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AssigneeJohnson & Johnson Professional, Inc.
InventorsJohn V. Hamilton, Mark A. Manasas, Timothy M. Flynn
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Wear resistance and oxidation resistance of bioimplantable polymeric parts is improved by packaging the parts within flexible, gas impermeable containers while subjecting the containers and the parts to a relatively high vacuum force. The containers are heat sealed while subjected to the vacuum force such that, upon sealing, hydrostatic pressure is exerted on the part. Following sealing of the packages, the packages and their contents are irradiated to an extent sufficient to sterilize the parts and to promote crosslinking within the part. Alternatively, the same property enhancements can be imparted to polymeric parts by packaging the part within rigid or flexible containers, minimizing the oxygen content within the containers, pressurizing the containers with an inert gas, or with a mixture of hydrogen and an inert gas, to greater than 1.5 atmospheres, and irradiating the part and the container.
A method for improving the wear resistance of a polymeric manufactured part, comprising the steps of:
A method for improving the wear resistance of a polymeric manufactured part, comprising the steps of:
A method for improving the wear resistance of a polymeric manufactured part, comprising the steps of:
Dependencies are inferred from the claim text.