Defibrillator battery authentication system

• US 7,728,548 B2
• Filed: 06/02/2008
• Issued: 06/01/2010
• Est. Priority Date: 06/02/2008
• Status: Active Grant

• Current Assignee: Physio-Control Incorporated (Stryker Corporation)
• Original Assignee: Physio-Control Incorporated (Stryker Corporation)
• Inventors: Nova, Richard C., McGrath, Thomas J., Daynes, John C., Peterson, Kenneth J., Neumiller, James S.
• Primary Examiner(s): Tso; Edward
• Assistant Examiner(s): RAMADAN, RAMY O
• Application Number:
  US12/131,267
• Publication Number:
  US 20090295326A1
• Time in Patent Office: 729 Days
• Field of Search: 320/106, 320/114, 320/115, 320/166, 607/5
• US Class Current: 320/106
• CPC Class Codes: A61N 1/3925 Monitoring; Protecting
• CPC Class Codes: A61N 1/3975 Power supply A61N1/378 takes precedence
• CPC Class Codes: H01M 10/42 Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells H01M10/60 takes precedence
• CPC Class Codes: H01M 10/4221 with battery type recognition
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H02J 2310/23 The load being a medical device, a medical implant, or a life supporting device
• CPC Class Codes: H02J 7/0063 with circuits adapted for supplying loads from the battery
• CPC Class Codes: H02J 7/00712 the cycle being controlled or terminated in response to electric parameters
• CPC Class Codes: H02J 7/345 using capacitors as storage or buffering devices
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A method for operating an external medical device such as a defibrillator includes obtaining a data set from a battery pack and examining the data set to determine whether the battery pack is authenticated for use in the external medical device. If the examination does not confirm the authentication, the method includes causing the device to follow a non-authenticated battery pack protocol. The non-authenticated battery pack protocol may include drawing power from the non-authenticated battery pack only if it is the only available source of power for the external medical device. It may include limiting functionality of the external medical device. It may include modifying the battery status information display for the non-authenticated battery pack. A power system for an external medical device may include a power source external to the medical device and including a memory which stores data indicative of an authorized status of the power source and a processor in the medical device configured to analyze the data and to control a function of the medical device based at least in part on the authorization status.

Claims

1. A medical device that is capable of operating to defibrillate a patient according to a first protocol if a preset battery authentication is confirmed, and capable of operating to defibrillate the patient according to a second protocol different from the first protocol if the authentication is not confirmed, comprising:

a capacitor for storing an electrical charge that is to be delivered to the patient as part of defibrillating according to either the first protocol or the second protocol regardless of whether the authentication is confirmed;

a battery well for receiving a battery pack therein;

means for receiving a data set from the battery pack when the battery pack is in the battery well; and

a processor capable of recognizing whether the received data set confirms the authentication or not, in which

according to the first protocol, power is drawn from the battery pack even if the battery pack is not the only available source of power for the device, but

according to the second protocol, power is drawn from the battery pack only if the battery pack is the only available source of power for the device.

2. The medical device of claim 1, in which

a query is transmitted to the battery pack, and

the data set is received responsive to the query.

3. The medical device of claim 1, in which

the data set is received responsive to power-on of the device.

4. The medical device of claim 1, in which

the data set is received responsive to electrical engagement of the battery pack with the medical device as the battery pack is received in the well.

5. The medical device of claim 1, in which

the received data set is encrypted.

6. The medical device of claim 1, in which

according to the second protocol, it is further determined whether a power source alternative to the battery pack is coupled to the medical device.

7. The medical device of claim 1, in which

according to the first protocol, a first type of indication about a status of the battery pack is displayed at a screen of the device,

while according to the second protocol, a second type of indication different from the first type is displayed at the screen.

8. The medical device of claim 1, in which

while a functionality of defibrillating is operable according to both the first protocol and to the second protocol,

a certain functionality other than the functionality of defibrillating is operable according to the first protocol, but not according to the second protocol.

9. The medical device of claim 8, in which

the certain functionality is to monitor a parameter of the patient.

10. The medical device of claim 9, in which

the parameter includes one of capnography, pulse oximetry, non-invasive blood pressure, end tidal CO₂, ECG, invasive blood pressure, temperature, and CPR performance monitoring.

11. The medical device of claim 8, in which

the certain functionality is an information display functionality.

12. The medical device of claim 8, in which

the certain functionality is a synchronized cardioversion therapy.

13. The medical device of claim 8, in which

the certain functionality is a pacing therapy.

14. The medical device of claim 1, in which

the medical device exhibits a warning about the authentication not being confirmed when operating according to the second protocol, but not when operating according to the first protocol.

15. The medical device of claim 1, in which

according to the first protocol, the device has the capability of operating in both of a manual mode and an AED mode, but

according to the second protocol, the device has the capability of operating in the AED mode but not the manual mode.