Abstract: Systems, methods, and devices are provided for determining an impedance measurement of a sample of fluid on a test strip having a base layer, at least two drive electrodes disposed on the base layer and in electrical communication with a current-source (Iac) for flowing an AC current provided by the current-source (Iac) through a fluid sample between the at least two drive electrodes, and at least two sense electrodes disposed on the base layer and positioned between the at least two drive electrodes, each of the at least two sense electrodes configured for measuring a difference in an AC potential therebetween to determine an impedance measurement of the fluid sample between the at least two sense electrodes.

Abstract: Devices, methods and systems of disinfecting medical instruments, more particularly blood glucose meters. A disinfection cradle including a flat base for positioning the cradle on a surface, the cradle having a receptacle configured to receive the diagnostic apparatus, and a UV source positioned in the receptacle that is configured to administer a disinfection cycle to the diagnostic apparatus by directing UV light outward at the diagnostic apparatus received in the receptacle, the UV light being able to act as a disinfecting agent to the disinfection cradle and diagnostic apparatus.

Abstract: The present disclosure is directed towards a compact, modular infusion pump and a delivery mechanism for accurate dispensing of very small amounts of medication. The infusion pump comprises a tubular, curved medication reservoir, and a flexible, one-piece drive train configured to push very small amounts of medication out of the medication reservoir. A method of measuring a level of medication inside the medication reservoir or cross-checking the accuracy of medication delivery is also described.

Abstract: The present disclosure is directed towards a compact, modular infusion pump and a delivery mechanism for accurate dispensing of very small amounts of medication. The infusion pump comprises a tubular, curved medication reservoir, and a flexible, one-piece drive train configured to push very small amounts of medication out of the medication reservoir. A method of measuring a level of medication inside the medication reservoir or cross-checking the accuracy of medication delivery is also described.

Abstract: Systems, methods, and devices are provided for determining an impedance measurement of a sample of fluid on a test strip having a base layer, at least two drive electrodes disposed on the base layer and in electrical communication with a current-source (Iac) for flowing an AC current provided by the current-source (Iac) through a fluid sample between the at least two drive electrodes, and at least two sense electrodes disposed on the base layer and positioned between the at least two drive electrodes, each of the at least two sense electrodes configured for measuring a difference in an AC potential therebetween to determine an impedance measurement of the fluid sample between the at least two sense electrodes.

Abstract: Devices, methods and systems of disinfecting medical instruments, more particularly blood glucose meters. A disinfection cradle including a flat base for positioning the cradle on a surface, the cradle having a receptacle configured to receive the diagnostic apparatus, and a UV source positioned in the receptacle that is configured to administer a disinfection cycle to the diagnostic apparatus by directing UV light outward at the diagnostic apparatus received in the receptacle, the UV light being able to act as a disinfecting agent to the disinfection cradle and diagnostic apparatus.

Abstract: The present disclosure is directed towards a compact, modular infusion pump and a delivery mechanism for accurate dispensing of very small amounts of medication. The infusion pump comprises a tubular, curved medication reservoir, and a flexible, one-piece drive train configured to push very small amounts of medication out of the medication reservoir. A method of measuring a level of medication inside the medication reservoir or cross-checking the accuracy of medication delivery is also described.

Abstract: An integrated device for improving the visual system of a human subject includes a computer having a timer and in data communication with a display, a current source and a housing that contains the current source in addition to at least one of the display and the computer. The computer and display are adapted to present optical stimuli to a targeted region of an eye. The current source has at least one terminal for connection of at least one electrode assembly. The timer measures a time relationship.

Abstract: An adjustable and foldable device for visual field testing or treatment includes a computer display mounted on a base and presents visual stimuli to the patient. An associated head support assembly with a chinrest supports and positions the head of the subject with respect to the display. An articulated arm joins the base and the head support assembly. The arm will resist a given downward force supplied by the head, and is foldable toward the display to create a more compact and portable device. Additional articulations may allow the head support assembly to fold upon arm, and the arm to fold upon the base. The device may include a locking mechanism that secures the device in a folded or unfolded configuration.

Abstract: An integrated device for improving the visual system of a human subject includes a computer having a timer and in data communication with a display, a current source and a housing that contains the current source in addition to at least one of the display and the computer. The computer and display are adapted to present optical stimuli to a targeted region of an eye. The current source has at least one terminal for connection of at least one electrode assembly. The timer measures a time relationship.

Abstract: A cardiac stimulator for measuring pacing impedance includes a tank capacitor for delivering charge to the heart via leads, a shunt resistor, and high-impedance buffers for measuring pacing current through the shunt resistor. During the stimulation pulse, the voltage across the shunt resistor, as sampled by a high-impedance buffer, variously indicates lead and cardiac tissue resistance or capacitance. A high-impedance buffer measures the voltage between the tank capacitor and ground immediately following the stimulation pulse to allow estimation of the lead/heart tissue capacitance. A lead/heart tissue capacitance estimate is determined by look-up table is in memory or successive approximation. When the lead/heart tissue capacitance and lead resistance have been determined, a plurality of parameters for analyzing and optimizing a cardiac stimulation system may be calculated, such as the instantaneous current, the average current, the charge, and the energy delivered to the cardiac tissue.

Abstract: A technique for acquiring and accessing information from a medical implantable device is provided. Analog waveforms of interest are sensed and processed by signal acquisition circuitry. Analog parameters of interest are applied to selector switches which are controlled by a logic circuit. The logic circuit is also coupled an A/D converter for converting the analog signals to digital values. The digital values are stored in dedicated registers and are available for telemetry to an external device upon receipt of a request or prompt signal. When a digitized value is accessed and telemetered, the control logic circuit changes the conductive state of the selector switches to apply the corresponding analog signal to the A/D converter. The resulting digital value is applied to the corresponding register to refresh the accessed and telemetered value. The technique permits the external device to request and configure the implanted device to send only digitized values of interest.

Abstract: A cardiac stimulator for measuring pacing impedance includes a tank capacitor for delivering charge to the heart via leads, a shunt resistor, and high-impedance buffers for measuring pacing current through the shunt resistor. During the stimulation pulse, the voltage across the shunt resistor, as sampled by a high-impedance buffer, variously indicates lead and cardiac tissue resistance or capacitance. A high-impedance buffer measures the voltage between the tank capacitor and ground immediately following the stimulation pulse to allow estimation of the lead/heart tissue capacitance. A lead/heart tissue capacitance estimate is determined by look-up table is in memory or successive approximation. When the lead/heart tissue capacitance and lead resistance have been determined, a plurality of parameters for analyzing and optimizing a cardiac stimulation system may be calculated, such as the instantaneous current, the average current, the charge, and the energy delivered to the cardiac tissue.

Abstract: A cardiac stimulator capable of measuring pacing impedance includes a tank capacitor for delivering charge to the heart via device leads, a shunt resistor, and high-impedance buffers for measuring pacing current through the shunt resistor. Soon after the leading edge of the stimulation pulse, the voltage across the shunt resistor, as sampled by a high-impedance buffer, indicates lead and cardiac tissue resistance. Just prior to opening the pacing switch to terminate the stimulation pulse, the voltage across the shunt resistor is sampled by a high-impedance buffer and held once again to allow the capacitance of the lead/heart tissue to be calculated. In alternative embodiments, a high-impedance buffer measures the voltage between the tank capacitor and ground immediately following the stimulation pulse to allow estimation of the lead/heart tissue capacitance.

Abstract: A cardiac stimulator capable of measuring pacing impedance includes a tank capacitor for delivering charge to the heart via device leads, a shunt resistor, and high-impedance buffers for measuring pacing current through the shunt resistor. Soon after the leading edge of the stimulation pulse, the voltage across the shunt resistor, as sampled by a high-impedance buffer, indicates lead and cardiac tissue resistance. Just prior to opening the pacing switch to terminate the stimulation pulse, the voltage across the shunt resistor is sampled by a high-impedance buffer and held once again to allow the capacitance of the lead/heart tissue to be calculated. In alternative embodiments, a high-impedance buffer measures the voltage between the tank capacitor and ground immediately following the stimulation pulse to allow estimation of the lead/heart tissue capacitance.

Abstract: A cardiac stimulator capable of measuring pacing impedance includes a tank capacitor for delivering charge to the heart via device leads, a shunt resistor, and high-impedance buffers for measuring pacing current through the shunt resistor. Soon after the leading edge of the stimulation pulse, the voltage across the shunt resistor, as sampled by a high-impedance buffer, indicates lead and cardiac tissue resistance. Just prior to opening the pacing switch to terminate the stimulation pulse, the voltage across the shunt resistor is sampled by a high-impedance buffer and held once again to allow the capacitance of the lead/heart tissue to be calculated. In alternative embodiments, a high-impedance buffer measures the voltage between the tank capacitor and ground immediately following the stimulation pulse to allow estimation of the lead/heart tissue capacitance.

Abstract: A technique for acquiring and accessing information from a medical implantable device is provided. Analog waveforms of interest are sensed and processed by signal acquisition circuitry. Analog parameters of interest are applied to selector switches which are controlled by a logic circuit. The logic circuit is also coupled an A/D converter for converting the analog signals to digital values. The digital values are stored in dedicated registers and are available for telemetry to an external device upon receipt of a request or prompt signal. When a digitized value is accessed and telemetered, the control logic circuit changes the conductive state of the selector switches to apply the corresponding analog signal to the A/D converter. The resulting digital value is applied to the corresponding register to refresh the accessed and telemetered value. The technique permits the external device to request and configure the implanted device to send only digitized values of interest.