Syringe with gravity-assisted valve
US9750662B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2015 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Jan 5, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61J1/2037
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Syringes for providing fluid communications are provided. The syringes include a connector body section having a tip portion and a gravity-assisted valve, and a barrel section. One or more syringes include a configuration of the gravity-assisted valve to allow bidirectional fluid communications between the tip portion and a fluid reservoir when the syringe is pointed downward. One or more syringes include a configuration of the gravity-assisted valve to prohibit fluid communication from the fluid reservoir to the tip portion when the syringe is pointed upward. One or more syringes include a gas pathway extending from an interstitial space of the connector body section to an interior volume of the plunger defining a gas reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.