Dispenser secured against reuse

Details Dispenser secured against reuse Dispenser secured against reuse

1999-10-28

2000-12-05

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604187, A61M 500

Patent

active

061560146

ABSTRACT:
A dispenser for dispersing of a drug comprising a housing (1) forming a cylinder. The cylinder is at one end closed by an end wall (2) having an outlet pipe (3) and the other end is closed by a plunger (4) which is axially displaceable into the cylinder. The outer end of the plunger (4) is secured to the inner side of a cup shaped cap (13, 14) sliding over the outer side of the cylinder. When the plunger (4) is pressed into the cylinder, the upper edge of the housing (1) being provided with outwardly projecting hooks (15) sliding in corresponding grooves (16) in the inner side of the side wall (14) of the cap wall irreversibly engage windows (20) at the bottom (13) of the cap. The cap (13, 14) and the housing (1) is made from differently colored materials.

REFERENCES:
patent: 3943927 (1976-03-01), Norgren
patent: 4091812 (1978-05-01), Helixon
patent: 5984897 (1999-11-01), Petersen et al.

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