Patents by Inventor Kareen Looi

Kareen Looi 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: 20210030283
    Abstract: Disclosed herein are computer-implemented real-time systems and methods for determining success of a revascularization procedure and/or wound healing of a patient, that can involve measuring blood perfusion characteristics utilizing diffuse speckle contrast analysis (DSCA), and determining blood perfusion and vascular health indices predictive of a likely positive or negative patient outcome, and communicating that outcome to an operator utilizing a display, etc.
    Type: Application
    Filed: March 11, 2020
    Publication date: February 4, 2021
    Inventors: Kareen Looi, Paul Hayes
  • Patent number: 9770349
    Abstract: The present invention relates generally to medical devices containing nanoporous surfaces and methods for making same. More specifically, the invention relates to implantable vascular stents or other biomedical devices having at least one dealloyed nanoporous layer that promotes improved cellular adhesion properties that promote healing and long term biocompatibility. In the case of stents, the nanoporous layer promotes re-endothelialization at sites of stent implantation vasculature, improves overall healing, and reduces inflammation and intimal disease progression. The nanoporous layer may be optionally loaded with one or more therapeutic agent to further improve the function of the implanted stent and further augment clinical efficacy.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: September 26, 2017
    Assignee: University of Virginia Patent Foundation
    Inventors: Gary Owens, Whye-Kei Lye, Michael Reed, Joshua Spradlin, Brian Wamhoff, Matthew Hudson, Kareen Looi
  • Patent number: 8623066
    Abstract: Devices, systems and methods for treating medical conditions using cell therapy via body lumens. Localized delivery is achieved with the use of a stent-like expandable body seeded with cells. The expandable body is expanded to contact at least a portion of the inner walls of the body lumen and the cells, cellular products and/or other therapeutic agents are delivered to the surrounding tissue. The therapeutic benefit provided is dependent on the type of cells used and the features of the expandable body.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: January 7, 2014
    Assignee: Medtronic Vascular, Inc.
    Inventors: Kareen Looi, Gary K. Owens
  • Patent number: 8449602
    Abstract: Implantable medical devices having at least one porous layer, and methods for making such devices, and loading such devices with therapeutic agents are described. A mixture or alloy is placed on the surface of a medical device, then one component of the mixture or alloy is generally removed without generally removing the other components of the mixture or alloy to create the pores of the porous layer. The porous layer may be adapted for bonding non-metallic coating, including drug eluting polymeric coatings. A porous layer may have a random pore structure or an oriented or directional grain porous structure. The medical device may be a vascular stent having at least one porous layer adapted to resist stenosis or cellular proliferation.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: May 28, 2013
    Assignee: Medtronic Vascular, Inc.
    Inventors: Whye-Kei Lye, Gary K. Owens, Brian R. Wamhoff, Matthew S. Hudson, Joshua Spradlin, Kareen Looi
  • Patent number: 8124166
    Abstract: The present invention relates generally to medical devices with therapy eluting components and methods for making same. More specifically, the invention relates to implantable medical devices having at least one porous layer, and methods for making such devices, and loading such devices with therapeutic agents. A mixture or alloy is placed on the surface of a medical device, then one component of the mixture or alloy is generally removed without generally removing the other components of the mixture or alloy. In some embodiments, a porous layer is adapted for bonding non-metallic coating, including drug eluting polymeric coatings. A porous layer may have a random pore structure or an oriented or directional grain porous structure. One embodiment of the invention relates to medical devices, including vascular stents, having at least one porous layer adapted to resist stenosis or cellular proliferation without requiring elution of therapeutic agents.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: February 28, 2012
    Assignee: Medtronic Vascular, Inc.
    Inventors: Gary Owens, Brian Wamhoff, Matthew S. Hudson, Whye-Kei Lye, Joshua Spradlin, Michael Reed, Kareen Looi
  • Publication number: 20100260922
    Abstract: The present invention relates generally to medical devices with therapy eluting components and methods for making same. More specifically, the invention relates to implantable medical devices having at least one porous layer, and methods for making such devices, and loading such devices with therapeutic agents. A mixture or alloy is placed on the surface of a medical device, then one component of the mixture or alloy is generally removed without generally removing the other components of the mixture or alloy. In some embodiments, a porous layer is adapted for bonding non-metallic coating, including drug eluting polymeric coatings. A porous layer may have a random pore structure or an oriented or directional grain porous structure. One embodiment of the invention relates to medical devices, including vascular stents, having at least one porous layer adapted to resist stenosis or cellular proliferation without requiring elution of therapeutic agents.
    Type: Application
    Filed: February 23, 2010
    Publication date: October 14, 2010
    Applicant: Medtronic Vascular, Inc.
    Inventors: Gary K. Owens, Brian R. Wamhoff, Matthew S. Hudson, Whye-Kei Lye, Joshua Spradlin, Michael Reed, Kareen Looi
  • Publication number: 20100125238
    Abstract: A system for delivering one or more therapeutic agents contained on or within a delivery segment through a passageway, e.g., a blood vessel, for treatment of a localized region of the passageway, or for treatment of region adjacent to the localized region of the passageway, is provided.
    Type: Application
    Filed: November 7, 2009
    Publication date: May 20, 2010
    Applicant: THERAWIRE, INC.
    Inventors: Whye-Kei Lye, Kareen Looi
  • Patent number: 7713573
    Abstract: The present invention relates generally to medical devices with therapy eluting components and methods for making same. More specifically, the invention relates to implantable medical devices having at least one porous layer, and methods for making such devices, and loading such devices with therapeutic agents. A mixture or alloy is placed on the surface of a medical device, then one component of the mixture or alloy is generally removed without generally removing the other components of the mixture or alloy. In some embodiments, a porous layer is adapted for bonding non-metallic coating, including drug eluting polymeric coatings. A porous layer may have a random pore structure or an oriented or directional grain porous structure. One embodiment of the invention relates to medical devices, including vascular stents, having at least one porous layer adapted to resist stenosis or cellular proliferation without requiring elution of therapeutic agents.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: May 11, 2010
    Assignee: Medtronic Vascular, Inc.
    Inventors: Gary K. Owens, Brian R. Wamhoff, Matthew S. Hudson, Whye-Kei Lye, Joshua Spradlin, Michael Reed, Kareen Looi
  • Patent number: 7500986
    Abstract: Apparatuses, systems and methods for treating a patient by positioning an expandable body (10) having one or more microstructures (14) within a body lumen and penetrating the lumen wall with the microstructures (14). The microstructures are formed in or attached to the lumen through a cacheter or other suitable device. Each microstructure (14) has an end (16) which is attached to the expandable body and a free end (18). Once the apparatus is positioned within the body lumen in a desired location one or more of the microstructures are deployed wherein the free ends project radially outwardly. The free ends of the deployed microstructures penetrate the lumen wall by continued expansion of the body. Additionally, a therapeutic agent may be delivered to the lumen wall by the penetrated microstructures.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: March 10, 2009
    Assignee: Medtronic Vascular, Inc.
    Inventors: Whye-Kei Lye, Michael L. Reed, Kareen Looi
  • Publication number: 20080138378
    Abstract: Devices, systems and methods for treating medical conditions using cell therapy via body lumens. Localized delivery is achieved with the use of a stent-like expandable body seeded with cells. The expandable body is expanded to contact at least a portion of the inner walls of the body lumen and the cells, cellular products and/or other therapeutic agents are delivered to the surrounding tissue. The therapeutic benefit provided is dependent on the type of cells used and the features of the expandable body.
    Type: Application
    Filed: December 21, 2007
    Publication date: June 12, 2008
    Inventors: Kareen Looi, Gary K. Owens
  • Publication number: 20080086198
    Abstract: The present invention relates generally to medical devices containing nanoporous surfaces and methods for making same. More specifically, the invention relates to implantable vascular stents or other biomedical devices having at least one nanoporous layer that promotes improved cellular adhesion properties that promote healing and long term biocompatibility. In the case of stents, the nanoporous layer promotes re-endothelialization at sites of stent implantation vasculature, improves overall healing, and reduces inflammation and intimal disease progression. The nanoporous layer may be optionally loaded with one or more therapeutic agent to further improve the function of the implanted stent and further augment clinical efficacy.
    Type: Application
    Filed: May 24, 2007
    Publication date: April 10, 2008
    Inventors: Gary Owens, Whye-Kei Lye, Michael Reed, Joshua Spradlin, Brian Wamhoff, Matthew Hudson, Kareen Looi
  • Patent number: 7294409
    Abstract: Methods for fabricating a medical device having at least one porous layer include providing a medical device having at least one alloy and removing at least one component of the alloy to form the porous layer. Although methods may be used to make stent devices with porous layers, any other suitable medical device may be made having one or more porous layers. An alloy may include any suitable combination of metals and sometimes a combination of metal and non-metal. In some embodiments, one or more of the most electrochemically active component(s) of an alloy are removed by the dissolving (or “dealloying”) process, to leave a porous matrix behind. The porous matrix layer may then be infused with one or more therapeutic agents for enhancing treatment of a patient.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: November 13, 2007
    Assignee: University of Virgina
    Inventors: Whye-Kei Lye, Kareen Looi, Michael L. Reed
  • Publication number: 20060276877
    Abstract: The present invention relates generally to medical devices with therapy eluting components and methods for making same. More specifically, the invention relates to implantable medical devices having at least one porous layer, and methods for making such devices, and loading such devices with therapeutic agents. A mixture or alloy is placed on the surface of a medical device, then one component of the mixture or alloy is generally removed without generally removing the other components of the mixture or alloy. In some embodiments, a porous layer is adapted for bonding non-metallic coating, including drug eluting polymeric coatings. A porous layer may have a random pore structure or an oriented or directional grain porous structure. One embodiment of the invention relates to medical devices, including vascular stents, having at least one porous layer adapted to resist stenosis or cellular proliferation without requiring elution of therapeutic agents.
    Type: Application
    Filed: May 9, 2006
    Publication date: December 7, 2006
    Inventors: Gary Owens, Whye-Kei Lye, Michael Reed, Joshua Spradlin, Brian Wamhoff, Matthew Hudson, Kareen Looi
  • Publication number: 20060276884
    Abstract: The present invention relates generally to medical devices with therapy eluting components and methods for making same. More specifically, the invention relates to implantable medical devices having at least one porous layer, and methods for making such devices, and loading such devices with therapeutic agents. A mixture or alloy is placed on the surface of a medical device, then one component of the mixture or alloy is generally removed without generally removing the other components of the mixture or alloy. In some embodiments, a porous layer is adapted for bonding non-metallic coating, including drug eluting polymeric coatings. A porous layer may have a random pore structure or an oriented or directional grain porous structure. One embodiment of the invention relates to medical devices, including vascular stents, having at least one porous layer adapted to resist stenosis or cellular proliferation without requiring elution of therapeutic agents.
    Type: Application
    Filed: May 10, 2006
    Publication date: December 7, 2006
    Inventors: Whye-Kei Lye, Gary Owens, Brian Wamhoff, Michael Reed, Kareen Looi, Joshua Spradlin
  • Publication number: 20060276885
    Abstract: The present invention relates generally to medical devices with therapy eluting components and methods for making same. More specifically, the invention relates to implantable medical devices having at least one porous layer, and methods for making such devices, and loading such devices with therapeutic agents. A mixture or alloy is placed on the surface of a medical device, then one component of the mixture or alloy is generally removed without generally removing the other components of the mixture or alloy. In some embodiments, a porous layer is adapted for bonding non-metallic coating, including drug eluting polymeric coatings. A porous layer may have a random pore structure or an oriented or directional grain porous structure. One embodiment of the invention relates to medical devices, including vascular stents, having at least one porous layer adapted to resist stenosis or cellular proliferation without requiring elution of therapeutic agents.
    Type: Application
    Filed: May 10, 2006
    Publication date: December 7, 2006
    Inventors: Whye-Kei Lye, Gary Owens, Michael Reed, Brian Wamhoff, Kareen Looi, Joshua Spradlin
  • Publication number: 20060276878
    Abstract: The present invention relates generally to medical devices with therapy eluting components and methods for making same. More specifically, the invention relates to implantable medical devices having at least one porous layer, and methods for making such devices, and loading such devices with therapeutic agents. A mixture or alloy is placed on the surface of a medical device, then one component of the mixture or alloy is generally removed without generally removing the other components of the mixture or alloy. In some embodiments, a porous layer is adapted for bonding non-metallic coating, including drug eluting polymeric coatings. A porous layer may have a random pore structure or an oriented or directional grain porous structure. One embodiment of the invention relates to medical devices, including vascular stents, having at least one porous layer adapted to resist stenosis or cellular proliferation without requiring elution of therapeutic agents.
    Type: Application
    Filed: May 9, 2006
    Publication date: December 7, 2006
    Inventors: Gary Owens, Whye-Kei Lye, Michael Reed, Joshua Spradlin, Brian Wamhoff, Matthew Hudson, Kareen Looi
  • Publication number: 20060271169
    Abstract: Methods for fabricating a medical device having at least one porous layer include providing a medical device having at least one alloy and removing at least one component of the alloy to form the porous layer. Although methods may be used to make stent devices with porous layers, any other suitable medical device may be made having one or more porous layers. An alloy may include any suitable combination of metals and sometimes a combination of metal and non-metal. In some embodiments, one or more of the most electrochemically active component(s) of an alloy are removed by the dissolving (or “dealloying”) process, to leave a porous matrix behind. The porous matrix layer may then be infused with one or more therapeutic agents for enhancing treatment of a patient.
    Type: Application
    Filed: May 11, 2006
    Publication date: November 30, 2006
    Inventors: Whye-Kei Lye, Kareen Looi, Michael Reed
  • Publication number: 20060193890
    Abstract: The present invention relates generally to medical devices with therapy eluting components and methods for making same. More specifically, the invention relates to implantable medical devices having at least one porous layer, and methods for making such devices, and loading such devices with therapeutic agents. A mixture or alloy is placed on the surface of a medical device, then one component of the mixture or alloy is generally removed without generally removing the other components of the mixture or alloy. In some embodiments, a porous layer is adapted for bonding non-metallic coating, including drug eluting polymeric coatings. A porous layer may have a random pore structure or an oriented or directional grain porous structure. One embodiment of the invention relates to medical devices, including vascular stents, having at least one porous layer adapted to resist stenosis or cellular proliferation without requiring elution of therapeutic agents.
    Type: Application
    Filed: February 10, 2006
    Publication date: August 31, 2006
    Inventors: Gary Owens, Brian Wamhoff, Matthew Hudson, Whye-Kei Lye, Joshua Spradlin, Michael Reed, Kareen Looi
  • Publication number: 20060193886
    Abstract: The present invention relates generally to medical devices with therapy eluting components and methods for making same. More specifically, the invention relates to implantable medical devices having at least one porous layer, and methods for making such devices, and loading such devices with therapeutic agents. A mixture or alloy is placed on the surface of a medical device, then one component of the mixture or alloy is generally removed without generally removing the other components of the mixture or alloy. In some embodiments, a porous layer is adapted for bonding non-metallic coating, including drug eluting polymeric coatings. A porous layer may have a random pore structure or an oriented or directional grain porous structure. One embodiment of the invention relates to medical devices, including vascular stents, having at least one porous layer adapted to resist stenosis or cellular proliferation without requiring elution of therapeutic agents.
    Type: Application
    Filed: February 10, 2006
    Publication date: August 31, 2006
    Inventors: Gary Owens, Whye-Kei Lye, Matthew Hudson, Brian Wamhoff, Joshua Spradlin, Kareen Looi
  • Publication number: 20060193887
    Abstract: The present invention relates generally to medical devices with therapy eluting components and methods for making same. More specifically, the invention relates to implantable medical devices having at least one porous layer, and methods for making such devices, and loading such devices with therapeutic agents. A mixture or alloy is placed on the surface of a medical device, then one component of the mixture or alloy is generally removed without generally removing the other components of the mixture or alloy. In some embodiments, a porous layer is adapted for bonding non-metallic coating, including drug eluting polymeric coatings. A porous layer may have a random pore structure or an oriented or directional grain porous structure. One embodiment of the invention relates to medical devices, including vascular stents, having at least one porous layer adapted to resist stenosis or cellular proliferation without requiring elution of therapeutic agents.
    Type: Application
    Filed: February 10, 2006
    Publication date: August 31, 2006
    Inventors: Gary Owens, Brian Wamhoff, Matthew Hudson, Whye-Kei Lye, Joshua Spradlin, Kareen Looi