CN201903464U - Sampling needle of analyzer - Google Patents
Sampling needle of analyzer Download PDFInfo
- Publication number
- CN201903464U CN201903464U CN2010206657739U CN201020665773U CN201903464U CN 201903464 U CN201903464 U CN 201903464U CN 2010206657739 U CN2010206657739 U CN 2010206657739U CN 201020665773 U CN201020665773 U CN 201020665773U CN 201903464 U CN201903464 U CN 201903464U
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- CN
- China
- Prior art keywords
- sampling
- sampling probe
- sampling needle
- test tube
- needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a sampling needle of an analyzer for various types of liquid, in particular to a sampling needle of a blood analysis and detection instrument. The side face of the sampling needle is provided with at least two slots, and the slots are uniformly distributed on the periphery of a needle tube and are long enough to be still exposed out of a testing rubber plug when the tip of the sampling needle punctures into a test tube and close to the bottom of the test tube. By adopting the structure, the slots on the sampling needle cannot be easily blocked by rubber of the rubber plug, the probability of simultaneous blockage of two suction holes can be greatly reduced, the sampling accuracy and reliability of the sampling needle can be greatly improved, and errors in analysis results of the analyzer caused by inaccurate sampling volumes can be avoided.
Description
Technical field
The utility model relates to the sampling probe that is used for all kinds of fluid analysis instruments, especially the sampling probe of blood analysis detecting instrument.
Background technology
In various fluid analyte meters, the liquid sample to be checked in the test tube must be drawn on request micro-sample and be sent in the analyser and analyze, the accuracy of sampling amount is related to precision of analysis.
In various fluid analyte meters, sampling probe generally all is to receive on the syringe of an accurate control with the tubule road, accurately controls the stroke of syringe piston, when sample to be checked is contained in the unlimited test tube, the sample size that sampling probe is drawn can compare accurately, and error can be controlled in 2%.But, when sample is contained in the test tube, and when using rubber stopper seal, in vitro might produce different negative pressure or malleation, especially hospital uses vacuum test tube extraction patients'blood to inspect by ready samples as sample, this sample is because the amount of sample drawn is different, invisible spectro negative pressure is just different, and sometimes, the blood sample of extraction may be sub-divided in several censorships respectively in vitro, add rubber plug after the packing, like this, in vitro will produce malleation, have the sample tube of different negative pressure or malleation to be put in the analyser such inside, when extracting micro-sample, just be easy to generate the inaccurate problem of sampling amount.
At present, in various blood analysers, in order to get rid of the inconsistent influence of pressure in vitro to sampling amount, generally offer a groove in the sampling probe side, when sampling probe thrusts when taking a sample in the test tube, the groove of sampling probe side can the invisible spectro pressure of balance, but,, find because different rubber plugs through test repeatedly, elasticity is different, sometimes, the groove that leave the sampling probe side can be caused by the rubber shutoff degree varies of rubber plug, like this, the error of sampling amount is just bigger, can have a strong impact on the test sample result.
In addition, majority is only opened a suction sample hole on the existing sampling probe, and sometimes, rubber grain is blocked and inhaled the sample hole, and suction amount can produce gross error, even inhales less than sample.
Summary of the invention
The utility model provides a kind of analyzer sample pin that can effectively improve sampling reliability and accuracy.
A kind of sampling probe of analyser offers the groove more than at least two in the side of sampling probe, when the length of set groove should guarantee that the sampling probe spine is gone into test tube near the bottom, fluting also was exposed at test tube rubber plug outside.
Further, the above-mentioned position of offering groove is to be evenly distributed on the circumference of needle tubing.
On the sampling syringe needle, be provided with plural at least inlet hole, the position of opening of set inlet hole is no more than two in same cross section.
Structure of the present utility model, make the groove on the sampling probe be not easy to be blocked by the rubber of rubber plug, the probability that two inlet holes are blocked simultaneously is also very little, like this, the accuracy and the reliability of sampling probe sampling improve greatly, can prevent because of the inaccurate error that causes the instrumental analysis result of sampling amount.
Description of drawings
Fig. 1: sampling probe structural representation.
Fig. 2: the partial enlarged drawing that is the perforate I on the sampling probe among Fig. 1.
Fig. 3: be sampling probe A-A sectional view among Fig. 1.
Fig. 4: be among Fig. 1 on the sampling probe fluting II partial enlarged drawing.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing 1 ~ 4.
Referring to accompanying drawing 1 ~ 4, have two grooves in the side of sampling probe, the position of the groove of being offered is to be evenly distributed on the circumference of needle tubing, when the length of fluting should guarantee that the sampling probe spine is gone into test tube near the bottom, fluting also was exposed at test tube rubber plug outside.On the sampling syringe needle, be provided with two inlet holes, unaffected for the intensity that makes sampling probe, the perforate of same cross section is not above two.Structure of the present utility model, make the groove on the sampling probe be difficult for being blocked by the rubber of rubber plug, the probability that two inlet holes are blocked simultaneously is also very little, and the accuracy and the reliability of sampling probe sampling improve greatly, can prevent because of the inaccurate error that causes the instrumental analysis result of sampling amount.
In addition, also can offer the groove more than two in the side of sampling probe, the position of the groove of being offered is to be evenly distributed on the circumference of needle tubing.On the sampling syringe needle, be provided with plural inlet hole, unaffected for the intensity that makes sampling probe, the perforate of same cross section is not above two.
Claims (3)
1. the sampling probe of an analyser is characterized in that: offer the groove more than two in the side of sampling probe, when the length of set groove should guarantee that the sampling probe spine is gone into test tube near the bottom, slot and also be exposed at test tube rubber plug outside at least.
2. sampling probe as claimed in claim 1 is characterized in that: the position of the groove of offering is to be evenly distributed on the circumference of needle tubing.
3. sampling probe as claimed in claim 1 is characterized in that: on the sampling syringe needle, be provided with plural at least inlet hole, the position of opening of set inlet hole is no more than two in same cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206657739U CN201903464U (en) | 2010-12-17 | 2010-12-17 | Sampling needle of analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206657739U CN201903464U (en) | 2010-12-17 | 2010-12-17 | Sampling needle of analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201903464U true CN201903464U (en) | 2011-07-20 |
Family
ID=44274058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206657739U Expired - Lifetime CN201903464U (en) | 2010-12-17 | 2010-12-17 | Sampling needle of analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201903464U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102805627A (en) * | 2012-07-29 | 2012-12-05 | 宁波市鄞州青林医疗器械技术咨询有限公司 | Splash-proof double-channel sampling needle head of blood collection tube |
| CN102809527A (en) * | 2012-07-29 | 2012-12-05 | 宁波市鄞州青林医疗器械技术咨询有限公司 | Intubation tube type splash-proof vacuum blood sedimentation tube |
-
2010
- 2010-12-17 CN CN2010206657739U patent/CN201903464U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102805627A (en) * | 2012-07-29 | 2012-12-05 | 宁波市鄞州青林医疗器械技术咨询有限公司 | Splash-proof double-channel sampling needle head of blood collection tube |
| CN102809527A (en) * | 2012-07-29 | 2012-12-05 | 宁波市鄞州青林医疗器械技术咨询有限公司 | Intubation tube type splash-proof vacuum blood sedimentation tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110720 |
|
| CX01 | Expiry of patent term |