Epidural needle location indicator assembly.

摘要

An epidural needle (10) location indicator device for semi-automatically indicating when an epidural needle (10) has entered into the epidural space in preparation of the delivery of epidural anesthesia. The device can be used with conjunction with a conventional Tuohy needle (10) and takes advantages on the reduction in pressure experienced upon entry into the epidural space causes a visible controlled forward movement of the stilette (20).