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US-12623086-B2 - System for multiple defibrillation therapies

US12623086B2US 12623086 B2US12623086 B2US 12623086B2US-12623086-B2

Abstract

A defibrillation system for the administration of a dual sequential defibrillation and/or simultaneous defibrillation therapy. A first defibrillation device is inductively coupled to a second defibrillation device. An energy delivery of the first defibrillation device generating, or causing to be generated, an artifact that is received by the second defibrillation device. The artifact causing a sync mode, or sync mode circuitry, of the second defibrillation device to administer a second energy delivery. The second energy delivery can be delayed relative to the energy delivery by the first defibrillation device.

Inventors

  • Gary Debardi
  • Fred W. Chapman
  • Tyson G. Taylor
  • Ronald E. Stickney

Assignees

  • PHYSIO-CONTROL, INC.

Dates

Publication Date
20260512
Application Date
20230329

Claims (19)

  1. 1 . A modifier coupled to a first defibrillation device and to a second defibrillation device, wherein the modifier is configured to: receive, from the first defibrillation device, a signal indicating an output of a first electrical shock by the first defibrillation device; and in response to receiving the signal, cause the second defibrillation device to output a second electrical shock.
  2. 2 . The modifier of claim 1 , wherein the modifier is inductively coupled to the first defibrillation device and is inductively coupled to the second defibrillation device.
  3. 3 . The modifier of claim 1 , wherein the modifier comprises a diode bridge electrically connected, in parallel, with a capacitor.
  4. 4 . The modifier of claim 3 , wherein the diode bridge and the capacitor are connected, in parallel, with the first defibrillation device and the second defibrillation device.
  5. 5 . The modifier of claim 1 , wherein the modifier comprises an active circuit that is powered by a power source.
  6. 6 . The modifier of claim 1 , wherein the modifier is inductively coupled to the second defibrillation device.
  7. 7 . A system, comprising: a first conductor connecting a first defibrillator to a first electrode; a second conductor connecting a second defibrillator to a second electrode; and a device comprising a first part and a second part, the first conductor being wrapped around the first part, the second conductor being wrapped around the second part and being inductively coupled to the first conductor.
  8. 8 . The system of claim 7 , wherein the first part is cylindrical and has a first radius, wherein the second part is cylindrical and has a second radius, the second part at least partially enclosing a space, the second radius being longer than the first radius, and wherein the first part is disposed in the space.
  9. 9 . The system of claim 8 , further comprising a notch in a rim of the first part, wherein the first conductor is partially disposed in the notch.
  10. 10 . The system of claim 7 , wherein the device further comprises a hinge connecting the first part and the second part.
  11. 11 . The system of claim 10 , wherein the first part and the second part are folded over each other by the hinge.
  12. 12 . The system of claim 7 , wherein a first electrical shock is output by the first defibrillator via the first conductor and a second electrical shock is output by the second defibrillator via the second conductor.
  13. 13 . The system of claim 12 , wherein the first electrical shock output via the first conductor generates an artifact in the second conductor, and wherein the artifact causes the second defibrillator to output the second electrical shock.
  14. 14 . A device configured to inductively couple a first connector and a second connector, the first connector being connected to a first defibrillator, the second connector being connected to a second defibrillator.
  15. 15 . The device of claim 14 , comprising: a first part configured to be wrapped with the first connector; and a second part configured to be wrapped with the second connector.
  16. 16 . The device of claim 15 , wherein the first part is cylindrical and has a first radius, wherein the second part is cylindrical and has a second radius, the second part at least partially enclosing a space, the second radius being longer than the first radius, and wherein the first part is disposed in the space.
  17. 17 . The device of claim 16 , further comprising a notch in a rim of the first part, wherein a first conductor is partially disposed in the notch.
  18. 18 . The device of claim 15 , wherein the device further comprises a hinge connecting the first part and the second part.
  19. 19 . The device of claim 14 , further configured to: couple a first connector to a third connector, the third connector being connected to a first electrode; and couple a second connector to a fourth connector, the fourth connector being connected to a second electrode.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. application Ser. No. 16/833,259, filed Mar. 27, 2020, which is a continuation of U.S. application Ser. No. 15/788,704, filed Oct. 19, 2017, which claims the benefit of U.S. Provisional Patent Application Ser. No. 62/410,290, filed on Oct. 19, 2016, the contents of each of which are herein incorporated by reference in their entirety. BACKGROUND Double sequential defibrillation (DSD) or simultaneous/near simultaneous defibrillation is a treatment protocol that is growing in use and popularity to treat patients suffering from cardiac arrest. For a patient in ventricular fibrillation, and especially for a patient suffering from refractory ventricular fibrillation, the use of DSD or simultaneous defibrillation may be an effective treatment in helping restore the patient's normal heart rhythm. Conventionally, DSD has been performed as a last ditch effort to try and save the life of a patient suffering a difficult-to-terminate cardiac arrhythmia. The administration of DSD has been haphazard, poorly timed, and uncoordinated. Typically, DSD or simultaneous defibrillation is administered using two separate and distinct defibrillators, such as two monitor/defibrillators (sometimes referred to as manual defibrillators), or two automated external defibrillators (AEDs), or a monitor/defibrillator and an AED. Human rescuers manually time the two (or more) defibrillation shocks to be delivered to the patient at the correct time but the time precision with which the shocks must be delivered for effective treatment is likely greater that what can be achieved manually. Relying on human ability and/or judgement to administer shocks from two separate defibrillators in a coordinated manner is an imperfect system that results in questionable therapy outcomes due to improper shock delivery timing. Improper timing of the shock delivery can potentially lengthen the amount of time a patient experiences cardiac arrest with ventricular fibrillation or can potentially cause fatal additional arrhythmias to the patient's heart (for example, inducing ventricular fibrillation while attempting to treat atrial fibrillation). DSD and simultaneous defibrillation is becoming more widely adopted for patients suffering from cardiac arrest. The art would benefit from systems and/or methods for assisting in proper delivery of such therapies with precise timing control and reproducible timing of multiple shock deliveries. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram of a scene where an external defibrillator is used to save the life of a person according to embodiments. FIG. 2 is a table listing two main types of the external defibrillator shown in FIG. 1, and who they might be used by. FIG. 3 is a functional block diagram showing components of an external defibrillator, such as the one shown in FIG. 1. FIG. 4 is an example system for delivering multiple defibrillation therapies. FIG. 5 is a further example system for delivering multiple defibrillation therapies. FIG. 6 is yet another example system for delivering multiple defibrillation therapies. FIG. 7 is an example circuit diagram of a modifier for use with a system for delivering multiple defibrillation therapies. FIG. 8 is another example circuit diagram of a modifier for use with a system for delivering multiple defibrillation therapies. FIG. 9 is an example process for administering multiple defibrillation therapies. FIG. 10 is an example flow chart showing administration of multiple defibrillation therapies. FIG. 11 shows example hardware for intertwining wires. FIG. 12 is another example of hardware for intertwining wires. FIG. 13 is yet another example hardware for intertwined wires. SUMMARY An example medical device can include a therapy module that is configured to output an energy delivery, such as a defibrillation shock. The medical device can also include sync mode circuitry that is coupled to the therapy module and configured to receive a generated artifact. The generated artifact can be indicative of a first energy delivery and the sync mode circuitry can generate an instruction for the therapy module to discharge a second energy delivery from the therapy module. In an example embodiment, the generated artifact can be substantially similar to a patient physiological parameter. In a further example embodiment, the generated artifact can be an electromagnetic artifact. In another example, the electromagnetic artifact can be generated by the first energy delivery from another medical device and the electromagnetic artifact is included in the first energy delivery. In a further example, a first electrode can be electrically connected to the therapy module by a first wire and a second electrode can be connected to another device by a second wire. The first and second wire can be at least partially intertwined such that the electromagnetic artifact is received by the first wire from the second wire