System and method for controlling an implantable medical device subject to magnetic field or radio frequency exposure
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61N-001/00
A61M-031/00
A61K-009/22
출원번호
US-0655155
(2009-12-23)
등록번호
US-8090445
(2012-01-03)
발명자
/ 주소
Ginggen, Alec
출원인 / 주소
Codman Neuro Sciences Sárl
대리인 / 주소
Cheryl F. Cohen, LLC
인용정보
피인용 횟수 :
98인용 특허 :
25
초록▼
A system for controlling an implantable medical device (e.g., a drug delivery device) susceptible to malfunctioning during exposure to a magnetic field and/or Radio Frequency field (e.g., during a magnetic resonance imaging procedure) and a method for operating the same. Exposure of the implantable
A system for controlling an implantable medical device (e.g., a drug delivery device) susceptible to malfunctioning during exposure to a magnetic field and/or Radio Frequency field (e.g., during a magnetic resonance imaging procedure) and a method for operating the same. Exposure of the implantable device to the magnetic field and/or the Radio Frequency field is detected using the sensing device. When the detected magnetic field and/or Radio Frequency field exceeds a corresponding predetermined threshold level, an input signal is generated at the microcontroller. In response to the generated input signal, the microcontroller automatically triggers (i) a safety mode enabling a predetermined safety mode operation that alters some operation, without ceasing all operation, of the implantable medical device and/or (ii) after expiration of a predetermined safety mode time interval when the at least one field being detected falls below its corresponding predetermined threshold level or a predetermined period of time elapses, a self testing mode enabling a predetermined self testing operation to verify proper operation of the implantable medical device. Preferably, both the safety and self testing modes are automatically triggered.
대표청구항▼
1. A method for operating a system for controlling delivery of a therapy by an implantable drug delivery medical device susceptible to malfunctioning during exposure to at least one of a magnetic field or a Radio Frequency field, the method comprising the steps of: detecting exposure of the implanta
1. A method for operating a system for controlling delivery of a therapy by an implantable drug delivery medical device susceptible to malfunctioning during exposure to at least one of a magnetic field or a Radio Frequency field, the method comprising the steps of: detecting exposure of the implantable device to the at least one of the magnetic field or the Radio Frequency field using a sensing device;when the at least one field being detected exceeds a corresponding predetermined threshold level, generating an input signal at a microcontroller; andautomatically triggering, in response to the generated input signal, (i) a safety mode enabling a predetermined safety mode operation during which the implantable medical device ceases performance of all therapy without ceasing all operation of the implantable medical device, and (ii) after expiration of a predetermined safety mode time interval when the at least one field being detected falls below its corresponding predetermined threshold level or a predetermined period of time elapses, a self testing mode enabling a predetermined self testing operation to verify proper operation of the implantable medical device. 2. The method in accordance with claim 1, wherein the predetermined safety mode operation further comprises the steps of: (i) duplicating all data, (ii) saving all data to a memory, and (iii) storing data detected by the sensing device. 3. A method for operating a system for controlling an implantable medical device susceptible to malfunctioning during exposure to at least one of a magnetic field or a Radio Frequency field, the method comprising the steps of: detecting exposure of the implantable device to the at least one of the magnetic field or the Radio Frequency field using a sensing device;when the at least one field being detected exceeds a corresponding predetermined threshold level, generating an input signal at a microcontroller; andautomatically triggering, in response to the generated input signal, (i) a safety mode enabling a predetermined safety mode operation including calculating memory checksums, the enabled predetermined safety mode operation occurring while the at least one field being detected exceeds the corresponding predetermined threshold level, and (ii) after expiration of a predetermined safety mode time interval when the at least one field being detected falls below its corresponding predetermined threshold level or a predetermined period of time elapses, a self testing mode enabling a predetermined self testing operation to verify proper operation of the implantable medical device including verifying the checksums calculated during the safety mode. 4. The method in accordance with claim 3, wherein the predetermined safety mode operation further comprises the steps of: (i) duplicating all data, (ii) saving all data to a memory, and (iii) storing data detected by the sensing device. 5. A system for controlling delivery of a therapy by an, implantable drug delivery device susceptible to malfunctioning during exposure to at least one of a magnetic field or Radio Frequency field, the system comprising: a sensing device for detecting exposure of the implantable drug delivery device to the at least one of the magnetic field or the Radio Frequency field; anda microcontroller electrically connected to the sensing device, the microcontroller receiving an input signal when the at least one field being detected exceeds a corresponding predetermined threshold level; the microcontroller automatically triggering, in response to the input signal, (i) a safety mode enabling a predetermined safety mode operation during which the implantable medical device ceases performance of all therapy without ceasing all operation of the implantable medical device, and (ii) after expiration of a predetermined safety mode time interval when the at least one field being detected falls below its corresponding predetermined threshold level or a predetermined period of time elapses, a self testing mode enabling a predetermined self testing operation to verify proper operation of the implantable medical device. 6. The system in accordance with claim 5, wherein, during the predetermined safety mode operation, the microcontroller is programmed to duplicate all data, save all data to a memory, and store data detected by the sensing device. 7. A system for controlling an implantable device susceptible to malfunctioning during exposure to at least one of a magnetic field or Radio Frequency field, the system comprising: a sensing device for detecting exposure of the implantable drug delivery device to the at least one of the magnetic field or the Radio Frequency field; anda microcontroller electrically connected to the sensing device, the microcontroller receiving an input signal when the at least one field being detected exceeds a corresponding predetermined threshold level; the microcontroller automatically triggering, in response to the generated input signal, (i) a safety mode enabling a predetermined safety mode operation including calculating memory checksums, the enabled predetermined safety mode operation occurring while the at least one field being detected exceeds the corresponding predetermined threshold level, and (ii) after expiration of a predetermined safety mode time interval when the at least one field being detected falls below its corresponding predetermined threshold level or a predetermined period of time elapses, a self testing mode enabling a predetermined self testing operation to verify proper operation of the implantable medical device including verifying the checksums calculated during the safety mode. 8. The system in accordance with claim 7, wherein, during the predetermined safety mode, the microcontroller is programmed to duplicate all data, save all data to a memory, and store data detected by the sensing device.
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