The initial fixation strengths of two spiked-washer designs were evaluated using human femurs and fascia lata tissue. Fascia lata was attached to the femur using the fixation devices, and then each femur-washer-fascia lata complex was loaded in tension to failure. Load-elongation curves were recorded, the initial failure load, initial failure displacement, stiffness, ultimate load, and ultimate...

Recently, washer-dryer machines with slanted drums have become popular in Japan. We measured and analyzed posture while using such machines with three-dimensional motion capture measuring devices. Subjective Kansei and usability questionnaires were also used. After the measurements, working postures were analyzed with a human kinematic model (3D SSPP). Three types of machines were used for the ...

BACKGROUND The reprocessing of medical endoscopes is carried out using automatic cleaning and disinfection machines. The documentation and archiving of records of properly conducted reprocessing procedures is the last and increasingly important part of the reprocessing cycle for flexible endoscopes. METHODS This report describes a new computer program designed to monitor and document the auto...

A lllin disc (washer) in a lllrust bearing clearance is conceived as a improvement in llle energy efficiency of llle lllrust bearing. This concept has been applied to reciprocating compressors. However the effect of frictional behavior is not fully understood and llle reliability aspects are in question. This paper addresses the dynamics of llle washer in the clearance considering bolll solid a...

OBJECTIVES Assessment of the immediate results and long-term clinical effects of a thin silicone washer placed behind the tracheal flange of voice prostheses to treat periprosthetic leakage. PATIENTS AND METHODS Three year retrospective analysis of 32 laryngectomized patients with 107 periprosthetic leakage events (PLEs). Custom-made silicone washers (outer diameter 18 mm, inner diameter 7.5 ...

For osteosynthesis and for bone transplant fixation in particular, a lag screw with a biconcave washer, the so called "Anchor Screw" (AS) has been introduced in maxillo-facial surgery. Using 2D-finite element analysis (FEA), the v. Mises and the circumferential stresses induced in underlying bone by this AS are analysed and compared to those under a conventional lag screw. The stress distributi...

Many of us have had the opportunity to observe clothes tumbling in a dryer at a laundromat, and perhaps have reflected how the angular velocity of the drum must be less than √ g/r, where r is the radius of the drum and g is the accelerator due to gravity, if the clothes are to fall free of the drum and make improved contact with the hot air. Another common observation is the vibration of a wash...

Gold screw loosening is a problem that frequently affects dental implants. The application of a preload has been the main means of preventing loosening. However, this measure has not been able to eliminate its occurrence. In this study the effect of a washer in a Brånemark-type implant on the loosening conditions of the retaining screw was investigated using a finite element simulation. The sim...

Many industrial structures associated with railway infrastructures rely on a large number of bolted joint connections to ensure safe and reliable operation of the track and trackside furniture. Significant sums of money are spent annually to repair the damage caused by bolt failures and to maintain the integrity of bolted structures. In the U.K., Network Rail (the organization responsible for r...