Cardiac resuscitation with prompting and defibrillation in separate units and with an activity sensor for detecting patient initiated movement

• US 9,750,453 B2
• Filed: 02/11/2014
• Issued: 09/05/2017
• Est. Priority Date: 09/30/2004
• Status: Active Grant

• Current Assignee: Zoll Medical Corporation (Asahi Kasei Corporation)
• Original Assignee: Zoll Medical Corporation (Asahi Kasei Corporation)
• Inventors: Freeman, Gary A., Totman, Mark
• Primary Examiner(s): CAREY, MICHAEL JAMES
• Application Number:
  US14/177,520
• Publication Number:
  US 20140155787A1
• Time in Patent Office: 1,302 Days
• Field of Search: 607 5, 607 6, 607 62
• CPC Class Codes: A61B 5/02438 with portable devices, e.g. worn by the patient
• CPC Class Codes: A61B 5/0245 by using sensing means generating electric signals, i.e. ECG signals
• CPC Class Codes: A61B 5/1116 Determining posture transitions
• CPC Class Codes: A61B 5/1118 Determining activity level
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/346 Analysis of electrocardiograms
• CPC Class Codes: A61B 5/4836 Diagnosis combined with treatment in closed-loop systems or methods A61B5/0036 takes precedence
• CPC Class Codes: A61B 5/7282 Event detection, e.g. detecting unique waveforms indicative of a medical condition A61B5/4094, A61B5/4818, A61B5/349, A61B5/0823 take precedence
• CPC Class Codes: A61B 7/02 Stethoscopes acoustic details thereof G10K11/00
• CPC Class Codes: A61H 2031/002 fixed on the chest by adhesives
• 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 2201/5097 wireless
• CPC Class Codes: A61H 2230/04 Heartbeat characteristics, e.g. E.G.C., blood pressure modulation
• CPC Class Codes: A61H 2230/207 partial O2-value
• 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 1/0472 : Structure-related aspects
• CPC Class Codes: A61N 1/0492 : Patch electrodes A61N1/0412, A61N1/0428 take precedence
• CPC Class Codes: A61N 1/3625 : External stimulators
• CPC Class Codes: A61N 1/37288 : Communication to several implantable medical devices within one patient
• CPC Class Codes: A61N 1/39044 : in combination with cardiopulmonary resuscitation [CPR] therapy
• CPC Class Codes: A61N 1/39046 : User protection from shock
• 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

A resuscitation system comprising at least two high-voltage defibrillation electrodes; a first electrical unit comprising circuitry for providing resuscitation prompts to the rescuer; a second electrical unit separate from the first unit and comprising circuitry for providing defibrillation pulses to the electrodes; circuitry for providing at least one electrical connection between the first and second units, an activity sensor adapted to be worn by the patient and capable of providing an output from which the patient'"'"'s current activity can be estimated, wherein the patient'"'"'s current activity comprises overall body activity rather than cardiac activity; and at least one processor configured for estimating the patient'"'"'s current activity by analyzing the output of the activity sensor.

Claims

1. A resuscitation system for use by a rescuer for resuscitating a patient, comprising:

at least two high-voltage defibrillation electrodes;

a first electrical unit comprising circuitry for providing resuscitation prompts to the rescuer;

a second electrical unit separate from the first unit and comprising circuitry for providing defibrillation pulses to the electrodes;

a circuitry for providing at least one electrical connection between the first and second units;

an activity sensor adapted to be worn by the patient and capable of providing an output from which a patient initiated current activity can be estimated, wherein the patient initiated current activity comprises overall body activity rather than cardiac activity; and

at least one processor configured for estimating the patient initiated current activity by analyzing the output of the activity sensor.

2. The resuscitation system of claim 1 wherein the at least one processor is located in the first unit.

3. The resuscitation system of claim 2 wherein at least some of the resuscitation prompts delivered by the first unit are dependent on the estimated patient initiated current activity.

4. The resuscitation system of claim 3 wherein the patient initiated current activity comprises whether the patient is lying on his back, and at least one resuscitation prompt issued when the patient is not on his back is an instruction to roll the patient on their back prior to beginning CPR.