Electrochemical sensor module
First Claim
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1. A sensor cartridge element comprising:
- a sensor module extending from a proximal end to a distal end, the sensor module including an analysis cell housing, a skin piercing member, and a skin piercing member anchor to which the skin piercing member is secured, the analysis cell housing defining an analysis cell and a sample passageway leading from the distal end of the sensor module to the analysis cell;
an electrode arrangement installed on the sensor module and arranged at least partially within the analysis cell of the sensor module, the electrode arrangement being configured to generate an electrical signal when exposed to a fluid sample collected in the analysis cell;
a delivery arrangement securely coupled to the sensor module, the delivery arrangement including a drug reservoir, a piston chamber, a piston rod disposed within the piston chamber, and a valve arrangement providing selective fluid communication between the drug reservoir and the piston chamber, the piston rod being disposed external of the drug reservoir, and the piston rod being coaxial with the skin piercing member, wherein the sensor cartridge is part of a sensor cartridge stack, and wherein the sensor cartridge is configured to couple to a second sensor cartridge element in the stack and a third sensor cartridge element in the stack.
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Abstract
Certain embodiments of a sensor cartridge element include a sensor module, an electrode arrangement installed on the sensor module, and a delivery arrangement securely coupled to the sensor module. The sensor module includes an analysis cell and a skin piercing member. The electrode arrangement generates an electrical signal when exposed to a fluid sample collected in the analysis cell. The delivery arrangement includes a drug reservoir, a piston chamber, and a valve arrangement providing selective fluid communication between the drug reservoir and the piston chamber. Metering electronics and an actuator can manage collection of fluid samples and/or dispensing of drug doses.
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Citations
23 Claims
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1. A sensor cartridge element comprising:
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a sensor module extending from a proximal end to a distal end, the sensor module including an analysis cell housing, a skin piercing member, and a skin piercing member anchor to which the skin piercing member is secured, the analysis cell housing defining an analysis cell and a sample passageway leading from the distal end of the sensor module to the analysis cell; an electrode arrangement installed on the sensor module and arranged at least partially within the analysis cell of the sensor module, the electrode arrangement being configured to generate an electrical signal when exposed to a fluid sample collected in the analysis cell; a delivery arrangement securely coupled to the sensor module, the delivery arrangement including a drug reservoir, a piston chamber, a piston rod disposed within the piston chamber, and a valve arrangement providing selective fluid communication between the drug reservoir and the piston chamber, the piston rod being disposed external of the drug reservoir, and the piston rod being coaxial with the skin piercing member, wherein the sensor cartridge is part of a sensor cartridge stack, and wherein the sensor cartridge is configured to couple to a second sensor cartridge element in the stack and a third sensor cartridge element in the stack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A device for sampling and dispensing, the device comprising
a housing, and a plurality of disposable cartridges, an actuator, and a controller disposed in the housing; -
each cartridge comprising; a sensor module extending from a proximal end to a distal end, the sensor module comprising a skin contact portion, a skin piercing element, an analysis cell housing defining a sample passageway, and an analysis cell in fluid communication with the piercing element, the analysis cell comprising at least first and second electrodes and adapted for analyzing the amount of analyte in a fluid sample, wherein the electrodes generate an electrical signal when exposed to a fluid sample collected in the analysis cell; a drug reservoir; and a delivery mechanism fluidly connecting the drug reservoir with the piercing element, the delivery mechanism comprising a piston chamber, a piston rod disposed within the piston chamber, and a valve arrangement providing selective fluid communication between the drug reservoir and the piston chamber, the piston rod being disposed external of the drug reservoir, and the piston rod being coaxial with the skin piercing element; wherein the actuator is constructed to actuate the delivery mechanism; and wherein the controller is operatively coupled with the actuator and capable of receiving signals from the analysis cell. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification