Patents by Inventor Mingfei Chen

Mingfei Chen 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: 8545831
    Abstract: In the present invention, the applicants describe methods and compositions of treating damaged cardiovascular elements and cardiovascular conditions including hypotension, atherosclerotic lesions, vulnerable plaque, and acute myocardial infarct. The applicants demonstrate the ability of a biomembrane sealing agent to accumulate on the walls of damaged blood vessels and help improving mean arterial pressure following tissue injury. The applicants describe the use of formulations comprising at least one biomembrane sealing agent and one bioactive agent for prophylactic treatment such as they could be administered concurrently to an invasive therapeutic intervention or after the insult (i.e. post-injury or post-surgery). Alternatively, these methods and compositions could be used to reduce the severity of cardiovascular diseases after onset.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: October 1, 2013
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Josee Roy, Hezi-Yamit Ayala, Carol Sullivan, Mingfei Chen
  • Publication number: 20120269897
    Abstract: Described herein are nitric oxide (NO)-donating poly(tetrafluoroethylene) (PTFE) polymers and polymer surfaces and methods of making and using the same. The NO-donating PTFE polymers can be used to fabricate at least a portion of an implantable medical device, coat at least a portion of an implantable medical device or form at least a portion of an implantable medical device. The NO-donating PTFE polymers provide controlled release of NO once implanted at or within the target site.
    Type: Application
    Filed: June 29, 2012
    Publication date: October 25, 2012
    Applicant: MEDTRONIC VASCULAR, INC.
    Inventors: Mingfei CHEN, Ayala HEZI-YAMIT
  • Patent number: 8273828
    Abstract: Biocompatible polymers having polymer backbones with at least one secondary amine suitable for diazeniumdiolation are disclosed. Specifically, methods for providing secondary amines-containing polymers using epoxide-opening reactions are provided. More specifically, nitric oxide-releasing medical devices made using these polymers are disclosed.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: September 25, 2012
    Assignee: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, Peiwen Cheng, Kishore Udipi
  • Publication number: 20120239131
    Abstract: Methods and apparatus for aiding aneurysm repair are provided. Such apparatus is constructed to support or bolster the aneurysmal site and supply a therapeutic agent to aid in healing the surrounding aneurysmal tissue.
    Type: Application
    Filed: March 15, 2012
    Publication date: September 20, 2012
    Applicant: Medtronic Vascular, Inc.
    Inventors: Oluwashola S. Sulaimon, Ayala Hezi-Yamit, Susan Rea-Peterson, Mingfei Chen
  • Patent number: 8241619
    Abstract: Disclosed are hindered amine nitric oxide (NO) donating polymers for coating implantable medical devices. The polymers include sterically hindered secondary amines that do not react with monomer carbonyls or electrophilic alkenes, facilitating the synthesis of the NO donating polymers. The polymers are coated on implantable medical devices, providing anti-restenosis therapy by the release of NO at the implantation site.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: August 14, 2012
    Assignee: Medtronic Vascular, Inc.
    Inventors: Peiwen Cheng, Mingfei Chen, Kishore Udipi
  • Patent number: 8236341
    Abstract: Described herein are nitric oxide (NO)-donating poly(tetrafluoroethylene) (PTFE) polymers and polymer surfaces and methods of making and using the same. The NO-donating PTFE polymers can be used to fabricate at least a portion of an implantable medical device, coat at least a portion of an implantable medical device or form at least a portion of an implantable medical device. The NO-donating PTFE polymers provide controlled release of NO once implanted at or within the target site.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: August 7, 2012
    Assignee: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, Ayala Hezi-Yamit
  • Patent number: 8182830
    Abstract: Described herein are hydrogen sulfide (H2S) generating polymers and polymer systems suitable for coating or forming medical devices and methods for making and using the same. More specifically, described are H2S generating polymers comprising at least one thioamide group. The H2S generating polymers can provide controlled site-specific release of H2S once implanted at or within the target surgical site by hydrolysis of the thioamide group in physiological media. The H2S generating polymers can be coated onto a medical device, formed into a medical device or combined with one or more other polymers to form a polymer system. Also described are methods of treating restenosis and inflammation and promoting vasodilation utilizing such medical devices.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: May 22, 2012
    Assignee: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, Christopher Storment, David Shumaker
  • Patent number: 8158187
    Abstract: The methods of the present disclosure in a broad aspect provide for dry diazeniumdiolation procedures for producing nitric oxide releasing medical devices. These medical devices may alternatively have cap coats applied prior to dry diazeniumdiolation to produce nitric oxide releasing medical devices with cap coats.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: April 17, 2012
    Assignee: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, Peiwen Cheng, Kishore Udipi
  • Patent number: 8137687
    Abstract: N-substituted 4-aza-caprolactone biodegradable polymers, including derivatives thereof, useful for making implantable medical devices and coatings therefore are provided. The medical devices and coatings of the present invention can also be used for in situ controlled release drug delivery and are useful for treating or preventing medical conditions such as restenosis, aneurisms and vulnerable plaque.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: March 20, 2012
    Assignee: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, Peiwen Cheng, Kishore Udipi
  • Patent number: 8088404
    Abstract: Biocompatible coatings for medical devices are disclosed. Specifically, polymer coatings designed to control the release of bioactive agents from medical devices in vivo are disclosed wherein the solubility parameters of polymers and drugs are closely matched to control elute rate profiles. The present application also discloses providing vascular stents with controlled release coatings and related methods for making these coatings.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: January 3, 2012
    Assignee: Medtronic Vasular, Inc.
    Inventors: Kishore Udipi, Peiwen Cheng, Mingfei Chen, Su-Ping Lyu
  • Publication number: 20110301299
    Abstract: Described herein are polymers useful for forming or coating implantable medical devices and such medical devices. The polymers are biocompatible and hemocompatible and comprise PTFE surfaces modified by covalently linking a nitric oxide releasing polymer to the PTFE surface through a linking group. Further described are precursor polymers and processes for preparing such polymers and precursor polymers.
    Type: Application
    Filed: June 8, 2010
    Publication date: December 8, 2011
    Applicant: Medtronic Vascular, Inc.
    Inventor: Mingfei Chen
  • Patent number: 8021679
    Abstract: Nitric Oxide (NO)-releasing polymers useful as implantable medical devices and coatings therefore are provided. Specifically the implantable medical devices and/or coatings comprise NO-releasing biodegradable polymers derived from [1,4] oxazepan-7-one and its derivatives. The medical devices and coatings of the present invention can also be used for in situ controlled release delivery of additional bioactive agents and are useful for treating or preventing medical conditions such as restenosis, aneurysms and vulnerable plaque.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: September 20, 2011
    Assignee: Medtronic Vascular, Inc
    Inventors: Mingfei Chen, Kishore Udipi, Peiwen Cheng
  • Publication number: 20110165216
    Abstract: Described herein are hydrogen sulfide (H2S) generating polymers and polymer systems suitable for coating or forming medical devices and methods for making and using the same. More specifically, described are H2S generating polymers comprising at least one thioamide group. The H2S generating polymers can provide controlled site-specific release of H2S once implanted at or within the target surgical site by hydrolysis of the thioamide group in physiological media. The H2S generating polymers can be coated onto a medical device, formed into a medical device or combined with one or more other polymers to form a polymer system. Also described are methods of treating restenosis and inflammation and promoting vasodilation utilizing such medical devices.
    Type: Application
    Filed: January 5, 2010
    Publication date: July 7, 2011
    Applicant: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, Christopher Storment, David Shumaker
  • Publication number: 20110150966
    Abstract: Disclosed herein are implantable medical devices having controlled release biodegradable polymer coatings thereon wherein the polymer is formed from ring opening of ?-butyrolactone and at least one additional monomer selected from the group consisting of trimethylene carbonate, lactide, polyethylene glycol, glycolide, the monomers formed from ring opening of ?-caprolactone, 4-tert-butyl caprolactone, and N-acetyl caprolactone, and combinations thereof, and at least one drug releasable from the biodegradable polymer. Also disclosed are implantable medical devices form of the biodegradable polymers and processes for forming the polymers.
    Type: Application
    Filed: February 28, 2011
    Publication date: June 23, 2011
    Applicant: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, Peiwen Cheng, Ya Guo, Kishore Udipi
  • Publication number: 20110104234
    Abstract: Disclosed herein are biodegradable modified caprolactone polymers for coating and forming medical devices. The properties of the polymers are fine tuned for optimal performance depending on the medical purpose. Moreover, the polymers are suitable for the controlled in situ release of drugs at the treatment site.
    Type: Application
    Filed: December 21, 2010
    Publication date: May 5, 2011
    Applicant: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, Peiwen Cheng, Ya Guo, Kishore Udipi
  • Patent number: 7897168
    Abstract: Disclosed herein are implantable medical devices having controlled release biodegradable polymer coatings thereon wherein the polymer is formed from ring opening of ?-butyrolactone and at least one additional monomer selected from the group consisting of trimethylene carbonate, lactide, polyethylene glycol, glycolide, the monomers formed from ring opening of ?-caprolactone, 4-tert-butyl caprolactone, and N-acetyl caprolactone, and combinations thereof, and at least one drug releasable from the biodegradable polymer. Also disclosed are implantable medical devices form of the biodegradable polymers and processes for forming the polymers.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: March 1, 2011
    Assignee: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, Peiwen Cheng, Ya Guo, Kishore Udipi
  • Patent number: 7815927
    Abstract: Disclosed herein are implantable medical devices comprising controlled release terpolymers and at least one drug releasable from said terpolymers coating. The terpolymers of the present invention are comprised of acrylate and/or vinyl monomers.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: October 19, 2010
    Assignee: Medtronic Vascular, Inc.
    Inventors: Peiwen Cheng, Kishore Udipi, Mingfei Chen
  • Publication number: 20100262238
    Abstract: The present disclosure in a broad aspect provides for diazeniumdiolated phosphorylcholine polymers and associated methods for achieving nitric oxide release. The present polymers have superior biocompatibility and are useful for coating or fabricating medical devices such as a vascular stent.
    Type: Application
    Filed: April 13, 2009
    Publication date: October 14, 2010
    Applicant: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, David Shumaker, Peiwen Cheng, Kishore Udipi
  • Patent number: 7811600
    Abstract: Disclosed are implantable medical devices comprising nitric oxide (NO) donating polymers comprising polymer backbones having at least one cyclic amine disposed thereon. Methods are further disclosed for providing nitric oxide-donating polymers.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: October 12, 2010
    Assignee: Medtronic Vascular, Inc.
    Inventors: Peiwen Cheng, Mingfei Chen, Kishore Udipi
  • Publication number: 20100256755
    Abstract: Described herein are nitric oxide (NO)-donating poly(tetrafluoroethylene) (PTFE) polymers and polymer surfaces and methods of making and using the same. The NO-donating PTFE polymers can be used to fabricate at least a portion of an implantable medical device, coat at least a portion of an implantable medical device or form at least a portion of an implantable medical device. The NO-donating PTFE polymers provide controlled release of NO once implanted at or within the target site.
    Type: Application
    Filed: April 2, 2009
    Publication date: October 7, 2010
    Applicant: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, Ayala Hezi-Yamit