Patents by Inventor Jonathon Z. Zhao

Jonathon Z. Zhao 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).

  • Patent number: 10029034
    Abstract: The present invention relates to drug-eluting articles with multiple polymeric coatings arranged and constructed to provide improved drug release profiles. Specifically, the present invention relates to drug-eluting articles that each comprises a substrate, a first polymeric layer over said substrate, and a second polymeric layer over said first polymeric layer. The first polymeric layer comprises at least a first biocompatible polymer and at least a first pharmacologically active compound that is encapsulated in the first biocompatible polymer. The second polymeric layer comprises at least a second biocompatible polymer having a degradability that is higher than that of the first biocompatible polymer.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: July 24, 2018
    Assignee: Cardinal Health Switzerland 515 Gmbh
    Inventors: Robert Falotico, Jonathon Z. Zhao
  • Patent number: 9603980
    Abstract: Medical devices, and in particular implantable medical devices, may be coated to minimize or substantially eliminate a biological organism's reaction to the introduction of the medical device to the organism. The medical devices may be coated with any number of biocompatible materials. Therapeutic drugs, agents or compounds may be mixed with the biocompatible materials and affixed to at least a portion of the medical device. These therapeutic agents or compounds may also further reduce a biological organism's reaction to the introduction of the medical device to the organism. In addition, these therapeutic drugs, agents and/or compounds may be utilized to promote healing, including the prevention of thrombosis. The drugs, agents, and/or compounds may also be utilized to treat specific disorders, including vulnerable plaque, and atherosclerosis in type 2 diabetic patients. Therapeutic agents may also be delivered to the region of a disease site.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: March 28, 2017
    Assignee: Cardinal Health Switzerland 515 GmbH
    Inventor: Jonathon Z. Zhao
  • Patent number: 9561310
    Abstract: The present invention includes biocompatible polymeric coatings, membranes, matrices, and films to be used with implantable medical devices. Medical devices containing such materials applied to a surface thereof contain a film-forming fluorous homo-polymer or copolymer containing the polymerized residue of a fluorous moiety, wherein the relative amounts of the polymerized residues of one or more moieties are effective to provide the coating and films with properties effective for use in coating implantable med devices.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: February 7, 2017
    Assignee: Cardinal Health Switzerland 515 GmbH
    Inventor: Jonathon Z. Zhao
  • Patent number: 9474637
    Abstract: A biocompatible metallic material may be configured into any number of implantable medical devices, including intraluminal stents. The biocompatible metallic material may comprise a magnesium alloy. The magnesium alloy implantable medical device may be designed to degrade over a given period of time. In order to control the degradation time, the device may be coated or otherwise have affixed thereto one or more coatings, one of which comprises a material for controlling the degradation time and maintain a pH neutral environment proximate the device. Additionally, therapeutic agents may be incorporated into one or more of the coatings on the implantable medical device.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: October 25, 2016
    Assignee: Cardinal Health Switzerland 515 GmbH
    Inventor: Jonathon Z. Zhao
  • Publication number: 20160262916
    Abstract: A biocompatible metallic material may be configured into any number of implantable medical devices, including intraluminal stents. The biocompatible metallic material may comprise a magnesium alloy. The magnesium alloy implantable medical device may be designed to degrade over a given period of time. In order to control the degradation time, the device may be coated or otherwise have affixed thereto one or more coatings, one of which comprises a material for controlling the degradation time and maintain a pH neutral environment proximate the device. Additionally, therapeutic agents may be incorporated into one or more of the coatings on the implantable medical device.
    Type: Application
    Filed: March 14, 2016
    Publication date: September 15, 2016
    Inventor: Jonathon Z. Zhao
  • Patent number: 9402804
    Abstract: Medical devices, and in particular implantable medical devices, may be coated to minimize or substantially eliminate a biological organism's reaction to the introduction of the medical device to the organism. The medical devices may be coated with any number of biocompatible materials. Therapeutic drugs, agents or compounds may be mixed with the biocompatible materials and affixed to at least a portion of the medical device. These therapeutic drugs, agents or compounds may also further reduce a biological organism's reaction to the introduction of the medical device to the organism. In addition, these therapeutic drugs, agents and/or compounds may be utilized to promote healing, including the formation of blood clots. The drugs, agents, and/or compounds may also be utilized to treat specific diseases, including vulnerable plaque. Therapeutic agents may also be delivered to the region of a disease site.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: August 2, 2016
    Assignee: Cardinal Health Switzerland 515 GmbH
    Inventors: Robert Falotico, Jonathon Z. Zhao
  • Patent number: 9370610
    Abstract: Coatings are provided in which surfaces may be activated by covalently bonding a combination of silane derivatives (A) to the metal surface, covalently bonding a lactone polymer (B) to the silane derivative by in situ ring opening polymerization, and depositing at least one layer of a polyester (C) on the bonded lactone polymer. Biologically active agents or therapeutic compounds may be deposited with any of the polyester layers. Such coated surfaces may be useful in medical devices, in particular stents.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: June 21, 2016
    Assignee: Cardinal Health Switzerland 515 GmbH
    Inventor: Jonathon Z. Zhao
  • Patent number: 9283304
    Abstract: A biocompatible metallic material may be configured into any number of implantable medical devices, including intraluminal stents. The biocompatible metallic material may comprise a magnesium alloy. The magnesium alloy implantable medical device may be designed to degrade over a given period of time. In order to control the degradation time, the device may be coated or otherwise have affixed thereto one or more coatings, one of which comprises a material for controlling the degradation time and maintain a pH neutral environment proximate the device. Additionally, therapeutic agents may be incorporated into one or more of the coatings on the implantable medical device.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: March 15, 2016
    Assignee: CARDINAL HEALTH SWITZERLAND 515 GmbH
    Inventor: Jonathon Z. Zhao
  • Patent number: 9265597
    Abstract: Medical devices, and in particular implantable medical devices, may be coated with any number of biocompatible materials. Therapeutic drugs, agents or compounds may be mixed with the biocompatible materials and affixed to at least a portion of the medical device. These therapeutic drugs, agents or compounds may also further reduce a biological organism's reaction to the introduction of the medical device to the organism. In addition, these therapeutic drugs, agents and/or compounds may be utilized to promote healing, including the formation of blood clots. Also, the devices may be modified to promote endothelialization. Various materials and coating methodologies may be utilized to maintain the drugs, agents or compounds on the medical device until delivered and positioned. In addition, various polymer combinations may be utilized to control the elution rates of the therapeutic drugs, agents and/or compounds from the implantable medical devices.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: February 23, 2016
    Inventors: Robert Falotico, Jonathon Z. Zhao
  • Patent number: 9114034
    Abstract: An expandable medical device includes a plurality of elongated struts, forming a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter. A plurality of different beneficial agents may be loaded into different openings within the struts for delivery to the tissue. For treatment of conditions such as restenosis, different beneficial agents are loaded into different openings in the device to address different biological processes involved in restenosis and are delivered at different release kinetics matched to the biological process treated. The different beneficial agents may also be used to address different diseases, such as restenosis and acute myocardial infarction from the same drug delivery device. In addition, anti-thrombotic agents may be affixed to at least a portion of the surfaces of the medical device for the prevention of sub-acute thrombosis.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: August 25, 2015
    Inventor: Jonathon Z. Zhao, Jr.
  • Publication number: 20150099056
    Abstract: Coatings are provided in which surfaces may be activated by covalently bonding a combination of silane derivatives (A) to the metal surface, covalently bonding a lactone polymer (B) to the silane derivative by in situ ring opening polymerization, and depositing at least one layer of a polyester (C) on the bonded lactone polymer. Biologically active agents or therapeutic compounds may be deposited with any of the polyester layers. Such coated surfaces may be useful in medical devices, in particular stents.
    Type: Application
    Filed: December 15, 2014
    Publication date: April 9, 2015
    Inventor: Jonathon Z. Zhao
  • Publication number: 20150080999
    Abstract: A self-expanding stent (10), which is created by laser-cutting a Nitinol alloy tubing. A strut pattern of the stent (10) is formed from a continuous helical band that proceeds circumferentially and longitudinally along the length of the stent (10). The helices are formed by repetitions of sinusoidal forms, with a bridge (12) linking the apexes of struts on neighboring adjacent rows directly opposite of each other, for every 4-8 apexes. The linking bridges are substantially straight such that non off-setting pitches is created at the two connected apexes, resulting in a substantially diamond space (71,72,73) between adjacent rows of the struts, instead of a substantially interdigitated space. The strut repetitions are substantially sinusoidal or in a zigzag fashion. The bridges link the apexes of the repetitions forms directly on adjacent rows of struts.
    Type: Application
    Filed: October 25, 2013
    Publication date: March 19, 2015
    Applicant: ZHEJIANG ZYLOX MEDICAL DEVICE CO., LTD.
    Inventor: Jonathon Z. Zhao
  • Publication number: 20150051242
    Abstract: A semi-synthetic rapamycin analog with a triazole moiety or a pharmaceutically acceptable salt or prodrug thereof, is a broad-spectrum cytostatic agent and a mTOR inhibitor, and is useful in the treatment of various cancers, or tumors in organs such as kidney, liver, breast, head and neck, lung, prostate, and restenosis in coronary arteries, peripheral arteries, and arteries in the brain, immune and autoimmune diseases. Also disclosed are fungal growth-, restenosis-, post-transplant tissue rejection- and immune- and autoimmune disease-inhibiting compositions and a method of inhibiting cancer, fungal growth, restenosois, post-transplant tissue rejection, and immune and autoimmune disease in a mammal.
    Type: Application
    Filed: November 30, 2012
    Publication date: February 19, 2015
    Applicant: ZHEJIANG ZYLOX MEDICAL DEVICE CO., LTD.
    Inventor: Jonathon Z. Zhao
  • Publication number: 20150044269
    Abstract: The present invention includes biocompatible polymeric coatings, membranes, matrices, and films to be used with implantable medical devices. Medical devices containing such materials applied to a surface thereof contain a film-forming fluorous homo-polymer or copolymer containing the polymerized residue of a fluorous moiety, wherein the relative amounts of the polymerized residues of one or more moieties are effective to provide the coating and films with properties effective for use in coating implantable med devices.
    Type: Application
    Filed: October 27, 2014
    Publication date: February 12, 2015
    Inventor: Jonathon Z. ZHAO
  • Publication number: 20150044268
    Abstract: The present invention includes biocompatible polymeric coatings, membranes, matrices, and films to be used with implantable medical devices. Medical devices containing such materials applied to a surface thereof contain a film-forming fluorous homo-polymer or copolymer containing the polymerized residue of a fluorous moiety, wherein the relative amounts of the polymerized residues of one or more moieties are effective to provide the coating and films with properties effective for use in coating implantable med devices.
    Type: Application
    Filed: October 27, 2014
    Publication date: February 12, 2015
    Inventor: Jonathon Z. Zhao
  • Patent number: 8927049
    Abstract: An expandable medical device includes a plurality of elongated struts, forming a substantially cylindrical device which is expandable from a first diameter to a second diameter. A plurality of different beneficial agents may be loaded into different openings within the struts for delivery to the tissue. For treatment of conditions such as restenosis, different agents are loaded into different openings in the device to address different biological processes involved in restenosis and are delivered at different release kinetics matched to the biological process treated. The different agents may also be used to address different diseases from the same drug delivery device. In addition, anti-thrombotic agents may be affixed to at least a portion of the surfaces of the medical device for the prevention of sub-acute thrombosis. To ensure that the different agents remain affixed to the device as well as to each other, masking and de-masking processes may be utilized.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: January 6, 2015
    Inventors: Vipul Dave, Robert Falotico, Chengxue Li, Thai M. Nguyen, Theodore L. Parker, Jonathon Z. Zhao
  • Patent number: 8911492
    Abstract: An implantable device having a coating comprising a comb-type anti-thrombotic conjugate to prevent or reduce the formation of thrombosis on the surface of the device. The device includes a frame expandable from a first diameter to a second diameter wherein the frame has an inner surface and an outer surface, a plurality of structural features disposed along the frame and a plurality of polymer anti-thrombotic conjugate particles situated with the plurality of structural features. The particle can be created utilizing the comb type polymer and heparin conjugate as a carrier for a therapeutic agent within its polymer matrix. The structural features allow for particles having differing properties to be placed at various locations along the device. Moreover, particles having at least two different agents can be located within the same structural feature.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: December 16, 2014
    Inventor: Jonathon Z. Zhao
  • Patent number: 8911764
    Abstract: Coatings are provided in which surfaces may be activated by covalently bonding a combination of silane derivatives (A) to the metal surface, covalently bonding a lactone polymer (B) to the silane derivative by in situ ring opening polymerization, and depositing at least one layer of a polyester (C) on the bonded lactone polymer. Biologically active agents or therapeutic compounds may be deposited with any of the polyester layers. Such coated surfaces may be useful in medical devices, in particular stents.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: December 16, 2014
    Inventor: Jonathon Z. Zhao
  • Patent number: 8887477
    Abstract: The invention provides a method for single-step terminal sterilization process for bio-active heparin coatings on materials and biomaterials containing heparin used in medical devices, such as catheters, tissue engineering scaffolds, or drug delivery carrier materials. This may include any medical device or implantable that could benefit from improved antithrombotic and biocompatible heparin surfaces. Other relevant device examples may include heparin or a heparin derivative coated stents to reduce clotting and restenosis, dental or ophthalmological implants. These materials may comprise additional polymeric compositions such as polyethyleneimine, dextran sulfate or their modified forms. These polymers together with heparin coatings may be applied to other substrate of medical devices such as metal, ceramics or biologically derived materials.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: November 18, 2014
    Inventors: Robert Falotico, Chengxue Li, Thai M. Nguyen, Theodore L. Parker, Jonathon Z. Zhao
  • Patent number: 8871239
    Abstract: The present invention includes biocompatible polymeric coatings, membranes, matrices, and films to be used with implantable medical devices. Medical devices containing such materials applied to a surface thereof contain a film-forming fluorous homo-polymer or copolymer containing the polymerized residue of a fluorous moiety, wherein the relative amounts of the polymerized residues of one or more moieties are effective to provide the coating and films with properties effective for use in coating implantable med devices.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: October 28, 2014
    Inventor: Jonathon Z. Zhao