BACKGROUND To report the clinical experience and success rate with Ritleng intubation system in patients with congenital nasolacrimal duct obstruction. METHODS Twenty-four patients (32 eyes) with congenital nasolacrimal duct obstruction treated with the Ritleng intubation system were enrolled in this study. The mean age was 20.1+/-9.6 months. The technique involved introduction of a Prolene m...

A direct cardiac compression (DCC) device is an active sleeve that is surgically placed around the heart to help the failing heart to pump without contacting blood. Soft robotic techniques enable fabrication of a conformable DCC device containing modular actuators oriented in a biomimetic manner that can restore the natural motion of the heart and provide tunable active assistance. In this pape...

Introduction Since the days of Hippocrates, many modifications have been proposed in endonasal dacrocystorhinostomy (DCR), with the use of new drugs and implants showing variable results. The objective of this study was to analyze whether the use of silicon tubing or mitomycin C administration has an added advantage over conventional endonasal DCR. Materials and Methods A randomized controlle...

3.1 Overview 3.2 Overview of Nodal Analysis 3.3 Selection and Determination of Tubing and Production Casing Sizes for Flowing Wells Importance of Sensitivity Analysis of Tubing Size Sensitivity Analysis and Optimization of Tubing Size of Flowing Well Optimization Method Based on Surface Tubing Pressure Derived by Given Separator Pressure Optimization Method Based on the Given Wellhead Tubing Pr...

Abstract. We describe the model and construction of a two-flow (or divided-flow) humidity generator, developed at LNE-Cnam, that uses mass flow controllers to mix stream dry gas with humid saturated 28 ∘C. It can generate wide range humidity, mole fractions in 0.7×10-6<x<9000×10-6, without using low temperature or high pressure. This is suitable for calibrating balloon-borne instruments m...

Plasticized polyvinyl chloride tubing is used as the blood conduit in the heart lung bypass circuit. The section in the roller pump undergoes rigorous compression. Fatigue leads to material changes in weight and length of the bulk material. Particles are released during normal pump operation. This study evaluates the time course of particle loss. Three segments of 1/2" ID tubing run in the race...

BACKGROUND Peripheral nerve repair is often complicated by fibroblastic scar formation, nerve dysfunction, and traumatic neuroma formation. Use of silicone may improve outcomes of these repairs. In this study, we tried to evaluate effectiveness of silicone gel on rats’ sciatic nerve repair, axon regeneration and scar formation around and in the nervous tissues. METHODS This experimental stud...