Tri-layer extruded medical tubing and medical devices...

Details Tri-layer extruded medical tubing and medical devices... Tri-layer extruded medical tubing and medical devices...

A - Human Necessities

61

L

A61L 29/00 (2006.01) A61M 25/00 (2006.01) A61M 39/00 (2006.01) B29C 47/06 (2006.01) B32B 1/08 (2006.01) F16L 11/04 (2006.01)

Patent

CA 2235851

The present invention provides a length of trilayer, extruded, medical tubing (10) comprising an outer layer (16), a core layer (12), and an intermediate tie layer (14). The outer layer (16) comprises a polymer that is directly bondable, while the core layer (12) comprises a lubricious polymer. The core layer (12) thus defines a lumen (15) that exhibits the desired characteristics, i.e., low friction for the advancement of a guidewire or catheter through the lumen without comprising the strength and stiffness that is desirable in tubing that is to be used in medical devices. Additionally, the tubing (10) is easily coextruded and yet, is not subject to delamination, thus providing the added advantage of providing a reduction in the overall cost of manufacture.

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