CN2059360U - Microfilter for blood transfusion - Google Patents

Abstract

The utility model discloses a medical transfusion device, in particular to a blood microfilter which takes a fixed filtering net as the filter core. The structure of the microfilter for blood transfusion comprises a housing that conjugated by an upper part and a lower part, and the interior of the housing is provided with the filter core that has joggling ripples. The microfilter for blood transfusion is characterized in that the entire side wall of the housing has integrally formed structure as other parts of the housing. Compared with the closest prior art, the microfilter for blood transfusion which is easy to achieve the advanced world standard of similar products has easy manufacturing process and low price, and is suitable to be disposable medical supplies that can be commonly used.

Description

Microfilter for blood transfusion

This utility model relates to a kind of medical transfusion set, particularly a kind of blood micro-filter that adopts fixing filter screen to make filtering element (cartridge).Belong to disposable medical article.

The blood source that present hospital is used to transfuse blood mainly is a banked blood, and banked blood can cause the complication in the blood transfusion because the existence of microgranule (grumeleuse) is arranged, and as heating, pulmonary infarction etc., has been the medical circle admitted facts, so the blood of blood transfusion should filter.China is existing a kind of coarse filter aspect the few drop blood transfusion of transfusion volume, and its structure is that a hemofiltration mesh bag is equipped with in one section flexible pipe the inside, and this coarse filter mesh is big and block easily; And in the occasion that needs a large amount of blood transfusions as cardiovascular surgical procedure, wound, gynecological etc., China does not have a kind of filter that has high hemofiltration performance and enough flows are arranged as yet, conventional method is to adopt filtered through gauze or add coarse filter, this mode can only the big grumeleuse of elimination, and result of use is unsatisfactory; External at present existing a kind of immediate product, its structure is the filtering element (cartridge) that the ripple warpage is housed in the hard shell body, it is a kind of advanced micro-filter that is fit to a large amount of blood transfusion usefulness, the effective above microgranule of 25～40 μ m in the elimination banked blood, but its manufacture difficulty is big, the price height is difficult to the disposable medical article that generally uses as domestic.

The purpose of this utility model provides a kind of micro-filter of the usefulness of transfusing blood, it is by reasonably improving prior art constructions, make that manufacturing process is simple, price is low, reach the advanced level of external like product again easily, can be used as domestic disposable medical article.

This utility model is achieved in that a kind of micro-filter of the usefulness of transfusing blood, it is a hard shell body that gets up by upper and lower two part fluid-tight engagement, the filtering element (cartridge) of ripple warpage is housed in it, the blood input port is arranged at its top, there is blood outlet its underpart, and the upper and lower part whole sidewall separately that it is characterized in that housing is all with its housing other parts separately structure that is formed in one.

Above-mentioned so-called hard shell body is meant that the use shape is more fixing, and on-deformable housing is in order to distinguish mutually with the existing outer field hose construction of domestic coarse filter.

Such scheme since housing upper and lower part whole sidewall separately all with its other parts separately structure that is formed in one, so forming, the integral body of housing only needs the one procedure of upper and lower part joint, sidewall does not all have other outer port needs sealing in addition, this not only makes technology very simple, and withstand voltage and leakage performance all is easier to guarantee, need not to guarantee, thereby price can greatly reduce with higher technological requirement.And immediate prior art (U.S.'s product), two avris portions of its housing are no wall construction, after upper and lower two parts engage, also need to seal this no wall sidepiece with two lids, this had both caused the complexity of technology, need the withstand voltage and leakage performance guarantee to use with higher technological requirement again, its manufacturing cost is also high naturally.

In addition, this utility model also can improve the structure of filtering element (cartridge), make filtering element (cartridge) under present easy to reach technological level of China and lower cost also can have high hemofiltration performance and enough flows, this also can be used as and further reaches this utility model purpose on the other hand.Because in the immediate prior art, filtering element (cartridge) is a kind of proprietary material of micropore, needs to make specially, and its technological requirement is quite high.

Below in conjunction with accompanying drawing this utility model is done to describe more specifically.

Fig. 1 is immediate prior art constructions cutaway view.

Fig. 2 is the structure cutaway view of a kind of scheme of this utility model.

Fig. 3 is the local enlarged diagram of a kind of scheme of filtering element (cartridge) among Fig. 2.

With reference to Fig. 1, the microstrainer of this blood transfusion, be by upper and lower two parts 1 and 2 articulate hard shell bodies 3, the filtering element (cartridge) 4 of ripple warpage is housed in it, blood input port 5 is arranged at its top 1, there is blood outlet 6 its underpart 2, and two avris portions 7 of housing 3 and 8 are no wall construction, and the sealing of no wall construction is to be placed on sidepiece 7 and 8 by lid 9 and 10 again.

With reference to Fig. 2, the micro-filter of this blood transfusion usefulness, be one by upper and lower two parts 11 and 12 articulate hard shell bodies 13, the filtering element (cartridge) 14 of ripple warpage is housed in it, blood input port 15 is arranged at its top 11, there is blood outlet 16 its underpart 12, and feature is that upper and lower two the parts 11 and 12 whole sidepiece 17 and 18 separately of housing 13 is all with its housing other parts separately structure that is formed in one.As seen Fig. 2 is than Fig. 1, and the integral body of its housing is formed technology and wanted much simple, and withstand voltage and leakage performance more easily reaches instructions for use, so low cost of manufacture.In addition, with prior art products unified external shape is arranged in order to make this utility model, two avris walls of housing 13 also can add two 9 and 10 such lids as shown in Figure 1 outward in addition.

With reference to Fig. 3, filtering element (cartridge) 14 is to be superimposed by 19,20,21 3 layers of mesh grid to constitute, and the mesh in intermediate layer 20 is less than the mesh of skin 19 and 21, and mesh grid is easy to manufacture, cost is low, and filtering traffic also guarantees easily.

Claims (2)

1, a kind of micro-filter of the usefulness of transfusing blood, it is a hard shell body that gets up by upper and lower two part fluid-tight engagement, there is the filtering element (cartridge) of ripple warpage its inside, the blood input port is arranged at its top, there is blood outlet its underpart, and the upper and lower part whole sidewall separately that it is characterized in that housing is all with its housing other parts separately structure that is formed in one.

2, by the described micro-filter of claim 1, it is characterized in that this filtering element (cartridge) is to be superimposed by three layers of mesh grid to constitute, the mesh in intermediate layer is less than outer field mesh.

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