Wockhardt Limited

Barry Knight

Stephen Knowles

Ramesh Sesha

Umesh Joshi

Ashok Tyagi

Matthew Stephenson

Venkitraman R Srinivas

The fluid delivery pen of the present invention has a reduced dose setting friction mechanism which may produce a sound of higher audibility for each click corresponding to one unit dose set using a dose setting mechanism and also produces a sound of lower audibility than the former for each click when the set dose is reduced using the dose setting mechanism. The fluid delivery pen driving mechanism of the present invention has an indication to an end of dose of fluid in a cartridge.

Fluid delivery pen with final dose stop and improved dose setting features

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.

Pen shaped medication injection devices

Growing community of inventors

Weybridge, Australia

Barry Knight