Patents by Inventor Deger C. Tunc
Deger C. Tunc 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).
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Patent number: 10080661Abstract: An osteoimplant composite comprising a plurality of particles of an inorganic material, a bone substitute material, a bone-derived material, or any combination thereof; and a polymer material with which the particles are combined. The composite is either naturally moldable or flowable, or it can be made moldable or settable. After implantation, the composite may be set to provide mechanical strength to the implant. The inventive composite have the advantage of being able to fill irregularly shape implantation site while at the same time being settable to provide the mechanical strength required for most orthopedic applications. The invention also provides methods of using and preparing the moldable and flowable composites.Type: GrantFiled: May 9, 2016Date of Patent: September 25, 2018Assignee: Warsaw Orthopedic, Inc.Inventors: Deger C. Tunc, John Winterbottom, David R. Kaes, Todd Boyce, David Knaack, James Russell, Subhabrata Bhattacharyya
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Patent number: 9445901Abstract: A device for releasing a therapeutic agent in the body space in the form of a prosthetic joint implant having a first portion such as a stemmed portion for contacting bone tissue in an intramedullary canal of a long bone. The implant has a second portion which extends into the body space such as a joint space. The joint component contains a reservoir filled with a bioabsorbable/resorbable polymer which includes a therapeutic agent. The reservoir is open or in contact with the joint space as the body fluid diffuses in and out of the polymeric device it carries the drug into the joint space.Type: GrantFiled: March 12, 2003Date of Patent: September 20, 2016Inventors: Deger C. Tunc, Chitranjan S. Ranawat, Amar S. Ranawat
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Publication number: 20160250025Abstract: An osteoimplant composite comprising a plurality of particles of an inorganic material, a bone substitute material, a bone-derived material, or any combination thereof; and a polymer material with which the particles are combined. The composite is either naturally moldable or flowable, or it can be made moldable or settable. After implantation, the composite may be set to provide mechanical strength to the implant. The inventive composite have the advantage of being able to fill irregularly shape implantation site while at the same time being settable to provide the mechanical strength required for most orthopedic applications. The invention also provides methods of using and preparing the moldable and flowable composites.Type: ApplicationFiled: May 9, 2016Publication date: September 1, 2016Inventors: Deger C. Tunc, John Winterbottom, David R. Kaes, Todd Boyce, David Knaack, James Russell, Subhabrata Bhattacharyya
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Patent number: 9333080Abstract: An osteoimplant composite comprising a plurality of particles of an inorganic material, a bone substitute material, a bone-derived material, or any combination thereof; and a polymer material with which the particles are combined. The composite is either naturally moldable or flowable, or it can be made moldable or settable. After implantation, the composite may be set to provide mechanical strength to the implant. The inventive composite have the advantage of being able to fill irregularly shape implantation site while at the same time being settable to provide the mechanical strength required for most orthopedic applications. The invention also provides methods of using and preparing the moldable and flowable composites.Type: GrantFiled: August 21, 2013Date of Patent: May 10, 2016Assignee: Warsaw Orthopedic, Inc.Inventors: Deger C. Tunc, John Winterbottom, David R. Kaes, Todd M. Boyce, David Knaack, James Russell, Subhabrata Bhattacharyya
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Patent number: 9107751Abstract: An osteoimplant composite comprising a plurality of particles of an inorganic material, a bone substitute material, a bone-derived material, or any combination thereof; and a polymer material with which the particles are combined. The composite is either naturally moldable or flowable, or it can be made moldable or settable. After implantation, the composite may be set to provide mechanical strength to the implant. The inventive composite have the advantage of being able to fill irregularly shape implantation site while at the same time being settable to provide the mechanical strength required for most orthopedic applications. The invention also provides methods of using and preparing the moldable and flowable composites.Type: GrantFiled: January 19, 2007Date of Patent: August 18, 2015Assignee: Warsaw Orthopedic, Inc.Inventors: John Winterbottom, David R. Kaes, Deger C. Tunc, Todd M. Boyce, David Knaack, James Russell, Subhabrata Bhattacharyya
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Publication number: 20140121781Abstract: An osteoimplant composite comprising a plurality of particles of an inorganic material, a bone substitute material, a bone-derived material, or any combination thereof; and a polymer material with which the particles are combined. The composite is either naturally moldable or flowable, or it can be made moldable or settable. After implantation, the composite may be set to provide mechanical strength to the implant. The inventive composite have the advantage of being able to fill irregularly shape implantation site while at the same time being settable to provide the mechanical strength required for most orthopedic applications. The invention also provides methods of using and preparing the moldable and flowable composites.Type: ApplicationFiled: August 21, 2013Publication date: May 1, 2014Applicant: WARSAW ORTHOPEDIC, INC.Inventors: Deger C. Tunc, John Winterbottom, David R. Kaes, Todd M. Boyce, David Knaack, James Russell, Subhabrata Bhattacharyya
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Patent number: 7468152Abstract: A process for forming a rod of bioabsorbable polymeric material includes extruding the material at a temperature above its melting point at a controlled rate of between 0.4 to 20 feet per minute to form a continuous rod. The continuous rod is then cooled by passing the rod through a cooling bath to cause nucleation. The continuous rod is passed through a first puller running at least at the same speed as the extruder. A second puller is provided which is moving faster than the first puller so that the continuous rod is elongated at a ratio of between 2 and 12 times. During this elongation, the rod is heated to a temperature of between 55° C. and 140° C. in an oven located between the first and second pullers. The rod is annealed at a temperature of between 70° C. and 110° C. after being elongated but prior to exiting the second puller. Upon exiting the second puller, the tension in the rod is released and the continuous rod is then allowed to cool.Type: GrantFiled: March 9, 2004Date of Patent: December 23, 2008Assignee: Howmedica Osteonics Corp.Inventor: Deger C. Tunc
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Publication number: 20040180072Abstract: A device for releasing a therapeutic agent in the body space in the form of a prosthetic joint implant having a first portion such as a stemmed portion for contacting bone tissue in an intramedullary canal of a long bone. The implant has a second portion which extends into the body space such as a joint space. The joint component contains a reservoir filled with a bioabsorbable/resorbable polymer which includes a therapeutic agent. The reservoir is open or in contact with the joint space as the body fluid diffuses in and out of the polymeric device it carries the drug into the joint space.Type: ApplicationFiled: March 12, 2003Publication date: September 16, 2004Applicant: Howmedica Osteonics Corp.Inventors: Deger C. Tunc, Chitranjan S. Ranawat, Amar S. Ranawat, James Ronald Banks
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Publication number: 20040173934Abstract: A process for forming a rod of bioabsorbable polymeric material includes extruding the material at a temperature above its melting point at a controlled rate of between 0.4 to 20 feet per minute to form a continuous rod. The continuous rod is then cooled by passing the rod through a cooling bath to cause nucleation. The continuous rod is passed through a first puller running at least at the same speed as the extruder. A second puller is provided which is moving faster than the first puller so that the continuous rod is elongated at a ratio of between 2 and 12 times. During this elongation, the rod is heated to a temperature of between 55° C. and 140° C. in an oven located between the first and second pullers. The rod is annealed at a temperature of between 70° C. and 110° C. after being elongated but prior to exiting the second puller. Upon exiting the second puller, the tension in the rod is released and the continuous rod is then allowed to cool.Type: ApplicationFiled: March 9, 2004Publication date: September 9, 2004Applicant: Howmedica Osteonics Corp.Inventor: Deger C. Tunc
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Patent number: 6716957Abstract: A bioabsorbable material such as a terpolymer of poly-(L-lactide/D-lactide/glycolide). The material may consist of 85 molar percent L-lactide, 5 molar percent D-lactide, and 10 molar percent glycolide. The material may have a heat of fusion of about 15-25 J/G, tensile strength retention at 26 weeks of incubation of at least about 50%, and tensile strength retention at 52 weeks of incubation of at most about 25%. The material may be used in implantable devices such as bone fixation devices.Type: GrantFiled: January 8, 2001Date of Patent: April 6, 2004Assignee: Stryker Technologies CorporationInventor: Deger C. Tunc
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Publication number: 20020004660Abstract: The present invention is a system for installing bioabsorbable plates for general bone repair, as for example, facial or cranial osteosynthesis. The present invention includes an improved plate and fastener system which reduces if not eliminates stresses within the plate. It also includes an improved fastener container and driver for handling and installing fasteners. The system employs a unique water bath for heating the bioabsorbable plate so they can be deformed to the contours of the bone being repaired. Additionally, there is a hand tool for localized heating and deformation of the plate when positioned against the bone to further ensure conformity with the bone structure. These and other features are contained within a kit which is easily sterilized.Type: ApplicationFiled: February 23, 2001Publication date: January 10, 2002Applicant: Stryker InstrumentsInventors: Bruce D. Henniges, Paul T. Longo, Jon J. Ahola, Douglas L. Tyler, Mark A. Wasserman, Mark T. Salzberger, Deger C. Tunc, Robert F. Landeryou, D. Gregory Diamond, Peter Forst
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Publication number: 20010012940Abstract: A bioabsorbable material such as a terpolymer of poly-(L-lactide/D-lactide/glycolide). The material may consist of 85 molar percent L-lactide, 5 molar percent D-lactide, and 10 molar percent glycolide. The material may have a heat of fusion of about 15-25 J/G, tensile strength retention at 26 weeks of incubation of at least about 50%, and tensile strength retention at 52 weeks of incubation of at most about 25%. The material may be used in implantable devices such as bone fixation devices.Type: ApplicationFiled: January 8, 2001Publication date: August 9, 2001Inventor: Deger C. Tunc
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Patent number: 6231810Abstract: A method for reducing residual ethylene oxide levels in sterilized goods by reacting the residual ethylene oxide with water after the sterilization reaction is completed, thus converting some of the ethylene oxide into ethylene glycol according to the formula (I): The sterilizable material may be subjected to deep vacuum degassing following the reaction of formula (I).Type: GrantFiled: April 21, 1999Date of Patent: May 15, 2001Assignee: Stryker Technologies CorporationInventor: Deger C. Tunc
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Patent number: 6206883Abstract: A bioabsorbable material such as a terpolymer of poly-(L-lactide/D-lactide/glycolide). The material may consist of 85 molar percent L-lactide, 5 molar percent D-lactide, and 10 molar percent glycolide. The material may have a heat of fusion of about 15-25 J/G, tensile strength retention at 26 weeks of incubation of at least about 50%, and tensile strength retention at 52 weeks of incubation of at most about 25%. The material may be used in implantable devices such as bone fixation devices.Type: GrantFiled: March 5, 1999Date of Patent: March 27, 2001Assignee: Stryker Technologies CorporationInventor: Deger C. Tunc
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Patent number: 5827287Abstract: Processes are set forth for forming high strength thermoplastic polymer bone fixation devices used, for example, in orthopedic surgery, where "strength" is quantified in terms of a given device's pullout strength, tensile modulus, shear strength and breaking torque strength. Products of the aforementioned process are contemplated by the invention as well, with both "bioabsorbable" devices, for example, screws which are absorbable in an animal body and do not need to be removed after the bone in which they are inserted has healed; and non-bioabsorbable devices being described.Type: GrantFiled: June 10, 1996Date of Patent: October 27, 1998Assignee: Howmedica Inc.Inventor: Deger C. Tunc
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Patent number: 5824247Abstract: Processes are set forth for forming high strength thermoplastic polymer bone fixation devices used, for example, in orthopedic surgery, where "strength" is quantified in terms a given device's pullout strength, tensile modulus, shear strength and breaking torque strength. Products of the aforementioned process are contemplated by the invention as well, with both "bioabsorbable" devices, for example, screws which are absorbable in an animal body and do not need to be removed after the bone in which they are inserted has healed; and non-bioabsorbable devices being described.Type: GrantFiled: May 12, 1997Date of Patent: October 20, 1998Assignee: Howmedica, Inc.Inventor: Deger C. Tunc
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Patent number: 5201738Abstract: An anti-displacement device and method are disclosed for implantation of a prosthetic bone joint in a bone. A biodegradable biocompatable anti-displacement device comprising a biodegradable biocompatible polymer is directed through an orifice, defined by a cup of a prosthetic bone joint, and into interfering contact with bone tissue of the bone. Displacement of the cup is thereby sufficiently limited to allow bone tissue growth at the cup to fix the prosthetic bone joint to the bone while body fluid at the bone tissue and contacting the elongate member biodegrades the elongate member.Type: GrantFiled: December 10, 1990Date of Patent: April 13, 1993Assignee: Johnson & Johnson Orthopaedics, Inc.Inventors: Richard D. Scott, Deger C. Tunc
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Patent number: 4623539Abstract: Disclosed are method and composition for periodically coating the internal, food absorbing surface of the small intestine of a mammal by ingesting said composition which is capable of forming at least a partial nutrient barrier on said intestine.Type: GrantFiled: March 25, 1985Date of Patent: November 18, 1986Inventor: Deger C. Tunc
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Patent number: 4550449Abstract: An absorbable internal bone fixation device is disclosed. The device is made from a high molecular weight polymer of L(-)lactide having an inherent viscosity above 4.5. The polymer contains less than 2% unreacted monomer and is polymerized under conditions of selected monomer to catalyst ratios and temperature.Type: GrantFiled: November 5, 1984Date of Patent: November 5, 1985Assignee: Johnson & Johnson Products Inc.Inventor: Deger C. Tunc
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Patent number: 4539981Abstract: An absorbable internal bone fixation device is disclosed. The device is made from a high molecular weight polymer of L(-)lactide having an inherent viscosity above 4.5. The polymer contains less than 2% unreacted monomer and is polymerized under conditions of selected monomer to catalyst ratios and temperatures.Type: GrantFiled: November 8, 1982Date of Patent: September 10, 1985Assignee: Johnson & Johnson Products, Inc.Inventor: Deger C. Tunc