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| Number | Title | Issue Date |
| RE40470 | Body function measuring apparatus Body function measuring apparatus which provides: (1) an indication of the body function being measured, and (2) a loose probe condition by determining that the difference between the rate of change of a first body function signal, developed by a first sensor in the... | 08/26/2008 |
| 7289836 | Optical-based sensing devices An optical-based sensor for detecting the presence or amount of an analyte using both indicator and reference channels. The sensor has a sensor body with a source of radiation embedded therein. Radiation emitted by the source interacts with indicator membrane indica... | 10/30/2007 |
| 7248908 | Method for measuring the concentration of a substance in a living body and device for measuring the same concentration A fluorescence indicator is injected into a living body from a container via an injecting inlet to be chemically reacted with a substance in the living body. Then, an excitation light is irradiated to the living body from an excitation light source. Then, the thus o... | 07/24/2007 |
| 6697657 | Method and devices for laser induced fluorescence attenuation spectroscopy (LIFAS) Methods and devices for Laser Induced Fluorescence Attenuation Laser Induced Fluorescence Attenuation Spectroscopy (LIFAS) Spectrocopy, including, in particular, methods and devices for the detection of ischemia and hypoxia in biological tissue. The LIFAS... | 02/24/2004 |
| 5687719 | Pulse oximeter probe To determine the oxygen saturation and other parameters of blood flowing in a fetus positioned in the uterus by detecting the pulsation of the blood in the birthing process from the rupture of the water membrane to the delivery of the baby. An opening is ... | 11/18/1997 |
| 5515864 | Method and apparatus for the in vivo measurement of oxygen concentration levels by the indirect determination of fluoescence lifetime Methods are described for the in vivo topographic determination of tissue and bodily fluid oxygen concentration or PO2 within an imaged tissue, as well as a method for measuring blood or bodily fluid PO2 with a fiber optic catheter. ... | 05/14/1996 |
| 5434084 | Flow optrode having separate reaction and detection chambers There is disclosed a device capable of continuously measuring the presence and concentration of an analyte or analytes and a method for using said device in a liquid and/or a gas phase reaction volume. The inventive device comprises a sensor probe, a rese... | 07/18/1995 |
| 5272090 | Sensor element for determining the amount of oxygen dissolved in a sample A method and apparatus are described for an accurate determination of the concentration of a gas, vapor or a gas dissolved in a sample which compensate for variations in temperature and light - source intensity. The apparatus comprises a sensor containing... | 12/21/1993 |
| 5244810 | Analytical method A fiber-optic sensor or analytical apparatus and associated method which utilizes the combination of (a) a solid, semi-solid or liquid sensor body which is capable of selectively dissolving the analyte compound to be detected and analyzed into the sensor ... | 09/14/1993 |
| 5233194 | Optical gas sensor with enriching polymer A gas sensor using optical fiber technology to measure gas concentration in a test volume. In one embodiment, the sensor incorporates a gas enriching polymer which absorbs and concentrates carbon dioxide (CO2) from the test volume surrounding t... | 08/03/1993 |
| 5219527 | Sensor element and method for making the same A sensor element includes an analyte-permeable matrix which supports and maintains a sensing solution containing an analyte-sensitive indicator substance in a plurality of tiny vesicles. The sensor element is prepared by combining the sensing solution wit... | 06/15/1993 |
| 5186173 | Method for in vivo measurement of oxygen concentration levels A method for in vivo measurement of oxygen concentration levels in animal bodily fluids or tissues comprises administering a biocompatible fluoroescent probe sensitive to oxygen quenching and having a known unquenched fluorescence intensity to an animal b... | 02/16/1993 |
| 5115137 | Diagnosis by means of fluorescent light emission from tissue A sample (1) is irradiated by a pulse from a laser (2), creating fluorescence radiation, which is brought, in imaging relation or otherwise, to a detector (6) sensing from the same sample (1) in a plurality of spectral intervals (6A-6D), for obtaining int... | 05/19/1992 |
| 5094819 | Fluorescence-based optical sensor and method for detection of lipid-soluble analytes A sensor, probe, system and method for detecting the presence of or concentration of lipid-soluble analytes such as anesthetics, which involve the use of fluorophore-containing lipid layers or similar amphiphilic structures as the sensor. The lipid layer ... | 03/10/1992 |
| 5030420 | Apparatus for oxygen determination Quenching luminescence of the tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) perchorate, immobilized in a silicone rubber by oxygen is shown to be an accurate and precise method for measuring oxygen concentration in solutions and in the gas phas... | 07/09/1991 |
| 5012809 | Fiber optic catheter system with fluorometric sensor and integral flexure compensation A sensor for measuring fluid concentrations or the temperature of body. A fiber-optic catheter having a fluorometric sensor attached at a distal end is excited by a light source outside the body. The sensor fluoresces with an intensity or with a lifetime ... | 05/07/1991 |
| 4830013 | Intravascular blood parameter measurement system A parameter of blood is sensed in vivo with a system which includes a catheter and a probe. The catheter has a lumen extending therethrough, a proximal end, a distal end and a distal opening at the distal end. The probe includes one or more sensors at its... | 05/16/1989 |
