CN207472605U - Liquid sample filters extraction apparatus - Google Patents
Liquid sample filters extraction apparatus Download PDFInfo
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- CN207472605U CN207472605U CN201721221486.7U CN201721221486U CN207472605U CN 207472605 U CN207472605 U CN 207472605U CN 201721221486 U CN201721221486 U CN 201721221486U CN 207472605 U CN207472605 U CN 207472605U
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- liquid sample
- extraction apparatus
- conduit
- impurity removal
- membrane filtration
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Abstract
The utility model discloses a kind of liquid samples to filter extraction apparatus.Liquid sample filtering extraction apparatus provided by the utility model is included through conduit impurity removal means connected in sequence, membrane filtration device and negative pressure device；The negative pressure device for electric installation by driving.Liquid sample provided by the utility model filters extraction apparatus, can solve in legal medical expert's case large volume liquid sample (such as：Watery blood, snow-broth, liquid detergent, hand cleanser, urine etc.) extraction is difficult, transport is difficult, preserves difficult problem, and it successfully cracks and races against time for case.
Description
Technical field
The utility model belongs to Forensic biological evidence extractive technique field, is related to a kind of liquid sample filtering extraction apparatus.
Background technology
With the enhancing of investigator's material evidence extraction consciousness in handling a case, the sample extracted is varied, in addition to blood cake, saliva
Except liquid spot, seminal stain, clothing, cutter, club etc. sample, the samples such as hand cleanser, liquid detergent, watery blood, snow-broth, urine water, rainwater
Also commonplace, often capacity is more (tens milliliters even thousands of milliliters) for this liquid sample, during scene inspection not easily collecting,
It is not easy to transport, even in laboratory inspection, it is also desirable to be shifted, be centrifuged repeatedly repeatedly with eppendor test tubes (1.5ml),
Sediment can be collected and carry out DNA inspections again, it is very cumbersome, time-consuming.
The inspection of large volume liquid sample is always the problem that medical law fields are examined, wherein the cell component concentration contained
It is low, how in the solution collected inside of so large volume to free cell therein and DNA inspections are carried out, this is to forensic dna people
Member is always problem, especially when encountering in liquid sample containing bleaching agent, humus when PCR inhibitors, even more in hardly possible
Add difficulty.Therefore, it is badly in need of a kind of large volume liquid sample filtering extractive technique examined suitable for legal medical expert's case of research and development.According to document report
Road, the extraction apparatus that MSI companies of the U.S. developed one kind and be called " M-Vac " system in 2009, the extraction apparatus are exactly a kind of " wet true
The biological material collection system of sky " technology, the technical price is very expensive (each 1000 yuan of sample), it is difficult to which base is public at home
Peace organ is widely popularized.
Utility model content
The purpose of this utility model is to provide one kind can filter the biological cast-off cells of extraction from large volume liquid sample
Mancarried device (be known as liquid sample filtering extraction apparatus), it is difficult to solve to extract biological evidence from large volume liquid sample
The problem of.
Liquid sample provided by the present invention filters extraction apparatus, including sequentially connected impurity removal means, membrane filtration
Device and negative pressure device；It is connected between the impurity removal means and the membrane filtration device by conduit one；The filter
It is connected between film filter and negative pressure device by conduit two；The negative pressure device for electric installation by driving.
Wherein, the impurity removal means are equipped with the impurity removal cylinder of cross partition for a centre.The impurity is gone
Except the outer diameter of cylinder is 0.9cm-1.1cm, internal diameter is 0.6cm-0.8cm (specific such as outer diameter 1cm, internal diameter 0.7cm).
The impurity removal means are used for impurity of the diameter more than 0.5cm in barrier liquid sample and enter the membrane filtration
Device.
The membrane filtration device includes filtration barrel body and at least three layers of filter membrane being arranged in the filtration barrel body.It is described
The outer diameter of filtration barrel body is 3-3.5cm, and internal diameter is 2-2.5cm (specific such as outer diameter 3cm, internal diameter 2cm).The filtration barrel body is by upper
Cylinder and lower shell fasten, and are specifically such as connected through a screw thread, and are convenient for the replacement of filter membrane in this way.In the membrane filtration device
Filter membrane aperture between 100 μm -200 μm, thickness is at 0.15mm-0.25mm (such as thickness 0.2mm).
The membrane filtration device is used for the biological cast-off cells being enriched in the liquid sample.
The negative pressure device is used to generate negative pressure so that liquid sample passes sequentially through the impurity removal means and the filter
Film filter, the biological cell in final liquid sample are enriched on filter membrane.
In one embodiment of the invention, the negative pressure device is specially the production of Jiangsu Jiang Hang Medical Devices Co., Ltd
Product identification be 1604010490 product.
The conduit one, the conduit two intracavity diameter be 3mm-5mm.
Connection between the conduit one, the conduit two and each component is detachable connection.
The impurity removal cylinder of the impurity removal means and cross partition are made of plastics；The membrane filtration dress
Filtration barrel body in putting is made of plastics；The conduit one and the conduit two are hose made of plastics.
Liquid sample filtering extraction apparatus provided by the utility model is portable, and quality is less than 18kg, convenient for showing in case
Field carries.
Liquid sample provided by the utility model filters extraction apparatus, can solve in legal medical expert's case large volume liquid sample (such as：
Watery blood, snow-broth, liquid detergent, hand cleanser, urine etc.) extraction is difficult, transport is difficult, preserves difficult problem, and it successfully cracks and strives for for case
Time.
Description of the drawings
Fig. 1 is the module diagram that liquid sample provided by the utility model filters extraction apparatus.
Fig. 2 is that the structure diagram of liquid sample provided by the utility model filtering extraction apparatus (does not show negative pressure device
3)。
Fig. 3 is the structure diagram of impurity removal means.
Fig. 4 is the structure diagram of membrane filtration device.A is the overall structure diagram of membrane filtration device；B and C are
The structure diagram of membrane filtration device after fractionation.
Specific embodiment
Experimental method used in following embodiments is conventional method unless otherwise specified.
The materials, reagents and the like used in the following examples is commercially available unless otherwise specified.
Schematic diagram as shown in Figure 1, liquid sample provided by the utility model filter extraction apparatus, it includes sequentially connected
Impurity removal means 1, membrane filtration device 2 and negative pressure device 3；By leading between impurity removal means 1 and membrane filtration device 2
Pipe 1 is connected；It is connected between membrane filtration device 2 and negative pressure device 3 by conduit 25；Negative pressure device 3 is by for electric installation (figure
In do not show) driving.The structure diagram of Fig. 2 liquid sample filtering extraction apparatus provided by the utility model (does not show negative pressure
Device 3).
In above-described embodiment, the impurity that impurity removal means 1 are equipped with cross partition for a centre removes cylinder.
Wherein, the outer diameter of the impurity removal cylinder is 0.9cm-1.1cm, and internal diameter is (specific such as outer diameter for 0.6cm-0.8cm
1cm, internal diameter 0.7cm).
Impurity removal means 1 are used for impurity of the diameter more than 0.5cm in barrier liquid sample and are filled into the membrane filtration
It puts.Due to being usually mixed with the sundries such as stone, branch in live sample, in order to avoid these impurity block filter membrane, therefore, the present invention
There is provided liquid sample filtering extraction apparatus one of barrier (i.e. impurity removal means 1) is designed before membrane filtration device 2, with
Impurity of the diameter more than 0.5cm enters membrane filtration device 2 in the blocking liquid sample.
Fig. 3 is the structure diagram of impurity removal means.
In above-described embodiment, membrane filtration device 2 includes filtration barrel body and be arranged in the filtration barrel body at least three
Layer filter membrane.
Wherein, the outer diameter of the filtration barrel body is 3.0-3.5cm, and internal diameter is (specific such as outer diameter 3cm, internal diameter for 2-2.5cm
2cm)。
The filtration barrel body includes upper shell and lower shell, and the upper shell and the lower shell is are detachably connected (such as
It is connected through a screw thread), it is convenient for the replacement of filter membrane in this way.
The aperture of filter membrane in membrane filtration device 2 between 100 μm -200 μm, thickness in 0.15mm-0.25mm (such as
Thickness 0.2mm).
Membrane filtration device 2 is used for the biological cast-off cells being enriched in the liquid sample.
Fig. 4 is the structure diagram of membrane filtration device.
In above-described embodiment, negative pressure device 3 is specially that the product identification of Jiangsu Jiang Hang Medical Devices Co., Ltd production is
1604010490 product.Negative pressure device 3 is used to generate negative pressure so that liquid sample passes sequentially through impurity removal means 1 and filter membrane
Filter device 2, the biological cell in final liquid sample are enriched on filter membrane.
In above-described embodiment, the intracavity diameter of conduit 1 and conduit 25 is 3mm-5mm.Conduit 1 and conduit 25 with
Connection between each component is detachable connection.
In above-described embodiment, the impurity removal cylinder of impurity removal means 1 and cross partition are made of plastics.Filter membrane
Filtration barrel body in filter device 2 is made of plastics.Conduit 1 and conduit 25 are hose made of plastics.
Liquid sample filtering extraction apparatus provided by the utility model is that one kind can filter extraction life from liquid sample
The mancarried device of object cast-off cells, quality is less than 18kg, convenient for being carried in criminal-scene.
Liquid sample provided by the utility model filters extraction apparatus, and liquid sample is fallen it by membrane filtration under negative pressure
In most of moisture, retention sediment therein on filter membrane, this method other than the use of laboratory in addition to can also allow for taking
Band, can in case onsite application, on the one hand solve liquid sample shifted, be centrifuged repeatedly repeatedly by test tube, complex steps, consumption
When problem；On the other hand solve the problems, such as that the extraction of such sample is difficult, transport is difficult, it is difficult to preserve.Liquid provided by the utility model
Physical examination material filtering extraction apparatus effectively can be cracked successfully for case races against time.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacement, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. liquid sample filters extraction apparatus, it is characterised in that：It includes sequentially connected impurity removal means, membrane filtration device
And negative pressure device；
It is connected between the impurity removal means and the membrane filtration device by conduit one；
It is connected between the membrane filtration device and the negative pressure device by conduit two；
The negative pressure device for electric installation by driving.
2. liquid sample according to claim 1 filters extraction apparatus, it is characterised in that：During the impurity removal means are one
Between be equipped with cross partition impurity removal cylinder.
3. liquid sample according to claim 2 filters extraction apparatus, it is characterised in that：The outer diameter of the impurity removal cylinder
For 0.9cm-1.1cm, internal diameter 0.6cm-0.8cm.
4. the liquid sample filtering extraction apparatus according to claims 1 or 2 or 3, it is characterised in that：The membrane filtration device
Including filtration barrel body and at least three layers of filter membrane being arranged in the filtration barrel body.
5. liquid sample according to claim 4 filters extraction apparatus, it is characterised in that：The outer diameter of the filtration barrel body is
3.0-3.5cm, internal diameter 2.0-2.5cm.
6. liquid sample according to claim 4 filters extraction apparatus, it is characterised in that：The filtration barrel body by upper shell and
Lower shell fastens.
7. liquid sample according to claim 4 filters extraction apparatus, it is characterised in that：Filter in the membrane filtration device
The aperture of film is between 100 μm -200 μm, and thickness is in 0.15mm-0.25mm.
8. liquid sample according to claim 1 filters extraction apparatus, it is characterised in that：The conduit one and the conduit two
Intracavity diameter be 3mm-5mm.
9. liquid sample according to claim 1 filters extraction apparatus, it is characterised in that：The conduit one and the conduit two
Connection between each component is detachable connection.
10. liquid sample according to claim 4 filters extraction apparatus, it is characterised in that：The impurity removal means it is miscellaneous
Matter removes cylinder and cross partition is made of plastics；Filtration barrel body in the membrane filtration device is made of plastics；Institute
It is hose made of plastics to state conduit one and the conduit two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721221486.7U CN207472605U (en) | 2017-09-22 | 2017-09-22 | Liquid sample filters extraction apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721221486.7U CN207472605U (en) | 2017-09-22 | 2017-09-22 | Liquid sample filters extraction apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN207472605U true CN207472605U (en) | 2018-06-08 |
Family
ID=62269831
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721221486.7U Active CN207472605U (en) | 2017-09-22 | 2017-09-22 | Liquid sample filters extraction apparatus |
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| CN (1) | CN207472605U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444338A (en) * | 2018-11-16 | 2019-03-08 | 天津大学 | A kind of test multiple material and refrigerant lubricating oil compatibility test system and method |
-
2017
- 2017-09-22 CN CN201721221486.7U patent/CN207472605U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444338A (en) * | 2018-11-16 | 2019-03-08 | 天津大学 | A kind of test multiple material and refrigerant lubricating oil compatibility test system and method |
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