CN203053746U - Puncture sampling needle for preventing puncture deflection and liquid sticking - Google Patents
Puncture sampling needle for preventing puncture deflection and liquid sticking Download PDFInfo
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- CN203053746U CN203053746U CN 201320020410 CN201320020410U CN203053746U CN 203053746 U CN203053746 U CN 203053746U CN 201320020410 CN201320020410 CN 201320020410 CN 201320020410 U CN201320020410 U CN 201320020410U CN 203053746 U CN203053746 U CN 203053746U
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- sampling needle
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Abstract
The utility model discloses a puncture sampling needle for preventing puncture deflection and liquid sticking, and belongs to a sampling needle for liquid analysis. The puncture sampling needle comprises a sampling needle body, wherein a central through hole is formed inside the sampling needle body; a needle tip of the sampling needle body is a cone; the area of the bottom of the cone is greater than that of the cross section of the sampling needle body; an inclined through hole communicated with the central through hole is also formed in the side surface of the needle tip of the sampling needle body; and the aperture of the inclined through hole is smaller than that of the central through hole. The needle tip of the sampling needle body is conical, so that parts of the sampling needle are uniformly stressed during puncture, and a phenomenon of deflection is avoided; furthermore, the inclined through hole and the central through hole are not positioned on the same straight line, and the aperture of the inclined through hole is smaller than that of the central through hole, so that the surface tension of sampled liquid can be prevented; a phenomenon of liquid sticking to the needle tip of the sampling needle is avoided; and therefore, precision control over quantitative collection and output of sample liquid is realized.
Description
Technical field
The utility model relates to a kind of sampling needle for liquid acquisition, and in particular, the utility model relates generally to a kind of be used to preventing from puncturing deflection and hang the puncture sampling needle of liquid.
Background technology
At present, when carrying out the sampling analysis of blood equal samples, the puncture needle shape of employing, different sizes, its basic function all are for puncture container and sampling; But plug is vertically thrust in assurance during for puncture, and not occurring hanging the liquid phenomenon after the sampling and quantitatively exporting does not have high requirement, often has deviation because the phenomenon that has extension liquid water droplet causes the sampling amount of solution; And in automatic sampling process, because the operation that sample tube will be taken out, be put into, require under the consistent use prerequisite in output quantity after the sampling, guarantee vertically to thrust plug during aforementioned puncture, two indexs that do not occur hanging liquid after the sampling and quantitatively export just seem particularly important, and the puncture sampling needle of existing structure can not reach the desired effect of aforementioned index substantially, therefore is necessary the structure of puncture sampling needle is made further improvement.
The utility model content
One of the purpose of this utility model is at above-mentioned deficiency, provide a kind of be used to preventing from puncturing deflection and hang the puncture sampling needle of liquid, can not vertically thrust plug with sampling needle sampling in the expectation solution prior art, and be prone to technical matterss such as hanging liquid water droplet phenomenon after the sampling.
For solving above-mentioned technical matters, the utility model by the following technical solutions:
Provided by the utility model a kind of be used to preventing from puncturing deflection and hang the puncture sampling needle of liquid, comprise the sampling needle body, the inside of described sampling needle body is provided with central through hole, and the needle point of described sampling needle body is cone, and the area of described cone base equals sampling needle body cross-section area; The described needle point side that is cone also is provided with the oblique through hole that is connected with central through hole, and the aperture of described oblique through hole is less than the aperture of central through hole.
As preferably, further technical scheme is: described sampling needle body is the circular cylindrical shape body, and needle point is cone.
Further technical scheme is: between the axis of described oblique through hole and the axis of central through hole, spend greater than 90 towards the angle of sampling needle body tip.
Further technical scheme is: also be provided with connecting thread on the end of described sampling needle body.
Compared with prior art, one of the beneficial effects of the utility model are: the shape that is set to centrum by the needle point of sampling needle body, make sampling needle needle point each several part in piercing process stressed evenly, avoid taking place deflection, simultaneously since oblique through hole and central through hole not on same straight line, and the aperture of oblique through hole is less than central through hole, therefore can overcome the surface tension of sampling liquid, avoid the sampling needle needle point liquid phenomenon to occur hanging, thereby realize the accurate control to sample liquid quantitative collection and output, simultaneously provided by the utility model a kind of be used to preventing from puncturing deflection and to hang the puncture sampling needle of liquid simple in structure, and especially be suitable for using at automatic sample analysis equipment, and be suitable for suitability for industrialized production, be easy to promote.
Description of drawings
Fig. 1 is for being used for the structural representation of an embodiment of explanation the utility model;
Among the figure, 1 is that through hole centered by the sampling needle body, 11,12 is that needle point, 13 is that oblique through hole, 14 is connecting thread.
Embodiment
Below in conjunction with accompanying drawing the utility model is further elaborated.
With reference to shown in Figure 1, an embodiment of the present utility model is a kind of be used to preventing from puncturing deflection and hang the puncture sampling needle of liquid, wherein need to comprise sampling needle body 1, and also need in the inside of sampling needle body 1 central through hole 11 to be set, also need simultaneously the needle point 12 of sampling needle body 1 is set to cone, and make the area of this cone base equal sampling needle body 1 cross-sectional area; And aforementioned needle point 12 sides that are cone also are provided with the oblique through hole 13 that is connected with central through hole 11, what is more important, the aperture of aforementioned oblique through hole 13 needs the aperture less than central through hole 11, in the present embodiment, the aforesaid needle point 12 that is cone can be the positive centrum of arbitrary form, positive rectangular pyramid for example, hexagonal pyramid etc., when the purpose of employing centrum needle point 12 is thrust the test tube plug for making sampling needle, the each several part of needle point 12 is force-applied evenly, avoid taking place deflection, the aperture of oblique through hole 13 is the surface tension that overcomes sample liquid less than the purpose in central through hole 11 apertures, avoid the sampling back to form at needle point 12 and hang liquid, oblique through hole 13 and central through hole 11 be on same straight line in addition, the then more difficult generation of aforesaid surface tension of liquid.
Present embodiment in actual use, sample liquid behind the mixing is under the effect of accurate quantitative sampling pump, implement sampling by oblique through hole 13 and 11 pairs of sample liquids of intermediate throughholes of arranging on the needle point 12 of sampling needle body 1, after finishing, sampling by accurate quantitative sampling pump the sample liquid of having got in the sampling needle body 1 is exported again, be that oblique through hole 13 on the needle point 12 is under the effect of accurate quantitative sampling pump, make sample liquid overcome the surface tension of self and not form at needle point 12 and hang drops, thereby realized accurate sampling and the output of sample liquid.
In addition, for ease of the assembling of sampling needle body 1 end, and keep the interior sealing of pipeline, preferably set up connecting thread 15 at the end of sampling needle body 1 again.
Again with reference to shown in Figure 1, be used for the embodiment that the technical solution problem is more preferably at the utility model, the inventor is with reference to the conventional shape of puncture sampling needle in the prior art, above-mentioned sampling needle body 1 is set to the circular cylindrical shape body, needle point 12 is set to cone, adopt structure in the present embodiment, can reduce the resistance of sampling needle body 1 in piercing process, to increase the smoothness of sampling operation.
Again according to another embodiment of the present utility model, the position of above-mentioned oblique through hole 13 is configured such that between the axis of its axis and central through hole 11, angle towards sampling needle body 1 end is spent greater than 90, and namely oblique through hole 13 is outside divergent shape with the axle side pass of central through hole 11.
Except above-mentioned, also need to prove " embodiment ", " another embodiment " that speak of in this manual, " embodiment " etc., refer to concrete feature, structure or the characteristics described in conjunction with this embodiment and be included among at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in instructions.Furthermore, when describing a concrete feature, structure or characteristics in conjunction with arbitrary embodiment, what advocate is to realize that in conjunction with other embodiment this feature, structure or characteristics also drop in the scope of the present utility model.
Although be described with reference to the utility model of a plurality of explanatory embodiment of the present utility model here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and embodiment will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes also will be tangible.
Claims (4)
1. deflection and hang the puncture sampling needle of liquid of being used for preventing puncturing, comprise sampling needle body (1), the inside of described sampling needle body (1) is provided with central through hole (11), it is characterized in that: the needle point (12) of described sampling needle body (1) is cone, and the area of described cone base equals sampling needle body (1) cross-sectional area; Described needle point (12) side that is cone also is provided with the oblique through hole (13) that is connected with central through hole (11), and the aperture of described oblique through hole (13) is less than the aperture of central through hole (11).
2. according to claim 1 be used to preventing from puncturing deflection and hang the puncture sampling needle of liquid, it is characterized in that: described sampling needle body (1) is the circular cylindrical shape body, and needle point (12) is cone.
3. according to claim 1 be used to preventing from puncturing deflection and hang the puncture sampling needle of liquid, it is characterized in that: between the axis of the axis of described oblique through hole (13) and central through hole (11), spend greater than 90 towards the angle that sampling needle body (1) is terminal.
4. according to claim 1 or 3 described be used to preventing from puncturing deflection and hang the puncture sampling needle of liquid, it is characterized in that: also be provided with connecting thread (15) on the end of described sampling needle body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320020410 CN203053746U (en) | 2013-01-16 | 2013-01-16 | Puncture sampling needle for preventing puncture deflection and liquid sticking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320020410 CN203053746U (en) | 2013-01-16 | 2013-01-16 | Puncture sampling needle for preventing puncture deflection and liquid sticking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203053746U true CN203053746U (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320020410 Expired - Fee Related CN203053746U (en) | 2013-01-16 | 2013-01-16 | Puncture sampling needle for preventing puncture deflection and liquid sticking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203053746U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111122239A (en) * | 2018-10-31 | 2020-05-08 | 深圳市帝迈生物技术有限公司 | Sampling needle and detection device |
| CN114323783A (en) * | 2020-09-30 | 2022-04-12 | 深圳市帝迈生物技术有限公司 | Sampling method, sampling assembly and sample analyzer |
-
2013
- 2013-01-16 CN CN 201320020410 patent/CN203053746U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111122239A (en) * | 2018-10-31 | 2020-05-08 | 深圳市帝迈生物技术有限公司 | Sampling needle and detection device |
| CN114323783A (en) * | 2020-09-30 | 2022-04-12 | 深圳市帝迈生物技术有限公司 | Sampling method, sampling assembly and sample analyzer |
| CN114323783B (en) * | 2020-09-30 | 2023-11-24 | 深圳市帝迈生物技术有限公司 | Sampling method, sampling assembly and sample analyzer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20190116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |