CA1201742A - Wet dressings heater - Google Patents
Wet dressings heaterInfo
- Publication number
- CA1201742A CA1201742A CA000432158A CA432158A CA1201742A CA 1201742 A CA1201742 A CA 1201742A CA 000432158 A CA000432158 A CA 000432158A CA 432158 A CA432158 A CA 432158A CA 1201742 A CA1201742 A CA 1201742A
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- Prior art keywords
- temperature
- heating element
- heater
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- ing
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F7/0241—Apparatus for the preparation of hot packs, hot compresses, cooling pads, e.g. heaters or refrigerators
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- External Artificial Organs (AREA)
Abstract
WET DRESSINGS HEATER
ABSTRACT OF THE DISCLOSURE
A heater for wet dressings comprising, a case having a base with sidewalls defining a cavity, and an insert connected to the base and defining at least one recess in the cavity to receive the wet dressings. The heater has an electrical heating element in close proximity to the insert recess for heating the wet dressings, and the temperature of the heating element is con-trolled in the desired range of temperature of the wet dressings.
ABSTRACT OF THE DISCLOSURE
A heater for wet dressings comprising, a case having a base with sidewalls defining a cavity, and an insert connected to the base and defining at least one recess in the cavity to receive the wet dressings. The heater has an electrical heating element in close proximity to the insert recess for heating the wet dressings, and the temperature of the heating element is con-trolled in the desired range of temperature of the wet dressings.
Description
BACKGROUND OF THE INVENTION
The present invention relates to heating systems, andmore particularly to such systems for heating wet dressings.
Wet dressings are commonly used for therapeutic pur~
S poses, such as on abscesses and boils. The we-t dressings are applied in a heated state and serve to prevent tissue encrusta-tion, and promote localized blood flow and fluid drainage, with the effect of reducing swelling and its consequent pain~ Such dressings are commonly packaged in specially designed foil packs which are capable of conducting and withstanding increased temp-eratures and internal pressures during heating. After appropri-ate heating, the dressings are removed from the packs, and are applied to the patient.
In the past, the dressings are commonly heated through use of radiant heating procedures. Thus, the packed dressings may be stacked below a bulb which emits infrared rays in order to heat the dressings in the foil packs. The upper pack of the stacked packs remains below the heating bulb for a set period of time, such as five minutes, after which the upper pack may be removed and the underlying packs must be sequentially heated for additional periods of time, such as three minutes each. Thus, such prior devices require an extended period of time in order to heat a series of wet dressings, and limit immediate access to a plurality of heated dressings. Moreover, the heatinc~ device does not permit storage of dressings in a heated condition~ and the dressings must be applied immediately after heating in order to prevent their cooling prior to use. Further, one or more of the wet dressings may be overheated due to lack of precise con~
trol over the radiant heating procedure, resulting in possible discomfort and harm to the patient when applied to the pa-tient's --1~
~A~ ~ ~7 ~
tissue. In a~dltion, the n~lmber of dressings which may be simul~
taneously heated is limited by the capabilities of the heating device.
A wet dressings heating system is disclosed in U.~.
4,163,89~.
SUMM~RY OF T~IE INV~NTION
A principal feature of the present invention is the provision of an improved heater for wet dressings.
The heater of the present invention comprises, a case having a base with sidewalls defining a cavity, and an insert connected to the base and defining at least one recess in the cavity to receive the wet dressings. The heater has an electri-cal heating element in close proximity to the insert recess for hea-ting the wet dressings, and means for controlling the temper-ature of the heating element in the desired range of temperature of the wet dressings.
A feature of the present inven-tion is that a plurality of wet dressings may be simultaneously heated in the insert recess.
Another feature of the invention is that the wet dressings may be maintained at the desired temperature range over a period of time.
Still another feature of the invention is that the heater prevents overheating of the dressings.
Thus, a feature of the present invention is that a number of dressings may be heated and stored at a pxecisely con-trolled temperature over a period of time until desired Eor use.
Further features will become more :Eully apparent in the following description of the embodiments of this invention and from the appended claims.
DESCRIPTION OF l'HE DRAWINGS
In the drawings:
Fig. 1 is a perspective view of a heater of the pres-ent invention;
Fig. 2 is a sectional view taken substantially as indicated along the line 2-2 of Fig. 1;
Fig. 3 is a diagrammatic view of a circuit for the heater of the present invention; and Fig. 4 is a diagrammatic view of a portion of another circuit of the invention.
DESCRIPTION OF THE PREFERRED EM~ODIMENTS
Referring now to Figs. 1 and 2~ there is shown a heater generally designated 10 having a case 12 comprising a base 14 and a lid 16. The base 14 has a bottom wall 18 and a plurality of upstanding sidewalls 20 defining a cavity 22. The lid 16 has a top wall 2~ and a pl~rality of sidewalls 26 defining a cavity 28. The case 12 has a pair of hinges 30 securing the lld ].6 to the base 14, such that the lid 16 may be placed in a first closed position, as shown ln Fig. 2, with the lid 16 covering the cavity 22, and a second open position, as shown in Flg. 1, with the lid 16 being removed from the base 14. The case 12 has a pair of clamps 32 to secure the lid 16 to the base 1~ in the closed position of the lid 16, as shown in Fig. 2~ The case 12 has a layer of insulation material 34, such as a suitable foam material, covering the bottom wall 18, sidewalls 20, top wall 24, and sidewalls 26 to m;n;mize the escape of heat from the case 120 The heater 10 has an insert 36, which may be con~
structed from a suitable metal such as stainless steel, with the insert 36 being secured to and extending across an upper portion of the base 14. The insert 36 has a pair of opposed walls 38 defining a pair of recesses 40 in the cavity 22, such that the wet dressings W may be received between the inner surfaces 42 of the opposed walls 38. The heater 10 has a pair of opposed end plates 43 to retain the insert 36.
The heater 10 has a pair of heating elements 44 and 45 secured to and substantially covering the outer surface 46 of the opposed walls 38, such that the heating elements 44 and 45 supply heat to the insert 36 and wet dressings W when current is supplied to the heating elernents 44 and 45. The heating ele-ments 44 and 45 may comprise an etched foil heater embedded in an elastic silicone rubber, such as the heating element sold by Electro-Flex Heat, Inc. of Bloomfield, Connecticut. The heater 10 has thermostats 4~, 50, and 52 secured to the insert 36 through openings 54 in the heating elements 44 and 45. With reference to Fig. 1, the heater 10 has a double pole single throw power switch 56 with a light 58 in the switch 56 to indi~
cate when the power to the heater 10 is on. Also, the heater 10 has a second light 60 to indica-te when the heater 10 is in an initial warming condition when the light is on.
A circuit 62 for the heater 10 is illustrated in Fig.
3. As shown, the heater 10 has a plug 64 which may be secured in a wall outlet to a source of electrical power. The plug 64 is connected by a pair of leads 66 and 68 to the switch 56~ such that the electrical power is disconnected ~rom the clrcui-t 62 when the switch 56 is open, and the electrical power is con-nected -to the circuit 62 when the switch 56 is closed. The switch 56 is connected to a pair of leads 70 and 72, and the light 58 is connected between the leads 70 and 72, such that the light 58 is lit when the switch 56 is closed, and the light 58 _~_ ~ ~ f ~ 9 ~'"t i~ l h is o~f when -the switch 56 ls open.
The lead 70 is connected to -the thermostats 48, 50, and 52, the thermostats 48 and 50 are connected by a lead 74 to the heating element 44, and the thermostat 52 is connected by a lead 76 to the heating element 45, with the heating elements 44 and 45 being connected to the lead 72 to complete the circuit.
As shown, the light 60 is in series with the thermostat 50 for a purpose which will be described below.
The desired temperature range of the wet dressings W
10 is between 115F and 120F, but when the wet dresslngs W are ini-tially at room temperature a greater amount of heating is required to bring them up to the desired temperature range. The upper and lower set points of the thermostats 48 and 52 are 135F and 115F, while the upper and lower set points of the 15 thermostat 50 are 145F and 100F. When the heater 10 is ini-tially turned on by the power switch 56, the three thermostats 48, 50, and 52 are all closed, such that current is supplied to the heaters 44 and 45, and the light 60 is lit indicating that the wet dressings W are in an initial heating condition. When 20 the thermostat 52 senses that the temperature associated with the heating element 45 is 135F, the thermostat 52 interrupts current to the heating element 45. When the thermos-ta-t 52 sub-sequently senses that the temperature associated with the heat-ing element 45 drops to 115F, the thermostat 52 again closes 25 and supplies current to the heating element 45. Subsequently, the ther~..ostat 52 interrupts current to the heating element 45 when the sensed temperature is 135F.
As previously indicated, when the power switch 56 is initially closed, both thermostats 4S and 50 are closed to sup-ply current to the heating element 44. When -the thermostat 48 senses that the temperature associated with the heating element 44 is 135F, the thermosta-t 48 interrupts current to the heating element 44. However, at this time, the thermostat 50 is still closed and continues to supply current to the heating element 44 until the sensed temperature associated with the heating element 44 is 145 at which time the thermostat 50 opens and interrupts current to the heating element 44. As a result, the light 60 in series with the thermostat 50 turns off, thus indicating that the initial heating period for the wet dressings W has been com-pleted. Next, when the thermostat 48 senses that the tempera-ture associated with the heating element 44 is 115F, the thermo-stat 48 closes and again supplies current to the heating element 44. Hence, the thermostat 50 will remain in an open configura~
tion since the temperature associated with the heating element 44 does not drop to its lower set point of 100F~ and thus the light 60 remains in an off condition. Subsequently, the thermo-stat 48 again interrupts current to the heating element 44 when the sensed temperature associated with the heating element 44 is 135F. In this manner, the thermostats 48 and 50 heat the wet dressings W a greater amount during the initial héating period in order to more rapidly obtain the desired temperature range of the wet dressings W. During operation of the heater 10 with the light 60 in an off condition, the thermostats 48 and 52 maintain the heating elements 44 and 45 at a temperature such as to main-tain the wet dressings W in the desired temperature range of115F to 120F.
In U5~, the lid 16 is moved to the open configuration, as illustrated in Fig. 1, and a plurality of wet dressings W are inserted into the recesses 40 of the insert 36. Next, the lid 16 may be moved to the closed configuration, as shown in Fig. 2, 4~, and the clamps 32 may be closed to lock the lid 16 onto the base 14. The power swi-tch 56 may be moved to the closed position, and the operator waits until the light 60 assumes the off condi-tion at which time the wet dressings W are ready for use. If desired, the wet dressings W may be maintained at the desired temperature range over a period of time, and the lid 16 may be moved to the open configuration, as shown in Fig. 1, in order to remove the wet dressings W from the recesses 40 for use on a patient.
With reference to Fig. 4 r a portion of another embodi-ment of the circuit is shown. In this embodiment, the light 60 is in parallel with the thermostats 48 and 50, with the rest of the circuit shown in Fig. 3 remaining the same. When the thermo-stats 48 and 50 are conducting, insufficient current passes through the light 60 to energize the light. ~ence, the light 60 turns off when the thermostats 48 and 50 are in a conducting state. The light 60 turns on when the thermostats 48 and 50 are not conducting to indicate that the dressings are heated and ready for use.
The foregoing detailed description is given for clear-ness of understanding only, and no unnecessary limitations should be understood therefrom, as modi~ications will be obvious to those skilled in the art.
The present invention relates to heating systems, andmore particularly to such systems for heating wet dressings.
Wet dressings are commonly used for therapeutic pur~
S poses, such as on abscesses and boils. The we-t dressings are applied in a heated state and serve to prevent tissue encrusta-tion, and promote localized blood flow and fluid drainage, with the effect of reducing swelling and its consequent pain~ Such dressings are commonly packaged in specially designed foil packs which are capable of conducting and withstanding increased temp-eratures and internal pressures during heating. After appropri-ate heating, the dressings are removed from the packs, and are applied to the patient.
In the past, the dressings are commonly heated through use of radiant heating procedures. Thus, the packed dressings may be stacked below a bulb which emits infrared rays in order to heat the dressings in the foil packs. The upper pack of the stacked packs remains below the heating bulb for a set period of time, such as five minutes, after which the upper pack may be removed and the underlying packs must be sequentially heated for additional periods of time, such as three minutes each. Thus, such prior devices require an extended period of time in order to heat a series of wet dressings, and limit immediate access to a plurality of heated dressings. Moreover, the heatinc~ device does not permit storage of dressings in a heated condition~ and the dressings must be applied immediately after heating in order to prevent their cooling prior to use. Further, one or more of the wet dressings may be overheated due to lack of precise con~
trol over the radiant heating procedure, resulting in possible discomfort and harm to the patient when applied to the pa-tient's --1~
~A~ ~ ~7 ~
tissue. In a~dltion, the n~lmber of dressings which may be simul~
taneously heated is limited by the capabilities of the heating device.
A wet dressings heating system is disclosed in U.~.
4,163,89~.
SUMM~RY OF T~IE INV~NTION
A principal feature of the present invention is the provision of an improved heater for wet dressings.
The heater of the present invention comprises, a case having a base with sidewalls defining a cavity, and an insert connected to the base and defining at least one recess in the cavity to receive the wet dressings. The heater has an electri-cal heating element in close proximity to the insert recess for hea-ting the wet dressings, and means for controlling the temper-ature of the heating element in the desired range of temperature of the wet dressings.
A feature of the present inven-tion is that a plurality of wet dressings may be simultaneously heated in the insert recess.
Another feature of the invention is that the wet dressings may be maintained at the desired temperature range over a period of time.
Still another feature of the invention is that the heater prevents overheating of the dressings.
Thus, a feature of the present invention is that a number of dressings may be heated and stored at a pxecisely con-trolled temperature over a period of time until desired Eor use.
Further features will become more :Eully apparent in the following description of the embodiments of this invention and from the appended claims.
DESCRIPTION OF l'HE DRAWINGS
In the drawings:
Fig. 1 is a perspective view of a heater of the pres-ent invention;
Fig. 2 is a sectional view taken substantially as indicated along the line 2-2 of Fig. 1;
Fig. 3 is a diagrammatic view of a circuit for the heater of the present invention; and Fig. 4 is a diagrammatic view of a portion of another circuit of the invention.
DESCRIPTION OF THE PREFERRED EM~ODIMENTS
Referring now to Figs. 1 and 2~ there is shown a heater generally designated 10 having a case 12 comprising a base 14 and a lid 16. The base 14 has a bottom wall 18 and a plurality of upstanding sidewalls 20 defining a cavity 22. The lid 16 has a top wall 2~ and a pl~rality of sidewalls 26 defining a cavity 28. The case 12 has a pair of hinges 30 securing the lld ].6 to the base 14, such that the lid 16 may be placed in a first closed position, as shown ln Fig. 2, with the lid 16 covering the cavity 22, and a second open position, as shown in Flg. 1, with the lid 16 being removed from the base 14. The case 12 has a pair of clamps 32 to secure the lid 16 to the base 1~ in the closed position of the lid 16, as shown in Fig. 2~ The case 12 has a layer of insulation material 34, such as a suitable foam material, covering the bottom wall 18, sidewalls 20, top wall 24, and sidewalls 26 to m;n;mize the escape of heat from the case 120 The heater 10 has an insert 36, which may be con~
structed from a suitable metal such as stainless steel, with the insert 36 being secured to and extending across an upper portion of the base 14. The insert 36 has a pair of opposed walls 38 defining a pair of recesses 40 in the cavity 22, such that the wet dressings W may be received between the inner surfaces 42 of the opposed walls 38. The heater 10 has a pair of opposed end plates 43 to retain the insert 36.
The heater 10 has a pair of heating elements 44 and 45 secured to and substantially covering the outer surface 46 of the opposed walls 38, such that the heating elements 44 and 45 supply heat to the insert 36 and wet dressings W when current is supplied to the heating elernents 44 and 45. The heating ele-ments 44 and 45 may comprise an etched foil heater embedded in an elastic silicone rubber, such as the heating element sold by Electro-Flex Heat, Inc. of Bloomfield, Connecticut. The heater 10 has thermostats 4~, 50, and 52 secured to the insert 36 through openings 54 in the heating elements 44 and 45. With reference to Fig. 1, the heater 10 has a double pole single throw power switch 56 with a light 58 in the switch 56 to indi~
cate when the power to the heater 10 is on. Also, the heater 10 has a second light 60 to indica-te when the heater 10 is in an initial warming condition when the light is on.
A circuit 62 for the heater 10 is illustrated in Fig.
3. As shown, the heater 10 has a plug 64 which may be secured in a wall outlet to a source of electrical power. The plug 64 is connected by a pair of leads 66 and 68 to the switch 56~ such that the electrical power is disconnected ~rom the clrcui-t 62 when the switch 56 is open, and the electrical power is con-nected -to the circuit 62 when the switch 56 is closed. The switch 56 is connected to a pair of leads 70 and 72, and the light 58 is connected between the leads 70 and 72, such that the light 58 is lit when the switch 56 is closed, and the light 58 _~_ ~ ~ f ~ 9 ~'"t i~ l h is o~f when -the switch 56 ls open.
The lead 70 is connected to -the thermostats 48, 50, and 52, the thermostats 48 and 50 are connected by a lead 74 to the heating element 44, and the thermostat 52 is connected by a lead 76 to the heating element 45, with the heating elements 44 and 45 being connected to the lead 72 to complete the circuit.
As shown, the light 60 is in series with the thermostat 50 for a purpose which will be described below.
The desired temperature range of the wet dressings W
10 is between 115F and 120F, but when the wet dresslngs W are ini-tially at room temperature a greater amount of heating is required to bring them up to the desired temperature range. The upper and lower set points of the thermostats 48 and 52 are 135F and 115F, while the upper and lower set points of the 15 thermostat 50 are 145F and 100F. When the heater 10 is ini-tially turned on by the power switch 56, the three thermostats 48, 50, and 52 are all closed, such that current is supplied to the heaters 44 and 45, and the light 60 is lit indicating that the wet dressings W are in an initial heating condition. When 20 the thermostat 52 senses that the temperature associated with the heating element 45 is 135F, the thermostat 52 interrupts current to the heating element 45. When the thermos-ta-t 52 sub-sequently senses that the temperature associated with the heat-ing element 45 drops to 115F, the thermostat 52 again closes 25 and supplies current to the heating element 45. Subsequently, the ther~..ostat 52 interrupts current to the heating element 45 when the sensed temperature is 135F.
As previously indicated, when the power switch 56 is initially closed, both thermostats 4S and 50 are closed to sup-ply current to the heating element 44. When -the thermostat 48 senses that the temperature associated with the heating element 44 is 135F, the thermosta-t 48 interrupts current to the heating element 44. However, at this time, the thermostat 50 is still closed and continues to supply current to the heating element 44 until the sensed temperature associated with the heating element 44 is 145 at which time the thermostat 50 opens and interrupts current to the heating element 44. As a result, the light 60 in series with the thermostat 50 turns off, thus indicating that the initial heating period for the wet dressings W has been com-pleted. Next, when the thermostat 48 senses that the tempera-ture associated with the heating element 44 is 115F, the thermo-stat 48 closes and again supplies current to the heating element 44. Hence, the thermostat 50 will remain in an open configura~
tion since the temperature associated with the heating element 44 does not drop to its lower set point of 100F~ and thus the light 60 remains in an off condition. Subsequently, the thermo-stat 48 again interrupts current to the heating element 44 when the sensed temperature associated with the heating element 44 is 135F. In this manner, the thermostats 48 and 50 heat the wet dressings W a greater amount during the initial héating period in order to more rapidly obtain the desired temperature range of the wet dressings W. During operation of the heater 10 with the light 60 in an off condition, the thermostats 48 and 52 maintain the heating elements 44 and 45 at a temperature such as to main-tain the wet dressings W in the desired temperature range of115F to 120F.
In U5~, the lid 16 is moved to the open configuration, as illustrated in Fig. 1, and a plurality of wet dressings W are inserted into the recesses 40 of the insert 36. Next, the lid 16 may be moved to the closed configuration, as shown in Fig. 2, 4~, and the clamps 32 may be closed to lock the lid 16 onto the base 14. The power swi-tch 56 may be moved to the closed position, and the operator waits until the light 60 assumes the off condi-tion at which time the wet dressings W are ready for use. If desired, the wet dressings W may be maintained at the desired temperature range over a period of time, and the lid 16 may be moved to the open configuration, as shown in Fig. 1, in order to remove the wet dressings W from the recesses 40 for use on a patient.
With reference to Fig. 4 r a portion of another embodi-ment of the circuit is shown. In this embodiment, the light 60 is in parallel with the thermostats 48 and 50, with the rest of the circuit shown in Fig. 3 remaining the same. When the thermo-stats 48 and 50 are conducting, insufficient current passes through the light 60 to energize the light. ~ence, the light 60 turns off when the thermostats 48 and 50 are in a conducting state. The light 60 turns on when the thermostats 48 and 50 are not conducting to indicate that the dressings are heated and ready for use.
The foregoing detailed description is given for clear-ness of understanding only, and no unnecessary limitations should be understood therefrom, as modi~ications will be obvious to those skilled in the art.
Claims (21)
1. A heater for wet dressing comprising:
a case having a base with sidewalls defining a cavity;
an insert within the cavity of said base and defin-ing at least one narrow recess in said insert to receive wet dressings, said recess being capable of being heated;
an electrical heating element, electrically insu-lated with respect to said recess and located in close proximity to the insert recess within that portion of said cavity between the insert and the base, for heating the wet dressings;
electrical circuit means within said cavity inter-connecting said heating element and a source of electric current;
and means for controlling the temperature of the heat-ing element in the desired range of temperature of the wet dress-ings, said controlling means being a part of said electrical cir-cuit means and comprising;
first means for controlling current to the heating element and for sensing the temperature associated with the heat-ing element, said first means initially supplying current to the heating element until a first temperature is sensed substantially higher than the desired temperature range of the wet dressings, said first means interrupting current to the heating element at said first senses temperature, said first means again supplying current to the heating element at a second sensed temperature substantially below the range of desired temperature of the wet dressings, and said first means subsequently interrupting current to the heating element when said first temperature is sensed; and second means for controlling current to the heat-ing element and for sensing the temperature associated with the heating element, said second means initially supplying current to the heating element until a third temperature is sensed higher than the desired temperature range of the wet dressings and lower than said first temperature, said second means inter-rupting current to the heating element at said third sensed temperature, said second means again supplying current to the heating element at a fourth sensed temperature below the range of desired temperature of the wet dressings and higher than said second temperature, and said second means subsequently interrupt-ing current to the heating element when said third temperature is sensed.
a case having a base with sidewalls defining a cavity;
an insert within the cavity of said base and defin-ing at least one narrow recess in said insert to receive wet dressings, said recess being capable of being heated;
an electrical heating element, electrically insu-lated with respect to said recess and located in close proximity to the insert recess within that portion of said cavity between the insert and the base, for heating the wet dressings;
electrical circuit means within said cavity inter-connecting said heating element and a source of electric current;
and means for controlling the temperature of the heat-ing element in the desired range of temperature of the wet dress-ings, said controlling means being a part of said electrical cir-cuit means and comprising;
first means for controlling current to the heating element and for sensing the temperature associated with the heat-ing element, said first means initially supplying current to the heating element until a first temperature is sensed substantially higher than the desired temperature range of the wet dressings, said first means interrupting current to the heating element at said first senses temperature, said first means again supplying current to the heating element at a second sensed temperature substantially below the range of desired temperature of the wet dressings, and said first means subsequently interrupting current to the heating element when said first temperature is sensed; and second means for controlling current to the heat-ing element and for sensing the temperature associated with the heating element, said second means initially supplying current to the heating element until a third temperature is sensed higher than the desired temperature range of the wet dressings and lower than said first temperature, said second means inter-rupting current to the heating element at said third sensed temperature, said second means again supplying current to the heating element at a fourth sensed temperature below the range of desired temperature of the wet dressings and higher than said second temperature, and said second means subsequently interrupt-ing current to the heating element when said third temperature is sensed.
2. The heater of claim 1 in which the controlling means maintains the wet dressings in a temperature range of approximately 115°F. to 120°F.
3. The heater of claim 1 wherein said case has a lid removably covering said recess.
4. The heater of claim 3 including means for releas-ably attaching the lid to said base.
5. The heater of claim 1 wherein said sidewalls include insulation means.
6. The heater of claim 1 wherein said insert includes a plurality of recesses to receive wet dressings, and including a plurality of heating elements associated with said recesses.
7. The heater of claim 1 wherein the insert includes a pair of opposed walls defining said recess, and in which the heating element is secured to and substantially covers surfaces of said walls opposite said recess.
8. The heater of claim 1 wherein said heating element comprises an electrical heater imbedded in an elastic material.
9. The heater of claim 1 wherein the controlling means comprises at least one thermostat.
10. The heater of claim 1 wherein said first and sec-ond means comprise first and second thermostats.
11. The heater of claim 10 wherein the set points of said first thermostat are approximately 100°F. and 145°F.
12. The heater of claim 10 wherein the set points of said second thermostat are approximately 115°F. and 135°F.
13. The heater of claim 1 including means for indicat-ing when the wet dressings are in the desired temperature range.
14. The heater of claim 13 wherein the indicating means comprises a light.
15. The heater of claim 1 including means for indicat-ing when said first means is supplying current to the heating element.
16. The heater of claim 15 wherein the indicating means comprises a light.
17. The heater of claim 1 including means for indicat-ing when the first and second means interrupt current to the heating element.
18. The heater of claim 17 wherein the indicating means comprises a light.
19. A heater for wet dressings, comprising:
a case having a base with sidewalls defining a cavity, an insert within the cavity of the base and defining at least one narrow recess in the insert to receive wet dressings, the recess capable of being heated, electrical heating element means for said recess, means electrically insulating said heat-ing element with respect to said recess, and electrical circuit means within said case interconnecting said heating element and a source of electric current; and means for controlling the temperature of the heat-ing element in the desired range of temperature of the wet dress-ing said controlling means being a part of said electrical cir-cuit means and comprising:
first means for controlling current to the heating element and for sensing the temperature associated with the heating element, said first means initially supplying current to the heating element until a first temperature is sensed substan-tially higher than the desired temperature range of the wet dressings, said first means interrupting current to the heating element at first sensed temperature, said first means again sup-plying current to the heating element at a second sensed tempera-ture substantially below the range of desired temperature of the wet dressings and said first means subsequently interrupting current to the heating element when said first temperature is sensed; and second means for controlling current to the heat-ing element and for sensing the temperature associated with the heating element, said second means initially supplying current to the heating element until a third temperature is sensed higher than the desired temperature range of the wet dressings and lower than said first temperature, said second means inter-rupting current to the heating element at said third sensed temperature, said second means again supplying current to the heating element at a fourth sensed temperature below the range of desired temperature of the wet dressings and higher than said second temperature, and said second means subsequently interrupt-ing current to the heating element when said third temperature is sensed.
a case having a base with sidewalls defining a cavity, an insert within the cavity of the base and defining at least one narrow recess in the insert to receive wet dressings, the recess capable of being heated, electrical heating element means for said recess, means electrically insulating said heat-ing element with respect to said recess, and electrical circuit means within said case interconnecting said heating element and a source of electric current; and means for controlling the temperature of the heat-ing element in the desired range of temperature of the wet dress-ing said controlling means being a part of said electrical cir-cuit means and comprising:
first means for controlling current to the heating element and for sensing the temperature associated with the heating element, said first means initially supplying current to the heating element until a first temperature is sensed substan-tially higher than the desired temperature range of the wet dressings, said first means interrupting current to the heating element at first sensed temperature, said first means again sup-plying current to the heating element at a second sensed tempera-ture substantially below the range of desired temperature of the wet dressings and said first means subsequently interrupting current to the heating element when said first temperature is sensed; and second means for controlling current to the heat-ing element and for sensing the temperature associated with the heating element, said second means initially supplying current to the heating element until a third temperature is sensed higher than the desired temperature range of the wet dressings and lower than said first temperature, said second means inter-rupting current to the heating element at said third sensed temperature, said second means again supplying current to the heating element at a fourth sensed temperature below the range of desired temperature of the wet dressings and higher than said second temperature, and said second means subsequently interrupt-ing current to the heating element when said third temperature is sensed.
20. The heater of claim 19 including means for indicat-ing when the first and second means interrupt current to the heating element, said indicating means comprising a light.
21. A heater for wet dressings, comprising:
a case having a base with sidewalls defining a cavity;
an insert within the cavity of said base and defin-ing at least a pair of generally vertically oriented parallel recesses in said insert, each said recess being in the form of a slot and having substantial width and depth dimensions and a narrow transverse dimension so as to receive a generally flat wet dressing therein, said recesses capable of being heated;
an electrical heater imbedded in an elastic mate-rial for each said recess, each heater thus being electrically insulated from its respective recess, each recess further includ-ing opposed walls having inner surfaces, defining the slot to receive a wet dressing, and outer surfaces facing said cavity, said heater being directly secured to and substantially covering said outer surfaces of the opposed walls of the recess associated therewith;
electrical circuit means within said cavity inter-connecting said heating element and a source of electric current;
and means for controlling the temperature of the heat-ing element in the desired range of temperature of the wet dress-ings, said controlling means being a part of said electrical circuit means.
a case having a base with sidewalls defining a cavity;
an insert within the cavity of said base and defin-ing at least a pair of generally vertically oriented parallel recesses in said insert, each said recess being in the form of a slot and having substantial width and depth dimensions and a narrow transverse dimension so as to receive a generally flat wet dressing therein, said recesses capable of being heated;
an electrical heater imbedded in an elastic mate-rial for each said recess, each heater thus being electrically insulated from its respective recess, each recess further includ-ing opposed walls having inner surfaces, defining the slot to receive a wet dressing, and outer surfaces facing said cavity, said heater being directly secured to and substantially covering said outer surfaces of the opposed walls of the recess associated therewith;
electrical circuit means within said cavity inter-connecting said heating element and a source of electric current;
and means for controlling the temperature of the heat-ing element in the desired range of temperature of the wet dress-ings, said controlling means being a part of said electrical circuit means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US397,302 | 1982-07-12 | ||
| US06/397,302 US4419568A (en) | 1982-07-12 | 1982-07-12 | Wet dressings heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1201742A true CA1201742A (en) | 1986-03-11 |
Family
ID=23570660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000432158A Expired CA1201742A (en) | 1982-07-12 | 1983-07-11 | Wet dressings heater |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4419568A (en) |
| CA (1) | CA1201742A (en) |
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| US4812616A (en) * | 1987-03-05 | 1989-03-14 | Hong Andrew M P | Apparatus for electrically heating soft roller hair curlers |
| DK163033C (en) * | 1987-10-02 | 1992-06-15 | Sven Karl Lennart Goof | APPLIANCES FOR STERILIZATION OF ARTICLES |
| FR2629569B1 (en) * | 1988-03-29 | 1990-08-17 | Armines | METHOD AND APPARATUS FOR COOKING OR HEATING A FOOD USING WATER VAPOR |
| US5215000A (en) * | 1988-03-29 | 1993-06-01 | A.R.M.I.N.E.S. | Method and apparatus for thermal treatment of alimentary substances |
| US4857708A (en) * | 1988-05-02 | 1989-08-15 | Demars Robert A | Towelette heating device |
| US5004894A (en) * | 1988-10-03 | 1991-04-02 | Jimmy Whitehead | Cloth warmer |
| US5736714A (en) * | 1992-11-24 | 1998-04-07 | Bechtold, Jr.; Joseph A. | Portable towel heating appliance with accessories |
| US5397875A (en) * | 1992-11-24 | 1995-03-14 | Bechtold, Jr.; Joseph A. | Portable appliance for heating towels and for dispensing heated fluid such as body oil to facilitate the administration of a massage |
| US5977520A (en) * | 1995-08-04 | 1999-11-02 | Madson, Jr.; Lawrence E. | Heating unit for therapeutic moist heat packs |
| US5730721A (en) * | 1996-01-25 | 1998-03-24 | Vesture Corporation | Medical applicator and method |
| US6824528B1 (en) | 1997-03-03 | 2004-11-30 | Medical Solutions, Inc. | Method and apparatus for pressure infusion and temperature control of infused liquids |
| US7276675B2 (en) | 1997-04-07 | 2007-10-02 | Patented Medical Solutions, Llc | Medical item thermal treatment systems and method of monitoring medical items for compliance with prescribed requirements |
| US6467953B1 (en) | 1999-03-30 | 2002-10-22 | Medical Solutions, Inc. | Method and apparatus for monitoring temperature of intravenously delivered fluids and other medical items |
| US6660974B2 (en) | 1997-04-07 | 2003-12-09 | Medical Solutions, Inc. | Warming system and method for heating various items utilized in surgical procedures |
| US7041941B2 (en) | 1997-04-07 | 2006-05-09 | Patented Medical Solutions, Llc | Medical item thermal treatment systems and method of monitoring medical items for compliance with prescribed requirements |
| WO1998045658A1 (en) * | 1997-04-07 | 1998-10-15 | Medical Solutions, Inc. | Warming system and method for heating various items utilized in surgical procedures |
| US6768085B2 (en) | 2001-07-02 | 2004-07-27 | Medical Solutions, Inc. | Medical solution warming system and method of heating and maintaining medical solutions at desired temperatures |
| WO2000024227A1 (en) * | 1998-10-16 | 2000-04-27 | Medical Solutions, Inc. | Temperature control system and method for heating and maintaining medical items at desired temperatures |
| US6316750B1 (en) * | 1999-04-12 | 2001-11-13 | Andrew Levin | Apparatus for warming medical pads |
| WO2001026516A2 (en) | 1999-10-08 | 2001-04-19 | Medical Solutions, Inc. | Temperature controlled cabinet system and method for heating medical items to desired temperatures |
| US6433313B1 (en) * | 2000-02-15 | 2002-08-13 | Vesture Corporation | Apparatus and method for heated food delivery |
| US6353208B1 (en) * | 2000-02-15 | 2002-03-05 | Vesture Corporation | Apparatus and method for heated food delivery |
| US6384387B1 (en) | 2000-02-15 | 2002-05-07 | Vesture Corporation | Apparatus and method for heated food delivery |
| NO312152B1 (en) * | 2000-02-16 | 2002-04-02 | Knut Magne Hansen | Apparatus for charging heating pad / gasket |
| US7031602B2 (en) | 2001-03-12 | 2006-04-18 | Patented Medical Solutions, Llc | Method and apparatus for controlling temperature of infused liquids |
| US7238171B2 (en) | 2001-03-12 | 2007-07-03 | Medical Solutions, Inc. | Method and apparatus for controlling pressurized infusion and temperature of infused liquids |
| US8226605B2 (en) | 2001-12-17 | 2012-07-24 | Medical Solutions, Inc. | Method and apparatus for heating solutions within intravenous lines to desired temperatures during infusion |
| US7560667B2 (en) * | 2004-08-24 | 2009-07-14 | C Change Surgical Llc | Heating element for liquid warming device |
| US7854387B2 (en) | 2004-08-24 | 2010-12-21 | C Change Surgical Llc | Open access sleeve for heated fluid units |
| US7128275B2 (en) * | 2004-08-24 | 2006-10-31 | C Change Surgical Llc | Liquid warming device with basin |
| US8309891B2 (en) * | 2004-08-24 | 2012-11-13 | C Change Surgical Llc | Adapter for use with a liquid warming device |
| NL1030436C2 (en) * | 2005-11-16 | 2007-05-21 | Joyincare Group B V | Device for heating wipes, and method for applying such a device. |
| US8487738B2 (en) | 2006-03-20 | 2013-07-16 | Medical Solutions, Inc. | Method and apparatus for securely storing medical items within a thermal treatment system |
| US8357128B2 (en) * | 2009-10-20 | 2013-01-22 | Shrikant S Bhamre | Portable eye-wiping device |
| TWM413389U (en) * | 2011-02-02 | 2011-10-11 | Eric Chen | Heating and thermal insulation device used for various adhesive films of skin patch |
| US9211381B2 (en) | 2012-01-20 | 2015-12-15 | Medical Solutions, Inc. | Method and apparatus for controlling temperature of medical liquids |
| WO2014126964A1 (en) | 2013-02-15 | 2014-08-21 | Medical Solutions, Inc. | Plural medical item warming system and method for warming a plurality of medical items to desired temperatures |
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|---|---|---|---|---|
| US1979222A (en) * | 1933-09-13 | 1934-10-30 | Allie J Goodwin | Cabinet |
| US2059911A (en) * | 1935-06-05 | 1936-11-03 | Stephen F Rebora | Toaster |
| US2376611A (en) * | 1941-09-27 | 1945-05-22 | Renim Inc | Wet-pack sterilizer |
| US2356684A (en) * | 1941-10-25 | 1944-08-22 | Renim Inc | Surgical pad sterilizer |
| US2415238A (en) * | 1943-01-26 | 1947-02-04 | John H Emerson | Apparatus for preparing compresses |
| US2443321A (en) * | 1944-07-28 | 1948-06-15 | Renim Inc | Moist pack heater |
| US3678248A (en) * | 1971-03-15 | 1972-07-18 | Yves P Tricault | Household dish-heating appliance |
| US3902044A (en) * | 1972-11-20 | 1975-08-26 | Schick Inc | Electrically heated towel steaming appliance |
| US3879171A (en) * | 1973-09-17 | 1975-04-22 | Becton Dickinson Co | Electric heating assembly for sterilant packages |
| US4084080A (en) * | 1976-09-28 | 1978-04-11 | Mcmahan William T | Towel heater and dispenser |
| US4163896A (en) * | 1977-06-29 | 1979-08-07 | The Kendall Company | Wet dressing heating system |
-
1982
- 1982-07-12 US US06/397,302 patent/US4419568A/en not_active Expired - Lifetime
-
1983
- 1983-07-11 CA CA000432158A patent/CA1201742A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4419568A (en) | 1983-12-06 |
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