| 摘要 |
Lumbar traction apparatus comprising a pair of upper and lower U-shaped supports adapted to be attached to the upper and lower waist portions respectively of a patient undergoing treatment; a belt assembly associated with each of the supports for tightening them to the patient; a pair of laterally spaced apart traction control assemblies extending between the supports, each assembly having a vertically extending tube connected to one of the supports and a toothed rod telescopically mounted for reciprocation in the tube and connected to the other support, and a rotatable shaft carrying a pinion engaged with the teeth on the rod; and a ratchet drive mechanism associated with each traction control assembly for rotating the shaft carrying the pinion in one direction to move the rod relative to the tube thereby moving the supports apart and applying traction to the lower lumbar region of the patient.
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