Spiral shaped filter
US8226679B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2009 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Mar 9, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/004
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In one embodiment of the present invention there is provided a filter having a first spiral support member having a first end and a second end, a second spiral support member positioned adjacent the first spiral support member to form an open loop between the first end and the second end of the first spiral support member; and a filtering structure attached to the open loop. In another embodiment of the present invention there is provided a filter having a first spiral support member having a first end and a second end; a second spiral support member positioned adjacent the first spiral support member to form a loop between the first end and the second end; a material covering a portion of the first and the second spiral support members; and a structure attached to the loop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.