Device for the identification of different tissue types –on the example of identifying epidural space
Date Issued
2009
Date
2009
Author(s)
Yang, Chung-Hsuan
Abstract
Epidural anesthesia is a widely accepted procedure. Since accidental dural puncture is the common accident, identifying epidural space during the procedure is the most important thing. Traditional technique, namely loss of resistance, is commonly used to detect the epidural space. However, this technique requires well tactile perception of an experienced anesthetist. Several devices were proposed to improve the technique by supplying additional visual or acoustic signals while the epidural space is arrived. Yet these devices are seldom used due to their complexity. By using a piezo-resistive force sensor placed at the bottom of the epidural syringe, a novel auxiliary device that can generate visual as well as acoustic signals was proposed. The device is small, low cost and mimic to the traditional loss of resistance technique. Furthermore, the force sensor will not direct contact with the subjects and hence greatly reduce the risk of infection.
Subjects
epidural anesthesia
loss of resistance technique
piezo-resistive force sensor
Type
thesis
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