Surgery – Truss – Pad
Patent
1982-10-13
1984-12-11
Cohen, Lee S.
Surgery
Truss
Pad
128634, 128673, 73705, A61B 502
Patent
active
044872062
ABSTRACT:
An intravascular catheter tip fiber optic pressure sensor wherein a lens element at the end of the fiber optic collimates the light emanating from the fiber and directs the light in a column towards a closely spaced reflecting diaphragm. The diaphragm is pressure responsive and modulates the focal length of the lens-diaphragm-mirror combination. Three optic fibers traverse the length of the hollow catheter tube, one carrying transmitted light to the tip, one carrying the reflected light from the diaphragm (i.e. the signal), and the third fiber carrying a reflected reference light. The reference detector provides a signal level to control the level of intensity of the light source.
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Lekholm et al., "Optoelectronic Transducer for Intravascular Measurements of Press. Variations", Med. and Biol. Engng., vol. 7, 1969, pp. 333-335.
Cohen Lee S.
Dahle Omund R.
Honeywell Inc.
Sykes Angela D.
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