By Topic

A device for measuring soft tissue pressure: application to human intervertebral disc and bovine tendon

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Johnson, C.C. ; Dept. of Orthopaedics & Rehabilitation, Vermont Univ., Burlington, VT, USA ; Krag, M.H. ; Pflaster, D.S. ; Haugh, L.D.
more authors

A needle mounted strain gauge pressure sensor has been developed that has proven to be both accurate and reliable. It is a resistive strain gauge mounted on a pressure diaphragm which is exposed to pressure through a silicone window. The transducer is used in a Wheatstone bridge configuration and incorporates a dummy resister for temperature compensation. The transducer cable also contains an excitation voltage limiting circuit for protection of the sensor. The authors used a Measurements Group model 2100 amplifier to provide an excitation voltage of 3 V DC and a gain of 300. Although the sensor's maximum deviation from linearity is over 5%, its curve can be fitted by a quadratic to within 0.4% error. Its use for intradiscal pressure measurements appears to be very satisfactory. Measurement of tendon and ligament tensile force was also good

Published in:

Bioengineering Conference, 1991., Proceedings of the 1991 IEEE Seventeenth Annual Northeast

Date of Conference:

4-5 Apr 1991