Surgery: splint – brace – or bandage – Bandage structure – Skin laceration or wound cover
Reexamination Certificate
2000-03-27
2003-09-09
Lewis, Kim M. (Department: 3761)
Surgery: splint, brace, or bandage
Bandage structure
Skin laceration or wound cover
C602S042000, C602S054000, C604S304000, C604S306000, C604S307000, C424S447000, C424S448000
Reexamination Certificate
active
06617486
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a first aid adhesive plaster for healing a wound by applying a pad with a layer of an ointment onto an affected part of skin such as an incised wound.
2. Prior Art
Various types of the first aid adhesive plaster have been on market for sale. For example, a plaster is well known in which a pad of gauze, impregnated with a liquid medicament for treating an infection or for healing a wound and then dried, is adhered onto a middle part of an upper surface of an adhesive sheet, and the upper surface of the pad is covered with a release sheet which is separable in the right and left directions. However, in such an adhesive plaster with the above-mentioned composition, since the liquid medicament is dry, there is a fear that the affected part of skin such as a wound (“a wound” hereinafter) may be hurt, and further effective sterilizing and healing effects cannot be obtained even if the pad is applied onto the wound, unless the dried liquid medicine is dissolved and exuded by a secretion from the wound.
In view of the above circumstances, a first aid adhesive plaster has been developed in which a capsule occluding a liquid medicament is laid over an upper surface of a pad without impregnating the pad with the liquid medicament nor being hardened. When the first aid adhesive plaster is used, by pressing the upper surface of the capsule ruptures a film of aluminum foil which forms a bottom of the capsule, so that the liquid medicine occluded in the capsule may be flown out and impregnated in the pad.
However, in the first aid adhesive plaster as above-mentioned, since a liquid medicament has to be occluded in the capsule, it only requires considerable manufacturing processes and wherefore high manufacturing cost, but also requires to rupture the film when the first aid adhesive plaster is used as above-mentioned. Therefore, it may sometimes happen that the liquid medicament splashes and cannot accurately be impregnated in the pad. Further, in case the film is ruptured when the pad is in a slanting position, there is a fear that a part of the liquid medicament remaining therein, and as a result, a volume of the medicament to work on the wound is reduced whereby healing effect weakened. Still further, because the liquid medicament with high fluidity is applied to all of the above-mentioned first aid adhesive plasters, the surface of the pad directly touches the wound, and therefore removal of the pad from the wound causes a pain, and the wound reopens. As a result, complete recovery is delayed.
In view of the above-mentioned circumstances, a first aid adhesive plaster with a pad applied with an ointment instead of liquid medicament is required. However, in case the pad applied with a layer of the ointment is covered with a release paper, there is a fear that the ointment is dried in a short period of time or the effect of the ointment is considerably weakened due to a change of quality by an influence of air coming from a gap between the adhesive sheet and the release paper. Further, even if the ointment is completely sealed up, when external pressure is given to the surface of the release paper while the first aid adhesive plaster is being carried or when the same is being used, there may be the cases that the ointment is squeezed out of the pad and becomes unable to be used. In addition, when the release paper is removed, a part of the ointment is transferred to the back of the release paper, and a volume of the ointment to work on the wound is reduced just like the above-mentioned liquid medicament which is occluded in a capsule.
In case the ointment is occluded in the above-mentioned capsule in order to solve such problems like the change in quality and the squeeze and crush of the ointment by unexpected external pressure, there is a problem that it is difficult to transfer a large volume of the ointment onto the pad even if the capsule is pressed to be deformed by which pressure the film of an aluminum foil forming the bottom of the capsule is raptured, as the ointment is already adhered to the inner surface of the capsule.
SUMMARY OF THE INVENTION
In view of the above-mentioned circumstances, this invention has an object to provide a first aid adhesive plaster in which an ointment stuck or applied onto a pad can be sealed up without causing a change in the quality of the ointment for a long period of time and hardly be squeezed and deformed even by external pressure, but it is easy to use just like the conventional first aid adhesive plasters with a simple composition.
To achieve the above object, a first aid adhesive plaster of the present invention comprises a pad on an upper surface of which an ointment is laid, an adhesive sheet of rectangular shape; said pad being applied in a central portion of an upper surface of the adhesive sheet, and an ointment protect cover formed to be a blister having a dome section by making its central portion project upwardly to form a gentle arc, wherein the pad is covered with the blister by applying the ointment protect cover onto the adhesive sheet separably while leaving a gap between the ointment on the pad and an undersurface of the blister.
The first aid adhesive plaster is characterized in that the blister is formed to be rectangular shape in plan view and provides both long side walls which are formed to be standing walls and inclined from their lower ends to approach each other upwardly.
In one embodiment the present invention relates to a first aid adhesive plaster which provides an ointment protect cover having another structure of a blister. Namely, the first aid adhesive plaster comprises a pad on an upper surface of which an ointment is laid, an adhesive sheet of rectangular; said pad being applied in a central portion of an upper surface of the adhesive sheet, and an ointment protect cover formed to be a blister having a rectangular form in plan view by making four walls thereof higher than the height of a width of the pad having the ointment, and also by making its central portion of the ointment protect cover project, wherein the pad is covered with the blister by applying the ointment protect cover onto the adhesive sheet separably.
In another embodiment of the present invention, the first aid adhesive plaster comprises a projection which is formed with a ceiling wall of the blister to project upwardly and to be made in parallel with a longitudinal direction of the blister.
In still another embodiment the present invention is characterized in that the undersurface of a ceiling wall of the blister provides a projection for preventing the blister from deforming downwardly by contacting the lower end of the projection with the pad.
In yet another embodiment the present invention further comprises a guard film applied onto the undersurface of the pad, said guard film being made to prevent permeation of the composition of the adhesive agent of the adhesive sheet, and a net covering from the upper surface of the pad to the undersurface of the guard film, both sides of said net being fixed to the both sides of the pad integrally by means of hot melt, wherein the ointment is applied from the upper surface of the net onto the pad through the mesh of the net so as to support the ointment by means of the mesh of the net.
In still a further embodiment of the invention the the pad comprises at least two layers. In still another embodiment the invention further comprises a separable paper interposed between both ends of the ointment protect cover in its longitudinal direction and both ends of the adhesive sheet in its longitudinal direction.
Functions and Advantages:
Since the ointment on the pad is covered with the blister of the ointment protect cover and the ointment protect cover is applied onto the adhesive layer of the adhesive sheet entirely, including the periphery of the opening lower end of the blister, the ointment applied onto the pad is sealed in the blister in such a state that the pad is isolated from the open air, and therefore there is no fear tha
Aso Seiyaku Kabushiki
Greigg Ronald E.
Lewis Kim M.
LandOfFree
First aid adhesive plaster does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with First aid adhesive plaster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First aid adhesive plaster will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3072827