Patents by Inventor Valentine P. Injev
Valentine P. Injev 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: 8608681Abstract: An infusion pressure monitoring system for a phacoemulsification or vitrectomy machine to be operated by a health care provider includes an irrigation path configured to carry an irrigation solution to a surgical site and a fluid sensor configured to detect a fluid parameter in the irrigation path. An input device receives a variable fluid flow command from the health care provider commanding an irrigation fluid flow through the irrigation path at a flow rate corresponding to the command. A controller communicates with both the fluid sensor and the input device. The controller determines an expected fluid pressure value and a dynamically variable threshold pressure value based upon the variable fluid flow command.Type: GrantFiled: September 7, 2012Date of Patent: December 17, 2013Assignee: Alcon Research, Ltd.Inventor: Valentine P. Injev
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Publication number: 20120330337Abstract: An infusion pressure monitoring system for a phacoemulsification or vitrectomy machine to be operated by a health care provider includes an irrigation path configured to carry an irrigation solution to a surgical site and a fluid sensor configured to detect a fluid parameter in the irrigation path. An input device receives a variable fluid flow command from the health care provider commanding an irrigation fluid flow through the irrigation path at a flow rate corresponding to the command. A controller communicates with both the fluid sensor and the input device. The controller determines an expected fluid pressure value and a dynamically variable threshold pressure value based upon the variable fluid flow command.Type: ApplicationFiled: September 7, 2012Publication date: December 27, 2012Inventor: Valentine P. Injev
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Patent number: 8303530Abstract: A method employing a handpiece having at least one set of piezoelectric elements polarized to produce longitudinal motion when excited at the relevant resonant frequency. The piezoelectric crystals are connected to an ultrasonic horn to which a cutting tip is attached. The horn and/or the cutting tip contains a plurality of diagonal slits or grooves. The slits or grooves produce optimized torsional movement in the cutting tip when the piezoelectric crystals are excited at a second resonant frequency. When in torsional mode, material may clog the cutting tip. The present method includes the step of providing a pulse of longitudinal movement of the tip when clogging is detected.Type: GrantFiled: May 10, 2007Date of Patent: November 6, 2012Assignee: Novartis AGInventors: Valentine P. Injev, Robert J. Cionni
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Patent number: 8287486Abstract: An infusion pressure monitoring system for a phacoemulsification or vitrectomy machine to be operated by a health care provider includes an irrigation path configured to carry an irrigation solution to a surgical site and a fluid sensor configured to detect a fluid parameter in the irrigation path. An input device receives a variable fluid flow command from the health care provider commanding an irrigation fluid flow through the irrigation path at a flow rate corresponding to the command. A controller communicates with both the fluid sensor and the input device. The controller determines an expected fluid pressure value and a dynamically variable threshold pressure value based upon the variable fluid flow command.Type: GrantFiled: May 25, 2010Date of Patent: October 16, 2012Assignee: Alcon Research, Ltd.Inventor: Valentine P. Injev
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Publication number: 20110295191Abstract: An infusion pressure monitoring system for a phacoemulsification or vitrectomy machine to be operated by a health care provider includes an irrigation path configured to carry an irrigation solution to a surgical site and a fluid sensor configured to detect a fluid parameter in the irrigation path. An input device receives a variable fluid flow command from the health care provider commanding an irrigation fluid flow through the irrigation path at a flow rate corresponding to the command. A controller communicates with both the fluid sensor and the input device. The controller determines an expected fluid pressure value and a dynamically variable threshold pressure value based upon the variable fluid flow command.Type: ApplicationFiled: May 25, 2010Publication date: December 1, 2011Applicant: ALCON RESEARCH, LTD.Inventor: Valentine P. Injev
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Patent number: 7758546Abstract: A surgical handpiece having an active flow restrictor responsive to a feedback loop that can vary the fluid flow resistance through the handpiece.Type: GrantFiled: January 28, 2005Date of Patent: July 20, 2010Assignee: Alcon, Inc.Inventor: Valentine P. Injev
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Publication number: 20080281253Abstract: A method employing a handpiece having at least one set of piezoelectric elements polarized to produce longitudinal motion when excited at the relevant resonant frequency. The piezoelectric crystals are connected to an ultrasonic horn to which a cutting tip is attached. The horn and/or the cutting tip contains a plurality of diagonal slits or grooves. The slits or grooves produce optimized torsional movement in the cutting tip when the piezoelectric crystals are excited at a second resonant frequency. When in torsional mode, material may clog the cutting tip. The present method includes the step of providing a pulse of longitudinal movement of the tip when clogging is detected.Type: ApplicationFiled: May 10, 2007Publication date: November 13, 2008Inventors: Valentine P. Injev, Robert J. Cionni
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Publication number: 20080200878Abstract: A cassette having a molded flow channel contained on an elastomeric sheet that is bonded or mechanically attached to a rigid substrate. The flow channel projects outwardly from the exterior of the cassette so that a peristaltic pump having pump head rollers mounted radially from the axis of rotation of the pump motor compress the elastomeric flow channels against the rigid substrate during operation.Type: ApplicationFiled: February 20, 2008Publication date: August 21, 2008Inventors: Sherman G. Davis, Raphael Gordon, Valentine P. Injev, Kurt D. Leukanech, Michael D. Morgan, Mel M. Oliveira, Gary P. Sorensen, Daniel J. Wilson
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Patent number: 7393189Abstract: A cassette having a molded flow channel contained on an elastomeric sheet that is bonded or mechanically attached to a rigid substrate. The flow channel projects outwardly from the exterior of the cassette so that a peristaltic pump having pump head rollers mounted radially from the axis of rotation of the pump motor compress the elastomeric flow channels against the rigid substrate during operation.Type: GrantFiled: April 26, 2005Date of Patent: July 1, 2008Assignee: Alcon, Inc.Inventors: Sherman G. Davis, Raphael Gordon, Valentine P. Injev, Kurt D. Leukanech, Michael D. Morgan, Mel M. Oliveira, Gary P. Sorensen, Daniel J. Wilson
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Patent number: 6962488Abstract: A cassette having a molded flow channel contained on an elastomeric sheet that is bonded or mechanically attached to a rigid substrate. The flow channel projects outwardly from the exterior of the cassette so that a peristaltic pump having pump head rollers mounted radially from the axis of rotation of the pump motor compress the elastomeric flow channels against the rigid substrate during operation.Type: GrantFiled: April 4, 2003Date of Patent: November 8, 2005Assignee: Alcon, Inc.Inventors: Sherman G. Davis, Raphael Gordon, Valentine P. Injev, Kurt D. Leukanech, Michael D. Morgan, Mel M. Oliveira, Gary P. Sorensen, Daniel J. Wilson
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Publication number: 20030190244Abstract: A cassette having a molded flow channel contained on an elastomeric sheet that is bonded or mechanically attached to a rigid substrate. The flow channel projects outwardly from the exterior of the cassette so that a peristaltic pump having pump head rollers mounted radially from the axis of rotation of the pump motor compress the elastomeric flow channels against the rigid substrate during operation.Type: ApplicationFiled: April 4, 2003Publication date: October 9, 2003Inventors: Sherman G. Davis, Raphael Gordon, Valentine P. Injev, Kurt D. Leukanech, Michael D. Morgan, Mel M. Oliveira, Gary P. Sorensen, Daniel J. Wilson
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Patent number: 5800396Abstract: A self-contained adapter that is connected to a surgical console. The adapter contains all of the components necessary to allow different cassettes to be used with the surgical console.Type: GrantFiled: November 15, 1995Date of Patent: September 1, 1998Assignee: Alcon Laboratories, Inc.Inventors: Douglas M. Fanney, Valentine P. Injev, Richard A. Rossback, Gary P. Sorensen
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Patent number: 5718677Abstract: An aspiration tip having a relatively rigid cannula attached to a hub and an open end opposite the hub. The open end is sealed with a cap made from a soft, flexible material, such as rubber or soft plastic. The soft material reduces the likelihood that the posterior capsule will tear during cortical clean-up and capsule polishing.Type: GrantFiled: February 14, 1997Date of Patent: February 17, 1998Assignee: Alcon Laboratories, Inc.Inventors: Thomas G. Capetan, Valentine P. Injev
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Patent number: 5634912Abstract: An infusion sleeve having a two-piece body. The first piece is conical in shape and is attached to the handpiece by conventional methods. The distal end of the first piece contains a series of annular grooves. The second piece is tubular in shape and contains an annular rim or lip on the proximal end that interlocks within the annular grooves on the first piece.Type: GrantFiled: February 12, 1996Date of Patent: June 3, 1997Assignee: Alcon Laboratories, Inc.Inventor: Valentine P. Injev
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Patent number: D375553Type: GrantFiled: November 15, 1995Date of Patent: November 12, 1996Assignee: Alcon Laboratories, Inc.Inventors: Kevin M. Creed, James R. Dennewill, Valentine P. Injev, Diana J. Perrotta, Richard A. Rossback
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Patent number: D407488Type: GrantFiled: June 29, 1998Date of Patent: March 30, 1999Assignee: Alcon Laboratories, Inc.Inventor: Valentine P. Injev