Title:
Surgical dressing
United States Patent 2221758


Abstract:
This invention relates to surgical dressings of a particular nature, and has for its primary object, the provision of a shield for a part of the skin of the human body that is being subjected to the action of materials to determine the effect of such materials upon the body if used, for example,...



Inventors:
Francis, Elmquist
Application Number:
US14219237A
Publication Date:
11/19/1940
Filing Date:
05/12/1937
Assignee:
Francis, Elmquist
Primary Class:
International Classes:
A61B10/00; A61F13/00; A61F13/02
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Description:

This invention relates to surgical dressings of a particular nature, and has for its primary object, the provision of a shield for a part of the skin of the human body that is being subjected to the action of materials to determine the effect of such materials upon the body if used, for example, as a cosmetic. One of the important aims of this invention is to provide a shield of the aforementioned type, that is specially made so that the parts thereof are uniquely held in assembled relation without the employment of stitches, staples, brads or other objectionable elements that would have a detrimental effect upon the results obtained.

Another important aim of this invention is to provide a shield or surgical dressing of the adhesive type, having as a part thereof, a flexible body, one side of which is covered with an adhesive material, part of which serves to hold the shield in place, while other novelly formed elements are secured in operative position by an additional part of the adhesive.

A yet further, and very important, object of this invention is to provide a shield for use in testing the effect of cosmetics upon the human body, which has a specially formed and positioned member that serves to create a materialreceiving cavity and to segregate an area of the body being tested from the adhesive which is employed in holding the shield in operative position.

Structural details of the shield form minor objects of the invention, and the same will appear during the course of the following specification, referring to the accompanying drawing, wherein: Figure 1 is a perspective view of the surgical dressing in place on a human body, and made in accordance with the present invention.

Fig. 2 is an enlarged, top plan view of the same, a portion being broken away for clearness.

Fig. 3 is an extended, disassembled view of the surgical dressing, and, Fig. 4 is a cross sectional view, taken along line IV-IV of Fig. 2.

The shield comprises in the main, a body 6, sheet of transparent material 8, and flat annulus of fibrous material 10. These aforementioned parts are brought together through the employment of the adhesive which overlies the entire one side 12 of body 6. An opening 14 is formed through body 6, and sheet 8 is moved to position over opening 14, with its marginal edge against the adhesive on side 12.

In most instances it is desired to make opening 14 round, in the manner illustrated, and when body and opening are formed as shown, sheet 8 should likewise be disc-shaped, but smaller in outside diameter than the outside diameter of body 6. The diameter of sheet 8 is slightly larger than the diameter of opening 14, and the adhesive between body 6 and sheet 8 will secure the same together.

Sheet 8 may be provided with a plurality of notches 16 so as to increase the area of one side of member 10, which is brought against the adhesive on side 12 of body 6. When the flat annulus or member 10 is moved to place, a part of its marginal edge will extend beyond the edge of sheet 8 to be held by the adhesive. The use of radially disposed notches 16 will augment the action of the adhesive so as to create a firm and well assembled unit.

Member 10 is ring-shaped and an opening 18, formed in member 10, should be substantially of the same diameter as opening 14. When the shield is assembled, openings 14 and 18 should be in register with sheet 8, extending across the same. Member 10 should be of felt or some similar fibrous, pliable and yieldable substance which will definitely segregate an area of the body from that portion thereof contacted by the adhesive on face 12 of body 4.

Reference to Fig. 4 will indicate that the area designated by the numeral 20 is not contacted by the adhesive on body 6. Obviously, material within cavity 22, which is bounded by the inner annular edge of member 10 and covered by sheet 8, will act upon a small segregated surface of the skin, which will not be affected or acted upon by adhesive or any matter other than the material being tested. Member 10 may be impregnated with any suitable germicidal material or substance which would preclude the passage of bacteria or germs into cavity 22, and when body 6 is pressed into place, member 10 is in a location to effectively protect the material and set-off area of the skin.

Sheet 8 should be stiff enough to preclude inward bulging and a transparent nitro-cellulose material may be employed that has the property of bending to the contour of the body without breaking or losing its rigidity.

A surgical dressing or shield made as herein set down may assume a physical appearance different from that in the illustrated embodiment herewith, and therefore, it is desired to be limited only by the spirit of the invention and scope of the appended claim.

Having thus described the invention, what is A5 claimed as new and desired to be secured by Letters Patent is: A surgical dressing of the character described, for observing the action of materials on the skin, comprising a flat disc-shaped body having an opening formed therethrough; an adhesive coating on one side of said body; a flat sheet of transparent material, having a diameter greater than the diameter of the opening, closing the opening and having its marginal edge secured to the body by said adhesive; and a flat annulus of fibrous material, having an outside diameter greater than said sheet of transparent material and less than the outside diameter of the said body, disposed against the body and said sheet of transparent material to form a cavity to one side of the sheet of transparent material, said adhesive serving to hold the body, said sheet and the said annulus in assembled relation, said sheet of transparent material being provided with a plurality of notches extending inwardly from the edge thereof to expose to the adhesive a relatively greater portion of the area of said annulus.

FRANCIS ELMQUIST.