Temperature and respiration sensing probe

• US 4,202,353 A
• Filed: 03/05/1979
• Issued: 05/13/1980
• Est. Priority Date: 02/22/1977
• Status: Expired due to Term

• Current Assignee: United States Surgical Corporation (Medtronic Plc)
• Original Assignee: United States Surgical Corporation (Medtronic Plc)
• Inventors: Rawson, Paul O., Hirsch, Leon C., Nagy, Louis E.
• Primary Examiner(s): Michell, Robert W.
• Assistant Examiner(s): Jaworski, Francis J.
• Application Number:
  US06/017,098
• Time in Patent Office: 435 Days
• Field of Search: 128/670, 128/671, 128/724-725, 128/736, 73/339 R, 73/343 R, 73/343 B, 73/344, 73/362 R, 73/362 AR, 73/374
• US Class Current: 600/537
• CPC Class Codes: A61B 5/0878 using temperature sensing means
• CPC Class Codes: A61B 5/097 Devices for facilitating collection of breath or for directing breath into or through measuring devices
• CPC Class Codes: G01F 1/68 by using thermal effects
• CPC Class Codes: G01F 1/6842 with means for influencing the fluid flow
• CPC Class Codes: G01K 13/20 Clinical contact thermometers for use with humans or animals

Abstract

A temperature and respiration sensing probe which eliminates any problems associated with orientation in relation to either a hygenic cover or insertion into the patient'"'"'s mouth. A means for sensing air movements caused by exhaled respiration is located and entirely housed inside the probe body and is caused to be in communication with the respiration by means of a large inlet aperture, which extends in a transverse direction through the entire probe body. One of the two inlet openings so formed is covered by the sheath. Exhaust ports are provided along the narrow edges of the rear of the probe body such that in using the probe, the operator'"'"'s fingers will not occlude or obstruct the exhaust.

Claims

1. A probe for use in sensing temperature and respiration comprising, an elongate housing portion having a rectangular cross-section, said housing having located therein a channel having first and second inlet apertures located in top and bottom surfaces, respectively, of said rectangular cross-section housing, said top and bottom surfaces being on the longer sides of said rectangular cross-section, said channel extending transversely through the entire housing from top to bottom, a tubular rod portion mounted on one end of said elongate housing, said housing and said tubular rod portion being constructed and arranged so as to be symmetrical about their longitudinal axis, temperature sensing means mounted on the end of said tubular rod distal to said housing for insertion into the mouth, respiration sensing means mounted inside said housing and in communication with said channel, wherein one of said first and second inlet apertures is positioned on said housing to be in the path of nasal airflow when said probe is inserted in the mouth.

2. The probe of claim 1 wherein said temperature sensing means and said respiration sensing means each comprise a thermistor.

3. The probe of claim 1 further comprising a conically tapered metallic cap affixed to the end of said tubular rod such that said metallic cap completely covers said temperature sensing means.

4. The probe of claim 1 further comprising at least one exhaust port located substantially towards the rear of said housing and in communication with said channel.

5. The probe of claim 1 wherein said housing portion is provided with a tapered portion in the vicinity of the connection with said tubular rod and wherein a top surface of said housing in said connection vicinity is substantially flat.

6. The probe of claim 5 wherein two exhaust ports are provided located in the narrower sides of said housing and communicating with said channel.

7. The probe of claim 6 further comprising a through passageway for said communication between said channel and said exhaust ports and wherein said respiration means is located within said through passageway.

8. The probe of claim 7 comprising means arranged adjacent to said housing for obstructing one of said first and second inlet apertures of said channel, thereby creating a wind tunnel to force said nasal airflow into said through passageway over said respiration sensing means and out said two exhaust ports.