Traction device and associated lifting mechanisms

摘要

In one embodiment, an ambulatory traction device includes a first support configured to be positioned on a user's body and a second support configured to be positioned on the user's body spaced apart from the first support such that a joint of the user is positioned between the first and second supports. The traction device also includes one or more lifting mechanisms that each couple the supports and apply a decompressive force to the joint when the supports are positioned on the user's body. Each lifting mechanism includes a sleeve having a substantially elliptical, noncircular cross-section and operable to contain a fluid. Each lifting mechanism also includes a piston configured to move within the sleeve in response to an increase in pressure within the sleeve. In other embodiments, the sleeve and piston may have circular or other suitable cross-sections.