摘要:
A system, method and program are disclosed for achieving rapid bit synchronization in low power medical device systems. Messages are transmitted via telemetry between a medical device and a communication device. The synchronization scheme uses a portion of a unique preamble bit pattern to identify the communication device allowing for economical communications with a minimum expenditure of energy. A special set of preamble bit patterns are utilized for their unique synchronization properties making them particularly suited for rapid bit synchronization. These unique preamble bit patterns further provide simplification to the preamble error detection logic.
摘要:
A relay device transfers information between a sensor system, which measures a physiological characteristic level of a user, and a fluid delivery system, which infuses a fluid into a user. The relay device includes a sensor system receiver for receiving communications from the sensor system in a sensor system format. The relay device also includes a processor for processing the communications from the sensor system and converting the communications for transmission in a delivery system format. The relay device further includes a delivery system transmitter for transmitting the converted communications in the delivery system format to the fluid delivery system. The sensor system and delivery system formats may utilize different frequencies and/or different communication protocols for communications transmitted between the sensor system and the fluid delivery system through the relay device.
摘要:
A system is provided for sensing blood glucose data of a patient. The system includes a sensor, user interface, and an optional auxiliary device. If the connection between the sensor and user interface is by a wire, the sensor remains powered when the wire is disconnected. The communication between the sensor and the user interface may be wireless. The auxiliary device can be a patient monitor or other display or signal device, which displays information about the blood glucose data collected by the sensor. The sensor is connected to sensor electronics, which include a sensor power supply, a voltage regulator, and optionally a memory and processor.
摘要:
A system is provided for sensing blood glucose data of a patient. The system includes a sensor, user interface, and an optional auxiliary device. If the connection between the sensor and user interface is by a wire, the sensor remains powered when the wire is disconnected. The communication between the sensor and the user interface may be wireless. The auxiliary device can be a patient monitor or other display or signal device, which displays information about the blood glucose data collected by the sensor. The sensor is connected to sensor electronics, which include a sensor power supply, a voltage regulator, and optionally a memory and processor.
摘要:
Method for providing a blood flow velocity display of blood flow in a blood vessel in an ultrasound imaging system by converting spectral Doppler mode data using estimates of blood flow angle and blood flow velocity. In particular, an embodiment of a first aspect of the present invention is a method which includes the steps of: (a) transmitting an acoustic beam to a region of interest in the blood vessel from a first sub-aperture array in a transducer array; (b) receiving a first echo beam from the region of interest at the first sub-aperture array, which first echo beam is generated by the acoustic beam, and a second echo beam from the region of interest at a second sub-aperture array, which second echo beam is generated by the acoustic beam; (c) estimating a first mean Doppler frequency from the first echo beam substantially in parallel with the step of estimating a second mean Doppler frequency from the second echo beam, both steps of estimating utilizing an auto-correlation algorithm; (d) estimating the angle of blood flow and blood flow velocity in the region of interest in the blood vessel from the first and second mean Doppler frequencies; (e) obtaining data to provide a spectral Doppler mode display; (f) converting the dam to provide a blood flow velocity distribution; and (g) displaying the blood flow velocity distribution along with the estimated blood flow angle.