초록 ▼

A method and apparatus for non-invasively measuring animal/human blood glucose and other metabolites including an excitation laser source, a negative pressure based sampling port which interfaces to a human or other animal tissue sample in vivo, a Raman spectrometer, and data analysis and display de

A method and apparatus for non-invasively measuring animal/human blood glucose and other metabolites including an excitation laser source, a negative pressure based sampling port which interfaces to a human or other animal tissue sample in vivo, a Raman spectrometer, and data analysis and display devices. The device can be made in a compact size and may be portable, and it can be used in homes, offices or clinics. A negative atmospheric sampling port is made of a vacuum chamber that is connected with an electrically or manually driven vacuum pump which creates a negative air pressure inside the vacuum chamber. Under the negative air pressure, a substantial amount of blood is "sucked" into a small area of the human finger so that measurement of an enhanced Raman signal can be made.

대표청구항 ▼

[ We claim:] [8.] A method of non-invasively analyzing the blood of a living human/animal comprising the steps of:providing a chamber having an opening that is small compared to the size of a particular human/animal body part;positioning said particular body part of a human/animal patient in engagem

[ We claim:] [8.] A method of non-invasively analyzing the blood of a living human/animal comprising the steps of:providing a chamber having an opening that is small compared to the size of a particular human/animal body part;positioning said particular body part of a human/animal patient in engagement with said opening;reducing the fluid pressure within said chamber when said opening is blocked by the portion of human/animal tissue forming the body part, the reduced pressure providing concentration of the blood within the portion of tissue blockingly engaging said opening;projecting luminous energy through said chamber and onto said portion of tissue;providing a shutter for selectively preventing said luminous energy from entering said chamber;monitoring the pressure within said chamber and causing said shutter to open only in the event that the pressure falls below a predetermined level;collecting luminous energy reflected from said portion of tissue; andanalyzing the collected luminous energy to determine certain characteristics of the blood concentrated in said tissue.