BACKGROUND Robotic needle insertion in biological tissues has been known as one the most applicable procedures in sampling, robotic injection and different medical therapies and operations. OBJECTIVE In this paper, we would like to investigate the effects of angular velocity in soft tissue insertion procedure by considering force-displacement diagram. Non-homogenous camel liver can be exploit...

Tension pneumothorax in a large man was inadequately drained by needle thoracocentesis with a 4.5 cm cannula. Unsuccessful needle thoracocentesis of a clinical tension pneumothorax in a large patient should be followed immediately by chest drain insertion, without local anaesthetic, as dictated by clinical urgency. If the clinical situation is still not improved other diagnoses should be consid...

A modification of the needle-tubing combination for the push-pull machine used for aspiration-irrigation of congenital and traumatic cataracts, is described. The new needle-tubing-handle combination is advantageous in that the incorporated handle makes the insertion and maneouvring in the anterior chamber easier and also the whole combination can easily be autoclaved as silastic tubing is used.

The aim of this study was to compare the amount of irrigant extrusion in simulated immature permanent teeth when the apical diameter and needle insertion depth were varied. Thirty single-rooted maxillary incisors with straight root canals were selected. The root length was standardized to a length of 9 mm. The teeth were divided into two experimental groups according to the degree of apical enl...

In contemporary brachytherapy procedure, needle placement at desired location is challenging due to a variety of reasons. We have designed and fabricated an image-guided robot-assisted brachytherapy system to improve the needle placement and seed delivery. In this article we have used two different predictive control strategies in order to investigate the needle insertion efficacy and system dy...

TIPS (Transjugular Intrahepatic Portosystemic Shunt) is an effective treatment for portal hypertension. However, during the procedure, respiration, needle pressure, and possibly other factors cause the liver to move. This complicates the procedure since the portal vein is not visible during needle insertion. We present the results of a study of intraoperative liver motion.

The use of visual illusions to study how the brain gives rise to a representation of the body has produced surprising results, particularly in relation to modulation of pain. It seems likely that this research has relevance to how we understand acupuncture analgesia. Acupuncture supplies several different kinds of signal to the brain: touch in the preliminary examination for tender areas; needl...

Magnetic Resonance Imaging (MRI) has unmatched potential for planning, guiding, monitoring and controlling interventions. MR arthrography (MRA) is the imaging gold standard to assess small ligament and fibrocartilage injury in joints. In contemporary practice, MRA consists of two consecutive sessions: 1) an interventional session where a needle is driven to the joint space and gadolinium contra...

Laparoscopic surgery has become more widespread in the last years. Creating the pneumoperitoneum is the first surgical procedure but it is still responsible for many of the adverse events described in this field. Until now, liver puncture producing a delayed biloma has not been described. We present a case where a biloma was developed after liver puncture by the Veress needle, during a laparosc...

OBJECTIVES To examine the usefulness of an absorbable hemostatic gelatin sponge for hemostasis after transrectal prostate needle biopsy. SUBJECTS AND METHODS The subjects comprised 278 participants who underwent transrectal prostate needle biopsy. They were randomly allocated to the gelatin sponge insertion group (group A: 148 participants) and to the non-insertion group (group B: 130 partici...