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

Volume

1

fYear

2004

fDate

1-5 Sept. 2004

Firstpage

2430

Lastpage

2433

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IEMBS.2004.1403703

Filename

1403703