Adam Spence, a manufacturer of reinforced catheter shafts for vascular technologies based in Wall Township, NJ, and Microspec Corp. (Peterborough, NH), which specializes in tight-tolerance medical tubing, are teaming up to build a better catheter. The partnership will enable Adam Spence to offer medical device OEMs reinforced catheter shafts using Microspec’s proprietary multi-durometer extrusions.
The most common method of constructing a catheter shaft with four different discrete-length sections of varying durometers, for example, involves laminating the four tubing sections together over the braided shaft in a re-flow process, explains Adam Spence, part of the Spectrum Plastics Group. For instance, 35D and 40D soft Pebax tubing is used for the distal segment and stiffer 55D and 72D stiffer Pebax tubing forms the proximal segment.
“Microspec’s inline multi-durometer extrusion technology allows two alternating durometer sections to be joined continuously during the extrusion process, ensuring gradual transition from one durometer to another,” said Timothy Steele, founder and CEO of Microspec. “The length of each section can be programed into the extrusion process per product specification.”
The combined distal and proximal sections are then laminated together, reducing the number of bond joints from three to one. “This process will increase productivity, reduce overall costs and improve the mechanical integrity of the catheter shaft,” said William Li, Senior Catheter Engineer at Adam Spence.
Want to know more? Chat with the folks at Microspec during the co-located PLASTEC and MD&M Minneapolis event on Oct. 31 and Nov. 1 at the Minneapolis Convention Center. Microspec will be exhibiting at booth 1915.