Non-vented vial access syringe
US9572750B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2015 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Aug 6, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3123
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A syringe includes a plunger having a plunger tube with proximal and distal ends, a center tube with a center passage that extends within the plunger tube, and a balloon disposed over the center tube and sealingly fixed to at least one of the center tube and the plunger tube. The syringe also includes a barrel having a barrel tube having proximal and distal ends and an interior configured to accept a portion of the plunger, a tip fixedly coupled to the proximal end of the barrel tube, a post fixedly attached to the tip and extending within the barrel tube toward the distal end, the tip configured to partially extend into the center passage of the plunger, and a gas passage extending from a proximal end of the tip to the distal end of the post.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.