Martin Wiechmann, Mark Bischoff, Karsten Festag
  • Publication number: 20170027748
    Abstract: An adapter for coupling a laser treatment device to an object for treatment. The adapter has an input side, which may be fixed relative to the laser treatment device, by a locking mechanism and which may be fixed to the object, for alignment of the object relative to the laser treatment device. A scanned laser beam is introduced on the input side, from the laser treatment device, along a beam path to the object with a reference structure. The reference structure lies on the beam path of the adapter and may be optically detected by means of the laser beam scanned over the region.
    Type: Application
    Filed: August 8, 2016
    Publication date: February 2, 2017
    Inventors: Mark BISCHOFF, Elke EBERT, Karsten FESTAG, Carsten LANG, Markus STICKER
  • Publication number: 20160338876
    Abstract: A laser treatment unit for performing eye surgery, including a contact glass which can be placed onto the eye and through which a treatment laser beam (2) passes. A safety mechanism displaceably holds the contact glass such that the contact glass retreats when the contact glass is subjected to the action of a force contrary to the direction of incidence of the laser beam. The safety mechanism enables this retreating when a force is greater than a force limit value (Fmin) and holds the contact glass in a fixed manner when the force is less than the force limit value.
    Type: Application
    Filed: May 27, 2016
    Publication date: November 24, 2016
    Inventors: Dirk MUEHLHOFF, Carsten LANG, Karsten FESTAG
  • Patent number: 9427822
    Abstract: The invention relates to an adapter for coupling a laser treatment device to an object for treatment, whereby the adapter has an input side, which may be fixed relative to the laser treatment device, by a locking mechanism and which may be fixed to the object, for alignment of the object relative to the laser treatment device. A scanned laser beam is introduced on the input side, from the laser treatment device, along a beam path to the object with a reference structure. The reference structure lies on the beam path of the adapter and may be optically detected by means of the laser beam scanned over the region.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: August 30, 2016
    Assignee: Carl Zeiss Meditec AG
    Inventors: Mark Bischoff, Elke Ebert, Karsten Festag, Carsten Lang, Markus Sticker
  • Patent number: 9351878
    Abstract: The invention relates to a laser treatment unit for performing eye surgery, comprising a contact glass (23), which can be placed onto the eye (21) and via which a treatment laser beam (2) passes. A safety mechanism (24, 25) is provided that displaceably holds the contact glass (23) in such a manner that the contact glass retreats when the contact glass (23) is subjected to the action of a force contrary to the direction of incidence of the laser beam. The safety mechanism (24, 25) enables this retreating when a force is greater than a force limit value (Fmin) and holds the contact glass (23) in a fixed manner when the force is less than the force limit value.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: May 31, 2016
    Assignee: Carl Zeiss Meditec AG
    Inventors: Dirk Muehlhoff, Carsten Lang, Karsten Festag
  • Patent number: 8944601
    Abstract: The invention relates to a contact glass for ophthalmic surgery. Said glass comprises a lens body that is held in a frame and a front lens surface that is designed to be placed against the eye. According to the invention, the front lens surface is concave and follows a surface curvature (K) and an annular gap is formed at the edge of the front lens surface between the lens body and the frame, said gap being used to apply a negative pressure in order to fix the contact glass to the eye. The frame is designed to follow the contour of an imaginary continuation of the surface curvature (K), or at least does not project beyond the latter.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: February 3, 2015
    Assignee: Carl Zeiss Meditec AG
    Inventors: Dirk Muehlhoff, Elke Ebert, Karsten Festag, Uwe Wolf, Dirk Preuss, Mark Bischoff, Gregor Stobrawa, Dietmar Steinmetz, Steffen Dubnack
  • Patent number: 8425494
    Abstract: An adapter for mechanically coupling a laser processing device to an object. The adapter has a central region which can be moved into the beam path of the laser processing device and a peripheral region located outside the central region. The beam path extends up to the object along an optical axis. The adapter is fixable to the laser processing device on the one hand and provided so as to contact the object with its central region on the other hand. A fixture is provided at the peripheral region that allows the adapter to be releasably fixed to a receiving part of the laser processing device such that, upon application of a determined pulling force along the optical axis, the The fixture is removable from the receiving part.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: April 23, 2013
    Assignee: Carl Zeiss Meditec AG
    Inventors: Dirk Mühlhoff, Elke Ebert, Karsten Festag, Uwe Wolf
  • Patent number: 7976155
    Abstract: An adapter to be applied in contact with an anterior corneal surface. The adapter includes a contact glass portion having a corneal contact surface curvature that is flatter than the undeformed anterior corneal surface. When the contact glass is applied the cornea assumes a deformed state corneal curvature that is parallel to the flatter corneal contact surface curvature. A mount portion circumferentially surrounds the contact glass portion and defines a suction duct that is structured to secure the adapter to the cornea by negative pressure when the suction duct is brought into contact with a surface of the eye surrounding the contact glass portion. The suction duct is partially defined by a peripheral edge of the mount that extends outwardly away from the mount portion and toward but not intersecting or extending beyond a geometric continuation of the corneal contact surface curvature.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: July 12, 2011
    Assignee: Carl Zeiss Meditec AG
    Inventors: Dirk Muhlhoff, Elke Ebert, Karsten Festag, Uwe Wolf
  • Patent number: 7810927
    Abstract: A solution by which an examination of the cornea for possible encapsulations, air bubbles, or other irregularities following a refractive surgery can be carried out directly at the treatment device instead of the patient having to be transferred to an examination device. The additional slit illumination system includes two slit projector units substantially symmetrically mounted at an angle of about 40° to the optical axis of the refractive treatment device, and fixed and focused on the eye of the patient to be examined. The slit projector units include a light source, a projection optical system, and beam forming and/or conducting optical components. Although intended for surgical microscopes, it can also be used for other opthalmologic treatment devices that would benefit from a slit projection system for the examination before, during, or after the treatment procedure.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: October 12, 2010
    Assignee: Carl Zeiss Meditec AG
    Inventors: Gerard Antkowiak, Marco Hanft, Elke Ebert, Karsten Festag, Juergen Ledermann
  • Publication number: 20100228236
    Abstract: An adapter contact lens to be applied in contact with an anterior corneal surface. The adapter includes a contact glass portion having a corneal contact surface curvature that is flatter than that of the undeformed anterior corneal surface. When the contact glass is applied the cornea deforms assume a deformed state corneal curvature that is parallel to the flatter corneal contact surface curvature. A mount portion circumferentially surrounds the contact glass and defines a suction duct that is structured to secure the adapter to the cornea by negative pressure when it is brought into contact with a surface of the eye surrounding the contact glass portion. The suction duct being partially defined by a peripheral edge of the mount; that extends outwardly away from the mount portion and toward but not intersecting or extending beyond a geometric continuation of the corneal contact surface curvature.
    Type: Application
    Filed: March 24, 2010
    Publication date: September 9, 2010
    Applicant: CARL ZEISS MEDITEC AG
    Inventors: Dirk MÜHLHOFF, Elke EBERT, Karsten FESTAG, Uwe WOLF
  • Patent number: 7692865
    Abstract: An adapter for coupling a laser processing device to an object, said adapter having a central region which can be moved into the beam path of the laser processing device, an illumination beam path through which illumination radiation can be guided for illumination of an object field which can be covered by the central region, and a peripheral region located outside the central region and by which the adapter can be mounted on the object and/or on the laser processing device, wherein the illumination beam path extends in the peripheral region and guides illumination radiation, coupled into the peripheral region, to the object field direct and/or via the central region.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: April 6, 2010
    Assignee: Carl Zeiss Meditec AG
    Inventors: Dirk Mühlhoff, Elke Ebert, Karsten Festag, Uwe Wolf
  • Publication number: 20080243107
    Abstract: The invention relates to a laser treatment unit for performing eye surgery, comprising a contact glass (23), which can be placed onto the eye (21) and via which a treatment laser beam (2) passes. A safety mechanism (24, 25) is provided that displaceably holds the contact glass (23) in such a manner that the contact glass retreats when the contact glass (23) is subjected to the action of a force contrary to the direction of incidence of the laser beam. The safety mechanism (24, 25) enables this retreating when a force is greater than a force limit value (Fmin) and holds the contact glass (23) in a fixed manner when the force is less than the force limit value.
    Type: Application
    Filed: January 10, 2006
    Publication date: October 2, 2008
    Inventors: Dirk Muhlhoff, Carsten Lang, Karsten Festag
  • Publication number: 20080234707
    Abstract: In a contact glass for ophthalmic surgery, which comprises a lens body (22) incorporated into a mount (37), said mount (37) having an anterior lens surface (29) designed to be placed on the eye (2), which anterior lens surface (29) is concave according to a curved surface (K), and an annular gap (44) is formed between the lens body (22) and the mount (37), via which gap a vacuum can be applied for fixing the contact glass (12) to the eye (2), it is envisaged that the mount (37) continues the curved surface (K) in an imaginary extension of the latter or at least does not protrude with respect to said curved surface.
    Type: Application
    Filed: August 25, 2006
    Publication date: September 25, 2008
    Applicant: CARL ZEISS MEDITEC AG
    Inventors: Dirk Muehlhoff, Elke Ebert, Karsten Festag, Uwe Wolf, Dirk Preuss, Mark Bischoff, Gregor Stobrawa, Dietmar Steinmetz, Steffen Dubnack