Monofilament Patents (Class 623/1.33)
  • Patent number: 11103345
    Abstract: Embodiments of a radially collapsible and expandable prosthetic heart valve are disclosed. The prosthetic valve can comprise an annular frame, leaflets, an inner skirt, and an outer skirt. The outer skirt can be secured to the outside of the inflow end portion of the frame, the outer skirt having longitudinal slack that buckles outward radially when the valve is in the expanded configuration and which lies flat when the valve is in the collapsed configuration. In some embodiments, the outer skirt is stiffer in the axial direction of the valve than in the circumferential direction of the valve. In additional embodiments, the outer skirt comprises a self-expandable fabric comprising fibers made of a shape memory material having a shape memory set to enhance the radially outward buckling of the outer skirt. Methods of crimping such valves to a collapsed or partially collapsed configuration are also disclosed.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: August 31, 2021
    Assignee: Edwards Lifesciences Corporation
    Inventors: Tamir S. Levi, Ron Sharoni, Elena Sherman, Oren H. Wintner, Kevin D. Rupp, Son V. Nguyen, Ajay Chadha, Jeff Lindstrom
  • Patent number: 10357349
    Abstract: The present invention relates to a filler for removing wrinkles, which comprises: a thin and long tubular main body to be placed so as to penetrate through subcutaneous tissue; and through-holes for guiding tissue cells surrounding the main body into the main body, so as to form fibrous tissue, wherein the through-holes are formed so as to communicate with a hollow portion formed in said main body in the lengthwise direction from the outer surface of said main body. The filler for removing wrinkles according to the present invention is prevented from being deformed or moved by pressure on the skin or by an external force arising after being inserted into the subcutaneous tissue, and can be applied to various body parts having wrinkles, including deep wrinkles. Furthermore, the wrinkle-removing effects of the filler of the present invention may last (semi)permanently.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: July 23, 2019
    Assignee: HBMEDICALS CO., LTD.
    Inventor: Hoon-Bum Lee
  • Patent number: 10292809
    Abstract: An endoluminal prosthesis (110) for a curved vessel includes a tubular graft defining a lumen between a proximal end and a distal end, the tubular graft comprising a proximal section (114) and a second section distal (116) of the proximal section, where a proximal end of the second section is adjacent to a distal end of the proximal section. The proximal section includes a first biocompatible material having pliable textile strands aligned in a first direction interwoven with pliable textile strands aligned in a second direction. The second section includes a second biocompatible material having textile strands aligned in a first direction interwoven with textile strands aligned in a second direction, where the proximal section is more pliable than the second section.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: May 21, 2019
    Assignee: Cook Medical Technologies LLC
    Inventors: Shyam S V Kuppurathanam, B. Thomas Roberts
  • Patent number: 10195025
    Abstract: Embodiments of a radially collapsible and expandable prosthetic heart valve are disclosed. The prosthetic valve can comprise an annular frame, leaflets, an inner skirt, and an outer skirt. The outer skirt can be secured to the outside of the inflow end portion of the frame, the outer skirt having longitudinal slack that buckles outward radially when the valve is in the expanded configuration and which lies flat when the valve is in the collapsed configuration. In some embodiments, the outer skirt is stiffer in the axial direction of the valve than in the circumferential direction of the valve. In additional embodiments, the outer skirt comprises a self-expandable fabric comprising fibers made of a shape memory material having a shape memory set to enhance the radially outward buckling of the outer skirt. Methods of crimping such valves to a collapsed or partially collapsed configuration are also disclosed.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: February 5, 2019
    Inventors: Tamir S. Levi, Ron Sharoni, Elena Sherman, Oren H. Wintner, Kevin D. Rupp, Son V. Nguyen, Ajay Chadha, Jeff Lindstrom
  • Patent number: 9517123
    Abstract: An endovascular prosthesis that includes a stent and a woven graft material. The stent is connected to the graft material by direct attachment of the stent to the graft material at thermoplastically fused regions of the graft material.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: December 13, 2016
    Assignee: Cook Medical Technologies LLC
    Inventors: Alan R. Leewood, Blayne A. Roeder, Neal E. Fearnot, Jicaho Sun
  • Patent number: 8986393
    Abstract: A radiation and radiochemically sterilized, multi-component, fiber-reinforced composite, absorbable/disintegratable urinogenital stent, such as an endoureteral stent, with radiomodulated residence time in the biological site of 1 to 10 weeks depending on the high energy radiation dose used for sterilization.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: March 24, 2015
    Assignee: Poly-Med, Inc.
    Inventors: Shalaby W. Shalaby, Kenneth W. Clinkscales, Kenneth D. Gray
  • Patent number: 8911491
    Abstract: A stent graft extends in a flow lumen to span a defective portion of the flow lumen and seal the defective portion from further blood contact. The stent graft includes a pair of apertures, from which extensions project into the renal arteries to seal the passage of blood into the renal arteries from the abnormality. The apertures are larger than the opening of the renal arteries, such that the apertures need not be centered with the renal arteries to enable placement of the extensions. The aperture opening and side branch extensions contain hook and loop structures to provide a variably positionable seal of the aperture opening.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: December 16, 2014
    Assignee: Medtronic Vascular, Inc.
    Inventors: Curtis Hanson, Scott Cook, Joseph Lessar
  • Publication number: 20140330364
    Abstract: An endoprosthesis includes a stent structure having an elongate member longitudinal portions of which overlap to define the crossover structures. The stent structure may also include loop structures, which are contiguous with the crossover structures, through which a filament extends. A guard structure is secured to the stent structure and located adjacent to the crossover structures to obstruct displacement of the filament between the longitudinal portions of the elongate member of the crossover structures. A method for operating the endoprosthesis includes displacing the loop structures toward one another along the filament to displaced positions relative to the suture structure for reducing the respective profiles of the stent structure and patch structure.
    Type: Application
    Filed: July 21, 2014
    Publication date: November 6, 2014
    Applicant: BOSTON SCIENTIFIC SCIMED INC.
    Inventors: Srinath Tupil, James Biggins, William Bertolino
  • Patent number: 8784473
    Abstract: An endoprosthesis includes a stent structure having an elongate member longitudinal portions of which overlap to define the crossover structures. The stent structure may also include loop structures, which are contiguous with the crossover structures, through which a filament extends. A guard structure is secured to the stent structure and located adjacent to the crossover structures to obstruct displacement of the filament between the longitudinal portions of the elongate member of the crossover structures. A method for operating the endoprosthesis includes displacing the loop structures toward one another along the filament to displaced positions relative to the suture structure for reducing the respective profiles of the stent structure and patch structure.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: July 22, 2014
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Srinath Tupil, James Biggins, William Bertolino
  • Patent number: 8252064
    Abstract: Absorbable/disintegratable endourological stents, specifically endoureteral stents, and applicators for their introduction into the biological site, are formed from fiber-reinforced elastomeric films configured to prevent their migration from the application site.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: August 28, 2012
    Assignee: Poly-Med, Inc.
    Inventors: Shalaby W. Shalaby, Kenneth W. Clinkscales
  • Patent number: 8162900
    Abstract: A method of non-delaminably bonding a non-porous thermoplastic elastomer to a substrate by heating a bilayer of the elastomer and the substrate for a predetermined time and a product obtained by the method. Methods for producing non-delaminable conduits and non-delaminable kink-resistant conduits constructed of biocompatible elastomers and substrates, and products produced by these methods are taught. Methods, products, and articles of manufacture relating to non-delaminable monofilament supported kink-resistive conduits that may be used as inflow conduits in left ventricular assist devices for treatment of heart failure are also provided.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: April 24, 2012
    Assignee: Edwards Lifesciences Corporation
    Inventors: Donald T. Shannon, Chris Kuo, Benny Tu, Mike Randall
  • Patent number: 8083805
    Abstract: This invention deals with an absorbable/disintegratable endo-urological stent and applicators for introduction into biological conduits, including such as urethras and ureters, with said stent comprising a fiber-reinforced, multicomponent tube made of polyesters having a range of physicochemical properties.
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: December 27, 2011
    Assignee: Poly-Med, Inc.
    Inventor: Shalaby W. Shalaby
  • Patent number: 8083806
    Abstract: A radiation and radiochemically sterilized, multi-component, fiber-reinforced composite, absorbable/disintegratable urinogenital stent, such as an endoureteral stent, with radiomodulated residence time in the biological site of 1 to 10 weeks depending on the high energy radiation dose used for sterilization.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: December 27, 2011
    Assignee: Poly-Med, Inc.
    Inventors: Shalaby W Shalaby, Kenneth W Clinkscales, Kenneth David Gray
  • Patent number: 8062354
    Abstract: A tape-reinforced tubular vascular graft formed of sintered fluoropolymer(s), such as expanded, sintered PTFE. The graft includes a base graft and a reinforcing tape applied thereto. The tape may be spirally wrapped about the graft or spirally wrapped into a tube about a cylindrical mandrel and then applied to the exterior of the graft. Radial shrinkage of the combined base graft and tape, or of the reinforcing tape tube, renders the vascular graft subsequently radially enlargeable by more than 5%, without tearing or breaking of the reinforcement tape layer of the graft. Radially enlargeable grafts of the present invention may be combined with various types of stents or anchoring systems, to form endovascular graft devices which are transluminally insertable and implantable within the lumen of a host blood vessel.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: November 22, 2011
    Assignee: Edwards Lifesciences Corporation
    Inventors: Donald Shannon, John McIntyre, Chris Kuo, Chris McCollam, Robert Peterson
  • Patent number: 7833263
    Abstract: An implantable vascular graft includes an outer tube structure formed of a textile material, and an inner tube structure formed of a non-textile material. The inner tube structure is within the outer tube structure in coaxial relation therewith. One or both of the outer and inner tube structures have deformable reinforced portions incorporated therein. The deformable reinforced portions provide for conformance of the associated one or both of the outer and inner tube structures to a vessel of a patient. An implantable laminate prosthesis includes a first layer structure formed of textile material, and a second layer structure formed of non-textile material. The first and second layer structures are secured together in laminating relation. The first or second layer structure has a reinforced portion.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: November 16, 2010
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Robert C. Thistle
  • Patent number: 7722664
    Abstract: A modular elongated stent having an overlap region where two modular components fit together, the overlap region being relatively stiff as compared to another more flexible region of the stent when the stent is in an assembled configuration, the stent further comprising a mimic region that has a stiffness essentially equivalent to the stiffness of the overlap region, to provide kink resistance. A stent having such a mimic region or otherwise stiff region and a flexible region may have a transition region between the stiff and flexible regions, also to provide kink resistance. A stent may have relatively stiff regions and relatively flexible regions positioned to align the flexible regions with curved regions of a body lumen when deployed within the body lumen. The stiffness of the stiff, flexible, and transition regions may be controlled by varying the cross-sectional area of the stent components and/or by varying the stent architecture.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: May 25, 2010
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: David J. Zarbatany, Ari Moskowitz, Fergus Quigley, Lukas J. Hijlkema
  • Publication number: 20090105809
    Abstract: An implantable stent includes multiple circumferential segments that surround a bore and are connected in series along a length to form a tubular wall. Multiple adjacent alternating opposite facing crowns arranged along each segment's circumference are bridged by struts. The struts include a series of staggered arcuate edges with limited flats to provide a limited region of maximum width between significantly extended reducing diameter tapers at either end where they transition into the crowns. Connections between adjacent segments are wider and stiffer than the struts and strut-crown transitions in the segments. The crowns include inner and outer radii with off-set centers along a common axis to provide medial crown peaks along the axis that are wider than the narrowed crown shoulders on either side of the axis and from which the tapered struts extend. Material strain and flexure along the stent during lateral bending is distributed mainly within the segments, e.g.
    Type: Application
    Filed: November 20, 2007
    Publication date: April 23, 2009
    Inventors: Michael J. Lee, Stuart Earl Kari, Riley King
  • Patent number: 7185677
    Abstract: A helical formation (2) for a conduit (1). The helical formation (2) comprises an elongate member defining at least a portion of a helix, the elongate member comprising two inwardly extending portions (6, 7). The inwardly extending portions (6, 7) are spaced from each other and extend along the length of the elongate member in side-by-side relationship.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: March 6, 2007
    Assignee: Tayside Flow Technologies Limited
    Inventors: John Graeme Houston, Robert Gordon Hood, John Bruce Cameron Dick, Craig McLeod Duff, Allana Johnstone, Christophe Emmanuel Sarran, Peter Arno Stonebridge
  • Patent number: 6881221
    Abstract: An improved endoluminal prosthesis is described which possesses increased flexibility and longitudinal compliance with a stent/graft/stent securement member combination.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: April 19, 2005
    Assignee: SciMed Life Systems, Inc.
    Inventor: Ellen Golds
  • Publication number: 20040122508
    Abstract: An intraluminal graft includes a tubular graft body extending along a cylindrical axis, a plurality of wires spaced apart from each other and arranged to circumferentially reinforce said tubular graft body along a substantial portion of its length, and a body surface including an inner surface region and an outer surface region. The body surface defines a plurality of apertures extending from an exterior space, and a first portion of a first wire is in the interior space while a second portion of the first wire is in the exterior space.
    Type: Application
    Filed: December 12, 2003
    Publication date: June 24, 2004
    Inventors: Geoffrey H. White, Weiyun Yu
  • Publication number: 20040049264
    Abstract: The present invention provides an expanded tubular graft formed of expanded polytetrafluoroethylene (ePTFE). The graft has first and second open ends and a surface longitudinally extending between the ends. The graft also includes an inner and outer cylindrical walls, where the walls have crimps located along the surface of the graft. Additionally, the graft is coated with biocompatible elastomer covering portions of the outer cylindrical walls of the PTFE graft. The resulting ePTFE crimped graft exhibits various enhanced properties, such as adjustable graft length, high kink resistance, improved suture retention and high crush resistance as compared to the same graft without the crimps.
    Type: Application
    Filed: September 6, 2002
    Publication date: March 11, 2004
    Applicant: SCIMED Life Systems, Inc.
    Inventors: Krzysztof Sowinski, Jamie S. Henderson
  • Publication number: 20030139806
    Abstract: A composite intraluminal prosthesis which is preferably used as a vascular prothesis includes a layer of ePTFE and a layer of textile material which are secured together by an elastomeric bonding agent. The ePTFE layer includes a porous microstructure defined by nodes interconnected by fibrils. The adhesive bonding agent is preferably applied in solution so that the bonding agent enters the pores of the microstructure of the ePTFE. This helps secure the textile layer to the ePTFE layer.
    Type: Application
    Filed: June 11, 2002
    Publication date: July 24, 2003
    Applicant: Scimed Life Systems, Inc.
    Inventors: Pat Haverkost, Paul Chouinard, Ronald Rakos, Krzyzstoff Sowinski
  • Publication number: 20030017775
    Abstract: A composite intraluminal prosthesis which is preferably used as a vascular prothesis includes a layer of ePTFE and a layer of textile material which are secured together by an elastomeric bonding agent. The ePTFE layer includes a porous microstructure defined by nodes interconnected by fibrils. The adhesive bonding agent is preferably applied in solution so that the bonding agent enters the pores of the microstructure of the ePTFE. This helps secure the textile layer to the ePTFE layer.
    Type: Application
    Filed: June 11, 2002
    Publication date: January 23, 2003
    Applicant: SCIMED Life Systems. Inc..
    Inventors: Krzysztof Sowinski, Ronald Rakos, Jerry Dong, Dennis Kujawski
  • Publication number: 20020099441
    Abstract: A woven vascular graft having a texturized outer surface to promote tissue ingrowth into the graft. The outer surface of the graft is equipped with a plurality of threads that are woven into, and extend from, the outer surface. The threads may be arranged in rows, lines or a geometric pattern. Alternatively, the threads may be towel-like. Such towel-like threads may be arranged in the form of a cuff at each end of the graft, or may cover larger portions of the exterior of the graft. The graft may be equipped with only one texture, or with a plurality of different textures.
    Type: Application
    Filed: October 31, 2001
    Publication date: July 25, 2002
    Applicant: EDWARDS LIFESCIENCES, LLC
    Inventor: Mark Dehdashtian
  • Publication number: 20020082674
    Abstract: A tubular graft/stent comprises a tubular sheath having at intervals along its length a plurality of ring-like rigid members, which are attached to the sheath around their respective circumferences and are made of a shape memory material, so that when the members change shape the sheath adopts a new cross section in conformity with the members along the sheath's whole length. The members may be discontinuous to allow the adoption of a contracted shape in the martensitic phase and an expanded shape in the austenitic phase. A graft may also have a branched side tube which can be inverted so as to be housed within the sheath.
    Type: Application
    Filed: October 19, 2001
    Publication date: June 27, 2002
    Inventors: Anthony Walter Anson, Peter Phillips, Julian Ellis, Alan McLeod, Gail Beaton, Peter Butcher
  • Publication number: 20020049489
    Abstract: A prosthesis and a method of making a prosthesis having a needle containment and support structure that minimizes needle point plowing and/or needle scoring and inhibits delamination of the support structure during cannulization of the prosthesis. The prosthesis includes a first tube of expanded polytetrafluoroethylene (ePTFE), a polymer membrane, preferably ePTFE, positioned about the exterior surface of the first tube, and at least one support structure wound along a winding axis about the membrane to form axially spaced-apart ridges on the membrane. The support structure is a bead, filament, or similar structure that is wound about the exterior surface in a helical or spiral pattern to form the spaced apart-ridges. Alternatively, a plurality of spaced support rings can be employed to form the ridges. The ridges are preferably spaced apart a distance effective to direct a needle to a puncture site at an angle that inhibits needle plowing and hole enlarging, approximately less than 1.
    Type: Application
    Filed: July 11, 2001
    Publication date: April 25, 2002
    Inventors: Steve A. Herweck, Paul Martakos, Chad Carlton
  • Patent number: 6344052
    Abstract: A thin-walled prosthesis is provided that includes a tubular graft formed of a monofilament fiber. The graft has sufficient strength and durability to withstand loads applied during deployment and while implanted and sufficiently low permeability to prevent excessive leakage of body fluids through the material or to provide a sufficient seal, for example, so as to prevent aneurysm pressurization. A preferred embodiment of the present invention relates to a tubular grafts constructed of monofilament fibers for endoluminal placement within a body lumens, including blood vessels, and for the treatment of abdominal and other aneurysms.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: February 5, 2002
    Assignee: World Medical Manufacturing Corporation
    Inventors: Trevor Greenan, Howard Leonhardt
  • Patent number: 6312458
    Abstract: An improved endoluminal prosthesis is described which possesses increased flexibility and longitudinal compliance with a stent/graft/stent securement member combination.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: November 6, 2001
    Assignee: Scimed Life Systems, Inc.
    Inventor: Ellen Golds