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WO1994016653A1 - Structures de chauffage pour applications kinesitherapeutiques - Google Patents

Structures de chauffage pour applications kinesitherapeutiques Download PDF

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Publication number
WO1994016653A1
WO1994016653A1 PCT/US1994/000533 US9400533W WO9416653A1 WO 1994016653 A1 WO1994016653 A1 WO 1994016653A1 US 9400533 W US9400533 W US 9400533W WO 9416653 A1 WO9416653 A1 WO 9416653A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
oxidizer
heat pack
heat
chamber
Prior art date
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.)
Ceased
Application number
PCT/US1994/000533
Other languages
English (en)
Inventor
Gary V. Steidl
Cullen M. Sabin
Douglas J. Korn
Robert H. Cassar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GLOBAL THERMAL TECHNOLOGIES Inc
Original Assignee
GLOBAL THERMAL TECHNOLOGIES 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 GLOBAL THERMAL TECHNOLOGIES Inc filed Critical GLOBAL THERMAL TECHNOLOGIES Inc
Priority to AU61628/94A priority Critical patent/AU6162894A/en
Publication of WO1994016653A1 publication Critical patent/WO1994016653A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A61F7/03—Compresses or poultices for effecting heating or cooling thermophore, i.e. self-heating, e.g. using a chemical reaction
    • 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
    • A61F2007/0268—Compresses or poultices for effecting heating or cooling having a plurality of compartments being filled with a heat carrier
    • A61F2007/0276—Compresses or poultices for effecting heating or cooling having a plurality of compartments being filled with a heat carrier with separate compartments connectable by rupturing a wall or membrane

Definitions

  • the simplest heat packs use hot water bottles wrapped in towels which are then pressed upon the treatment area.
  • typical hot water bottles are difficult to use as most of the different body parts treated by the hot pack are not flat.
  • a rigid hot water bottle such as a cylindrically shaped metal or plastic container, only a small portion of the bottle will contact the skin. Further, due to the effects of gravity, the low viscosity hot fluid will tend to pool in the lowest areas of the bottle. Even if a hot water bottle made of a flexible rubber is used, the water will tend to pool in the lowest areas of the bottle. As a result, the treatment area is heated unevenly, resulting in the portions closest to the heated fluid being heated more than the remoter areas.
  • a moist heat pack such as the Hydrocollator available from Chattanooga Corporation.
  • the Hydrocollator comprises a flexible container such as a canvas bag containing several compartments filled with a water saturable clay-like medium having a relatively high heat capacity.
  • the heat pack Before application of the heat pack to the treatment area, the heat pack is heated by, for example, immersing the pack in a hot water bath at 170° F.
  • the pack may be warmed by a micro-wave oven or by an electric heater.
  • the pack is then placed in towels or in a special cover with the moist heat being wicked through the cover to the treatment area.
  • Such special covers may further include velcro covered straps for securing the heat pack to the body of the patient.
  • the clay filled heat packs also have disadvantages.
  • the heat packs cool off over a period of time. Initially the heat pack is at an elevated temperature and eventually it cools to the ambient temperature.
  • the only means typically available for controlling the heat applied to the treatment area is to add or remove towels to retard or accelerate the heat transfer.
  • the duration of the heat treatment is not readily controlled and depends upon the number of towels used and the amount of heat absorbed from the medium having the high heat capacity.
  • An additional problem for such heat packs is the weight of the high heat capacity medium.
  • a liquid based polymerizable fuel/water mixture used with a complementary oxidizer.
  • the fuel/water mixture is stored in an inner bag and the oxidizer is stored in the outer bag.
  • the fuel/water mixture contains excess fuel and the inner bag is of a weaker construction than the outer bag.
  • the inner bag is ruptured and the ingredients are mixed to produce heat.
  • non- water soluble, non-organic acids are preferably formed to polymerize some of the fuel, causing the viscosity of the mixture to increase to that of a gel.
  • the gel keeps the reactants from flowing away from the treatment area when the treatment area is not a level surface.
  • a thin sponge is attached to the outside of the heater. Before initiating the chemical reaction, the sponge is saturated with water to provide moist heat.
  • the concentrations and amount of the oxidizer and the fuel can be carefully controlled.
  • Figure 1 shows a top plan view of an embodiment of the disclosed invention.
  • Figure 2 shows a cross sectional view of an embodiment of the invention taken along line 2-2 in Figure 1 .
  • Figure 3 shows a cross sectional view of a second embodiment of the invention.
  • Figure 4 shows a plot of a typical temperature profile of the embodiment of the invention shown in Figure 1 .
  • Figure 1 shows a cross-sectional view of a first embodiment 10 of the invention.
  • the embodiment 10 comprises an inner fuel bag 20 (Figure 2) placed within an outer bag 30 containing a complementary oxidizer.
  • Figure 2 may have other shapes to conform better to the treatment area such as a ring (not shown), which may be used for treating limbs of the patient.
  • the inner bag is preferably made of a flexible material such as a plastic film like polyethylene or mylar and preferably has one or more weakened seams 22.
  • the inner bag 20 acts as barrier to prevent the fuel from mixing with the oxidizer until the desired time and is of a weaker construction than the outer bag 30.
  • the inner bag 20 ruptures.
  • other structures may be used to separate the oxidizer from the fuel by a barrier (not shown) and then rupturing the barrier to combine the fuel with the oxidizer such as those shown in U.S. Patent No. 5,035,230.
  • the fuel may be placed in the outer bag 30 and the oxidizer may be placed in the inner bag 20.
  • the user should preferably knead the heat pack to provide a more uniform reaction.
  • the inner bag 10 is preferably filled to the maximum capacity with a fuel/water mixture 24 such as a glycerine/water mixture.
  • the glycerine/water mixture is 90% by volume glycerine and 10% by volume water.
  • alternative fuels may be used such as a fuel/water mixture with the fuel component being glycerine, sugar or corn syrup, molasses, sorghum syrup or ethylene glycol. Any other water soluble substance that undergoes an exothermic reaction when oxidized and is polymerized by the resultant products of the reaction may be used.
  • the polymerization should provide an increase of at least three orders of magnitude of the viscosity of the combined fuel/oxidizer mixture, resulting in a desired viscosity in the range of 10 6 to 10 9 centipoise.
  • the increased viscosity of the fluids is desirable as it inhibits the flow of the combined fuel/oxidizer mixture due to gravity and thus permits more even heating of the treatment area.
  • the outer bag 30 is preferably made of polyethelyene, polypropylene or mylar film.
  • the film of the outer bag 30 may be coated with a thin layer of a non-toxic heat conductive metal.
  • the outer bag 30 typically contains the oxidizer, preferably a potassium permanganate based oxidizer mixed with water.
  • the oxidizer is preferably only partially soluble in water (about 6.6 in 100 parts is preferable) so that the outer bag contains a mixture of a weak solution and particles of the oxidizer.
  • the oxidizer may be bound within a binding agent for better control of the reaction rate.
  • potassium permanganate (KMnO 4 ) may be bound with 4.5 grams of a sodium silicate/water binding agent slurry.
  • the sodium silicate/water slurry is preferably 85 % sodium silicate (Na 2 SiO 3 ) by volume and 15 % water by volume and may be obtained from J.T. Baker Co.
  • other polar inorganic solvents may be used.
  • the potassium permanganate/sodium silicate/water mixture may then be diluted by partially dissolving the oxidizer in 200 cubic centimeters of water.
  • Inorganic binders such as sodium silicate should be used if the fuel is mixed with an inorganic solvent such as water while an organic binder should be used if the solvent for the fuel is an organic chemical.
  • an exothermic reaction starts, quickly heating the heat pack up to a maximum temperature that is preferably less than 85°C.
  • the reaction produces non-water soluble, inorganic, non-toxic acids or other chemicals that polymerize some of the remaining fuel at the temperature of interest.
  • An end product of the reaction may include non-water soluble, inorganic acids, which polymerize the excess fuel at the temperatures of interest, about 35°C to 85°C.
  • the polymerized excess fuel increases the viscosity of the mixture by several orders of magnitude, from, for example, about 1 ,000 centipoise for a glycerine fuel mixture to greater than 10 6 , and preferably greater than 10 9 centipoise.
  • the typical desired increase in viscosity should result in a gel or jelly-like substance.
  • the amount of excess fuel needed depends upon the particular fuel and oxidizer chemistry, the amount of diluting materials such as water and any binders, the desired resulting viscosity of the polymerized fuel, and the desired time for heat treatment of the patient. However, typically more than 50% of the total fuel originally contained within the inner bag will not be oxidized during the heating period.
  • the amount and type of fuel, oxidizer, binder and diluent are also important to control the reaction rate, which affects the peak temperature, viscosity, and the temperature of the heat pack over time (the temperature time profile). Typically, the greater the viscosity of the resultant fluid, the slower the reaction rate.
  • Table 1 shows the heat output for the ratio of a sodium silicate binder to water diluent binding potassium permanganate when used with an ethylene glycol fuel.
  • outer bag 20 will effect the temperature and may be experimentally
  • Figure 4 shows a temperature profile for a heater made
  • the inner bag was filled to capacity with a fuel comprised of 40
  • thermocouple placed approximately
  • thermocouple positioned about 1 .5
  • a sponge 40 is attached to at least one surface of the outer bag
  • the sponge 40 may be formed of celluose or
  • a disposable, cloth-like material comprised of a scrim
  • the sponge is saturated with water or a liquid ointment.
  • saturated sponge may act as a heat sink initially, lowering the peak
  • reaction rate is slowed so that the reaction takes longer to complete.
  • the sponge 40 may be preloaded
  • the heat pack may after activation
  • the disclosed heat packs are lighter
  • embodiments exhibit more uniform temperature/time profiles as the
  • temperature/time profile may be carefully controlled by controlling the amount of water in the sponge, by the selection of the binder,

Landscapes

  • 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)

Abstract

L'invention concerne une nouvelle forme de sac chauffant (10) pour traiter les patients subissant une kinésithérapie, et un procédé de chauffage d'une partie du corps d'un patient, pratiqué en kinésithérapie. Le procédé consiste à utiliser une réaction exothermique où le combustible utilisé dans le sac chauffant (10) est polymérisable et le combustible excédentaire est polymérisé afin d'augmenter la viscosité du fluide (20) contenu dans le sac chauffant (10) par au moins environ trois niveaux d'amplitude.
PCT/US1994/000533 1993-01-19 1994-01-19 Structures de chauffage pour applications kinesitherapeutiques Ceased WO1994016653A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU61628/94A AU6162894A (en) 1993-01-19 1994-01-19 Heater structures for physical therapy applications

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US557793A 1993-01-19 1993-01-19
US005,577 1993-01-19

Publications (1)

Publication Number Publication Date
WO1994016653A1 true WO1994016653A1 (fr) 1994-08-04

Family

ID=21716576

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/000533 Ceased WO1994016653A1 (fr) 1993-01-19 1994-01-19 Structures de chauffage pour applications kinesitherapeutiques

Country Status (2)

Country Link
AU (1) AU6162894A (fr)
WO (1) WO1994016653A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1332741A3 (fr) * 2002-01-31 2003-10-15 Uni-Charm Corporation Outil de chauffage stratifié
EP1079773A4 (fr) * 1998-05-21 2004-09-29 Tempra Tech Inc Sachet chauffant a autoregulation
EP1055088A4 (fr) * 1998-02-11 2005-04-20 Tempra Tech Inc Contenant a chauffer du liquide

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4397315A (en) * 1981-09-16 1983-08-09 The Kendall Company Dressing with temperature pack
US4868898A (en) * 1988-08-12 1989-09-19 Hiroshi Seto Electrically heated portable seat
US4967573A (en) * 1989-12-04 1990-11-06 Wilhelm Raymond P Thermal pack

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4397315A (en) * 1981-09-16 1983-08-09 The Kendall Company Dressing with temperature pack
US4868898A (en) * 1988-08-12 1989-09-19 Hiroshi Seto Electrically heated portable seat
US4967573A (en) * 1989-12-04 1990-11-06 Wilhelm Raymond P Thermal pack

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1055088A4 (fr) * 1998-02-11 2005-04-20 Tempra Tech Inc Contenant a chauffer du liquide
EP1079773A4 (fr) * 1998-05-21 2004-09-29 Tempra Tech Inc Sachet chauffant a autoregulation
CN1298302C (zh) * 1998-05-21 2007-02-07 坦普拉技术公司 自调节热包
EP1733706A3 (fr) * 1998-05-21 2010-04-28 Tempra Technology, Inc. Sachet chauffant à autorégulation
EP1332741A3 (fr) * 2002-01-31 2003-10-15 Uni-Charm Corporation Outil de chauffage stratifié
US7234458B2 (en) 2002-01-31 2007-06-26 Uni-Charm Corporation Laminated heating body

Also Published As

Publication number Publication date
AU6162894A (en) 1994-08-15

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