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US4957795: Absorbent elastomeric wound dressing

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Filing Information

Inventor(s) John E. Riedel ·
Assignee(s) Minnesota Mining and Manufacturing Company ·
Attorney/Agent(s) Donald M. Sell ·
Primary Examiner James C. Cannon ·
Application Number US7469708
Filing date 01/24/1990
Issue date 09/18/1990
Predicted expiration date 05/13/2008
U.S. Classifications 428/74  · 428/76  ·
International Classifications A61F 1346  ·
Kind CodeA
International Classifications 428286;287;360;362;369;372;74;76;77;283;298;311.5;317.1;317.9 ·
Related U.S. Application DataThis is a continuation of application Ser. No. 07/194,082 filed May 13, 1988, and now abandoned.
27 Claims, No Drawings


Abstract

An elastomeric nonwoven absorbent web is provided. The web comprises a nonwoven fibrous matrix of elastomeric melt-blown small diameter fibers and absorbent staple fibers or absorbent particulate material, wicking staple fibers, and bulking staple fibers dispersed throughout the matrix. This web is particularly useful in an absorbent elastomeric wound dressing. The wound dressing has a fluid permeable, compliant, low adherency wound contacting layer, an intermediate conformable, fluid-absorbent element, i.e., the elastomeric nonwoven absorbent web, and a soft, compliant cover layer.

Independent Claims | See all claims (27)

  1. 1. An elastomeric nonwoven absorbent web comprising a nonwoven fibrous matrix of about 10 to 20 weight percent elastomeric melt-blown small diameter fibers and about 10 to 30 weight percent absorbent staple fibers or about 5 to 20 weight percent absorbent polymeric particulate material, about 30 to 60 weight percent wicking staple fibers, and about 10 to 30 weight percent crimped bulking staple fibers dispersed throughout the matrix.
  2. 17. An absorbent elastomeric wound dressing comprising (1) a fluid permeable, compliant, low adherency wound contacting layer, (2) an intermediate conformable, fluid-absorbent element, the element having a nonwoven fibrous matrix of about 10 to .degree.weight percent elastomeric melt-blown small diameter fibers and about 10 to 30 weight percent absorbent staple fibers or about 5 to 20 weight percent absorbent polymeric particulate material, about 30 to 60 weight percent wicking staple fibers, and about 10 to 30 weight percent crimped bulking staple fibers dispersed throughout the matrix, and (3) a soft, compliant cover layer.
  3. 26. An elastomeric nonwoven absorbent web comprising a nonwoven fibrous matrix of about 10 to 20 weight percent polyurethane melt-blown small diameter fibers and about 10 to 30 weight percent absorbent staple fibers or about 5 to 20 weight percent absorbent polymeric particulate material, about 30 to 60 weight percent wicking staple fibers, and about 10 to 30 weight percent crimped bulking staple fibers dispersed throughout the matrix.
  4. 27.27. An elastomeric nonwoven absorbent web comprising a nonwoven fibrous matrix of about 10 to 20 weight percent polyurethane melt-blown small diameter fibers and about 10 to 30 weight percent absorbent staple fibers or about 5 to 20 weight percent absorbent polymeric particulate material, about 30 to 60 weight percent wicking staple fibers, and about 10 to 30 weight percent crimped bulking staple fibers dispersed throughout the matrix, said web having a softness of less than about 80 g, a wicking value of at least about 0.5 cm/30 sec, and absorbency of at least about 1000 percent and at least 11.5 g per g basis weight, and a retention of absorbed liquid of at least about 50 percent.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3670731 JOHNSON & JOHNSON Harmon Jun 1972
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US4118531 Minnesota Mining and Manufacturing Company Hauser Oct 1978
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Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
EP212284Mar 1987
EP0156649MINNESOTA MINING AND MANUFACTURING COMPANYApr 1987
GB1575830JOHNSON & JOHNSONMay 1977
GB2151272KIMBERLY CLARK LTDJul 1985
GB2151272AJul 1985

Other Publications

Wente, Van A. -- Superfine Thermoplastic Fibers Ind. Eng. Chem. vol. 48, pp. 1342 et seq. (1956).
J. W. S. Hearle, Physical Properties of Textile Fibers, Butterworth, London 1975, pp. 399-403.
Morton, W. E., Physical Properties of Textile Fibers, 2nd edition, John Wiley and Sons, New York (1975), pp. 399-401.

Referenced By

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US7612248 3M Innovative Properties Company Scott A. Burton et al. Nov 2009
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