Bioabsorbable glass fibers for use in the reinforcement of bioabsorbable polymers for bone fixation devices and artificial ligaments
AssigneeUniversity of Dayton
InventorsGeorge A. Graves, Jr., Binod Kumar
Life of this patent
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Abstract
A spun or drawn glass fiber for use in the area of medical implants, and particularly as a reinforcement for bioabsorbable polymeric orthopaedic and dental implants. The glass fiber is bioabsorbable and has sufficient tensile strength and elasticity to be used as a reinforcement. It is made up of 5-50% calcium oxide (CaO), 50-95% phosphorous pentoxide (P.sub.2 O.sub.5), 0-5% calcium fluoride (CaF.sub.2), 0-5% water (H.sub.2 O), and 0-10% XO wherein X is either a single magnesium, zinc or strontium ion or two sodium, potassium, lithium, or aluminum ions and when X is aluminum the O represents three oxygen ions.
Claims15
A spun or drawn glass fiber, which is bioabsorbable and useful in the area of medical implants, comprising calcium oxide (CaO) and phosphrous pentoxide (P.sub.2 O.sub.5).
A reinforcement for a bioabsorbable polymeric orthopaedic or dental implant comprising a drawn or spun glass fiber made up of by weight of:
- ______________________________________ CaO 5-50% P.sub.2 O.sub.5 50-95% CaF.sub.2 0-5% H.sub.2 O 0-5% XO 0-10% ______________________________________
- wherein X is selected from the group consisting of a single magnesium, zinc or strontium ion and two sodium, potassium, lithium or aluminum ions, and when X is aluminum O is three oxygen ions.
Dependencies are inferred from the claim text.