Patents by Inventor Wayne R. Sturtevant

Wayne R. Sturtevant has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5899871
    Abstract: A sterile wound packing material and package therefor is provided, which wound packing is flexible and conformable to deep and/or irregular shaped wounds, is compact and easily dispensed, and which can be stored indefinitely. The wound packing may also be used for absorbing wound exudate and immediately discarded or may be designed to remain in place for extended periods during healing. The wound packing includes a sterile, wound packing of a flexible material capable of absorbing wound exudate, with the flexible material being in the form of a substantially flat, coiled, spirally-cut layer and a package therefor. In certain embodiments of the invention where it is desired that the wound packing remain in place for an extended period, the flexible material is impregnated with a hydrogel, which may be a "wet" hydrogel (i.e., one containing substantial amounts of water) or a dehydrated hydrogel which is substantially devoid of water but becomes hydrated in use.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: May 4, 1999
    Assignee: NDM, Inc.
    Inventors: James Vernon Cartmell, Wayne R. Sturtevant, Michael Lee Wolf
  • Patent number: 5762620
    Abstract: The present invention provides a wound dressing in the form of a gauze or similar absorbent material having a partially or substantially dehydrated hydrogel material impregnated therein for absorbing wound exudate. The wound dressing is capable of absorbing large amounts of wound exudate without inhibiting the healing of the wound to which it is contacted and without the need for additional backing or adhesive layers. The wound dressing also has a pliable, soft structure which permits the dressing to be applied to wounds having irregular shapes and depths.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: June 9, 1998
    Assignee: NDM Acquisition Corp.
    Inventors: James Vernon Cartmell, Wayne R. Sturtevant, Michael Lee Wolf
  • Patent number: 5695456
    Abstract: A sterile wound packing material and package therefor is provided, which wound packing is flexible and conformable to deep and/or irregular shaped wounds, is compact and easily dispensed, and which can be stored indefinitely. The wound packing may also be used for absorbing wound exudate and immediately discarded or may be designed to remain in place for extended periods during healing. The wound packing includes a sterile, wound packing of a flexible material capable of absorbing wound exudate, with the flexible material being in the form of a substantially flat, coiled, spirally-cut layer and a package therefor. In certain embodiments of the invention where it is desired that the wound packing remain in place for an extended period, the flexible material is impregnated with a hydrogel, which may be a "wet" hydrogel (i.e., one containing substantial amounts of water) or a dehydrated hydrogel which is substantially devoid of water but becomes hydrated in use.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: December 9, 1997
    Assignee: NDM, Inc.
    Inventors: James Vernon Cartmell, Wayne R. Sturtevant, Michael Lee Wolf
  • Patent number: 5674523
    Abstract: An elongated, self-adhesive wound dressing is provided which includes a hydrogel layer secured to a vapor permeable bacterial barrier layer. The vapor permeable barrier layer possesses sufficient porosity such that it readily adheres to the hydrogel layer without the need for an adhesive layer. The wound dressing is adapted to be wrapped around a portion of a patient's body and secured without the use of an adhesive.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: October 7, 1997
    Assignee: New Dimensions in Medicine, Inc.
    Inventors: James Vernon Cartmell, Wayne R. Sturtevant, Michael Lee Wolf
  • Patent number: 5531999
    Abstract: The present invention provides a hydrogel wound dressing substantially in the form of a rope and also in the form of a strand. The wound dressing comprises a hydrogel material substantially in a rope configuration or a strand configuration having a predetermined length for filling the cavity of a wound, and a dressing removal layer disposed within the strand configuration. The dressing removal layer may extend outwardly from an end so as to form a pull tab which facilitates removal of the rope configuration from the wound. The present invention also provides a wound dressing comprising a hydrogel material substantially in a strand configuration having a predetermined length for filling the cavity of a wound. The strand configuration also includes a dressing removal layer disposed within the strand configuration and may also include a pull tab which facilitates removal of the strand configuration from the wound.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: July 2, 1996
    Assignee: NDM, Inc.
    Inventors: James V. Cartmell, Wayne R. Sturtevant, Michael L. Wolf, Michael J. Allaire
  • Patent number: 5501661
    Abstract: A flexible wound dressing product contains a clear hydrogel material in a gel-like phase. The wound dressing product is comprised of several layers including a wound dressing, optional removable tab and optional release liner. The wound dressing comprises a thin-film layer, an adhesive layer, porous backing layer, optional support layer and a hydrogel material. The thin-film layer has a center portion and a perimeter portion. The backing layer, support layer and hydrogel material, which together form a reinforced hydrogel patch, are positioned in the center portion of the thin-film layer. The porous backing layer is formed of a porous material having sufficient porosity that the backing layer can be secured to the hydrogel material without the use of an adhesive. During manufacture, the hydrogel patch is assembled in sheet form and subsequently cut to a desired size and shape.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: March 26, 1996
    Assignee: New Dimensions in Medicine, Inc.
    Inventors: James V. Cartmell, Wayne R. Sturtevant, William E. Bausmith, III, Michael L. Wolf
  • Patent number: 5489262
    Abstract: A flexible, transparent wound dressing product contains a clear hydrogel material in a gel-like phase. The wound dressing product is comprised of several layers including a wound dressing, removable tab and release liner. The removable tab provides a grippable surface to allow for the removal of the release liner from the wound dressing and to facilitate handling of the wound dressing during application to the wound site. The tab may be comprised of a flat, double-coated paper or other suitable material, or a flexible, V-shaped member, and is removable by peeling after the wound dressing is applied. The wound dressing comprises a transparent thin-film layer, a first adhesive layer, backing layer, second adhesive layer, support layer and a hydrogel material. The transparent layer has a center portion and a perimeter portion. The backing layer, support layer and hydrogel material, which together form a reinforced hydrogel patch, are positioned in the center portion of the transparent layer.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: February 6, 1996
    Assignee: New Dimensions in Medicine, Inc.
    Inventors: James V. Cartmell, Wayne R. Sturtevant, William E. Bausmith, III, Michael L. Wolf
  • Patent number: 5480377
    Abstract: A wound dressing product is provided which includes a wound dressing laminate having a plurality of layers including a backing layer which forms a first side of the wound dressing laminate and a hydrogel layer which forms a second side of the wound dressing laminate. The wound dressing laminate is spirally wrapped about a center axis such that the wound dressing laminate terminates at a leading end and the first side of the wound dressing laminate forms the outer surface of the wound dressing product.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: January 2, 1996
    Assignee: New Dimensions in Medicine, Inc.
    Inventors: James V. Cartmell, Wayne R. Sturtevant, Michael L. Wolf, Michael J. Allaire
  • Patent number: 5478308
    Abstract: A sterile wound packing material and package therefor is provided, which wound packing is flexible and conformable to deep and/or irregular shaped wounds, is compact and easily dispensed, and which can be stored indefinitely. The wound packing may also be used for absorbing wound exudate and immediately discarded or by be designed to remain in place for extended periods during healing. The wound packing includes a sterile, wound packing of a flexible material capable of absorbing wound exudate, with the flexible material being in the form of a substantially flat, coiled, spirally-cut layer and a package therefor. In certain embodiments of the invention where it is desired that the wound packing remain in place for an extended period, the flexible material is impregnated with a hydrogel, which may be a "wet" hydrogel (i.e., one containing substantial amounts of water) or a dehydrated hydrogel which is substantially devoid of water but becomes hydrated in use.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: December 26, 1995
    Assignee: New Dimensions in Medicine, Inc.
    Inventors: James V. Cartmell, Wayne R. Sturtevant, Michael L. Wolf
  • Patent number: 5476443
    Abstract: A flexible wound dressing product contains a clear hydrogel material in a gel-like phase. The wound dressing product is comprised of several layers including a wound dressing, optional removable tab and optional release liner. The wound dressing comprises a thin-film layer, an adhesive layer, porous backing layer, optional support layer and a hydrogel material. The thin-film layer has a center portion and a perimeter portion. The backing layer, support layer and hydrogel material, which together form a reinforced hydrogel patch, are positioned in the center portion of the thin-film layer. The porous backing layer is formed of a porous material having sufficient porosity that the backing layer can be secured to the hydrogel material without the use of an adhesive. During manufacture, the hydrogel patch is assembled in sheet form and subsequently cut to a desired size and shape.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: December 19, 1995
    Assignee: New Dimensions in Medicine, Inc.
    Inventors: James V. Cartmell, Wayne R. Sturtevant, William E. Bausmith, III, Michael L. Wolf
  • Patent number: 5447492
    Abstract: A flexible external fixation dressing product contains a clear hydrogel material in a gel-like phase. The fixation dressing product is comprised of several layers including a thin-film top layer, optional backing layer, optional support layer, hydrogel layer, and optional release liner, and is adapted for use around the retaining pins of an external fixation device. The thin-film top layer may define a center portion and a perimeter portion. The backing layer, support layer and hydrogel material are positioned in the center portion of the thin-film top layer. The porous backing layer is formed of a porous material having sufficient porosity that the backing layer can be secured to the hydrogel material without the use of an adhesive. During manufacture, the dressing product is assembled and a substantially centered opening and a slit are cut. The opening and slit extend through all layers of the dressing and may also extend through the release liner, if included.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: September 5, 1995
    Assignee: New Dimensions in Medicine, Inc.
    Inventors: James V. Cartmell, Michael L. Wolf, Wayne R. Sturtevant
  • Patent number: 5429589
    Abstract: The present invention provides a wound dressing in the form of a gauze or similar absorbent material having dehydrated hydrogel material impregnated therein for absorbing wound exudate. The dehydrated hydrogel material is formed from an aqueous mixture comprising: (a) from about 0% to about 90% by weight polyhydric alcohol; (b) from about 6% to about 60% by weight aliphatic diisocyanate terminated prepolymer; (c) from about 4% to about 40% by weight polyethylene oxide based polyamine; (d) 0% to about 2% by weight sodium chloride; and (e) the balance water. The present wound dressing is capable of absorbing large amounts of wound exudate without inhibiting the healing of the wound to which it is contacted since it does not adhere to such a wound.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: July 4, 1995
    Assignee: New Dimensions in Medicine, Inc.
    Inventors: James V. Cartmell, Wayne R. Sturtevant, Michael L. Wolf
  • Patent number: 5423736
    Abstract: The present invention provides a wound dressing in the form of a gauze or similar absorbent material having dehydrated hydrogel material impregnated therein for absorbing wound exudate. The dehydrated hydrogel material is formed from an aqueous mixture comprising: (a) from about 0% to about 90% by weight polyhydric alcohol; (b) from about 6% to about 60% by weight aliphatic diisocyanate terminated prepolymer; (c) from about 4% to about 40% by weight polyethylene oxide based polyamine; (d) 0% to about 2% by weight sodium chloride; and (e) the balance water. The present wound dressing is capable of absorbing large amounts of wound exudate without inhibiting the healing of the wound to which it is contacted since it does not adhere or stick to the wound.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: June 13, 1995
    Assignee: New Dimensions in Medicine, Inc.
    Inventors: James V. Cartmell, Wayne R. Sturtevant, Michael L. Wolf
  • Patent number: 5423737
    Abstract: A flexible, transparent wound dressing product contains a clear hydrogel material in a gel-like phase. The wound dressing product is comprised of several layers including a wound dressing, removable tab and release liner. The removable tab provides a grippable surface to allow for the removal of the release liner from the wound dressing and to facilitate handling of the wound dressing during application to the wound site. The tab may be comprised of a flat, double-coated paper or other suitable material, or a flexible, V-shaped member, and is removable by peeling after the wound dressing is applied. The wound dressing comprises a transparent thin-film layer, a first adhesive layer, backing layer, second adhesive layer, support layer and a hydrogel material. The transparent layer has a center portion and a perimeter portion. The backing layer, support layer and hydrogel material, which together form a reinforced hydrogel patch, are positioned in the center portion of the transparent layer.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: June 13, 1995
    Assignee: New Dimensions in Medicine, Inc.
    Inventors: James V. Cartmell, Wayne R. Sturtevant, William E. Bausmith, III, Michael L. Wolf
  • Patent number: 5204110
    Abstract: A flexible burn dressing product contains a high absorbency hydrogel material in a gel phase. The hydrogel material is formed from a hydrogel composition for use in a wound dressings. The hydrogel composition is formed from a mixture comprising: (a) from about 0% to about 90% by weight polyhydric alcohol selected from the group consisting of polypropylene glycol, polyethylene glycol and glycerine; (b) from about 6% to about 60% by weight aliphatic diisocyanate terminated prepolymer based on polyols containing more than about 40% polyethylene oxide and having an isocyanate content of about 3% by weight; (c) from about 4% to about 40% by weight polyethylene oxide based polyamine; (d) up to about 2% by weight sodium chloride; and (e) the balance water. Such a hydrogel material provides a highly absorbent material capable of retaining large amounts of wound exudate, thereby rendering it very suitable for use in wound dressings.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: April 20, 1993
    Assignee: NDM Acquisition Corp.
    Inventors: James V. Cartmell, Wayne R. Sturtevant, Michael L. Wolf, Michael J. Allaire
  • Patent number: 5160328
    Abstract: A self-adhesive bandage is provided. The bandage comprises a substrate having a first side and a second side and a plurality of layers including a backing layer which forms the first side of the substrate, and an adhesive layer which forms the second side of the substrate. A hydrogel layer is disposed over the second side of the substrate and is made from a polyurethane hydrogel material especially suitable for absorbing bodily fluids, such as wound exudate. Additionally, a plurality of support layers may be interposed between the substrate and the hydrogel layer to provide the bandage with additional support.
    Type: Grant
    Filed: August 7, 1991
    Date of Patent: November 3, 1992
    Assignee: NDM Acquisition Corp.
    Inventors: James V. Cartmell, Wayne R. Sturtevant
  • Patent number: 5115801
    Abstract: A flexible burn dressing product contains a hydrogel material in a gel-like phase. The burn dressing product is comprised of several layers including a burn dressing and a release layer. The burn dressing is comprised of a bacterial barrier layer coated with a bonding layer, a reticulated layer impregnated with a hydrogel material, and a hydrogel material layer. A dimensionally stable backing member may also be adhesively attached to the bacterial barrier layer to help the burn dressing maintain its shape until it is applied to a patient. When the burn dressing product is to be applied to a burn site, the release layer is removed to expose the hydrogel material layer. The remaining layers of the burn dressing product are then applied to the burn site, with the hydrogel material layer directly contacting the burn. Once these layers are in place, the dimensionally stable backing member is removed.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: May 26, 1992
    Assignee: NDM Acquisition Corp.
    Inventors: James V. Cartmell, Michael L. Wolf, Michael J. Allaire, Wayne R. Sturtevant
  • Patent number: 5112618
    Abstract: A wound dressing product is described which includes a flexible backing member that can be vacuum formed to include a depression. A pressure-sensitive adhesive layer extends across the depression side of the flexible backing member. A hydrogel material is positioned in the depression of the flexible backing member and a release liner extends over the exposed pressure-sensitive adhesive layer and the exposed hydrogel material, which release liner has a selective releasability whereby it can be removed from the wound dressing product intact, leaving a portion of the pressure-sensitive adhesive and the hydrogel material exposed.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: May 12, 1992
    Assignee: NDM Acquisition Corp.
    Inventors: James V. Cartmell, Wayne R. Sturtevant, Manuel Valadez, Michael L. Wolf
  • Patent number: 5106629
    Abstract: A flexible, transparent wound dressing product contains a clear hydrogel material in a gel-like phase. The wound dressing product is comprised of several layers including a wound dressing, a release layer, and a dimensionally stable backing member. The wound dressing is comprised of a thin-film transparent layer having an adhesive perimeter portion and a center portion, and a hydrogel material positioned in the center portion of the transparent layer. Since the wound dressing is transparent, a grid pattern may be printed on the thin-film transparent layer to permit measurement of a wound. During manufacture, a vacuum pressure is applied to allow temporary access to the center portion of the thin-film transparent layer, creating a cavity for insertion of the hydrogel material. The dimensionally stable backing member is then adhesively attached around the perimeter portion of the thin-film transparent layer to help the wound dressing maintain its shape.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: April 21, 1992
    Assignee: NDM Acquisition Corp.
    Inventors: James V. Cartmell, Wayne R. Sturtevant
  • Patent number: 5059424
    Abstract: A wound dressing product is described which includes a flexible backing member that can be vacuum formed to include a depression. A pressure-sensitive adhesive layer extends across the depression side of the flexible backing member. A hydrogel material is positioned in the depression of the flexible backing member and a release liner extends over the exposed pressure-sensitive adhesive layer and the exposed hydrogel material, which release liner has a selective releasability whereby it can be removed from the wound dressing product intact, leaving a portion of the pressure-sensitive adhesive and the hydrogel material exposed.
    Type: Grant
    Filed: November 1, 1989
    Date of Patent: October 22, 1991
    Assignee: NDM Acquisition Corp.
    Inventors: James V. Cartmell, Wayne R. Sturtevant, Manuel Valadez, Michael L. Wolf