Dispenser for dispersing sterile solutions
US5238153A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1991 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Feb 19, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61J1/145
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dispenser for dispensing sterile solution which includes a valve to control the dispensing of the sterile solution from a container. The valve comprises a solution outlet and an air inlet opening having an associated filter membrane to filter the air passing into the container. When dispensing the solution, force applied to the container causes the solution outlet to open and prevents access of the solution to the air inlet opening. When the force is relieved, a partial vacuum is formed in the container which causes the solution outlet to close. Air is then drawn into the container via the air inlet opening and through the filter membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.