Implantable medical device diagnostic data acquisition and storage
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-005/0432
출원번호
US-0791068
(2010-06-01)
등록번호
US-8200324
(2012-06-12)
발명자
/ 주소
Shen, Zhe
Bange, Joseph E.
Koshiol, Allan T.
출원인 / 주소
Cardiac Pacemakers, Inc.
대리인 / 주소
Faegre Baker Daniels LLP
인용정보
피인용 횟수 :
21인용 특허 :
66
초록▼
A method carried out by a therapeutic implantable medical device includes detecting a plurality of physiologic episodes and recording a set of diagnostic data associated with the plurality of physiological episodes. The plurality of physiologic episodes are prioritized based on episode types associa
A method carried out by a therapeutic implantable medical device includes detecting a plurality of physiologic episodes and recording a set of diagnostic data associated with the plurality of physiological episodes. The plurality of physiologic episodes are prioritized based on episode types associated with the physiologic episodes. The diagnostic data is analyzed based on a minimum and maximum number associated with each episode type relating to a minimum and maximum number of sets of diagnostic data to be recorded for the associated episode type. The recorded set of diagnostic data is deleted only if a later recorded set of diagnostic data is associated with a detected physiologic episode having an episode type of a higher priority, and deletion of the set of diagnostic data would not result in fewer sets of diagnostic data than the minimum number specified for the episode type associated with the set of diagnostic data.
대표청구항▼
1. A method carried out by a therapeutic implantable medical device (IMD), the method comprising: detecting a plurality of physiologic episodes;recording a set of diagnostic data associated with the plurality of physiological episodes;prioritizing the plurality of physiologic episodes based on episo
1. A method carried out by a therapeutic implantable medical device (IMD), the method comprising: detecting a plurality of physiologic episodes;recording a set of diagnostic data associated with the plurality of physiological episodes;prioritizing the plurality of physiologic episodes based on episode types associated with the physiologic episodes;analyzing the diagnostic data based on a minimum number and a maximum number associated with each episode type, wherein the minimum number indicates a minimum number of sets of diagnostic data to be recorded for the associated episode type, and wherein the maximum number indicates a maximum number of sets of diagnostic data to be recorded for the associated episode type; anddeleting the recorded set of diagnostic data only if a later recorded set of diagnostic data is associated with a detected physiologic episode having an episode type of a higher priority, and deletion of the set of diagnostic data would not result in fewer sets of diagnostic data than the minimum number specified for the episode type associated with the set of diagnostic data. 2. The method as recited in claim 1, further comprising: associating a therapy delivery attempt with one of the plurality of physiologic episodes, wherein the therapy delivery attempt occurs at a time after the associated physiologic episode;recording another set of diagnostic data at the time of the therapy delivery attempt; andassociating the another set of diagnostic data with the associated physiologic episode. 3. The method as recited in claim 1, wherein the recorded set of diagnostic data comprises one of electrogram data, marker data, processed waveform data, or other physiologic sensor data. 4. The method as recited in claim 3, further comprising compressing the single set of diagnostic data using differential pulse code modulation (DPCM) and Huffman encoding. 5. The method as recited in claim 1, wherein recording the set of diagnostic data comprises copying diagnostic data from a circular buffer into another part of memory. 6. The method as recited in claim 1, wherein the recording step comprises: in response to detecting a first physiologic episode, recording diagnostic data that is received during a first time span ending at a first specified end time;in response to detecting a second physiologic episode during the first time span, specifying a second end time; andrecording diagnostic data that is received during a second time span ending at the second specified end time to form the set of diagnostic data associated with both the first physiologic episode and the second physiologic episode. 7. The method as recited in claim 6, and further comprising: delivering therapy during the first time span or the second time span;in response to delivering therapy, specifying a third end time; andrecording diagnostic data that is received during a third time span ending at the third specified end time, wherein the diagnostic data received during the third time span is included in the set of diagnostic data. 8. The method as recited in claim 7, further comprising associating the delivering of therapy with one of the first physiologic episode or the second physiologic episode. 9. The method as recited in claim 8, further comprising transmitting data descriptive of the delivering of therapy in response to receiving a request for diagnostic data related to the physiologic episode that is associated with the delivering of therapy. 10. The method as recited in claim 6, further comprising associating the first physiologic episode with the set of diagnostic data by determining that the first physiologic episode occurred at a time included in the first time span. 11. The method as recited in claim 6, wherein the prioritizing step comprises prioritizing the first physiologic episode and the second physiologic episode based on a first episode type and a second episode type, respectively. 12. The method as recited in claim 11, and further comprising: detecting a third physiologic episode of a third episode type having a higher priority than the first physiologic episode;in response to detecting the third physiologic episode, recording diagnostic data to form another set of diagnostic data;determining whether more than a specified minimum number of sets of diagnostic data associated with episodes of the first episode type exist in memory; anddeleting the set of diagnostic data associated with the first physiologic episode if more than the specified minimum number of sets of diagnostic data associated with episodes of the first episode type exist in memory. 13. The method as recited in claim 11, and further comprising: detecting a third physiologic episode of a third episode type; andrecording diagnostic data to form another set of diagnostic data associated with the third physiologic episode if the maximum number of sets of diagnostic data associated with the third episode type do not exist in memory. 14. The method as recited in claim 6, wherein the IMD is operable to deliver therapy, and wherein the method further comprises: generating a physiologic episode data structure associated with, and descriptive of, the first physiologic episode;detecting one or more attempts to deliver therapy in response to detecting the first physiologic episode;for each of the one or more attempts to deliver therapy, generating a therapy delivery attempt data structure associated with, and descriptive of, the therapy delivery attempt; andassociating all of the therapy delivery attempt data structures with the physiologic episode data structure. 15. The method as recited in claim 14, wherein associating all of the therapy delivery attempt data structures with the physiologic episode data structure comprises generating a linked list of the therapy delivery attempt data structures.
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