We have developed a consecutive sample-injection device for capillary electrophoresis, which comprises one four-way cock, two syringe pumps, and an interface part taking advantage of two three-way Teflon joints. Sample introduction into the capillary is made hydrodynamically by pressure, caused by the flow of the sample solution at the tip of the capillary inlet. We combined the injection devic...

AIM Pain control, which is necessary during most dental procedures, is administered by injecting a local anaesthetic. Because the injection itself can be painful, the procedure via which pain is reduced warrants continued investigation. Only a few studies regarding the reaction of children to dental needle insertion without the use of topical anaesthetics have been reported. This study was cond...

Needle projection was measured from where the needle protruded from the plastic casing to the proximal edge of the needle lumen. Fluid jet velocity through the EAI at 21 C was determined by calculating the [distance moved by the plunger]/[injection time] [plunger cross-sectional area]/[needle lumen area]. Injection time is from start to finish of the plunger movement. n 1⁄4 3. *Mann-Whitney U t...

Single film retrograde umbilical aortography was used successfully in confirming the diagnosis of hypoplastic left heart in three neonates. The method involves injecting Renografin 75% (1.25 cc/kg body weight) into the umbilical artery catheter according to the following sequence. First, the tip of the catheter is positioned at the level of the ductus arteriosus. The infant heart beats are then...

A pulmonary vein angiogram was performed using a pressure injection with the tip of an end and side hole catheter in a near-wedge position; extravasation of contrast material into a bronchus occurred, causing severe bronchoconstriction. It may be possible to avoid this complication by the use of an end hole balloon catheter in the wedge position, slow flow rates of contrast material, and low pr...

ABS TRACT This paper describes a lip filling technique that administers hyaluronic acid using microcannulas. This technique considerably reduces the number of punctures compared to the conventional method, which uses needles. In addition, the microcannula’s blunt tip reduces the risks of intravascular injection of the substance and of disrupting key structures such as vessels and nerves. The re...

Ultrasound imaging has been used for performing single-injection peripheral nerve blocks and continuous catheters. One limitation with current technology is the inability to confirm the location of the needle or catheter tip. We describe a new needle and catheter design that permits distal tip visualization using color flow Doppler. An 18-gauge 100-mm insulated Tuohy needle and a 20-gauge 50-mm...

In this article, we present the work towards improving the overall workflow of the Percutaneous Coronary Interventions (PCI) procedures by capacitating the imaging instruments to precisely monitor the steps of the procedure. In the long term, such capabilities can be used to optimize the image acquisition to reduce the amount of dose or contrast media employed during the procedure. We present t...

Sporadic duodenal adenomas are rare with an estimated prevalence of 0.31%– 4.6% on upper gastrointestinal endoscopy [1]. Nowadays, endoscopic resection is the recommended treatment for sporadic duodenal adenomas thanks to its low morbidity and mortality when compared with surgical duodenopancreatectomy [2]. The reference technique of endoscopic resection is endoscopic mucosal resection (EMR) wi...

We designed a novel catheter for simultaneous angiography of ipsilateral pulmonary veins (PVs), so that the catheter tip with side holes can be introduced into the inferior PVs and a second curve with side holes into the superior PVs. The simultaneous angiogram of the ipsilateral PVs, using this novel catheter, reveals more clearly the PV ostium to antrum, because simultaneous injection of cont...