Patents Assigned to Biosensors International Group, Ltd.
  • Publication number: 20130006350
    Abstract: An intravascular stent and method for inhibiting restenosis, following vascular injury, is disclosed. The stent has an expandable, linked-filament body and a drug-release coating formed on the stent-body filaments, for contacting the vessel injury site when the stent is placed in-situ in an expanded condition. The coating releases, for a period of at least 4 weeks, a restenosis-inhibiting amount of the macrocyclic triene immunosuppressive compound everolimus. The stent, when used to treat a vascular injury, gives good protection against clinical restenosis, even when the extent of vascular injury involves vessel overstretching by more than 30% diameter. Also disclosed is a stent having a drug-release coating composed of (i) 10 and 60 weight percent poly-dl-lactide polymer substrate and (ii) 40-90 weight percent of an anti-restenosis compound, and a polymer undercoat having a thickness of between 1-5 microns.
    Type: Application
    Filed: July 24, 2012
    Publication date: January 3, 2013
    Applicant: Biosensors International Group, Ltd.
    Inventors: John E. Shulze, Ronald E. Betts, Douglas R. Savage
  • Publication number: 20120330406
    Abstract: An improvement in drug-eluting stents, and method of their making, are disclosed. The surface of a metal stent is roughened to have a surface roughness of at least about 20 ?in (0.5 ?m) and a surface roughness range of between about 300-700 ?in (7.5-17.5 ?m). The roughened stent surface is covered with a polymer-free coating of a limus drug, to a coating thickness greater than the range of surface roughness of the roughened stent surface.
    Type: Application
    Filed: July 20, 2012
    Publication date: December 27, 2012
    Applicant: Biosensors International Group, Ltd.
    Inventors: Douglas R. Savage, John E. Shulze, Ronald E. Betts, Sepehr Fariabi, Shih-Horng Su
  • Publication number: 20120290076
    Abstract: A radially expandable, endovascular stent designed for placement at a site of vascular injury, for inhibiting restenosis at the site, a method of using, and a method of making the stent. The stent includes a radially expandable body formed of one or more metallic filaments and a liquid-infusible mechanical anchoring layer attached to or formed in outer surface of the filaments. A drug coating in the stent is composed of a substantially polymer-free composition of an anti-restenosis drug, and has a substratum infused in the anchoring layer and a substantially continuous surface stratum of drug that is brought into direct contact with the vessel walls at the vascular site. Thus, the rate of release of the anti-restenosis drug from the surface stratum into said vascular site is determined solely by the composition of said drug coating.
    Type: Application
    Filed: July 24, 2012
    Publication date: November 15, 2012
    Applicant: Biosensors International Group, Ltd.
    Inventors: Douglas R. SAVAGE, Ronald E. BETTS
  • Patent number: 8308795
    Abstract: An intravascular stent and method for inhibiting restenosis, following vascular injury, is disclosed. The stent has an expandable, linked-filament body and a drug-release coating formed on the stent-body filaments, for contacting the vessel injury site when the stent is placed in-situ in an expanded condition. The coating releases, for a period of at least 4 weeks, a restenosis-inhibiting amount of a monocyclic triene immunosuppressive compound having an alkyl group substituent at carbon position 40 in the compound. The stent, when used to treat a vascular injury, gives good protection against clinical restenosis, even when the extent of vascular injury involves vessel overstretching by more than 30% diameter. Also disclosed is a stent having a drug-release coating composed of (i) 10 and 60 weight percent poly-dl-lactide polymer substrate and (ii) 40-90 weight percent of an anti-restenosis compound, and a polymer undercoat having a thickness of between 1-5 microns.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: November 13, 2012
    Assignee: Biosensors International Group, Ltd.
    Inventors: John E. Shulze, Ronald E. Betts, Douglas R. Savage
  • Patent number: 8273116
    Abstract: Medical devices and methods for delivery or implantation of prostheses within hollow body organs and vessels or other luminal anatomy are disclosed. The subject technologies may be used in the treatment of atherosclerosis in stenting procedures or be used in variety of other procedures. The systems may employ a self expanding stent restrained by one or more members released by an electrolytically erodable latch. Such release means do not connect directly to the implant, though one or more portions may contact it.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: September 25, 2012
    Assignee: Biosensors International Group, Ltd.
    Inventors: David Licata, Sudip R. Pandya
  • Patent number: 8252047
    Abstract: A radially expandable, endovascular stent designed for placement at a site of vascular injury, for inhibiting restenosis at the site, a method of using, and a method of making the stent. The stent includes a radially expandable body formed of one or more metallic filaments and a liquid-infusible mechanical anchoring layer attached to or formed in outer surface of the filaments. A drug coating in the stent is composed of a substantially polymer-free composition of an anti-restenosis drug, and has a substratum infused in the anchoring layer and a substantially continuous surface stratum of drug that is brought into direct contact with the vessel walls at the vascular site. Thus, the rate of release of the anti-restenosis drug from the surface stratum into said vascular site is determined solely by the composition of said drug coating.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: August 28, 2012
    Assignee: Biosensors International Group, Ltd.
    Inventors: Douglas R. Savage, Ronald E. Betts
  • Patent number: 8252046
    Abstract: An intravascular stent and method for inhibiting restenosis, following vascular injury, is disclosed. The stent has an expandable, linked-filament body and a drug-release coating formed on the stent-body filaments, for contacting the vessel injury site when the stent is placed in-situ in an expanded condition. The coating releases, for a period of at least 4 weeks, a restenosis-inhibiting amount of the macrocyclic triene immunosuppressive compound everolimus. The stent, when used to treat a vascular injury, gives good protection against clinical restenosis, even when the extent of vascular injury involves vessel overstretching by more than 30% diameter. Also disclosed is a stent having a drug-release coating composed of (i) 10 and 60 weight percent poly-dl-lactide polymer substrate and (ii) 40-90 weight percent of an anti-restenosis compound, and a polymer undercoat having a thickness of between 1-5 microns.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: August 28, 2012
    Assignee: Biosensors International Group, Ltd.
    Inventors: John E. Shulze, Ronald E. Betts, Douglas R. Savage
  • Patent number: 8236041
    Abstract: A device and method for treating pathological narrowing of fluid-carrying conduits of the human body (such as blood vessels) in an area of a bifurcation is disclosed. In particular, a stent system carries a self expandable noncylindrical stent, which is particularly suited for treating a widened portion of a blood vessel immediately proximal to a bifurcation. A stent delivery system is also disclosed, for delivering the stent such that a larger expanded diameter end of the stent faces the bifurcation, and a smaller expanded diameter end of the stent faces proximally in the main vessel.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: August 7, 2012
    Assignee: Biosensors International Group, Ltd.
    Inventors: Jacques Sequin, Robert John Elicker, Jean-Claude Laborde
  • Publication number: 20120116502
    Abstract: Devices and methods for controlling the flaking of coating fragments from medical implants and improving the delivery of therapeutic agents from such coatings are described.
    Type: Application
    Filed: November 14, 2011
    Publication date: May 10, 2012
    Applicant: Biosensors International Group, Ltd.
    Inventors: Shih-Horng SU, Fuh-Sheng Chen, Debashis Dutta
  • Publication number: 20120046736
    Abstract: Devices and methods for controlling the flaking of coating fragments from medical implants and improving the delivery of therapeutic agents from such coatings are described.
    Type: Application
    Filed: November 4, 2009
    Publication date: February 23, 2012
    Applicant: Biosensors International Group, Ltd.
    Inventors: Shih-Horng Su, Fuh-Sheng Chen, Debashis Dutta
  • Patent number: 8067055
    Abstract: A radially expandable, endovascular stent designed for placement at a site of vascular injury, for inhibiting restenosis at the site, a method of using, and a method of making the stent. The stent includes a radially expandable body formed of one or more metallic filaments where at least one surface of the filaments has a roughened or abraded surface. The stent may include a therapeutic agent on the abraded surface.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: November 29, 2011
    Assignee: Biosensors International Group, Ltd.
    Inventors: Douglas R. Savage, John E. Shulze, Ronald E. Betts, Sepehr Fariabi, Shih-Horng Su
  • Patent number: 8016869
    Abstract: The invention provides an atraumatic, low profile device for the delivery of one or more implants into tubular organs or open regions of the body. The implant delivery device may simultaneously or independently release portions of the implant, e.g., the proximal and distal ends of the implant. This independent release feature allows better implant positioning at the target site. Upon deployment, the implants may be placed at the target site without a sheath.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: September 13, 2011
    Assignee: Biosensors International Group, Ltd.
    Inventor: Julian Nikolchev
  • Publication number: 20110160835
    Abstract: Medical devices and methods for delivery or implantation of prostheses within hollow body organs and vessels or other luminal anatomy are disclosed. The subject technologies may be used in the treatment of atherosclerosis in stenting procedures or be used in variety of other procedures. The systems may employ a self expanding stent restrained by one or more members released by an electrolytically erodable latch. Such release means do not connect directly to the implant, though one or more portions may contact it.
    Type: Application
    Filed: November 30, 2010
    Publication date: June 30, 2011
    Applicant: BioSensors International Group, Ltd.
    Inventors: David Licata, Sudip R. Pandya
  • Publication number: 20110123704
    Abstract: A radially expandable, endovascular stent designed for placement at a site of vascular injury, for inhibiting restenosis at the site, a method of using, and a method of making the stent. The stent includes a radially expandable body formed of one or more metallic filaments and a liquid-infusible mechanical anchoring layer attached to or formed in outer surface of the filaments. A drug coating in the stent is composed of a substantially polymer-free composition of an anti-restenosis drug, and has a substratum infused in the anchoring layer and a substantially continuous surface stratum of drug that is brought into direct contact with the vessel walls at the vascular site. Thus, the rate of release of the anti-restenosis drug from the surface stratum into said vascular site is determined solely by the composition of said drug coating.
    Type: Application
    Filed: February 8, 2011
    Publication date: May 26, 2011
    Applicant: Biosensors International Group, Ltd.
    Inventors: Douglas R. Savage, Ronald E. Betts
  • Publication number: 20110106236
    Abstract: A biodegradable polymer stent with radiopacity and a method of making and using a stent with enhanced mechanical strength and/or controlled degradation for use in a bodily lumen is described.
    Type: Application
    Filed: October 4, 2010
    Publication date: May 5, 2011
    Applicant: Biosensors International Group, Ltd.
    Inventors: Shih-Horng Su, John E. Shulze, Debashis Dutta, John Nguyen
  • Patent number: 7901451
    Abstract: A radially expandable, endovascular stent designed for placement at a site of vascular injury, for inhibiting restenosis at the site, a method of using, and a method of making the stent. The stent includes a radially expandable body formed of one or more metallic filaments and a liquid-infusible mechanical anchoring layer attached to or formed in outer surface of the filaments. A drug coating in the stent is composed of a substantially polymer-free composition of an anti-restenosis drug, and has a substratum infused in the anchoring layer and a substantially continuous surface stratum of drug that is brought into direct contact with the vessel walls at the vascular site. Thus, the rate of release of the anti-restenosis drug from the surface stratum into said vascular site is determined solely by the composition of said drug coating.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: March 8, 2011
    Assignee: Biosensors International Group, Ltd.
    Inventors: Douglas R. Savage, Ronald E. Betts, John E. Shulze
  • Patent number: 7862602
    Abstract: Medical devices and methods for delivery or implantation of prostheses within hollow body organs and vessels or other luminal anatomy are disclosed. The subject technologies may be used in the treatment of atherosclerosis in stenting procedures or be used in variety of other procedures. The systems may employ a self expanding stent restrained by one or more members released by an electrolytically erodable latch. Such release means do not connect directly to the implant, though one or more portions may contact it.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: January 4, 2011
    Assignee: Biosensors International Group, Ltd
    Inventors: David Licata, Sudip R. Pandya
  • Publication number: 20100312328
    Abstract: An intravascular stent and method for inhibiting restenosis, following vascular injury, is disclosed. The stent has an expandable, linked-filament body and a drug-release coating formed on the stent-body filaments, for contacting the vessel injury site when the stent is placed in-situ in an expanded condition. The coating releases, for a period of at least 4 weeks, a restenosis-inhibiting amount of a monocyclic triene immunosuppressive compound having an alkyl group substituent at carbon position 40 in the compound. The stent, when used to treat a vascular injury, gives good protection against clinical restenosis, even when the extent of vascular injury involves vessel overstretching by more than 30% diameter. Also disclosed is a stent having a drug-release coating composed of (i) 10 and 60 weight percent poly-dl-lactide polymer substrate and (ii) 40-90 weight percent of an anti-restenosis compound, and a polymer undercoat having a thickness of between 1-5 microns.
    Type: Application
    Filed: January 29, 2010
    Publication date: December 9, 2010
    Applicant: Biosensors International Group, Ltd.
    Inventors: John E. SHULZE, Ronald E. Betts, Douglas R. Savage
  • Publication number: 20100262230
    Abstract: An automated apparatus and method for coating medical devices such as an intravascular stent, are disclosed in the method, a 2-D image of a stent is processed to determine (1) paths along the stent skeletal elements by which a stent secured to a rotating support element can be traversed by a dispenser head whose relative motion with respect to the support element is along the support-element axis, such that some or all of the stent skeletal elements will be traversed (2) the relative speeds of the dispenser head and support element as the dispenser head travels along the paths, and (3), and positions of the dispenser head with respect to a centerline of the stent elements as the dispenser head travels along such paths The rotational speed of the support and relative linear speed of the dispenser are controlled to achieve the desired coating thickness and coating coverage on the upper surfaces, and optionally, the side surfaces, of the stent elements
    Type: Application
    Filed: November 14, 2008
    Publication date: October 14, 2010
    Applicant: BIOSENSORS INTERNATIONAL GROUP, LTD.
    Inventors: Ivan Vecerina, Vinh Pham
  • Patent number: 7727275
    Abstract: An intravascular stent and method for inhibiting restenosis, following vascular injury, is disclosed. The stent has an expandable, linked-filament body and a drug-release coating formed on the stent-body filaments, for contacting the vessel injury site when the stent is placed in-situ in an expanded condition. The coating releases, for a period of at least 4 weeks, a restenosis-inhibiting amount of a monocyclic triene immunosuppressive compound having an alkyl group substituent at carbon position 40 in the compound. The stent, when used to treat a vascular injury, gives good protection against clinical restenosis, even when the extent of vascular injury involves vessel overstretching by more than 30% diameter. Also disclosed is a stent having a drug-release coating composed of (i) 10 and 60 weight percent poly-di-lactide polymer substrate and (ii) 40-90 weight percent of an anti-restenosis compound, and a polymer undercoat having a thickness of between 1-5 microns.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: June 1, 2010
    Assignee: Biosensors International Group, Ltd.
    Inventors: Ronald E. Betts, Douglas R. Savage