Patent application number | Description | Published |
20080288024 | Medical Transceiver Device and Method - A medical transceiver device for radio-based communication with an implantable medical device has circuitry for transmitting radio-frequency signals to, and/or receiving radio-frequency signals from, the implantable medical device, first and second electrically conductive structures, and an antenna feed network operatively interconnected between the circuitry and the first and second conductive structures. Each of the first and second conductive structures is operable as a transmitting and/or receiving antenna for the radio-frequency signals. The first and second conductive structures emit and/or receive radio waves of different polarizations, and the first and second conductive structures are disposed adjacent each other at a single location in space, thereby providing spatial diversity that is independent of the polarization diversity. | 11-20-2008 |
20090088821 | Synchronization of implantable medical devices - An implantable medical device is synchronized for operation with an external device in communication therewith, by designating one of the implantable medical device or the external device as a master device, and the other as a slave device. In a first time interval, a reference time associated with the first time interval is transmitted from the master device to the slave device. The slave device sets a clock associated therewith based on the reference time and returns, in a second time interval, a second reference time generated by the slave device based on the first reference time. The master device confirms that the slave device is synchronized therewith if the second reference time is associated with the second time interval. The implantable medical device can then use its synchronized clock for time-stamping physiological data to be transmitted to the external device for processing. | 04-02-2009 |
20090132008 | MEDICAL APPARATUS AND SYSTEM - A medical system includes an implantable medical device configured for implantation in a living subject to interact with the subject, an extracorporeal device having a processor that processes information such as programming instructions for the implantable medical device or monitoring data received from the implantable medical device, and at least two antenna devices located at respectively different locations. The implantable medical device communicates with at least one of the two antenna devices, and the extracorporeal device also communicates with the at least two antenna devices to exchange the aforementioned information with the implantable medical device via at least one of the two antenna devices. The at least two antenna devices are physically separated from the extracorporeal device and the extracorporeal device communicates with each of the at least two antenna devices via a communication link that allows the extracorporeal device to be freely moved relative to the at least two antenna devices. The communication link can be a hard-wired communication link or a wireless communication link. | 05-21-2009 |
20090177250 | MEDICAL TELEMETRY SYSTEM AND OPERATING METHOD THEREFOR - A method in a telemetry system for establishing a connection between a base station and an implantable medical device includes the steps of: starting, in the base station, a first timer B-T | 07-09-2009 |
20090264964 | SYSTEM AND METHOD FOR RADIO COMMUNICATION BETWEEN AN IMPLANTABLE MEDICAL DEVICE AND AN EXTERNAL BASE UNIT - In a system and method for radio communication between an implantable medical device (IMD) and an external base unit, respectively including transceivers for communication therebetween, the external base unit, according to a predetermined criterion, sends a sleep message to the IMD transceiver, requesting the IMD transceiver to switch power-consuming circuitry in the IMD to a sleep, power-down mode of operation for a predetermined sleep time period. | 10-22-2009 |
20100049272 | IDENTIFICATION OF AN IMPLANTABLE MEDICAL DEVICE BY CORRELATING CARDIAC RELATED DATA - In a method and system for identifying an implantable medical device (IMD), which is arranged to be disposed in a body, by conducting a telemetry communication session between the implantable medical device and an external programmer device, cardiac data are registered from a point on the body of a patient having an IMD with which a communication session is to be established. The registered cardiac data are compared with one or more sets of intracardiac data pertaining to patients having an IMD implanted and to identify the IMD with which the communication session is to be conducted by the performed comparison. | 02-25-2010 |
20100066500 | SELECTION OF AN IMD BY MEANS OF DIRECTIONAL ANTENNA - In a method and a system for initiating communication with an implantable medical device to conduct a wireless communication session between the implantable medical device and an external programmer device. A directional antenna is employed for initiating communication between a programmer device and an implantable medical device (IMD). The IMD is targeted by the programmer device by having an operator of the programmer device orient the directional antenna toward the IMD and transmitting a communication-initiating signal from the programmer to the IMD via the directional antenna. The directional antenna has a directional characteristic and communication range. the IMD responds to the communication-initiating signal by sending identification information to the programmer. the programmer may then use this identification to establish a communication session with the IMD targeted by the directional antenna. | 03-18-2010 |
20100106222 | METHOD AND SYSTEM FOR INITIATING COMMUNICATION BETWEEN A HOME MONITORING DEVICE AND AN IMPLANTABLE MEDICAL DEVICE - In a method and system for establishing a wireless communication session between an implantable medical device IMD and a home monitoring device, the home monitoring device frequently sends communication-initiating signals to an IMD arranged within the body of a patient for establishing a communication session between the monitoring device and the IMD. In order to save energy, RF telemetry circuitry of the IMD is normally set in a low-power, idle mode. Occasionally, the RF circuitry will leave the low-power mode and enter an active mode in which it is able to detect a communication-initiating signal transmitted by the monitoring device. When a communication-initiating signal is detected, the IMD will respond accordingly to the monitoring device and a communication session will be established. In the present invention, the telemetry circuitry of the IMD will be controlled to wake up from low-power mode and enter an active detection mode independently of the transmission of the communication-initiating signals from the monitoring device. Hence, the external monitoring device will frequently transmit communication-initiating signals, but the IMD will only detect a wakeup signal when leaving its low-power mode and entering active mode at a predetermined instant of time. | 04-29-2010 |
20100292550 | IMPLANTABLE MEDICAL DEVICE - An analyte measuring system has an implantable medical device having a signal source arranged for generating a current signal and electrodes for applying the current signal to a surrounding tissue in a subject body. The device measures a resulting voltage signal with the electrodes and calculates an impedance signal therefrom. The system comprises a signal processor arranged for generating an estimate of a concentration of an analyte in the tissue based on a spectrum analysis of the determined impedance signal. | 11-18-2010 |
20110166614 | IMPLANTABLE ANALYTE RF SPECTROSCOPY MEASURING SYSTEM - An analyte measuring system includes implantable medical device having a RF signal source arranged for generating a RF signal and a transmitting antenna for transmitting the RF signal into a surrounding tissue in a subject body. The system has a receiving RF antenna for receiving the RF signal from the tissue and a signal processor arranged for generating an estimate of a concentration of an analyte in the tissue based on a spectral analysis of the received RF signal. | 07-07-2011 |
20110196453 | IMPLANTABLE MEDICAL DEVICE WITH AN IMPROVED ANTENNA - An implantable medical device has a housing having a first housing surface side, a second housing surface side opposing the first housing surface side, and an intermediate surface side extending between the first and second housing surface sides. The implantable medical device has an antenna device arranged at the first housing surface side, continuing at the intermediate surface side and further at the second housing surface side. Improved radiation characteristics are obtained in a desired direction. | 08-11-2011 |
20120010682 | MEDICAL TELEMETRY SYSTEM AND OPERATING METHOD THEREFOR - A method in a telemetry system for establishing a connection between a base station and an implantable medical device includes the steps of: starting, in the base station, a first timer B-T | 01-12-2012 |
20120229299 | METHODS FOR LOW POWER COMMUNICATION IN AN IMPLANTABLE MEDICAL DEVICE - The present invention is directed to an implantable medical device and a method for power management for power efficient use of RF telemetry during, for example, conditions where long periods of continuous monitoring of the device and the patient is desired such as during MRI procedures. A protocol module adapted to, at receipt of a low power protocol indication, activate and use a low power protocol for communication between the device and external units. The protocol module is capable of switching between different communication protocols including a low power communication protocol and a default RF communication protocol depending on, for example, whether continuous long-term monitoring of the patient is performed. During the low power communication protocol, the protocol module is adapted to select parts of stored electrophysical and/or hemodynamical signal waveforms for telemetric transmission and to create communication packages having a predetermined length using the selected parts of the electrophysiological and/or hemodynamical signal waveform. Further, a transmitter is instructed to transmit the communication packages at predetermined transmission intervals and the telemetry module is instructed to power down the transmitter or set the transmitter in a lowest possible activation state during intermediate periods between the transmission intervals. | 09-13-2012 |
20130234861 | IMPLANTABLE MEDICAL DEVICE ADAPTED FOR RADIO FREQUENCY TELEMETRY WITH FREQUENCY HOPPING - An implantable medical device has a broadband RF receiver operating within an RF band and having stored information of a characteristic receiver frequency representing the RF within the RF band at which the broadband RF receiver has sufficient receiver sensitivity. The stored information is retrieved in response to a message from an external communication device and is included in a response generated by the implantable medical device and transmitted to the communication device. The information enables the communication device to select its transmission frequency at a subsequent transmission instance to the relevant implantable medical device. The chances of successful reception at the subsequent transmission instance are thereby increased. | 09-12-2013 |
20130245621 | ABLATION STENT AND METHOD OF USING AN ABLATION STENT - Hypertension is treated in a patient by implanting an ablation stent in a renal artery of the patient. Energy is transmitted to the ablation stent to induce heating of the ablation stent, which causes ablation of a renal sympathetic nerve present on the outside of the portion of the renal artery comprising the ablation stent. A preferred ablation stent is in the form of an N-turn coil of an electrically conductive wire forming a meander structure. The respective ends of the wire are electrically connected to each other. | 09-19-2013 |