A. An injection device kit for the self-administration of an injection of solution that includes a body portion configured for engagement with a cartridge containing the solution and an injection needle where the body portion includes an injection component having an actuation mechanism for inserting the injection needle of the cartridge and for injecting the solution in the cartridge and a safety mechanism on the body portion and configured to prevent injection unless released.

A syringe including a barrel, a plunger moveably arranged within the barrel and a plunger rod for driving the plunger, and an engagement member arranged at the barrel to engage with a grooved surface on the plunger rod. This will create feedback given to a user as the plunger rod is moved relative to the barrel for driving the plunger within the barrel. The barrel and the engagement member are arranged relative to each other such that the engagement member, due to the engagement with the grooved surface of the plunger rod, will move solely in a direction generally perpendicular to a longitudinal direction of the plunger rod as the plunger rod is moved relative to the barrel.

Flush syringe assemblies capable of creating pulsatile movement of the plunger rod as it moves in the distal direction within a syringe barrel, while preventing overpressurization of the cathether are provided. An exemplary flush syringe assembly includes a syringe barrel with a first pulsing element and a chamber with flush solution, a plunger rod with a stopper and a second pulsing element that interacts with the first pulsing element to provide an engagement force that causes pulsatile movement of the plunger rod and a thumb press slidably attached to the plunger rod with a pulse control element. The pulse control element is compressible to create a compression force that is greater than the engagement force of the first pulsing element and the second pulsing element.

Apparatus and methods for providing controlled pressure-flow pulses which purge a catheter system with turbulent flow flushing. Accomplishment of such controlled pressure-flow pulses is provided by a variety of inventive devices including a special plunger rod for a conventional syringe, other interactive parts for conventional syringes, an in-line catheter attachable device which automatically generates the controlled pressure-flow pulses and also single pulse, digitally operated devices.

A syringe exostructure includes a main body which removably receives a syringe having a syringe barrel and a syringe plunger. A drive plunger is reciprocatably mounted on the main body, and a plunger bar is slidably received in an axial channel on the drive plunger. The plunger bar is configured to removably couple to the syringe plunger when the syringe is introduced into the main body. A drive pawl assembly is fixed to an upper surface of the drive plunger and transfers motion of the drive plunger to the plunger bar as the drive plunger is advanced. The locking pawl engages the plunger bar and allows the plunger bar to be advanced by the drive plunger but prevents the plunger bar from being retracted as the drive plunger is retracted.

The present invention relates to a delivery device for delivering predetermined amounts of fluid, comprising a body (10), a container (16) filled with fluid to be delivered arranged inside said body, said container comprising an opening for expelling said fluid and a wall (18) movable inside said container (16), a threaded plunger rod (46) arranged movable inside said body (10) in the longitudinal direction and in contact with said movable wall (18), a manually operated push means (14, 60) movable in the longitudinal direction capable of, upon operation, move said plunger rod (46) towards said movable wall (18), thereby expelling fluid, and means for transforming a generally linear movement of said push means (14, 60) to a rotational movement of said plunger rod (46).

Provided is a metered quantity syringe-type dispenser that is capable of multistage pushing. The metered quantity syringe-type dispenser includes a syringe; a plunger configured to be pushed into the syringe; an elastic deforming portion configured to be deformed in response to the pushing of the plunger; and a stopper portion configured to be locked with respect to the syringe and to be released from the locking by restoring force of the elastic deforming portion.

A syringe includes a barrel having an internal surface defining an internal bore therein, and a plunger disposed within the internal bore of the barrel. A distal end of the plunger is inserted into a proximal end of the barrel. At least one radial projection is disposed on an external surface of the plunger, the at least one radial projection includes a proximal ramp and a distal ramp. The distal ramp includes a first point being a point of incipient contact with the internal surface of the barrel, and the at least one radial projection has a first slope relative to the longitudinal axis at the first point. The at least one radial projection has a second slope at a second point along the proximal ramp. An absolute value of the first slope is different from an absolute value of the second slope.

For a plunger for a syringe, particularly an injection syringe, which comprises a hollow body receiving the plunger, comprising a plunger head for fluid dense limiting a fluid chamber of the syringe, and a piston rod fixed to the plunger head with an actuation section, at which the plunger can be actuated for inserting into the hollow body, wherein the piston rod is formed by several longitudinally extending axial webs that comprise an outwardly radial extension r.sub.K from the longitudinal axis and lead into a common crossing section, which receives the longitudinal axis, wherein at least one free activation edge, which radially protrudes the radial extension r.sub.K, is provided on the piston rod, which when inserting the plunger, is engageable with a vibration activator of the hollow body such that an acoustic signal is emitted, it is intended, that a swinging arm body arranged between two axial webs couples the activation edge with the crossing section such that in case of a vibration activation in an axial direction the swinging arm body comprises a radial swinging arm length r.sub.S between the activation edge and a crossing section of at least 40% of the radial extension r.sub.K.

A multi-dose medicament delivery device is presented having a housing, a medicament container assembly, a dose drum, a plunger rod, and an activation assembly. The dose drum is supported in the housing via a threaded connection, wherein the dose drum is axially movable with respect to the housing in a backward direction from an initial position to at least one dosing position when rotated in a first direction in order to set a dose to be delivered, and axially movable with respect to the housing in a forward direction from said dosing position to the initial position when rotated in a second, opposite direction in order to deliver the dose set. The plunger rod is operationally associated with the stopper and supported in the housing via a threaded connection, wherein the threaded connection is configured to axially guide the plunger rod toward the device front end when the plunger rod is rotated in the second direction.