Ambulatory repeater for use in automated patient care

• US 7,967,751 B2
• Filed: 08/17/2007
• Issued: 06/28/2011
• Est. Priority Date: 04/22/2005
• Status: Active Grant

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Srivathsa, Muralidharan, Johnson, David C., Haeder, Lisa D., Brockway, Marina, Kadhiresan, Veerichetty A., Goscha, Donald L.
• Primary Examiner(s): Johnson, III; Henry M
• Assistant Examiner(s): Rajan; Kai
• Application Number:
  US11/893,704
• Publication Number:
  US 20070288069A1
• Time in Patent Office: 1,411 Days
• Field of Search: 600/300, 600/301, 128903-905, 128/920
• US Class Current: 600/300
• CPC Class Codes: A61B 5/0031 Implanted circuitry

Abstract

An ambulatory repeater for use in automated patient care is presented. A local memory store includes a cryptographic key, sensitive information, and physiological measures. The cryptographic key is uniquely assigned to the implantable medical device prior to implant of the implantable medical device into a patient. The sensitive information is preencrypted under the cryptographic key and physiological measures are measured by the implantable medical device. An authentication module is in receipt of the cryptographic key. A permissions module confirms authorization of an external data processing device against the cryptographic key. A decryption module decrypts the sensitive information with the cryptographic key into decrypted information. A processor is operatively coupled to the local memory store. A communications module exchanges the decrypted information and the physiological measures with the external data processing device over a wireless interface contingent upon the authorization confirmation. An internal power supply supplies power to the foregoing components.

Claims

1. A secure wireless ambulatory repeater system, comprising:

an implantable medical device comprising a secure key repository for maintaining one or more cryptographic keys; and

a secure wireless ambulatory repeater comprising;

a memory for storing sensitive information preencrypted under a cryptographic key and physiological measures measured by the implantable medical device;

an authentication module to securely obtain the cryptographic key from the secure key repository of the implantable medical device;

a processor comprising;

a decryption module to decrypt the sensitive information with the cryptographic key into decrypted information; and

a communications module to exchange the decrypted information and the physiological measures with an external data processing device over a wireless interface contingent upon authorization of the external data processing device;

wherein the ambulatory repeater is consists of one of a wearable or handheld form factor.

2. An ambulatory repeater according to claim 1, further comprising:

a telemetry interface to the implantable medical device over which the cryptographic key, the sensitive information, and the physiological measures are securely received.

3. An ambulatory repeater according to claim 2, wherein the telemetry interface operates over at least one of inductive telemetry, radio frequency telemetry, and Bluetooth telemetry.

4. An ambulatory repeater according to claim 1, wherein the cryptographic key is maintained in a key escrow.

5. An ambulatory repeater according to claim 1, wherein the physiological measures are measured by a sensor comprised in the implantable medical device.

6. An ambulatory repeater according to claim 1, further comprising:

an activation module to transition the ambulatory repeater from a standby mode; and

a standby module to transition the ambulatory repeater from an active mode.

7. An ambulatory repeater according to claim 6, wherein the activation module is at least one of internally triggered by at least one of a schedule, an alert condition, and a manual override, and remotely triggered by the external data processing device.

8. An ambulatory repeater according to claim 1, wherein the physiological measures comprises one or more of physiological and behavioral data.

9. An ambulatory repeater according to claim 1, wherein the external data processing device is selected from the group comprising a server, personal computer, repeater, and programmer.

10. An ambulatory repeater system for use in automated patient care, comprising:

an implantable medical device comprising a secure key repository for maintaining one or more cryptographic keys; and

an ambulatory repeater comprising;

a local memory store, comprising;

a cryptographic key uniquely assigned to an implantable medical device; and

sensitive information preencrypted under the cryptographic key and physiological measures measured by the implantable medical device;

a processor operatively coupled to the local memory store, comprising;

an authentication module to receive the cryptographic key from the implantable medical device, further comprising;

a permissions module to confirm authorization of an external data processing device against the cryptographic key; and

a decryption module to decrypt the sensitive information with the cryptographic key into decrypted information; and

a communications module to exchange the decrypted information and the physiological measures with the external data processing device over a wireless interface contingent upon the authorization confirmation; and

an internal power supply to supply power to the foregoing components;

wherein the ambulatory repeater is selected from the group consisting of a wearable form factor and a handheld form factor.

11. An ambulatory repeater system according to claim 10, wherein the processor further comprises one or more of:

an analysis module, which includes functionality comprising one or more of analysis, translation, interpretation, and display of the decrypted information and the physiological measures;

a schedule module to control periodic exchange of the sensitive information and the physiological measures with the implantable medical device and the external data processing device; and

an override module to control on-demand interrogation of the implantable medical device.

12. An ambulatory repeater system according to claim 10, wherein the wireless interface is selected from the group comprising radio frequency telemetry and cellular telemetry.

13. An ambulatory repeater system according to claim 10, wherein the physiological measures are selected from the group comprising pulse, blood pressure, glucose level, sweat, patient ambulatory activities, weight, salinity, cumulative totals of sensed and paced events, transmission of electrograms, pacing, cardiac health information monitoring, alert condition detection, impending therapy resynchronization, defibrillation, neural stimulation, and drug delivery measures.

14. An ambulatory repeater system according to claim 10, the ambulatory repeater further comprising:

a user operable interface, comprising;

user-operable input controls, which are selected from the group comprising a keyboard, a pointing device, a microphone, and a button array; and

user-perceptible output devices, which are selected from the group comprising a display, a speaker, and a tactile feedback generator.

15. An ambulatory repeater system according to claim 10, the ambulatory repeater further comprising:

an alarm generator comprising a trigger, which is tripped whenever one or more of a health-based condition and a device-specific circumstance occurs.

16. An ambulatory repeater system according to claim 10, wherein the internal power supply is selected from the group comprising a rechargeable battery and a replaceable battery.