Surgery – Truss – Pad
Patent
1992-03-03
1993-07-27
Hindenburg, Max
Surgery
Truss
Pad
128648, A61B 1900
Patent
active
052303470
ABSTRACT:
Apparatus for the determination of corneal thresholds, for example the corneal center, through the use of air flow to specific corneal sites, comprises a "stimulate" air flow path leading from an air compressor through a stimulate nozzle to the cornea for stimulation, and a "non-stimulate" air flow path leading from the air compressor to a calibrate nozzle, so that the force in the stimulate nozzle may be set before stimulation. A further "exhaust" air flow path is provided quickly to exhaust air from the stimulate nozzle to provide a sharp turn-off of the force of the air flow applied to the optic cornea, thereby obtaining a substantially rectangular stimulation characteristic. The nozzle is wide and flat with a dimple or recess formed substantially at or near the center thereof where air exits therefrom, so that the force and extent of air needed to stimulate the cornea is limited. Air flow is provided with a rapid off-flow, allowing for a more rectangular air flow characteristic, for stimulation of the cornea without damage and pain to the cornea. The nozzle may be positioned near to the cornea of a patient to be tested through the use of an eyeglass frame-type mounting and adjustment mechanism, or a headgear-type mounting and adjustment mechanism, or a slit lamp-type adjustment mechanism having a headrest member.
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Drozdenko Ronald
Weinstein Curt
Weinstein Sidney
Hindenburg Max
Neurocommunication Research Laboratories, Inc.
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