Oral airway and endotrachial monitor

• US 4,651,746 A
• Filed: 05/08/1984
• Issued: 03/24/1987
• Est. Priority Date: 05/08/1984
• Status: Expired due to Term

• Current Assignee: William H. Wall
• Original Assignee: William H. Wall
• Inventors: Wall, William H.
• Primary Examiner(s): Coven, Edward M.
• Application Number:
  US06/608,183
• Time in Patent Office: 1,050 Days
• Field of Search: 128/670, 128/671, 128/720, 128/748, 128/768, 128/787, 128/630, 128/638, 128/642, 128/716, 128/725, 128/734, 128/760, 128/719, 128/724, 128/784, 128/780, 128/207.15 , 128/204.12, 128/204.23
• US Class Current: 600/483
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/0096 High frequency jet ventilation
• CPC Class Codes: A61M 16/021 operated by electrical means A61M16/202 – A61M16/205 take precedence
• CPC Class Codes: A61M 16/04 Tracheal tubes catheters in general A61M25/00
• CPC Class Codes: A61M 16/0493 with means for protecting the tube from damage caused by the patient's teeth, e.g. bite block
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3379 Masses, volumes, levels of fluids in reservoirs, flow rates
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2230/06 Heartbeat rate only
• CPC Class Codes: A61M 2230/42 Rate
• CPC Class Codes: A61M 2230/50 Temperature

Abstract

A patient monitor for an airway or endotrachial tube having a liquid detector which alerts an operator to the presence of liquid in a patient'"'"'s throat. Vital signs sensors are also deployed on the appliance for sensing various body conditions. The fluid detector and the vital signs sensors are electricallly coupled to a microprocessor which operates numeric displays for the vital signs information and visual and audible alarms for the liquid detector and vital signs that are not normal or expected.

Claims

1. A patient monitor that is coupled to an airway, said monitor designed for alerting an operator to the presence of liquid in an airway when positioned in a patient'"'"'s throat;

said patient monitor comprising;

liquid detection means which generates a liquid signal upon detection of liquid;

a monitor means, comprising a microprocessor, in electrical communication with the liquid detection means for receiving the liquid signal and generating an electrical liquid alarm signal;

a liquid alarm means in electrical communication with the monitor means for receiving the liquid alarm signal whereby the liquid alarm means is actuated alerting an operator to the presence of liquid;

a respiration sensor, electrically coupled to the microprocessor, for sensing the respiration of a patient generating a respiration signal that is transmitted to the microprocessor, whereby the microprocessor formulates a respiration rate signal; and

a respiration rate display means, in electrical communication with the microprocessor for receiving the respiration rate signal and for alerting the operator as to a respiration rate for a patient.

2. A patient monitor as defined by claim 1 further comprising a pulse sensor which is electrically coupled to the microprocessor formulates a heart rate signal that is transmitted to a heart rate display means for alerting an operator as to the heart rate for a patient.

3. A patient monitor as defined by claim 2 further comprising a temperature sensor and a temperature display means, the temperature sensor electrically coupled to the microprocessor and senses the temperature of a patient generating a temperature signal that is transmitted to the microprocessor, the microprocessor transmits the temperature signal to the temperature display means for alerting an operator as to a temperature of a patient.

4. A patient monitor as defined by claim 3 wherein said liquid alarm means comprises a visual means for alerting an operator to the presence of liquid in a patient'"'"'s throat.

5. A patient monitor as defined by claim 4 wherein the liquid alarm means further comprises an audible alarm means for alerting an operator to the presence of liquid in a patient'"'"'s throat.

6. A patient monitor as defined by claim 5 wherein the liquid alarm signal comprises a first liquid alarm signal and a second liquid alarm signal, so that when liquid is first detected by the liquid detection means, the monitor means generates a first liquid alarm signal for the visual alarm means, after a specified period of time if liquid is still detected by the liquid detection means the monitor means generates a second liquid alarm signal which actuates the audible alarm means.

7. A patient monitor as defined by claim 6 wherein the respiratory rate display means, the heart rate display means and the temperature display means are numeric displays.

8. A patient monitor as defined by claim 7 wherein the numeric displays are liquid crystal displays.

9. A patient monitor as defined by claim 7 wherein the numeric displays are light emitting diodes.