The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 1991
Filed:
Feb. 11, 1991
Britton Chance, Philadelphia, PA (US);
Nim Incorporated, Philadelphia, PA (US);
Abstract
A sensitive photon detector can be used for external detection in vivo of emission from a body organ, for instance of singlet oxygen emission in the near infrared at 1280 nm, for various purposes such as control of oxygenation of a patient. At such a wavelength bone and overlying tissue are sufficiently transparent to allow detection exteriorly of the body. Stray light and thermal emissions at this wavelength in a lit room are sufficiently low, or can otherwise be controlled, to allow detection of this singlet radiation by for instance a cooled Ge detector, to determine a rate of detected photons. Detection of this radiation can be taken for instance as indicating damage in process from over-oxygenation of a patient, allowing preventing and remedial measures to be taken in oxygen treatment. If a wavelength of interest is absorbed by overlying body tissues, insertion of an optical fiber leading to a detector, or of a detector itself, into the patient's body via a cavity of the body or otherwise can be employed for getting sufficiently close to the organ of interest.