Patents by Inventor David Tumey

David Tumey 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).

  • Publication number: 20180200411
    Abstract: For making a matrix useable in a wound, matrix construction methods are provided, in which a slurry is formulated and then lyophilized. Usage of collagen and chondroitin sulfate (C6S) in the slurry is favored.
    Type: Application
    Filed: February 28, 2018
    Publication date: July 19, 2018
    Inventors: Jess Bills, Derek Cox, David Tumey
  • Publication number: 20170368230
    Abstract: For making a matrix useable in a wound, matrix construction methods are provided, in which a slurry is formulated and then lyophilized. Usage of collagen and chondroitin sulfate (C6S) in the slurry is favored.
    Type: Application
    Filed: June 23, 2017
    Publication date: December 28, 2017
    Inventors: Jess Bills, Derek Cox, David Tumey
  • Publication number: 20170368231
    Abstract: A skin-substitute is constructed by homogenizing an acellular dermal tissue matrix into a slurry, pouring the slurry into a mold, and lyophilizing the slurry.
    Type: Application
    Filed: June 23, 2017
    Publication date: December 28, 2017
    Inventors: Jess Bills, Derek Cox, David Tumey
  • Publication number: 20170274562
    Abstract: Based on dimensions and configurations of a dermal wound on a patient, a carrier is custom-made, preferably by 3D printing, to include a cavity that is duplicative of the specific wound. When the custom-made carrier is used to contain slurry, and the slurry-containing carrier undergoes processing steps (such as freeze-drying in a lyophilization chamber), a matrix is formed that, when removed from the carrier and put into the wound of the patient for whom the carrier was custom-made, fills the wound volume.
    Type: Application
    Filed: March 27, 2017
    Publication date: September 28, 2017
    Inventors: David Tumey, Derek Cox, Jessica Bills
  • Publication number: 20170136147
    Abstract: An apparatus and method for the production of substitute skin that advantageously reduces the amount of donor dermal cells needed from non-wound areas of a patient having a wound to be auto-grafted is reduced by using all of the harvested skin cells. A 3D printer is used to construct a wound graft product from the harvested skin cells without wasting any of the harvested skin cells. In a case of an irregularly shaped wound, wastage of harvested skin associated with trimming is avoided.
    Type: Application
    Filed: November 30, 2016
    Publication date: May 18, 2017
    Inventors: David Tumey, Sandra Berriman
  • Publication number: 20170136148
    Abstract: An apparatus and method for the production of substitute skin that advantageously reduces the amount of donor dermal cells needed from non-wound areas of a patient having a wound to be auto-grafted is reduced by using all of the harvested skin cells. A 3D printer is used to construct a wound graft product from the harvested skin cells without wasting any of the harvested skin cells. In a case of an irregularly shaped wound, wastage of harvested skin associated with trimming is avoided.
    Type: Application
    Filed: November 30, 2016
    Publication date: May 18, 2017
    Inventors: David Tumey, Sandra Berriman
  • Publication number: 20170072111
    Abstract: An apparatus and method for the production of substitute skin that advantageously reduces the amount of donor dermal cells needed from non-wound areas of a patient having a wound to be auto-grafted is reduced by using all of the harvested skin cells. A 3D printer is used to construct a wound graft product from the harvested skin cells without wasting any of the harvested skin cells. In a case of an irregularly shaped wound, wastage of harvested skin associated with trimming is avoided.
    Type: Application
    Filed: November 15, 2016
    Publication date: March 16, 2017
    Inventors: David Tumey, Sandra Berriman
  • Patent number: 9545302
    Abstract: An apparatus and method for the production of substitute skin that advantageously reduces the amount of donor dermal cells needed from non-wound areas of a patient having a wound to be auto-grafted is reduced by using all of the harvested skin cells. A 3D printer is used to construct a wound graft product from the harvested skin cells without wasting any of the harvested skin cells. In a case of an irregularly shaped wound, wastage of harvested skin associated with trimming is avoided.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: January 17, 2017
    Assignee: DermaGenesis LLC
    Inventors: David Tumey, Sandra Berriman
  • Publication number: 20160166731
    Abstract: A holey substrate now is used for constructing a graft product, such as building an autograft by 3D printing of living cells. When the autograft built atop the holey substrate is implanted, blood vessels and other patient tissues can grow through the holes.
    Type: Application
    Filed: February 23, 2016
    Publication date: June 16, 2016
    Inventors: David Tumey, Sandra Berriman
  • Publication number: 20160166732
    Abstract: A holey substrate now is used for constructing a graft product, such as building an autograft by 3D printing of living cells. When the autograft built atop the holey substrate is implanted, blood vessels and other patient tissues can grow through the holes.
    Type: Application
    Filed: February 23, 2016
    Publication date: June 16, 2016
    Inventors: David Tumey, Sandra Berriman
  • Publication number: 20160137979
    Abstract: A holey substrate now is used for constructing a graft product, such as building an auto-graft by 3D printing of living cells. When the autograft built atop the holey substrate is implanted, blood vessels and other patient tissues can grow through the holes.
    Type: Application
    Filed: January 20, 2016
    Publication date: May 19, 2016
    Inventors: David Tumey, Sandra Berriman
  • Publication number: 20150366655
    Abstract: An apparatus and method for the production of substitute skin that advantageously reduces the amount of donor dermal cells needed from non-wound areas of a patient having a wound to be auto-grafted is reduced by using all of the harvested skin cells. A 3D printer is used to construct a wound graft product from the harvested skin cells without wasting any of the harvested skin cells. In a case of an irregularly shaped wound, wastage of harvested skin associated with trimming is avoided.
    Type: Application
    Filed: July 17, 2015
    Publication date: December 24, 2015
    Inventors: David Tumey, Sandra Berriman
  • Publication number: 20150139960
    Abstract: An apparatus and method for the production of substitute skin that advantageously reduces the amount of donor dermal cells needed from non-wound areas of a patient having a wound to be auto-grafted is reduced by using all of the harvested skin cells. A 3D printer is used to construct a wound graft product from the harvested skin cells without wasting any of the harvested skin cells. In a case of an irregularly shaped wound, wastage of harvested skin associated with trimming is avoided.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 21, 2015
    Inventors: David Tumey, Sandra Berriman
  • Publication number: 20150140058
    Abstract: A holey substrate now is used for constructing a graft product, such as building an auto-graft by 3D printing of living cells. When the autograft built atop the holey substrate is implanted, blood vessels and other patient tissues can grow through the holes.
    Type: Application
    Filed: July 15, 2014
    Publication date: May 21, 2015
    Inventors: David Tumey, Sandra Berriman
  • Patent number: 8735644
    Abstract: A biocompatible wound dressing comprised of a pad for insertion substantially into a wound site and wound drape for sealing enclosure of the foam pad at the wound site. The pad, comprised of a foam or other like material having relatively few open cells in contact with the areas upon which cell growth is to be encouraged so as to avoid unwanted adhesions, but having sufficiently numerous open cells so that drainage and negative pressure therapy may continue unimpaired, is placed in fluid communication with a vacuum source for promotion of fluid drainage, as known in the art. The pad is further comprised of an ultra-low density fused-fibrous ceramic, or a bioabsorbable branched polymer, or cell growth enhancing matrix or scaffolding.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: May 27, 2014
    Assignee: KCI Licensing, Inc.
    Inventors: Royce Johnson, David Tumey
  • Publication number: 20120095421
    Abstract: A biocompatible wound dressing comprised of a pad for insertion substantially into a wound site and wound drape for sealing enclosure of the foam pad at the wound site. The pad, comprised of a foam or other like material having relatively few open cells in contact with the areas upon which cell growth is to be encouraged so as to avoid unwanted adhesions, but having sufficiently numerous open cells so that drainage and negative pressure therapy may continue unimpaired, is placed in fluid communication with a vacuum source for promotion of fluid drainage, as known in the art. The pad is further comprised of an ultra-low density fused-fibrous ceramic, or a bioabsorbable branched polymer, or cell growth enhancing matrix or scaffolding.
    Type: Application
    Filed: December 20, 2011
    Publication date: April 19, 2012
    Inventors: Royce Johnson, David Tumey
  • Patent number: 8084664
    Abstract: A biocompatible wound dressing comprised of a pad for insertion substantially into a wound site and wound drape for sealing enclosure of the foam pad at the wound site. The pad, comprised of a foam or other like material having relatively few open cells in contact with the areas upon which cell growth is to be encouraged so as to avoid unwanted adhesions, but having sufficiently numerous open cells so that drainage and negative pressure therapy may continue unimpaired, is placed in fluid communication with a vacuum source for promotion of fluid drainage, as known in the art. The pad is further comprised of an ultra-low density fused-fibrous ceramic, or a bioabsorbable branched polymer, or cell growth enhancing matrix or scaffolding.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: December 27, 2011
    Assignee: KCI Licensing, Inc.
    Inventors: Royce Johnson, David Tumey
  • Publication number: 20100268176
    Abstract: A biocompatible wound dressing comprised of a pad for insertion substantially into a wound site and wound drape for sealing enclosure of the foam pad at the wound site. The pad, comprised of a foam or other like material having relatively few open cells in contact with the areas upon which cell growth is to be encouraged so as to avoid unwanted adhesions, but having sufficiently numerous open cells so that drainage and negative pressure therapy may continue unimpaired, is placed in fluid communication with a vacuum source for promotion of fluid drainage, as known in the art. The pad is further comprised of an ultra-low density fused-fibrous ceramic, or a bioabsorbable branched polymer, or cell growth enhancing matrix or scaffolding.
    Type: Application
    Filed: June 30, 2010
    Publication date: October 21, 2010
    Inventors: Royce Johnson, David Tumey
  • Patent number: 7799004
    Abstract: A vacuum assisted wound closure device having a means for identifying infectious agents within a wound site. The vacuum assisted wound closure device includes a screen for placement within a wound site, a sealing means for covering the wound site, and a vacuum source in fluid communication with the screen. A canister may be disposed between the screen and vacuum source, such that fluids or other exudates that may be drawn from the wound during application of negative pressure by the vacuum source are collected in the canister for later disposal. A sensing device, which may be a gas chromatograph, sensor array, or other similar device capable of optically sensing the presence of a bacterial agent or other form of infection being drawn from the wound site, is disposed within the screen or interposed between the screen and the vacuum source.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: September 21, 2010
    Assignee: KCI Licensing, Inc.
    Inventor: David Tumey
  • Patent number: 7792334
    Abstract: Several systems and methods for locating blood vessels are described in the present disclosure. One of the implementations of a blood vessel locating system comprises an image capture device and processing circuitry. The image capture device is configured to capture a first image of a region of the skin of a subject when the region is illuminated by a first light and to capture a second image of the region of the skin when the region is illuminated by a second light. The processing circuitry is configured to calculate the difference between the first image and the second image to obtain a differential image. The processing circuitry is further configured to enhance the differential image to obtain an enhanced image of blood vessels located under the surface of the skin of the subject.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: September 7, 2010
    Assignee: Immersion Corporation
    Inventors: Robert F. Cohen, David Tumey, Scott McDermott