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US 6,091,975 AGranted
Minimally invasive detecting device
AssigneeAlza Corporation
InventorsPeter E. Daddona, Gregory T. Fieldson, Avtar S. Nat, Wei-Qi Lin
Life of this patent
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Abstract
An agent detecting device comprising a plate (6) having a plurality of microprotrusions (4) for piercing the skin of a patient. Each of the microprotrusions (4) having an electrode (14, 16 and 18) thereon for detecting the presence of an agent in the patient's interstitial fluid.
Claims29
A detecting device, comprising:
- a plate having at least one microprotrusion fixedly attached to the plate and extending therefrom;
- and
- an agent-detecting sensor on the microprotrusion, the microprotrusion having a length which locates the sensor below the outermost layer of a body surface and in contact with a body fluid.
A device for detecting an agent below an outermost layer of epidermis of a patient, comprising:
- at least one electrochemical sensor;
- and
- a plurality of skin-piercing microprotrusions fixedly attached to the device, each of the microprotrusions having an electrode of the electrochemical sensor thereon, the microprotrusions having a length, which locates the electrodes below the outermost layer of the epidermis and in contact with a body fluid.
A method for detecting an agent in a patient, comprising:
- placing a plate against the patient's skin, the plate having at least one microprotrusion fixedly attached to the plate and extending therefrom to pierce the skin when the plate is placed thereon, the microprotrusion having a sensor thereon to detect the agent, the microprotrusion having a length which locates the sensor below an outermost layer of epidermis of the patient and in contact with a body fluid;
- and
- detecting the agent.
Dependencies are inferred from the claim text.