BACKGROUND In regional anaesthesia, there is a risk of direct nerve injury. The purpose of this study was to determine whether the diameter of the applied needle is associated with the magnitude of nerve injury after needle nerve perforation. METHODS In five anaesthetized pigs, the brachial plexus were exposed bilaterally. Up to eight nerves underwent needle nerve perforation using a 24 G pen...

To compensate for the insufficiency and instability of solder paste dispensing and printing that are used in the SMT (Surface Mount Technology) production process, a noncontact solder paste jetting system driven by a piezoelectric stack based on the principle of the nozzle-needle-system is introduced in this paper, in which a miniscule gap exists between the nozzle and needle during the jetting...

In Canada and in many other countries, prisons have become incubators for the transmission of HIV and hepatitis C virus (HCV). Estimates of HIV and HCV prevalence in Canadian prisons are at least 10 and 20 times, respectively, the reported prevalence in the population as a whole--and prevalence rates have been reported to be significantly higher for people who inject drugs. Although people who ...

Im ages Seromas and hematomas are relatively common complications of a variety of surgical procedures. In plastic surgery, they may occur in the postoperative period of abdominoplasty or abdominal wall reconstruction, mastectomy or breast reconstruction, lymphadenectomy, or voluminous neoplasm excision. Furthermore, in our experience, seromas are particularly common in surgical procedures invol...

A micro-advancer device that positions a narrow-gauge needle within the vitreous humor of the rat eye is described. The device is compact, simple and inexpensive to manufacture. It consists of an outer guard needle and an inner injection needle that is advanced through the guard needle. With the rat held in a stereotaxic holder and the globe fixed to a stabilizing ring, the outer 25-gauge guard...

We required a disposable dialysis chamber of approximately 100 μL internal volume to fit within a small reaction vial. Since our application demanded the highest possible rate of diffusion into and out of the chamber, the surface area-to-volume ratio had to be as high as was practical. Injectable dialysis chambers are commercially available, e.g., the Slide-A-Lyzer® Cassette (Pierce, Rockford,...

Background: Fine needle aspiration cytology is a diagnostic tool in which cells are extracted from palpable swelling using FNAC gun or syringe and needle. It simple, speedy, safe, cost effective accurate technique being used worldwide. But, pitfalls come along making the correlation with histopathology often necessary. Materials Methods: This study was prospective conducted among 30 patients un...

With the use of cell replacement therapies as a realistic prospect for conditions such as Parkinson's and Huntington's diseases, the logistics of the delivery of cell suspensions to deep brain targets is a topic for consideration. Because of the large cannulae required for such procedures, we need to consider the behavior of cell suspensions within the cannulae if we are to ensure that the inje...