Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Barry Knight0
Ramesh Sesha0
Stephen Knowles0
Venkitraman R Srinivas0
Date of Patent
August 10, 2010
0Patent Application Number
113208090
Date Filed
December 30, 2005
0Patent Citations Received
0
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Patent Primary Examiner
Patent abstract
The present invention provides a delivery device comprising a fluid cartridge holder, housing and a piston drive mechanism that comprises a hollow piston rod and a drive-shaft. The hollow piston rod has an internal thread that mates with the external thread of the drive-shaft, forming a thread connection and being axially restrained in the proximal direction relative to the housing. The drive mechanism is in turn connected to the housing via a one way ratchet such that the piston rod is prevented from moving in the proximal direction.
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