Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1993-07-20
1995-01-10
Hirsch, Paul J.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604177, A01M 2502
Patent
active
053802942
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a vein catheter dressing of the kind described in Patent Specification No. SE-B-414 994 and which includes a supporting foil having on one side thereof an adhesive layer which is covered with a protective, peelable release layer. Located between the adhesive layer and the release layer is a liquid-absorbent suction pad, over which there is suitably placed a non-absorbent liquid-permeable foil. The liquid-absorbent suction pad, or suction layer, is preferably considerably smaller than half the supporting foil and is placed centrally on said foil, especially such that the whole of said suction pad or the major part of said suction pad will lie within one-half of the supporting foil. A slit is provided through the supporting foil, the adhesive layer and the release foil and extends from one edge of the dressing up to the vicinity of the suction pad, so as to form two elongated flaps. When the suction pad is large, and particularly when the suction pad extends towards that edge of the dressing from which the slit begins, the slit may pass through a part of the suction pad, although the imperforate part of the suction pad shall be so large as to effectively cover the place at which the catheter was inserted. The release layer is conveniently divided into two release foils having gripping flaps which meet each other adjacent to or over the suction pad.
The aforedescribed dressing is well known and is well used in medical care establishments. The dressing can be handled, changed and applied easily, without any of the various parts of the dressing sticking to one another, although this will readily occur with an excessively loose slippy dressing or bandage.
Other dressings of similar construction are known to the art, although these known dressings are comprised of transparent plastic material and lack a suction pad. While the aforedescribed vein catheter dressing will keep the wound clean and is satisfactorily firm, while being flexible at the same time, the transparent dressings are extremely slippy and difficult to handle. When the plastic material used is very thin, the dressings become very flimsy, whereas when the thickness of the plastic material is increased, the dressing will not be flexible enough but instead will become comparatively rigid, which renders the dressing unfriendly to the skin and prevents the dressing from accompanying movement of the skin. Furthermore, these known dressings are difficult to remove from the wound, and are easily torn in the process of being removed. The transparent dressings are impermeable to both air and moisture, whereas the vein catheter dressing provided with a suction pad has a supporting foil which is normally made of an air and moisture permeable material and can be made totally or partially impervious or air permeable with the aid of the adhesive layer.
However, blood and fluid may exude from the wound caused by insertion of the catheters. When using the transparent dressing, the fluid will then lie between dressing and skin. When the wound fluid is not absorbed, the fluid will spread so as to obstruct the view through the transparent dressing, while increasing the risk of infection.
The object of the present invention is to provide a vein catheter dressing which possesses the advantages afforded by the dressing which includes a suction pad and a readily-handled supporting foil, while enabling, at the same time, the location at which the catheter is inserted into the vein to be examined or observed visually, without needing to remove the dressing.
The present invention relates to a vein catheter dressing of the kind described in the introduction which, in accordance with the invention, is provided with a transparent window at a location adjacent the suction pad, such that when the dressing is applied the window will lie over the vein location where the catheter was inserted. Thus, merely by glancing at the window it can be seen whether the wound has become infectious or not, while at the same time the insertion is held protected by
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Hirsch Paul J.
Procter & Gamble Hygien Aktiebolag
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