CN202305273U - Sampling suction device with air bleed slots - Google Patents
Sampling suction device with air bleed slots Download PDFInfo
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- CN202305273U CN202305273U CN 201120396802 CN201120396802U CN202305273U CN 202305273 U CN202305273 U CN 202305273U CN 201120396802 CN201120396802 CN 201120396802 CN 201120396802 U CN201120396802 U CN 201120396802U CN 202305273 U CN202305273 U CN 202305273U
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- air bleed
- sampling
- bleed slot
- extractor
- slot
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Abstract
The utility model discloses a sampling suction device with air bleed slots. The sampling suction device comprises a needle bed and a needle body fixed in the needle bed, wherein the needle body comprises a main body with a sampling straight-through hole formed in the middle; at least one air bleed slot parallel to the axis of the sampling straight-through hole is formed on the main body; and the cross section of the air bleed slot is circular arc-shaped. In one preferred embodiment, a first air bleed slot and a second air bleed slot are parallelly formed on the main body and both parallel to the axis of the sampling straight-through hole, and the distance between the slot bottoms of the two air bleed slots and the axis is equal to the diameter of an outer cylindrical surface where the closing segments of two air bleed slots near to the needle head end are positioned. The sampling suction device can reduce scraps caused by puncturing of a test tube cap, and has the advantages of simple structure, and low implementation cost.
Description
Technical field
The utility model relates to a kind of sampling apparatus, especially relates to air bleed slot is with in a kind of use in cellanalyzer sampling extractor.
Background technology
There is the mode of two kinds of samplings in cellanalyzer now: the sampling of 1, uncapping, promptly manually cap test tube is opened, and test tube is placed under the sampling needle sample; 2, close the lid sampling, promptly need not the manual unlocking cap test tube, the sampling pinprick is worn cap test tube, and samples in entering test tube bottom.
Wherein, close and cover sample mode sampling needle is had following requirement: 1, sampling needle possesses certain puncture force, can the rubber cap test tube be punctured; 2, owing to close the remaining negative pressure of the existence in vitro of lid,, need carry out pressure to the test tube that closes lid and discharge for fear of of the influence of remaining negative pressure to sampling quantity.
In order to possess certain puncture force, the existing sampling needle head that possesses the puncture function is made pointed, and shape mainly contains two kinds: pointed (the Chinese patent CN2938104Y) that monocline mouth pointed (U.S. Pat 3063451) and three scarves form.
Now the remaining negative pressure of the cap test tube that closes lid is carried out the mode that pressure discharges and have two kinds: 1, open air drain on the sampling needle surface; 2, be provided with two-tubely in the sampling needle, wherein a pipe is for sampling pipe, and another pipe is bleeder pipe, after promptly sampling needle penetrates test tube, realizes venting with atmosphere through the bleeder pipe passage with test tube is inner.
The existing sampling needle that possesses the venting function such as U.S. Pat 5969272 and U.S. Pat 3063451 and Chinese patent CN1900716A and Chinese patent CN2938104Y announcement.
For example, the sampling needle of U.S. Patent number 5969272 is to be bonded into one with two circular metal tubules parallel to each other, and head end seals with short pole, through welding the groove of the V word shape between two tubules is filled and led up to connect this two pipe.On the periphery of sampling needle head end near pole, have and two transverse holes that communicate of pipe, one of them is used for sampling, and another is used for the bleeder pipe that links to each other with atmosphere, realizes exitting through bleeder pipe.Because sampling needle need engage two sampling pipes through welding with bleeder pipe; Complex process and cost are high; Blood sample can get into bleeder pipe in sampling process, need clean with dry bleeder pipe after having sampled, and therefore needs to increase wash liquid stream operation valve and dry breather valve; High to the requirement of the system that builds malleation (dry bleeder pipe is used) simultaneously, the complete machine cost is high.
And for example; The sampling needle of Chinese patent CN2938104Y comprises needle body, sampling pipe and snorkel, and wherein needle body is made up of needle point and sleeve pipe, and needle point is provided with step surface; Sampling pipe and snorkel are filled in the casing cavity side by side, and sleeve pipe is inserted in to the needle point step surface and realizes locating then.Tip portion has two apertures side by side along axis direction, docks sampling pipe endoporus and snorkel endoporus respectively and forms thieff hatch and air hole, has two transverse holes in the needle point lower end simultaneously, is communicated to thieff hatch and air hole respectively.Thieff hatch is used for sampling, and air hole is used for linking to each other with atmosphere, realizes venting through this air hole.The sampling needle assembling connects simple; But blood sample can get into bleeder pipe in sampling process, need clean with dry bleeder pipe after having sampled, and needs to increase wash liquid stream operation valve and dry breather valve; High to the requirement of the system that builds malleation simultaneously, the complete machine cost is high.
Summary of the invention
For overcoming the defective of prior art, the utility model provides a kind of both can reduce the complete machine cost, and can reducing again simultaneously punctures to cap test tube produces the sampling extractor of chip.
The utility model adopts following technical scheme to realize: a kind of sampling extractor with air bleed slot, and it comprises: needle stand and be fixed on the needle body in the needle stand; The main body of sampling clear opening is set in the middle of needle body comprises, an air bleed slot that is parallel to sampling clear opening axis is set at least, and the xsect of air bleed slot is a circular arc on main body.
Wherein, parallel on main body first air bleed slot and second air bleed slot are set, and first air bleed slot and second air bleed slot all are parallel to the axis of the clear opening of sampling.
Wherein, first air bleed slot and second air bleed slot are 120 ° at circumferential angle.
Wherein, the length of first air bleed slot and second air bleed slot is all greater than the cap test tube thickness and the test tube degree of depth.
Wherein, the bottom land of first air bleed slot and the distance of sampling clear opening axis, the bottom land of second air bleed slot and the distance of sampling clear opening axis, all the external diameter with second cylindrical section equates.And first air bleed slot, second air bleed slot are all slotted to second cylindrical section.
Wherein, the main body of needle body comprises first cylindrical section, the first rounding off section, first conical section, the second rounding off section, second cylindrical section, the 3rd rounding off section, second conical section and the bulb end of smooth connection successively.
Wherein, on the face of cylinder of second cylindrical section, be provided with one with sampling clear opening vertical sampling transverse holes.
Wherein, the sampling transverse holes is concordant with the bottom of sampling clear opening.
Wherein, the locating surface that the sampling extractor is circumferentially located is set on the needle stand.
Compared with prior art, the utlity model has following beneficial effect:
The utility model realizes discharging the function of the remaining negative pressure of test tube at the open air drain of sampling extractor outside surface; When cleaning and dry sampling needle outside surface process; Also air bleed slot has been carried out cleaning and drying; Need not to increase wash liquid stream operation valve and dry breather valve,, and can save Measuring Time simultaneously to building the less demanding of positive pressure system.And, the utility model in air bleed slot and sampling extractor outside surface and everywhere the junction all do not have sharp edge and wedge angle, can reduce the chip that cap test tube is punctured and produces.In addition, the utlity model has advantage of simple structure.
Description of drawings
Fig. 1 is the schematic perspective view of the utility model;
Fig. 2 is the positive enlarged diagram of the utility model head end;
Fig. 3 is the cross sectional representation of the utility model air bleed slot;
Fig. 4 is the cross section of the utility model air bleed slot side synoptic diagram of deciding what is right and what is wrong;
Fig. 5 is the synoptic diagram in the utility model sampling extractor and cleaning device assembling cross section.
Embodiment
As shown in Figure 1, the sampling extractor of this enforcement comprises needle stand 1 and is fixed on the needle body 2 in the needle stand 1.Needle stand 1 is used for the sampling extractor is positioned in cellanalyzer with fixing.And needle stand 1 has locating surface 11, by locating surface the sampling extractor is circumferentially located, and is axial then be to position through needle stand 1 cascaded surface with needle body 2 formation.
Needle body 2 is provided with the main body 21 of sampling clear opening 20 in the middle of comprising, first air bleed slot 22 and second air bleed slot 23 that on main body 21, are provided with, and wherein first air bleed slot 22 and second air bleed slot 23 walk abreast and are parallel to the axis of the clear opening 20 of sampling.And sampling clear opening 20 forms sampling transverse holes 201 endways.
Further combine Fig. 2, Fig. 3 and shown in Figure 4, the main body 21 of needle body 2 comprises first cylindrical section 211 that connects successively, the first rounding off section 212, first conical section 213, the second rounding off section 214, second cylindrical section 215, the 3rd rounding off section 216, second conical section 217 and bulb end 218.
Sampling extractor head is made thin bulb shape; Form bulb end 218; Bulb end 218 is through second conical section 217, the 3rd rounding off section 216 and 215 smooth connections of second cylindrical section; Second cylindrical section 215 is through the second rounding off section 214 and 213 smooth connections of first conical section, and first conical section 213 is through the first rounding off section 212 and 211 smooth connections of first cylindrical section, and promptly reducer is avoided the generation of sharp edge through smooth connection.
On the face of cylinder of second cylindrical section 215, open one with the vertical sampling transverse holes 201 of sampling clear opening 20, sampling transverse holes 201 is concordant with the bottom of the clear opening 20 of sampling.Paste under the dead situation in sampling extractor bottom and test tube bottom and still can normally sample through the transverse holes 201 of sampling.
First air bleed slot 22 and second air bleed slot 23 are 120 ° at circumferential angle; And the length of first air bleed slot 22 and second air bleed slot 23 is all greater than the cap test tube thickness and the test tube degree of depth; After guaranteeing that the sampling extractor penetrates test tube, test tube inside communicates with ambient atmosphere and realizes venting.
In addition, the xsect of first air bleed slot 22 and second air bleed slot 23 is a circular arc, and passes through fillet and the transition of sampling needle extractor outer surface smoother on the groove top, avoids producing sharp edge and wedge angle.The external diameter of second cylindrical section 215 equates with the distance of sampling clear opening 20 axis with two air bleed slots 22 and 23 bottom lands; And two air bleed slots 22 and 23 are all slotted to second cylindrical section 215, guarantee that two air bleed slots 22 and 23 lean on the needle tip bottom land not form sharp edge with 215 smooth-going connections of second cylindrical section.
After circumferentially locating through 11 pairs of locating surfaces sampling extractor, the sampling extractor 100 that the utility model proposes is as shown in Figure 5 with the relative position of cleaning device 300.Cleaning device 300 comprises two inlets 301 and 302 and liquid outlet 303; Liquid outlet 303 is 180 ° with the angle of the axis of sampling transverse holes 201; Angle between two inlets 301 and 302 is 120 °, and two inlets 301 and 302 respectively and the angle between the liquid outlet 303 also be 120 °.
Push away cleaning fluid for two inlets 301 and 302 through syringe, liquid outlet 303 places with cleaning fluid sucking-off cleaning device 300, promptly accomplish the cleaning operation of sampling extractor through negative-pressure sucking.When two inlets 301 and 302 stopped to cleaning fluid, under liquid outlet 303 place's suction functions, atmosphere got into cleaning device 300 inside and sampling extractor outside surface is carried out drying through bottom air intake opening 304.
In sum, this enforcement useful technique effect that can reach is following:
1) through needle stand the sampling extractor is carried out axial location and circumferentially locatees, the location is reliable;
2) to sampling extractor outside surface clean with dry run in, also two air bleed slots have been carried out cleaning with dry simultaneously, need not to increase extra scavenging period and cleaning equipment, reduce the complete machine cost, and save Measuring Time;
3) in two air bleed slots and sampling extractor outside surface and everywhere the junction all do not have sharp edge and wedge angle, can reduce the chip that cap test tube is punctured and produces;
4) paste under the dead situation in sampling extractor bottom and test tube bottom and still can normally sample, possess and prevent function even at the cost of one's life through the sampling transverse holes;
5) the cleaning device liquid outlet becomes 180 ° with the axis of sampling transverse holes, can avoid cleaning process liquid outlet negative pressure that blood sample sucking-off in the thieff hatch is influenced the actual samples amount;
6) two inlets of cleaning device are arranged between air bleed slot and the sampling transverse holes in circumferential direction, directly the sampling transverse holes are not liquidated and can avoid cleaning solution dilution hole Inner Front End blood sample, and the air bleed slot that directly do not liquidate simultaneously can be avoided along the risk of air bleed slot leakage;
7) liquid outlet of cleaning device is arranged in the middle of two air bleed slots, can realize even cleaning and drying to two air bleed slots.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. the sampling extractor with air bleed slot is characterized in that, said sampling extractor comprises: needle stand and be fixed on the needle body in the needle stand; The main body of sampling clear opening is set in the middle of needle body comprises, an air bleed slot that is parallel to sampling clear opening axis is set at least, and the xsect of air bleed slot is a circular arc on main body.
2. according to the sampling extractor of the said band air bleed slot of claim 1, it is characterized in that, parallel on main body first air bleed slot and second air bleed slot are set, and first air bleed slot and second air bleed slot all are parallel to the axis of the clear opening of sampling.
3. according to the sampling extractor of the said band air bleed slot of claim 2, it is characterized in that first air bleed slot and second air bleed slot are 120 ° at circumferential angle.
4. according to the sampling extractor of the said band air bleed slot of claim 2, it is characterized in that the length of first air bleed slot and second air bleed slot is all greater than the cap test tube thickness and the test tube degree of depth.
5. according to the sampling extractor of the said band air bleed slot of claim 2; It is characterized in that the main body of needle body comprises first cylindrical section, the first rounding off section, first conical section, the second rounding off section, second cylindrical section, the 3rd rounding off section, second conical section and the bulb end of smooth connection successively.
6. according to the sampling extractor of the said band air bleed slot of claim 5, it is characterized in that, the bottom land of first air bleed slot and the distance of sampling clear opening axis, the bottom land of second air bleed slot and the distance of sampling clear opening axis, all the external diameter with second cylindrical section equates.
7. according to the sampling extractor of the said band air bleed slot of claim 6, it is characterized in that first air bleed slot, second air bleed slot are all slotted to second cylindrical section.
8. according to the sampling extractor of the said band air bleed slot of claim 5, it is characterized in that, on the face of cylinder of second cylindrical section, be provided with one with sampling clear opening vertical sampling transverse holes.
9. the sampling extractor of said according to Claim 8 band air bleed slot is characterized in that, the sampling transverse holes is concordant with the bottom of sampling clear opening.
10. according to the sampling extractor of any one said band air bleed slot of claim 1-9, it is characterized in that, the locating surface that the sampling extractor is circumferentially located is set on the needle stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120396802 CN202305273U (en) | 2011-10-18 | 2011-10-18 | Sampling suction device with air bleed slots |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120396802 CN202305273U (en) | 2011-10-18 | 2011-10-18 | Sampling suction device with air bleed slots |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305273U true CN202305273U (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120396802 Expired - Fee Related CN202305273U (en) | 2011-10-18 | 2011-10-18 | Sampling suction device with air bleed slots |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202305273U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019001538A1 (en) * | 2017-06-30 | 2019-01-03 | 深圳迈瑞生物医疗电子股份有限公司 | Sampling assembly, sample analyzer and sampling method |
| CN111122240A (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 |
| CN112378705A (en) * | 2020-10-28 | 2021-02-19 | 迈克医疗电子有限公司 | Sampling device and sample analyzer |
-
2011
- 2011-10-18 CN CN 201120396802 patent/CN202305273U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019001538A1 (en) * | 2017-06-30 | 2019-01-03 | 深圳迈瑞生物医疗电子股份有限公司 | Sampling assembly, sample analyzer and sampling method |
| WO2019000458A1 (en) * | 2017-06-30 | 2019-01-03 | 深圳迈瑞生物医疗电子股份有限公司 | Sampling assembly, sample analyzer and sampling method |
| CN110730911A (en) * | 2017-06-30 | 2020-01-24 | 深圳迈瑞生物医疗电子股份有限公司 | Sampling assembly, sample analyzer and sampling method |
| US11614382B2 (en) | 2017-06-30 | 2023-03-28 | Shenzhen Mindray Bio-Medical Electronics Co., Ltd. | Sampling assembly, sample analyzer and sampling method |
| CN110730911B (en) * | 2017-06-30 | 2023-12-01 | 深圳迈瑞生物医疗电子股份有限公司 | Sampling assembly, sample analyzer and sampling method |
| CN111122240A (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 |
| CN112378705A (en) * | 2020-10-28 | 2021-02-19 | 迈克医疗电子有限公司 | Sampling device and sample analyzer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151221 Address after: 518088 Guangdong city of Shenzhen province Nanshan District Xili Street Xueyuan Road No. 1001 Nanshan Chi Park A4 Building 9 floor Patentee after: Shenzhen blue ocean biological engineering Co., Ltd. Address before: Futian District King Road Shenzhen city Guangdong province 518000 No. 81 country garden building E 601 Patentee before: Landwind Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20190627 Address after: 518000 8th Floor, Building A4, Nanshan Zhiyuan, 1001 Xueyuan Avenue, Xili Street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Lanyun Biomedical Technology Co., Ltd. Address before: 518088 9, A4 building, Nanshan Zhiyuan 1001, Xue Yuan Avenue, Xili street, Nanshan District, Shenzhen, Guangdong. Patentee before: Shenzhen blue ocean biological engineering Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20191018 |
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| CF01 | Termination of patent right due to non-payment of annual fee |