Silicon micromachined ultrasonic scalpel for the dissection and coagulation of tissue

Lockhart, R.; Friedrich, F.; Briand, D.; Margairaz, P.; Sandoz, J.-P.; Brossard, J.; Keppner, H.; Olson, W.; Dietz, T.; Tardy, Y.; Meyer, H.; Stadelmann, P.; Robert, C.; Boegli, A.; Farine, P.-A.; de Rooij, N. F.; Burger, J.

doi:10.1007/s10544-015-9981-6

Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-22710

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Silicon micromachined ultrasonic scalpel for the dissection and coagulation of tissue
Authors:	Lockhart, R. Friedrich, F. Briand, D. Margairaz, P. Sandoz, J.-P. Brossard, J. Keppner, H. Olson, W. Dietz, T. Tardy, Y. Meyer, H. Stadelmann, P. Robert, C. Boegli, A. Farine, P.-A. de Rooij, N. F. Burger, J.
et. al:	No
DOI:	10.1007/s10544-015-9981-6 10.21256/zhaw-22710
Published in:	Biomedical Microdevices
Volume(Issue):	17
Issue:	4
Page(s):	77
Issue Date:	2015
Publisher / Ed. Institution:	Springer
ISSN:	1387-2176 1572-8781
Language:	English
Subjects:	Animal; Chicken; Dissection; Electric impedance; Equipment design; Finite element analysis; Hemostasis; Material testing; Reproducibility of results; Silicon; Swine; Transducer; Ultrasonics; Surgical instrument
Subject (DDC):	610.28: Biomedicine, biomedical engineering
Abstract:	This work presents a planar, longitudinal mode ultrasonic scalpel microfabricated from monocrystalline silicon wafers. Silicon was selected as the material for the ultrasonic horn due to its high speed of sound and thermal conductivity as well as its low density compared to commonly used titanium based alloys. Combined with a relatively high Young's modulus, a lighter, more efficient design for the ultrasonic scalpel can be implemented which, due to silicon batch manufacturing, can be fabricated at a lower cost. Transverse displacement of the piezoelectric actuators is coupled into the planar silicon structure and amplified by its horn-like geometry. Using finite element modeling and experimental displacement and velocity data as well as cutting tests, key design parameters have been identified that directly influence the power efficiency and robustness of the device as well as its ease of controllability when driven in resonance. Designs in which the full- and half-wave transverse modes of the transducer are matched or not matched to the natural frequencies of the piezoelectric actuators have been evaluated. The performance of the Si micromachined scalpels has been found to be comparable to existing commercial titanium based ultrasonic scalpels used in surgical operations for efficient dissection of tissue as well as coaptation and coagulation of tissue for hemostasis. Tip displacements (peak-to-peak) of the scalpels in the range of 10-50 μm with velocities ranging from 4 to 11 m/s have been achieved. The frequency of operation is in the range of 50-100 kHz depending on the transverse operating mode and the length of the scalpel. The cutting ability of the micromachined scalpels has been successfully demonstrated on chicken tissue.
Further description:	Erworben im Rahmen der Schweizer Nationallizenzen (http://www.nationallizenzen.ch)
URI:	https://digitalcollection.zhaw.ch/handle/11475/22710
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Organisational Unit:	Institute of Mechatronic Systems (IMS)
Appears in collections:	Publikationen School of Engineering

Files in This Item:

File	Description	Size	Format
2015_Lockhart-etal_Silicon-micromachined-ultrasonic-scalpel.pdf		1.43 MB	Adobe PDF	View/Open

Show full item record

Lockhart, R., Friedrich, F., Briand, D., Margairaz, P., Sandoz, J.-P., Brossard, J., Keppner, H., Olson, W., Dietz, T., Tardy, Y., Meyer, H., Stadelmann, P., Robert, C., Boegli, A., Farine, P.-A., de Rooij, N. F., & Burger, J. (2015). Silicon micromachined ultrasonic scalpel for the dissection and coagulation of tissue. Biomedical Microdevices, 17(4), 77. https://doi.org/10.1007/s10544-015-9981-6

Lockhart, R. et al. (2015) ‘Silicon micromachined ultrasonic scalpel for the dissection and coagulation of tissue’, Biomedical Microdevices, 17(4), p. 77. Available at: https://doi.org/10.1007/s10544-015-9981-6.

R. Lockhart et al., “Silicon micromachined ultrasonic scalpel for the dissection and coagulation of tissue,” Biomedical Microdevices, vol. 17, no. 4, p. 77, 2015, doi: 10.1007/s10544-015-9981-6.

LOCKHART, R., F. FRIEDRICH, D. BRIAND, P. MARGAIRAZ, J.-P. SANDOZ, J. BROSSARD, H. KEPPNER, W. OLSON, T. DIETZ, Y. TARDY, H. MEYER, P. STADELMANN, C. ROBERT, A. BOEGLI, P.-A. FARINE, N. F. DE ROOIJ und J. BURGER, 2015. Silicon micromachined ultrasonic scalpel for the dissection and coagulation of tissue. Biomedical Microdevices. 2015. Bd. 17, Nr. 4, S. 77. DOI 10.1007/s10544-015-9981-6

Lockhart, R., F. Friedrich, D. Briand, P. Margairaz, J.-P. Sandoz, J. Brossard, H. Keppner, et al. 2015. “Silicon Micromachined Ultrasonic Scalpel for the Dissection and Coagulation of Tissue.” Biomedical Microdevices 17 (4): 77. https://doi.org/10.1007/s10544-015-9981-6.

Lockhart, R., et al. “Silicon Micromachined Ultrasonic Scalpel for the Dissection and Coagulation of Tissue.” Biomedical Microdevices, vol. 17, no. 4, 2015, p. 77, https://doi.org/10.1007/s10544-015-9981-6.