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: 8216600
    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: November 14, 2007
    Date of Patent: July 10, 2012
    Inventor: Jonathon Z. Zhao
  • Patent number: 8197796
    Abstract: In accordance with the present invention, a high intensity radiopaque contrast agent is disclosed. The agent may be coated on or incorporated within bulk materials, which may then be subsequently utilized to fabricate a radiopaque medical device. Primary effects through chemistry include higher radiopaque concentrations per unit weight of the radiopaque element or agent. Secondary effects include selective placement of the radiopaque elements which may further enhance the radiopacity of the device with reduced requirements of the radiopaque agent. Such a radiopaque contrast agent may be produced in various forms such as a dendrimer and/or incorporated as the end groups of polymeric chain. In addition one can incorporate biological and/or pharmaceutical agents in combination with the present invention.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: June 12, 2012
    Inventor: Jonathon Z. Zhao
  • Publication number: 20120130481
    Abstract: A stent or other implantable medical device for the local delivery of a selective adenosine receptor agonist may be utilized in combination with other therapeutic agents to reduce myocardial injury following an acute myocardial infarction. As soon as possible following an acute myocardial infarction a stent or other suitable device comprising and capable of delivering a selective adenosine receptor agonist is positioned in the blood vessel with the occlusion responsible for causing the infarct. Once in position , the stent or other intraluminal device is deployed to remove the occlusion and reestablish blood flow to the specific area, region or tissue volume of the heart. Over a given period of time the selective adenosine receptor agonist alone or in combination with other therapeutic agents elute from the stent or other device into the downstream coronary blood flow into the hypoxic cardiac tissue for a time sufficient to reduce the level of myocardial injury.
    Type: Application
    Filed: December 17, 2010
    Publication date: May 24, 2012
    Inventors: Robert Falotico, Andrew Luk, Theodore L. Parker, Jonathon Z. Zhao
  • Publication number: 20110245332
    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: Application
    Filed: June 13, 2011
    Publication date: October 6, 2011
    Inventors: Robert Falotico, Jonathon Z. Zhao
  • Patent number: 8003122
    Abstract: Medical devices may be utilized for local and regional therapeutic agent delivery. These therapeutic agents or compounds may 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 restenosis, vulnerable plaque, and atherosclerosis in type 2 diabetic patients. In regional delivery, liquid formulations may be desirable to increase the efficacy and deliverability of the particular drug. Various materials and coating methodologies may be utilized to maintain the agents or compounds on the medical device until delivered and positioned.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: August 23, 2011
    Assignee: Cordis Corporation
    Inventor: Jonathon Z. Zhao
  • Publication number: 20110190876
    Abstract: Medical devices may be utilized for local and regional therapeutic agent delivery. These therapeutic agents or compounds may 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 restenosis, vulnerable plaque, and atherosclerosis in type 2 diabetic patients. In regional delivery, liquid formulations may be desirable to increase the efficacy and deliverability of the particular drug. Various materials and coating methodologies may be utilized to maintain the agents or compounds on the medical device until delivered and positioned.
    Type: Application
    Filed: April 14, 2011
    Publication date: August 4, 2011
    Inventor: Jonathon Z. Zhao
  • Patent number: 7989490
    Abstract: Liquid formulations, including solutions and suspensions of the various drugs, agents and/or compounds, may be locally or regionally delivered for the treatment of vascular disease. In each of these instances, antioxidants are utilized to prolong product integrity.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: August 2, 2011
    Assignee: Cordis Corporation
    Inventors: Robert Falotico, Jonathon Z. Zhao
  • Publication number: 20110178595
    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: March 30, 2011
    Publication date: July 21, 2011
    Inventor: Jonathon Z. Zhao
  • Patent number: 7947302
    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. Various materials and coating methodologies may be utilized to maintain the drugs, agents or compounds on the medical device until delivered and positioned.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: May 24, 2011
    Assignee: Cordis Corporation
    Inventors: Robert Falotico, Jonathon Z. Zhao
  • Publication number: 20110113728
    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: Application
    Filed: November 16, 2009
    Publication date: May 19, 2011
    Inventors: Robert Falotico, Chengxue Li, Thai M. Nguyen, Theodore L. Parker, Jonathon Z. Zhao
  • Patent number: 7939095
    Abstract: Coatings are provided in which surfaces may be activated by covalently bonding a combination ofsilane 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 21, 2006
    Date of Patent: May 10, 2011
    Assignee: Cordis Corporation
    Inventor: Jonathon Z. Zhao
  • Patent number: 7932265
    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. Therapeutic agents may also be delivered to the region of a disease site. In regional delivery, liquid formulations may be desirable to increase the efficacy and deliverability of the particular drug. Also, the devices may be modified to promote endothelialization.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: April 26, 2011
    Assignee: Cordis Corporation
    Inventors: Robert Falotico, Jonathon Z. Zhao
  • Publication number: 20110039876
    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. Therapeutic agents may also be delivered to the region of a disease site. In regional delivery, liquid formulations may be desirable to increase the efficacy and deliverability of the particular drug. Also, the devices may be modified to promote endothelialization.
    Type: Application
    Filed: October 21, 2010
    Publication date: February 17, 2011
    Inventors: Robert Falotico, Jonathon Z. Zhao
  • Publication number: 20110029070
    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, primer layers may be utilized.
    Type: Application
    Filed: October 18, 2010
    Publication date: February 3, 2011
    Inventors: Vipul Dave, Robert Falotico, Chengxue Li, Thai M. Nguyen, Theodore L. Parker, Jonathon Z. Zhao
  • Patent number: 7875282
    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. 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.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: January 25, 2011
    Assignee: Cordis Corporation
    Inventors: Robert Falotico, Tom Jay Parry, Jonathon Z. Zhao
  • Publication number: 20100331816
    Abstract: Medical devices may be utilized for local and regional therapeutic agent delivery. These therapeutic agents or compounds may 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 restenosis, vulnerable plaque, and atherosclerosis in type 2 diabetic patients.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 30, 2010
    Inventors: Ronald C. Dadino, Jonathon Z. Zhao
  • Patent number: 7846940
    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. Therapeutic agents may also be delivered to the region of a disease site. In regional delivery, liquid formulations may be desirable to increase the efficacy and deliverability of the particular drug. Also, the devices may be modified to promote endothelialization.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: December 7, 2010
    Assignee: Cordis Corporation
    Inventors: Robert Falotico, Jonathon Z. Zhao
  • Publication number: 20100304007
    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: Application
    Filed: August 11, 2010
    Publication date: December 2, 2010
    Inventors: Vipul Dave, Robert Falotico, Chengxue Li, Thai M. Nguyen, Theodore L. Parker, Jonathon Z. Zhao
  • Publication number: 20100280600
    Abstract: Implantable medical devices may be utilized to locally delivery one or more drugs or therapeutic agents to treat a wide variety of conditions, including the treatment of the biological organism's reaction to the introduction of the implantable medical device. These therapeutic agents may be released under controlled and directional conditions so that the one or more therapeutic agents reach the correct target area, for example, the surrounding tissue and/or the bloodstream.
    Type: Application
    Filed: April 30, 2009
    Publication date: November 4, 2010
    Inventors: Vipul Bhupendra Dave, Robert Falotico, Chengxue li, Thai Nguyen, Theodore L. Parker, Jonathon Z. Zhao
  • Patent number: 7819914
    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, primer layers may be utilized.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: October 26, 2010
    Assignee: Cordis Corporation
    Inventors: Vipul Dave, Robert Falotico, Chengxue Li, Thai M. Nguyen, Theodore L. Parker, Jonathon Z. Zhao