Patent · US Expired

Self-venting, non-coring needle assembly

US4537593A · kind A · utility

113Cited by
9References
20Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJun 6, 1983
Grant dateAug 27, 1985
Priority date—
Expiry dateJun 6, 2003

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61M2205/195
  • WIPO fieldMedical technology
  • WIPO sectorInstruments

Abstract

A self-venting, non-coring needle assembly for the transfer of liquid to or from a container includes a hub having a forward end, a rearward end for engaging fluid transfer apparatus and a passageway therethrough. A hollow shaft extends outwardly from the forward end of the hub and has a lumen in fluid communication with the passageway. The shaft includes a closed distal end and an aperture in the side thereof near the distal end and in fluid communication with the lumen. A sleeve is slidably maintained on the shaft. During use, gases are vented by passing freely between the outside of the shaft and the inside dimension of the sleeve.

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