Catheter with non-uniform wall thickness

Details Catheter with non-uniform wall thickness Catheter with non-uniform wall thickness

2011-02-01

2011-02-01

Sirmons, Kevin C (Department: 3767)

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

Reexamination Certificate

active

07879021

ABSTRACT:
A catheter having a non uniform wall thickness comprising first and second wall regions is described. The first region is thicker than the second region and at least a part of the first region comprises a material having a lower stiffness modulus than the second region. Typically, the ratio of stiffness between the first region and the second region is less than 1.25:1 and preferably approximately 1:1. The first region may comprise the same material as the second region but having a different formulation so that the stiffness modulus is altered. Alternatively, the regions may comprise different materials. The lower modulus material is coextruded into at least a part of the broadest/thicker cross sectional region(s).

REFERENCES:
patent: 6855137 (2005-02-01), Bon
patent: 2007/0088322 (2007-04-01), Dicarlo et al.

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