Portable lumbar vertebra tractor

The utility model discloses a portable lumbar vertebra tractor for medical purpose, which is composed of a pothook, a draw rod, a pressure spring, a bearing, a ratchet wheel, a detent, an end cap, a steel cable, a casing, a bearing base, a ratchet shaft, etc., wherein the casing is in a cylinder shape and has a cavity, the pressure spring is arranged in the cavity, and the draw rod passes through the cavity, extends out from the left cavity and is connected with the pothook; the ratchet shaft is fixed on an upper and a lower planes on the right side of the casing via two bearing bases, the upper end of the ratchet shaft and the ratchet wheel are fixed, a packstop is fixed in a screw hole of the right side plane of the ratchet wheel by a bolt, the steel cable which is fixed on the ratchet shaft on the inner side of the bearing base of the ratchet wheel is connected with the pothook via a radial slot of the end cap of the casing. The utility model has the characteristics of reasonable design, simple structure, small volume, light weight, flexible operation, portability, low cost and no need of special traction bed; the utility model is not only suitable for all levels of hospitals but also is suitable for family ward to use.