Alcon, Inc.

Alcon Research, Ltd.

Novartis Ag

Raphael Gordon

Michael D Morgan

Mikhail Boukhny

Gary P Sorensen

Ann Yadlowsky

Alexander N Artsyukhovich

Daniel J Wilson

Vincent A Baxter

Michael John Yadlowsky

Satish Yalamanchili

David A Thoe

Ahmad Salehi

Valentine P Injev

Mel Matthew Oliveira

Dan V Teodorescu

Kurt D Leukanech

Ralph E Svetic

David Dyk

Sherman G Davis

Craig Gary Wooldridge

Tiffany Marie Sutliff

James Yong Chon

John Morgan Bourne

Shawn X Gao

Sean Christopher Madden

Gregory S Layser

Roderick S Van

Partha Chandrakant

Ivan Milutinovic

Paul Avanzino

Hugh B Canelli

Craig Wooldridge

Tiffany Sutliff

Alexander Artsyukhovich

Sean Madden

David Thoe

Michael Yadlowsky

Michael Boukhny

A surgical cassette for an ophthalmic surgical system includes an irrigation conduit that is in fluid communication with a handpiece and carries fluid toward a surgical site. An aspiration conduit is in fluid communication with the handpiece and carries fluid away from the surgical site. An aspiration pump creates a vacuum pressure in the aspiration conduit to draw fluid through the aspiration conduit towards a drain reservoir. A reservoir couples with a pressure-vacuum source to manage the reservoir pressure. A valve is in fluid communication with the aspiration conduit and the reservoir and provides one or more channels between the aspiration conduit and the reservoir. One or more pressure sensors detect a pressure associated with the surgical site. A computer controls the valve in response to the pressure detected by the one or more pressure sensors.

System and method for post-occlusion surge mitigation

Systems and methods are disclosed for measuring fluid pressure in an ophthalmic surgical system. An example system comprises a fluid flow path and a pressure sensor system for measuring pressure in the fluid flow path. The pressure sensor system comprises a conductive, movable diaphragm having a first side and a second side, the first side of the diaphragm facing the fluid flow path, and an eddy current position sensor positioned on the second side of the diaphragm without contacting the diaphragm. The eddy current position sensor comprises a position sensor coil activatable by high frequency alternating current and signal conditioning electronics capable of sensing inductance or impedance or resonant frequency variation in the position sensor coil as a gap between the diaphragm and the position sensor coil changes and of translating that variation into a displacement signal correlated to fluid pressure. A method of measuring fluid pressure may be performed using one or more of the systems described herein.

Ophthalmic fluidics system with eddy current pressure sensor

According to certain embodiments, a surgical cassette for an ophthalmic surgical system comprises an irrigation conduit that is in fluid communication with a handpiece and carries fluid toward a surgical site. An aspiration conduit is in fluid communication with the handpiece and carries fluid away from the surgical site. An aspiration pump creates a vacuum pressure in the aspiration conduit to draw fluid through the aspiration conduit towards a drain reservoir. A reservoir couples with a pressure-vacuum source to manage the reservoir pressure. A valve is in fluid communication with the aspiration conduit and the reservoir, and provides one or more channels between the aspiration conduit and the reservoir. Each sensor detects a pressure associated with the surgical site. A computer controls the valve in response to the pressure detected by the one or more pressure sensors to mitigate a pressure or volume change.

Systems and methods for monitoring for an occlusion in an aspiration line during an ophthalmic surgical procedure. An ophthalmic surgical system may include a first aspiration pump located in a handpiece, a second aspiration pump located away from the handpiece such as in a console, and a pressure sensor located between the first aspiration pump and the second aspiration pump. The pressure sensor is adapted to monitor for an occlusion in the aspiration line upstream of the first aspiration pump. The second aspiration pump may be operated at the same flow rate as the first aspiration pump and/or to maintain a constant pressure between the second aspiration pump and the first aspiration pump. Systems and methods as disclosed allow for a handpiece pump located close to the working tip while providing reliable occlusion detection with a pressure sensor located away from the handpiece.

Aspiration systems and methods with multiple pumps and pressure sensor

A surgical system comprises a pressurized irrigation fluid source; an irrigation line fluidly coupled to the pressurized irrigation fluid source; a hand piece fluidly coupled to the irrigation line; and a controller for controlling the pressurized irrigation fluid source. The controller controls the pressurized irrigation fluid source based on an estimated flow value modified by a compensation factor.

Pressure control in phacoemulsification system

A surgical system comprises a pressurized irrigation fluid source; an irrigation line fluidly coupled to the pressurized irrigation fluid source; a hand piece fluidly coupled to the irrigation line; an irrigation pressure sensor located at or along the pressurized irrigation fluid source or irrigation line; and a controller for controlling the pressurized irrigation fluid source. The controller controls the pressurized irrigation fluid source based on a reading from the irrigation pressure sensor and an estimated flow value modified by a compensation factor.

An ophthalmic surgical system includes a display device and a user interface. The display device generates a display on an image of a patient's eye comprising a plurality of non-overlapping display sectors. Each display sector displays one of a plurality of user-selectable surgical parameters. A user interface receives a user selection of one or more of the user-selectable surgical parameters to be displayed.

Display for ophthalmic surgical console with user-selectable sectors

A hydraulically-driven Intra-Ocular Lens (IOL) insertion tool includes a body, a chamber within the body, a first fluid port providing fluid communication into the chamber, a piston positioned within the chamber and arranged to move within the chamber in response to the introduction or removal of fluid from the chamber, and an elongated member. The elongated member includes a distal end comprising an intra-ocular lens interface and a proximal end connected to the piston such that movement of the piston within the chamber causes corresponding movement of the elongated member.

Hydraulic injector and methods for intra-ocular lens insertion

A surgical system comprises a pressurized irrigation fluid source; an aspiration pressure sensor associated with an aspiration line; and a controller for controlling the pressurized irrigation fluid source. The controller controls the pressurized irrigation fluid source based on a reading from the aspiration pressure sensor and an estimated flow value modified by a compensation factor.

A surgical system with a variable controller that allows the user to selectively vary the level of venting performance.

Surgical system

A surgical system that is able to sense the onset of an occlusion or other surgical event as well as the instant an occlusion breaks. To help avoid overheating of the tip, the system determines an approximate temperature of the eye using an irrigation flow rate and reduces the power to the handpiece automatically if an overheating situation is predicted. Alternatively or in addition, the system monitors the power drawn by the handpiece, which is indicative of the cutting load on the tip, and automatically adjusts the power or stroke of the tip to compensate for increased loads on the tip.

Method of controlling a surgical system based on a load on the cutting tip of a handpiece

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Ladera Ranch, CA, United States of America

Raphael Gordon