Techniques for Data Reporting in an Implantable Medical Device

• US 20130197944A1
• Filed: 03/14/2013
• Published: 08/01/2013
• Est. Priority Date: 11/02/2004
• Status: Abandoned Application

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Drew, Touby A., Giftakis, Jonathon E.
• Application Number:
  US13/803,462
• Publication Number:
  US 20130197944A1
• Time in Patent Office: Days
• US Class Current: 705/3
• CPC Class Codes: A61B 5/0006 ECG or EEG signals
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/24 Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
• CPC Class Codes: A61B 5/316 Modalities, i.e. specific diagnostic methods
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/369 Electroencephalography [EEG] devices for psychotechnics A61B5/16
• CPC Class Codes: A61B 5/4076 Diagnosing or monitoring particular conditions of the nervous system A61B5/4821, A61B5/4824 take precedence
• CPC Class Codes: A61B 5/4094 Diagnosing or monitoring seizure diseases, e.g. epilepsy
• CPC Class Codes: A61B 5/7232 involving compression of the physiological signal, e.g. to extend the signal recording period
• CPC Class Codes: A61N 1/36132 using patient feedback
• CPC Class Codes: A61N 1/3614 based on impedance measurement
• CPC Class Codes: A61N 1/36521 the parameter being derived from measurement of an electrical impedance
• CPC Class Codes: A61N 1/36585 controlled by two or more physical parameters
• CPC Class Codes: A61N 1/3702 Physiological parameters A61N1/365 takes precedence; evoked response A61N1/371
• CPC Class Codes: A61N 1/37252 Details of algorithms or data aspects of communication system, e.g. handshaking, transmitting specific data or segmenting data
• CPC Class Codes: A61N 1/37282 characterised by communication with experts in remote locations using a network
• CPC Class Codes: G16H 10/60 for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: G16H 15/00 ICT specially adapted for medical reports, e.g. generation or transmission thereof
• CPC Class Codes: G16H 20/40 relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: G16H 40/63 : for local operation
• CPC Class Codes: G16H 40/67 : for remote operation

Abstract

Methods and apparatus for storing data records associated with a medical monitoring event in a data structure. An implanted device obtains data and stores the data in the data record in a first data structure that is age-based. Before an oldest data record is lost, the oldest data record may be stored in a second data structure that is priority index-based. The priority index may be determined by a severity level and may be further determined by associated factors. The implanted device may organize, off-load, report, and/or display a plurality of data records based on an associated priority index. Additionally, the implanted device may select a subset or composite of physiologic channels from the available physiologic channels based on a selection criterion.

Claims

1. A method for reporting neurologic data of a plurality of-neurologic events from an implantable medical device to an external device, comprising:

obtaining a plurality of data records that include indications of a plurality of neurologic events with the implantable medical device, the data record of each neurologic event including data for each of a plurality of activities occurring during the neurologic event;

respectively assigning a plurality of severity levels to the activities of each neurologic event with the implantable medical device;

determining a priority index for the data record of each neurologic event with the implantable medical device, wherein the determination of the priority index depends upon the plurality of severity levels respectively assigned to the plurality of activities occurring during the neurologic event;

selecting a set of data records from the plurality of data records, the selection based upon the data records of the selected set being higher in the priority index than the other data records of the plurality of data records; and

communicating a set of the selected data records from the implantable medical device to the external device via telemetry.

2. The method of claim 1, further comprising displaying portions of at least one of the selected data records of the set.

3. The method of claim 1, wherein selecting the set of data records for transferring to the external device comprises selecting the data records that are greater in the priority index than a predetermined level of the priority index.

4. The method of claim 1, wherein selecting the set of data records for transferring to the external device is performed such that the number or size of data records of the set is limited to a predetermined number or size.

5. The method of claim 1, further comprising releasing memory space previously allocated to the set of selected data records.

6. The method of claim 5, wherein releasing the memory space comprises marking the memory space for deletion.

7. The method of claim 5, wherein release the memory space comprises deleting the data associated with the set of selected data records.

8. The method of claim 1, wherein the activities comprise neurologic activity, cardiac activity, respiratory activity, and body movement.

9. The method of claim 8, wherein multiple types of body movement are sensed, and wherein each type of body movement is a separate activity.

10. The method of claim 8, wherein multiple types of body movement are sensed, and wherein the multiple types are aggregated as one activity.

11. An implantable apparatus for reporting physiologic data of a plurality of neurologic events to an external component, comprising:

a processing component having logic for assigning severity to a plurality of activities and for assigning priority index for a data record of an event during which the plurality of activities occur, wherein the processing component is configured to;

determine the priority index for the data record of each neurologic event with the priority index depending upon the severity level respectively assigned to each of the plurality of activities occurring during the neurologic event,

select a set of data records from the plurality of data records for transferring to the external device, the selection based upon the data records of the selected set being higher in the priority index than the other data records of the plurality of data records, and

communicate a set of the selected data records from the implantable medical device to the external device via telemetry;

sensing circuitry configured to obtain a collection of data records about the plurality of activities occurring during the neurologic events; and

a telemetry module configured to communicate the selected data records to the external component via telemetry.

12. The implantable apparatus of claim 11, further comprising an external device configured to receive and display the data associated with the selected data records.