Title :
Pressure sensors for in vivo measurements on spinal growth plates
Author :
Sauser, F.E. ; Glos, D. ; Bylski-Austrow, D. ; Papautsky, I.
Author_Institution :
Dept. of Electr. & Comput. Eng., Cincinnati Univ., OH, USA
Abstract :
A new transducer system has been developed for in vivo measurement of pressure on spinal growth plates. A model has been previously proposed for correcting spinal deformities with a staple-like implant, and this sensor will be used in vivo to quantify the pressure that alters growth in this new model of deformity and treatment. The pressure sensor die was 0.65 mm3 and the overall packaged sensor size was 1.5 mm×4 mm×0.9 mm. The completed sensors were fully characterized by hydrostatic and compression tests, and performed linearly. The ruggedness and small package size will allow the sensor to be placed bilaterally in the annulus of porcine spinal intervertebral discs to record pressure for up to two weeks.
Keywords :
biomedical transducers; bone; microsensors; orthotics; pressure measurement; pressure sensors; 0.9 mm; 1.5 mm; 4 mm; compression test; in vivo measurement; porcine spinal intervertebral discs; pressure measurement; pressure sensors; record pressure; spinal growth plates; staple-like implant; transducer system; Deformable models; Implants; In vivo; Microsensors; Nuclear measurements; Orthopedic surgery; Packaging; Piezoresistance; Pressure measurement; Sensor phenomena and characterization; Spinal growth plates; pressure measurements; pressure microsensors; sensor packaging;
Conference_Titel :
Engineering in Medicine and Biology Society, 2004. IEMBS '04. 26th Annual International Conference of the IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8439-3
DOI :
10.1109/IEMBS.2004.1403703
