CN106353522B - Integrated sampling needle is filtered for the mixing of in-vitro diagnosis medical instrument - Google Patents
Integrated sampling needle is filtered for the mixing of in-vitro diagnosis medical instrument Download PDFInfo
- Publication number
- CN106353522B CN106353522B CN201610752428.0A CN201610752428A CN106353522B CN 106353522 B CN106353522 B CN 106353522B CN 201610752428 A CN201610752428 A CN 201610752428A CN 106353522 B CN106353522 B CN 106353522B
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- China
- Prior art keywords
- needle
- thief hole
- hole
- medical instrument
- venthole
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1004—Cleaning sample transfer devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N2035/1027—General features of the devices
- G01N2035/1048—General features of the devices using the transfer device for another function
- G01N2035/1058—General features of the devices using the transfer device for another function for mixing
- G01N2035/106—General features of the devices using the transfer device for another function for mixing by sucking and blowing
Abstract
The invention discloses a kind of mixings for in-vitro diagnosis medical instrument to filter integrated sampling needle, including needle body, which is made of the inner and outer tubes being coaxially disposed, and the front end of needle body is needle section, in needle section, the end of inner tube and the end of outer tube are in sealed connection；Gap in said inner tube formed for sample by fluid path channel, the gap between outer wall of inner tube and outer tube wall forms gas channels for gas to pass through；Several ventholes and several thief holes are provided on the peripheral wall of needle body, in the axial direction compared with venthole closer to needle section, venthole connects thief hole with gas channels, and the bottom face of at least one venthole and gas channels is tangent；Thief hole is connected with fluid path channel, and the bottom face of at least one thief hole and fluid path channel is tangent；Bore≤0.6mm of thief hole.Sampling needle of the present invention is simple in structure, effectively can reduce or even avoid remaining minute bubbles to be inhaled into risk in fluid path channel and have both filtering and mixing function.
Description
Technical field
The present invention relates to a kind of sampling needles, and in particular to a kind of mixing for in-vitro diagnosis medical instrument filters integral type
Sampling needle.
Background technology
In-vitro diagnosis medical instrument such as blood cell analyzer, urinary formed element analyzer etc. are used to analyze blood or urine
Liquid or other tissue liquid samples.
The suction needle that liquid sample is taken from container interior suction has been disclosed in the prior art, as notification number is CN2938104Y
Utility model patent, discloses a kind of using suction needle, this includes needle body, probe tube and snorkel, the needle body using suction needle
Front end there is tip, which is equipped with venthole from the recessed cavity of its end face axial and on the needle body peripheral wall and takes
Sample hole, the snorkel and sampling tube side-by-side fill in cavity, and the front end of the snorkel and probe tube is respectively by separating setting
First, second channel is connect with venthole and thief hole.The utility model only needs to fill in snorkel and probe tube in needle body
One, which can be formed, has the sampling suction needle of ventilation pipe and sampling conduit, relative to the prior art construction before its applying date
Simply, it is easy to process, and due to not needing to weld, also reduce manufacture cost.But the utility model is asked there are following
Topic：
(1) sampling suction needle is block form binary channel sampling needle, and two tubules are formed in bilateral line structure arranged side by side
Cross section be not round, in cleaning, under identical cross-sectional area, liquid stream distance；And under identical flow quantity, it needs
Longer scavenging period.Also only it is to realize even two tubules, which are filled in after casing, makes the cross section of needle sheet become circle
To the leakproofness of peripheral surface during cleaning.
(2) its venthole is set to the lower section of thief hole closer to tip, and there are remaining minute bubbles to be inhaled into fluid path
In channel, and then influence the risk counted.
(3) when in sample per se with or generate after precipitation some bulky grains, threadiness or it is other to testing result without
When the ingredient or impurity of influence, the ingredient or impurity of these greater particle sizes enter sampling needle and travel further into instrument sample streams
After the valve body and the pump housing of journey, easily make pipeline blockage, cause to sample, clean difficulty, eventually lead to instrument detection failure.And above-mentioned reality
With the novel sampling suction needle and without filtering function.
Invention content
The technical problem to be solved in the present invention is to provide it is a kind of it is simple in structure, save cleaning solution, can effectively reduce or even keep away
Exempt from remaining minute bubbles be inhaled into risk in fluid path channel and have both filtering and mixing function for in-vitro diagnosis medical instrument
Mixing filtering integrated sampling needle.
Mixing of the present invention for in-vitro diagnosis medical instrument filters integrated sampling needle, including needle body, wherein：
The needle body is made of the inner and outer tubes being coaxially disposed, and the front end of needle body is needle section, in needle section, inner tube
End and outer tube end in be tightly connected；Gap in said inner tube formed for sample by fluid path channel, outside inner tube
Gap between wall and outer tube wall forms gas channels for gas to pass through；
Be provided on the peripheral wall of needle body several (one or more) ventholes and several (one or two with
On) thief hole, in the axial direction compared with venthole closer to needle section, the venthole connects the thief hole with gas channels
It is logical, and the bottom face of at least one venthole and gas channels is tangent；The thief hole is connected with fluid path channel, and at least one
The bottom face of a thief hole and fluid path channel is tangent；
Bore≤0.6mm of the thief hole.
Further, the bore of thief hole can be designed as 0.3~0.6mm, to obtain better filter effect.
When the quantity of venthole and thief hole is respectively more than two, preferably venthole is set on the peripheral wall of needle body,
It is preferred that thief hole is also set on the peripheral wall of needle body.
The shape of the venthole and thief hole can be designed to different shape as needed, and preferably venthole and thief hole is equal
It is rounded.
When venthole and rounded thief hole, in order to further improve the intensity of sampling needle needle section, thief hole exists
Set-up mode on needle body peripheral wall is preferably as follows：The thief hole follows in the form of list hole arrangement and row diplopore arrangement
Ring is set on the peripheral wall of needle body, and the line that the diplopore arranges the center of circle of upper two thief holes is parallel with the axis of needle body, described
The center of circle of thief hole on single hole row and the line and horizontal line in the center of circle of the upper one of thief hole of diplopore row are in 45 ° of angles.
Compared with prior art, the method have the characteristics that：
1st, using the design structure of coaxial-type inner and outer pipe, and venthole and thief hole may be contained on needle body peripheral wall
Structure can use and sampling needle is cleaned with pin type cleaning set, when can also save the dosage of cleaning solution, reduce cleaning
Between, cleaning efficiency is improved, so as to improve instrument detection speed.
The 2nd, thief hole is set to the lower section of venthole, and held compared with venthole in the axial direction closer to needle section realizing
In device while sample abundant mixing, effectively reduce and even remaining minute bubbles is avoided to be inhaled into fluid path channel, and then influence
The risk of counting.
3rd, the bore of thief hole is limited, filtration needs and imbibition efficiency requirements is taken into account, avoids big when drawing liquid sample
Granule foreign is entered in sampling needle, prevents sample pipeline from blocking in long-term use, the failure rate of effective lowering apparatus.
4th, design at least one venthole and gas channels bottom face is tangent and at least one thief hole and fluid path are led to
The tangent structure of the bottom face in road, it is ensured that gas channels and fluid path channel can be cleaned thoroughly, prevent cross contamination.
Description of the drawings
Fig. 1 is the structure diagram of one embodiment of the present invention；
Fig. 2 is the partial enlarged view of needle body in Fig. 1 illustrated embodiments；
Fig. 3 is the cut-away view of needle body part shown in Fig. 2；
Fig. 4 is the A-A direction views of Fig. 3.
Figure label is：
1 sampling needle；2 needle bodies；3 thief holes；4 ventholes；5 fluid path channels；6 gas channels；7 inner tubes；8 outer tubes.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to more fully understand present disclosure, but the present invention
It is not limited to following embodiment.
As shown in Figure 1 to Figure 4, the mixing filtering integrated sampling needle 1 of the present invention for in-vitro diagnosis medical instrument, packet
Needle body 2 is included, wherein：
The needle body 2 is made of the inner tube 7 and outer tube 8 being coaxially disposed, and the front end of needle body 2 is needle section, in needle section,
With the end of outer tube 8 in being tightly connected, entire 2 shape of needle body is in cylinder body shape for the end of inner tube 7；Gap in said inner tube 7
Formed for sample by fluid path channel 5, one end of the fluid path channel 5 extended at the sealing of 7 end point of needle section inner tube, separately
One end is then connected with the sampling line in in-vitro diagnosis medical instrument；Gap shape between 8 inner wall of 7 outer wall of said inner tube and outer tube
Into gas channels 6 for gas to pass through, one end of the gas channels 6 extends to 7 outer wall of needle section inner tube and is formed with 8 inner wall of outer tube
Sealing at, the other end is then connected with the external aeration pipeline of in-vitro diagnosis medical instrument；
It is logical that several (one or more is more than two in present embodiment) are provided on the peripheral wall of needle body 2
Stomata 4 and several (one or more, be in present embodiment more than two) thief holes 3, the thief hole 3 and logical
Stomata 4 is rounded, wherein aperture≤0.6mm of thief hole 3；The thief hole 3 is set to the lower section of venthole 4,
Compared with venthole 4 closer to needle section on axial, venthole 4 therein is uniformly arranged on the peripheral wall of needle body 2, these ventholes 4
It is connected with gas channels 6, and bottom face phase of at least one venthole 4 (being four in present embodiment) with gas channels 6
It cuts；Set-up mode of the thief hole 3 on 2 peripheral wall of needle body be：Thief hole 3 is arranged in list hole arrangement and a row diplopore
Form is circularly set on the peripheral wall of needle body 2, and wherein diplopore arranges the line in the center of circle of upper two thief holes 3 and the axis of needle body 2
Parallel, the line that the center of circle and the diplopore of the thief hole 3 on single hole row arrange the center of circle of upper one of thief hole 3 is in horizontal line
45 ° of angles；These thief holes 3 are connected with fluid path channel 5, and at least one thief hole 3 (in present embodiment be four) with
The bottom face of fluid path channel 5 is tangent.
In the above embodiment, the in-vitro diagnosis medical instrument can be blood cell analyzer, and urine to be formed
Divide analyzer, urinary formed element analyzer can be further appointed as, at this point, sample is urine.
Can be further 0.3~0.6mm by the aperture design of thief hole 3, to obtain preferably mistake in the above embodiment
Filter effect.
Use the process that sampling needle 1 of the present invention works for：
By programmable sampling mechanism, in 1 knit stitch of sampling needle to the container for filling sample, air pump is inflated to gas channels 6,
By 4 outlet of venthole of sampling needle 1, gas forms bubble, bubble formed by continuously inflating, on bubble gas in the sample
It rises, by form bubble and bubble rising comprehensive function in sample to inflating, so as to make sample mixing, stops inflating at this time.
After stopping is inflated, sampled by thief hole 3.After sampling, it is respectively washed the gas channels 6 of sampling needle 1 and fluid path channel
5。
Claims (5)
1. for the mixing filtering integrated sampling needle (1) of in-vitro diagnosis medical instrument, including needle body (2), it is characterised in that：
The needle body (2) is made of the inner tube (7) and outer tube (8) being coaxially disposed, and the front end of needle body (2) is needle section, in needle
Head, the end of inner tube (7) is with the end of outer tube (8) in sealed connection；Gap in said inner tube (7) is formed to be passed through for sample
Fluid path channel (5), one end of the fluid path channel (5) extended at the sealing of needle section inner tube (7) end point, the other end then with
Sampling line connection in in-vitro diagnosis medical instrument；Gap between inner tube (7) outer wall and outer tube (8) inner wall forms supplied gas
By gas channels (6), one end of the gas channels (6) extends to needle section inner tube (7) outer wall and is formed with outer tube (8) inner wall
Sealing at, the other end is then connected with the external aeration pipeline of in-vitro diagnosis medical instrument；
Several ventholes (4) and several thief holes (3) are provided on the peripheral wall of needle body (2), the thief hole (3) exists
Compared with venthole (4) closer to needle section on axial, the venthole (4) is connected with gas channels (6), and at least one ventilation
Hole (4) and the bottom face of gas channels (6) are tangent；The thief hole (3) is connected with fluid path channel (5), and at least one is taken
Sample hole (3) and the bottom face of fluid path channel (5) are tangent；
Bore≤0.6mm of the thief hole (3).
2. the mixing filtering integrated sampling needle (1) according to claim 1 for in-vitro diagnosis medical instrument, feature
It is：0.3~0.6mm of bore of the thief hole (3).
3. the mixing filtering integrated sampling needle (1) according to claim 1 or 2 for in-vitro diagnosis medical instrument,
It is characterized in that：The venthole (4) and thief hole (3) are set on the peripheral wall of needle body (2) respectively.
4. the mixing filtering integrated sampling needle (1) according to claim 1 or 2 for in-vitro diagnosis medical instrument,
It is characterized in that：The venthole (4) and thief hole (3) is rounded.
5. the mixing filtering integrated sampling needle (1) according to claim 4 for in-vitro diagnosis medical instrument, feature
It is：The thief hole (3) is circularly set in the form of list hole arrangement and row diplopore arrangement in the peripheral wall of needle body (2)
On, the line that the diplopore arranges the center of circle of upper two thief holes (3) is parallel with the axis of needle body (2), taking on the single hole row
The center of circle in sample hole (3) and the line and horizontal line in the center of circle of the upper one of thief hole (3) of diplopore row are in 45 ° of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610752428.0A CN106353522B (en) | 2016-08-29 | 2016-08-29 | Integrated sampling needle is filtered for the mixing of in-vitro diagnosis medical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610752428.0A CN106353522B (en) | 2016-08-29 | 2016-08-29 | Integrated sampling needle is filtered for the mixing of in-vitro diagnosis medical instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106353522A CN106353522A (en) | 2017-01-25 |
| CN106353522B true CN106353522B (en) | 2018-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610752428.0A Active CN106353522B (en) | 2016-08-29 | 2016-08-29 | Integrated sampling needle is filtered for the mixing of in-vitro diagnosis medical instrument |
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| Country | Link |
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| CN (1) | CN106353522B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378705A (en) * | 2020-10-28 | 2021-02-19 | 迈克医疗电子有限公司 | Sampling device and sample analyzer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512248A (en) * | 1993-11-23 | 1996-04-30 | Van; Jack F. J. | Twin-probe blood sample diluting device |
| CN203275132U (en) * | 2013-06-04 | 2013-11-06 | 韩丽红 | Sampling needle of blood analyzer |
| CN203299019U (en) * | 2013-05-03 | 2013-11-20 | 中国石油化工股份有限公司 | Needle tubing type sampler |
| CN205982306U (en) * | 2016-08-29 | 2017-02-22 | 桂林优利特医疗电子有限公司 | A mixing filtration integral type sampling needle for external diagnosis medical instrument |
-
2016
- 2016-08-29 CN CN201610752428.0A patent/CN106353522B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512248A (en) * | 1993-11-23 | 1996-04-30 | Van; Jack F. J. | Twin-probe blood sample diluting device |
| CN203299019U (en) * | 2013-05-03 | 2013-11-20 | 中国石油化工股份有限公司 | Needle tubing type sampler |
| CN203275132U (en) * | 2013-06-04 | 2013-11-06 | 韩丽红 | Sampling needle of blood analyzer |
| CN205982306U (en) * | 2016-08-29 | 2017-02-22 | 桂林优利特医疗电子有限公司 | A mixing filtration integral type sampling needle for external diagnosis medical instrument |
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| Publication number | Publication date |
|---|---|
| CN106353522A (en) | 2017-01-25 |
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