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: 20130066368
    Abstract: A method of forming a loop in a thread is provided. The method includes the steps of providing a loop forming system including, a base for securely retaining a thread to be formed and a welding assembly for forming a loop in the thread, contacting at least a portion of the thread with a super-critical fluid and securing the previously immersed portion of the thread to the base such that a first section of the previously immersed portion is maintained adjacent to a second section of the previously immersed portion. The method further includes the steps of approximating the welding assembly and the base towards each other, and approximating the welding assembly and base away from each other. Also provided is a medical device formed from the method.
    Type: Application
    Filed: August 6, 2012
    Publication date: March 14, 2013
    Applicant: Tyco Healthcare Group LP
    Inventors: Nadya Belcheva, Norman Aminuddin, Jessica Gould
  • Patent number: 8357361
    Abstract: Bioabsorbable macromer compositions are provided including a diisocyanate-functional bioabsorbable polymer. In some embodiments, the diisocyanate-functional bioabsorbable polymer can be combined with a functionalized polyol. The resulting bioabsorbable macromer composition can be employed as an adhesive or sealant for medical/surgical uses.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: January 22, 2013
    Assignee: Covidien LP
    Inventors: Ahmad R. Hadba, Nadya Belcheva
  • Publication number: 20120329901
    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: Application
    Filed: June 27, 2011
    Publication date: December 27, 2012
    Inventors: Nadya Belcheva, Joshua Stopek
  • Patent number: 8288477
    Abstract: Flowable bioabsorbable compounds are provided which are useful in producing surgical adhesive or sealant compositions.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: October 16, 2012
    Assignee: Tyco Healthcare Group LP
    Inventors: Ahmad R. Hadba, John Kennedy, Nadya Belcheva, Jon T. Reinprecht, Sajida S. Faroogi
  • Patent number: 8269025
    Abstract: The present disclosure provides methods for purifying p-dioxanone. In embodiments, crude p-dioxanone may be contacted with at least one isocyanate-functionalized scavenger. The at least one isocyanate-functionalized scavenger may react with hydroxyl compounds present with the crude p-dioxanone to form reaction products, in embodiments polyurethanes and/or polyureas, which may then be removed. The p-dioxanone thus obtained is of greater purity than the starting crude p-dioxanone.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: September 18, 2012
    Assignee: Tyco Healthcare Group LP
    Inventors: Nadya Belcheva, Trang Huynh, Darlene Nebinger, Ronald Rutka
  • Publication number: 20120231165
    Abstract: A process for grafting polymers onto or within a substrate material is disclosed. The process includes exposing the substrate to a supercritical fluid composition including one or more aliphatic cyclic polyesters and a catalyst.
    Type: Application
    Filed: March 1, 2012
    Publication date: September 13, 2012
    Inventor: Nadya Belcheva
  • Patent number: 8261907
    Abstract: A kit for storing and applying an adhesive removing device comprising an enclosure which includes a base portion and a removable top layer releasably secured to the base portion; an adhesive removing device including at least one wiping mechanism which includes at least one absorbent portion; and a biocompatible composition including a solvent and a moisturizing agent embedded in the absorbent portion of the wiping mechanism. A method for storing and applying an adhesive removing device comprises a series of steps for using the adhesive removing device to remove an adhesive from a surface.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: September 11, 2012
    Assignee: Tyco Healthcare Group LP
    Inventors: Danyel J. Tarinelli, Ahmad R. Hadba, Nadya Belcheva
  • Patent number: 8207264
    Abstract: The present disclosure relates to crosslinked polymer compositions comprising an inclusion complex functionalized with one or more reactive groups and a polymer functionalized with one or more complimentary reactive groups.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: June 26, 2012
    Assignee: Tyco Healthcare Group LP
    Inventor: Nadya Belcheva
  • Publication number: 20120083838
    Abstract: Sutures are provided having an elongate body and a separately connectable end effector. The elongate body includes a first connection structure, which connects the end effector to the elongate body.
    Type: Application
    Filed: October 1, 2010
    Publication date: April 5, 2012
    Applicant: Tyco Healthcare Group LP
    Inventors: Gregory G. Okoniewski, Nadya Belcheva
  • Publication number: 20120046737
    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 19, 2010
    Publication date: February 23, 2012
    Inventors: Nadya Belcheva, Ferass Abuzaina, Amin Elachchabi, Mbiya Kapiamba, Ahmad Robert Hadba
  • Publication number: 20120041546
    Abstract: Implantable biocompatible polymeric medical devices include a substrate with a plasma-modified surface which is subsequently modified to include click reactive members.
    Type: Application
    Filed: February 19, 2010
    Publication date: February 16, 2012
    Inventors: Nadya Belcheva, Ferass Abuzaina, Amin Elachchabi, Mbiya Kapiamba, Ahmed Robert Hadba
  • Patent number: 8044234
    Abstract: Compounds are provided which can form bioabsorbable compositions useful as adhesives or sealants for medical/surgical applications. In embodiments, suitable compositions may possess various functional groups, including groups derived from multifunctional compounds, aliphatic or aromatic groups, groups derived from aliphatic diacids, groups derived from a dihydroxy compound, and combinations thereof. Methods for forming these compositions, as well as uses thereof, are also provided.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: October 25, 2011
    Assignee: Tyco Healthcare Group LP
    Inventors: Ahmad R. Hadba, Walter Skalla, Nadya Belcheva
  • Patent number: 8034396
    Abstract: The present disclosure provides compositions which may be utilized as adhesives or sealants in medical and surgical applications. The compositions may, in embodiments, be formed from the cycloaddition reaction of a first component possessing at least one azide group with a second component possessing at least one alkyne group.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: October 11, 2011
    Assignee: Tyco Healthcare Group LP
    Inventors: Mbiya Kapiamba, Nadya Belcheva
  • Patent number: 7998466
    Abstract: The disclosure relates to compositions for medical/surgical synthetic adhesives and sealants. Adhesive compositions include a functionalized triol and functionalized diol, while sealant compositions further include a multifunctionalized polyol and at least one amine cross linker.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: August 16, 2011
    Assignee: Tyco Healthcare Group LP
    Inventors: Ahmad R. Hadba, Nadya Belcheva
  • Publication number: 20110129512
    Abstract: The present disclosure is directed to polymers having hydroxyl containing bioactive agents incorporated into the backbone of the polymer or attached thereto by pendant linkages. Hydroxyl containing bioactive agents which may be attached to these polymers include antimicrobial agents such as triclosan. The polymers may be utilized to form medical devices or coatings for such devices. The hydroxyl containing bioactive agent may be released from the polymer upon hydrolysis of the polymeric backbone or pendant linkage in vivo.
    Type: Application
    Filed: January 28, 2011
    Publication date: June 2, 2011
    Applicant: Tyco Healthcare Group LP
    Inventors: Mark Roby, John Kennedy, Joshua B. Stopek, Brian Cuevas, Nadya Belcheva
  • Patent number: 7947263
    Abstract: Biocompatible synthetic macromer compositions are provided including a first polymer having multiple functional groups and a second functionalized polyurethane prepolymer, which can be employed as an adhesive or sealant for medical/surgical uses.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: May 24, 2011
    Assignee: Tyco Healthcare Group LP
    Inventors: Ahmad R. Hadba, Nadya Belcheva, John Kennedy, Mark Roby
  • Publication number: 20110059061
    Abstract: Bioabsorbable macromer compositions are provided including a diisocyanate-functional bioabsorbable polymer. In some embodiments, the diisocyanate-functional bioabsorbable polymer can be combined with a functionalized polyol. The resulting bioabsorbable macromer composition can be employed as an adhesive or sealant for medical/surgical uses.
    Type: Application
    Filed: November 17, 2010
    Publication date: March 10, 2011
    Applicant: Tyco Healthcare Group LP
    Inventors: Ahmad R. Hadba, Nadya Belcheva
  • Patent number: 7901705
    Abstract: The present disclosure is directed to polymers having hydroxyl containing bioactive agents incorporated into the backbone of the polymer or attached thereto by pendant linkages. Hydroxyl containing bioactive agents which may be attached to these polymers include antimicrobial agents such as triclosan. The polymers may be utilized to form medical devices or coatings for such devices. The hydroxyl containing bioactive agent may be released from the polymer upon hydrolysis of the polymeric backbone or pendant linkage in vivo.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: March 8, 2011
    Assignee: Tyco Healthcare Group LP
    Inventors: Mark Roby, John Kennedy, Joshua B. Stopek, Brian Cuevas, Nadya Belcheva
  • Publication number: 20110015684
    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: May 14, 2010
    Publication date: January 20, 2011
    Inventors: Nadya Belcheva, Joseph Hotter, Russell Heinrich
  • Patent number: 7858078
    Abstract: Bioabsorbable macromer compositions are provided including a diisocyanate-functional bioabsorbable polymer. In some embodiments, the diisocyanate-functional bioabsorbable polymer can be combined with a functionalized polyol. The resulting bioabsorbable macromer composition can be employed as an adhesive or sealant for medical/surgical uses.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: December 28, 2010
    Assignee: Tyco Healthcare Group LP
    Inventors: Ahmad R. Hadba, Nadya Belcheva