CN2902299Y - Filtration means for transfusion or blood transfusion - Google Patents

Abstract

A filter apparatus for transfusion, a filter element composing multilayer functional membraneous filtering material is arranged in the encapsulated inner cavity of the shell with an interface communicated with outside, wherein the filter element is a monolithic structure comprising by the component every functional membraneous filtering material extending along peripheral inter-merged perimeter, the merged perimeter of the filter element is interconnected with the inter-merged perimeter of the soft membraneous encapsulated shell outside of the filter element, on the corresponding location of two sides soft membraneous encapsulated shell on the pathway of full effective filter portion of the filter element that liquid is capable of passing through, the interfaces communicated with outside are separately positioned to be used in connecting with liquid in and out pipe. The filter apparatus effectively resolves the question of by-pass edge leakage of filtered liquid, guarantees the filter effect, and the difficult of manufacture is small, in particular to convenient to disinfect and germicidal treatment before using in the mode of high temperature steaming.

Description

The transfusion and blood transfusion filters

Technical field

This utility model relates to a kind of filters of using for transfusion and blood transfusion, particularly but be not limited in the transfusion filter tool of using for the filtering leukocyte.

Background technology

Transfusion and blood transfusion is one of medical procedure of using always.With the blood transfusion is example, no matter is to use blood as deposit, or the blood transfusion in the treatment clinical course, generally all needs filtering leukocyte wherein, and therefore corresponding filters is absolutely necessary.The basic structure of the existing a kind of leucocyte filter that uses is to be provided with the corresponding filter cartridge construction of being made up of the functional membranaceous filtering material of multilamellar in the content cavity of the hard shell of detaining envelope mutually at present.The membranaceous filtering material of each layer function of forming its filter cartridge construction is with the overlap mode setting, and is fixed by the button capsule body that is positioned at its both sides at its periphery place.Owing to having the slit bypass side leakage promptly may occur slightly, its periphery button envelope place of compressing causes filtering inefficacy, therefore the requirement and the difficulty of its manufacturing are all very high, and the filter of this version is unfavorable for the sterilization treatment of high compressed steam, be difficult to reach purpose, have very big hidden danger clinical safe in utilization by high steam thorough disinfection sterilization.

Among the disposable efficient blood exchange transfusion set who in the Chinese patent literature of notification number CN2245983Y, once introduced, having related to a kind of being used for except that leukocytic efficient hemofilter, is the functional fiber that is filled with forms such as chemical fibre silk, non-woven fabrics, fusion spray cloth in a pvc pipe shell.Have small gap between its implant and tube wall equally, particularly the static pressure of liquid blood can be big with caliber support when hemofiltration, thereby make the part blood can not be through the filtration of implant and slit flow mistake from the side.The document introduces that its leukocyte removal efficiency is the highest can only to reach 99%, does not also reach the leukocyte remainder less than 2.5 * 10 ⁶National pharmaceuticals industry standard YY0329-2002 " disposable use leucocyte-removing filter " requirement.

The utility model content

In view of the foregoing, this utility model will provide a kind of transfusion and blood transfusion filters that improves structure, make it can solve the bypass side leakage problem that is filtered liquid effectively, guarantee the safety of filtering effect and use, and manufacture difficulty is little, and the sterilization of also being convenient to especially before utensil uses in the mode of high-temperature steam is handled.

The basic structure form of this utility model transfusion and blood transfusion filters is to be communicated with in the housing encapsulated content chamber of interface to be provided with the filter cartridge construction of being made up of the functional membranaceous filtering material of multilamellar outside having equally.Wherein, said filter cartridge construction is served as reasons each functional membranaceous filtering material of its composition through merge the monolithic construction that periphery constitutes along its periphery mutual, the envelope periphery that melts of the mantle shape encapsulating housing in the fusion of filter cartridge construction periphery and its outside also fuses mutually and is overall structure, make liquid be respectively arranged with the external connected entrance that is used to connect liquid turnover pipe by the corresponding position of the both sides mantle shape encapsulating housing on the path of all effective filtration fraction of filter cartridge construction.

The concrete shape of above-mentioned said filter cartridge construction and corresponding mantle shape encapsulating housing, need not special the qualification and multiple choices can be arranged, for example can be adopted as comprise circle or oval by closed curve around the multiple shape that forms, perhaps be adopted as rhombus, rectangle, square, triangle, multiple rectilinear polygon or the polygonal shape of fillet such as trapezoidal.Said mantle shape encapsulating housing can be selected in medical field the PVC flexible film that allows to use, composite plastic flexible film, tinfoil paper papery flexible film, PE flexible film etc. for use.

Because the filter cartridge construction in the transfusion and blood transfusion filters of this utility model said structure, be to be to fuse the monolithic construction that forms mutually at its periphery place by the functional membranaceous filtering material of multilamellar, and the periphery of this filter cartridge construction fuses mutually with the mantle shape encapsulating housing in its outside again simultaneously and is overall structure, therefore the bypass side leakage problem that liquid may occur be can stop fully by filter cartridge construction the time, filtering effectiveness and filter quality guaranteed effectively.On the other hand, the encapsulating housing of mantle shape also will help penetrating of high steam usually and reach the purpose that thorough disinfection is sterilized, and eliminate the potential safety hazard in the clinical use.

Below, foregoing of the present utility model is described in further detail again by the specific embodiment by the accompanying drawing illustrated embodiment.But this should be interpreted as that the scope of the above-mentioned theme of this utility model only limits to following example.Do not breaking away under the above-mentioned technological thought situation of this utility model, various replacements or change according to ordinary skill knowledge and customary means are made all should be included in the scope of the present utility model.

Description of drawings

Fig. 1 is a kind of structural representation of this utility model transfusion and blood transfusion filters.

The specific embodiment

Transfusion and blood transfusion filters as shown in the figure is the round rectangle shape, is provided with the filter cartridge construction of being made up of the functional membranaceous filtering material of multilamellar 3 in the housing 6 encapsulated content chambeies of connection interface outside having.Wherein filter cartridge construction 3 is served as reasons each functional membranaceous filtering material of its composition through merge the monolithic constructions that periphery 5 constitutes along its periphery mutual; Simultaneously, this fusion of filter cartridge construction 3 periphery 5 still fuses mutually and is overall structure with the envelope periphery 4 that melts of the mantle shape encapsulating housing 6 in its outside.Make liquid be respectively arranged with the external connected entrance that is used to connect liquid turnover pipe 1,2 by the reverse two-end part place of the both sides mantle shape encapsulating housing 6 on the path of filter cartridge construction 3 all effective filtration fractions.

Claims (2)

1. transfusion and blood transfusion filters, outside having, be provided with the filter cartridge construction of forming by the functional membranaceous filtering material of multilamellar (3) in housing (6) the encapsulated content chamber of connection interface, it is characterized in that said filter cartridge construction (3) serves as reasons each functional membranaceous filtering material of its composition through merge the monolithic construction that periphery (5) constitutes along its periphery mutual, the envelope periphery (4) that melts of the mantle shape encapsulating housing (6) in the fusion periphery (5) of filter cartridge construction (3) and its outside also fuses mutually and is overall structure, make liquid can pass through all effectively corresponding positions of the both sides mantle shape encapsulating housings (6) on the path of filtration fractions of filter cartridge construction (3), be respectively arranged with the external connected entrance that is used to connect liquid turnover pipe (1,2).

2. transfusion and blood transfusion filters as claimed in claim 1 is characterized in that said filter cartridge construction (3) is the shape that comprises the closed curve form of circle or ellipse, or is rectilinear polygon, the polygonal shape of fillet.

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