Safety syringe
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 14, 2002
Grant Date -
N/A
app pub date -
Jun 27, 2000
filing date -
Jun 27, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A safety syringe ensuring stable and airtight connection of a hub to a barrel of the syringe is provided. A rear portion of the hub is tightly fitted in a neck portion at a front end of the barrel, such that the hub is prevented from moving out of the barrel via the neck portion. A first airtight contact line is formed at joint of two shoulder portions separately formed on the hub and the neck portion, and a second airtight contact line is formed at a position within a contact surface between the hub and the neck portion, so that the hub is stably and air-tightly connected to the barrel. A plunger is disposed in the barrel to push medical liquid in the barrel into the hub and a cannula fixed to the hub for injection purpose. An engaging cone having a slit is forward projected from a front end of the plunger to engage into receiving holes formed on the hub when the plunger is fully push forward. Any residual medical liquid in the barrel between the plunger and the hub flows backward via the slit to eliminate internal pressure in the barrel and thereby enables smooth injection of medical liquid into a patient's body.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully