Amo Development, LLC

Tria Beauty, Inc.

Harvey I Liu

Hong Fu

Mark V Weckwerth

John P Beale

Robert E Grove

Tobin C Island

Alireza Malek Tabrizi

Jose L Garcia

James E Hill

Nima Khatibzadeh

Roger W Accurso

Patrick Reichert

Daryl Wong

Griffith E Altmann

Cynthia Villanueva

Deepali Mehta-Hurt

Andrew Voorhees

Charles A Schuetz

Alisyn Facemire

Leonard R Borrmann

Mohammad Saidur Rahaman

Jeffrey A Hoenshell

Pavel Vodkin

C Andrew Schuetz

A method implemented in an ophthalmic surgical laser system that employs a resonant scanner, scan line rotator, and XY- and Z-scanners, for forming a corneal flap in a patient's eye with improved bubble management during each step of the flap creation process. A pocket cut is formed first below bed level, followed by the bed connected to the pocket cut, then by a side cut extending from the bed to the anterior corneal surface. The pocket cut includes a pocket region located below the bed level and a ramp region connecting the pocket region to the bed. The bed is formed by a hinge cut and a first ring cut at lower laser energies, followed by a bed cut and then a second ring cut, which ensures that any location in the flap bed is cut twice to minimize tissue adhesion. The side cut is formed by multiple side-cut layers at different depths which are joined together. All cuts are formed by scanning a laser scan line generated by the resonant scanner.

Lasik flap cutting patterns including intrastromal pocket for bubble management

A method implemented in an ophthalmic surgical laser system for forming a corneal flap in a patient's eye with improved bubble management. The flap includes a horizontal bed and a vertical or near vertical side cut around the periphery of the bed except for an uncut hinge area. The side cut has a bubble barrier layer that can prevent bubbles formed by the laser-tissue interaction from escaping into an interface between the corneal and the patient interface lens. In some embodiments, the bubble barrier layer is a thin uncut layer, located in the epithelium of the cornea, that separates the side cut into two portions. In other embodiments, the side cut does not reach the anterior corneal surface, leaving an uncut bubble barrier layer located with the epithelium. In other embodiments, an additional side cut portion is formed through the uncut bubble barrier layer as the last step.

Lasik flap cutting patterns including bubble barrier layer in side cut for bubble management

A magnetic positioning system and related method for automated or assisted eye-docking in ophthalmic surgery. The system includes a magnetic field sensing system on a laser head and a magnet on a patient interface to be mounted on the patient's eye. The magnetic field sensing system includes four magnetic field sensors located on a horizontal plane for detecting the magnetic field of the magnet, where one pair of sensors are located along the X direction at equal distances from the optical axis of the laser head and another pair are located along the Y direction at equal distances from the optical axis. Based on relative magnitudes of the magnetic field detected by each pair of sensors, the magnetic field sensing system determines whether the patient interface is centered on the optical axis. The system controls the laser head to move toward the patient interface until the latter is centered on the optical axis.

Ophthalmic docking system with 3-dimensional automatic positioning using magnetic sensing array

An RF (radio frequency) positioning system and related method for automated or assisted eye-docking in ophthalmic surgery. The system includes an RF detector system on a laser head and an RFID tag on a patient interface to be mounted on the patient's eye. The detector system includes four RF antennas located on a horizontal plane for detecting RF signals from the RFID tag, where one pair of antennas are located along the X direction at equal distances from the optical axis of the laser head and another pair are located along the Y direction at equal distances from the optical axis. Based on relative strengths and phase difference of the RF signals detected by each pair of antennas, the RF detector system determines whether the patient interface is centered on the optical axis. The RF detector system controls the laser head to move toward the patient interface until the latter is centered on the optical axis.

Ophthalmic docking system with 3-dimensional automatic positioning using differential RF coupling

A single-piece patient interface device (PI) for coupling an patient's eye to an ophthalmic surgical laser system, which includes a rigid shell, a flexible suction ring joined to a lower edge of the shell, an applanation lens, and a flexible annular diaphragm which joins the applanation lens to the shell near the lower edge of the shell. The flexible diaphragm allows the applanation lens to move relative to the shell, including to shift in longitudinal and lateral directions of the shell and to tilt. In operation, the surgeon first secures the PI to the patient's eye by hand, and then couples the laser system to the PI by lowering the laser delivery head into the PI shell. During the lowering process, the laser delivery head presses the applanation lens down relative to the PI to applanate the cornea of the eye.

Patient interface device for ophthalmic surgical laser system

A compact system for performing laser ophthalmic surgery is disclosed. The systems and methods may be used to measure corneal thickness or other anatomy to prepare a treatment plan for any of numerous treatments, such as LASIK, PRK, intra stromal lenticular lens incisions, cornea replacement, or any other treatment. By using a reduced power femtosecond laser backscatter may be measured to calculate distances such as distances between an interior boundary and an exterior boundary of a cornea or other tissue.

Eye tissue measurements

An ophthalmic laser surgical system uses a confocal detector assembly to continuously detect a confocal signal during laser treatment, and based on the confocal signal, detects in real time a loss of tissue contact with the patient interface (PI) output surface. The detection is partly based on the change of reflectivity at the PI output surface when the optical interface changes from a lens-tissue interface to a lens-air interface. The behavior of the confocal signal upon loss of tissue contact is dependent on the treatment laser scan pattern being performed at the time of tissue contact loss. Thus, different confocal signal analysis algorithms are applied to detect tissue contact loss during different scans, such as the bed cut and side cut for a corneal flap. The real time confocal signal may also be used during eye docking to detect the establishment of tissue contact with the PI output surface.

Eye suction loss and corneal applanation detection in ophthalmic docking system using optical signal

A phototherapy device includes an outlet end to be placed in contact with a person's skin, a heat exchanger, an optical structure arranged between the heat exchanger and the outlet end, and a light source arranged between the heat exchanger and the outlet end, and configured to emit light for delivery to the skin through or adjacent the optical structure. The heat exchanger may include a first heat transfer portion thermally coupled to the light source for dissipating heat from the light source, and a second heat transfer portion thermally coupled to the optical structure for dissipating heat from the optical structure. The first and second heat transfer portions of the heat exchanger may be substantially thermally isolated from each other, e.g., partially or completely physically separated from each other.

Phototherapy device thermal control apparatus and method

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Fremont, CA, United States of America

Harvey I Liu