U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Liquid loaded pad for medical applications

Patent 4588400 Issued on May 13, 1986. Estimated Expiration Date: Icon_subject May 13, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3419006

3814095

Process for cocrosslinking water soluble polymers and products thereof
Patent #: 3993551
Issued on: 11/23/1976
Inventor: Assarsson ,   et al.

High fluid-holding alloy rayon fiber mass
Patent #: 4289824
Issued on: 09/15/1981
Inventor: Smith

Sterile improved bandage containing a medicament
Patent #: 4307717
Issued on: 12/29/1981
Inventor: Hymes ,   et al.

Drug delivery devices comprising erodible polymer and erosion rate modifier
Patent #: 4346709
Issued on: 08/31/1982
Inventor: Schmitt

Composite wound dressing
Patent #: 4373519
Issued on: 02/15/1983
Inventor: Errede ,   et al.

Production of a cellulose-synthetic polymer composite fiber
Patent #: 4378431
Issued on: 03/29/1983
Inventor: Brown, Jr.

Absorbent products Patent #: 4423101
Issued on: 12/27/1983
Inventor: Willstead

Inventors

Application

No. 06/450324 filed on 12/16/1982

US Classes:

604/304, Bandage, pad, or shield placed on body for sustained treatment thereof424/447, Bandages with incorporated medicaments424/449, Transdermal or percutaneous514/781, Cellulose or derivative602/48, Wound contact layer containing treatment material602/49, Polysaccharide604/289Treating material applied to or removed from external surface of body, or cutaneous layer of skin (e.g., eye treatment, removal of skin impurities, etc.)

Examiners

Primary: Rosenbaum, C. Fred
Assistant: Kaechele, Karen L.

Attorney, Agent or Firm

International Classes

A61L 15/40 (20060101)
A61L 15/28 (20060101)
A61L 15/16 (20060101)

Abstract

Liquid loaded pads useful as wound and burn dressings are prepared from pellicles of microbially-produced cellulose obtained, for example, by culturing Acetobacter xylinum. A pellicle having a thickness from about 0.1 to 15 millimeters or greater is processed to replace the culture medium with water or other physiologically compatible liquid. The liquid-loaded pellicle is sterilized prior to its use as a dressing or in other medical applications.

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