| 主权项 |
1. An epidural space locating device, comprising:
a) a handle with a proximal end and a distal end; b) a hollow distal chamber attached to the distal end of the handle, the hollow distal chamber being provided with a distal connector wherein a spinal needle is received such that there is a fluid connection between the spinal needle and the distal chamber, the spinal needle being configured to be introduced to a patient's body; c) a pressure loss or drop detection system comprising a plunger running within the distal chamber from a starting position to a final position, and a signaling device connected to the plunger; d) a pivoting button mounted on the handle for securing the plunger in said starting position; e) an annular disc around the plunger for securing the pivoting button on a securing position when a lowering projection, provided on the button, engages the annular disc; and f) elastic means pressing the disc against the lowering projection wherein, when the spinal needle is introduced into the patient's body, the lowering projection withdraws from the annular disc and moves the pivoting button to a released position to release the plunger, and once the spinal needle has reached the epidural space, a pressure loss is produced into the distal chamber, thereby moving the plunger in a distal direction towards said final position, and activating the signaling device to generate a warning signal that the needle has reached the epidural space. |
