Synchronization of defibrillation and chest compressions

A technology of defibrillation and defibrillator, which is applied in the field of medical devices and can solve problems such as beneficial effect assumptions

Active Publication Date: 2009-10-28
ZOLL MEDICAL CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, despite the availability of defibrillators and mechanical chest compressio

Method used

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  • Synchronization of defibrillation and chest compressions

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Embodiment Construction

[0015] The invention has many different embodiments, too many to be described here. Some possible embodiments that are presently preferred are described below. Although it cannot be overemphasized, these are exemplary descriptions of embodiments of the invention, not a description of the invention, and the invention is not limited to the detailed embodiments described in this section, but rather in broader terms in the claims to describe.

[0016] The discovery that a defibrillation shock should be synchronized with the early part of the decompression (diastolic) phase of chest compressions was partly a result of a new method developed by the inventors for testing the defibrillation threshold (DFT). When comparing the efficacy of a therapeutic intervention to an experimental control in an animal model, the DFT is measured separately for the treatment and control, and then the DFT levels are compared. The so-called DFT50 is the defibrillation energy for a specific therapy at ...

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Abstract

A resuscitation system for use by a rescuer for resuscitating a patient having a ventricular arrhythmia, comprising circuitry and processing configured for detection of chest compression/phase timing information indicative of the start of the decompression phase, circuitry and processing configured for delivery of eletromagnetic therapy for the termination of ventricular arrhythmias, wherein the circuitry and processing for the delivery of electromagnetic therapy utilizes the chest compression phase timing information to initiate delivery of the electromagnetic therapy within 300 milliseconds of the start of the decompression phase.

Description

[0001] cross reference [0002] This application claims priority to US Application Serial No. 61 / 001,347, filed November 1, 2007. technical field [0003] The present invention relates to the field of medical devices for cardiopulmonary resuscitation (CPR) and defibrillation, and more particularly to the synchronization of defibrillation shocks with chest compression cycles. Background technique [0004] There are many different types of abnormal heart rhythms, some of which can be treated with defibrillation therapy ("shockable rhythm") and some of which cannot be treated with defibrillation therapy ("non-shockable rhythm") . For example, most ECG rhythms that produce significant cardiac output are considered non-shockable (examples include normal sinus rhythm, certain bradycardias, and sinus tachycardia). There are also several abnormal ECG rhythms that do not result in substantial cardiac output but are still considered non-shockable because defibrillation therapy usual...

Claims

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Application Information

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IPC IPC(8): A61H31/00
CPCA61H31/007A61H2031/002A61H31/006A61H2201/5097A61H31/005A61N1/3987A61H2201/5084A61H2201/5048A61H2201/5007A61H2230/10A61H2201/5071A61H2201/5043
Inventor 加里·A·弗里曼
Owner ZOLL MEDICAL CORPORATION
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