# Standard Intracranial Stent

**URL:** <https://discourse.shapr3d.com/t/standard-intracranial-stent/3852>\
**Category:** Share your creations\
**Created:** [January 22, 2019, 11:33am UTC](https://discourse.shapr3d.com/t/standard-intracranial-stent/3852 "2019-01-22T11:33:26Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![hamedtopic](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/hamedtopic/32/3371_2.png) [@hamedtopic](https://discourse.shapr3d.com/u/hamedtopic)\
**Post date:** [January 22, 2019, 11:33am UTC](https://discourse.shapr3d.com/t/standard-intracranial-stent/3852/1 "2019-01-22T11:33:26Z")

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Here is a vid of 0.2 inches (5.0 mm) standard intracranial stent composed of 48 nickel-cobalt-chromium wires each of which has 0.0011 inches (27 micrometers), all designed in Shapr3D:

[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/7/7e2e4f5018bf05f94ee9a27bc53555c4b303a521.MOV](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/7/7e2e4f5018bf05f94ee9a27bc53555c4b303a521.MOV)

Also, here is its deformed configuration after deployment in a brain artery suffering from aneurysm, again designed in Shapr3D and the geometry of the artery was imported from FreeCad in STEP after extraction from Slicer3D (3D rotational angiography image processing of the patient) in STL:

[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/1/1c9c130e0bb855807148b1eea64c084c0fbbf4ac.MOV](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/1/1c9c130e0bb855807148b1eea64c084c0fbbf4ac.MOV)

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**Author:** ![tommyn](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tommyn/32/1714_2.png) [@tommyn](https://discourse.shapr3d.com/u/tommyn)\
**Post date:** [January 22, 2019, 4:20pm UTC](https://discourse.shapr3d.com/t/standard-intracranial-stent/3852/2 "2019-01-22T16:20:54Z")

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Hamed,

Interesting! Curious, what is the protrusion Y at top of curve?

Best,

Tommy

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**Author:** ![hamedtopic](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/hamedtopic/32/3371_2.png) [@hamedtopic](https://discourse.shapr3d.com/u/hamedtopic)\
**Post date:** [January 22, 2019, 4:31pm UTC](https://discourse.shapr3d.com/t/standard-intracranial-stent/3852/3 "2019-01-22T16:31:54Z")

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Thanks,

I didn’t find that protrusion please, can you elaborate on this?!

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**Author:** ![tommyn](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tommyn/32/1714_2.png) [@tommyn](https://discourse.shapr3d.com/u/tommyn)\
**Post date:** [January 22, 2019, 4:47pm UTC](https://discourse.shapr3d.com/t/standard-intracranial-stent/3852/4 "2019-01-22T16:47:39Z")

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Please see figure… Curious how cylindrical stent handles this. Is there a hole in it?

![image](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex002/uploads/shapr3d/original/2X/a/a832be177d9132b945e94263775b37ea4eef5c0a.jpeg)

Best,

Tommy

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<div class="post-metadata">

**Author:** ![hamedtopic](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/hamedtopic/32/3371_2.png) [@hamedtopic](https://discourse.shapr3d.com/u/hamedtopic)\
**Post date:** [January 22, 2019, 4:59pm UTC](https://discourse.shapr3d.com/t/standard-intracranial-stent/3852/5 "2019-01-22T16:59:31Z")

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Ah, yes, that’s the aneurysm the patient is suffering from. A balloon-like protrusion over the surface of a brain artery. Actually about the mechanism of action of the stent I should say that, as seen in the vid, it’s a low-porous medium and reduces the volume of blood entering the aneurysm volume and over time, this semi-stagnant blood will become a thrombi and the aneurysm will shrink and disappear. As the wall of the artery is now reinforced with the stent structure, the risk of re-bulging of such an aneurysm (as a result of high blood pressure, genetic disorder, etc) will be low.

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<div class="post-metadata">

**Author:** ![tommyn](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tommyn/32/1714_2.png) [@tommyn](https://discourse.shapr3d.com/u/tommyn)\
**Post date:** [January 22, 2019, 5:23pm UTC](https://discourse.shapr3d.com/t/standard-intracranial-stent/3852/6 "2019-01-22T17:23:49Z")

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Hamed,

Thanks for your explanation. Interesting domain…

Best,

Tommy