A plunger gasket with reduced surface contact area including a body, a first side defining a first side surface, a second side defining a second side surface, and at least one surface feature projecting outwardly from at least one of the first or second side surfaces. In example embodiments, at least one surface feature projects outwardly from both the first and second side surfaces. By reducing the surface areas of contact between gaskets during manufacture and processing, the incidence of unintentional cohesion may be reduced or eliminated.

An injection device includes one or more of a barrel having an open proximal end, an open distal end, and a sidewall therebetween; a plunger; and a conduit or connector. The barrel may be configured to house a volume of therapeutic agent. The plunger may have a proximal end, a distal end, and an elongate body. The conduit or connector may be operably attached to the open distal end of the barrel. The distal end of the barrel can include a variable inner diameter segment configured such that movement of the plunger to the variable inner diameter segment of the distal end of the barrel creates an audible and/or tactile feedback sensation to a user.

A syringe assembly includes a substantially cylindrical syringe barrel including a fluid dispensing end, an open end, and at least one protrusion adjacent the open end, the at least one protrusion projecting inwardly from an inner surface of the syringe barrel, a stopper configured to be received within the open end of the syringe barrel, and a plunger rod having a plunger rod body extending along a longitudinal axis from a proximal end to a distal end and at least one support disk provided on the distal end thereof. The support disk on the plunger rod is configured to bear against the protrusion of the syringe barrel upon misalignment of the plunger rod in the syringe barrel.

The invention discloses a sterile syringe (100) comprising a barrel (1) having internal surfaces (2), a plunger (3) movable within the barrel, a non-sliding seal (7) between the barrel and the plunger defining a sealed volume (8) and at least one filter (9) allowing only filtered gases to enter the sealed volume such that the syringe maintains its sterility even after several uses. The filters could be positioned on different locations on the syringe like on the non-sliding seal, the barrel, the barrel flange or the plunger handle.

A method of adapting an auto injector configured to actuate a prefilled syringe, the auto injector having a biasing member having a spring constant, the prefilled syringe being filled with a volume of therapeutic fluid, the prefilled syringe including a barrel, stopper, and a needle, the stopper having a path of travel, the biasing member arranged to move the stopper along the path of travel. An auto injector having an injection spring adapted to an aged prefilled syringe.

A device and method for measuring a volume of liquid expelled from a syringe is provided. The device generally includes a syringe barrel, a plunger actuated with a plunger rod, and a sensor. The sensor may include two ports with one port being in fluid communication with a source of fluid external to the syringe barrel, while the second port is in fluid communication either with a proximal end portion of the syringe barrel or a hollow plunger rod having a first end closed by the plunger. The method may include expelling liquid from the syringe; detecting and recording differential pressure with the sensor over time; and calculating the volume of liquid expelled from the syringe from the recorded differential pressure over time.

A fertility kit for performing self-insemination, comprising a package with three sets of sterilized disposable syringes and collection jars. Each fertility syringe comprises: an outer rigid tubular barrel and an inner plunger. The barrel comprises a curved distal end with a small circular distal opening, and a sealed proximal end, and an inner hollow tube housing the plunger. The barrel's proximal end also comprises two opposing circular members to fit a user's fingers; and a plunger flat end fitting in-between. The plunger distal end has a has a funnel-like shape that fits into the barrel curved end to push all the semen out while preventing a backflow. The collection jar comprises a sealable lid, and an inner surface comprising smooth seamless edges. Fresh or frozen, unwashed semen is deposited into the jar, pulled into the syringe, and administered cervically during a user's maximum monthly level of luteinizing hormone.

A gas sterilizable syringe includes an enclosure having walls that define a fluid chamber. A flowable material is disposed within the fluid chamber of the enclosure. A plunger is assembled with the enclosure and is moveable toward a distal end of the enclosure for dispensing the flowable material. One or more apertures are formed in at least one of the walls of the enclosure. A gas permeable barrier covers at least one of the apertures formed in at least one of the walls of the enclosure for enabling sterilization gases to pass through the at least one aperture covered by the gas permeable barrier while preventing the flowable material from passing through the at least one of aperture. The gas permeable barrier is permeable to the sterilization gases and impermeable to the flowable material disposed within the fluid chamber of the enclosure.

A system for priming an infusion pump is disclosed. The system includes a priming cap including a septum and configured to matably connect with a male part comprising a needle and attached to a length of tubing for fluid, wherein when matably connected with the male part, the priming cap occludes the tubing.

A sliding member which has low sliding resistance, can prevent the leakage of a liquid, has low dust emission properties and low leachability, and can be manufactured in a simple manner; and a method for manufacturing the sliding member. The sliding member includes an elastic molded body which is coated with a coating layer composition containing an amino-modified silicone compound having a silanol group and/or an alkoxysilyl group and also having an amino-containing group in a side chain. The method for manufacturing the sliding member includes the steps of: preparing the coating layer composition containing the amino-modified silicone compound having the silanol group and/or the alkoxysilyl group and also having the amino-containing group in a side chain; applying the coating layer composition to the elastic molded body; and coating the elastic molded body with the coating layer composition.