Resonant vibrating sensors for tactile tissue differentiation

Surgical resection of brain tumours is a difficult task. To enhance surgery results, a tactile sensor is wanted that gives better resolution and sensitivity than the human tactile sense. The characteristics of resonant vibrating piezoelectric elements change with varying load. This allows for calcul...

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Bibliographic Details
Published in:Journal of sound and vibration 2007-12, Vol.308 (3), p.441-446
Main Authors: Hemsel, T., Stroop, R., Oliva Uribe, D., Wallaschek, J.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
General equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Medical sciences
Physics
Sensors (chemical, optical, electrical, movement, gas, etc.)
remote sensing
Solid mechanics
Structural and continuum mechanics
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
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Summary:Surgical resection of brain tumours is a difficult task. To enhance surgery results, a tactile sensor is wanted that gives better resolution and sensitivity than the human tactile sense. The characteristics of resonant vibrating piezoelectric elements change with varying load. This allows for calculation of mechanical load parameters by measuring electrical quantities. Different setups of piezoelectric sensors have been used to investigate soft materials. Finally, a piezoelectric bimorph sensor gave good results for distinguishing tissue mimicking gel-phantoms with different gelatine concentrations.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2007.03.063