US1434779A - Surgical patch - Google Patents

Description

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Patented Nov. 7, 15922.

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ALBERT F. HENDERSON, OF MDDLETON, MASSACHUSETTS.

SURGICAL PATCH.

Application led May 25, 1921. Serial No. 472,409.

To all 'whom t may concern.'

Beit known that-I, ALBERT F. HENDERSON, a citizen of the United States, residing at Middleton, in the county or' Essex and State of Massachusetts, have invented neW and useful Improvements in lSurgical Patches, of which the following is a specification.

This invention has for its object to provide a surgical patch of improved construction, adapted to be conveniently and securely applied to an area to be protected, and to present to a wounded or diseased portion of said area, a facing of absorbent compressible Ventilating material, such as absorbent cotton, to permit ventilation of the said portion.

The invention is embodied in the improvements which l will now proceed to describe and claim.

Of the accompanying drawings forming a part of this' specicatiom- Figure 1 is a plan view showing an elongated patch strip embodying the invention,

'adapted to be cut into a plurality of operative patches, and provided with a detachable and discarda'ble covering layer.

Figure 2 is an enlarged section on line 2-'2 of Figure 1.

Figure 3 is an enlarged plan View of a patch cut from the strip shown by Figure 1, the covering layer being removed.

Figure 4f is a section on line 4 4 of Figure 3.

Fi ure 5 is a view similar to Figure fi,

showing -the patch applied 'to an area to be protected.

Figure 6 is a view similar to Fi ure 3, showing a single patch provided wit a detachable and discardable covering layer.

Figure 7 is a plan view of an elongated patch strip, and illustrating a ditlerent arrangement ol the absorbent material.

The same reference `characters indicate the same parts in all of the figures.

`12 represents a conning layer of any suitable flexible sheet material, such as cotton cloth, having on its inner side an adliesive coating 13, indicated by the heavy black line in Fi ures 2, 4f, and 5 and by the transversely sha ed portions in the other ligures.

The said coating is of a non-drying nature, so `that it remains for a protracted period in a viscous or sticky condition, a suitable material for thev coating being Z. O.

a backing portion.

-tected area.

plaster, an adhesive, composition containing zinc oxide.

The layer 12 includes a central portion provlded with apertures 14, and imperiorate portions projecting in opposite directions from the apertured central portion. 16 represents an absorbent layer of compressible material, which is pervious to air.v such as the well known absorbent cotton. sorbent layer is of smaller area than the conimng layer, and is united by the coating 13 to the apertured central portion of the conlining layer. Said central portion, therefore, backs the absorbent layer, and is called-A The imperforate )ortions oi' the confining layer project rom opposite edges of the absorbent layer and constitute flaps having adhesive inner surfaces, which are exposed, so that they may be caused to adhere to human skin. As shown by Figure 5, the patch may be secured by the exposed portions of the coating 13 to an area 17, to be protected by the patch,a Wound or an infected spot in said 'area being protected and ventilated by the absorbent layer 16, and by the apertures in the central portion of the confining layer.

The inner side of the patch is formed partly by the absorbent layer 16, and partly by the inner sides of the projecting portions or flaps of the confining layer 12, so that the inner side of the patch has a central absorbent Ventilating section adapted to contact directly with'an area to be protected, and adhesive flaps or sections at opposite edges of the absorbent section adapted to adhere to skin surfaces at opposite sides of the `ro- The outer side of the patc 1 is formed entirely by the confining layer 12, the apertures 14 of which expose portions ,of the absorbent` material to the air, so that the protected area is continuously ventilated.

When the patch is prepared for the market and keptfin stock, it is preferably provided with a covering layer 18, of thin muslin, detachably secured to the patch by the exposed portions of the coating 13. When the patch is to be used, the covering layer is pulled off and discarded.

ll prefer in'practicing my invention, to manufacture an elongated surgical patch strip, as shown by Figure 1, said strip being adapted to be transversely cut as aty the dotted line a--m (Figure 1) .f to form a plurality of independent patches. In said patch strip Said abthe several la ers are elon ated, and the perforations int e confining ayer are arranged to form a perforated longitudinal zone.

The strip including the elongated covering layer 18 may be rolled, folded, or other wise prepared for the market.

. strip, I app In the embodiment of the invention shown by Figures l, 3 and 6the compressible absorbent layer extends continuously Vbetween two opposite edges ot the patch, so that the y of its edge portions.

In makin up a divisible elongated'patch tions 16` t e elongate a pluraliy of absorbent secconfining layer 12,

the orifices 14 being arranged in groups, each group communicating with a Jfacing section.

I claim:

A surgical patch composed of an outer layer of flexible sheet-like material provided with a series of perforations, and a layer of absorbent material, of less 'area than the outer layer, arranged across the inner face ot the perforated section of the outer layer and forming a portion of the inner side of the patch, portions of the inner surface of the outer layer beyond the margin of the abl sorbent layer being coated with an adhesive whereby the patch may be secured in operative position with the entire inner surface of the absorbent layer in Contact with an area to be protected, the absorbent layer being -pervious to air and the perforations in the.

outer layer exposing ent layer to the air.

In testimony whereof I have afiixed my signature.

portions of said absorb- ALBERT F. HENDERSON.

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