Stent - metal mesh cylinder design
Stent - metal mesh cylinder design
(OP)
Hey Guys,
I have read a few posts on here before and this is my first time posting. I am not that familiar with solidworks so I hope there is a simple answer.
What is the best way to design a stent in solidworks? I have attached a picture of one but you can find several just by googling "nitinol stent" or "metal stent".
I am struggling and I am hoping you guys can give me some good tips. Thanks
Tim
I have read a few posts on here before and this is my first time posting. I am not that familiar with solidworks so I hope there is a simple answer.
What is the best way to design a stent in solidworks? I have attached a picture of one but you can find several just by googling "nitinol stent" or "metal stent".
I am struggling and I am hoping you guys can give me some good tips. Thanks
Tim






RE: Stent - metal mesh cylinder design
RE: Stent - metal mesh cylinder design
RE: Stent - metal mesh cylinder design
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RE: Stent - metal mesh cylinder design
I need to design it and then apply the load from the FEA to see if my design can handle the necessary load...
I found another forum where somebody was trying to expand the stent: http://www
I just want to test the stent in the expanded state.
I also found someone using CATIA with the same question:
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RE: Stent - metal mesh cylinder design
RE: Stent - metal mesh cylinder design
RE: Stent - metal mesh cylinder design
RE: Stent - metal mesh cylinder design
-Sketched a single repeating unit of the stent and performed a circular sweep to make a 3d part.
-Used a table pattern to plot where all the repeating units were in relation to each other to give me effectively a "2D" sheet of repeating units.
-Used the FLEX tool to wrap it into a tube shape.
Hope this helps.
RE: Stent - metal mesh cylinder design
Will you use beams, shells or solids?
How accurately do you need to model the intersections? Roughly what mesh size will you use and is that small enough to represent your details?
What loading will you be performing? You may be able to just model a single "X".
You might want to post this in your favorite FEA program's group.
I hope this helps.
Rob Stupplebeen
RE: Stent - metal mesh cylinder design
Another option I've seen to a certain level of success, minus rebuild time, is to model the stent flat, cut the necessary diamond pattern into it, and bend it using sheet metal. with some tweaking you can get a rolled shell that almost connects and you can account for the gap in FEA by defining contact faces.
Joe Hasik, CSWP/SMTL
SW 09 x64, SP 4.0
Dell T3400
Intel Core2 Quad
Q6700 2.66 GHz
3.93 GB RAM
NVIDIA Quadro FX 4600
RE: Stent - metal mesh cylinder design
RE: Stent - metal mesh cylinder design
To help others with similar problems, what did you end up doing? Can you post your model or a picture of it with the design tree? Thanks.
Rob Stupplebeen
RE: Stent - metal mesh cylinder design
Is it wound like a spring and then welded? Is it expanded metal. Is it sintered?
This method should help to clarify the initial approach to the model. All of these answers are feasible, but remember, what will produce the best model for FEA.
Christopher Zona - Product Designer
Loretto, Ontario
RE: Stent - metal mesh cylinder design
I am not have SolidWorks anymore so I do not have a picture of the design tree handy but I can describe what I did.
I made a cylinder, then I hollowed it out. After that, I made a new plane on the side of the cylinder and I drew a diamond shape. Then I made a cut through one layer of the cylinder. Then I rotated the cut about the center axis and then I translated the cuts throughout the cylinder. Then I did a fillet on all cuts to make it look like the stent was made with fibers.
The material that I used was a bioresorbable polymer and the way they are manufactured is done on a big braiding apparatus. Microfibers are stranded together and the strands are then braided. After the stent is braided, the stent is partially sintered so the outside of each strand is solid and the inside is still like a fiber. This forms a nanocomposite.
RE: Stent - metal mesh cylinder design
Christopher Zona - Product Designer
Loretto, Ontario