Catheter with non-uniform wall thickness
US7879021B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Dec 26, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0054
- WIPO fieldMedical technology
- WIPO sectorInstruments
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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.