Veress needle insertion, direct trocar insertion and open technique are different methods of establishing pneumoperitoneum to perform a successful laparoscopic procedure. We conducted this study to compare the use of a Veress needle and direct trocar insertion to create pneumoperitoneum. 274 laparoscopic cholecystectomy operations were evaluated. There were no significant differences in the age...

The amount of pressure exerted on the syringe and the depth of needle insertion are the two key factors for successfully carrying out epidural procedure. The force feedback from the syringe plunger is helpful in judging the loss of pressure, and the depth of the needle insertion is crucial in identifying when the needle is precisely placed in the epidural space. This article presents the develo...

− Medical procedures such as seed implants, biopsies, and treatment injections require inserting a needle tip to a specific target location inside the human body. This is difficult because (1) insertion causes soft tissues to displace and deform, and (2) it is often difficult or impossible to obtain imaging data during insertion. We are developing a sensorless planning system for needle inserti...

One of the most commonly performed minimally invasive surgical procedures is needle insertion. Such needle insertions are often performed either for diagnosis (e.g., biopsies) or therapy (e.g., brachytherapy), both of which require accurate needle placement. These procedures are frequently performed under ultrasound image-guidance which provides visual feedback. Clinicians usually use rigid bev...

Models that predict soft tissue deformation during needle insertion could improve the accuracy of needle based medical procedures. In an effort to establish a method for defining and validating such models, we present an experimental setup including hardware and software for recording and measuring the time-dependent, 3D deformation that occurs as a needle is inserted into soft material. Algori...

This short review updates an exhaustive one written by Correa et al. in 2019 about haptic training simulation on needle insertion the medical field. Latest works refine well-known models and enhance setups methods to facilitate generically getting experimental data. We provide a complementary focus device specifications recent render this specific feedback computer-based simulators. Assessment ...

Precise needle placement is required for the success of a wide variety of percutaneous interventions in medicine. Insertions into soft tissues can be difficult to learn and to perform, due to tissue deformation, needle deflection and limited visual feedback. Little quantitative information is known about the interaction between needles and soft tissues during puncture, and no effective physical...

BACKGROUND AND PURPOSE Although ultrasonography-guided percutaneous nephrostomy is relatively safe, a number of factors make it challenging for inexperienced operators. A computerized needle navigation technique using tracked ultrasonography snapshots was investigated to determine whether performance of percutaneous nephrostomy by inexperienced users could be improved. METHODS Ten operators p...

OBJECTIVE To find the optimal needle insertion site for needle electromyography of the pronator teres (PT) muscle among commonly used sites. METHODS Fifty forearms of 25 healthy subjects were evaluated. Four expected needle insertion points were designated as follows. Point 0 was positioned at the midpoint between the medial epicondyle and medial border of biceps tendon in the elbow crease. P...