Med-logics, Inc.

Other

James Robert Dennewill

Gregg Hughes

Rodney L Ross

Rod Ross

Mark Moyer

Nader Nazarifar

A tissue removal device includes a hollow needle, an ultrasonic transducer for mechanically vibrating the needle, an aspiration line communicating with the needle, and a vacuum pulsing device for generating vacuum pulses in the needle. The device may be utilized for breaking up tissue by phacoemulsification, vacuum pulsing, or both.

Tissue removal devices, systems and methods

A tissue removal device includes a rigid aspiration cannula, a valve communicating with the aspiration cannula in a fluid-sealed manner, and a pneumatically-driven actuator configured for moving the valve between an open position and a closed position, wherein at the open position the valve defines an aspiration path through the aspiration cannula and the valve, and at the closed position the valve prevents vacuum from being applied at the distal tip.

A microkeratome cutting head includes a head structure, an applanation plate, and a stromal plate. The head structure may include a blade cavity for receiving a blade and a blade opening through which the blade extends. The blade is configured for creating a corneal flap at a corneal flap thickness. The applanation plate is disposed at an elevation above the stromal plate plane. The elevation difference is approximately equal to the corneal flap thickness. An artificial anterior chamber (AAC) system is used to hold the donor eye for interfacing with the microkeratome. The AAC system includes an optional pressure valve and pressure gauge in a closed loop system for the user or surgeon to control line pressure applied to the donor eye during the procedure.

Artificial anterior chamber system

A microkeratome that includes a latch assembly that couples a head to a hand piece. The latch assembly allows the head to be readily detached from the hand piece and sterilized. There is no need to also sterilize the hand piece. The microkeratome also has a ring assembly that is coupled to the head and the hand piece. The ring assembly may include a fastener that can be unfastened to allow the hand piece and head to be detached from the ring, even while the ring assembly is fixed to a cornea. The hand piece includes a motor that moves the blade across the ring. The microkeratome may have an aspiration connector with a collar that limits the travel of the blade the and thickness of a resulting lamella flap. The aspiration connector can be replaced with a collar of a different diameter to produce a flap with a different thickness.

Microkeratome with a detachable head

A blade assembly that can be assembled into a microkeratome which is used to cut a cornea. The blade assembly is constructed in a manner that minimizes the tolerance of the cutting depth into the cornea. The blade assembly includes a blade holder that can be pressed onto a blade. The relative position of the blade holder can be calibrated to control the distance between a reference surface of the blade holder and the cutting edge of the blade. This distance defines the cutting depth of the blade. The blade holder is coupled to the blade with an interference fit that both secures the holder while providing for calibration of the assembly.

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Cerritos, CA, United States of America

James Robert Dennewill