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[미국특허] Wear resistant surface-gradient crosslinked polyethylene 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • A61F-002/30
출원번호 US-0680229 (2000-10-06)
발명자 / 주소
  • Harry A. McKellop
  • Fu-Wen Shen
출원인 / 주소
  • Orthopaedic Hospital
  • University of Southern California
대리인 / 주소
    Wean Khing Wong
인용정보 피인용 횟수 : 86  인용 특허 : 32

초록 ▼

A method for improving the wear resistance of an implant, made of polyethylene, by crosslinking its bearing surface layer, while leaving its non-bearing interior uncrosslinked. Such crosslinking may be achieved by electron-beam irradiation or by chemical crosslinking of the implant or the polyethyle

대표청구항

1. An implant comprising a polyethylene, said polyethylene's surface layer being crosslinked, said crosslinking gradually decreasing to nearly zero in the interior of the polyethylene, the crosslinking is achieved by electron beam radiation or chemical means.

이 특허에 인용된 특허 (32) 인용/피인용 타임라인 분석

  1. Salovey Ronald ; McKellop Harry A. ; Shen Fu-Wen, Chemically crosslinked ultrahigh molecular weight polyethylene for artificial human joints.
    상세보기
  2. Armini Anthony J. (Manchester MA) Bunker Stephen N. (Wakefield MA), Coated orthopaedic implant components.
    상세보기
  3. Grant Larry J. (Westerville OH), Conformable insulation assembly.
    상세보기
  4. Grant Larry J. (Westerville OH) Berdan ; II Clarke (Granville OH), Conformable insulation assembly.
    상세보기
  5. Hirai Yoshihiro (Ibaraki-ken JPX) Yamashita Takashi (Nagareyama JPX) Takenaka Masaaki (Kashiwa JPX), Contact charging member, process for producing same and electrophotographic apparatus using same.
    상세보기
  6. Llanos Gerard (Fort Worth TX), Cross-linked polyethylene oxide coatings to improve the biocompatibility of implantable medical devices.
    상세보기
  7. Shen Fu-Wen ; McKellop Harry A. ; Salovey Ronald, Crosslinking of polyethylene for low wear using radiation and thermal treatments.
    상세보기
  8. Itaba Yasushi (Tokyo JPX) Saito Keichiro (Saitama JPX) Tabuchi Jyoichi (Saitama JPX) Yoshizawa Masao (Tokyo JPX), Differentially crosslinked and oriented polyethylene film.
    상세보기
  9. Polmanteer Keith E. (Midland MI), Hydrophilic, water-swellable, crosslinked, copolymer gel and prosthesis employing same.
    상세보기
  10. Pienkowski David A. (Lexington KY), Implant having reduced generation of wear particulates.
    상세보기
  11. Pienkowski David A. ; Lee Kwon-Yong, Implant pre-treated for reducing the generation of wear particulates.
    상세보기
  12. Beaty Keith D., Implant surface preparation.
    상세보기
  13. Sioshansi Piran (Bedford MA) Oliver Richard W. (Acton MA), Ion implantation of plastic orthopaedic implants.
    상세보기
  14. Sioshansi Piran (Bedford MA) Oliver Richard W. (Acton MA), Ion implantation of plastics.
    상세보기
  15. Merrill Edward W. ; Harris William H. ; Venugopalan Premnath ; Jasty Murali ; Bragdon Charles R. ; O'Connor Daniel O., Melt-irradiated ultra high molecular weight polyethylene prosthetic devices.
    상세보기
  16. Fujita Hiroshi (Ibaraki JPX) Sumida Naoto (Osaka JPX), Method for amorphizing a material by means of injection of exotic atoms into a solid with electron beams.
    상세보기
  17. Hamilton John V. (Foxborough MA) Manasas Mark A. (South Easton MA) Flynn Timothy M. (Norton MA), Method for improving wear resistance of polymeric bioimplantable components.
    상세보기
  18. Shetty H. Ravindranath (Warsaw) Ottersberg Walter H. (Warsaw) Parr Jack E. (North Webster) Crowninshield Roy D. (Warsaw IN), Method of surface hardening orthopedic implant devices.
    상세보기
  19. Sun Deh-Chuan ; Stark Casper F., Non oxidizing polymeric medical implant.
    상세보기
  20. Sun Deh-Chuan (Rockaway NJ) Stark Casper F. (Pompton Lakes NJ), Non-oxidizing polymeric medical implant.
    상세보기
  21. Sun Deh-Chuan (Rockaway NJ) Stark Casper F. (Pompton Lakes NJ), Non-oxidizing polymeric medical implant.
    상세보기
  22. Sun Deh-Chuan (Rockaway NJ) Stark Casper F. (Pompton Lakes NJ), Non-oxidizing polymeric medical implant.
    상세보기
  23. Sun Deh-Chuan (Rockaway NJ) Stark Casper F. (Pompton Lakes NJ), Non-oxidizing polymeric medical implant.
    상세보기
  24. Sun Deh-Chuan ; Stark Casper F., Non-oxidizing polymeric medical implant.
    상세보기
  25. Saitoh Keichiro (Iruma JPX) Itaba Yasushi (Higashi-Kurume JPX) Izawa Minoru (Iruma JPX) Yoshino Tadao (Minami-Saitama JPX), Process for producing a crosslinked and oriented polyethylene film.
    상세보기
  26. Buechel Frederick F. (61 First St. South Orange NJ 07079) Pappas Michael J. (61 Gould Pl. Caldwell NJ 07006), Prosthesis with biologically inert wear resistant surface.
    상세보기
  27. Price Howard C. (Wendell NC) Lin Steve T. (Fort Wayne IN) Hawkins Michael E. (Columbia City IN) Parr Jack E. (Arlington TN), Reinforced polyethylene for articular surfaces.
    상세보기
  28. Loh Inh-Houng (Maynard MA), Surface-modified bioabsorbables.
    상세보기
  29. Dearnaley Geoffrey (San Antonio TX) Lankford ; Jr. James (San Antonio TX), Treatments to reduce frictional wear between components made of ultra-high molecular weight polyethylene and metal alloy.
    상세보기
  30. Waggener Herbert A., Wear resistant ball and socket joint.
    상세보기
  31. McKellop Harry Alden ; Shen Fu-Wen, Wear resistant surface-gradient crosslinked polyethylene.
    상세보기
  32. Davidson James A. (2573 Windy Oaks Dr. Germantown TN 38138), Zirconium oxide and nitride coated prosthesis for wear and corrosion resistance.
    상세보기

이 특허를 인용한 특허 (86) 인용/피인용 타임라인 분석

  1. Dees, Jr., Roger Ryan; Crabtree, Jr., Paul Charles; Nielsen, Jonathan Kirk, Anatomical motion hinged prosthesis.
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  2. Schroeder, David W.; Freedman, Jordan H., Antioxidant doping of crosslinked polymers to form non-eluting bearing components.
    상세보기
  3. Schroeder, David W.; Freedman, Jordan H., Antioxidant doping of crosslinked polymers to form non-eluting bearing components.
    상세보기
  4. King, Richard S.; Ernsberger, Craig, Bearing material of medical implant and methods for making it.
    상세보기
  5. Ernsberger, Craig; Liao, Yen-Shuo; Salvati, Lawrence, Bearing material of medical implant having reduced wear rate and method for reducing wear rate.
    상세보기
  6. Buchanan, Fraser James, Bioabsorbable implantable structure.
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  7. Khandkar, Ashok C., Ceramic-ceramic articulation surface implants.
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  8. Khandkar, Ashok C., Ceramic-ceramic articulation surface implants.
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  9. Amery, Drew Powell; Myntti, Matthew F., Cold ionizing radiation sterilization.
    상세보기
  10. King,Richard; McNulty,Donald E.; Smith,Todd S., Composite prosthetic bearing constructed of polyethylene and an ethylene-acrylate copolymer and method for making the same.
    상세보기
  11. King, Richard; McNulty, Donald E.; Smith, Todd S., Composite prosthetic bearing having a crosslinked articulating surface and method for making the same.
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  12. Cheal, Edward J., Crosslinked polyethylene article.
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  13. Schroeder, David W.; Freedman, Jordan H.; Gunter, James E.; Salyer, Brian D.; Hawkins, H. Gene, Crosslinked polymeric material with enhanced strength and process for manufacturing.
    상세보기
  14. Schroeder, David W.; Freedman, Jordan H.; Gunter, James E.; Salyer, Brian D.; Hawkins, H. Gene, Crosslinked polymeric material with enhanced strength and process for manufacturing.
    상세보기
  15. Schroeder,David W.; Freedman,Jordan H.; Gunter,James E.; Salyer,Brian D.; Hawkins,H. Gene, Crosslinked polymeric material with enhanced strength and process for manufacturing.
    상세보기
  16. Shen, Fu-Wen; McKellop, Harry A.; Salovey, Ronald, Crosslinking of polyethylene for low wear using radiation and thermal treatments.
    상세보기
  17. McMinn, Derek James Wallace, Cup with cross-linked polymer layer.
    상세보기
  18. McMinn, Derek James Wallace, Cup with crosslinked polymer layer cable ties.
    상세보기
  19. McMinn, Derek James Wallace, Cup with crosslinked polymer layer modular pegs.
    상세보기
  20. King,Richard, Free radical quench process for irradiated ultrahigh molecular weight polyethylene.
    상세보기
  21. Otto, Jason K.; McKinnon, Brian William; Hughes, Michael Dean; Ries, Michael D.; Victor, Jan; Bellemans, Johan; Garino, Jonathan; Wilton, Timothy, High performance knee prostheses.
    상세보기
  22. Otto, Jason K.; McKinnon, Brian William; Hughes, Michael Dean; Ries, Michael D.; Victor, Jan; Bellemans, Johan; Garino, Jonathan; Wilton, Timothy, High performance knee prostheses.
    상세보기
  23. Lambert, Richard; McLean, Terry; Kelman, David, Hip prostheses.
    상세보기
  24. Lambert, Richard; McLean, Terry; Kelman, David, Hip prostheses.
    상세보기
  25. Ely, K. Scott; Khandkar, Ashok C.; Lakshminarayanan, Ramaswamy; Hofmann, Aaron A., Hip prosthesis with monoblock ceramic acetabular cup.
    상세보기
  26. Myung, David; Kourtis, Lampros; Hartmann, Laura; Frank, Curtis W.; Goodman, Stuart B.; Carter, Dennis R., Hydrogel arthroplasty device.
    상세보기
  27. Myung, David; Kourtis, Lampros; Hartmann, Laura; Frank, Curtis W.; Goodman, Stuart B.; Carter, Dennis R., Hydrogel arthroplasty device.
    상세보기
  28. Wiley, Roy C.; Lozier, Antony J.; Phillips, Mary, Hydrogel proximal interphalangeal implant.
    상세보기
  29. Myung, David; Jaasma, Michael J.; Kourtis, Lampros; Chang, Daniel; Frank, Curtis W., Hydrophobic and hydrophilic interpenetrating polymer networks derived from hydrophobic polymers and methods of preparing the same.
    상세보기
  30. Howald, Ralph; Heuberger, Peter; Hertig, Daniel; Greeve, Job-Jan, Implant.
    상세보기
  31. Howald, Ralph; Heuberger, Peter; Trommsdorff, Ulrike, Implant.
    상세보기
  32. Seebeck, Jörn; Siggelkow, Eik, Implant with differential anchoring.
    상세보기
  33. Lozier, Antony J.; Parrott, Russell M.; Rich, David B., Joint space interpositional prosthetic device with internal bearing surfaces.
    상세보기
  34. Bernero, John P.; Khandkar, Ashok C.; Lakshminarayanan, Ramaswamy; Hofmann, Aaron A., Knee prosthesis with ceramic tibial component.
    상세보기
  35. Pletcher, Dirk, Melt-stabilized ultra high molecular weight polyethylene and method of making the same.
    상세보기
  36. Howald, Ralph; Heuberger, Peter; Hertig, Daniel; Greeve, Job-Jan, Method for implantation of a femoral implant.
    상세보기
  37. Freedman, Jordan H.; Schroeder, David W., Method for making ultra high molecular weight polyethylene.
    상세보기
  38. McMinn, Derek J., Method of forming a polymer component.
    상세보기
  39. Smith, Todd S.; Hanes, Mark D.; King, Richard, Method of making an implantable orthopaedic bearing.
    상세보기
  40. Procida, Inger-Margrete, Method of producing a flexible pipe and a flexible pipe.
    상세보기
  41. Muratoglu, Orhun K.; Spiegelberg, Stephen H., Methods for making oxidation resistant polymeric material.
    상세보기
  42. Muratoglu, Orhun K.; Spiegelberg, Stephen H., Methods for making oxidation resistant polymeric material.
    상세보기
  43. Muratoglu, Orhun K.; Spiegelberg, Stephen H., Methods for making oxidation resistant polymeric material.
    상세보기
  44. Sun, Deh-Chuan; Stark, Casper F., Non-oxidizing polymeric medical implant.
    상세보기
  45. Smith, Todd S.; Hanes, Mark D.; King, Richard, Orthopaedic bearing and method for making the same.
    상세보기
  46. Smith, Todd S.; Hanes, Mark D.; King, Richard, Orthopaedic bearing and method for making the same.
    상세보기
  47. Hanes, Mark D., Orthopaedic bearing material.
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  48. Hodorek, Robert A.; Lozier, Antony J.; Blanchard, Cheryl R., Orthopedic implant with bone interface anchoring.
    상세보기
  49. McKellop, Harry A.; Shen, Fu-Wen, Oxidation-resistant and wear-resistant polyethylenes for human joint replacements and methods for making them.
    상세보기
  50. McKellop, Harry A.; Shen, Fu-Wen, Oxidation-resistant and wear-resistant polyethylenes for human joint replacements and methods for making them.
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  51. McKellop, Harry A.; Shen, Fu-Wen, Oxidation-resistant and wear-resistant polyethylenes for human joint replacements and methods for making them.
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  52. McKellop, Harry A.; Shen, Fu-Wen, Oxidation-resistant and wear-resistant polyethylenes for human joint replacements and methods for making them.
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  53. McKellop, Harry A.; Shen, Fu-Wen, Oxidation-resistant and wear-resistant polyethylenes for human joint replacements and methods for making them.
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  54. King,Richard S.; Hanes,Mark D., Polymer composition comprising cross-linked polyethylene and methods for making the same.
    상세보기
  55. Khandkar, Ashok C.; Hofmann, Aaron A.; Lakshminarayanan, Ramaswamy, Polymer-ceramic articulation.
    상세보기
  56. Myung, David; Kourtis, Lampros; Ward, Robert; Jaasma, Michael J.; McCrea, Keith, Polyurethane-grafted hydrogels.
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  57. Myung, David; Kourtis, Lampros; Ward, Robert; Jaasma, Michael J.; McCrea, Keith, Polyurethane-grafted hydrogels.
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  58. McLean,Terry; Lambert,Richard; Kelman,David, Prostheses.
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  59. Evans,David L.; Hunter,Gordon; Jani,Shilesh C.; Brosnahan, III,Robert E., Prosthetic devices employing oxidized zirconium and other abrasion resistant surfaces contacting surfaces of cross-linked polyethylene.
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  60. Merrill, Edward W.; Harris, William H.; Jasty, Murali; Bragdon, Charles R.; O'Connor, Daniel O.; Venugopalan, Premnath, Radiation and melt treated ultra high molecular weight polyethylene prosthetic devices.
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  61. Merrill, Edward W.; Harris, William H.; Jasty, Murali; Muratoglu, Orhun K.; Bragdon, Charles R.; O'Connor, Daniel O.; Venugopalan, Premnath, Radiation and melt treated ultra high molecular weight polyethylene prosthetic devices.
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