Injection device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 13, 2017
Grant Date -
Dec 18, 2008
app pub date -
May 27, 2005
filing date -
May 28, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An injection device (210) is described. A housing (212) receives a syringe and includes a return spring (226) for biasing the syringe from an extended position in which its needle (218) extends from the housing (212) to a retracted position in which the it does not. A drive spring (230) acts on a first drive element (232) and a second drive element (234) acts upon the syringe to advance it from its retracted position to its extended position and discharge its contents through the needle. The first drive element (232) is capable of movement relative to the second (234) once a nominal decoupling position has been reached. A release mechanism is activated when the first drive element (234) is further advanced to a nominal release position, to release the syringe (214) from the action of the drive spring (230), whereupon the return spring (226) restores the syringe (214) to its retracted position. Decoupling of the drive elements is achieved with a particular form of releasable drive coupling using two pairs of overlying flexible arms (235, 247). A particular form of release mechanism that also uses flexible arms (233) is also envisaged.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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