Method and apparatus for cathodic potential control in electrically induced osteogenesis
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United States of America Patent
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May 28, 1985
Grant Date -
N/A
app pub date -
Mar 7, 1983
filing date -
Mar 7, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is a method and apparatus for maintaining the potential between a cathode and a reference electrode substantially constant during electrically-induced osteogenesis. Two separate embodiments of electronic circuits are provided which will generate a D.C. current to flow between a cathode and anode while maintaining the potential between the cathode and the reference electrode substantially constant within the range of 0.1 to 1.26 Volts and preferably within the range of 1.0 to 1.26 Volts. Improvement in the amount of new bone grown over prior art bone growth stimulators is on the order of 200 to 300 percent. The electronic circuits provide the substantially constant cathodic potential over a wide range of load impedances between the anode and cathode. The disclosure is applicable not only to improving osteogenesis in bone fracture sites, but also to applications in which it is desirable to provide bone accretion for any reason.
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