[특허]Power supply monitoring for an implantable device

Cyberonics, Inc.

검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
검색연산자

검색도움말
검색연산자	기능	검색시 예
()	우선순위가 가장 높은 연산자	예1) (나노 (기계 \| machine))
공백	두 개의 검색어(식)을 모두 포함하고 있는 문서 검색	예1) (나노 기계) 예2) 나노 장영실
\|	두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색	예1) (줄기세포 \| 면역) 예2) 줄기세포 \| 장영실
!	NOT 이후에 있는 검색어가 포함된 문서는 제외	예1) (황금 !백금) 예2) !image
*	검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색	예) semi*
""	따옴표 내의 구문과 완전히 일치하는 문서만 검색	예) "Transform and Quantization"

과학기술 지식인프라 ScienceON

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison, Kafe, Webinar 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Power supply monitoring for an implantable device

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61N-001/00
미국특허분류(USC)	607/029;
출원번호	US-0725962 (2010-03-17)
등록번호	US-8560070 (2013-10-15)
발명자 / 주소	Armstrong, Randolph K. Armstrong, Scott A. Inman, D. Michael Scott, Timothy L.
출원인 / 주소	Cyberonics, Inc.
대리인 / 주소	Cyberonics, Inc.
인용정보	피인용 횟수 : 0 인용 특허 : 93

초록
▼

A method and an apparatus for determining a time period remaining in a useful life of an energy storage device in an implantable medical device. The method may include measuring a voltage of the energy storage device to produce a measured voltage, and comparing the measured voltage to a transition voltage. While the measured voltage is greater than or equal to the transition voltage, the time period remaining in the energy storage device's useful life is approximated based upon a function of charge depleted. While the measured voltage is less than the transition voltage, the time period remaining in the energy storage device's useful life is approximated based upon a higher order polynomial function of the measured voltage. The transition voltage corresponds to a predetermined point on a energy storage device voltage depletion curve representing the voltage across the energy storage device over time.

대표
청구항
▼

1. An implantable medical device comprising: an energy storage device;a stimulation unit that is operatively coupled to the energy storage device and configured to provide an electrical signal;a memory device configured to store first electrical charge depletion rate information associated with an idle mode and second electrical charge depletion rate information associated with a stimulation mode; anda controller that is operatively coupled to the memory device, the stimulation unit and the energy storage device, wherein the controller comprises: a charge depletion determination unit configured to estimate an amount of energy depleted during operation based on a first depletion amount and a second depletion amount, wherein the first depletion amount is calculated based on the first electrical charge depletion rate information applied to one or more periods associated with the idle mode, and wherein the second depletion amount is calculated based on the second electrical charge depletion rate applied to one or more periods associated with the stimulation mode;a voltage determination unit configured to determine whether a measured voltage across the energy storage device is greater than or equal to a transition voltage of the energy storage device; andan energy indicator unit configured to indicate an amount of energy remaining in the energy storage device, wherein when the measured voltage is greater than or equal to the transition voltage, the amount of energy remaining is determined based on the amount of energy depleted, and wherein when the measured voltage is less than the transition voltage, the amount of energy remaining is determined based on a difference between the measured voltage and a voltage associated with end of service of the energy storage device. 2. The implantable medical device of claim 1, wherein when the measured voltage is less than the transition voltage, the amount of energy remaining is determined by dividing a first value by a second value, wherein the first value is determined based on a product of the difference between the measured voltage and the voltage associated with end of service of the energy storage device, an initial charge of the energy storage device, and a percentage of capacity of the energy storage device at the transition voltage, and wherein the second value is determined based on a product of an average current consumption rate and a difference between the transition voltage and the voltage associated with the end of service of the energy storage device. 3. The implantable medical device of claim 1, wherein the second electrical charge depletion rate information is based at least in part on one or more stimulation parameters related to the stimulation mode. 4. The implantable medical device of claim 3, wherein the one or more stimulation parameters include a pulse width, a pulse frequency, a pulse amplitude, or a combination thereof. 5. The implantable medical device of claim 1, wherein the transition voltage is approximately 2.6 volts. 6. The implantable medical device of claim 1, wherein the second electrical charge depletion rate information is based at least in part on lead impedance of a lead assembly that couples an electrode assembly to the stimulation unit. 7. The implantable medical device of claim 1, wherein the amount of energy depleted is determined based at least in part on an impedance correction factor. 8. The implantable medical device of claim 7, wherein the impedance correction factor is a constant impedance value. 9. The implantable medical device of claim 1, wherein the amount of energy depleted is determined based at least in part on a temperature correction factor, and wherein the temperature correction factor is based at least in part on a measured temperature of the energy storage device. 10. The implantable medical device of claim 1, wherein when the measured voltage is less than the transition voltage, the amount of energy remaining is determined using linear approximation. 11. The implantable medical device of claim 1, wherein when the measured voltage is less than the transition voltage, the amount of energy remaining is determined using polynomial regression. 12. The implantable medical device of claim 1, wherein the energy indicator unit is further configured to calculate time remaining until the energy storage device is not operational, and wherein when the measured voltage is less than the transition voltage, the time remaining is determined according to the following equation: time remaining =percent remaining ×[Cinitial/Iavg]; wherein percent remaining =(−b+SQRT(b2−4a(c−Vmeasured)))/2a;wherein a, b, and c are predetermined polynomial coefficients;wherein Vmeasured is the measured voltage;wherein Cinitial is an initial charge of energy storage device; andwherein Iavg is average current consumption rate. 13. The implantable medical device of claim 12, wherein the measured voltage used to determine the time remaining adjusted based on an impedance correction factor. 14. The implantable medical device of claim 13, wherein the impedance correction factor is a constant value. 15. The implantable medical device of claim 13, wherein the measured voltage is adjusted based on the impedance correction factor according to the following equation: adjusted measured voltage used to calculate time remaining =Vmeasured+[Rconst×Iavg]; wherein Rconst is the impedance correction factor constant. 16. The implantable medical device of claim 12, wherein a compensated voltage (Vcompensated) is determined based on compensation of the Vmeasured by a measured temperature of the energy storage device, and wherein the percentage remaining to determine the time remaining is calculated based on Vcompensated according to the following equation: wherein the percent remaining =(−b+SQRT(b2−4a(c−Vcompensated)))2a. 17. The implantable medical device of claim 16, wherein the compensated voltage is determined according to the following equation: Vcompensated=Vmeasured+(K×(Tbaseline−Tmeasurement)); andwherein Tmeasured is the measured temperature;wherein Tbaseline is a base temperature; andwherein K is a temperature compensation constant. 18. The implantable medical device of claim 1, wherein the transition voltage is determined according to the following equation: transition voltage =maximum of W volts and (X volts−(LOG(Iavg/Y))/Z); wherein W is a variable or constant voltage;wherein X is a voltage greater than W volts;wherein Iavg is the average current consumption rate; andwherein Y and Z are predetermined coefficients.

이 특허에 인용된 특허 (93)

IPC 상위 출원인

내보내기

상세정보
내보내기 구분	파일저장 인쇄 메일전송
구성항목	관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	> 총 건의 자료가 검색되었습니다. > 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) > 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. > 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) > 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오 > ~ > Text(ASCII format) Excel format

과학기술 지식인프라 ScienceON

ScienceON Chatbot

연합인증

특허 상세정보

Power supply monitoring for an implantable device

초록
▼

대표
청구항
▼

이 특허에 인용된 특허 (93)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

ScienceON Chatbot

연합인증

특허 상세정보

Power supply monitoring for an implantable device

초록 ▼

대표청구항 ▼

이 특허에 인용된 특허 (93)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

초록
▼

대표
청구항
▼