Limb for breathing circuit

摘要

A limb for a breathing circuit manufactured from very thin walled polymer materials (40,44) has an elongate axial reinforcing spine (24) lying freely inside the conduit (25) and fixed to each end connector (23,49). The spine (24) is laterally compliant but axially stiff. The spine (24) provides resistance to tensile and compressive loads on the conduit (25), including that induced by prevailing internal pressures.