Fluorinated material for medical devices such as catheters
OwnerPedro Pedroso, Robert Slazas +1inventors
InventorsPedro Pedroso, Robert Slazas, Lawrence Trainer
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Abstract
A medical device, such as a vascular catheter, is at least partly made from a formulation which comprises a relatively soft polymer, a compatible, relatively stiff polymer, and up to about 15 weight percent of a fluorine-containing polymer, to provide a material which has inherent lubricating characteristics against, for example, a guidewire in a guidewire lumen of the catheter. In one embodiment, the tip of the catheter may be made of such a fluorinated formulation, while the catheter body may be fluorine-free.
Claims24
A catheter for the vascular system of a patient, which comprises:
- a tubular catheter body having a distal end;
- and
- a catheter tip, integrally attached to said distal end of the catheter body, at least a portion of said catheter tip being longitudinally spaced beyond said distal end of the catheter body, said catheter tip being made of a formulation which comprises an organofluorine polymer in sufficient concentration to provide lubricity without the presence of a lubricating surface layer of different formulation;
- said catheter body being made of another formulation which is substantially-fluorine free.
A catheter which comprises:
- a tubular catheter body having a distal end that terminates in a catheter tip, at least one of said catheter body and tip being made of a formulation which comprises:
- (a) From about 45 to 99.9 wt. percent of a relatively soft polymer;
- (b) From about 0 to 30 wt. percent of a polymer that is relatively stiff, compared with ingredient (a) above;
- and
- (c) From about 0.1 to 15 wt. percent of a fluorine-containing polymer.
A medical device which is at least partly made from a formulation which comprises a mixture of:
- (a) From about 45 to 99.9 wt. percent of a relatively soft polymer;
- (b) From about 0 to 30 wt. percent of a polymer that is relatively stiff, compared with ingredient (a) above;
- and
- (c) From about 0.1 to 15 wt. percent of a fluorine-containing polymer.
Dependencies are inferred from the claim text.