Tissue cutting mechanics and applications for needle core biopsy and guidance

Yancheng Wang, Bruce L. Tai, Roland K. Chen, Jason Moore, Carl S. Mcgill, Kai Xu, Patrick W. Mclaughlin, Albert J. Shih

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Needle is one of the most common features in medical devices. A better understanding of needle tip geometry can lead to the creation of an optimized needle tip geometry which would greatly benefit the procedure of biopsy or insertion guidance. This study reviews the recent researches on needle cutting edge with high inclination angle, and applications in needle core biopsy and insertion guidance. The mathematical models of the inclination and rake angles for the needle with lancet point and enhanced cutting edge needles are developed. To improve the biopsy length, a novel approach to use the enhanced cutting edge needle to acquire the tissue sample is studied and the concept is experimentally validated. To reduce needle deflection and increase insertion accuracy, the effects of grid constraints, needle material, and insertion speed are analyzed. The knowledge gained from this study can be used to better understand needle tissue cutting mechanics and integrate these technologies for more efficient needle biopsy and accurate insertion guidance procedures.

Original languageEnglish (US)
Title of host publicationMicro Manufacturing Techniques and Applications
Number of pages10
StatePublished - 2013
Event2nd International Forum on Micro Manufacturing, IFMM 2012 - Guangzhou, China
Duration: Dec 17 2012Dec 18 2012

Publication series

NameApplied Mechanics and Materials
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482


Other2nd International Forum on Micro Manufacturing, IFMM 2012

All Science Journal Classification (ASJC) codes

  • General Engineering


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