Automated pediatric defibrillator

• US 8,738,130 B2
• Filed: 04/12/2005
• Issued: 05/27/2014
• Est. Priority Date: 04/12/2004
• 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., Elghazzawi, Ziad F., Geheb, Frederick J., Parascandola, Michael
• Primary Examiner(s): Koharski, Christopher D
• Assistant Examiner(s): D ABREU, MICHAEL JOSEPH
• Application Number:
  US11/104,272
• Publication Number:
  US 20050267536A1
• Time in Patent Office: 3,332 Days
• Field of Search: 607 1- 3, 607 5- 8, 601 41- 44, 600/508, 600/509, 600/522, 600/523
• US Class Current: 607/8
• CPC Class Codes: A61B 5/4836 Diagnosis combined with treatment in closed-loop systems or methods A61B5/0036 takes precedence
• 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 1/3906 characterised by the form of the shockwave
• CPC Class Codes: A61N 1/3918 characterised by shock pathway, e.g. by electrode configuration
• CPC Class Codes: A61N 1/3925 Monitoring; Protecting
• CPC Class Codes: A61N 1/3968 Constructional arrangements, e.g. casings A61N1/375 takes precedence
• CPC Class Codes: A61N 1/3993 User interfaces for automatic external defibrillators

Abstract

A device for assisting a rescuer in delivering therapy to an adult or pediatric patient, the device including a user interface comprising a display and/or audio speakers, the user interface being configured to deliver prompts to a rescuer to assist the rescuer in delivering therapy to a patient; a processor configured to provide prompts to the user interface and to perform an ECG analysis algorithm on ECG information detected from the patient; at least one detection element configured to determine without rescuer input via the user interface that a pediatric patient is being treated; wherein, if a pediatric patient is detected, the processor modifies the ECG analysis algorithm or the prompts provided to the user interface to use an ECG analysis algorithm or prompts adapted for a pediatric patient rather than for an adult patient.

Claims

1. A device for assisting a rescuer in delivering therapy to an adult or pediatric patient, the device comprising

a user interface comprising a display and/or audio speakers, the user interface being configured to deliver prompts to a rescuer to assist the rescuer in delivering therapy to a patient;

a processor configured to provide prompts to the user interface and to perform an ECG analysis algorithm on ECG information detected from the patient;

at least one detection element configured to make a determination without rescuer input via the user interface that a pediatric patient is being treated, wherein the detection element is configured to make the determination based on the output of a force or pressure sensor for sensing force or pressure from the weight of the patient;

wherein if the determination is that a pediatric patient is being treated, the processor modifies the ECG analysis algorithm to use an ECG analysis algorithm configured for a pediatric patient rather than for an adult patient.

2. The device of claim 1 further comprising an automatic external defibrillator for delivering defibrillation shocks to the patient using defibrillation electrodes applied to the patient.

3. The device of claim 2 wherein the detection element comprises circuitry for detecting whether a pediatric or an adult defibrillation electrode is in use.

4. The device of claim 2 wherein the force or pressure sensor is located on a shoulder support element.

5. The device of claim 4 wherein the shoulder support element comprises a removable cover of the device.

6. The device of claim 1 wherein the energy of defibrillation shocks is determined based in part on information as to the patient'"'"'s weight obtained from the force or pressure sensor.

7. The device of claim 1 wherein modifications to the ECG analysis algorithm include one or more of the following:

heart rate criteria, QRS width criteria, VF frequency content criteria, or ECG amplitude criteria.

8. The device of claim 1 wherein the processor further modifies prompts, including changing a sequence of prompts, a number of prompts, or a type of prompts.

9. The device of claim 1 wherein the processor further modifies prompts, and wherein the prompts include prompts on CPR compression and CPR ventilation, and the compression-ventilation ratio is about 5:

1 for pediatric patients and about 15;

2 for adult patients.

10. The device of claim 1 wherein the processor further modifies prompts, and wherein the prompts include prompts on CPR compression depth, and the desired compression depth for pediatric patients is in the range of about 1.0 to 1.5 inches, and the desired compression depth for adult patients is in the range of about 1.0 to 2.0 inches.

11. The device of claim 1 wherein the processor further modifies prompts, and wherein the prompts include a prompt informing the rescuer as to whether the device is operating in an adult or pediatric mode.

12. The device of claim 1 wherein the processor further modifies prompts, and wherein the prompts include prompting of the CPR interval T1 based on one or more of patient rhythm, age, or weight.

13. The device of claim 1 wherein the processor further modifies prompts, and further comprising one or more sensors and prompts for detecting and prompting the user to achieve a complete chest release during CPR.

14. The device of claim 1 wherein the processor further modifies prompts, and wherein the prompts include pediatric specific prompts for the compression rate R1.

15. The device of claim 1 wherein the processor further modifies prompts, and wherein the prompts include adult specific prompts for the compression rate R1.

16. The device of claim 4 wherein the information from sensors in the shoulder support element is communicated to the defibrillator by one or more of the following techniques:

by a wire extending from the support to the defibrillator, or by a wireless communication connection between the support and the defibrillator.