Cilag International Gmbh

Tim Barrow-Williams

Nigel D Harrison

Matthew James Brady

Rosemary Louise Burnell

Rosemary Louise Habeshaw

David M Johnston

Nigel Harrison

David Johnston

Nigel David Harrison

David Maxwell Johnston

Matthew Brady

Maxwell David Johnston

Rosie Habeshaw

An injection device () is described having a housing () and a cap (). The injection device () houses a syringe () having a needle () which is sealed by a boot (). The cap () is arranged so that the boot () can be connected to the cap () simply, but cannot be removed from the cap (). The housing () and cap () are arranged so that upon rotation of the cap (), the cap () is moved axially away from the housing () and the boot () is removed from the syringe (). The injection device is simple to use and manufacture.

Injection device

An injection deviceis described having a housingthat receives a syringe. The syringeis biased by a return springfrom an extended position in which the needleextends from the housingthrough an exit apertureto a retracted position in which it does not. A drive springacts via a drive to advance the syringefrom its retracted position to its extended position and discharge its contents through the needleand a return spring, brought into play when the drive has reached a nominal return position, restores the syringeto its retracted position. A releasable locking mechanism retains the syringein its retracted position. A sleeveprojects from the exit apertureand can be depressed to release the locking mechanism. A triggerhas a rest position, in which it engages the drive, retaining it in a position corresponding to the retracted position of the syringe, and a depressed position, in which it no longer causes the drive to be so retained. The sleevenormally locks the triggerin its rest position. However, depression of the sleeveinto the exit aperture, allows the trigger to be depressed. Thereafter, the triggeris retained in its active position.

An injection device () is described. A housing () receives a syringe and includes a return spring () for biasing the syringe from an extended position in which its needle () extends from the housing () to a retracted position in which the it does not. A drive spring () acts on a first drive element () and a second drive element () 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 () is capable of movement relative to the second () once a nominal decoupling position has been reached. A release mechanism is activated when the first drive element () is further advanced to a nominal release position, to release the syringe () from the action of the drive spring (), whereupon the return spring () restores the syringe () to its retracted position. A locking mechanism () confines the returned syringe in its retracted position.

An injection device () is described. A housing () receives a syringe and includes a return spring () for biasing the syringe from an extended position in which its needle () extends from the housing () to a retracted position in which the it does not. A drive spring () acts on a first drive element () and a second drive element () 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 () is capable of movement relative to the second () once a nominal decoupling position has been reached. A release mechanism is activated when the first drive element () is further advanced to a nominal release position, to release the syringe () from the action of the drive spring (), whereupon the return spring () restores the syringe () to its retracted position. The nominal decoupling and release positions are defined relative to the syringe (). This may be achieved by interaction between a moving component and a decoupling component () that moves with the syringe as it is advanced.

An injection device () is described of the type that receives a syringe, extends it, discharges its contents and then retracts it automatically. The injection device makes use of a fluid-damped delay mechanism.

Growing community of inventors

Melbourn, United Kingdom

Tim Barrow-Williams