Filtering device for an injection device
US4316462A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 1980 |
| Grant date | Feb 23, 1982 |
| Priority date | — |
| Expiry date | May 21, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3201
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A filtering device for an injection device which includes a syringe and a needle affixed to the syringe. The filtering device comprises an elongated hollow tubular element mounted on the medical injection device to surround and sealingly enclose the needle. The end of a tubular element remote from the tip of the needle is open for the introduction of fluids therethrough into the hollow interior of the tubular element. A nonfiber releasing filtering member for filtering fluids is provided which includes a central filtering portion corresponding in size to the size of the opening of the end of the tubular element and outer peripheral portion surrounding the central filtering portion. A securing sleeve is provided for securing the filtering member to the tubular element at the open end thereof. The sleeve is mounted to the tubular element at the end thereof remote from the syringe, and the sleeve and the tubular element include respective mating surfaces for securing the peripheral portion of the filtering member between the sleeve and of the tubular element. In this manner, only filtered fluids will be drawn into the hollow interior of the tubular element through the open end thereof…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.