Integrated resuscitation

• US 8,744,573 B2
• Filed: 02/08/2005
• Issued: 06/03/2014
• Est. Priority Date: 02/04/2000
• Status: Expired due to Fees

• Current Assignee: Zoll Medical Corporation (Asahi Kasei Corporation)
• Original Assignee: Zoll Medical Corporation (Asahi Kasei Corporation)
• Inventors: Freeman, Gary A.
• Primary Examiner(s): MALAMUD, DEBORAH LESLIE
• Application Number:
  US11/054,705
• Publication Number:
  US 20050197672A1
• Time in Patent Office: 3,402 Days
• Field of Search: 600/509, 600/513, 600/515, 600/518, 600/519, 607 4- 6, 601/41
• US Class Current: 607/5
• CPC Class Codes: A61H 2031/002 fixed on the chest by adhesives
• CPC Class Codes: A61H 2201/10 with further special therapeutic means, e.g. electrotherapy, magneto therapy or radiation therapy, chromo therapy, infrared or ultraviolet therapy
• CPC Class Codes: A61H 2201/5007 computer controlled
• CPC Class Codes: A61H 2201/5043 Displays
• CPC Class Codes: A61H 2201/5048 Audio interfaces, e.g. voice or music controlled
• CPC Class Codes: A61H 2201/5061 Force sensors
• CPC Class Codes: A61H 2201/5084 Acceleration sensors
• CPC Class Codes: A61H 2230/207 partial O2-value
• CPC Class Codes: A61H 31/004 Heart stimulation
• CPC Class Codes: A61H 31/005 with feedback for the user
• CPC Class Codes: A61H 31/007 Manual driven
• CPC Class Codes: A61N 1/046 Specially adapted for shock therapy, e.g. defibrillation
• CPC Class Codes: A61N 1/0492 Patch electrodes A61N1/0412, A61N1/0428 take precedence
• CPC Class Codes: A61N 1/39044 in combination with cardiopulmonary resuscitation [CPR] therapy
• CPC Class Codes: A61N 1/3925 Monitoring; Protecting
• 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

A resuscitation system that includes at least two defibrillation electrodes configured to be applied to the exterior of the chest of a patient for delivering a defibrillation shock, a source of one or more ECG signals from the patient, a defibrillation circuit for delivering a defibrillation shock to the defibrillation electrodes, a control box that receives and processes the ECG signals to determine whether a defibrillation shock should be delivered or whether CPR should be performed, and that issues instructions to the user either to deliver a defibrillation shock or to perform CPR, wherein the determination of whether CPR should be performed and the instructions to perform CPR can occur at substantially any point during a rescue. The control box may include a user operable control for initiating delivery of a defibrillation shock, and the instructions to deliver a defibrillation shock include instructions to activate the user operable control. The user operable control may be a button configured to be pushed by the user. The determination of whether CPR should be performed and the instructions to perform CPR may occur before a determination to deliver any defibrillation shock. The source of the ECG signals may be the defibrillation electrodes. The defibrillation circuit may be contained in the control box.

Claims

1. A method for automatically delivering defibrillation shocks to a patient, comprising

applying electrodes to the chest of the patient for delivering a defibrillation shock to the patient and for detecting an ECG signal;

analyzing the ECG signal to determine if the cardiac rhythm is shockable (treatable by defibrillation therapy);

determining when pauses occur between CPR compressions while CPR is being delivered by analyzing the output of a compression-sensing or force-sensing element; and

performing the ECG analysis with ECG signal data primarily from pauses between CPR compressions.

2. The method of claim 1 further comprising delivering instructions to the user based on the outcome of the analysis of the ECG signal.

3. The method of claim 2 wherein the instructions include instructing the user to perform or to continue performing CPR.

4. The method of claim 1 further comprising delivering a defibrillation shock to the patient following analyzing the ECG signal.