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公开(公告)号：US11357488B2
公开(公告)日：2022-06-14
申请号：US16751436
申请日：2020-01-24
Applicant: THE TEXAS A&M UNIVERSITY SYSTEM
Inventor： Mark A. Wierzbicki , Duncan Maitland , Matthew W. Miller , Andrea D. Muschenborn , Landon Nash , Jason M. Szafron , Todd Landsman
Abstract: A device for a tissue channel includes a device frame, a shape memory polymer foam segment coupled to the device frame, and an attachment structure coupled to the device frame. The device frame includes a proximal structure, a distal structure, and an intermediate structure coupled to the proximal structure and the distal structure. The proximal structure is configured to collapse to fit into a delivery structure and expand to block migration of the proximal structure. The distal structure is configured to collapse to fit into the delivery structure and expand to block migration of the distal structure. The intermediate structure is configured to fit in the tissue channel upon device deployment. The shape memory polymer foam segment is configured to compress to fit into the delivery structure and occlude the channel. The attachment structure is configured to attach and detach the device from a delivery guide.
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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：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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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：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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Patent Agency Ranking
公开(公告)号：US12239304B2
公开(公告)日：2025-03-04
申请号：US17837111
申请日：2022-06-10
Applicant: THE TEXAS A&M UNIVERSITY SYSTEM
Inventor： Mark A. Wierzbicki , Duncan Maitland , Matthew W. Miller , Andrea D. Muschenborn , Landon Nash , Jason M. Szafron , Todd Landsman
Abstract: A device for a tissue channel includes a device frame, a shape memory polymer foam segment coupled to the device frame, and an attachment structure coupled to the device frame. The device frame includes a proximal structure, a distal structure, and an intermediate structure coupled to the proximal structure and the distal structure. The proximal structure is configured to collapse to fit into a delivery structure and expand to block migration of the proximal structure. The distal structure is configured to collapse to fit into the delivery structure and expand to block migration of the distal structure. The intermediate structure is configured to fit in the tissue channel upon device deployment. The shape memory polymer foam segment is configured to compress to fit into the delivery structure and occlude the channel. The attachment structure is configured to attach and detach the device from a delivery guide.
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公开(公告)号：US11944317B2
公开(公告)日：2024-04-02
申请号：US17846449
申请日：2022-06-22
Inventor： Duncan J. Maitland , Todd L. Landsman , Jennifer N. Rodriguez , Anthony J. Boyle , Alan C. Glowczwski , Mark A. Wierzbicki
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：US20230250212A1
公开(公告)日：2023-08-10
申请号：US18189277
申请日：2023-03-24
Inventor： Keith Hearon , Landon D. Nash , Thomas Wilson , Duncan J. Maitland , Mark A. Wierzbicki
CPC classification number: C08G18/3206 , C08G18/6715 , C08G18/758 , C08G18/3212 , C08L81/02 , C08L75/16 , C08L75/04 , C08G18/675 , C08G18/73 , B29K2105/04
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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公开(公告)号：US11613603B2
公开(公告)日：2023-03-28
申请号：US16924819
申请日：2020-07-09
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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公开(公告)号：US11576679B2
公开(公告)日：2023-02-14
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
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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