Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1976-04-05
1978-06-06
Woodberry, Edward M.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
32 15, 128 92R, 128 92C, 128 92CA, 128 92G, 260 174ST, 260 296WA, 260901, 424 80, 424 78, 424 81, C08L 128
Patent
active
040935760
ABSTRACT:
The doughy bone cement mixture is formed by mixing a powder-form polymer, such as polymethylmethacrylate, with a polymerizing liquid monomer, such as a liquid monomeric methylmethacrylate, to form a water-insoluble composition and admixing this composition with a biologically-compatible high-viscosity aqueous gel to form a dispersion of the composition with the gel. The gel is soluble in water as well as in body fluids so as to dissolve out after implanting of an implant or joint end in a bone. This allows the remaining component of the cement to become porous and, thus, allows for tissue invasion over a course of time to further anchor the implant or joint end. The gel may consist of partially neutralized, carboxymethyl cellulose dissolved in water.
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patent: 3882858 (1975-05-01), Klemm
patent: 3924274 (1975-12-01), Heimke
Chem. Absts., vol. 81: 82347c, "New Improved Bone Cement," Iida et al.
Sulzer Brothers Ltd.
Woodberry Edward M.
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