Polymer fiber tubular structure having kinking resistance
US7276271B2 · kind B2 · utility
8Cited by
103References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2002 |
| Grant date | Oct 2, 2007 |
| Priority date | — |
| Expiry date | Mar 11, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/614
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for forming a tubular structure from a liquefied polymer, the apparatus comprising: (a) a dispenser for dispensing the liquefied polymer; (b) a precipitation electrode being at a first potential relative to the dispenser, the precipitation electrode being designed and constructed for generating a polymeric shell thereupon; and (c) a mechanism for increasing a local density of the polymeric shell in a plurality of predetermined sub-regions of the polymeric shell, thereby to provide a tubular structure having an alternating density in a longitudinal direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.