Patents by Inventor Nadya Belcheva

Nadya Belcheva 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: 20190085143
    Abstract: Implantable biocompatible polymeric medical devices include a substrate with an acid or base-modified surface which is subsequently modified to include click reactive members.
    Type: Application
    Filed: November 20, 2018
    Publication date: March 21, 2019
    Inventors: Nadya Belcheva, Ferass Abuzaina, Amin Elachchabi, Mbiya Kapiamba, Ahmad Robert Hadba
  • Patent number: 10167371
    Abstract: Implantable biocompatible polymeric medical devices include a substrate with an acid or base-modified surface which is subsequently modified to include click reactive members.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: January 1, 2019
    Assignee: Covidien LP
    Inventors: Nadya Belcheva, Ferass Abuzaina, Amin Elachchabi, Mbiya Kapiamba, Ahmad Robert Hadba
  • Publication number: 20170073486
    Abstract: Implantable biocompatible polymeric medical devices include a substrate with an acid or base-modified surface which is subsequently modified to include click reactive members.
    Type: Application
    Filed: November 3, 2016
    Publication date: March 16, 2017
    Inventors: Nadya Belcheva, Ferass Abuzaina, Amin Elachchabi, Mbiya Kapiamba, Ahmad Robert Hadba
  • Patent number: 9555154
    Abstract: Implantable biocompatible polymeric medical devices include a substrate with a plasma-modified surface which is subsequently modified to include click reactive members.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: January 31, 2017
    Assignee: Covidien LP
    Inventors: Nadya Belcheva, Ferass Abuzaina, Amin Elachchabi, Mbiya Kapiamba, Ahmed Robert Hadba
  • Patent number: 9517291
    Abstract: Implantable biocompatible polymeric medical devices include a substrate with an acid or base-modified surface which is subsequently modified to include click reactive members.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: December 13, 2016
    Assignee: Covidien LP
    Inventors: Nadya Belcheva, Ferass Abuzaina, Amin Elachchabi, Mbiya Kapiamba, Ahmad Robert Hadba
  • Patent number: 9414876
    Abstract: A composite fixation device is described herein which includes a first and second biodegradable material. The first and second biodegradable materials degrade at different rates thereby permitting tissue ingrowth into the device prior to degradation of the entire device.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: August 16, 2016
    Assignee: Covidien LP
    Inventors: Nadya Belcheva, Joseph Hotter, Russell Heinrich
  • Patent number: 9247931
    Abstract: The present disclosure relates to an apparatus and process for forming medical devices from an injectable composition. The apparatus includes a supply assembly, a mixing assembly, and at least one source of microwave energy. The supply assembly is configured to maintain and selectively dispense a first precursor functionalized with a first reactive member and a second precursor functionalized with a second reactive member. The mixing assembly is configured to mix the first and second precursors within a mixing cavity defined therein. The microwave energy source is configured and adapted to irradiate the mixed first and second precursors within the mixing cavity.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: February 2, 2016
    Assignee: Covidien LP
    Inventor: Nadya Belcheva
  • Patent number: 9115156
    Abstract: Novel biodegradable phosphoester polyamines are disclosed. The biodegradable phosphoester polyamines may be utilized as cross-linkers for sprayable compositions which may be used as tissue adhesives or sealants.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: August 25, 2015
    Assignee: Covidien LP
    Inventors: Nadya Belcheva, Ahmad Robert Hadba
  • Publication number: 20150157769
    Abstract: Implantable biocompatible polymeric medical devices include a substrate with an acid or base-modified surface which is subsequently modified to include click reactive members.
    Type: Application
    Filed: February 13, 2015
    Publication date: June 11, 2015
    Inventors: Nadya Belcheva, Ferass Abuzaina, Amin Elachchabi, Mbiya Kapiamba, Ahmad Robert Hadba
  • Patent number: 8968818
    Abstract: Implantable biocompatible polymeric medical devices include a substrate with an acid or base-modified surface which is subsequently modified to include click reactive members.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: March 3, 2015
    Assignee: Covidien LP
    Inventors: Nadya Belcheva, Ferass Abuzaina, Amin Elachchabi, Mbiya Kapiamba, Ahmad Robert Hadba
  • Publication number: 20150051652
    Abstract: A composite fixation device is described herein which includes a first and second biodegradable material. The first and second biodegradable materials degrade at different rates thereby permitting tissue ingrowth into the device prior to degradation of the entire device.
    Type: Application
    Filed: November 3, 2014
    Publication date: February 19, 2015
    Inventors: Nadya Belcheva, Joseph Hotter, Russell Heinrich
  • Patent number: 8888828
    Abstract: A composite fixation device is described herein which includes a first and second biodegradable material. The first and second biodegradable materials degrade at different rates thereby permitting tissue ingrowth into the device prior to degradation of the entire device.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: November 18, 2014
    Assignee: Covidien LP
    Inventors: Nadya Belcheva, Joseph Hotter, Russell Heinrich
  • Patent number: 8790488
    Abstract: Biocompatible macromer compositions are provided including an isocyanate-functional polyalkylene oxide combined with at least one multi-functional isocyanate as a first component, and a multi-amino functional compound possessing multiple primary amines as a second component. The isocyanate-functional polyalkylene oxide has pendant polyalkylene oxide groups. The resulting biocompatible macromer composition can be employed as an adhesive or sealant for medical/surgical uses.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: July 29, 2014
    Assignee: Covidien LP
    Inventors: Ahmad R. Hadba, Nadya Belcheva
  • Patent number: 8748558
    Abstract: Methods for producing biocompatible compositions are provided. The biocompatible compositions include an aliphatic polyester macromer produced without the use of solvents or catalysts. The resulting aliphatic polyester macromer may be reacted with a polyisocyanate to form an end-capped aliphatic polyester macromer which, in turn, may be reacted with a polyol to produce a polyurethane. The polyurethane, in turn, may be reacted with a second polyisocyanate to produce an isocyanate-functional polyurethane. The compositions prepared by the methods of the present disclosure may be used as adhesives or sealants for medical/surgical uses.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: June 10, 2014
    Assignee: Covidien LP
    Inventors: Walter Skalla, Allison Calabrese, Ahmad R. Hadba, Nadya Belcheva
  • Publication number: 20140051879
    Abstract: Novel biodegradable phosphoester polyamines are disclosed. The biodegradable phosphoester polyamines may be utilized as cross-linkers for sprayable compositions which may be used as tissue adhesives or sealants.
    Type: Application
    Filed: October 24, 2013
    Publication date: February 20, 2014
    Applicant: Covidien LP
    Inventors: Nadya Belcheva, Ahmad Robert Hadba
  • Publication number: 20130319288
    Abstract: Packaging materials for medical devices are provided. The packaging is formed of a biodegradable material which permits disposal by conventional methods, including landfills, composting, and the like. Use of the packaging avoids undesirable disposal methods such as incineration and the like.
    Type: Application
    Filed: June 4, 2012
    Publication date: December 5, 2013
    Inventors: Nadya Belcheva, David Kirsch, Ahmad Robert Hadba
  • Patent number: 8591875
    Abstract: Novel biodegradable phosphoester polyamines are disclosed. The biodegradable phosphoester polyamines may be utilized as cross-linkers for sprayable compositions which may be used as tissue adhesives or sealants.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: November 26, 2013
    Assignee: Covidien LP
    Inventors: Nadya Belcheva, Ahmad R. Hadba
  • Publication number: 20130211448
    Abstract: The present disclosure relates to an apparatus and process for forming medical devices from an injectable composition. The apparatus includes a supply assembly, a mixing assembly, and at least one source of microwave energy. The supply assembly is configured to maintain and selectively dispense a first precursor functionalized with a first reactive member and a second precursor functionalized with a second reactive member. The mixing assembly is configured to mix the first and second precursors within a mixing cavity defined therein. The microwave energy source is configured and adapted to irradiate the mixed first and second precursors within the mixing cavity.
    Type: Application
    Filed: June 29, 2011
    Publication date: August 15, 2013
    Inventor: Nadya Belcheva
  • Patent number: 8487017
    Abstract: An implantable orthopedic medical device is disclosed. The medical devices is formed from a biodegradable polymer stereocomplex comprising a biodegradable polymer including a first enantiomer and a second enantiomer, wherein the implantable medical device initially degrades at a first degradation rate and subsequently degrades at a second degradation rate that is faster than the first degradation rate.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: July 16, 2013
    Assignee: Covidien LP
    Inventors: Nadya Belcheva, Joshua Stopek
  • Patent number: 8449714
    Abstract: Biocompatible macromer compositions are provided including an isocyanate-functional polyalkylene oxide combined with at least one multi-functional isocyanate as a first component, and a multi-amino functional compound possessing multiple primary amines as a second component. The isocyanate-functional polyalkylene oxide has pendant polyalkylene oxide groups. The resulting biocompatible macromer composition can be employed as an adhesive or sealant for medical/surgical uses.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: May 28, 2013
    Assignee: Covidien LP
    Inventors: Ahmad R. Hadba, Nadya Belcheva