Optically based transcutaneous blood gas sensor
First Claim
1. An optically based transcutaneous blood gas sensor comprised of a reusable portion and a disposable portion wherein the reusable portion consists of a windowed, hermetically sealed enclosure containing environmentally sensitive opto-electronic components, said enclosure being connected to an external monitor, and wherein the disposable portion has means of attachment to the reusable portion and carries fluorophores sensitive to the effects of O2 and CO2.
1 Assignment
0 Petitions
Accused Products
Abstract
An optically based transcutaneous blood gas sensor is provided having a reusable sensor head and a disposable sensing cap. A separate receptacle detachably connects to the sensor head and is attached to a person'"'"'s skin by a layer of adhesive after a release liner is removed. The sensor head includes a sealed cavity housing one or more LEDs and one or more photodetectors. The disposable cap carries fluorescent targets which produces an amount of fluorescence as a function of blood gas concentration and the fluorescence is sensed by the photodetectors.
-
Citations
19 Claims
- 1. An optically based transcutaneous blood gas sensor comprised of a reusable portion and a disposable portion wherein the reusable portion consists of a windowed, hermetically sealed enclosure containing environmentally sensitive opto-electronic components, said enclosure being connected to an external monitor, and wherein the disposable portion has means of attachment to the reusable portion and carries fluorophores sensitive to the effects of O2 and CO2.
-
9. An optical based transcutaneous blood gas sensor comprising:
- a reusable sensor head having an enclosure with a cavity formed therein;
a light source carried within said cavity;
photodetector means carried within said cavity;
a window means for sealing said light source and said photodetector means within said cavity;
blood analyte fluorescent targets carried by a disposable cap for the sensor head; and
support means for holding said fluorescent targets and said reusable sensor head adjacent the skin of a person, whereby said fluorescent targets are illuminated by said light source and produces an amount of fluorescence as a function of said blood analyte concentration, and said fluorescence is sensed by said photodetector means. - View Dependent Claims (10, 11, 12, 13)
- a reusable sensor head having an enclosure with a cavity formed therein;
-
14. An optical based transcutaneous blood gas sensor comprising:
-
a reusable, hermetically sealed sensor head having an enclosure with a cavity formed therein, a light source carried within said cavity, photodetector means carried within said cavity, a window means for sealing said light source and said photodetector means within said cavity, a blood analyte fluorescent target, and a disposable support means for detachably holding said fluorescent target adjacent said window means and for holding said fluorescent target and said reusable sensor head adjacent the skin of a person, whereby said fluorescent target is illuminated by said light source and produces an amount of fluorescence as a function of said blood analyte concentration, and said fluorescence is sensed by said photodetector means. - View Dependent Claims (15, 16, 17, 18, 19)
-
Specification