Vented needle for medical liquids
US4058121A · kind A · utility
155Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1976 |
| Grant date | Nov 15, 1977 |
| Priority date | — |
| Expiry date | Jun 29, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61J2200/10
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A thermoplastic needle for injecting sterile liquid into a vial with lateral turbulent motion while air from such vial escapes through a special vent groove on the needle. The needle also has spaced stop wings adjacent a rear portion of the vent groove to prevent overinsertion and occlusion of the vent groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.