Catheter made of a thermoplastic material having improved...

Details Catheter made of a thermoplastic material having improved... Catheter made of a thermoplastic material having improved...

A - Human Necessities

61

M

128/127, 167/335

A61M 25/00 (2006.01) A61L 29/04 (2006.01) A61L 29/14 (2006.01) C08L 43/04 (2006.01)

Patent

CA 1118312

CATHETER MADE OF A THERMOPLASTIC MATERIAL HAVING IMPROVED SOFTNESS AND LOW FRICTION INVENTORS: Lawrence F. Becker Henry M. Gajewski ABSTRACT OF THE DISCLOSURE A catheter, preferably a balloon-type catheter, is disclosed in which the catheter shaft is made of a thermoplastic material and thus may be extrudable, the shaft consisting essentially of (a) from 40 to 70 percent by weight of an elastic composition which comprises: from 50 to 99.5 percent by weight of a block copolymer having thermoplastic rubber characteristics with a central, rubbery polyolefin block and terminal blocks of polystyrene, and optionally including up to about 45 percent by weight of polypropylene, plus from 0.5 to 10 percent by weight of a cross-linked organic silicone elastomer; and (b) from 30 to 60 percent by weight of a hydrophobic oil-type plasticizer to provide the desired degree of softness to said elastic composition.

317892

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