Producing precision catheter tips, demands specialized technical expertise and commences with premium-quality extrusions, meticulous design for manufacturability and precision tooling.
Modern extrusion technology plays a key role in the success of the design and production superior catheter tips. Join Steve Maxson, Innovation and Business Development Manager of US Extruders to gain comprehensive knowledge about extrusion design inputs and tolerance levels to enhance your product development process.
Watch this presentation to learn:
Join Steve Maxson, Innovation and Business Development Manager of US Extruders to gain comprehensive knowledge about extrusion design inputs and tolerance levels to enhance your product development process. Understand the dynamics of dimension changes post-extrusion and the implications on product performance. Equip yourself with insights into the impact of sterilization methods on post-extruded tubing.
You’ll Learn:
Typically you'd see 85%concentricity. But for balloon tubing, more stringent technical extrusion, you'd typically see greater than 90%concentricity.
CPK, I look at that as short term. It might be just a subgroup of data that you're looking at, where PPK is long term, where you include all the subgroups, a little bit more comprehensive. So CPK would typically be a little higher than PPK
This is something that's debated often within the medical extrusion world and everybody has their own opinions and I'll give you mine You know it if you have a particular part an extrusion that has to meet a really stringent requirement Tolerance requirement that would be possibly a good Opportunity to use a melt pump but a lot of the contract manufacturers, you know They're there they might run for an hour stop clean out run for another hour hour and a half just all day churning out extrusion runs and having a melt pump in that environment is not conducive to quick turn extrusion because of the clean out required. So if you can get away without using a melt pump, which most people do, I would avoid it and use pressure control. But if it's a really stringent requirement for a tough material, then that's a good opportunity for a melt pump.
Tipping can be a complicated process. Listen to our Vante team present on Design for Manufacturing, geometry design and how to optimize processes for better efficiency and quality outcomes.
Watch this segment to learn about:
The step mandrels design lets the narrower shank of the mandrel to placed through the cavity to be gripped on the left side of the cavity, the larger diameter has a sharp flat ledge that creates a shut off surface on the bottom of the cavity, this is then pull from the left side to apply force to the shutoff surface, preventing material from passing that point.
It varies between different polymers, some are more forgiving then others, but in general, +/- .002” (0.05mm) is ok, overall the tighter the tolerance the better the end result.
It largely depends on the polymer in question, where the vent hole can be placed and what type of tooling is in use, on a split tool, vents can be machined on the flat surfaces and can be a small as .001”.But in generally, cavities are completed diameter shapes and require vent holes to be drilled or EDM. There are some limitations on sizes so in these cases the minimum vent hole size would be approx. .004-6”.
Advancing Medical Device Manufacturing through Synergistic Solutions for Exceptional Results.
2951 W. Shamrell Blvd. Suite 107
Flagstaff, AZ 86005 USA
.jpg)