Prefilled, sterilized syringe with a new and improved plug
US6142977A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1997 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Oct 17, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/31513
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A prefilled medicinal syringe includes a cylinder with a proximal end, a distal end and an outlet. The syringe contains a medicine or a diagnostic agent which is ejected therefrom by a plug. The surfaces of the plug which touch the inside wall of the cylinder are preferably made of polytetrafluoroethylene (TEFLON.RTM.). Preferably the material of which the inside wall of the cylinder is made directly touches the TEFLON.RTM. surfaces of the plug. The plug has at least one sealing lip which forms an acute angle with the axis of the syringe and extends in a direction toward the distal end of the syringe. By so configuring the plug, the prefilled syringe may be autoclaved, stored for an extended time, and still function smoothly without leakage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.