CN204766754U - Side opening three -layer PVC sabot filter - Google Patents
Side opening three -layer PVC sabot filter Download PDFInfo
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- CN204766754U CN204766754U CN201520478208.4U CN201520478208U CN204766754U CN 204766754 U CN204766754 U CN 204766754U CN 201520478208 U CN201520478208 U CN 201520478208U CN 204766754 U CN204766754 U CN 204766754U
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Abstract
The utility model discloses a side opening three -layer PVC sabot filter, including import pipe, cephacoria, filter membrane layer, first caudacoria, second caudacoria and outlet pipe, filter membrane layer periphery is connected in the cephacoria heat seal, forms with the front side on filter membrane layer and filter the ante -chamber, and all the other parts of cephacoria are connected to the outlet pipe front side from filter membrane layer heat seal portion front side, and the second caudacoria is connected to the outlet pipe front side from filter membrane layer heat seal portion, makes and forms the filtration back cavity between first caudacoria, second caudacoria and the filter membrane layer. The utility model discloses under the unchangeable condition of filter area, reduced the surface area of straining the ante -chamber, the surface area of straining the ante -chamber equals filter area, makes blood can lead to filtration membrane completely, reduces the blood loss, has further reduced the extrusion to the exit end pipe, makes the filtration more unobstructed, can not take place blocking phenomenon, the utility model discloses only use three -layer PVC membrane, realize effective saving of cost.
Description
Technical field
This utility model relates to medicine and hygiene fields, relates in particular to a kind of side opening three layers of PVC soft shell leukocyte depletion filter.
Background technology
Modern transfusion science research shows, in blood, non-therapeutic composition leukocyte is a kind of " polluter ", can produce leucocyte antibody, cause a series of untoward reaction and side effect after allogenic blood transfusions.Clinical data shows that a certain proportion of blood donor has transfusion reaction in various degree, as: nonhemolytic febrific reaction, Inefficacy of Platelets Transfusion, transfusion-associated graft versus host disease (GVHD), cytomegalovirus (CMV) infects.Therefore, blood and composition removal leukocyte thereof are of great significance to transfusion safety and clinical treatment.
As shown in Figure of description Fig. 1, original soft shell filter comprises the front adventitia 1 ' of filter and adventitia 2 ' and filter membrane component after filtering, this filter membrane component is located between the front adventitia 1 ' of filter and the rear adventitia 2 ' of filter, thus sap cavity 20 ' after forming the front sap cavity 10 ' of filter and filter, filter membrane component comprises filter membranous layer 3 ' and is located at zona 4 ' in the two panels PVC of filter membranous layer both sides respectively, in this PVC, the inward flange of zona 4 ' is connected with the outer fringe seal of filter membranous layer 3 ', and simultaneously, outer rim and the adventitia 1 ' before filter of zona 4 ' and the outer fringe seal of filtering rear adventitia 2 ' are connected.Inlet tube 11 ' is communicated with the front sap cavity of filter, sap cavity after outlet 21 ' connection filter, and parallels with filter membranous layer 3 '.
The soft shell filter of this technology needs cost four tunic, and wherein in two panels, zona will excise bulk mid portion, causes significant wastage material cost.In addition, utilize this frit, the loss amount of blood is larger, based on this structure, filters the effective filtration area of ante-chamber surface area much larger than filter membrane, causes filter ante-chamber bottom to be detained a part of blood, cannot complete filtration.Add PVC film and have larger ductility, inlet tube and outlet are all parallel to filter membranous layer and arrange, and cause local greatly intrinsic pressure, the rate of filtration is slow, even blocks.And produce certain resistance during filter membrane filtration, cause filtering the state that ante-chamber remains expansion in the process of filtering, filtering film component easily extrudes port of export conduit, finally causes the flow velocity of blood slack-off, even to be filtered membrane module completely closed for port of export conduit, causes blocking.
Utility model content
Goal of the invention: in order to overcome the deficiencies in the prior art, this utility model provide a kind of based on trilamellar membrane heat seal and prevent filter block side opening three layers of PVC soft shell filter.
Technical scheme: for achieving the above object, side opening of the present utility model three layers of PVC soft shell filter, comprise inlet tube, the first cephacoria, the second cephacoria, filter membranous layer, the first caudacoria, the second caudacoria and outlet, described filter membranous layer outer ring is heat seal portion; Described first cephacoria connects the heat seal portion of filter membranous layer, forms closed filtration ante-chamber with the front side of filter membranous layer, and inlet openings is in the first cephacoria and ante-chamber is filtered in connection; Described second cephacoria is connected to the front side of outlet from the front side in filter membranous layer heat seal portion, and the second caudacoria comprises the ring part in heat seal portion on rear side of connection filter membranous layer and is connected to the connecting portion on front side of outlet from the rear side in filter membranous layer heat seal portion; Described first caudacoria, form closed filtration back cavity between the second caudacoria and filter membranous layer, outlet is parallel to filter membranous layer and arranges and be opened on filtration back cavity.
The both sides of front side described in the utility model and the corresponding filter membranous layer of rear side difference.The side at inlet tube place is front side, and what it was communicated with is filter ante-chamber; What outlet was communicated with is filter back cavity, and its setting direction is parallel with filter membranous layer.Above-mentioned design facilitates soft shell filter to hang use.
Filter membranous layer comprises at least one metafiltration film composition, is generally 10 ~ 20 tunics, by High frequency heating, by outer perimeter section pressing, and cuts the part exceeding heat seal portion.The part that described first cephacoria and the second caudacoria exceed filter course heat seal portion forms outer wing, is connected with the common heat seal of the outer rim of the first caudacoria.Based on this design, the surface area filtering ante-chamber is reduced, substantially suitable with filter area.
As further optimization of the present utility model, described inlet tube is square, and one end vertical connection of inlet tube filters ante-chamber, and the other end opening direction of inlet tube is parallel to filter membranous layer, and contrary with outlet opening direction.
First cephacoria described in the utility model, the second cephacoria, the first caudacoria, the second caudacoria are that PVC material is made.Wherein, the first cephacoria and the second cephacoria are the common PVC film of one deck.This tunic is by being heat sealing in filter membranous layer heat seal portion, and the part in heat seal portion is the first cephacoria, exceeds heat seal portion and on front side of connection outlet pipe is the second cephacoria.
In order to prevent filtering the extruding that back cavity is subject to filtering ante-chamber, the first caudacoria and filter course being affixed, thus having influence on filter effect, between described first caudacoria and filter membranous layer, being provided with bracing frame.This bracing frame includes but not limited to the tubulose that plastics, silica gel, rubber, metal material are made or club.Bracing frame is sealed by high frequency heat seal, be fixed on and filter in back cavity.
Beneficial effect: this utility model, when filter area is constant, reduces the surface area of filter ante-chamber, the surface area of filter ante-chamber equals filter area, enables blood completely by filter membrane, decreases blood loss; Filter ante-chamber surface area reduces, and when the coefficient of expansion is identical with blood pressure, the degrees of expansion of filter ante-chamber reduces, thus decreases the extruding to port of export conduit, makes filtration more unobstructed, can not blockage phenomenon; Contrast original soft shell filter, this utility model only uses three layers of PVC film, and for the feature of this product mass production, raw-material saving can greatly reduce cost and drop into.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing four tunic soft shell filters;
Fig. 2 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is further described.
As shown in Figure 2, a kind of side opening three layers of PVC soft shell leukocyte depletion filter, comprise inlet tube 11, first cephacoria 12, second cephacoria 13, filter membranous layer 3, first caudacoria 22, second caudacoria 23 and outlet 21, leukocyte filter membranes is stacked and pressing forms in periphery by 10 ~ 20 layers for filter membranous layer 3, and the part of periphery pressing is heat seal portion 30.Inlet tube 11 is square, and one end vertical connection of inlet tube 11 filters ante-chamber 10, and the other end opening direction of inlet tube 11 is parallel to filter membranous layer 3, and contrary with outlet 21 opening direction.The bracing frame 5 that silica gel hose supports is provided with between first caudacoria 12 and filter membranous layer 3.Bracing frame 5 is sealed by high frequency heat seal, be fixed on and filter in back cavity 20.
First cephacoria 12 connects the heat seal portion 30 of filter membranous layer 3, forms closed filtration ante-chamber 10 with the front side of filter membranous layer 3, and inlet tube 11 is opened on the first cephacoria 12 and is communicated with and filters ante-chamber 10; Second cephacoria 12 is connected to the front side of outlet 21 from the front side in filter membranous layer heat seal portion 30, and the second caudacoria 23 comprises the ring part 231 in heat seal portion 30 on rear side of connection filter membranous layer 3 and is connected to the connecting portion 232 on front side of outlet 21 from the rear side in filter membranous layer heat seal portion 30; Form closed filtration back cavity 20 between first caudacoria 22, second caudacoria 23 and filter membranous layer 3, outlet 21 is parallel to filter membranous layer 3 and arranges and be opened on filtration back cavity 20.
The part that first cephacoria 12 and the second caudacoria 23 exceed filter course heat seal portion 30 forms outer wing 4, is connected with the common heat seal of outer rim of the first caudacoria 22.Based on this design, the surface area filtering ante-chamber is reduced, substantially suitable with filter area.
First cephacoria 12 and the second cephacoria 13 are the common PVC film of one deck.This tunic is fixed in filter membranous layer heat seal portion 30 by heat seal, and the part in heat seal portion 30 is the first cephacoria 12, exceeds heat seal portion and on front side of connection outlet pipe is the second cephacoria 13.First cephacoria 12, second cephacoria 13, first caudacoria 22, second caudacoria 23 is made for PVC material.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from this utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. side opening three layers of PVC soft shell filter, it is characterized in that: comprise inlet tube, the first cephacoria, the second cephacoria, filter membranous layer, the first caudacoria, the second caudacoria and outlet, described filter membranous layer outer ring is heat seal portion; Described first cephacoria connects the heat seal portion of filter membranous layer, forms closed filtration ante-chamber with the front side of filter membranous layer, and inlet openings is in the first cephacoria and ante-chamber is filtered in connection;
Described second cephacoria is connected to the front side of outlet from the front side in filter membranous layer heat seal portion, and the second caudacoria comprises the ring part in heat seal portion on rear side of connection filter membranous layer and is connected to the connecting portion on front side of outlet from the rear side in filter membranous layer heat seal portion;
Described first caudacoria, form closed filtration back cavity between the second caudacoria and filter membranous layer, outlet is parallel to filter membranous layer and arranges and be opened on filtration back cavity.
2. side opening according to claim 1 three layers of PVC soft shell filter, is characterized in that: described first cephacoria and the second cephacoria are the common film of one deck.
3. side opening according to claim 1 three layers of PVC soft shell filter, is characterized in that: the part that described first cephacoria and the second caudacoria exceed filter course heat seal portion forms outer wing, is connected with the common heat seal of the outer rim of the first caudacoria.
4. side opening according to claim 1 three layers of PVC soft shell filter, it is characterized in that: described inlet tube is square, one end vertical connection of inlet tube filters ante-chamber, and the other end opening direction of inlet tube is parallel to filter membranous layer, and contrary with outlet opening direction.
5. side opening according to claim 1 three layers of PVC soft shell filter, is characterized in that: be provided with bracing frame between described first caudacoria and filter membranous layer.
6. according to the three layers of PVC soft shell filter of the side opening in claim 1 ~ 4 described in any one, it is characterized in that: described first cephacoria, the second cephacoria, the first caudacoria, the second caudacoria are that PVC material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520478208.4U CN204766754U (en) | 2015-07-03 | 2015-07-03 | Side opening three -layer PVC sabot filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520478208.4U CN204766754U (en) | 2015-07-03 | 2015-07-03 | Side opening three -layer PVC sabot filter |
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| Publication Number | Publication Date |
|---|---|
| CN204766754U true CN204766754U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520478208.4U Active CN204766754U (en) | 2015-07-03 | 2015-07-03 | Side opening three -layer PVC sabot filter |
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| CN (1) | CN204766754U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998307A (en) * | 2015-07-03 | 2015-10-28 | 南京双威生物医学科技有限公司 | Laterally-bored three-layer PVC soft-shelled filter |
-
2015
- 2015-07-03 CN CN201520478208.4U patent/CN204766754U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998307A (en) * | 2015-07-03 | 2015-10-28 | 南京双威生物医学科技有限公司 | Laterally-bored three-layer PVC soft-shelled filter |
| CN104998307B (en) * | 2015-07-03 | 2018-05-11 | 南京双威生物医学科技有限公司 | Three layers of PVC soft shell filters of side opening |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |