EXPANDABLE MEMORY NOTE 4 CRACK

Plastic connectors crack easily and aren’t as durable as those made of metal.īrass won’t corrode and is a much sturdier option overall. Pay attention to the fittings that come with an expandable hose. Most of these hoses expand to about three times their length, to 25, 50, 75, or 100 feet. If you only need to water potted plants on a small deck, a shorter hose will do. Where will you be using your expandable hose? What will you use it for? If you need to water lots of plants in a large garden, opt for a longer hose. Here are the main pros and cons to keep in mind when deciding whether an expandable model is right for your needs.Įxpandable hose features to consider Length

This dual-layer construction is what enables the hose to expand and contract.Įxpandable hoses have a lot of benefits over traditional garden hoses, as well as some drawbacks. These hoses have two layers: the inner layer consists of a tube made of flexible material the outer layer is usually some type of fabric, such as polyester. Expandable hose pros and consĮxpandable hoses stretch and enlarge when water flows through them and shrink when the water is off. Furthermore, for a fixed strut layout, a correlation was found between the strut cross area, as well as metal‐to‐artery ratio and the resultant radial and bending stiffness.Some expandable hoses come with accessories like sprayer nozzles and storage hooks. In general, a large link length allows the stent to be more flexible under bending condition, whereas the mutual links positioning plays a key role in the radial stiffness of these devices. Three distinct behaviors were observed: stents with both low radial and bending stiffness, moderate bending and high radial stiffness, and high bending and moderate radial stiffness. In particular, different strategies are evident regarding the link position. The tested stents showed very different geometrical features and mechanical properties despite similar material and a common open‐cell structure consisting in rings connected by roughly straight links. Geometrical features, such as the link positioning and their length, were examined as a possible determinant of the mechanical properties of the tested stents. Radial stiffness was obtained by measuring the stent resistance to local compression in a V‐shaped support. A four‐point bending test was adopted to measure the bending stiffness. In this study, experimental tests on six carotid open‐cell design self‐expandable stents were carried out to assess bending and radial stiffness. Ideally, a carotid stent should have at the same time low bending stiffness (i.e., high flexibility) to correctly conform to the vessel curvatures in the stenotic region and high stiffness to sustain the vessel wall in the radial direction. The efficacy of cell design is usually investigated on the basis of clinical follow‐ups however, for the specific carotid application the relative importance of the cell design on the stenting outcome is debated. Mechanical properties of carotid stents are important for the selection of the implantable device. Mechanical Properties of Open‐Cell, Self‐Expandable Shape Memory Alloy Carotid Stents Mechanical Properties of Open‐Cell, Self‐Expandable Shape Memory Alloy Carotid StentsĬarnelli, Davide Pennati, Giancarlo Villa, Tomaso Baglioni, Luigi Reimers, Bernhard Migliavacca, Francesco

Expandable memory note 4