Refrigeration – Structural installation – With body applicator
Reexamination Certificate
2000-02-19
2001-08-28
Doerrler, William (Department: 3744)
Refrigeration
Structural installation
With body applicator
C165S046000, C607S104000
Reexamination Certificate
active
06279338
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention is in the medical field. During treatment of fever, making cold compresses (cold fomentations) is frequently required. The usual method is by using a piece of cloth, gauze or towel put in cold water and put on patient's forehead or limb. This method is annoying to the patient because it wets the patient and his clothes, and also the sudden touch of the cold object also annoys the feverish patient. Another method is by using bag containing ice; also water vapour condenses on the ice bag which becomes wet. These problems can be solved by this invention which depends on usage of a rubber bladder (bag) which is cooled by passing cold air inside it. This bladder is used to make cold compresses (cold fermentations) to the patient. This method is easy and dry, and also the bladder is put on the patient's forehead or limb first and then gradually cooled so not annoying the feverish patient by sudden touch of cold object.
The cold air depending apparatus is easy to manufacture, may be not expensive, light, and if leakage occurred from the apparatus; leakage of air is less problematic than leakage of fluid or form.
BRIEF SUMMARY OF THE INVENTION
This apparatus consists of a bladder (or a bag) made of rubber (or any other suitable material), this bladder is connected to two rubber tubes. The two rubber tubes connected to the bladder are; one input tube that conducts cold air from an air cooling unit to the bladder, and the other is an output tube that conducts air from the bladder to the air cooling unit to be cooled again. The air cooling unit is an air conditioning unit like those used in houses or cars but of small suitable size. The air cooling unit contains also a fan for making air circulate in the tubing and contains a thermostat to control the temperature of the outer surface of the bladder. The thermostat sensor and a thermometer are connected to the outer surface of the bladder. The bladder is put on the patient's forehead or wrapped around the patient's limb to lower his temperature after cooling the bladder.
The advantages of this invention is that it is easy to manufacture, not much expensive, is ready to use (does not need preparation as in case of usual cold fomentations), does not wet the patient or his clothes, the bladder is put on the patient first and then gradually cooled so not annoying him by sudden touch of cold object, the cooling temperature of the apparatus is adjustable and well—controlled and stabilized by the thermostat, the apparatus is suitable for home or hospital use, can be used by the patient alone without assistance, the cooling unit can be connected to 5 bladders (one on the forehead and one for each limb of the patient) for more rapid and effective procedure, the apparatus is of small size and weight, no problems if leakage occurs unlike in case of using fluid or foam to circulate in the tubing.
REFERENCES:
patent: 4259961 (1981-04-01), Hood, III
patent: 4691762 (1987-09-01), Elkins et al.
patent: 5344436 (1994-09-01), Fontenot et al.
patent: 5417720 (1995-05-01), Mason
patent: 5456701 (1995-10-01), Stout
patent: 5507792 (1996-04-01), Mason et al.
patent: 5755275 (1998-05-01), Rose et al.
Doerrler William
Jiang Chen-Wen
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