Patents Assigned to SIE AG Surgical Instrument Engineering
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Patent number: 7621637Abstract: An ophthalmological apparatus (1) comprises a base station (11) having a light source (51) for generating light pulses, and an application head (3) which can be mounted on an eye (2) having a light projector (58) for the focussed projection of the light pulses for punctiform breakdown of eye tissue (22). The application head (3) additionally has movement drivers (57) for moving the light projector (58) in a feed direction and in a first scanning direction. A scanner (52) is arranged in the base station (11) in order to deflect the light pulses in a second scanning direction. In addition, the ophthalmological apparatus (1) comprises an optical transmission system for transmitting deflected light pulses from the base station (11) to the application head (3), and for superimposing the light pulses deflected in the second scanning direction onto the movement of the light projector (58) in the first scanning direction.Type: GrantFiled: June 9, 2006Date of Patent: November 24, 2009Assignee: SIE AG Surgical Instrument EngineeringInventors: Christian Rathjen, Wolfgang Zesch, Karl Michael Deyerler, Holger Lubatschowski, Tammo Ripken
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Publication number: 20080287927Abstract: A protective device for ophthalmic laser treatment comprises a transparent foil for protecting an eye from direct contact by a reference body disposed between a laser applicator and the eye. The protective device further comprises means for disposing the foil between the reference body and the eye, for example a carrier frame, having the foil attached thereto, and a suction ring for attachment to the eye around an operative area. The suction ring is designed for receiving the carrier frame such that the operative area is covered by the foil when the suction ring is attached to the eye. Furthermore, the suction ring is provided with coupling means for attachment to the laser applicator. When the laser is activated, laser pulses are projected from the laser applicator through the reference body and the foil to dissolved tissue of the eye. By moving the focal point of the pulsed laser beam into the foil, open cuts can be made in the eye, without damaging the reference body.Type: ApplicationFiled: April 9, 2008Publication date: November 20, 2008Applicant: SIE AG SURGICAL INSTRUMENT ENGINEERINGInventor: Christian RATHJEN
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Publication number: 20080192783Abstract: An ophthalmological device (1) comprises a controllable optical correction element (14) for the variable modulation of the wavefront of deflected femtosecond laser pulses. A control module (13) controls the correction element (14) as a function of the deflection of the femtosecond laser pulses in such a way that the femtosecond laser pulses are focused into an image area, arranged around the optical axis (z) of the light projection module (11), on a defined treatment surface. It is possible by means of the adaptive and dynamic modulation of the wavefront of the deflected laser pulses for the laser pulses to be focused onto the treatment surface in an enlarged image area in conjunction with unchanged projection optics of the light projection module (11) such that the image field is enlarged in conjunction with an unchanging compact design of a light projection module (11) suitable for manual application.Type: ApplicationFiled: July 5, 2007Publication date: August 14, 2008Applicant: SIE AG SURGICAL INSTRUMENT ENGINEERINGInventors: Christian Rathjen, Frank Ziemer
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Publication number: 20080077121Abstract: An opthalmological apparatus for the refractive correction of an eye comprises a light projector for projecting laser pulses on to a focal point in the interior of the eye in order to break down eye tissue. The apparatus further comprises a positioning module for positioning the focal point (F) at different starting points, and a scanning module for moving the focal point (F) starting from, in each case, one of the starting points in accordance with a scanning pattern for a treatment subarea (a), the scanning pattern and the starting points being defined such that in a number of treatment subareas (a) separated from one another by tissue bridges, the eye tissue is broken down.Type: ApplicationFiled: September 7, 2007Publication date: March 27, 2008Applicant: SIE AG SURGICAL INSTRUMENT ENGINEERINGInventor: Christian Rathjen
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Publication number: 20080051771Abstract: A protective film (1) for protecting a cornea against direct contact with a laser applicator has a treatment area (2) of a first film thickness and a profile region (3) that is raised with reference to the treatment area (2) and whose film thickness is configured to be greater than the first film thickness. In the state in which the protective film (1) is arranged between the cornea and applied laser applicator, the treatment area (2) positions a first part of the cornea, which part is to be treated, in a focal region of the laser applicator, and the profile region (3) positions a second part of the cornea, which part is not to be treated, outside the focal region. The raised profile region (3) presses the eye tissue region not to be treated out of the cutting plane of the laser applicator such that the focused laser pulses cannot reach this tissue region, and therefore cannot inadvertently impair and damage it.Type: ApplicationFiled: August 22, 2007Publication date: February 28, 2008Applicant: SIE AG SURGICAL INSTRUMENT ENGINEERINGInventor: Hartmut E. Kanngiesser
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Publication number: 20070282312Abstract: An ophthalmologic apparatus having a light projector for projecting femtosecond laser pulses for breaking down eye tissue, respectively focused onto a focal surface, comprises optical means for producing pulse processing areas (E) that are respectively formed on the focal surface by one of the femtosecond laser pulses, and have an area boundary (e) on the focal surface that deviates from a circular shape. By comparison with the conventional circular pulse processing areas, the noncircular pulse processing areas (E) are aligned with reference to a processing line (s) such that, given the same pulse spacing (p) relatively small overlap areas (B) arise from successive pulse processing areas (E). The energy irradiated into overlap areas (B) by successive femtosecond laser pulses is thereby reduced without bridges of tissue being left.Type: ApplicationFiled: May 31, 2007Publication date: December 6, 2007Applicant: SIE AG SURGICAL INSTRUMENT ENGINEERINGInventor: Christian Rathjen
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Publication number: 20070173793Abstract: To protect tissue in the treatment of an eye (3) with a focused pulsed laser beam (21) generated by a laser system (2), e.g. a femtolaser system, operating data which define an operating area operated on by the focus (F) of the laser beam (21) during the treatment are acquired in a device (1). The device (1) comprises a processing module (14) for providing control data for the laser system (2) on the basis of the operating data and taking into consideration the light propagation in the eye. The control data limit the time of the treatment by the focus (F) at positions within the operating area in each case in such a manner that tissue damage resulting from the treatment by the laser beam (21) is essentially prevented in eye structures located outside the operating area.Type: ApplicationFiled: January 18, 2007Publication date: July 26, 2007Applicant: SIE AG SURGICAL INSTRUMENT ENGINEERINGInventor: Christian Rathjen
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Publication number: 20070010804Abstract: An ophthalmological apparatus (1) comprises a base station (11) having a light source (51) for generating light pulses, and an application head (3) which can be mounted on an eye (2) having a light projector (58) for the focussed projection of the light pulses for punctiform breakdown of eye tissue (22). The application head (3) additionally has movement drivers (57) for moving the light projector (58) in a feed direction and in a first scanning direction. A scanner (52) is arranged in the base station (11) in order to deflect the light pulses in a second scanning direction. In addition, the ophthalmological apparatus (1) comprises an optical transmission system for transmitting deflected light pulses from the base station (11) to the application head (3), and for superimposing the light pulses deflected in the second scanning direction onto the movement of the light projector (58) in the first scanning direction.Type: ApplicationFiled: June 9, 2006Publication date: January 11, 2007Applicant: SIE AG Surgical Instrument EngineeringInventors: Christian Rathjen, Wolfgang Zesch, Michael Deyerler, Holger Lubatschowski, Tammo Ripken
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Publication number: 20050143718Abstract: A method is provided for surgical treatment of a patient's eye (1) by means of a laser, producing ultra-short laser pulses, and a transparent reference body (3), disposed been a laser applicator (4) and the eye (1). A transparent foil (5) is disposed between the reference body (3) and the eye (1). When the reference body (3) is applied onto the eye (1), the foil (5) protects the eye (1) from direct contact by the reference body (3). The laser is activated and the laser pulses are projected from the laser applicator (4) through the reference body (3) and the foil (5) to dissolve tissue of the eye (1). By moving the focal point of the pulsed laser beam into the foil (5), open cuts can be made in the eye (1), without damaging the reference body (3).Type: ApplicationFiled: December 2, 2004Publication date: June 30, 2005Applicant: SIE AG SURGICAL INSTRUMENT ENGINEERINGInventor: Christian Rathjen
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Publication number: 20040254568Abstract: An ophthalmological apparatus (1) has a handle (14) for manually holding and applying the ophthalmological apparatus (1), and has fastening means (11) for fixing the ophthalmological apparatus (1) at an eye (2). The ophthalmological apparatus (1) comprises a light source (12) and a light projector (13), optically connected to the light source (12), for the focussed projection of light pulses (3) for punctiform tissue breakdown at a focal point (F) in the interior of the eye tissue (21). The ophthalmological apparatus (1) also comprises a movement driver (15) for moving the light projector (13) equidistantly from a movement surface, and a contact body (16) which places an area of the eye equidistantly from the movement surface which is contacted in the mounted state.Type: ApplicationFiled: June 2, 2004Publication date: December 16, 2004Applicant: SIE AG Surgical Instrument EngineeringInventor: Christian Rathjen