CN202974716U - Double-layer sample suction needle - Google Patents
Double-layer sample suction needle Download PDFInfo
- Publication number
- CN202974716U CN202974716U CN 201220712558 CN201220712558U CN202974716U CN 202974716 U CN202974716 U CN 202974716U CN 201220712558 CN201220712558 CN 201220712558 CN 201220712558 U CN201220712558 U CN 201220712558U CN 202974716 U CN202974716 U CN 202974716U
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- CN
- China
- Prior art keywords
- needle
- double
- needle tube
- tube
- sample suction
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- Expired - Lifetime
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Abstract
The utility model provides a double-layer sample suction needle and effectively solves the problem that the sample suction needle penetrates through a sealing container and difficultly extracts the liquid during sampling in the prior art. The double-layer sample suction needle comprises an inner needle tube and an outer needle tube which is sleeved at the outer side of the inner needle tube, wherein a cavity is formed between the outer needle tube and the inner needle tube. The double-layer sample suction needle has the advantages that the influence of air pressure on the liquid extraction process is effectively lightened, so that the liquid extraction is convenient.
Description
Technical field
The utility model relates to a kind of sampling apparatus, particularly a kind of double-deck suction needle.
Background technology
At the micro substance detection field, microsampling is an important process, and suction needle is a kind of common device that is used for the micro liquid sampling, is applicable to the checkout equipments such as Biochemical Analyzer, cellanalyzer.The suction needle of prior art is a superfine needle tubing, is used in conjunction with syringe (particularly fixed-quantity injector), can extract micro liquid.Because the needle tubing of suction needle is superfine, when thrusting airtight container (as reagent bottle), needle point carries out liquid sample when processing, and airtight container is close at its needle tubing edge, and without Air infitration, due to the effect of external container air pressure, the suction needle extracting liquid is very difficult.
The utility model content
The utility model provides a kind of double-deck suction needle, efficiently solves extracting liquid hard problem when in prior art, suction needle thrusts the airtight container sampling.
For realizing above purpose, the utility model discloses following technical scheme:
A kind of double-deck suction needle comprises inner needle tube and the outer needle tubing that is enclosed within the described inner needle tube outside, forms a cavity between described outer needle tubing and described inner needle tube.
Further, the lower end of described inner needle tube is hooked needle point, and its upper end is provided with a holder hand, is provided with a needle tube joint in described holder hand, is used for described inner needle tube is connected to a syringe adapter.
Further, be provided with an above through hole near described needle point place on the sidewall of described outer needle tubing.
Further, be provided with an above through hole near described holder hand place on the sidewall of described outer needle tubing.
Further, the junction of described outer needle tubing lower end and described inner needle tube forms an annular slope.
The utility model has the advantage of, a kind of double-deck suction needle is provided, effectively alleviated the impact of air pressure on the Liquid extracting process, make Liquid extracting convenient.
Description of drawings
Fig. 1 is structural representation of the present utility model;
The number in the figure explanation:
1, inner needle tube, 2, outer needle tubing, 3, cavity, 4, the holder hand, 5, needle tube joint;
11, needle point, 12, pin hole;
21, through hole, 22, through hole, 23, annular slope.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing, those skilled in the art is more clearly understood how to put into practice the utility model.Although should be appreciated that in conjunction with its preferred specific embodiments and described the utility model, these embodiments are just set forth, rather than limit scope of the present utility model.
Fig. 1 is structural representation of the present utility model, be illustrated in figure 1 as a kind of double-deck suction needle, comprise inner needle tube 1 and the outer needle tubing 2 that is enclosed within inner needle tube 1 outside, form a cavity 3 between outer needle tubing 2 and inner needle tube 1, its cross-sectional area is very little, as long as guarantee that air can pass through.
The lower end of inner needle tube 1 is a hooked needle point 11, and needle point 11 is provided with a pin hole 12.Needle point 11 is crotch-shaped, makes needle point when thrusting airtight container (this container closure place be rubber plug), and its pin hole 12 can be over against the rubber plug of airtight container, prevent the rubber plug breakage Partial Blocking pin hole 12,
The upper end of inner needle tube 1 is provided with a holder hand 4, is provided with a needle tube joint 5 in holder hand 4, is used for inner needle tube 1 is connected to a syringe adapter (not shown).
Be provided with an above through hole 21 near needle point 11 places on the sidewall of outer needle tubing 2, be provided with an above through hole 22 near holder hand 4 places on the sidewall of outer needle tubing 2, thereby make air be circulated, guarantee that air can enter sealed container interior by cavity 3.In case of necessity, through hole 21 can also connect a conduit (not shown), and being used to provides air or wash liquid is provided in cavity 3.The utility model at work, conduit can be used for the air pressure balance guarantee that airtight container is inside and outside; After end-of-job, conduit can so that inner needle tube 1, outer needle tubing 2 and both between cavity 3 clean up.
The junction of outer needle tubing 2 lower ends and inner needle tube 1 forms an annular slope 23, and this annular slope 23 is made for smooth metal material, guarantee outer needle tubing 2 and inner needle tube 1 can together with successfully thrust in the airtight container (not shown).
The utility model at work, the needle point 11 on inner needle tube 1 top is thrust airtight container, the through hole 22 of outer needle tubing 2 also enters sealed container interior, thereby make the air in the airtight container external world import airtight containers by the through hole 21 on outer needle tubing 2, cavity 3, through hole 22 successively, make the airtight container inside and outside air pressure balance.Then, coordinate with inner needle tube 1 with syringe, extract the liquid in airtight container, external pressure can not produce any negative effect to extraction process, makes extraction process be more prone to.
The above is only preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the 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 (5)
1. a double-deck suction needle, is characterized in that, comprises inner needle tube and the outer needle tubing that is enclosed within the described inner needle tube outside, forms a cavity between described outer needle tubing and described inner needle tube.
2. double-deck suction needle as claimed in claim 1, is characterized in that, the lower end of described inner needle tube is hooked needle point, and its upper end is provided with a holder hand, is provided with a needle tube joint in described holder hand, is used for described inner needle tube is connected to a syringe adapter.
3. double-deck suction needle as claimed in claim 2, is characterized in that, is provided with an above through hole near described needle point place on the sidewall of described outer needle tubing.
4. double-deck suction needle as claimed in claim 2, is characterized in that, is provided with an above through hole near described holder hand place on the sidewall of described outer needle tubing.
5. double-deck suction needle as described in any one in claim 1-4, is characterized in that, the junction of described outer needle tubing lower end and described inner needle tube forms an annular slope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712558 CN202974716U (en) | 2012-12-21 | 2012-12-21 | Double-layer sample suction needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220712558 CN202974716U (en) | 2012-12-21 | 2012-12-21 | Double-layer sample suction needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202974716U true CN202974716U (en) | 2013-06-05 |
Family
ID=48515774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220712558 Expired - Lifetime CN202974716U (en) | 2012-12-21 | 2012-12-21 | Double-layer sample suction needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202974716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884535A (en) * | 2012-12-21 | 2014-06-25 | 上海磐合科学仪器股份有限公司 | Double-layer sample-sucking needle |
-
2012
- 2012-12-21 CN CN 201220712558 patent/CN202974716U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884535A (en) * | 2012-12-21 | 2014-06-25 | 上海磐合科学仪器股份有限公司 | Double-layer sample-sucking needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 201108 Shanghai Minhang District Jin Road, No. 6, building 2, room B81, building 4299 Patentee after: SHANGHAI IMPACT SCIENTIFIC INSTRUMENT Co.,Ltd. Address before: 201100 room first, building 18-30, No. 88, min Lu, 245 min Road, Shanghai, Minhang District Patentee before: Shanghai Impact Scientific Instrument Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |