A BAK removal device is constructed as a plug of microparticles of a hydrophilic polymeric gel that displays a hydraulic permeability greater than 0.01 Da. The polymer hydrophilic polymeric gel comprises poly(2-hydroxyethyl methacrylate) (pHEMA). The particles are 2 to 100 μm and the plug has a surface area of 30 mm.sup.2 to 2 mm.sup.2 and a length of 2 mm to 25 mm and wherein the microparticles of a hydrophilic polymeric gel has a pore radius of 3 to 60 μm.

A particulate plug for removing a preservative from a solution, suspension, or emulsion comprising a drug is presented. The plug comprises microparticles of oxidized polyolefin (OxPO). The microparticles are irregular-shaped rigid aggregates and are sized and packed to yield a hydraulic permeability greater than 0.01 Da. The OxPO have absorbed portions of a preservative to be removed and/or a drug for delivery in solution, as can the copolymer.

The invention relates to a device for dispensing an aqueous liquid through an interface membrane made partially hydrophilic and partially hydrophobic, made so that when in operation, during each operation of dispensing a metered amount of liquid, the streams of air and liquid flow alternately in a capillary channel (18) downstream from the membrane. Said interface membrane (7) is made of a filtering material which includes biocidal metal cations in the body thereof. Said device comprises a porous insert (8), which is permeable both to liquid and to air, which is arranged upstream from the membrane in the path of the fluids and which is made of a material including sites with negative charges capable of attracting biocidal metal cations from said membrane.

A filter device (1) and a filtering infusion container comprising same. The filter device (1) comprises: a first component (20) comprising an outer casing (21) which is provided with a first accommodating cavity (213); a second component (40) comprising a flow channel (41); an actuator (50) used for closing or opening the flow channel (41), a head portion (51) of the actuator (50) being rotatably connected to the second component (40), a rod portion (52) of the actuator (50) being inserted in the flow channel (41), and covered by a seal cover (53); a filter membrane (30) sandwiched between the first component (20) and the second component (40); and a flow path (60) sequentially passing through the flow channel (41), the filter membrane (30), and the first accommodating cavity (213). The filtering infusion container comprises an infusion container (2) and the filter device (1). The filter device (1) is connected to the infusion container (2). One end of the flow path (60) leads to the infusion container (2), and the other end leads to the filter membrane (30). The structure of the filter device (1) enables the filter membrane (30) and an infusion fluid to be always located in different closed spaces before usage of the patient, so that the best integrity of the filter membrane (30) can be maintained; moreover, no fluid leakage will happen in the filter device (1), and the actuator (50) will not get loose during transportation.

A particulate plug for removing a preservative from a solution, suspension, or emulsion comprising a drug is presented. The plug comprises microparticles of a homopolymer comprising a hydrophilic repeating unit or of a copolymer comprising at least one hydrophilic repeating unit and at least one hydrophobic repeating unit. The microparticles are irregular-shaped rigid aggregates and are sized and packed to yield a hydraulic permeability greater than 0.01 Da. The homopolymers have absorbed portions of a preservative to be removed and/or a drug for delivery in solution, as can the copolymer.

The present disclosure relates to nozzles for removing a preservative from a fluid comprising a therapeutic agent to an eye. More particularly, the nozzles disclosed herein may minimize patient exposure to preservative by rapidly and selectively removing a preservative from a solution comprising a therapeutic agent. An example nozzle may comprise a flow diverter which directs a flow path from a fluid inlet to a fluid outlet over a length longer than the distance from the inlet to the outlet. In some cases, the nozzle may comprise a preservative removing agent.

A particulate plug for removing a preservative from a solution, suspension, or emulsion comprising a drug is presented. The plug comprises microparticles of a hydrophobic polymer/fatty acid blend. The microparticles of hydrophobic polymer/fatty acid blend selectively absorb preservative allowing the drug to remain in solution for delivery.

A system is disclosed for recovering autologous thrombin from a blood product. The blood product is drawn into an injecting syringe and a clot is allowed to form. A discharge port of the injecting syringe is communicably connected to an intake port of an aspirating syringe through a hydrophilic filter assembly. The injecting and aspirating syringes are simultaneously operated to transmit blood product through the filter such that fibrous clotting material and red blood cells are removed by the filter and a concentrated, high-quality thrombin solution is recovered.

According to some embodiments of the present disclosure, an adaptor configured to couple with a sealed vial can include a connector interface. The adaptor can include one or more access channels (e.g., passages). In some cases the one or more access channels are in fluid communication with the connector interface. The adaptor can include a piercing member. The piercing member can include a regulator channel. The adaptor can include a regulator assembly. The regulator assembly can include a first regulator inlet. In some cases, the regulator includes a second regulator inlet. One or more of the first and second regulator inlets can include a filter configured to filter fluid passing into and/or out of the respective regulator inlets. One or more valves can be positioned between the first and/or second regulator inlets and the piercing member.

A plural-use drop-by-drop dispenser for sterile liquid product comprises a vial (1) for containment of the liquid product (2) and a connector (4) provided with a plug (8) which is normally hermetically closed and with a cartridge (19) with sterilizing filter (24) which can be axially moved to force open said plug (8) to dispense the liquid product and allow the hermetic reclosure thereof at the end of dispensing. The cartridge (19) is provided with a filter-holding bottom element (25) provided with a dispensing spout (26), possibly in antimicrobic material, with elastically flexible converging lips (27), which open under pressure of the liquid product (2) for drop-by-drop dispensing thereof and elastically hermetically reclose at the end of the dispensing operation.