Surgery – Means for introducing or removing material from body for... – Treating material applied to or removed from external...
Patent
1994-09-26
1997-09-02
Hafer, Robert A.
Surgery
Means for introducing or removing material from body for...
Treating material applied to or removed from external...
602 2, 602 42, 602 57, 602 54, 602 43, A61F 500
Patent
active
056626240
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a self-adhesive heat dressing for use in local treatment of skin and body areas.
Heat is widely used for treatment of minor nuisances, such as infiltrations and muscular tensions.
In most cases, the heat treatment is capable of removing or minimizing these nuisances by a relatively short treatment. Heat is also used as an analgesic e.g. for menstrual pain. Heat treatment is particularly important for treatment of rheumatism. Rheumatism cannot be cured, but the heat treatment can ease the worst pain.
Heat treatment has also been found to have significant effect for reducing skin lesions, such as e.g. psoriasis plaques. An article by Harukuni Urabe, MD, Keiko Mishitani, MD, Hiromu Konda, MD: Hyperthermia in the Treatment of Psoriasis. Arch. Dermatol.--Vol. 117, December 1981, pp. 770-774, mentions an experiment in which psoriasis has successfully been treated with heat. The treatment lasted for 13-53 days. The heat dressing was changed 2-3 times a day, and in each period the skin temperature was raised to between 42.degree. and 43.degree. C., which temperature was maintained for more than 2 hours.
For many years it has been known that the temperature is of great importance for regeneration of tissue, and thus also for the healing process in a wound area. In particular, attention has been given to the fact that a lowered temperature in a wounded area causes reduced metabolism and consequently reduced wound-healing. This is in complete agreement with the knowledge that when transplanting tissue the greatest success is achieved when the tissue graft has been cooled during the process. By cooling and consequent reduced metabolism, the life time of the tissue is thus increased.
Over the last few decades occlusive treatment of wounds has been increasingly used, and everything indicates that within not to long a time occlusive treatment of various kinds of wounds, such as burns, operative wounds, bed sores, leg sores, and diabetic wounds, will be the most commonly used method of treatment.
The great success of the occlusive method of treatment is largely due to the moist wound environment, which a number of examinations have shown i.e. causes an increased migration of epithelial cells. More recent experiments have, however, shown that the isolating effect of the occlusive method of treatment also plays an important part for the wound-healing. By occlusive treatment, the treated skin and wound areas are isolated, which may result in a slight increase in the surface temperature of the skin and wound areas. Thus, it is not an active heating, but only a shielding, whereby the heat loss from the surface of the skin and wound areas is minimized.
In spite of the fact that there is thus an indication that the temperature in a wounded skin area has significant influence on the healing process, and that by raising the temperature it is possible to increase the speed of healing, use of sustained heat for local treatment of wounds has as far as known not yet been used in practice.
For such nuisances in body and skin areas which it is known to treat with heat, the heat is usually applied by heat ray impact. It is often a matter of heat treatment of larger body and skin areas, but also local heat treatment is performed by means of heat rays.
Treatment with heat rays can, however, only be performed within the framework of hospitals or clinics, and is furthermore very expensive both as regards equipment and staff costs.
Usually the heat treatment must be performed several hours daily to obtain an efficacious effect. In particular when treating rheumatism and, which has been found at a later date, when treating wounds, a continuous treatment is required.
Thus, it is not only very expensive but also exacting on the patients' patience each day to have to go through hours of treatment with heat rays.
Another commonly known method of heat treatment is treatment with heat bags or heat pads. This mode of treatment is used in particular for minor nuisances, and the treatment is
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Samuelsen Peter Boman
Sch.o slashed.nfeldt Lars
Sundstrom Staffan
Coloplast A/S
Hafer Robert A.
Rodriguez Cris L.
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