Patents by Inventor Peiwen Cheng

Peiwen Cheng 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: 10420640
    Abstract: Methods for detecting a coating on a surface of an intraocular lens delivery device and methods of manufacturing the device are provided. A method includes forming the coating on the device, the coating including a lubricious-enhancing component and a fluorescing component, illuminating the fluorescing component to cause the fluorescing component to emit a glow, and determining characteristics of the coating on the device based on the glow of the fluorescing component.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: September 24, 2019
    Assignee: Johnson & Johnson Surgical Vision, Inc.
    Inventors: Ahmed Helmy, Peiwen Cheng
  • Patent number: 9687368
    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: August 12, 2004
    Date of Patent: June 27, 2017
    Assignee: Medtronic Vascular, Inc.
    Inventors: Kishore Udipi, Peiwen Cheng, Shalaby W. Shalaby, Todd Campbell, Su Ping Lyu
  • Publication number: 20170128195
    Abstract: Methods for detecting a coating on a surface of an intraocular lens delivery device and methods of manufacturing the device are provided. A method includes forming the coating on the device, the coating including a lubricious-enhancing component and a fluorescing component, illuminating the fluorescing component to cause the fluorescing component to emit a glow, and determining characteristics of the coating on the device based on the glow of the fluorescing component.
    Type: Application
    Filed: January 23, 2017
    Publication date: May 11, 2017
    Inventors: Ahmed Helmy, Peiwen Cheng
  • Patent number: 9056153
    Abstract: The present disclosure generally relates to biocompatible polymers for coating or fabricating implantable medical devices and to implantable medical devices having the present biocompatible polymers. The disclosed biocompatible polymers exhibit superior biocompatibility and therefore minimize unwanted immune reaction from a patient into whom a medical device is implanted.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: June 16, 2015
    Assignee: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, Peiwen Cheng, Kishore Udipi
  • Patent number: 9056156
    Abstract: Disclosed are drug delivery systems comprising drugs admixed with polymers having drug solubility gradients and methods of making the polymers. Also disclosed are medical devices having coatings thereon comprising the drug solubility gradient-containing polymers and at least one drug.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: June 16, 2015
    Assignee: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, Peiwen Cheng, Kishore Udipi
  • Patent number: 8968763
    Abstract: Disclosed herein are implantable medical devices comprising controlled release biodegradable block copolymers or coated with controlled release block copolymers and at least one drug releasable from the block copolymer. The controlled release block copolymers comprise least two blocks selected from the group consisting of polyesters, polyethers, and polyurethanes.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: March 3, 2015
    Assignee: Medtronic Vascular, Inc.
    Inventors: Ya Guo, Peiwen Cheng
  • Patent number: 8871238
    Abstract: Biodegradable polymers useful for fabricating implantable medical devices and as coatings for medical devices are provided. The biodegradable polymers are biocompatible and can be tuned to provide optimum bioactive agent elution rates as well as degradation rates. Also provided are methods for making medical devices and medical device coatings using the biodegradable polymers.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: October 28, 2014
    Assignee: Medtronic Vascular, Inc.
    Inventors: Peiwen Cheng, Mingfei Chen, Kishore Udipi
  • Publication number: 20140314945
    Abstract: The gradient coated stent 150 of the present invention provides a coated stent having a continuous coating 130 disposed on the stent elements. The continuous coating 130 includes a first coating component and a second coating component. The concentration of the first coating component varies continuously over at least part of the thickness of the continuous coating 130. The concentration of the second coating component can also vary over at least part of the thickness of the continuous coating 130. In one embodiment, the concentration of the first coating component decreases in the direction from the stent element towards the outer edge of the continuous coating 130 and the concentration of the second coating component increases in the direction from the stent element towards the outer edge of the continuous coating 130.
    Type: Application
    Filed: June 30, 2014
    Publication date: October 23, 2014
    Inventors: Peiwen Cheng, Patrice Brint, Wenda Carlyle, Diane Judd, Kishore Udipi
  • Patent number: 8852620
    Abstract: Disclosed are drug delivery systems comprising drugs admixed with polymers having drug solubility gradients and methods of making the polymers. Also disclosed are medical devices having coatings thereon comprising the drug solubility gradient-containing polymers and at least one drug.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: October 7, 2014
    Assignee: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, Peiwen Cheng, Kishore Udipi
  • Patent number: 8801692
    Abstract: The gradient coated stent 150 of the present invention provides a coated stent having a continuous coating 130 disposed on the stent elements. The continuous coating 130 includes a first coating component and a second coating component. The concentration of the first coating component varies continuously over at least part of the thickness of the continuous coating 130. The concentration of the second coating component can also vary over at least part of the thickness of the continuous coating 130. In one embodiment, the concentration of the first coating component decreases in the direction from the stent element towards the outer edge of the continuous coating 130 and the concentration of the second coating component increases in the direction from the stent element towards the outer edge of the continuous coating 130.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: August 12, 2014
    Assignee: Medtronic Vascular, Inc.
    Inventors: Peiwen Cheng, Patrice Tremble, Wenda Carlyle, Diane Judd, Kishore Udipi
  • Publication number: 20140171956
    Abstract: Methods for detecting a coating on a surface of an intraocular lens delivery device and methods of manufacturing the device are provided. A method includes forming the coating on the device, the coating including a lubricious-enhancing component and a fluorescing component, illuminating the fluorescing component to cause the fluorescing component to emit a glow, and determining characteristics of the coating on the device based on the glow of the fluorescing component.
    Type: Application
    Filed: December 17, 2012
    Publication date: June 19, 2014
    Applicant: Abbott Medical Optics Inc.
    Inventors: Ahmed Helmy, Peiwen Cheng
  • Patent number: 8709465
    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: Grant
    Filed: April 13, 2009
    Date of Patent: April 29, 2014
    Assignee: Medtronic Vascular, Inc.
    Inventors: Mingfei Chen, David Shumaker, Peiwen Cheng, Kishore Udipi
  • Patent number: 8518097
    Abstract: The present invention provides a system for treating a vascular condition, including a catheter, a stent with a stent framework operably coupled to the catheter, and a drug-polymer coating on the stent framework including at least one plasticizer dispersed within the drug-polymer coating.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: August 27, 2013
    Assignee: Medtronic Vascular, Inc.
    Inventors: Kishore Udipi, Peiwen Cheng
  • Patent number: 8460238
    Abstract: A drug delivery catheter and method for delivering microcapsules or microspheres containing a drug, pharmacological or other bioactive agent includes a balloon catheter having a coating on the balloon of a soluble biocompatible polymer containing a plurality of microcapsules or microspheres containing a drug or other agent. The balloon is porous to allow it to be inflated with a solvent fluid that passes through the porous wall of the balloon and dissolves the polymer, releasing the microspheres.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: June 11, 2013
    Assignee: Medtronic Vascular, Inc.
    Inventors: Peiwen Cheng, Justin Peterson
  • 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
  • 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: 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
  • 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