Braid reinforced medical tubing was invented by Norman C Jeckel in 1942 in Glens Falls, NY for US Catheter Corp. This concept was further developed in 1969 by Robert C. Stevens of Cordis Corporation to include continuous braiding and extrusion processes that utilize a removable core mandrel as a manufacture aid to construct braid reinforced angiographic catheters as shown below. Braided tubing includes a metal or polymer braid reinforcement encapsulated between two thin-wall thermoplastic elastomer layers to improve the kink resistance, torqueability, pushability and burst pressure of a catheter. The core mandrel is used to support and control the ID of the catheter tubing during the over-extrusion and braiding processes.
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