TY - GEN
T1 - Blade oblique cutting of tissue for investigation of biopsy needle insertion
AU - Moore, Jason Zachary
AU - McGill, Carl S.
AU - Shih, Albert J.
AU - McLaughlin, Patrick W.
AU - Zhang, Qinhe
AU - Zheng, Haojun
PY - 2009
Y1 - 2009
N2 - Needle biopsy is a common medical procedure where a needle is guided into the body and used to cut and remove tissue for evaluation. The geometry of needle tip and speed of insertion are important to the efficiency of tissue cutting. This study investigates the mathematical model on the needle tip cutting edge, which is divided into several elementary cutting tools (ECT). The cutting edge is modeled as ECTs with constant inclination angle (λ). A blade oblique cutting machine was developed to test the cutting of bovine liver and phantom gel work-materials by inserting a thin sharp blade at different inclination angles. Experimentations performed reveals phenomena associated with cutting of soft tissue and tissue-like materials. Increased speeds and decreased inclination angles lead to higher cutting forces. This study also reveals that it is challenging to determine the exact location for the inception of blade cutting of soft tissue due to the large workpiece deformation.
AB - Needle biopsy is a common medical procedure where a needle is guided into the body and used to cut and remove tissue for evaluation. The geometry of needle tip and speed of insertion are important to the efficiency of tissue cutting. This study investigates the mathematical model on the needle tip cutting edge, which is divided into several elementary cutting tools (ECT). The cutting edge is modeled as ECTs with constant inclination angle (λ). A blade oblique cutting machine was developed to test the cutting of bovine liver and phantom gel work-materials by inserting a thin sharp blade at different inclination angles. Experimentations performed reveals phenomena associated with cutting of soft tissue and tissue-like materials. Increased speeds and decreased inclination angles lead to higher cutting forces. This study also reveals that it is challenging to determine the exact location for the inception of blade cutting of soft tissue due to the large workpiece deformation.
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M3 - Conference contribution
AN - SCOPUS:70449727242
SN - 0872638626
SN - 9780872638624
T3 - Transactions of the North American Manufacturing Research Institution of SME
SP - 49
EP - 56
BT - Transactions of the North American Manufacturing Research Institution of SME - 37th Annual North American Manufacturing Research Conference, NAMRC 37
T2 - 37th Annual North American Manufacturing Research Conference, NAMRC 37
Y2 - 19 May 2009 through 22 May 2009
ER -