Patient probe disconnect alarm

• US 5,924,985 A
• Filed: 07/29/1997
• Issued: 07/20/1999
• Est. Priority Date: 07/29/1997
• Status: Expired due to Term

• Current Assignee: Ohmeda, Inc. (Linde Plc)
• Original Assignee: Ohmeda, Inc. (Linde Plc)
• Inventors: Jones, Thomas C.
• Primary Examiner(s): Hindenburg, Max
• Assistant Examiner(s): WINGOOD, PAMELA LYNN
• Application Number:
  US08/902,043
• Time in Patent Office: 721 Days
• Field of Search: 600/390, 600/391, 600/392, 600/393, 600/534, 600/587, 600/549
• US Class Current: 600/390
• CPC Class Codes: A61B 5/252 by suction
• CPC Class Codes: A61B 5/276 Protection against electrode failure

Abstract

A patient probe disconnect alarm where the patient probe is provided with a vacuum that is formed in a chamber between the patient probe and the skin of the infant. The level of vacuum is monitored within the chamber and whenever the level of vacuum lessens beyond a predetermined vacuum level, the monitor senses a probe disconnect and provides an alert to the user that there is a loss of integrity in the probe affixation to the infant.

Claims

1. A patient probe disconnect warning system for an infant apparatus, said system comprising;

a patient probe adapted to be affixed to the skin of an infant, said patient probe forming a closed chamber against the skin of the infant,

means to draw a vacuum within said closed chamber;

means to monitor the level of vacuum drawn in said chamber,

a sensor adapted to determine when the level of vacuum monitored by the monitoring means raises above a predetermined level, and

alarm means adapted to alert the user when the vacuum has risen to the level sensed by said sensor.

2. A patient probe disconnect warning system for an infant apparatus as defined in claim 1 wherein said means to draw a vacuum comprises a collapsible bellows.

3. A patient probe disconnect warning system for an infant apparatus as defined in claim 1 wherein said sensor comprises a vacuum switch.

4. A patient probe disconnect warning system for an infant apparatus as defined in claim 1 wherein said patient probe includes a heat sensor.

5. An infant care apparatus for providing heat to an infant, said infant care apparatus comprising;

a heater to provide heat to the infant;

a patient probe adapted to be affixed to the skin of the infant, said patient probe comprising a temperature sensor adapted to sense the temperature of the skin of the infant, said probe further forming a closed chamber between said probe and the skin of the infant,

vacuum means to draw a vacuum in said chamber,

monitoring means to monitor the level of vacuum drawn in said closed chamber

alarm means adapted to alert the user when the level of vacuum monitored by said monitoring means lessens to a level above a predetermined vacuum level.

6. An infant care apparatus for providing heat to an infant as defined in claim 5 wherein said temperature sensor controls said heater.

7. An infant care apparatus for providing heat to an infant as defined in claim 5 wherein said closed chamber is annular and surrounds said temperature sensor.

8. An infant care apparatus for providing heat to an infant as defined in claim 5 wherein said source of vacuum comprises a collapsible bellows.

9. Vacuum in chamber aids if maintaining the probe affixed to the infant as defined in claim 5 wherein said vacuum source is a hospital regulated supply of vacuum.

10. A method of sensing the disconnection of a patient probe for determining the skin temperature of a patient, said method comprising the steps of:

providing a patient probe for affixation to a patient;

affixing the patient probe to a patient;

forming a chamber between the patient probe and the skin of the patient;

maintaining a vacuum in said chamber

monitoring the level of vacuum in the chamber

triggering an alarm when the level of vacuum increases to a level higher than a predetermined vacuum limit.