摘要:
A filter assembly is provided comprising a housing; a fluid inlet and a fluid outlet in the housing, each opening into a fluid chamber; and, disposed in the fluid chamber across the line of fluid flow from the inlet to the outlet so that all flow from the fluid inlet to the fluid outlet must pass therethrough, a filter element composite comprising a filter sheet material sandwiched between layers of foraminous spacer sheet material. The filter element composite has an upstream side and a downstream side and separates the chamber into a first portion on one side of the filter element composite communicating with the fluid inlet, and a second portion on the other side of the filter element composite communicating with the fluid outlet. The filter element composite is folded on itself in at least a double layer defining therebetween an open interior space in fluid communication with one of the first and second portions of the fluid chamber, the outer side of the filter element composite being in fluid communication with the other of the first and second portions of the fluid chamber; and the double layer filter element composite is arranged in a plurality of convolutions extending transversely across the fluid chamber back and forth across the line of fluid flow from the fluid inlet to the fluid outlet.
摘要:
A filter assembly is provided comprising a housing; a fluid inlet and a fluid outlet in the housing, each opening into a fluid chamber; and, disposed in the fluid chamber across the line of fluid flow from the inlet to the outlet so that all flow from the fluid inlet to the fluid outlet must pass therethrough, a filter element composite comprising a filter sheet material sandwiched between layers of foraminous space sheet material, the filter element composite having an upstream side and a downstream side and separating the chamber into a first portion on one side to the filter element composite communicating with the fluid inlet, and a second portion on the other side of the filter element composite communicating with the fluid outlet; the filter element composite being folded on itself in at least a double layer defining therebetween an open interior space in fluid communication with one of the first and second portions of the fluid chamber, the outer side of the filter element composite being in fluid communication with the other of the first and second portions of the fluid chamber; the double layer filter element composite being arranged in a plurality of convolutions extending transversely across the fluid chamber back and forth across the line of fluid flow from the fluid inlet to the fluid outlet, so that the fluid flow en route to the fluid outlet from the fluid inlet may pass at least twice across convoluted folds through the filter sheet from the upstream side to the downstream side thereof, between one portion of the fluid chamber and the space between the double layer of filter sheet material, and then in the opposite direction, back through the filter sheet between the space between the double layer of filter sheet material and the upstream portion of the fluid chamber.
摘要:
A filter for intravenous liquid administration is provided having a filter housing (1); a filter chamber (13) in the housing; an inlet member (17) and an outlet member (22) in the housing (1) in fluid flow communication with the filter chamber (13); a filter (11) in the filter chamber (13) from the inlet member (17) to the outlet member (22) so that all through flow must pass through the filter; and dividing the chamber (13) into two portions (15,16), one upstream (15) and one downstream (16) of the filter; a vent (26) in the housing (1) in flow communication with the upstream portion (15) of the filter chamber (13); and a liquid-impermeable gas-permeable porous member (11) disposed across the line of flow through the vent (26), so that all vent flow must pass through the member (11), the member (11) restricting such flow to gas to which it is permeable; the inlet member (17) being shaped for attachment to a supply of liquid (21) for intravenous administration; and the outlet member (22) being shaped for attachment to an intravenous liquid administration apparatus (25).
摘要:
The cap connector (51) comprises a housing (1) of resilient plastic material defining the walls of a through passage (5) having one end (11) adapted for attachment to one of the ports (42) and another end (10) adapted for attachment to the other port. A cap closure (2) closing off one end (10) of the through passage (5) is integral with the housing (1) and of the same plastic material and is demarked by an annular weak area (6) from the remainder of the housing while the other end (11) of the through passage is open. The cap connector having its closure unbroken is suitable for closing off a port like a delivery port (42) of a receptacle (20) in a leak-tight bacteria-tight seal. The cap closure (2) is removable by tearing it away from the housing (1) at the weak area (6). to open that end of the passage (5) and to convert the cap into a connector for making a leak-tight and bacteria-tight connection between the port of the receptacle (20) and a port of another device (44).
摘要:
A filter assembly is provided comprising a housing; a fluid inlet and a fluid outlet in the housing, each opening into a fluid chamber; and, disposed in the fluid chamber across the line of fluid flow from the inlet to the outlet so that all flow from the fluid inlet to the fluid outlet must pass therethrough, a filter element composite comprising a filter sheet material sandwiched between layers of foraminous space sheet material, the filter element composite having an upstream side and a downstream side and separating the chamber into a first portion on one side to the filter element composite communicating with the fluid inlet, and a second portion on the other side of the filter element composite communicating with the fluid outlet; the filter element composite being folded on itself in at least a double layer defining therebetween an open interior space in fluid communication with one of the first and second portions of the fluid chamber, the outer side of the filter element composite being in fluid communication with the other of the first and second portions of the fluid chamber; the double layer filter element composite being arranged in a plurality of convolutions extending transversely across the fluid chamber back and forth across the line of fluid flow from the fluid inlet to the fluid outlet, so that the fluid flow en route to the fluid outlet from the fluid inlet may pass at least twice across convoluted folds through the filter sheet from the upstream side to the downstream side thereof, between one portion of the fluid chamber and the space between the double layer of filter sheet material, and then in the opposite direction, back through the filter sheet between the space between the double layer of filter sheet material and the upstream portion of the fluid chamber.
摘要:
A vented filter spigot for gravity feed intravenous liquid adminstration is provided having a filter spigot housing (1); a filter chamber (13) in the housing; an inlet (17) and an outlet (22) in the housing, the housing being arranged to have the inlet (17) oriented up and the outlet (22) oriented down when installed for liquid feed from a liquid supply for intravenous administration (21); the inlet being shaped for attachment to a supply of liquid in a container for intravenous administration, and the outlet being shaped for attachment to an intravenous liquid administration apparatus (25); a liquid-permeable filter (10) that is gas-impermeable when wet disposed in the filter chamber in a manner so as to extend generally vertically when the inlet is oriented up, and across the line of fluid flow through the chamber from the inlet to the outlet so that all through flow must pass through the filter; and dividing the chamber into two generally vertically-extending portions, one upstream (15) and one downstream (16) of the filter; a vent (26) in an uppermost portion of the housing when the inlet is oriented up in flow communication with the upstream portion of the filter chamber; and a liquid-impermeable gas permeable filter (11) disposed across the line of flow through the vent, so that all vent flow must pass through the filter, the filter restricting such flow to gas to which it is permeable; first and second passages (31,30) in the housing putting the inlet into fluid flow communication with the filter chamber, the first passage (31) opening into an upper part of the upstream portion of the filter chamber, and the second passage (30) being longer than the first and opening into a lower part of the upstream portion of the filter chamber; whereby outflow of liquid via the filter chamber (13) through the outlet (22) aspirates air via the vent, (26) liquid-impermeable gas-permeable filter (11) and first passage (31) into the container holding the supply of liquid (21), and makes it possible to maintain liquid flow from the container (21) via the second passage (30) to the outlet (22).
摘要:
A disposable box filter is provided comprising a box housing (1) in at least two portions (2, 3) and having a fluid chamber (4) with two fluid ports (5, 6), and a filter element (10) in corrugated sheet form extending across the fluid chamber (4), held by the housing across the line of flow between the fluid ports (5, 6), with the corrugations supported in a fixed uniform spacing against differential fluid pressure and fluid flow.