ASTM F describes the procedure for testing subassemblies and interconnection mechanisms to determine the fatigue strength and. ASTM F Static and Fatigue Properties of Interconnection Mechanisms and Subassemblies Used in Spinal Arthrodesis Implants. Purchase your copy of ASTM F – 13 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available.
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Hence, the test environment, whether a simulated body fluid, saline 9g NaCl per mL H 2 Owith a saline drip, or dry, is an important characteristic of the test and must be reported accurately. The longitudinal component is firmly clamped in the test device and a load max. Remember me for atm month. In this test, the connection stability between the connecting element and the longitudinal element is determined. A force-displacement curve reveals a significant drop in force, which marks the exceeding of the connection strength.
Link to Active This link will always route to the current Active version of the standard. The connecting element serves as a lever arm, so that a moment about the x- or y-axis is generated.
Following the dynamic tests, the axial joint strength is tested under torsion to determine residual stability. The results obtained here cannot be used directly to predict in vivo performance. In this test, the connection stability between the connecting element and the longitudinal element is determined under torsion.
Fatigue testing in a simulated body fluid or saline may have a fretting, corrosive, c1798 lubricating effect on the interconnection and thereby affect the relative performance of tested devices.
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Ultimately, the various components and interconnections should be combined for static and fatigue testing of the spinal implant construct. Referenced Documents purchase separately V1798 documents listed below are referenced within the subject standard but are not provided as part of the standard. The mechanical tests are conducted in vitro using simplified, unidirectional loads and moments.
ASTM F1798 Partial constructions for spinal implants
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One side of the longitudinal element is firmly clamped while the other side remains free.
Spinal implant constructs are designed to provide some stability to the spine while arthrodesis takes place. This standard is also available to be included in Standards Subscriptions.
Wirbelsäulenimplantate – Verbindungs- und Teilkonstrukte ASTM F
It is not the intention of this test method to address the f17798 of spinal f1789 constructs or subconstructs or to define levels of performance of spinal implants as insufficient knowledge is 1f798 to predict the consequences of the use of particular spinal implant designs. However, the results can be used to compare different component designs in terms asym relative mechanical parameters. Proceed to Checkout Continue Shopping. Please first verify your email before subscribing to alerts.
Within the scope of the test, loads and moments are applied in three directions corresponding to a vertebral body: Comparisons must be made cautiously and with careful analysis, taking into account the effects that design differences can have on the loading configurations.
Your Alert Profile lists the documents that will be monitored. Historical Version s – view previous versions of standard. It is not the intention of this guide to address the analysis of spinal implant constructs or subconstructs or to define levels of performance of spinal implants as insufficient knowledge is available to predict the consequences of the use of particular spinal implant designs.
Occipital-cervical and occipital-cervical-thoracic model ASTM F
The force-displacement curves asttm recorded and evaluated with regard to the mechanical properties including stiffness and strength. You may f1789 a document from your Alert Profile at any time.
Enter your account email address to request a password reset: This test method outlines standardized evaluations of different interconnection mechanisms to facilitate comparison between different designs. Static test methods 1. Today, some 12, ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence.