Title:
MELT-STABILIZED ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE
Document Type and Number:
WIPO Patent Application WO/2016/153925
Kind Code:
A8
Abstract:
Various embodiments disclosed relate to melt-stabilized ultra high molecular weight polyethylene (UHMWPE), methods of making the same, and medical implants made from the same. In various embodiments, the present invention provides a method of melt- stabilizing UHMWPE. The method can include coating a solid material including UHMWPE with an antioxidant, to provide an antioxidant-coated solid material. The method can include pre-irradiatively heating the antioxidant-coated solid material to diffuse the antioxidant therein, to provide an antioxidant-diffused solid material. The method can include irradiating the antioxidant-diffused solid material, to provide an irradiated solid material. The method can include post-irradiatively heating the irradiated solid material, the heating sufficient to melt at least part of the UHMWPE, to provide a heated material. The method can also include solidifying the heated material, to provide a melt-stabilized material.
Inventors:
PLETCHER DIRK (US)
Application Number:
PCT/US2016/022896
Publication Date:
October 27, 2016
Filing Date:
March 17, 2016
Export Citation:
Assignee:
ZIMMER INC (US)
International Classes:
C08J7/06; A61L27/16; A61L27/50; B29C71/02; C08J3/20; C08J3/28; C08J7/12; C08K5/00; C08K5/1545; C08L23/04
Attorney, Agent or Firm:
ARORA, Suneel et al. (Lundberg & Woessner P.A.P.O. Box 293, Minneapolis MN, US)
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