Abstract: Apparatus for dispensing foam for the treatment of, inter alia, varicose veins. The apparatus includes a source of foam and a dispensing device which has an inlet in communication with the source of foam, a usable foam outlet, and a waste bleed outlet. The waste bleed outlet communicates with the inlet and with the useable foam outlet, and has a higher resistance to flow of foam than that of the usable foam outlet. The useable foam outlet may be blocked off such that foam may flow through the high resistance waste bleed outlet, and the usable foam outlet may be opened such that foam may flow through the usable foam outlet.

Abstract: A check valve is provided, including a first hose connector housing defining an entry passage extending into an entry space at least partially defined by an annular valve seat, a second hose connector housing coupled with the first hose connector housing and defining an exit passage, and a generally flexible perforated membrane disk positioned between the first and second hose connector housings such that the membrane disk selectively engages the valve seat.

Abstract: Apparatus (1) for the introduction of air into enteral containers (2). A valve (14) is provided in a connection member (4) connecting the enteral set with the container (2) containing the enteral liquid and controls the introduction of air corresponding to the consumption of the enteral liquid. The valve (14) may include an oleophobic filter material that covers the air inlet (16) projecting into the connection member (4). The valve (14) on the side facing the container (2) is provided with a cutting device (20) for the foil closure of aluminum or plastics closing the container (2) in its initial delivered state. The cutting device (20) may be a circular or partly circular projection (28) rising from a low side (30) to a high side (32).

Abstract: A device for dispensing liquids in drop form is provided, including a dropper tip, a liquophilic membrane positioned within the dropper tip to substantially prevent contaminants from entering the dropper tip, and a liquophobic membrane positioned within the dropper tip, wherein the liquophobic membrane is substantially impervious to liquid and is generally pervious to air. The dropper tip defines an entry channel, a first passage defining a liquid outlet flow path for fluid to exit the dropper tip, and a second passage defining an air inlet flow path for fluid to enter the dropper tip. The liquophilic membrane is positioned between the entry channel and the first passage to substantially prevent contaminants from entering the entry channel via the first passage, and the liquophobic membrane is positioned between the entry channel and the second passage.

Abstract: A check valve is provided, including a first hose connector housing defining an entry passage extending into an entry space at least partially defined by an annular valve seat, a second hose connector housing coupled with the first hose connector housing and defining an exit passage, and a generally flexible perforated membrane disk positioned between the first and second hose connector housings such that the membrane disk selectively engages the valve seat.

Abstract: A check valve is provided, including a first hose connector housing defining an entry passage, a second hose connector housing engaging the first hose connector housing and defining an exit passage, a generally flexible perforate membrane disk positioned between the first and second hose connector housings for selectively sealingly separating the first and second hose connector housings from each other, and an overmolded component connecting the first and second hose connector housings with each other.

Abstract: A foam transfer device (600) is described, for use with aerosol canister apparatus for producing a sclerosant foam for the treatment of, inter alia, varicose veins. The device enables diversion of an initial quantity of below-specification foam from the canister to waste, e.g. to an integral waste chamber, before dispensing a further quantity of foam for use in treatment. The switching of the flow from the waste chamber to a different outlet (618) for use is accomplished without interrupting the flow from the aerosol canister since this would cause the foam to drop below specification again. The waste chamber may be transparent so that the foam entering it can be observed and a decision made by a user when to stop diverting foam to waste. Alternatively, the foam may be diverted automatically e.g. when a set time has elapsed or a set volume of foam dispensed. The foam for use is normally dispensed into a syringe for subsequent injection into a varicose vein of a patient.

Abstract: Apparatus (1) for the introduction of air into enteral containers (2). A valve (14) is provided in a connection member (4) connecting the enteral set with the container (2) containing the enteral liquid and controls the introduction of air corresponding to the consumption of the enteral liquid. The valve (14) may include an oleophobic filter material that covers the air inlet (16) projecting into the connection member (4). The valve (14) on the side facing the container (2) is provided with a cutting device (20) for the foil closure of aluminum or plastics closing the container (2) in its initial delivered state. The cutting device (20) may be a circular or partly circular projection (28) rising from a low side (30) to a high side (32).

Abstract: A combination filter assembly having a plurality of filter sieves positioned in parallel one after the other in the direction of flow. The filter sieves are stretched and mounted in housing elements to form filter elements. The housing elements are in contact with each other by means of top and bottom bearing faces, and are maintained in a stack. The filter elements have a cylindrical shape with annular bearing faces, wherein one bearing face includes a centering male coupling and sealing formation, and the other bearing face includes a corresponding centering female coupling and sealing formation.

Abstract: A combination filter assembly having a plurality of filter sieves positioned in parallel one after the other in the direction of flow. The filter sieves are stretched and mounted in housing elements to form filter elements. The housing elements are in contact with each other by means of top and bottom bearing faces, and are maintained in a stack. The filter elements have a cylindrical shape with annular bearing faces, wherein one bearing face includes a centering male coupling and sealing formation, and the other bearing face includes a corresponding centering female coupling and sealing formation.