Dressings and bandages comprising same

a technology of wound dressings and bandages, applied in the field of bandages and wound dressings, can solve the problems of inconvenient and messy use of adhesive materials in the wound area of wound dressings, the inability to painlessly remove bandages without traumatizing the wound, and the inability to achieve painless removal of bandages

Inactive Publication Date: 2002-02-07
SCAMILLA ALEDO MARIA APARECIDA DE CARVALHO +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One problem with such absorbent bandages is that the fibers of the absorbent pad may become embedded in the healing wound, making it difficult to painlessly remove the bandage without traumatizing the wound.
While effective at promoting wound healing, a problem with such treatment regimens is that they are relatively inconvenient and messy.
While these support materials may have some absorptive capacity, the presence of the occlusive composition overlying the support material tends to block the support and prevent it from absorbing moisture-containing fluids such as wound exudate.
However, the use of an adhesive material in the wound area of a wound dressing would be expected to be undesirable because contact of the wound with an adhesive composition would be expected to re-traumatize the wound when the dressing is removed.
While the dressings disclosed in the '620 patent may possess ...

Method used

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  • Dressings and bandages comprising same
  • Dressings and bandages comprising same
  • Dressings and bandages comprising same

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0079] Preparation of a Continuous Roll of Dressing of the Invention by Discontinuous Coating of the Ointment Composition on an Absorbent Substrate

[0080] The equipment used to apply a discontinuous coating of the ointment composition to a web of the absorbent substrate in the preparation of the dressings and bandages of the invention is shown in FIG. 5. A 5 gallon pail of the ointment composition of Example 1 was placed in a Model 505 Bulk Melter Applicator (Nordson Corp., Boothwyn, Pa.) (not shown). The melter comprised a platen heater which heats the upper surface of the ointment composition contained in the pail. The platen was heated to a temperature of about 133.degree. F. to melt the composition contained in the uppermost portion of the pail. The ointment composition was pumped via a gear pump (not shown) located in the Melter-Applicator via line 86 to slot die 88. The die 88 was maintained at a temperature of about 128.degree. F. during the coating operation. A 7 / 8"-wide web ...

example 3

[0081] One Embodiment of a Bandage of the Invention

[0082] An adhesive bandage is made using the dressing described in Example 2. This adhesive bandage is illustrated in FIG. 6 of the drawings. Adhesive bandage 100 comprises a backing material 105 having apertures 106 therein; an absorbent substrate 110; a discontinuous coating of an ointment-like composition 115; and a porous covering material 120. The upper surface 105a of the backing material is coated with a layer of a pressure-sensitive acrylic adhesive 107. It will be understood that any of the adhesives well known in the art for use with adhesive bandages may be used in place of this adhesive. The adhesive may, if desired, be deposited on the backing layer in a continuous or discontinuous pattern rather than as an overall coating as illustrated in the drawing.

[0083] As is further illustrated in the drawings, substrate material 110 is preferably provided in the form of a fibrous pad which is centered from end-to-end of the back...

example 4

[0092] Another Embodiment of the Bandage of the Invention

[0093] Referring now to FIG. 9, there is illustrated in longitudinal section another embodiment of an adhesive bandage 200 of the invention in which porous covering material 120 has been given an alternative configuration. As was the case with adhesive bandage 100 illustrated in FIG. 6, adhesive bandage 200 comprises backing 105; adhesive layer 107; absorbent substrate material 110; ointment-like composition 115; and porous covering material 120. In bandage 100 disclosed in FIG. 6, porous covering material 120 was coextensive in its length and width with fibrous substrate material 110. In the alternative embodiment illustrated in FIG. 9, porous covering material 120 comprises downwardly extending portions 122a, 122b and longitudinally extending tab portions 123a, 123b. Downwardly extending portions 122a, 122b serve to cover the ends 112a, 112b, respectively, of fibrous substrate material 110 and the ends 117a, 117b, respective...

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Abstract

The dressings of the invention comprise at least two components: an absorbent substrate having a first skin-facing surface and a second opposing surface; and a discontinuous coating of a semi-solid composition having an ointment-like feel overlying a portion of the first surface of said absorbent substrate. The absorbent substrate is useful as a passive dispenser of at least one active ingredient that may be contained therein. The discontinuous coating is essentially non-adherent to the skin and is useful as an active dispenser of at least one active ingredient that may be contained therein. In preferred embodiments the dressing of the invention contains at least one and more preferably at least two active ingredients intended to provide therapeutic benefit to the skin.

Description

[0001] The present invention is directed to a dressing, particularly for wounds, which comprises an absorbent substrate and a discontinuous coating of a composition having an ointment-like feel. The dressing is useful for absorbing bodily exudates, particularly wound exudates, and for dispensing active ingredients, for example, therapeutics, to the skin with no substantial loss of absorption capacity. The dressings of the invention and bandages derived therefrom may be easily and comfortably removed from the skin when desired without re-traumatizing a wound site.BACKGROUND OF THE INVENTION AND PRIOR ART[0002] Bandages and wound dressings typically comprise an absorbent pad to absorb exudate from a wound. The absorbent pad is typically constructed of a fibrous nonwoven material. One problem with such absorbent bandages is that the fibers of the absorbent pad may become embedded in the healing wound, making it difficult to painlessly remove the bandage without traumatizing the wound. ...

Claims

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Application Information

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IPC IPC(8): A61L15/44A61F13/02A61K9/70B32B27/04
CPCB32B27/04A61K9/7053A61L2300/406A61L2300/222A61L2300/428A61F2013/0296A61K9/7084A61F13/0203A61L2300/606A61K9/703A61L15/44A61L2300/402A61L2300/404A61L2300/41Y10T442/2525B32B2305/026B32B2323/04B32B2535/00B32B27/32B32B2556/00B32B27/12
Inventor SCAMILLA ALEDO, MARIA APARECIDA DE CARVALHOMEIZANIS, JAMES J.DE OLIVEIRA, D'ARTAGNAN SILVARANGEL, FABIO EDUARDO FRANCA
Owner SCAMILLA ALEDO MARIA APARECIDA DE CARVALHO
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