Patents by Inventor Rajeshwari Srinivasan
Rajeshwari Srinivasan 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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Publication number: 20230056328Abstract: An electrosurgical system includes an RF output stage configured to impart RF power between first and second electrodes; measurement circuitry measures current and voltage imparted between the first and second electrodes; a processing circuit calculates power and impedance, based upon the measured current and the measured voltage; the processing circuitry uses a proportional-integral-derivative control loop to control RF power imparted between the electrodes, based upon a selected one of the measured current, the measured voltage, calculated power, and the calculated impedance.Type: ApplicationFiled: August 19, 2022Publication date: February 23, 2023Inventors: Forrest R. Lundstrom, Rajeshwari Srinivasan
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Publication number: 20220370245Abstract: A laser eye surgery system includes a laser to generate a laser beam. A spatial measurement system generates a measurement beam and measure a spatial disposition of an eye. A processor is coupled to the laser and the spatial measurement system, the processor comprising a tangible medium embodying instructions to determine a spatial model of the eye in an eye coordinate reference system based on the measurement beam. The spatial model is mapped from the eye coordinate reference system to a machine coordinate reference system. A laser fragmentation pattern is determined based on a plurality of laser fragmentation parameters. The laser fragmentation pattern and the spatial model is rotated by a first rotation angle such that the spatial model is aligned with the reference axis of the machine coordinate reference system and the rotated laser fragmentation pattern is aligned with the corneal incision.Type: ApplicationFiled: August 4, 2022Publication date: November 24, 2022Inventors: Rajeshwari Srinivasan, Javier G. Gonzalez, Erik C. Kramme
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Publication number: 20220273493Abstract: A method of cataract surgery in an eye of a patient includes identifying a feature selected from the group consisting of an axis, a meridian, and a structure of an eye by corneal topography and forming fiducial mark incisions with a laser beam along the axis, meridian or structure in the cornea outside the optical zone of the eye. A laser cataract surgery system a laser source, a topography measurement system, an integrated optical subsystem, and a processor in operable communication with the laser source, corneal topography subsystem and the integrated optical system. The processor includes a tangible non-volatile computer readable medium comprising instructions to determine one of an axis, meridian and structure of an eye of the patient based on the measurements received from topography measurement system, and direct the treatment beam so as to incise radial fiducial mark incisions.Type: ApplicationFiled: May 19, 2022Publication date: September 1, 2022Inventors: Rajeshwari Srinivasan, Jeffrey A. Golda, Javier G. Gonzalez, David D. Scott, David A. Dewey, Noah Bareket, Georg Schuele
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Patent number: 11406537Abstract: A laser eye surgery system includes a laser to generate a laser beam. A spatial measurement system generates a measurement beam and measure a spatial disposition of an eye. A processor is coupled to the laser and the spatial measurement system, the processor comprising a tangible medium embodying instructions to determine a spatial model of the eye in an eye coordinate reference system based on the measurement beam. The spatial model is mapped from the eye coordinate reference system to a machine coordinate reference system. A laser fragmentation pattern is determined based on a plurality of laser fragmentation parameters. The laser fragmentation pattern and the spatial model is rotated by a first rotation angle such that the spatial model is aligned with the reference axis of the machine coordinate reference system and the rotated laser fragmentation pattern is aligned with the corneal incision.Type: GrantFiled: June 13, 2019Date of Patent: August 9, 2022Assignee: AMO DEVELOPMENT, LLCInventors: Rajeshwari Srinivasan, Javier G. Gonzalez, Erik C. Kramme
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Patent number: 11337857Abstract: A method of cataract surgery in an eye of a patient includes identifying a feature selected from the group consisting of an axis, a meridian, and a structure of an eye by corneal topography and forming fiducial mark incisions with a laser beam along the axis, meridian or structure in the cornea outside the optical zone of the eye. A laser cataract surgery system a laser source, a topography measurement system, an integrated optical subsystem, and a processor in operable communication with the laser source, corneal topography subsystem and the integrated optical system. The processor includes a tangible non-volatile computer readable medium comprising instructions to determine one of an axis, meridian and structure of an eye of the patient based on the measurements received from topography measurement system, and direct the treatment beam so as to incise radial fiducial mark incisions.Type: GrantFiled: August 2, 2019Date of Patent: May 24, 2022Assignee: AMO Development, LLCInventors: Rajeshwari Srinivasan, Jeffrey A. Golda, Javier G. Gonzalez, David D. Scott, David A. Dewey, Noah Bareket, Georg Schuele
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Publication number: 20190358084Abstract: A laser eye surgery system includes a laser to generate a laser beam. A spatial measurement system generates a measurement beam and measure a spatial disposition of an eye. A processor is coupled to the laser and the spatial measurement system, the processor comprising a tangible medium embodying instructions to determine a spatial model of the eye in an eye coordinate reference system based on the measurement beam. The spatial model is mapped from the eye coordinate reference system to a machine coordinate reference system. A laser fragmentation pattern is determined based on a plurality of laser fragmentation parameters. The laser fragmentation pattern and the spatial model is rotated by a first rotation angle such that the spatial model is aligned with the reference axis of the machine coordinate reference system and the rotated laser fragmentation pattern is aligned with the corneal incision.Type: ApplicationFiled: June 13, 2019Publication date: November 28, 2019Inventors: Rajeshwari Srinivasan, Javier G. Gonzalez, Erik C. Kramme
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Publication number: 20190350760Abstract: A method of cataract surgery in an eye of a patient includes identifying a feature selected from the group consisting of an axis, a meridian, and a structure of an eye by corneal topography and forming fiducial mark incisions with a laser beam along the axis, meridian or structure in the cornea outside the optical zone of the eye. A laser cataract surgery system a laser source, a topography measurement system, an integrated optical subsystem, and a processor in operable communication with the laser source, corneal topography subsystem and the integrated optical system. The processor includes a tangible non-volatile computer readable medium comprising instructions to determine one of an axis, meridian and structure of an eye of the patient based on the measurements received from topography measurement system, and direct the treatment beam so as to incise radial fiducial mark incisions.Type: ApplicationFiled: August 2, 2019Publication date: November 21, 2019Inventors: Rajeshwari Srinivasan, Jeffrey A. Golda, Javier G. Gonzalez, David D. Scott, David A. Dewey, Noah Bareket, Georg Schuele
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Patent number: 10369053Abstract: A method of cataract surgery in an eye of a patient includes identifying a feature selected from the group consisting of an axis, a meridian, and a structure of an eye by corneal topography and forming fiducial mark incisions with a laser beam along the axis, meridian or structure in the cornea outside the optical zone of the eye. A laser cataract surgery system a laser source, a topography measurement system, an integrated optical subsystem, and a processor in operable communication with the laser source, corneal topography subsystem and the integrated optical system. The processor includes a tangible non-volatile computer readable medium comprising instructions to determine one of an axis, meridian and structure of an eye of the patient based on the measurements received from topography measurement system, and direct the treatment beam so as to incise radial fiducial mark incisions.Type: GrantFiled: October 16, 2015Date of Patent: August 6, 2019Assignee: OPTIMEDICA CORPORATIONInventors: Rajeshwari Srinivasan, Jeffrey A. Golda, Javier G. Gonzalez, David D. Scott, David A. Dewey, Noah Bareket, Georg Schuele
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Patent number: 10327953Abstract: A laser eye surgery system includes a laser to generate a laser beam. A spatial measurement system generates a measurement beam and measure a spatial disposition of an eye. A processor is coupled to the laser and the spatial measurement system, the processor comprising a tangible medium embodying instructions to determine a spatial model of the eye in an eye coordinate reference system based on the measurement beam. The spatial model is mapped from the eye coordinate reference system to a machine coordinate reference system. A laser fragmentation pattern is determined based on a plurality of laser fragmentation parameters. The laser fragmentation pattern and the spatial model is rotated by a first rotation angle such that the spatial model is aligned with the reference axis of the machine coordinate reference system and the rotated laser fragmentation pattern is aligned with the corneal incision.Type: GrantFiled: October 16, 2015Date of Patent: June 25, 2019Assignee: OPTIMEDICA CORPORATIONInventors: Rajeshwari Srinivasan, Javier G. Gonzalez, Erik C. Kramme
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Publication number: 20160106588Abstract: A laser eye surgery system includes a laser to generate a laser beam. A spatial measurement system generates a measurement beam and measure a spatial disposition of an eye. A processor is coupled to the laser and the spatial measurement system, the processor comprising a tangible medium embodying instructions to determine a spatial model of the eye in an eye coordinate reference system based on the measurement beam. The spatial model is mapped from the eye coordinate reference system to a machine coordinate reference system. A laser fragmentation pattern is determined based on a plurality of laser fragmentation parameters. The laser fragmentation pattern and the spatial model is rotated by a first rotation angle such that the spatial model is aligned with the reference axis of the machine coordinate reference system and the rotated laser fragmentation pattern is aligned with the corneal incision.Type: ApplicationFiled: October 16, 2015Publication date: April 21, 2016Inventors: Rajeshwari Srinivasan, Javier G. Gonzalez, Erik C. Kramme
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Publication number: 20160095752Abstract: A method of cataract surgery in an eye of a patient includes identifying a feature selected from the group consisting of an axis, a meridian, and a structure of an eye by corneal topography and forming fiducial mark incisions with a laser beam along the axis, meridian or structure in the cornea outside the optical zone of the eye. A laser cataract surgery system a laser source, a topography measurement system, an integrated optical subsystem, and a processor in operable communication with the laser source, corneal topography subsystem and the integrated optical system. The processor includes a tangible non-volatile computer readable medium comprising instructions to determine one of an axis, meridian and structure of an eye of the patient based on the measurements received from topography measurement system, and direct the treatment beam so as to incise radial fiducial mark incisions.Type: ApplicationFiled: October 16, 2015Publication date: April 7, 2016Inventors: Rajeshwari Srinivasan, Jeffrey A. Golda, Javier G. Gonzalez, David D. Scott, David A. Dewey, Noah Bareket, Georg Schuele
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Patent number: 8162822Abstract: A unit of equipment designed for use in endoscopic surgery includes radio frequency identification (RFID) circuitry and a network interface. The RFID circuitry can be used to store information of various types, such as component usage tracking information, user preferences, usage logs, error logs, device settings, etc. The network interface allows the unit to communicate over an external network with a remote server. Information, such as information stored in the RFID circuitry or in a separate memory, may be sent over the network to a desired destination, such as a server operated by the manufacturer of the equipment.Type: GrantFiled: May 11, 2011Date of Patent: April 24, 2012Assignee: Stryker CorporationInventors: Hasan Ertas, Ruzbeh Shariff, Sohail Desai, Brannon P. Wells, Rajeshwari Srinivasan
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Publication number: 20110219125Abstract: A unit of equipment designed for use in endoscopic surgery includes radio frequency identification (RFID) circuitry and a network interface. The RFID circuitry can be used to store information of various types, such as component usage tracking information, user preferences, usage logs, error logs, device settings, etc. The network interface allows the unit to communicate over an external network with a remote server. Information, such as information stored in the RFID circuitry or in a separate memory, may be sent over the network to a desired destination, such as a server operated by the manufacturer of the equipment.Type: ApplicationFiled: May 11, 2011Publication date: September 8, 2011Inventors: Hasan Ertas, Ruzbeh Shariff, Sohail Desai, Brannon P. Wells, Rajeshwari Srinivasan
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Patent number: 7976461Abstract: A unit of equipment designed for use in endoscopic surgery includes radio frequency identification (RFID) circuitry and a network interface. The RFID circuitry can be used to store information of various types, such as component usage tracking information, user preferences, usage logs, error logs, device settings, etc. The network interface allows the unit to communicate over an external network with a remote server. Information, such as information stored in the RFID circuitry or in a separate memory, may be sent over the network to a desired destination, such as a server operated by the manufacturer of the equipment.Type: GrantFiled: January 30, 2006Date of Patent: July 12, 2011Assignee: Stryker CorporationInventors: Hasan Ertas, Ruzbeh Shariff, Sohail Desai, Brannon P. Wells, Rajeshwari Srinivasan
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Patent number: 7498950Abstract: RFID circuitry is used in an endoscopic light source unit to track cumulative light bulb use information. An inductively powered RFID tag is affixed to the light bulb assembly, and communicates wirelessly with an RF transceiver within the light source unit via a low-frequency modulation wave. The RFID tag includes memory which stores a value representing cumulative duration of use of the light bulb. The transceiver reads the value from the RFID tag and communicates the value to control circuitry in the light source unit, which tracks use of the light bulb within the light source unit. Based on such tracking, the transceiver periodically updates the value in the RFID tag via the wireless link. Cumulative bulb usage hours is displayed on the light source unit. The RFID tag also may store a custom password and/or other information.Type: GrantFiled: August 30, 2005Date of Patent: March 3, 2009Assignee: Stryker CorporationInventors: Hasan Ertas, Brannon P. Wells, Rajeshwari Srinivasan
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Patent number: 7154378Abstract: RFID circuitry is used in an endoscopic light source unit to track cumulative light bulb use information. An inductively powered RFID tag is affixed to the light bulb assembly, and communicates wirelessly with an RF transceiver within the light source unit via a low-frequency modulation wave. The RFID tag includes memory which stores a value representing cumulative duration of use of the light bulb. The transceiver reads the value from the RFID tag and communicates the value to control circuitry in the light source unit, which tracks use of the light bulb within the light source unit. Based on such tracking, the transceiver periodically updates the value in the RFID tag via the wireless link. Cumulative bulb usage hours is displayed on the light source unit. The RFID tag also may store a custom password and/or other information.Type: GrantFiled: September 11, 2003Date of Patent: December 26, 2006Assignee: Stryker CorporationInventors: Hasan Ertas, Brannon P. Wells, Rajeshwari Srinivasan
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Publication number: 20060149126Abstract: A unit of equipment designed for use in endoscopic surgery includes radio frequency identification (RFID) circuitry and a network interface. The RFID circuitry can be used to store information of various types, such as component usage tracking information, user preferences, usage logs, error logs, device settings, etc. The network interface allows the unit to communicate over an external network with a remote server. Information, such as information stored in the RFID circuitry or in a separate memory, may be sent over the network to a desired destination, such as a server operated by the manufacturer of the equipment.Type: ApplicationFiled: January 30, 2006Publication date: July 6, 2006Inventors: Hasan Ertas, Ruzbeh Shariff, Sohail Desai, Brannon Wells, Rajeshwari Srinivasan