Needle Deflection and Sewability on Sewing Machine. Part 1. Evaluation Method of Needle Deflection.

Modeling of impact damage of sewing machine needle on woven fabric by finite element method

Prediction of needle deflection based on reaction force analysis for needle puncture robot with CT equipment

Abstract: There is a surgical method called Interventional Radiology (IR). This surgical method is conducted with imaging modality such as CT and X-rays. As compared with conventional survey, IR can be conducted in local anesthesia and this surgical method is minimally-invasive to patients. Recently IR is conducted by surgeons using a forceps and a needle. The minimum size of malignancy is appr...

Force-Sensor-Based Estimation of Needle Tip Deflection in Brachytherapy

A virtual sensor is developed for the online estimation of needle tip deflection during permanent interstitial brachytherapy needle insertion. Permanent interstitial brachytherapy is an effective, minimally invasive, and patient friendly cancer treatment procedure. The deflection of the needles used in the procedure, however, undermines the treatment efficiency and, therefore, needs to be minim...

Comparison of Spinal Needle Deflection in a Ballistic Gel Model

BACKGROUND Percutaneous diagnostic and therapeutic procedures are commonly used in the treatment of spinal pain. The success of these procedures depends on the accuracy of needle placement, which is influenced by needle size and shape. OBJECTIVES The purpose of this study is to examine and quantify the deviation of commonly used spinal needles based on needle tip design and gauge, using a bal...

comparison of spinal needle deflection in a ballistic gel model

conclusions there is clinical utility in knowing the relative deflection of various needle tips. when a procedure requires a needle to be steered around obstacles, or along non-collinear targets, the predictable and large amount of deflection obtained through use of a beveled spinal needle may prove beneficial. materials and methods six needles commonly used in spinal procedures (quincke, short...