최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0768202 (2001-01-22) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 712 인용 특허 : 25 |
An implanted medical device (e.g. infusion pump) and external device communicate with one another via telemetry wherein messages are transmitted under a robust communication protocol. The communication protocol gives enhanced assurance concerning the integrity of messages that impact medical operati
An implanted medical device (e.g. infusion pump) and external device communicate with one another via telemetry wherein messages are transmitted under a robust communication protocol. The communication protocol gives enhanced assurance concerning the integrity of messages that impact medical operations of the implantable device. Messages are transmitted using a multipart format that includes a preamble, a frame sync, a telemetry ID, data, and a validation code. The data portion of the message includes an op-code that dictates various other elements that form part of the message. The data portion may also include additional elements such as sequence numbers, bolus numbers, and duplicate data elements. A telemetry ID for the transmitting device may be implicitly embedded in the message as part of the validation code that is sent with the message and that must be pre-known by the receiver to confirm the integrity of the received message.
An implanted medical device (e.g. infusion pump) and external device communicate with one another via telemetry wherein messages are transmitted under a robust communication protocol. The communication protocol gives enhanced assurance concerning the integrity of messages that impact medical operati
An implanted medical device (e.g. infusion pump) and external device communicate with one another via telemetry wherein messages are transmitted under a robust communication protocol. The communication protocol gives enhanced assurance concerning the integrity of messages that impact medical operations of the implantable device. Messages are transmitted using a multipart format that includes a preamble, a frame sync, a telemetry ID, data, and a validation code. The data portion of the message includes an op-code that dictates various other elements that form part of the message. The data portion may also include additional elements such as sequence numbers, bolus numbers, and duplicate data elements. A telemetry ID for the transmitting device may be implicitly embedded in the message as part of the validation code that is sent with the message and that must be pre-known by the receiver to confirm the integrity of the received message. ice from an active powered mode to a shelf mode and reduce shelf current consumed by the device; wherein the device is an implantable defibrillator having a plurality of capacitors requiring periodic reforming and wherein the device includes a reform circuit that periodically charges the capacitors; and wherein the reform circuit causes the shelf mode circuit to return the device to the active powered mode prior to reforming the capacitors and causes the shelf mode circuit to reassert the shelf mode after charging the capacitors. 8. An implantable cardiac stimulation device including processing means for controlling operation of the device, real-time clock means for providing clock signals to the processing means, watch dog timer means operable at a duty cycle rate for detecting malfunction of the processing means, telemetry means for receiving external commands when in an active state and wake-up commands when in a standby state, therapy means for sensing cardiac activity and providing stimulation pulses to a heart, and depletable power supply means for supplying power to the processing means, the real-time clock means, the watch dog timer means, the telemetry means and the therapy means, an arrangement for placing the device into a shelf mode from a fully activated powered mode and reducing shelf current consumed by the device, the arrangement comprising shelf mode establishing means for disabling supply of power to the therapy means, decreasing the duty cycle of the watch dog timer means, setting the processor into a static state, and setting the telemetry means to the standby state responsive to shelf mode commands received by the telemetry means for placing the device into the shelf mode; wherein the watch dog timer means remains operational at the reduced duty cycle to detect processor errors during the shelf mode; and wherein a transmitting circuit of the telemetry means is disabled during the standby state and a receiving circuit of the telemetry circuit remains active during the standby state. 9. The device of claim 8 further including decoder means for enabling the shelf mode establishing means responsive to the telemetry means receiving plurality of predetermined serial commands. 10. The device of claim 9 wherein the decoder means enables the shelf mode establishing means responsive to each of the serial commands being received by the telemetry means within a preset time. 11. The device of claim 8 wherein the device is an implantable defibrillator having a plurality of capacitors requiring periodic reforming and wherein the arrangement includes reform means for periodically charging the capacitors. 12. The device of claim 8 wherein the shelf mode establishing means returns the device to the fully active powered mode responsive to a reset command being received by the telemetry means. 13. The device of claim 8 wherein the shelf current consumed by the device when the device is in the shelf mode is on the order of one microampere. 14. An implantable cardiac stimulation device including processing means for controlling operation of the device, real-time clock means for providing clock signals to the processing means, watch dog timer means operable at a duty cycle rate for detecting malfunction of the processing means, telemetry means for receiving external commands when in an active state and wake-up commands when in a standby state, therapy means for sensing cardiac activity and providing stimulation pulses to a heart, and depletable power supply means for supplying power to the processing means, the real-time clock means, the watch dog timer means, the telemetry means and the therapy means, an arrangement for placing the device into a shelf mode from a fully activated powered mode and reducing shelf current consumed by the device, the arrangement comprising shelf mode establishing means for disabling supply of power to the therapy means, decreasing the duty cycle of the watch dog timer means, setting the pr ocessor into a static state, and setting the telemetry means to the standby state responsive to shelf mode commands received by the telemetry means for placing the device into the shelf mode; wherein the device is an implantable defibrillator having a plurality of capacitors requiring periodic reforming and wherein the arrangement includes reform means for periodically charging the capacitors; and wherein the reform means causes the shelf mode establishing means to return the device to the fully active powered mode prior to reforming the capacitors and causes the shelf mode establishing means to reassert the shelf mode after charging the capacitors. 15. In a processor controlled implantable cardiac stimulation device having a real-time clock circuit, a watch dog timer circuit having a duty cycle, a telemetry circuit capable of operation in either an active mode or a standby mode, ancillary circuits that sense cardiac activity and provide stimulation pulses to a heart, and a power source that provides power to all of the circuits, a method of setting the device from an active powered mode to a shelf mode for reducing shelf current consumed by the device, the method including the steps of: receiving a shelf mode command signal with the telemetry circuit; and responsive to receiving the shelf mode command signal, placing the device into the shelf mode by disabling power to the ancillary circuits, decreasing the duty cycle of the watch dog timer, setting the processor into a static state and setting the telemetry circuit in the standby mode; wherein the watch dog timer remains operational at the decreased duty cycle to detect processor errors during the shelf mode; and wherein a transmitting circuit of the telemetry circuit is disabled during the standby mode and a receiving circuit of the telemetry circuit remains active during the standby mode. 16. The method of claim 15 wherein the placing step is performed responsive to the telemetry circuit receiving a plurality of predetermined serial commands comprising the shelf mode command signal. 17. The method of claim 16 wherein the placing step is performed responsive to each of the serial commands being received by the telemetry circuit within a preset time. 18. The method of claim 15 wherein the device is an implantable defibrillator having a plurality of capacitors requiring periodic reforming and wherein the method further includes the step of charging the capacitors at periodic intervals. 19. The method of claim 15 including the further step of receiving a reset command with the telemetry circuit and returning the device to the fully active powered mode responsive to receiving the reset command with the telemetry circuit. 20. In a processor controlled implantable cardiac stimulation device having a real-time clock circuit, a watch dog timer circuit having a duly cycle, a telemetry circuit capable of operation in either an active mode or a standby mode, ancillary circuits that sense cardiac activity and provide stimulation pulses to a heart, and a power source that provides power to all of the circuits, a method of setting the device from an active powered mode to a shelf mode for reducing shelf current consumed by the device, the method including the steps of: receiving a shelf mode command signal with the telemetry circuit; and responsive to receiving the shelf mode command signal, placing the device into the shelf mode by disabling power to the ancillary circuits, decreasing the duty cycle of the watch dog timer, setting the processor into static state and setting the telemetry circuit in the standby mode; wherein the device is an implantable defibrillator having a plurality of capacitors requiring periodic reforming and wherein the method further includes the step of charging the capacitors at periodic intervals; and wherein the reforming step includes the steps of returning the device to the active powered mode prior to reforming the capacitors and replac
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