Patent · US Expired

Pressure hypodermic injector for intermittent vaccination

US4266541A · kind A · utility

44Cited by
4References
5Claims
0Family size

Assignee

Inventor

Key dates

Filing dateSep 17, 1979
Grant dateMay 12, 1981
Priority date
Expiry dateSep 17, 1999

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61M5/204
  • WIPO fieldMedical technology
  • WIPO sectorInstruments

Abstract

A pressure liquid injector, for purposes of immunization includes one part in the shape of a pistol which houses the oil-hydraulic assembly for storage of energy and another part which comprises the vaccine suction and injection assembly. These two assemblies may be quickly connected and disconnected one from the other without permitting entrance of air into either of the two systems, particularly into the ducts and places where the vaccine is circulated and stored. Thus, a number of vaccine assemblies can be kept in a refrigerator and used one at a time in conjunction with the same hydraulic assembly, according to the need for application.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.