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公开(公告)号：US11020507B2
公开(公告)日：2021-06-01
申请号：US16353793
申请日：2019-03-14
Inventor： Duncan J. Maitland , Todd Lawrence Landsman , Tyler Joseph Touchet , Elizabeth L. Cosgriff-Hernandez , Thomas S. Wilson
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.
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公开(公告)号：US20210015485A1
公开(公告)日：2021-01-21
申请号：US17032270
申请日：2020-09-25
Applicant: THE TEXAS A&M UNIVERSITY SYSTEM , SHAPE MEMORY MEDICAL, INC
Inventor： Duncan J. Maitland , Todd L. Landsman , Jennifer N. Rodriguez , Anthony J. Boyle , Alan C. Glowczwski , Mark A. Wierzbicki
IPC: A61B17/12
Abstract: An embodiment includes a system comprising: an outer conduit; a shape memory polymer (SMP) foam; a metal backbone including: (a)(i) a first portion that extends from the SMP foam proximal end to the SMP foam distal end and which is generally covered by the SMP foam, and (a)(ii) a distal portion that extends distally from the SMP foam distal end and which is not covered by the SMP foam; wherein: (b)(i) SMP foam and the metal backbone are both included within the outer conduit adjacent to the outer conduit distal end; (b)(ii) the metal backbone distal portion transitions from a secondary shape that is uncoiled to a primary shape that is coiled; and (b)(iii) the metal backbone distal portion is in the metal backbone distal portion secondary shape and is located between the SMP foam distal end and the distal end of the outer conduit.
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公开(公告)号：US20200325332A1
公开(公告)日：2020-10-15
申请号：US16870094
申请日：2020-05-08
Inventor： Jennifer N. Rodriguez , Duncan J. Maitland , Thomas S. Wilson
IPC: C08L75/04
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.
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公开(公告)号：US20200247939A1
公开(公告)日：2020-08-06
申请号：US16758419
申请日：2018-10-29
Inventor： Grace Fletcher , Landon D. Nash , Kendal Ezell , Duncan J. Maitland
Abstract: An embodiment includes a polymer composition comprising a thermoplastic polymer that: (a) is bonded to iodine, (b) includes a vinyl group, and (c) includes urethane linkages Other embodiments are described herein.
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公开(公告)号：US10730991B2
公开(公告)日：2020-08-04
申请号：US15548212
申请日：2016-02-02
Inventor： Keith Hearon , Landon D. Nash , Thomas Wilson , Duncan J. Maitland , Mark A. Wierzbicki
Abstract: An embodiment includes a platform shape memory polymer system. Such an embodiment exhibits a blend of tunable, high performance mechanical attributes in combination with advanced processing capabilities and good biocompatibility. A post-polymerization crosslinking synthetic approach is employed that combines polyurethane and thiol-ene synthetic processes. Other embodiments are described herein.
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Patent Agency Ranking
公开(公告)号：US20200230298A1
公开(公告)日：2020-07-23
申请号：US16652588
申请日：2018-10-10
Applicant: THE TEXAS A&M UNIVERSITY SYSTEM
Inventor： Duncan J. Maitland , Adam M. Orendain
Abstract: An embodiment includes an apparatus comprising: a shape memory polymer (SMP) foam having an outside surface; and a membrane that encapsulates at least 50% of the outside surface of the SMP foam; wherein (a) the SMP foam includes a thermoset SMP, and (b) the membrane includes a thermoplastic polymer. Other embodiments are addressed herein.
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公开(公告)号：US20190231362A1
公开(公告)日：2019-08-01
申请号：US16319931
申请日：2017-07-28
Applicant: The Texas A&M University System
Inventor： Duncan J. Maitland , Mark A. Wierzbicki , Landon D. Nash , Wonjun Hwang
CPC classification number: A61B17/12195 , A61B17/12113 , A61B17/12181 , A61B17/12186 , A61B90/39 , A61B2017/00092 , A61B2017/00867 , A61B2017/00871 , A61B2017/12068 , A61B2017/12072 , A61B2090/3966 , A61M29/00
Abstract: An embodiment includes a system comprising: a catheter; an optic fiber having a long axis and a short axis that is orthogonal to the long axis; first and second radiopaque elements coupled to the optic fiber; a first wire coupled to the optic fiber and extending from the first radiopaque element to the second radiopaque element; a fluid; wherein (a)(i) the first wire wraps at least partially around an exterior surface of the optic fiber; (a)(ii) an outer diameter of the first wire and an outer diameter of the optic fiber are collectively less than an inner diameter of the catheter, and (a)(iii) the first wire is configured to center the optic fiber within the catheter within a plane orthogonal to the long axis.
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公开(公告)号：US20190117830A1
公开(公告)日：2019-04-25
申请号：US16221224
申请日：2018-12-14
Inventor： Duncan J. Maitland , Thomas s. Wilson , Jennifer n. Rodriguez
Abstract: A method comprising: coupling a foam to a vibrator, wherein (a)(i) the foam includes first and second cells that share a ring of struts that provide structural support for the first and second cells, and (a)(ii) a membrane directly contacts the ring of struts; coupling an array of needles to the foam; vibrating the foam with the vibrator; in response to vibrating the foam, (b)(i) contacting at least one of the needles against at least one of the struts, (b)(ii) decoupling the at least one needle from the at least one strut and then coupling the at least one needle to the membrane, and (b)(iii) puncturing the membrane with the at least one needle and then puncturing additional membranes, also included in the foam, with the at least one needle to form a contiguous path configured to allow fluid to flow through the reticulated membranes.
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公开(公告)号：US20190015108A1
公开(公告)日：2019-01-17
申请号：US15754330
申请日：2016-09-02
Applicant: THE TEXAS A&M UNIVERSITY SYSTEM
Inventor： Duncan J. Maitland , Todd L. Landsman , Jennifer N. Rodriguez , Anthony J. Boyle , Alan C. Glowczwski , Mark A. Wierzbicki
IPC: A61B17/12
CPC classification number: A61B17/1219 , A61B17/12109 , A61B17/1215 , A61B17/12172 , A61B2017/00526 , A61B2017/00871 , A61B2017/00898 , A61B2017/12063
Abstract: An embodiment includes a system comprising: an outer conduit; a shape memory polymer (SMP) foam; a metal backbone including: (a)(i) a first portion that extends from the SMP foam proximal end to the SMP foam distal end and which is generally covered by the SMP foam, and (a)(ii) a distal portion that extends distally from the SMP foam distal end and which is not covered by the SMP foam; wherein: (b)(i) SMP foam and the metal backbone are both included within the outer conduit adjacent to the outer conduit distal end; (b)(ii) the metal backbone distal portion transitions from a secondary shape that is uncoiled to a primary shape that is coiled; and (b)(iii) the metal backbone distal portion is in the metal backbone distal portion secondary shape and is located between the SMP foam distal end and the distal end of the outer conduit.
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公开(公告)号：US20250143711A1
公开(公告)日：2025-05-08
申请号：US19018418
申请日：2025-01-13
Applicant: Lawrence Livermore National Security, Inc. , The Texas A&M University System , Shape Memory Medical, Inc.
Inventor： Jason M. Ortega , William J. Benett , Ward Small , Thomas S. Wilson , Duncan J. Maitland , Jonathan Hartman
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.
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