Abstract: Techniques are provided to enable the registration of an embedded device with a wireless network, such as a Wi-Fi network. An established client of the wireless network formulates one or more data packets having an unencrypted multicast address, where at least a portion of the multicast address is unnecessary for transmission of the data packets over the wireless network. The established client inserts network configuration information in the unused portion of the multicast address and transmits the data packets over wireless network. The network configuration information can include a network identification (SSID) and network password. Any access point that receives the multicast packets will retransmit multiple times per standard protocol, allowing the embedded device to receive the original transmission from the client device or the retransmissions.

Abstract: The present invention generally relates to a control system for a rotary blood pump adapted to move blood in a patient. The control system comprises a means for measuring and varying the speed of the pump and a means for measuring the pulsatility index of a patient, and the control system is adapted to maintain the pulsatility index at or near a predetermined value by varying the speed of the pump. The pulsatility index is derived from the amplitude of the actual pump speed over a predetermined time period. Optionally, also, the control system can calculate the second derivative of instantaneous speed of the rotary blood pump and use the calculation of the second derivative of instantaneous speed to detect a suction event, and help prevent it.

Abstract: Techniques are provided to enable the registration of an embedded device with a wireless network, such as a Wi-Fi network. An established client of the wireless network formulates one or more data packets having an unencrypted multicast address, where at least a portion of the multicast address is unnecessary for transmission of the data packets over the wireless network. The established client inserts network configuration information in the unused portion of the multicast address and transmits the data packets over wireless network. The network configuration information can include a network identification (SSID) and network password. Any access point that receives the multicast packets will retransmit multiple times per standard protocol, allowing the embedded device to receive the original transmission from the client device or the retransmissions.

Abstract: The present invention generally relates to is control system for a rotary Wood pump adapted to move blood in a patient. The control system comprises a means for measuring and varying the speed of the pump and a means for measuring the pulsatility index of a patient, and the control system is adapted to maintain the pulsatility index at or near a predetermined vitae by varying the speed of the pump. The pulsatility index is derived from the amplitude of the actual pump speed over a predetermined time period. Optionally, also, the control system can calculate the second derivative of instantaneous speed of the rotary blood pomp and use the calculation of the second derivative of instantaneous speed to detect a suction event, and help prevent it.

Abstract: The present invention generally relates to a control system for a rotary blood pump adapted to move blood in a patient. The control system comprises a means for measuring and varying the speed of the pump and a means for measuring the pulsatility index of a patient, and the control system is adapted to maintain the pulsatility index at or near a predetermined value by varying the speed of the pump. The pulsatility index is derived from the amplitude of the actual pump speed over a predetermined time period. Optionally, also, the control system can calculate the second derivative of instantaneous speed of the rotary blood pump and use the calculation of the second derivative of instantaneous speed to detect a suction event, and help prevent it.

Abstract: The present invention generally relates to a control system for a rotary blood pump adapted to move blood in a patient. The control system comprises a means for measuring and varying the speed of the pump and a means for measuring the pulsatility index of a patient, and the control system is adapted to maintain the pulsatility index at or near a predetermined value by varying the speed of the pump. The pulsatility index is derived from the amplitude of the actual pump speed over a predetermined time period. Optionally, also, the control system can calculate the second derivative of instantaneous speed of the rotary blood pump and use the calculation of the second derivative of instantaneous speed to detect a suction event, and help prevent it.

Abstract: A method of tuning a DC brushless motor, wherein measurement of back EMF voltage is used to detect changes in the torque requirements caused by variation in the operating conditions of the DC brushless motor, the method including varying the timing of the driving signals to the motor to compensate for the changes in the torque requirements.

Abstract: A switch for use with a medical device. The switch includes an accelerometer for detecting motion, a controller cooperating with said accelerometer to determine whether said detected motion is substantially identical to a predefined motion of a user. The controller alters the functioning state of the medical device, if the detected motion is substantially identical to the predefined motion of the user.