Apparatus and method for monitoring intraocular and blood pressure by non-contact contour measurement
First Claim
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1. A system for measuring pressure in a vessel having a pressure deformable surface, the system comprising:
- a light beam emitter means for emitting a coherent light beam impinging directly upon the vessel surface without surface distortion, resulting in a light beam reflected from the vessel surface;
a light beam detector spaced relative to the emitter for detecting the light beam reflected from the vessel surface; and
,a signal processor means for determining changes in the pressure deformable surface of the vessel as a function of changes in the reflected light beam'"'"'s position on the detector.
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Abstract
The present invention describes apparatus and methods for long-term, repeatable measurement of pressure in vessels by measuring distortion signatures of the external surfaces of a vessel through calibration against a known and verifiable reference standard. It is particularly useful for measuring intraocular pressure, pressure in blood vessels and other physiological pressures. It is also adaptable for measuring pressure changes in virtually any vessel whose external surface is deformable such that pressure changes are transduced to the external surface of the confining vessel, as exemplified by process piping.
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Citations
21 Claims
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1. A system for measuring pressure in a vessel having a pressure deformable surface, the system comprising:
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a light beam emitter means for emitting a coherent light beam impinging directly upon the vessel surface without surface distortion, resulting in a light beam reflected from the vessel surface; a light beam detector spaced relative to the emitter for detecting the light beam reflected from the vessel surface; and
,a signal processor means for determining changes in the pressure deformable surface of the vessel as a function of changes in the reflected light beam'"'"'s position on the detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21)
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18. A two-dimensional stereo angles and axis for simultaneous line of intersection a5 same distance.
Specification