Tungsten-filled plastic replaces gold as catheter marker

Tungsten-filled plastic replaces gold as catheter marker
Tungsten-filled plastic replaces gold as catheter marker
Tungsten-filled plastic replaces gold as catheter marker

Putnam Plastics Corp. (Dayville, CT), which focuses on advanced extrusion for minimally invasive medical devices, is introducing a line of tungsten-filled polymer marker bands for fluoroscopic illumination of catheter tips. The goal is to reduce costs through elimination of the gold or platinum marker bands typically

used. According to Putnam, the market bands also offer greater adhesion to catheter shaft tips.

The purpose of the short, thin-wall tubes made from gold or platinum placed on the tip of a catheter shaft is to provide radiopacity, or a high level of visibility under fluoroscopy. That’s important because it allows surgeons to precisely locate the catheter features deep within the body for deployment of balloons, stents, and other devices in blood vessels.

A multi-step forming process is required to create seamless small diameter tubes from metals. Specialized manufacturing equipment crimps or swages metal bands to the polymer shaft tip so that they do not fall off during the medical procedure. It’s a costly and time-consuming process. Quality controls to ensure sufficient mechanical bonding between these dissimilar materials can be significant.

Putnam’s new marker bands are made from tungsten-filled polymers, such as nylons, urethanes and thermoplastic elastomers. Tungsten loadings range from 65% to 80% by weight to meet radiopacity requirements. Bands are customized using the same polymer specified for the catheter shaft to allow heat bonding of the band for a more secure assembly. Using proprietary co-extrusion technology, Putnam applies an unfilled polymeric outer surface to these bands similar to the surface of the catheter shaft to ensure minimal trauma to blood vessel walls.

Putnam Plastics offers polymer marker bands with inside diameters ranging from 0.014 inches (0.356mm) to 0.200 inches (5.080mm) and wall thicknesses ranging from 0.002 inches (0.051mm) to 0.030 inches (0.762mm).

“Our thermoplastic composite bands are cut from tubes extruded in a single process, which can provide cost savings and shorten lead times,” said Ray Rilling, general manager at Putnam. “Plus, our bands offer outstanding radiopacity and can be thermally bonded to shafts for greater quality assurance.”

Use of tungsten in plastics dates back several years when efforts accelerated to replace lead for radiation-shielding applications. One of the leaders in the field was compounder LNP of Exton, PA, which is now part of Sabic Innovative Plastics.

Source : http://www.plasticstoday.com/articles/tungsten-filled-plastic-replaces-gold-catheter-marker0622201201


Just desire to say your article is as amazing. The clearness
for your put up is simply nice and that i can think you are knowledgeable in this subject.
Well along with your permission let me to take hold of your feed to keep
updated with approaching post. Thank you one million and please keep
up the rewarding work.

It’s a pity you don’t have a donate button! I’d without a doubt
donate to this outstanding blog! I suppose for now
i’ll settle for book-marking and adding your RSS feed to my Google account.
I look forward to fresh updates and will share this site with
my Facebook group. Chat soon!

I am extremely impressed with your writing skills and also with the layout on your weblog.

Is this a paid theme or did you modify it yourself?
Either way keep up the excellent quality writing,
it is rare to see a nice blog like this one nowadays.

I really like your blog.. very nice colors & theme.
Did you create this website yourself or did you hire someone to do it for you?
Plz reply as I’m looking to create my own blog and
would like to find out where u got this from. kudos

I love what you guys are up too. This kind of clever
work and coverage! Keep up the awesome works guys I’ve incorporated you guys to blogroll.

Hi there terrific website! Does running a blog like this
require a massive amount work? I’ve no understanding of programming but I had been hoping to start my own blog
soon. Anyways, if you have any recommendations or techniques for new blog owners please share.
I understand this is off topic nevertheless I just wanted to
ask. Kudos!

I absolutely love your blog and find most of your
post’s to be exactly I’m looking for. Do you offer guest writers
to write content for you? I wouldn’t mind writing a post or elaborating on a
few of the subjects you write in relation to here.
Again, awesome web log!

Thanks , I have just been searching for info about this topic for ages and yours
is the greatest I’ve came upon till now. But, what about the conclusion?
Are you positive concerning the supply?

Hello, i think that i noticed you visited my site
so i got here to go back the want?.I’m trying to to find issues to improve my site!I guess its
good enough to make use of some of your ideas!!

Hi! This is kind of off topic but I need some guidance from an established blog.

Is it hard to set up your own blog? I’m not very techincal but I can figure things out pretty quick.
I’m thinking about making my own but I’m not sure where to
begin. Do you have any tips or suggestions? Cheers

What i don’t understood is in truth how you are not actually much more neatly-favored than you may be right now.
You are very intelligent. You already know thus
significantly in the case of this matter, produced me
for my part believe it from numerous varied angles.
Its like women and men don’t seem to be fascinated until it is one
thing to do with Lady gaga! Your personal stuffs great.

At all times take care of it up!

excellent issues altogether, you just won a logo new reader.
What may you suggest about your publish that you just made
a few days ago? Any positive?

Thanks for any other great article. The place else may anybody get that type of information in such an ideal manner of writing? I have a presentation subsequent week, and I’m on the search for such information.

Leave a Reply