Collapsible filter for introduction in a blood vessel of a patient
US5133733A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1990 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Oct 31, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2230/008
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a collapsible filter for introduction into a blood vessel of a patient and of the kind comprising a number of legs (1-4) diverging from an apical hub (5) and each having a reversely turned hook (1b-4b) at its distal end with respect to said hub (5), each leg comprises a central element (1a-4a), bent into a smooth quasi-half sinusoidal form, and two substantially symmetrical curved side elements (1c-4c, 1d-4d) extending on either side of the central element (1a-4a). The filter may as whole may be unfolded from a collapsed insertion condition in which the central and side elements of all legs (1-4) forms a narrow bundle for arrangement in a catheter like insertion instrument into a tulip like filter configuration with the side elements (1c-4c, 1d-4d) interposed between the central elements (1a-4a) of the legs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.