Medical notification apparatus and method

• US 7,724,147 B2
• Filed: 07/13/2006
• Issued: 05/25/2010
• Est. Priority Date: 07/13/2006
• Status: Active Grant

• Current Assignee: Carefusion 303 Incorporated (Becton, Dickinson & Co)
• Original Assignee: Cardinal Health 303 Incorporated (Cardinal Health, Inc.)
• Inventors: Brown, Houston
• Primary Examiner(s): La; Anh V
• Application Number:
  US11/485,932
• Publication Number:
  US 20080018435A1
• Time in Patent Office: 1,412 Days
• Field of Search: 340/573.1, 340/531, 340/286.07, 340/539.1, 600/300, 600/484, 600/507, 600/502, 600/528
• US Class Current: 340/573.1
• CPC Class Codes: G16H 40/20 for the management or administration of healthcare resources or facilities, e.g. managing hospital staff or surgery rooms
• CPC Class Codes: G16H 40/63 for local operation

Abstract

A medical notification apparatus and method for use with a preexisting healthcare facility nurse call system are disclosed. The apparatus sends a message signal to the healthcare facility call system when the apparatus receives and identifies an acoustic signal indicative of a medical device alarm or other parameter. The apparatus comprises an acoustic sensor, a signal processing unit, and an interface unit. A band pass filter, timing gate, and a processor are configured in one embodiment to process the received acoustic signal to identify an acoustic alarm. A memory device may be used to store a set of identification criteria for identifying a variety of acoustic alarms, and to store a set of message signals. The sent message signal is selected from among the stored set of message signals.

Claims

1. A medical notification apparatus comprising:

an acoustic sensor configured to generate a sensor signal in response to an acoustic alarm that is generated by a medical device and is indicative of a medical device parameter;

a signal processing unit in communication with the acoustic sensor and configured to generate an identification signal when the sensor signal from the acoustic sensor satisfies an identification criterion; and

an interface unit in communication with the signal processing unit and configured to send a message signal to a healthcare facility call system in response to the identification signal from the signal processing unit.

2. The apparatus of claim 1 wherein the signal processing unit comprises a signal conditioner having a level adjuster, the signal conditioner adapted to smooth the sensor signal.

3. The apparatus of claim 1 wherein the signal processing unit comprises a band pass filter.

4. The apparatus of claim 1 wherein the signal processing unit comprises a timing gate.

5. The apparatus of claim 1 wherein the signal processing unit comprises an active filter.

6. The apparatus of claim 1 wherein the signal processing unit comprises a processor adapted to execute a fast Fourier transform routine to analyze the sensor signal.

7. The apparatus of claim 1 wherein the identification criterion comprises a frequency band.

8. The apparatus of claim 1 wherein the identification criterion comprises a pulse pattern.

9. The apparatus of claim 1 wherein the interface unit comprises a switch configured to produce a contact closure in response to the identification signal from the signal processing unit.

10. The apparatus of claim 1 wherein the interface unit comprises a radio frequency transmitter configured to transmit a radio frequency signal to the healthcare facility call system in response to the identification signal from the signal processing unit.

11. The apparatus of claim 1 wherein the interface unit comprises a wireless transmitter and is configured to wirelessly transmit a signal to a portable communications device in response to the identification from the signal processing unit.

12. The apparatus of claim 1 wherein the interface unit comprises an Ethernet driver and is configured to transmit an electronic message to the healthcare facility call system in response to the identification signal from the signal processing unit.

13. The apparatus of claim 1 further comprising a memory unit associated with the signal processing unit and storing the identification criterion.

14. The apparatus of claim 1 further comprising a memory unit associated with the interface unit and storing a set of message signals, each one of the set of message signals associated with a different medical device alarm;

and wherein the message signal sent to the healthcare facility call system is selected from among the stored set of message signals.

15. A medical notification apparatus for use with a healthcare facility call system, the medical notification apparatus comprising:

an acoustic sensor configured to generate a sensor signal representative of an acoustic alarm received by the acoustic sensor, the acoustic alarm being generated by a medical device, and is associated with a medical device parameter;

a signal processing unit connected to the acoustic sensor and configured to store an identification criterion and to determine whether the sensor signal from the acoustic sensor satisfies the stored identification criterion; and

an interface unit connected to the signal processing unit and configured to send a message signal to the healthcare facility call system when the sensor signal from the acoustic sensor satisfies the stored identification criterion.

16. The apparatus of claim 15 further comprising a memory unit associated with the signal processing unit and the interface unit, the memory unit configured to a store set of identification criteria and a set of message signals, each one of the stored set of message signals associated with one of the stored set of identification criteria;

and wherein the message signal sent to the healthcare facility call system is selected from among the stored set of message signals.

17. A method of providing medical notification, the method of comprising:

sensing an acoustic alarm that is generated by a medical device and is indicative of a medical device parameter; and

sending a message signal from a medical notification apparatus to a healthcare facility call system in response to the medical notification apparatus identifying the acoustic alarm.

18. The method of claim 17 wherein sending the message from the medical notification apparatus comprises determining whether the acoustic alarm satisfies an identification criterion, and generating the message signal when the acoustic alarm satisfies the identification criterion.

19. The method of claim 17 wherein sending the message from the medical notification apparatus comprises determining whether the acoustic alarm satisfies an identification criterion from among a set of identification criteria, and generating the message signal from among a set of message signals when the acoustic alarm satisfies the identification criterion, each of the set of message signals associated with one of the set of identification criteria.

20. The method of claim 17 further comprising wirelessly transmitting a signal to a portable communications device in response to identifying the alarm.