Self-propelling medicinal ointment composition containing polyethylene and method ofapplication

Claim 1

IN A SELF-PROPELLING FLUID MEDICINAL OINTMENT COMPOSITION FOR THE TREATMENT OF BODY SURFACE BURNS AND OTHER WOUNDS, THE COMPOSITION BEING CONTAINED IN AND ADAPTED TO BE ATOMIZED FROM A FLUID-TIGHT VALVED CONTAINER DIRECTLY ONTO THE BURNS OR OTHER WOUNDS, SAID MEDICINAL OINTMENT COMPOSITION INCLUDING A MEDICAMENT AN OINTMENT BASE AND AN INERT LIQUIFIED COMPRESSED GASEOUS PROPELLANT, THE IMPROVEMENT IN WHICH THE MEDICINAL OINTMENT COMPOSITION COMPRISES APPROXIMATELY 0.1% BY WEIGHT OF THE MEDICAMENT, FROM APPROXIMATELY 10% TO APPROXIMATELY 30% BY WEIGHT OF THE OINTMENT BASE AND THE PROPELLENT CONSTITUTING ESSENTIALLY THE REMAINDER OF THE COMPOSITION AND IN WHICH THE MEDICAMENT AND OINTMENT BASE ARE DISPERSED, SAID OINTMENT BASE BEING COMPOSED OF A HEAVY MINERAL OIL CONTAINING POLYETHYLENE DISPERSED THEREIN IN THE FORM OF SMALL CRYSTALLITES SURROUNDED BY LONG FILAMENTS OF aMORPHOUS POLYETHYLENE RESIN, SAID POLYETHYLENE HAVING A MOLECULAR WEIGHT OF AT LEAST 3,500 AND COMPRISING FROM APPROXIMATELY 0.25% TO APPROXIMATELY 50% BY WEIGHT OF THE OINTMENT BASE, SAID MEDICINAL OINTMENT COMPOSITION WHEN SPRAYED FROM THE CONTAINER ONTO A BURNED OR WOUNDED AREA OF THE BODY SURFACE BY THE PROPELLANT HAVING THE PROPERTY OF PRODUCING A NON-RUNNING COATING OF THE OINTMENT BASE CONTAINING THE MEDICINAL DISPERSED THEREIN SAID POLYETHYLENE CONTENT OF THE OINTMENT BASE BEING DEPOSITED BY THE PROPELLANT IN A LOOSE DISPERSION OF INTERLACED FILAMENTS FORMING A LATTICE OF POLYETHYLENE FILAMENTS HAVING A POROUS SPONGY STRUCTURE HOLDING THE MEDICINAMENT ON THE BURNED OR WOUNDED AREA OF THE SKIN AND PERMITTING ACCESS OF AIR AND OXYGEN TO THE BURNED OR WOUNDED AREA OF THE SKIN, WHEREBY HEALING OF THE BURNED OR OTHER WOUND IS FACILITATED.