Abstract: A device for implantation into a mammalian host has a dialysis tube with a lumen and a dialysis membrane enclosing the lumen. The dialysis tube has an outer diameter of 20 ?m to 600 ?m. The dialysis membrane has a molecular weight cutoff of from 25 kDa to 150 kDa and has a material composition of at least one of the following: polyethersulfone, polyarylethersulfone, polyethylene, polytetrafluoroethylene, polyvinylidene fluoride, and polypropylene. A therapeutic composition is disposed within the lumen and has cells that secrete a therapeutic compound. A matrix material embeds the cells. The matrix material is one or more of alginate, collagen, fibrin, extracellular matrix material, synthetic hydrogel, and acrylate. Also disclosed are a method of producing a device for implantation, a port system, and a cell secreting a therapeutic compound for use in treating disease by implantation of the cells in a device for implantation.

Abstract: Medical device efficiency detection methods and systems including a photoplethysmography (PPG) sensor device, a processor, a memory, and machine readable instructions that may cause the system to receive a notification at the PPG device from the medical device upon delivery of the therapy treatment, use the PPG device to search for a signal response of the user based on the notification within a period of time to generate a response signal indicative of therapy treatment delivery, and transmit an alert when the response signal is not generated in the period of time indicative of a failure to detect sufficient therapy treatment delivery. The instructions may cause the system to transmit an alert when signal measurements from the PPG device of an infusion site are not within a sufficient signal range to indicate the infusion site is insufficient for delivery of the therapy treatment by the medical device.

Abstract: An electrode system is disclosed for measuring a concentration or presence of an analyte under in-vivo conditions, where the electrode system includes at least one electrode with immobilized enzyme molecules and an improved diffusion barrier that controls diffusion of the analyte from body fluid surrounding the electrode system to the enzyme molecules. The diffusion barrier includes a hydrophilic polyurethane or a block copolymer having at least one hydrophilic block and at least one hydrophobic block. The electrode system also can include a spacer membrane that includes a hydrophilic copolymer of acrylic and/or methacrylic monomers.

Abstract: An inventive drug delivery system includes a reservoir that holds a drug to be administered. A drug applicator injects or infuses the drug, and a pump generates a flow of the drug from the reservoir to the drug applicator. A control system has a pressure sensor that measures pressure signals indicative of resistance against the flow of the drug and a processor is in communication with the pressure sensor. The control system detects with the pressure sensor a pressure signal indicative of the resistance against the flow of the drug while the drug is being administered and compares the measured pressure signal to a reference value. The control system also generates display data and provides it to an output device when the measured pressure signal exceeds the reference value. The display data includes a scheduled test reminder for a glucose level test that is communicated to an output device.

Abstract: The present invention relates to a method for detecting and in particular for measuring C-peptide. Specifically, the present invention relates to a displacement assay for quantitative determination of C-peptide in a sample.

Abstract: An inventive drug delivery system includes a reservoir that holds a drug to be administered. A drug applicator injects or infuses the drug, and a pump generates a flow of the drug from the reservoir to the drug applicator. A control system has a pressure sensor that measures pressure signals indicative of resistance against the flow of the drug and a processor is in communication with the pressure sensor. The control system detects with the pressure sensor a pressure signal indicative of the resistance against the flow of the drug while the drug is being administered and compares the measured pressure signal to a reference value. The control system also generates display data and provides it to an output device when the measured pressure signal exceeds the reference value. The display data includes a scheduled test reminder for a glucose level test that is communicated to an output device.