Methods and devices for facilitated non-invasive oxygen monitoring
AssigneeAlza Corporation
InventorsJessica A. Warring, David B. Swedlow, Michael J. N. Cormier, Su Il Yum, Lina T. Taskovich, Albert Ollerdessen
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Abstract
The present invention is directed to a sensor system for use with a blood characteristic measurement device such as a pulse oximeter, on areas of the body having low normal cutaneous blood flow and for monitoring a blood characteristic such as oxygen saturation and pulse rate of patients, preferably over an extended period of time. The sensor system includes (a) a transdermal device containing a blood perfusion-enhancing agent that is administered in a controlled amount to the skin of a human patient and (b) a skin surface sensor.
Claims21
A transdermal delivery device for facilitating the non-invasive monitoring of a characteristic of a patient's blood vessels, wherein the device consists essentially of:
- (a) a backing member that is substantially impermeable to a perfusion-enhancing agent;
- (b) a first adhesive layer adjacent to the skin-distal surface of the backing member;
- (c) perfusion agent reservoir means adjacent to the skin-proximal surface of the backing member;
- and
- (d) means for maintaining said reservoir in perfusion agent transmitting relationship to the skin of the patient.
A transdermal delivery device for delivering a perfusion-enhancing agent to a human at a substantially constant rate over an extended period of time to obtain a localized increase of the cutaneous blood flow, wherein the device consists essentially of:
- (a) a backing member that is substantially impermeable to a perfusion-enhancing agent;
- (b) a first adhesive layer adjacent to the skin-distal surface of the backing member;
- (c) a perfusion agent reservoir means adjacent to the skin-proximal surface of the backing member;
- and
- (d) means for maintaining said reservoir in perfusion agent transmitting relationship to the skin of the patient.
Dependencies are inferred from the claim text.