US3646319A - Infant warmer having electric (infrared) heating means - Google Patents

Infant warmer having electric (infrared) heating means Download PDF

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US3646319A
US3646319A US782166A US3646319DA US3646319A US 3646319 A US3646319 A US 3646319A US 782166 A US782166 A US 782166A US 3646319D A US3646319D A US 3646319DA US 3646319 A US3646319 A US 3646319A
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Prior art keywords
infant
heating
support
warmer
column
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US782166A
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John R Auld
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MERCO PRODUCTS Inc
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MERCO PRODUCTS Inc
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G11/00Baby-incubators; Couveuses
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/0033Heating devices using lamps
    • H05B3/0085Heating devices using lamps for medical applications
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G11/00Baby-incubators; Couveuses
    • A61G11/001Baby-incubators; Couveuses with height-adjustable elements
    • A61G11/003Baby-incubators; Couveuses with height-adjustable elements height-adjustable heater

Definitions

  • ABSTRACT A separate environment limited to the immediate vicinity of ..2l9/347,2l9/35:l,02;b8/l1/8; an infant is creamd by the infant warm which employs ini 58 Fieid 358 frared radiation controlled in intensity by a unit responsive to the body skin temperature of an infant.
  • the warmer is elongate in design to provide a controlled environment of limited dimensions within a surrounding ambient environment and inl561 References Cam cludes a vertical mounting stand which is adapted to receive UNITED STATES PATENTS insertable block adjusting sections for controlled height ad- 'ustment. 2,402,934 6/1946 Wood... ..248/161 J 2,495,513 1/1950 Doyle ..219/354 X 1 Claims, 2 Drawing Figures PATENTEDFEBZQ I972 3, 646, 3 1 9 JOHN R. AULD INVENTOR.
  • the present invention relates to electrical warming units generally and more particularly to a novel and improved infant warmer for providing infrared radiation of controlled intensity.
  • a newborn infant has been accustomed to a constant temperature of 37 C. in utero, but the environmental conditions of hospital delivery rooms are adjusted for the thermal comforts of adults. Obviously, warming the delivery room environment to conform with that to which the infant has been accustomed would result in acute discomfort for adults, but exposure to cooler environment causes the newborn infant to lose body heat rapidly by evaporation, convection and radiation.
  • biochemical stress and change Associated with decrease in the body temperature of the newborn infant are evidences of biochemical stress and change. Such biochemical change does not normally adversely affect the healthy term infant, but in premature infants or those who have birth asphyxia, there is evidence to indicate that cooling might be detrimental.
  • the drop in infant body temperature at birth prevents the measurement of body temperature for an indication of disease during the first 6 to 12 hours after birth.
  • body temperature There are several serious but treatable conditions, for example hypoglycemia and severe infection, which may be evidenced by hypothermia.
  • hypoglycemia and severe infection, which may be evidenced by hypothermia.
  • body temperature cannot be used as a guideline to detect these conditions.
  • the warmer environment should be limited to the immediate vicinity of the infant and must be carefully controlled.
  • Another object of this invention is to provide a novel and improved infant warmer which incorporates a positive adjustment feature provided by sized spacer blocks insertable in the support stand for a spaced warming unit.
  • a still further object of this invention is to provide a novel and improved infant warmer which includes a temperature control responsive to infant body temperature.
  • FIG. I is a perspective view of the infant warmer of the present invention.
  • FIG. 2 is a perspective view of the infant warmer of FIG. 1 attached to an infant support table.
  • the infant warmer of the present invention indicated generally at 10 includes an adjustable support section 12 for a heater assembly 14 which may be connected to a base 16.
  • the heater assembly includes an elongated casing I8 preferably of stainless steel, which supports an infra red heating tube assembly 20 and the electrical circuitry therefor. Radiation from the heating tube assembly is directed from the casing through an opening 22 which is covered by an extruded metallic mesh 24 of aluminum or similar mesh material.
  • the adjustable support section 12 includes a vertical column 26, an L-shaped shelf bracket 28, a support insert column 30 and one or more elevating spacers 32 connected to form a telescoping support.
  • the support insert column is designed to fit within a stub bracket 34 which is attached to one end of the casing 18, and one end of the insert column is retained within the bracket by a bolt 36.
  • the vertical column 26, the shelf bracket 28, and the elevating spacer 32 are formed of tubular metallic material, such as the square metal tubing illustrated in the drawing, which is dimensioned to receive the insert column 30.
  • One leg 38 of the shelf bracket forms a sleeve to receive the insert column, which then extends through the elevating spacers and into the vertical column.
  • the elevating spacers are dimensioned to extend the length of the support section 12 by specific increments.
  • the base section 16 is formed by two spaced parallel legs 40 joined by a cross section 42.
  • the end of the vertical column 26 is secured to the cross section and the vertical column extends at substantially a right angle to the base section. When the infant warmer is upright, the base section and heater assembly are maintained in substantially parallel relationship.
  • the legs 40 and cross section 42 of the base section 16 are formed of tubular material of the type used in the adjustable support section 12, and are adapted to slide beneath a carrier for the infant. In some instances, it may be desirable to make the infant warmer mobile with the infant carrier, and for this purpose, the base section 12 is eliminated and the vertical column 26 is secured directly to a wheeled infant support table as illustrated in FIG. 2.
  • the electrical circuitry for energizing the heating tube assembly 20 is controlled by a servocontroller unit 44 which is supported by a shelf 46 secured to a leg 48 projecting laterally from the leg 38 of the shelf bracket 28.
  • This servocontroller is connected to the infrared tube assembly by an output lead 50 and to a suitable power source by an input lead 52.
  • the desired temperature for the environment in the immediate vicinity of an infant is set into the servocontroller by means of a control dial 54, and the actual body skin temperature of the infant is sensed by means of a thermistor probe 56 which is attached to the skin of the infant.
  • the signal from the thermistor probe passes to the servocontroller unit 44 over a line 58, and operates to determine when the servocontroller energizes the infrared tube assembly 20.
  • the probe forms one leg of an A C bridge which includes a variable leg responsive to the control dial 54. If the temperature sensed by the probe deviates from that set by the control dial, the bridge becomes unbalanced and an amplified error signal is provided to control a relay. The relay in turn determines when power is provided to energize the infrared tube assembly.
  • the servocontroller unit 44 may be formed by a number of commercially available units such, as for example, the Therrissemp (R) temperature controller, YSI model 71, manufactured by the Yellow Springs Instrument Co. of Yellow Springs, Ohio. This controller operates to cycle the infra tube assembly 20 and accurately maintains a preset temperature environment responsive to actual infant body temperature sensed by the probe 56.
  • Therrissemp (R) temperature controller YSI model 71, manufactured by the Yellow Springs Instrument Co. of Yellow Springs, Ohio. This controller operates to cycle the infra tube assembly 20 and accurately maintains a preset temperature environment responsive to actual infant body temperature sensed by the probe 56.
  • the heater assembly 14 by vertically adjustable relative to the position of an infant, but the heater assembly must never be moved too close to the infant's body. Therefore, the accurately dimensioned elevating spacers 32 are provided to permit adjustment within specified perameters, and once a spacer is included, there is no danger that the support section 12 will slip out of adjustment while the heater assembly is in use.
  • An infant warmer for creating a controlled environment of increased temperature about an infant
  • an electrical heating assembly including an elongated casing and in- I frared heating means mounted within the casing, heating consioned to telescopically receive the free end of said insert column and shelf means to support said heating control means
  • said shelf means including an L-shaped bracket having a vertical leg and a horizontal leg, the vertical leg of said bracket being formed of tubular material adapted for insertion over said support insert column between said horizontal leg for supporting said heating control means.

Abstract

A separate environment limited to the immediate vicinity of an infant is created by the infant warmer which employs infrared radiation controlled in intensity by a unit responsive to the body skin temperature of an infant. The warmer is elongate in design to provide a controlled environment of limited dimensions within a surrounding ambient environment and includes a vertical mounting stand which is adapted to receive insertable block adjusting sections for controlled height adjustment.

Description

United States Patent Auld 1 Feb. 29, 1972 [54] INFANT WARMER HAVING ELECTRIC 2,611,367 9/1952 Harkenrider ..219/347 UX (INFRARED) HEATING MEANS 2,951,928 9/1960 2,974,870 3/1961 1 1 lnvemofl John Auld, Eugene. s 3,299,253 1/1967 Lawson ..2|9/s43 x Prod ts I E [73] Assignee Merco uc nc ugene Oreg Primary Examiner-R F- staubly [22] Filed! 1968 Attorney-Seed, Berry 8L Dowrey [21] Appl. No.: 782,166 [57] ABSTRACT A separate environment limited to the immediate vicinity of ..2l9/347,2l9/35:l,02;b8/l1/8; an infant is creamd by the infant warm which employs ini 58 Fieid 358 frared radiation controlled in intensity by a unit responsive to the body skin temperature of an infant. The warmer is elongate in design to provide a controlled environment of limited dimensions within a surrounding ambient environment and inl561 References Cam cludes a vertical mounting stand which is adapted to receive UNITED STATES PATENTS insertable block adjusting sections for controlled height ad- 'ustment. 2,402,934 6/1946 Wood... ..248/161 J 2,495,513 1/1950 Doyle ..219/354 X 1 Claims, 2 Drawing Figures PATENTEDFEBZQ I972 3, 646, 3 1 9 JOHN R. AULD INVENTOR.
ATTORNEYS INFANT WARMER HAVING ELECTRIC (INFRARED) HEATING MEANS The present invention relates to electrical warming units generally and more particularly to a novel and improved infant warmer for providing infrared radiation of controlled intensity.
A newborn infant has been accustomed to a constant temperature of 37 C. in utero, but the environmental conditions of hospital delivery rooms are adjusted for the thermal comforts of adults. Obviously, warming the delivery room environment to conform with that to which the infant has been accustomed would result in acute discomfort for adults, but exposure to cooler environment causes the newborn infant to lose body heat rapidly by evaporation, convection and radiation.
Associated with decrease in the body temperature of the newborn infant are evidences of biochemical stress and change. Such biochemical change does not normally adversely affect the healthy term infant, but in premature infants or those who have birth asphyxia, there is evidence to indicate that cooling might be detrimental.
Apart from biochemical change, the drop in infant body temperature at birth prevents the measurement of body temperature for an indication of disease during the first 6 to 12 hours after birth. There are several serious but treatable conditions, for example hypoglycemia and severe infection, which may be evidenced by hypothermia. However, if the infant is chilled in the delivery room, body temperature cannot be used as a guideline to detect these conditions.
It is desirable to provide two environments within a delivery room to accommodate both the newborn infant and the adults present. If possible, the warmer environment should be limited to the immediate vicinity of the infant and must be carefully controlled.
It is a primary object of this invention to provide a novel and improved infant warmer adapted to develop a controlled temperature environment in the vicinity of an infant.
Another object of this invention is to provide a novel and improved infant warmer which incorporates a positive adjustment feature provided by sized spacer blocks insertable in the support stand for a spaced warming unit.
A still further object of this invention is to provide a novel and improved infant warmer which includes a temperature control responsive to infant body temperature.
These and other objects of this invention will become readily apparent upon consideration of the following specification and claims in conjunction with the accompanying drawing.
IN THE DRAWING FIG. I is a perspective view of the infant warmer of the present invention; and
FIG. 2 is a perspective view of the infant warmer of FIG. 1 attached to an infant support table.
Referring now to the drawing, the infant warmer of the present invention indicated generally at 10 includes an adjustable support section 12 for a heater assembly 14 which may be connected to a base 16. The heater assembly includes an elongated casing I8 preferably of stainless steel, which supports an infra red heating tube assembly 20 and the electrical circuitry therefor. Radiation from the heating tube assembly is directed from the casing through an opening 22 which is covered by an extruded metallic mesh 24 of aluminum or similar mesh material.
The adjustable support section 12 includes a vertical column 26, an L-shaped shelf bracket 28, a support insert column 30 and one or more elevating spacers 32 connected to form a telescoping support. The support insert column is designed to fit within a stub bracket 34 which is attached to one end of the casing 18, and one end of the insert column is retained within the bracket by a bolt 36.
The vertical column 26, the shelf bracket 28, and the elevating spacer 32 are formed of tubular metallic material, such as the square metal tubing illustrated in the drawing, which is dimensioned to receive the insert column 30. One leg 38 of the shelf bracket forms a sleeve to receive the insert column, which then extends through the elevating spacers and into the vertical column. The elevating spacers are dimensioned to extend the length of the support section 12 by specific increments.
The base section 16 is formed by two spaced parallel legs 40 joined by a cross section 42. The end of the vertical column 26 is secured to the cross section and the vertical column extends at substantially a right angle to the base section. When the infant warmer is upright, the base section and heater assembly are maintained in substantially parallel relationship.
The legs 40 and cross section 42 of the base section 16 are formed of tubular material of the type used in the adjustable support section 12, and are adapted to slide beneath a carrier for the infant. In some instances, it may be desirable to make the infant warmer mobile with the infant carrier, and for this purpose, the base section 12 is eliminated and the vertical column 26 is secured directly to a wheeled infant support table as illustrated in FIG. 2.
The electrical circuitry for energizing the heating tube assembly 20 is controlled by a servocontroller unit 44 which is supported by a shelf 46 secured to a leg 48 projecting laterally from the leg 38 of the shelf bracket 28. This servocontroller is connected to the infrared tube assembly by an output lead 50 and to a suitable power source by an input lead 52.
The desired temperature for the environment in the immediate vicinity of an infant is set into the servocontroller by means of a control dial 54, and the actual body skin temperature of the infant is sensed by means of a thermistor probe 56 which is attached to the skin of the infant. The signal from the thermistor probe passes to the servocontroller unit 44 over a line 58, and operates to determine when the servocontroller energizes the infrared tube assembly 20. Actually the probe forms one leg of an A C bridge which includes a variable leg responsive to the control dial 54. If the temperature sensed by the probe deviates from that set by the control dial, the bridge becomes unbalanced and an amplified error signal is provided to control a relay. The relay in turn determines when power is provided to energize the infrared tube assembly.
The servocontroller unit 44 may be formed by a number of commercially available units such, as for example, the Therrnistemp (R) temperature controller, YSI model 71, manufactured by the Yellow Springs Instrument Co. of Yellow Springs, Ohio. This controller operates to cycle the infra tube assembly 20 and accurately maintains a preset temperature environment responsive to actual infant body temperature sensed by the probe 56.
It is imperative that the heater assembly 14 by vertically adjustable relative to the position of an infant, but the heater assembly must never be moved too close to the infant's body. Therefore, the accurately dimensioned elevating spacers 32 are provided to permit adjustment within specified perameters, and once a spacer is included, there is no danger that the support section 12 will slip out of adjustment while the heater assembly is in use.
It is believed that the invention will have been clearly understood from the foregoing detailed description of my nowpreferred illustrated embodiment. Changes in the details of construction may be resorted to without departing from the spirit of the invention and it is accordingly my intention that no limitations be implied and that the hereto annexed claims be given the broadest interpretation to which the employed language fairly admits.
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. An infant warmer for creating a controlled environment of increased temperature about an infant comprising an electrical heating assembly including an elongated casing and in- I frared heating means mounted within the casing, heating consioned to telescopically receive the free end of said insert column and shelf means to support said heating control means, said shelf means including an L-shaped bracket having a vertical leg and a horizontal leg, the vertical leg of said bracket being formed of tubular material adapted for insertion over said support insert column between said horizontal leg for supporting said heating control means.

Claims (1)

1. An infant warmer for creating a controlled environment of increased temperature about an infant comprising an electrical heating assembly including an elongated casing and infrared heating means mounted within the casing, heating control means connected to control the energization of said heating means, said heating control means being operable to cycle said heating means to maintain a preset skin temperature, and support means connected to said casing adjacent one end thereof, said support means including a vertical column assembly adjustable in length to vertically position said infrared heating means in a horizontal plane above said infant, said vertical column assembly comprising an elongated support in said column, one end of which is secured to one end of said elongated casing, a vertical column of tubular material dimensioned to telescopically receive the free end of said insert column and shelf means to support said heating control means, said shelf means including an L-shaped bracket having a vertical leg and a horizontal leg, the vertical leg of said bracket being formed of tubular material adapted for insertion over said support insert column between said horizontal leg for supporting said heating control means.
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731055A (en) * 1971-12-15 1973-05-01 Kalglo Electronics Co Inc Radiant heating apparatus
US4249065A (en) * 1977-12-19 1981-02-03 Malone James F Bird cage heater
US4259566A (en) * 1977-04-30 1981-03-31 Sharp Kabushiki Kaisha Hair waving applicance having plural independently temperature controllable electric heaters
US4491721A (en) * 1980-03-17 1985-01-01 Davis Ralph A Electric bed heating device
US4650965A (en) * 1985-08-15 1987-03-17 Lawson John W Radiant head-heating apparatus
WO1988004163A1 (en) * 1986-12-12 1988-06-16 Medicor Process and device, in particular for heating infants by thermal radiation
US4910382A (en) * 1987-11-24 1990-03-20 Takara Belmont Kabushiki Kaisha Infra-red hair dryer
US4990749A (en) * 1989-05-05 1991-02-05 Hussmann Corporation Temperature controller for a food merchandiser
DE3030677C2 (en) * 1979-01-30 1991-08-29 Stig-Eric Ransta Se Smeds
US5050232A (en) * 1990-03-28 1991-09-17 Bgk Finishing Systems, Inc. Movable heat treating apparatus utilizing proportionally controlled infrared lamps
US5162038A (en) * 1989-12-04 1992-11-10 Hill-Rom Company Infant warmer open bed
US5898817A (en) * 1996-02-19 1999-04-27 Fisher & Paykel Limited Infant warmer with height adjustment mechanism
US5915072A (en) * 1997-04-30 1999-06-22 Hill-Rom, Inc. Infrared heater apparatus
JP2011212439A (en) * 2010-03-31 2011-10-27 General Electric Co <Ge> Device and method for infant warmer

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2402934A (en) * 1942-07-07 1946-06-25 Posture Res Corp Chair
US2495513A (en) * 1945-02-15 1950-01-24 Charles C Doyle Electric (infrared) heating appliance
US2611367A (en) * 1949-02-12 1952-09-23 Rudolph W Miller Therapeutic lamp support and control
US2951928A (en) * 1959-05-13 1960-09-06 Quartz Products Corp Infrared heater
US2974870A (en) * 1957-08-15 1961-03-14 Honeywell Regulator Co Atmospheric condensation prevention control apparatus
US3299253A (en) * 1963-10-30 1967-01-17 Sierracin Corp Warming device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2402934A (en) * 1942-07-07 1946-06-25 Posture Res Corp Chair
US2495513A (en) * 1945-02-15 1950-01-24 Charles C Doyle Electric (infrared) heating appliance
US2611367A (en) * 1949-02-12 1952-09-23 Rudolph W Miller Therapeutic lamp support and control
US2974870A (en) * 1957-08-15 1961-03-14 Honeywell Regulator Co Atmospheric condensation prevention control apparatus
US2951928A (en) * 1959-05-13 1960-09-06 Quartz Products Corp Infrared heater
US3299253A (en) * 1963-10-30 1967-01-17 Sierracin Corp Warming device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731055A (en) * 1971-12-15 1973-05-01 Kalglo Electronics Co Inc Radiant heating apparatus
US4259566A (en) * 1977-04-30 1981-03-31 Sharp Kabushiki Kaisha Hair waving applicance having plural independently temperature controllable electric heaters
US4249065A (en) * 1977-12-19 1981-02-03 Malone James F Bird cage heater
DE3030677C2 (en) * 1979-01-30 1991-08-29 Stig-Eric Ransta Se Smeds
US4491721A (en) * 1980-03-17 1985-01-01 Davis Ralph A Electric bed heating device
US4650965A (en) * 1985-08-15 1987-03-17 Lawson John W Radiant head-heating apparatus
WO1988004163A1 (en) * 1986-12-12 1988-06-16 Medicor Process and device, in particular for heating infants by thermal radiation
US4910382A (en) * 1987-11-24 1990-03-20 Takara Belmont Kabushiki Kaisha Infra-red hair dryer
US4990749A (en) * 1989-05-05 1991-02-05 Hussmann Corporation Temperature controller for a food merchandiser
US5162038A (en) * 1989-12-04 1992-11-10 Hill-Rom Company Infant warmer open bed
US5050232A (en) * 1990-03-28 1991-09-17 Bgk Finishing Systems, Inc. Movable heat treating apparatus utilizing proportionally controlled infrared lamps
US5898817A (en) * 1996-02-19 1999-04-27 Fisher & Paykel Limited Infant warmer with height adjustment mechanism
US5915072A (en) * 1997-04-30 1999-06-22 Hill-Rom, Inc. Infrared heater apparatus
JP2011212439A (en) * 2010-03-31 2011-10-27 General Electric Co <Ge> Device and method for infant warmer

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