Perfluorocarbon liquids useful in eye treatment and diagnostic procedures
申请人:CHILDREN'S HOSPITAL MEDICAL CENTER
公开号:EP0089232A2
公开(公告)日:1983-09-21
Perfluorocarbon liquids are disclosed as being useful as substitutes for the vitreous or aqueous of the eye, and as transparentizing agents in the cornea or lens of the eye. Radiopaque liquid perfluorocarbons are useful as radiopaque agents in diagnostic procedures on the eye.
Gas transport agents containing a perfluorocyclocarbon and an amine oxide are disclosed. These compositions provide emulsions or solutions for use in oxygen transport, particularly in animals. They are therefore useful as artificial blood compositions. Large concentrations of perfluorocarbons may be employed even up to 50% or more by volume in preparing emulsions, microemulsions or solutions. The emulsions or solutions are stable under room temperature storage conditions
Improvements in and relating to a method of detecting a certain gas in an animal
申请人:CHILDREN'S HOSPITAL MEDICAL CENTER
公开号:EP0118281A2
公开(公告)日:1984-09-12
A method to detect indirectly at least one gas, particularly dissolved gases, of an animal employing nuclear magnetic resonance techniques (NMR). The method examines an NMR spectrum to determine chemical shift relaxation times or spin-spin couplings for an element of an animal influenced by at least one gas of the animal, the chemical shift corresponding to the amount or identify of the gas.
A method to detect indirectly a temperature of an object employing nuclear magnetic resonance techniques (NMR). The method involves obtaining an NMR spectrum to determine chemical shift, relaxation times, spin-spin couplings or quadrupole couplings for an element of a compound having at least one conformational isomer wherein the compound is influenced by a temperature of the object.
The difference between the detected radio frequency signals for the same element, spectral patterns or chemical shifts corresponds to the temperature of the object.
Increased stability is conferred on oil-in-water emulsions of perfluorocarbons by addition of a minor (0.1-5% w/v) amount of a fluorinated compound of higher bailing point than the perfluoracarbon being emulsified. The added fluorinated compound is preferably a perfluorinated saturated polycyclic hydrocarbon. The most preferred additive is perfluoroperhydrofluoranthene.