Defibrillator
First Claim
1. A defibrillator comprising:
- a capacitor unit capable of temporarily storing and discharging sufficient energy to deliver a defibrillation shock to a patient;
a shock delivery circuit for discharging the capacitor unit to deliver the defibrillation shock; and
a valley switching flyback converter arranged to charge the capacitor unit.
2 Assignments
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Accused Products
Abstract
Several defibrillators, defibrillator architectures, defibrillator components and methods of operating defibrillators are described. In one aspect, a defibrillator (as for example an automated external defibrillator) that can be powered by a mobile communication device such as a smart cellular phone or a tablet computer is described. Utilizing a phone (or other mobile communication device) as the power supply for an external defibrillator allows the external defibrillator to be smaller and, in some circumstance, removes the need for a battery that stores sufficient energy for shock delivery—which would need to be checked and/or replaced on a regular basis. Additionally, when desired, certain control functionality, computation, data processing, and user instructions can be handled/presented by the mobile communications device thereby further simplifying the defibrillator design and improving the user experience. This architecture takes advantage of the nearly ubiquitous availability of smart phones, tablet computers and other mobile communication devices.
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Citations
24 Claims
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1. A defibrillator comprising:
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a capacitor unit capable of temporarily storing and discharging sufficient energy to deliver a defibrillation shock to a patient; a shock delivery circuit for discharging the capacitor unit to deliver the defibrillation shock; and a valley switching flyback converter arranged to charge the capacitor unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A defibrillation unit comprising:
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a capacitor unit capable of temporarily storing and discharging sufficient energy to deliver a defibrillation shock to a patient; a shock delivery circuit for discharging the capacitor unit to deliver the defibrillation shock; and a valley switching flyback converter for charging the capacitor unit, the flyback converter including a transformer and a variable maximum transformer current control circuit that controls a current level at which current to a primary coil in the flyback converter is turned off such that different maximum primary coil current levels may be set to facilitate charging the capacitor unit. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A defibrillator comprising:
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a capacitor for storing an electrical energy suitable for delivering a cardiac shock to a patient; a current sensor for sensing a current drawn from a power supply; voltage boosting circuitry configured to boost the voltage of electrical energy to charge the capacitor to a voltage suitable for delivery of the cardiac shock, the voltage boosting circuitry including a valley switching flyback converter and an input switch; a transitory electrical energy store located arranged to receive electrical energy from the power supply and to supply electrical energy to the voltage boosting circuitry; and a controller that receives a sensed input current from the current sensor and turns an input switch of the voltage boosting circuitry on and off to maintain the current drawn from the power source within a designated range, wherein when the input switch is turned off electrical current from the power supply charges the transitory electrical energy store and when the input switch is turned on electrical current flows to the voltage boosting circuitry from both the power supply and the transitory electrical energy store. - View Dependent Claims (23, 24)
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Specification