Patents by Inventor Duncan J. Maitland

Duncan J. Maitland 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: 20170181750
    Abstract: A system for occluding a physical anomaly. One embodiment comprises a shape memory material body wherein the shape memory material body fits within the physical anomaly occluding the physical anomaly. The shape memory material body has a primary shape for occluding the physical anomaly and a secondary shape for being positioned in the physical anomaly.
    Type: Application
    Filed: March 15, 2017
    Publication date: June 29, 2017
    Inventors: Thomas S. Wilson, Duncan J. Maitland
  • Patent number: 9670308
    Abstract: A device, system and method for treatment of an opening in vascular and/or septal walls including patent foramen ovale. The device has wings/stops on either end, an axis core covered in a shape memory foam and is deliverable via a catheter to the affected opening, finally expanding into a vascular or septal opening where it is held in place by the expandable shape memory stops or wings.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: June 6, 2017
    Assignees: Lawrence Livermore National Security, LLC, The Texas A&M University System
    Inventors: Pooja Singhal, Thomas S. Wilson, Elizabeth Cosgriff-Hernandez, Duncan J. Maitland
  • Patent number: 9662119
    Abstract: A system for treating an aneurysm in a blood vessel or vein, wherein the aneurysm has a dome, an interior, and a neck. The system includes a shape memory polymer foam in the interior of the aneurysm between the dome and the neck. The shape memory polymer foam has pores that include a first multiplicity of pores having a first pore size and a second multiplicity of pores having a second pore size. The second pore size is larger than said first pore size. The first multiplicity of pores are located in the neck of the aneurysm. The second multiplicity of pores are located in the dome of the aneurysm.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 30, 2017
    Assignees: Lawrence Livermore National Security, LLC, The Texas A&M University System
    Inventors: Jason M. Ortega, William J. Benett, Ward Small, Thomas S. Wilson, Duncan J Maitland, Jonathan Hartman
  • Patent number: 9597085
    Abstract: A system for occluding a physical anomaly. One embodiment comprises a shape memory material body wherein the shape memory material body fits within the physical anomaly occluding the physical anomaly. The shape memory material body has a primary shape for occluding the physical anomaly and a secondary shape for being positioned in the physical anomaly.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: March 21, 2017
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Thomas S. Wilson, Duncan J. Maitland
  • Publication number: 20170058875
    Abstract: A resistively heated shape memory polymer device is made by providing a rod, sheet or substrate that includes a resistive medium. The rod, sheet or substrate is coated with a first shape memory polymer providing a coated intermediate unit. The coated intermediate unit is in turn coated with a conductive material providing a second intermediate unit. The second coated intermediate unit is in turn coated with an outer shape memory polymer. The rod, sheet or substrate is exposed and an electrical lead is attached to the rod, sheet or substrate. The conductive material is exposed and an electrical lead is attached to the conductive material.
    Type: Application
    Filed: October 20, 2016
    Publication date: March 2, 2017
    Inventors: John E. Marion, III, Jane P. Bearinger, Thomas S. Wilson, Duncan J. Maitland
  • Publication number: 20170043512
    Abstract: Polymeric based closed cell foams, such as shape memory polymer foams, contain bubbles. Making these bubbles continuous is called reticulation. Disclosed are embodiments of a device and method to controllably reticulate polymer-based closed cell foams by puncturing the membranes of these polymer-based closed cell foams.
    Type: Application
    Filed: August 9, 2016
    Publication date: February 16, 2017
    Inventors: Jennifer N. Rodriguez, Duncan J. Maitland, Thomas S. Wilson
  • Publication number: 20170002130
    Abstract: Compositions and/or structures of degradable shape memory polymers (SMPs) ranging in form from neat/unfoamed to ultra low density materials of down to 0.005 g/cc density. These materials show controllable degradation rate, actuation temperature and breadth of transitions along with high modulus and excellent shape memory behavior. A method of making extremely low density foams (up to 0.005 g/cc) via use of combined chemical and physical blowing agents, where the physical blowing agents may be a single compound or mixtures of two or more compounds, and other related methods, including of using multiple co-blowing agents of successively higher boiling points in order to achieve a large range of densities for a fixed net chemical composition. Methods of optimization of the physical properties of the foams such as porosity, cell size and distribution, cell openness etc. of these materials, to further expand their uses and improve their performance.
    Type: Application
    Filed: September 19, 2016
    Publication date: January 5, 2017
    Inventors: Pooja Singhal, Thomas S. Wilson, Elizabeth Cosgriff-Hernandez, Duncan J. Maitland
  • Patent number: 9476412
    Abstract: A resistively heated shape memory polymer device is made by providing a rod, sheet or substrate that includes a resistive medium. The rod, sheet or substrate is coated with a first shape memory polymer providing a coated intermediate unit. The coated intermediate unit is in turn coated with a conductive material providing a second intermediate unit. The second coated intermediate unit is in turn coated with an outer shape memory polymer. The rod, sheet or substrate is exposed and an electrical lead is attached to the rod, sheet or substrate. The conductive material is exposed and an electrical lead is attached to the conductive material.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: October 25, 2016
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: John E. Marion, III, Jane P. Bearinger, Thomas S. Wilson, Duncan J. Maitland
  • Publication number: 20160270961
    Abstract: An embodiment includes a wound dressing comprising: a shape memory polymer (SMP) foam, including open cells, having first and second states; and a hydrogel (HG) included within the cells; wherein (a) in a first position a composite, including the SMP foam and the HG, is configured to be located proximate a hemorrhagic tissue with the SMP foam in the first state; (b) in a second position the composite is configured to be expanded to the second state against the hemorrhagic tissue when the SMP foam is plasticized at 37° C. depressing a glass transition temperature (Tg) of the SMP foam to below 25° C. Other embodiments are described herein.
    Type: Application
    Filed: March 18, 2015
    Publication date: September 22, 2016
    Inventors: Duncan J. Maitland, Todd Lawrence Landsman, Tyler Joseph Touchet, Elizabeth L. Cosgriff-Hernandez, Thomas S. Wilson
  • Publication number: 20160177929
    Abstract: A resistively heated shape memory polymer device is operated using resistive heating to heat the shape memory polymer device. The resistively heated shape memory polymer device is made by providing a wire that includes a resistive medium. The wire is coated with a first shape memory polymer. The wire is exposed and electrical leads are attached to the wire. In one embodiment the shape memory polymer device is in the form of a clot destruction device. In another embodiment the shape memory polymer device is in the form of a microvalve. In another embodiment the shape memory polymer device is in the form of a micropump. In yet another embodiment the shape memory polymer device is in the form of a thermostat or relay switch.
    Type: Application
    Filed: February 25, 2016
    Publication date: June 23, 2016
    Inventors: John E. Marion, III, Jane P. Bearinger, Thomas S. Wilson, Ward Small, IV, Duncan J. Maitland
  • Publication number: 20150313606
    Abstract: A stent for treating a physical anomaly. The stent includes a skeletal support structure for expanding in the physical anomaly and a shape memory material coupled to the skeletal support structure.
    Type: Application
    Filed: July 13, 2015
    Publication date: November 5, 2015
    Inventors: Thomas S. Wilson, Duncan J. Maitland, Ward Small, IV, Patrick R. Buckley, William J. Benett, Jonathan Hartman, David A. Saloner
  • Publication number: 20150257764
    Abstract: A system for occluding a physical anomaly. One embodiment comprises a shape memory material body wherein the shape memory material body fits within the physical anomaly occluding the physical anomaly. The shape memory material body has a primary shape for occluding the physical anomaly and a secondary shape for being positioned in the physical anomaly.
    Type: Application
    Filed: May 20, 2015
    Publication date: September 17, 2015
    Inventors: Thomas S. Wilson, Duncan J. Maitland
  • Patent number: 9078738
    Abstract: A stent for treating a physical anomaly. The stent includes a skeletal support structure for expanding in the physical anomaly and a shape memory material coupled to the skeletal support structure.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: July 14, 2015
    Assignees: Lawrence Livermore National Security, LLC, The Regents of the University of California
    Inventors: Thomas S. Wilson, Duncan J. Maitland, Ward Small, IV, Patrick R. Buckley, William J. Benett, Jonathan Hartman, David A. Saloner
  • Patent number: 9039733
    Abstract: A system for occluding a physical anomaly. One embodiment comprises a shape memory material body wherein the shape memory material body fits within the physical anomaly occluding the physical anomaly. The shape memory material body has a primary shape for occluding the physical anomaly and a secondary shape for being positioned in the physical anomaly.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: May 26, 2015
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Thomas S. Wilson, Duncan J. Maitland
  • Patent number: 8882786
    Abstract: Systems for closure of a physical anomaly. Closure is accomplished by a closure body with an exterior surface. The exterior surface contacts the opening of the anomaly and closes the anomaly. The closure body has a primary shape for closing the anomaly and a secondary shape for being positioned in the physical anomaly. The closure body preferably comprises a shape memory polymer.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: November 11, 2014
    Assignee: Lawrence Livermore National Security, LLC.
    Inventors: Jane P. Bearinger, Duncan J. Maitland, Daniel L. Schumann, Thomas S. Wilson
  • Publication number: 20140296358
    Abstract: Implant devices and structures that reduce inflammation and promote healing of the area of implant. Specifically, the use of shape memory open cell biocompatible polymer foams for implants that assist in and promote healing and especially in filling and sealing aneurisms.
    Type: Application
    Filed: June 18, 2014
    Publication date: October 2, 2014
    Inventors: Duncan J. Maitland, Thomas S. Wilson
  • Publication number: 20140260238
    Abstract: A resistively heated shape memory polymer device is operated using resistive heating to heat the shape memory polymer device. The resistively heated shape memory polymer device is made by providing a wire that includes a resistive medium. The wire is coated with a first shape memory polymer. The wire is exposed and electrical leads are attached to the wire. In one embodiment the shape memory polymer device is in the form of a clot destruction device. In another embodiment the shape memory polymer device is in the form of a microvalve. In another embodiment the shape memory polymer device is in the form of a micropump. In yet another embodiment the shape memory polymer device is in the form of a thermostat or relay switch.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventors: John E. Marion, III, Jane P. Bearinger, Thomas S. Wilson, Ward Small, IV, Duncan J. Maitland
  • Publication number: 20140260237
    Abstract: A resistively heated shape memory polymer device is made by providing a rod, sheet or substrate that includes a resistive medium. The rod, sheet or substrate is coated with a first shape memory polymer providing a coated intermediate unit. The coated intermediate unit is in turn coated with a conductive material providing a second intermediate unit. The second coated intermediate unit is in turn coated with an outer shape memory polymer. The rod, sheet or substrate is exposed and an electrical lead is attached to the rod, sheet or substrate. The conductive material is exposed and an electrical lead is attached to the conductive material.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventors: John E. Marion, III, Jane P. Bearinger, Thomas S. Wilson, Duncan J. Maitland
  • Publication number: 20140277057
    Abstract: A system for treating an aneurysm in a blood vessel or vein, wherein the aneurysm has a dome, an interior, and a neck. The system includes a shape memory polymer foam in the interior of the aneurysm between the dome and the neck. The shape memory polymer foam has pores that include a first multiplicity of pores having a first pore size and a second multiplicity of pores having a second pore size. The second pore size is larger than said first pore size. The first multiplicity of pores are located in the neck of the aneurysm. The second multiplicity of pores are located in the dome of the aneurysm.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicants: The Texas A&M University System, Lawrence Livermore National Security, LLC
    Inventors: Jason M. Ortega, William J. Benett, Ward Small, Thomas S. Wilson, Duncan J. Maitland, Jonathan Hartman
  • Patent number: 8685000
    Abstract: A shape memory material with integrated actuation using embedded particles. One embodiment provides a shape memory material apparatus comprising a shape memory material body and magnetic pieces in the shape memory material body. Another embodiment provides a method of actuating a device to perform an activity on a subject comprising the steps of positioning a shape memory material body in a desired position with regard to the subject, the shape memory material body capable of being formed in a specific primary shape, reformed into a secondary stable shape, and controllably actuated to recover the specific primary shape; including pieces in the shape memory material body; and actuating the shape memory material body using the pieces causing the shape memory material body to be controllably actuated to recover the specific primary shape and perform the activity on the subject.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: April 1, 2014
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Patrick R. Buckley, Duncan J. Maitland