Defibrillators detecting orientation of electrode connection to adjust energy dosage

• US 8,412,322 B2
• Filed: 07/25/2011
• Issued: 04/02/2013
• Est. Priority Date: 01/14/2011
• Status: Active Grant

• Current Assignee: Physio-Control Incorporated (Stryker Corporation)
• Original Assignee: Physio-Control Incorporated (Stryker Corporation)
• Inventors: Apperson, Ryan William, Daynes, John Carlton, Schneiderman, Kelly
• Primary Examiner(s): STOKLOSA, JOSEPH A
• Application Number:
  US13/190,241
• Publication Number:
  US 20120185006A1
• Time in Patent Office: 617 Days
• Field of Search: 607 5- 8
• US Class Current: 607/7
• CPC Class Codes: A61N 1/046 Specially adapted for shock therapy, e.g. defibrillation
• CPC Class Codes: A61N 1/3931 Protecting, e.g. back-up systems
• CPC Class Codes: A61N 1/3968 Constructional arrangements, e.g. casings A61N1/375 takes precedence
• CPC Class Codes: A61N 1/3987 characterised by the timing or triggering of the shock
• CPC Class Codes: A61N 1/3993 User interfaces for automatic external defibrillators

Abstract

Embodiments of the present concept are directed to external defibrillators that include an electrode connection port having multiple connection options, and include a detection device to determine an electrode connection configuration so as to provide an appropriate electrical shock to a patient. The detection device detects the electrode connection configuration of a plug connector for connected electrodes to determine if the plug connector is in an adult orientation or a pediatric orientation. The external defibrillator is configured to a deliver an electrical shock with less energy when the pediatric orientation is detected rather than the adult orientation.

Claims

1. An external defibrillator for use with electrodes having a plug connector with at least two active pins connected to the electrodes, the external defibrillator comprising:

an energy storage module for storing an electrical charge;

a defibrillation port for receiving the plug connector so as to guide via the electrodes at least a portion of the stored electrical charge to a patient, the defibrillation port structured to receive the plug connector in at least one of an adult orientation and a pediatric orientation different from the adult orientation, the defibrillation port having nodes for establishing electrical contact with the active pins for guiding the charge, a certain one of the nodes establishing electrical contact with one of the active pins in each of the adult orientation and the pediatric orientation;

an orientation detection device structured to detect whether the plug connector is connected to the defibrillation port in the adult orientation or in the pediatric orientation; and

a processor for determining when to guide the electrical charge portion, and

in which a portion of the charge corresponding to lesser defibrillation energy is guided via the electrodes if the pediatric orientation were detected than if the adult orientation were detected.

2. The external defibrillator of claim 1, further comprising:

a user interface for outputting an indication of the detected orientation.

3. The external defibrillator of claim 1, further comprising:

a user interface illustrating how the orientation can be changed according to whether the patient is an adult or a child.

4. The external defibrillator of claim 1, in which a first and a second of the active pins establish contact with a first and a second of the nodes respectively in the adult orientation, and the first and the second active pins establish contact with the second and the first nodes respectively in the pediatric orientation.

5. The external defibrillator of claim 1, in which the processor determines what portion of the charge should be guided via the electrodes according to the detected orientation.

6. The external defibrillator of claim 1, in which the orientation detection device is structured to sense a physical portion of the plug connector for detecting whether the plug connector is connected in the adult orientation or in the pediatric orientation.

7. The external defibrillator of claim 1, in which the orientation detection device includes a mechanical sensor for detecting whether the plug connector is connected in the adult orientation or in the pediatric orientation.

8. The external defibrillator of claim 1, in which the orientation detection device includes an electrical sensor for detecting whether the plug connector is connected in the adult orientation or in the pediatric orientation.

9. The external defibrillator of claim 1, in which the orientation detection device includes an electromechanical sensor for detecting whether the plug connector is connected in the adult orientation or in the pediatric orientation.

10. The external defibrillator of claim 1, in which the orientation detection device includes an optical sensor for detecting whether the plug connector is connected in the adult orientation or in the pediatric orientation.

11. The external defibrillator of claim 1, in which the orientation detection device includes a magnetic sensor for detecting whether the plug connector is connected in the adult orientation or in the pediatric orientation.

12. The external electrode of claim 1, in which a portion of the charge guided via the electrodes corresponds to a default defibrillation energy when the orientation detection device does not detect that the plug connector is connected in the adult orientation or in the pediatric orientation.

13. The external defibrillator of claim 1, in which

the plug includes at least one orientation indication pin in addition to the active pins, and

the orientation detection device is structured to detect whether the plug connector is connected in the adult orientation or in the pediatric orientation by sensing a location of the orientation indication pin with respect to the active pins.

14. The external defibrillator of claim 13, in which

the orientation detection device includes a circuit having at least two orientation detection leads for sensing the orientation indication pin of the plug, the circuit configured to detect the adult orientation when a first one of the orientation detection leads senses the orientation indication pin and configured to detect the pediatric orientation when a second one of the orientation detection leads senses the orientation indication pin.

15. The external defibrillator of claim 14, in which

the first and second orientation detection leads are structured to sense the orientation indication pin when a circuit pathway is completed with a reference pin.

16. The external defibrillator of claim 1, in which

a first and a second of the active pins establish contact with a first and a second of the nodes respectively in the adult orientation, and the first and the second active pins establish contact with the first node and a third node respectively in the pediatric orientation.

17. The external defibrillator of claim 16, in which

the defibrillation port includes a receptacle that prevents the first active pin from being received so as to make contact with the first node or the third node.

18. A method of determining an energy level for an electrical charge being guided from an external defibrillator to a patient through at least one electrode having a plug connector connected to a defibrillation port of the external defibrillator, the method comprising:

detecting one of more than one possible orientations of the plug connector in the defibrillation port; and

adjusting the energy level of the electrical charge guided by the external defibrillator based on the detected orientation of the plug connector.

19. The method of claim 18, further comprising:

outputting an indication of the detected orientation on a user interface of the external defibrillator.

22. The method of claim 18, in which detecting one of more than one possible orientations of the plug connector in the defibrillation port includes:

sensing a physical portion of the plug connector.

23. The method of claim 18, in which detecting one of more than one possible orientations of the plug connector in the defibrillation port includes:

determining a connection location for an orientation indication pin of the plug connector.

24. The method of claim 23, in which determining a connection location for an orientation indication pin of the plug connector includes:

determining which of at least two circuit pathways is completed by the orientation indication pin.

20. The method of 18, in which adjusting the energy level of the electrical charge guided by the external defibrillator based on the detected orientation of the plug connector further comprises:

adjusting the energy level of the guided electrical charge to a first level when the detected orientation of the plug connector corresponds to an adult patient; and

adjusting the energy level of the guided electrical charge to a second level less than the first level when the detected orientation of the plug connector corresponds to a pediatric patient.

21. The method of 18, in which adjusting the energy level of the electrical charge guided by the external defibrillator based on the detected orientation of the plug connector further comprises:

adjusting the energy level of the guided electrical charge to a default level when the detected orientation of the plug connector is not defined.

25. A method of operating an external defibrillator for use with electrodes having a plug connector with at least two active pins connected to the electrodes, the plug connector including at least one indication corresponding to a patient category, the method comprising:

determining whether the patient is in an adult patient category or a pediatric patient category;

orienting the plug connector so that the indication corresponds to the determined patient category; and

inserting the oriented plug in a defibrillation port of the external defibrillator.

26. The method of 25, further comprising:

confirming on a user interface of the defibrillator that the patient type corresponds to the orientation of the inserted plug connector.

27. The method of 25, further comprising:

activating an operation input on the external defibrillator to guide a portion of a stored electrical charge to the connected electrodes, in which the guided portion of electrical change corresponds to the orientation of the plug connector.