{"id":3501,"date":"2024-09-10T19:52:48","date_gmt":"2024-09-10T17:52:48","guid":{"rendered":"https:\/\/endolab.org\/?post_type=vi-stents-and-endova&#038;p=3501"},"modified":"2024-09-26T16:32:28","modified_gmt":"2024-09-26T14:32:28","slug":"iso-25539-astm-f2477","status":"publish","type":"vi-stents-and-endova","link":"https:\/\/endolab.org\/de\/vi-stents-and-endova\/iso-25539-astm-f2477\/","title":{"rendered":"ISO\u00a025539 \/ ASTM\u00a0F2477"},"content":{"rendered":"<p><strong>ISO&nbsp;25539\u20101:<\/strong>&nbsp;Cardiovascular implants &#8211; Endovascular devices &#8211; Part 1: Endovascular prostheses<br><br><strong>ISO&nbsp;25539\u20102:<\/strong>&nbsp;Cardiovascular implants &#8211; Endovascular devices &#8211; Part 2: Vascular stents<br><br><strong>ISO&nbsp;7198:<\/strong>&nbsp;Cardiovascular implants and extracorporeal systems \u2014 Vascular prostheses \u2014 Tubular vascular grafts and vascular patches<br><br><strong>ASTM&nbsp;F2477:<\/strong>&nbsp;Standard Test Methods for in vitro Pulsatile Durability Testing of Vascular Stents.<br><br>The fatigue life of vascular prostheses, such as coronary and peripheral stents and bifurcated devices, are verified under simulated physiological loading conditions.<br><br>Our test setup consists of an array of mock vessels pulsated by electro-dynamic motors. This simulates physiological loading conditions on the implanted stents.<br><br>The decrease and increase of silicone vessel diameter define the loading and unloading of the stent. This value is used for digital closed-loop control of the test system and allows for high precision control even when testing extremely small or large (peripheral) vascular implants. A contactless diameter scanning system continuously scans the actual outer diameter of the mock vessel. The corresponding change in the inner diameter is evaluated by analytical means.<br><br>According to ASTM&nbsp;F2477, the typical duration of this test is 10 years of equivalent use (at 72 beats per minute) or at least 380 million cycles. Most fatigue tests operate at frequencies between 20 and 60 Hz. Customized solutions are possible by request. &nbsp;<\/p>","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":true,"_uag_custom_page_level_css":""},"class_list":["post-3501","vi-stents-and-endova","type-vi-stents-and-endova","status-publish","hentry"],"acf":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"Theresa Kaddick","author_link":"https:\/\/endolab.org\/de\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"ISO&nbsp;25539\u20101:&nbsp;Cardiovascular implants &#8211; Endovascular devices &#8211; Part 1: Endovascular prostheses ISO&nbsp;25539\u20102:&nbsp;Cardiovascular implants &#8211; Endovascular devices &#8211; Part 2: Vascular stents ISO&nbsp;7198:&nbsp;Cardiovascular implants and extracorporeal systems \u2014 Vascular prostheses \u2014 Tubular vascular grafts and vascular patches ASTM&nbsp;F2477:&nbsp;Standard Test Methods for in vitro Pulsatile Durability Testing of Vascular Stents. The fatigue life of vascular prostheses, such as&hellip;","_links":{"self":[{"href":"https:\/\/endolab.org\/de\/wp-json\/wp\/v2\/vi-stents-and-endova\/3501","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/endolab.org\/de\/wp-json\/wp\/v2\/vi-stents-and-endova"}],"about":[{"href":"https:\/\/endolab.org\/de\/wp-json\/wp\/v2\/types\/vi-stents-and-endova"}],"wp:attachment":[{"href":"https:\/\/endolab.org\/de\/wp-json\/wp\/v2\/media?parent=3501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}