US3884219A - System for determining temperature and respiration rate - Google Patents

System for determining temperature and respiration rate Download PDF

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Publication number
US3884219A
US3884219A US346952A US34695273A US3884219A US 3884219 A US3884219 A US 3884219A US 346952 A US346952 A US 346952A US 34695273 A US34695273 A US 34695273A US 3884219 A US3884219 A US 3884219A
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United States
Prior art keywords
temperature
respiration
patient
probe
responsive means
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US346952A
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English (en)
Inventor
Philip C Richardson
Emmett L Hudspeth
Jr Allen D Boger
Jerald P Dykstra
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Medical Monitor Systems Inc
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Medical Monitor Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Medical Monitor Systems Inc filed Critical Medical Monitor Systems Inc
Priority to US346952A priority Critical patent/US3884219A/en
Priority to CA192,334A priority patent/CA1006715A/en
Priority to SE7401978A priority patent/SE389601B/xx
Priority to GB1094474A priority patent/GB1429122A/en
Priority to JP2865374A priority patent/JPS5716811B2/ja
Priority to DE2413621A priority patent/DE2413621C2/de
Priority to FR7411573A priority patent/FR2222988B1/fr
Application granted granted Critical
Publication of US3884219A publication Critical patent/US3884219A/en
Priority to CA251,305A priority patent/CA1000523A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
    • A61B5/02055—Simultaneously evaluating both cardiovascular condition and temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Measuring devices for evaluating the respiratory organs
    • A61B5/0816—Measuring devices for examining respiratory frequency

Definitions

  • a system for determining the temperature and the respiration rate of a patient comprises an elongate cylindrical probe.
  • a thermistor is supported in the tip of the probe for positioning in the mouth of a patient to generate an output signal indicative of the patients temperature.
  • a respiration transducer is supported on the probe in the path of air exhaled through the nose of the patient and functions to generate an output signal indicative of the patients respiration rate.
  • a disposable cover is provided for enclosing the probe during use.
  • the cover includes a plastic body extending to a metal tip which engages the thermistor to promote heat transfer thereto. and a cup-shaped member supported on the body for directing air exhaled by the patient across the respiration transducer.
  • the present invention relates to an electronic system for simultaneously determining the temperature and the respiration rate of a patient.
  • an elongate probe having suitable dimensions for positioning in the mouth of a patient.
  • a temperature responsive member is mounted at the tip of the probe and is therefore adapted to produce an output indicative of the temperature of the patient.
  • a respiration responsive member is mounted on the probe at a point displaced from the tip.
  • the respiration responsive member is therefore positioned in the path of air exhaled through the nose of the patient. By this means the respiration responsive member produces an output indicative of the respiration rate of the patient.
  • the probe is enclosed during use by a removable cover which is disposable or at least semi-disposable.
  • the cover includes a plastic body extending to a metal tip which contacts the temperature responsive member. The temperature responsive member is therefore actuated by heat transfer through the disposable cover.
  • a cup-shaped member is supported on the body of the cover and includes a cylindrical portion which receives the respiration responsive member. The cup-shaped member functions to direct air exhaled through the nose of the patient across the respiration responsive member.
  • FIG. 1 is an illustration of an electronic medical data acquisition system utilizing the invention
  • FIG. 2 is an illustration of the use of the invention
  • FIG. 3 is a perspective view of a system for determining temperature and respiration rate incorporating a first embodiment of the invention
  • FIG. 4 is a top view of a system for determining temperature and respiration rate incorporating a second embodiment of the invention
  • FIG. 5 is a sectional view taken generally along the line 5-5 in FIG. 4 in the direction of the arrows;
  • FIG. 6 is a sectional view of the first embodiment of the invention.
  • FIG. 7 is an enlarged illustration of certain features of the second embodiment of the invention.
  • FIG. 8 is an enlargement of a portion of FIG. 6.
  • the data acquisition system 10 includes a data display and recording unit 12 comprising a plurality of control keys 14 and a data display screen 18.
  • a temperature and respiration rate determining system 20 incorporating the present invention is connected to the display and recording unit 12 by a cable 22.
  • a pulse rate determining system 24 is connected to the display and recording unit 12 by a cable 26.
  • the temperature and respiration rate determining system 20 is utilized to generate signals indicative of the temperature and the respiration rate of the patient. These signals are fed to the display and recording unit 12 through the cable 22.
  • the pulse rate determining system 24 is utilized to generate signals indicative of the pulse rate of the patient. These signals are fed to the display and recording unit 12 through the cable 26.
  • the signals generated by the temperature and respiration rate determining system 20 and by the pulse rate determining system 24 are converted to temperature, respiration, and pulse rate information.
  • This information is stored within the data display and recording unit 12, and is displayed on the display screen 18 thereof either automatically or by actuating appropriate control keys 14.
  • the data display and recording unit 12 is further adapted to transfer the stored data to associated computing and/or recording equipment, whereby the data may be further processed, etc.
  • the system 30 comprises an elongate probe 32 including a holder 34.
  • a barrel 36 is slidably received in the holder 34 and is biased outwardly by a spring 38.
  • a tube 40 extends rearwardly from the barrel 36 to a handle 42 having a cap 44 received therein.
  • the component parts of the probe 32 other than the tube may be formed from a suitable plastic such as Delrin, Lexan," polystyrene, etc., and the tube 40 may be formed from stainless steel, or the like.
  • a first transducer 45 is mounted in the end of the barrel. 36 of the probe 32 remote from the handle 42.
  • the transducer 45 is enclosed by a metal cover 46 which projects from the end of the barrel 36 to define the tip of the probe 32.
  • a second transducer 48 is mounted in the barrel 36 at a point substantially displaced from the tip of the probe 32.
  • the transducer 48 extends angularly upwardly relative to the remaining components of the probe 32.
  • the transducers 45 and 48 are both connected to a cable 50 extending through the barrel 36, the tube 40, the handle 42, and the cap 44, and serving to connect the transducers 45 and 48 to associated apparatus, for example, the data display and recording unit 12 illustrated in FIG. 1.
  • the first transducer 45 is preferably a temperature sensitive transducer, and as such may comprise a thermistor or other temperature sensitive component.
  • the second transducer may also comprise a temperature sensitive transducer, if desired.
  • the transducer may also comprise apparatus responsive to the moisture content of the breath, apparatus responsive to pressure exerted by exhaled breath, etc.
  • the temperature and respiration rate determining system 30 further includes a probe cover 52.
  • the cover 52 is removable, and preferably is disposable, i.e., adapted for one-time use only, or at least semidisposable, i.e., adapted for use by a single patient only.
  • the cover 52 comprises a body 54 formed from a suitable plastic material such as polystyrene, and having interior dimensions substantially similar to the exterior dimensions of the probe 32.
  • a metal cap 56 is secured to the end of the body 54 corresponding to the tip of the probe 32.
  • the cap 56 is preferably rigidly secured to the body 54, such as by molding material of the body 54 around the cap 56.
  • the probe cover 52 further includes a spherical disk 58 mounted on the body 54.
  • An aperture 60 is formed in the disk 58 and a cylindrical portion 62 extends rearwardly from the disk.
  • the cylindrical portion 62 receives the second transducer 48 extending from the probe 32.
  • the disposable cover 52 is positioned over the barrel 36 of the probe 32 prior to the use of the temperature and respiration rate determining system 30.
  • the cover 52 includes a slot 64 and the probe 32 is provided with a projection 66 which cooperate to assure proper registration between the second transducer 48 and the disk 58 and the cylindrical portion 62.
  • the spring 38 is compressed, thereby maintaining an intimate springloaded contact between the first transducer 45 and its surrounding cover 46 and the cap 56 of the cover 52. Such contact is important in assuring a path of low thermalimpedance through the cover 52 to the first transducer 45.
  • the use of the temperature and respiration rate determining system 30 is illustrated in FIG. 2.
  • the tip of the probe 32 as defined by the first transducer 45 and the surrounding portion of the cover 52 is positioned within the mouth of a patient P.
  • the first transducer 45 is actuated to generate a signal indicative of the temperature of the patient. This signal is transferred to associated apparatus through the cable 50.
  • the positioning of the barrel 36 and the surrounding portion of the cover 52 within the mouth of the patient P automatically positions the second transducer 48 in the path of air exhaled through the nose of the patient.
  • the second thermistor 48 is cyclically actuated in synchronism with the breathing of the patient
  • the operation of the second transducer 48 in determining the respiration rate of the patient is facilitated by the disk 58 and the cylindrical portion 62 of the disposable cover 52 which function to direct the air exhaled through the nose of the patient across the second thermistor 48.
  • the disk 58 and the cylindrical portion 62 also prevent extraneous drafts from contacting the second transducer 48.
  • the system 70 includes a one-piece barrel 72 which may be formed from one of the various plastic materials, such as Lexan, etc.
  • the barrel 72 includes a handle portion 74 which receives a cap 76.
  • the barrel 72 further comprises a pair of opposed cover retaining beads which project outwardly from the barrel 72 at points indicated by the line 82 in FIG. 4.
  • a first transducer 85 is mounted in the end of the barrel 72 remote from the handle 74. Like the transducer 45, the transducer 85 is enclosed by a metal cover 86 which serves to define the tip of the barrel 72.
  • a cable 88 extends from a first transducer 85 through the barrel 72 and through the cap 76 and serves to connect the temperature and respiration rate determining system 70 to associated apparatus.
  • a second transducer90 is mounted in the barrel 72 at a point displaced from the tip thereof. The second transducer 90 extends angularly upwardly relative to the remaining components of the barrel 72. Like the first transducer 85, the second transducer 90 is connected to associated apparatus by the cable 88.
  • the first transducer 85 is temperature sensitive, and therefore comprises a thermistor or similar temperature sensitive component.
  • the second transducer 90 may comprise a temperature sensitive device, a moisture sensitive device, a pressure sensitive device, depending on particular requirements.
  • the positioning of the transducers comprising the temperature and respiration rate determining system 70 with respect to the barrel 72 is substantially identical to the positioning of the transducers comprising the temperature and respiration rate determining system 30 with respect to the probe 32. This fact permits the use of the same probe cover 52 in conjunction with the temperature and respiration rate determining system 70.
  • One difference between the two embodiments of the invention is that in the case of the temperature and respiration rate determining system 70, the cap 56 of the cover 52 is maintained in intimate contact with the cover 86 enclosing the first transducer 85 by means of the beads 80 which are received in a groove 92 formed in the interior of the cover 52.
  • the temperature and respiration rate determining system 70 is used in the same manner as described hereinbefore in conjunction with the system 30 and FIG. 2.
  • the tip of the barrel 72 and the surrounding portion of the cover 52 is positioned in the mouth of the patient.
  • the first transducer 85 is actuated to generate an output signal indicative of the temperature of the patient. Actuation of the first transducer 85 is by means of heat transfer through the cap 56 of the cover 52.
  • the output signal from the first transducer 85 is connected to associated apparatus by the cable 88.
  • the positioning of the tip of the barrel 72 of the system in the mouth of the patient assures the positioning of the second transducer 90 in the path of air exhaled through the nose of the patient.
  • the sec- 0nd transducer 90 is cyclically actuated in accordance with the breathing of the patient, and thereby generates an output signal indicative of the respiration rate of the patient.
  • the disk 58 and the cylindrical portion 62 of the cover 52 functions to direct air exhaled through the nose of the patient across the second transducer and to prevent actuation of the transducer 90 by extraneous drafts.
  • the present invention incorporates numerous advantages over the devices that have heretofore been provided for determining the temperature and the respiration rate of a patient. For example, by means of the present invention, the temperature and the respiration rate of the patient are simultaneously determined with no additional effort over that which would be required to determine temperature only.
  • Another advantage relates to the construction of the probe of the invention, whereby apparatus for determining respiration rate is automatically correctly positioned whenever the probe is utilized to determine temperature.
  • An associated advantage involves the fact that the positioning of the probe in the mouth of the patient to determine temperature forces the mouth of the patient to be closed, whereby breathing must take place through the nose of the patient.
  • Still another advantage involves the fact that securing means such as adhesive tape, straps, clips, etc. are not necessary to the practice of the invention.
  • Apparatus for determining the temperature and respiration rate of a patient which comprises:
  • an elongate probe including one end adapted to be positioned in the mouth of a patient
  • a temperature responsive member supported at the tip of the one end of said probe for positioning in the mouth of the patient
  • said temperature responsive member being adapted to provide a signal indicative of the temperature of the patient
  • respiration responsive member supported on the probe at a point substantially displaced from the tip and in an angular upwardly extending relationship to said probe;
  • respiration responsive member being adapted for actuation by air exhaled through the nose of the patient to provide a signal indicative of the respiration rate of the patient.
  • respiration responsive member is a temperature sensitive device.
  • respiration responsive member is a moisture sensitive device.
  • respiration responsive member is a pressure sensitive device.
  • the apparatus for determining temperature and respiration rate further including a cover extending over said one end of the probe and including a portion having low thermal impedance positioned in engagement with the temperature responsive member so that the temperature responsive member is actuated by heat transfer through the disposable cover.
  • the apparatus for determining temperature and respiration rate according to claim 5 wherein the cover further includes a dish-shaped portion surrounding the respiration responsive member for directing air exhaled by the patient into engagement therewith.
  • Apparatus for determing the temperature and the respiration rate of a patient which comprises:
  • a probe including an elongate cylindrical end adapted to be positioned in the mouth of the patient;
  • a temperature responsive member supported at the extreme tip of the cylindrical end of the probe for generating an output signal indicative of the temperature of the patient
  • respiration responsive member supported on the probe at a point substantially displaced from the tip for actuation by air exhaled through the nose of the patient to generate an output signal indicative of the respiration rate of the patient;
  • a cover enclosing at least the cylindrical end of the probe during the positioning thereof in the mouth of the patient
  • said cover including means for directing air exhaled through the nose of the patient into engagement with the respiration responsive member and a low thermal impedance portion engaging the temperature responsive member so that the temperature responsive member is actuated by heat transfer through the cover.
  • the apparatus for determining temperature and respiration rates according to claim 8 wherein the air directing means of the cover comprises a dish-shaped member having a central aperture for receiving the respiration responsive member on the probe.
  • respiration responsive member comprises a temperature sensitive device.
  • respiration responsive member comprises a moisture sensitive device.
  • respiration responsive member comprises a pressure sensitive device.
  • an at least semi-disposable cover comprising:
  • a plastic body portion having interior dimensions substantially similar to the exterior dimensions of the probe for enclosing the probe during the insertion thereof into the mouth of the patient;
  • deflector means for directing air exhaled through the nose of the patient into engagement with the respiration responsive means, said deflector means extending from the body portion at a point displaced from one end of the body portion between the one end and a second end of the body portion to be adjacent the respiration responsive means.
  • the deflector means comprises a dish-shaped member and cylindrical portion extending form the dish-shaped member for receiving the respiration responsive means.
  • Apparatus for use in the measurement of temperature and respiration rate which comprises:
  • an elongate probe having one end adapted to be positioned in the mouth of a human
  • respiration responsive means supported on the probe at a point displaced from the one end in an angularly extending relationship to said probe for providing a respiration rate related signal.
  • Apparatus for use in the measurement of temperature and respiration rate as set forth in claim 16 including a deflector member surrounding the respiration responsive means for attachment to said elongate probe to direct air exhaled by the human into engagement with the respiration responsive means.
  • Apparatus for use in the measurement of temperature and respiration rate as set forth in claim 16 including a cover extending over the one end of said probe and including a portion having a low thermal impedance positioned in engagement with the temperature responsive means so that the temperature responsive means is actuated by heat transferred through the portion having a low thermal impedance.
  • Apparatus for use in the measurement of temperature and respiration rate which comprises:
  • an elongate probe having a longitudinal axis and including one end adapted to be positioned in the mouth of a human
  • thermoresponsive means supported at the one end of said probe substantially along the longitudinal axis for providing a temperature related signal; a and respiration responsive means supported on the probe at a point displaced from the one end and positioned along an axis other than the longitudinal axis of said probe for providing a respiration rate related signal.
  • Apparatus for use in the measurement of temperature and respiration rate as set forth in claim 19 including a deflector member surrounding the respiration responsinve means and attached to the elongate probe to direct air exhaled by the human into engagement with the respiration responsive means.
  • Apparatus for use in the measurement of temperature and respiration rate as set forth in claim 19 including:
  • a cover extending over said one end of the probe; and said cover including means for directing air exhaled through the nose of the human into engagement with the respiration responsive means and a low thermal impedance portion engaging the temperature responsive means so that the temperature responsive means is actuated by heat transfer through the low thermal impedance portion.
  • Apparatus for determining the temperature and respiration rate of a patient which comprises:
  • an elongate probe including one end adapted to be positioned in the mouth of the patient;
  • temperature responsive means supported at said one end of the probe for positioning in the mouth of the patient
  • said temperature responsive means being adapted to provide a signal indicative of the temperature of the patient
  • respiration responsive means supported on the probe at a point displaced from one end thereof in the path of air exhaled through the nose of the patient when said one end of the probe is inserted in the mouth of the patient;
  • respiration responsive means being adapted for actuation by air exhaled through the nose of the patient to provide a signal indicative of the respiration rate of the patient; and deflector means for directing air exhaled by the patient into engagement with the respiration responsive means, said deflector means surrounding the respiration responsive means and adapted for attachment to the elongate probe.
  • Apparatus for determining the temperature and respiration rate of a patient which comprises:
  • an elongate probe including one end adapted to be positioned in the mouth of the patient;
  • temperature responsive means supported at said one end of the probefor positioning in the mouth of the patient
  • said temperature responsive means being adapted to provide a signal indicative of the temperature of the patient
  • respiration responsive means supported on the probe v at a point displaced from one end thereof in the path of air exhaled through the nose of the patient pedance positioned in engagement with the temperature responsive means so that the temperature responsive means is actuated by heat transferred through said portion and including a dish-shaped portion surrounding the respiration responsive means for directing air exhaled by the patient into engagement with the respiration responsive means.
  • a second transducer 48 is mounted in the should be --As is best shown in FIGURE 4, the probe 70 includes a-.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pulmonology (AREA)
  • Physiology (AREA)
  • Cardiology (AREA)
  • Medical Informatics (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
US346952A 1973-04-02 1973-04-02 System for determining temperature and respiration rate Expired - Lifetime US3884219A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US346952A US3884219A (en) 1973-04-02 1973-04-02 System for determining temperature and respiration rate
CA192,334A CA1006715A (en) 1973-04-02 1974-02-12 System for determining temperature and respiration rate
SE7401978A SE389601B (sv) 1973-04-02 1974-02-14 Apparat for samtidig bestemning av en patients temperatur och andningshastighet
GB1094474A GB1429122A (en) 1973-04-02 1974-03-12 Apparatus for determining temperature and respiration rate
JP2865374A JPS5716811B2 (enrdf_load_stackoverflow) 1973-04-02 1974-03-14
DE2413621A DE2413621C2 (de) 1973-04-02 1974-03-21 Vorrichtung zur Bestimmung der Körpertemperatur und der Respirationsrate eines Patienten
FR7411573A FR2222988B1 (enrdf_load_stackoverflow) 1973-04-02 1974-04-01
CA251,305A CA1000523A (en) 1973-04-02 1976-04-28 Semi-disposable cover for a temperature and respiration rate probe

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Application Number Priority Date Filing Date Title
US346952A US3884219A (en) 1973-04-02 1973-04-02 System for determining temperature and respiration rate

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US3884219A true US3884219A (en) 1975-05-20

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US346952A Expired - Lifetime US3884219A (en) 1973-04-02 1973-04-02 System for determining temperature and respiration rate

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US (1) US3884219A (enrdf_load_stackoverflow)
JP (1) JPS5716811B2 (enrdf_load_stackoverflow)
CA (1) CA1006715A (enrdf_load_stackoverflow)
DE (1) DE2413621C2 (enrdf_load_stackoverflow)
FR (1) FR2222988B1 (enrdf_load_stackoverflow)
GB (1) GB1429122A (enrdf_load_stackoverflow)
SE (1) SE389601B (enrdf_load_stackoverflow)

Cited By (60)

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USD252104S (en) 1977-05-19 1979-06-12 United States Surgical Corporation Hygienic sheath for a temperature sensing probe
USD252103S (en) 1977-04-20 1979-06-12 United States Surgical Corporation Hygienic sheath for a temperature and respiration sensing probe
US4202353A (en) * 1977-02-22 1980-05-13 United States Surgical Corporation Temperature and respiration sensing probe
US4222391A (en) * 1979-02-21 1980-09-16 United States Surgical Corporation Unitary disposable sanitary sheath for temperature and respiration sensing probe
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US8834378B2 (en) 2010-07-30 2014-09-16 Nellcor Puritan Bennett Ireland Systems and methods for determining respiratory effort
US8862196B2 (en) 2001-05-17 2014-10-14 Lawrence A. Lynn System and method for automatic detection of a plurality of SP02 time series pattern types
US9011347B2 (en) 2008-10-03 2015-04-21 Nellcor Puritan Bennett Ireland Methods and apparatus for determining breathing effort characteristics measures
US9031793B2 (en) 2001-05-17 2015-05-12 Lawrence A. Lynn Centralized hospital monitoring system for automatically detecting upper airway instability and for preventing and aborting adverse drug reactions
US9042952B2 (en) 1997-01-27 2015-05-26 Lawrence A. Lynn System and method for automatic detection of a plurality of SPO2 time series pattern types
US9155493B2 (en) 2008-10-03 2015-10-13 Nellcor Puritan Bennett Ireland Methods and apparatus for calibrating respiratory effort from photoplethysmograph signals
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US9521971B2 (en) 1997-07-14 2016-12-20 Lawrence A. Lynn System and method for automatic detection of a plurality of SPO2 time series pattern types
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Also Published As

Publication number Publication date
SE389601B (sv) 1976-11-15
GB1429122A (en) 1976-03-24
CA1006715A (en) 1977-03-15
JPS5716811B2 (enrdf_load_stackoverflow) 1982-04-07
DE2413621A1 (de) 1974-10-17
FR2222988A1 (enrdf_load_stackoverflow) 1974-10-25
JPS49128590A (enrdf_load_stackoverflow) 1974-12-09
FR2222988B1 (enrdf_load_stackoverflow) 1978-04-21
DE2413621C2 (de) 1984-01-05

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