IMPROVED AUTOMATIC COMPRESSION-DISTRACTION-TORSION METHOD AND APPARATUS

An orthopaedic system is provided which includes a plurality of support members, a plurality of rods interconnecting the support members (60), a plurality of pins (70) attached to the support members for passing through bone (80) of a patient, and an automatic drive means to control an adjustment me...

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Bibliographische Detailangaben
Hauptverfasser:	JOHN A. PURSLEY, THOMAS J. WAKEFIELD, JORDAN M. HOLLOWAY
Format:	Patent
Sprache:	eng
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DIAGNOSIS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES SURGERY TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	An orthopaedic system is provided which includes a plurality of support members, a plurality of rods interconnecting the support members (60), a plurality of pins (70) attached to the support members for passing through bone (80) of a patient, and an automatic drive means to control an adjustment means (21) of the rods to adjust the length of the rods to alter the relative positions of the support members. The drive means includes at least one motor (11) for incrementally adjusting the adjustment means of at least one of the rods and a controller means (30) for providing pulses to the motor and for storing information regarding the number of stepwise adjustments of the rod length by the motor.