CN2938104Y - Sampling suction needle - Google Patents
Sampling suction needle Download PDFInfo
- Publication number
- CN2938104Y CN2938104Y CN 200620017346 CN200620017346U CN2938104Y CN 2938104 Y CN2938104 Y CN 2938104Y CN 200620017346 CN200620017346 CN 200620017346 CN 200620017346 U CN200620017346 U CN 200620017346U CN 2938104 Y CN2938104 Y CN 2938104Y
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- China
- Prior art keywords
- needle
- cavity
- snorkel
- stopple coupon
- sleeve pipe
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- Expired - Lifetime
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Abstract
The utility model discloses a sampling absorption needle, comprising a needle body, a sampling pipe and a vent pipe. With a prong at the front end, the needle body is provided with a cavity which concaves from the end face of the needle body to the axis and ventholes and sampling holes which are arranged on the perisporium of the needle body. The sampling pipe and the vent pipe whose front ends are connected with the ventholes and the sampling holes respectively through a first pathway and a second pathway separated with an interval between are disposed side by side in the cavity. A sampling absorption needle with a vent pipe and a sampling pipe can be created after pushing the vent pipe and sampling pipe into the needle body. The sampling absorption needle is simple in structure and easy to process and reduces the production cost due to no need of welding.
Description
Technical field
The utility model is the sampling suction needle that is applied in the blood cell analysis field about a kind of.
Background technology
The suction needle of imbitition sample in the sample container of sealing such as serum cap or rubber plug is disclosed in the prior art; This pin constitutes one by drawing the snorkel that stopple coupon that sample uses and logical atmosphere use, and is provided with the tip that is used to puncture at front end, is provided with two open-works that communicate respectively with stopple coupon and snorkel simultaneously near front end; In the rear end, stopple coupon all is provided with the shank that can be connected with the instrument internal pipeline with snorkel.During use this sample suction needle is pierced through aforesaid serum cap or plug, and guarantee that two open-works of its front end all enter in the interior liquid sample of container fully; This moment, the sample in the container can be under the effect of the absorption power of analytical instrument, was transported in the analytical instrument through the stopple coupon of sample suction needle and analyzed; Because the rear end of snorkel is connected to the pipeline that communicates with atmosphere, then atmosphere can enter in the sample container by snorkel in sampling simultaneously, and the vacuum that forms to fill up the sampling of container internal cause can be finished fast smoothly to guarantee sampling.
As the sample suction needle of East Asia Medical Electronics Co., Ltd (Sysmex, SYSMEX), patent publication No. is CN1168971A, open day be Dec 31 in 1997 day, be called " test portion suction pipe and manufacture method thereof ", promptly belong to this series products.This test portion suction pipe promptly is to thrust in the container that blood sample is housed of sealing by its tip, by the power on the analytical instrument sample is drawn in the instrument and analyzes.
This test portion suction pipe is to be bonded into one with two circular metal tubules parallel to each other, it is most advanced and sophisticated with short pole sealing, have the transverse holes that connects with inner chamber near the periphery the close pole of tubule, one of them pipe that is used to draw sample is a suction pipe; The pipe that another logical atmosphere is used is a snorkel.
The connection of two tubules is by the method for welding the groove of the v word shape between two tubules to be filled and led up, and its cross section is an approximate ellipsoidal.The position that engages does not have special requirement, but will consider the intensity of sample suction pipe, therefore, will engage in the peripheral wall surfaces of tip portion at least.Factor considers that two tubules and most advanced and sophisticated sealing will be selected identical materials for use with pole from processing technology, product strength and from preventing that galvanic corrosion from getting rusty etc.This sample suction needle front end closure is manufactured with scarf, and the scarf of two tubules leans against privately and is bonded together, the tip that is formed for piercing through.The formed tip angle of the scarf of two tubules is less than 180 °.The transverse holes of suction pipe and the transverse holes of snorkel are separately positioned on the tubule bus that the minor axis with the scarf of each tubule (like oval) intersects.
During the integrated connection of two tubules, be by the groove of the v word shape between two tubules being filled and led up realization with two triangle cylindrical member identical with two tubule materials.Every triangle cylindrical member has a plane and two adjacent concavity flexure planes in the longitudinal direction, and the curvature of concavity flexure plane is identical with two tubule peripheral wall surfaces curvature respectively, as with the moulding faying face of two tubules.After the moulding, the profile of the xsect of sample suction needle is an approximate ellipsoidal.
But this kind test portion suction pipe has following shortcoming:
1) processing technology complexity, the manufacturing cost height, long processing time with two tubules difficulty height during welding fabrication in the longitudinal direction, special triangle cylindrical member, needs complicated technology and pattern assembly just can finish;
2) because of its cross section is an approximate ellipsoidal, bending strength is asymmetric, and is easily crooked so intensity is low on the short-axis direction in this cross section, is difficult for serviceable life guaranteeing, especially the link of strength weak especially in place that front end has a transverse holes;
3) this scheme is on the peripheral wall surfaces of the front end of suction pipe and snorkel, promptly the place near two short pole end faces that insert processes two through holes, because of the end face of pole is the plane, two through holes are circular holes, this side has the not dead angle of easy cleaning between the end face of pole and through hole, be easy to generate because of cross pollution between the residual sample that causes of sample, and then the accuracy of impact analysis;
4) cross section of this product is an approximate ellipsoidal, when the outside surface to pin cleans, to the requirement height of sealing, be difficult for to realize, need special seal, sealing effectiveness is good not as round section, reveals easily and produces the danger of pollution.
5) cross section because of the periphery wall of the needle body of this product solution is nearly ellipse, when carrying out following process such as polishing, alignment when the external peripheral wall surfaces of needs, not as the easy realization of round section, is difficult to finish with the method for routine.
6) two of this scheme tubules such as needs adopt different diameters, can make the cross sectional shape of needle body asymmetric, have more increased manufacture difficulty, also can influence when using the sealing property to needle body.
Summary of the invention
Technical matters to be solved by this invention is, overcomes the deficiencies in the prior art, provide a kind of simple in structure, be easy to processing and lower-cost sampling suction needle.
The technical solution adopted for the present invention to solve the technical problems is: this sampling suction needle comprises needle body, stopple coupon and snorkel, the front end of this needle body has the tip, this needle body is provided with from the recessed cavity of its end face axial and is located at air hole and thief hole on this needle body perisporium, this snorkel and stopple coupon are filled in cavity side by side, and the front end of this snorkel and stopple coupon links to each other with thief hole with air hole by separating first, second passage that is provided with respectively.
Described cavity comprises by separated first, second cavity in next door, this first cavity is made up of the first passage that is connected and first installation cavity, this second cavity is made up of the second channel that is connected and second installation cavity, the front end of this snorkel and stopple coupon is individually fixed in this first, second installation cavity, and this air hole and thief hole connect with first, second passage respectively.
The internal diameter of described first, second installation cavity respectively with the external diameter of snorkel and stopple coupon coupling, the internal diameter of this first, second passage respectively with the internal diameter coupling of snorkel and stopple coupon.
Described needle body comprises needle point and sleeve pipe, this needle point is made up of tip and bar portion, and the periphery wall of this bar portion has step, and this step place is fixed in this sleeve pipe socket, this first, second cavity is located at this bar portion, and this air hole and thief hole all are located on the perisporium of this bar portion.
Described snorkel and stopple coupon all have bending segment, and the bending segment of this snorkel and stopple coupon inserts respectively and is fixed in air hole and the thief hole, and the bending segment of this snorkel and stopple coupon is respectively first, second passage.
Described needle body is made up of needle point and sleeve pipe, this needle point is made up of tip and bar portion, and the periphery wall of this bar portion has step, and this step place is fixed in the socket of this sleeve pipe, and this cavity axially runs through this sleeve pipe, and this air hole and thief hole are located on this sleeve pipe and are all connected with this cavity.
One end of described sleeve pipe is fixed on the needle point, and its other end is fixed on the fixed block, and corresponding snorkel and stopple coupon are respectively equipped with snorkel cavity and stopple coupon cavity on this fixed block.
Described air hole is in the axial direction than the more close tip of thief hole.
Described tip is formed by three scarves at least or is conical.
The invention has the beneficial effects as follows, snorkel and stopple coupon only need be filled in to be fixed in and can form one in the needle body and have the sampling suction needle of breather line and sampling conduit, so simple in structure, be easy to processing, and since do not need the welding, also reduced manufacturing cost.
Description of drawings
Fig. 1 is the stereographic map of the utility model sampling suction needle.
Fig. 2 is the main cut-open view of the utility model sampling suction needle.
Fig. 3 is the sectional view of the utility model sampling suction needle.
Fig. 4 is the partial enlarged drawing of the utility model sampling suction needle.
Fig. 5 is pack into a front view behind the sleeve pipe of the snorkel of the utility model sampling suction needle and stopple coupon.
Fig. 6 is pack into a sectional view behind the sleeve pipe of the snorkel of the utility model sampling suction needle and stopple coupon.
Fig. 7 is the cut-open view of the needle point of the utility model sampling suction needle.
Fig. 8 is the stereographic map of the needle point of the utility model sampling suction needle.
Fig. 9 is the stereographic map of the fixed block of the utility model sampling suction needle.
Figure 10 is the main cut-open view of the fixed block of the utility model sampling suction needle.
Figure 11 is the sectional view of the fixed block of the utility model sampling suction needle.
Figure 12 is that the application of the utility model sampling suction needle constitutes synoptic diagram.
Figure 13 is the cut-open view that the application of the utility model sampling suction needle constitutes.
Figure 14 is the cut-open view of the utility model sampling suction needle second embodiment.
Figure 15 is the cut-open view of the sleeve pipe of the utility model sampling suction needle the 3rd embodiment.
Figure 16 is the cut-open view of the sleeve pipe of the utility model sampling suction needle the 4th embodiment.
Figure 17 is the stereographic map of the needle point of the utility model sampling suction needle the 5th embodiment.
Embodiment
See also Fig. 1 to Figure 13, the utility model sampling suction needle 1 comprises the needle body, snorkel, stopple coupon and the fixed block of being made by corrosion-resistant material.This needle body is made up of needle point 11 and sleeve pipe 8, this needle point 11 is made up of tip 18 and bar portion 19, this tip 18 is formed by at least three scarves 20, this bar portion 19 is cylindric, first, second cavity 21,22 arranged from the end face of this bar portion 19 is recessed vertically, this first, second cavity 21,22 is separated by next door 25, and this first cavity 21 is made up of first installation cavity 23 and the first passage 17 that are connected, and the periphery wall of this bar portion is provided with the air hole 15 that is communicated with this first passage.This second cavity 22 is made up of second installation cavity 24 and the second channel 16 that are connected, and the periphery wall of this bar portion is provided with the thief hole 14 that is communicated with second channel.The internal diameter of this first, second installation cavity respectively with the external diameter of snorkel and stopple coupon coupling, the internal diameter of this first, second passage respectively with the internal diameter coupling of snorkel and stopple coupon, thereby can not form step when making this snorkel and stopple coupon pack respective chamber into.This snorkel 10 roughly is " L " type.This stopple coupon 9 roughly is " one " type.This sleeve pipe 8 axially runs through, and the periphery wall of this needle point bar portion 19 is provided with step 26, and this step place is fixed in these sleeve pipe 8 sockets, and the internal diameter of this sleeve pipe is greater than the external diameter sum of snorkel and stopple coupon." L " type snorkel cavity 28 and " one " type stopple coupon cavity 29 that this fixed block 12 has sleeve pipe installation cavity 27 and is communicated with it, step 26 sockets of one end of sleeve pipe 8 and needle point periphery wall are fixed, its other end is fixed in this sleeve pipe installation cavity 27, one end of this snorkel 10 is fixed in first installation cavity 23 of needle point, and its other end passes successively and stretches out this fixed block 12 behind sleeve pipe 8 and " L " type snorkel cavity 28 and be communicated with aeration pipe outside road 4.One end of this stopple coupon 9 is fixed in second installation cavity 24 of needle point, and its other end penetrates " one " type stopple coupon cavity 29 and is communicated with outer samples pipeline 5 by joint 7.
Sleeve pipe is used for the connection of needle point and fixed block is played a supportive role, the periphery wall of needle point and the periphery wall of sleeve pipe form the curved surface of continuously smooth, resistance when being used to reduce needle point and thrusting container lid is convenient to thrust sample container, also helps the cleaning to its periphery wall; Snorkel and stopple coupon form the venting channels and the sampling passage of continuously smooth respectively with first, second passage of needle point, thereby the resistance both can reduce work the time being of value to sampling again and to the cleaning of the internal perisporium of passage; Fixed block can be made into needed different shape, is easy to the installation and fixing the getting final product of suction needle.
The principle of work of this sampling suction needle is as follows: the sampling course of work is to pass purge chamber 2 by the tip portion of sample suction needle 1 earlier, and the lid that then stings sample container 3 enters in the sample container; After two apertures (being thief hole 14 and air hole 15) that guarantee its front end all enter into the sample in the container, eliminate original vacuum in the sample container by venting channels earlier, its process is, air in the purge chamber successively passes through aeration pipe outside road 4, snorkel 10, first passage 17 on the needle point 11 and air hole 15 and enter in the sample container, subsequent analysis instrument promptly begin sampling; During sampling, the samples in the sample container 3 enter in the instrument by outer samples pipeline 5 after successively passing through thief hole 14, second channel 16 and stopple coupon 9 on the needle point 11 again, carry out analytical work.Because sample container is sealed, in sampling, also can form vacuum, be unfavorable for sampling; For eliminating this vacuum, will be in sample container in sampling input air, realize by venting channels equally, so this passage communicates with atmosphere all the time; In sampling, eliminate the vacuum in the sample container with regard to having guaranteed like this, also just finished whole sampling process smoothly.
After finishing, sampling to clean the sample suction needle, can reuse to guarantee it, process is as follows: the tip portion of sampling probe returns in the purge chamber, cleaning fluid enters stopple coupon 9 through outer samples pipeline 5, the sampling passage is cleaned, clean the thief hole 14 of back waste liquid on needle point 11 and enter in the purge chamber; Cleaning fluid enters snorkel 10 through aeration pipe outside road 4 simultaneously, and venting channels is cleaned after the air hole 15 on the needle point 11 enters in the purge chamber; Cleaning to the suction needle periphery wall is to finish in the purge chamber by the cleaning fluid that aeration pipe outside road 4 directly enters in the purge chamber; When cleaning, all waste liquids that flow in the purge chamber are all discharged through discharge opeing interface 6.
After cleaning is finished, dry up to guarantee down the accuracy of sub-sampling suction needle; The flow process that dries up to the periphery wall of first, second passage of suction needle and tip portion is identical with the flow process of cleaning, and what only feed is air, and the discharge of last gas is that the opening through top, purge chamber is passed in the atmosphere.
See also Figure 14, it is second embodiment of the present utility model, the key distinction of this embodiment and first embodiment is: needle point 11 ' is cancelled first, second cavity, and snorkel 10 ' and stopple coupon 9 ' are near one section bending of needle point, the bending segment 101 ', 91 ' of this snorkel 10 ' and stopple coupon 9 ' inserts respectively and is fixed in the air hole of offering on the sleeve pipe and thief hole, and promptly venting channels and sampling passage are realized by snorkel and stopple coupon respectively.In the present embodiment, carry out smooth processing to the tubule exposed portions serve at air hole on the sleeve pipe and thief hole place and handle, remove the part of outstanding sleeve pipe periphery wall.Certainly, also can only cancel a cavity on the needle point.
See also Figure 15, it is the 3rd embodiment of the present utility model, the key distinction of this embodiment and first embodiment is: this sleeve pipe 8 ' is divided into three sections, the inside and outside footpath of three sections sleeve pipes all increases gradually, one section of its medium-small diameter joins fixingly with needle point, and wherein large diameter one section joins fixing with fixed block.See also Figure 16, it is the 4th embodiment of the present utility model, this embodiment mainly but is not with first embodiment: this sleeve pipe 8 " internal diameter identical; a big end is little but external diameter is an end; end that this external diameter is less and needle point join fixing, and an end and fixed block that external diameter is bigger join fixing.
See also Figure 15, it is the 5th embodiment of the present utility model, and the key distinction of this embodiment and first embodiment is: described tip 18 ' is for conical.
In the utility model, this sample sampling probe has following characteristics:
1. there are independently venting channels and sampling passage in the inside of sample suction needle, its formation is a snorkel and the stopple coupon formation that links to each other with first, second passage of needle point inside respectively, the cross section of this snorkel, stopple coupon and needle point bar portion is not limited to circle, also can be ellipse etc.;
2. the sample suction needle is to realize by a sleeve pipe, two tubules (stopple coupon and snorkel) and the combination of needle point, two tubules are inserted in the sleeve pipe, the cross sectional shape of this sleeve pipe is not limited to circle, also can be other shape, but this sleeve pipe need be consistent with the cross sectional shape of needle point;
3. the inside of the needle point made of pole is formed with two passages, and an outlet of passage is not having on the end face of tip, and another exports on periphery wall, and the tip of this needle point is intersected by at least 3 scarves and formed, and needle point can not be circular also.
4. inside of each combination passage is smooth at each joint, or the junction of the endoporus of the inner passage on needle point and tubule does not have tangible step at least.
In the present embodiment, this suction needle is easy to processing by three tube-like pieces and a pole (needle point) be combined into, greatly reduces manufacturing cost.Under the condition of same outer diameter as, rigidity of the present invention is better than prior art.Inner passage of the present invention (venting channels and sampling passage) is level and smooth curved surface, compares easy cleaning with existing scheme, has avoided the cross pollution in the repeated use process.Needle body of the present invention is a round section, and the sealing to outer surface when cleaning realizes easily.Two tubules of the present invention can adopt different diameters as required, and can not influence processing, also can not change the outer shape of needle body, and then can not influence its usability.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design; can also make some simple deduction or replace, all should be considered as belonging to the definite scope of patent protection of claims that the utility model is submitted to.
Claims (9)
- One kind the sampling suction needle, it is characterized in that: comprise needle body, stopple coupon and snorkel, the front end of this needle body has the tip, this needle body is provided with from the recessed cavity of its end face axial and is located at air hole and thief hole on this needle body perisporium, this snorkel and stopple coupon are filled in cavity side by side, and the front end of this snorkel and stopple coupon links to each other with thief hole with air hole by separating first, second passage that is provided with respectively.
- 2. according to the described sampling suction needle of claim 1, it is characterized in that: described cavity comprises by separated first, second cavity in next door, this first cavity is made up of the first passage that is connected and first installation cavity, this second cavity is made up of the second channel that is connected and second installation cavity, the front end of this snorkel and stopple coupon is individually fixed in this first, second installation cavity, and this air hole and thief hole connect with first, second passage respectively.
- 3. according to the described sampling suction needle of claim 2, it is characterized in that: the internal diameter of described first, second installation cavity respectively with the external diameter of snorkel and stopple coupon coupling, the internal diameter of this first, second passage respectively with the internal diameter coupling of snorkel and stopple coupon.
- 4. according to the described sampling suction needle of claim 2, it is characterized in that: described needle body comprises needle point and sleeve pipe, this needle point is made up of tip and bar portion, the periphery wall of this bar portion has step, this step place is fixed in this sleeve pipe socket, this first, second cavity is located at this bar portion, and this air hole and thief hole all are located on the perisporium of this bar portion.
- 5. according to the described sampling suction needle of claim 1, it is characterized in that: described snorkel and stopple coupon all have bending segment, the bending segment of this snorkel and stopple coupon inserts respectively and is fixed in air hole and the thief hole, and the bending segment of this snorkel and stopple coupon is respectively first, second passage.
- 6. according to the described sampling suction needle of claim 5, it is characterized in that: described needle body is made up of needle point and sleeve pipe, this needle point is made up of tip and bar portion, the periphery wall of this bar portion has step, this step place is fixed in the socket of this sleeve pipe, and this cavity axially runs through this sleeve pipe, and this air hole and thief hole are located on this sleeve pipe and are all connected with this cavity.
- 7. according to claim 4 or 6 described sampling suction needle, it is characterized in that: an end of described sleeve pipe is fixed on the needle point, its other end is fixed on the fixed block, and corresponding snorkel and stopple coupon are respectively equipped with snorkel cavity and stopple coupon cavity on this fixed block.
- 8. according to the described sampling suction needle of claim 1, it is characterized in that: described air hole is in the axial direction than the more close tip of thief hole.
- 9. according to the described sampling suction needle of claim 1, it is characterized in that: described tip is formed by three scarves at least or is conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620017346 CN2938104Y (en) | 2006-08-01 | 2006-08-01 | Sampling suction needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620017346 CN2938104Y (en) | 2006-08-01 | 2006-08-01 | Sampling suction needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2938104Y true CN2938104Y (en) | 2007-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620017346 Expired - Lifetime CN2938104Y (en) | 2006-08-01 | 2006-08-01 | Sampling suction needle |
Country Status (1)
| Country | Link |
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| CN (1) | CN2938104Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8266973B2 (en) | 2007-10-23 | 2012-09-18 | Shimadzu Corporation | Automatic sampler and method for injecting sample |
| CN102841194A (en) * | 2011-06-20 | 2012-12-26 | 江苏美诚生物科技有限公司 | Novel hand-operated sample introduction needle |
| CN103472243A (en) * | 2012-06-06 | 2013-12-25 | 北京普源精电科技有限公司 | Automatic sampler and sampling needle |
| CN104406822A (en) * | 2014-12-08 | 2015-03-11 | 重庆南方数控设备有限责任公司 | Puncture sampling device for hemorheology detection |
| CN107971303A (en) * | 2016-10-25 | 2018-05-01 | 上海安杰环保科技股份有限公司 | A kind of sample introduction needle cleaning system |
| CN114414308A (en) * | 2022-03-28 | 2022-04-29 | 深圳市帝迈生物技术有限公司 | Sampling device and sampling method of sample analyzer |
-
2006
- 2006-08-01 CN CN 200620017346 patent/CN2938104Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8266973B2 (en) | 2007-10-23 | 2012-09-18 | Shimadzu Corporation | Automatic sampler and method for injecting sample |
| CN101419204B (en) * | 2007-10-23 | 2013-03-27 | 株式会社岛津制作所 | Automatic sampler and method for injecting sample |
| CN102841194A (en) * | 2011-06-20 | 2012-12-26 | 江苏美诚生物科技有限公司 | Novel hand-operated sample introduction needle |
| CN103472243A (en) * | 2012-06-06 | 2013-12-25 | 北京普源精电科技有限公司 | Automatic sampler and sampling needle |
| CN103472243B (en) * | 2012-06-06 | 2016-08-03 | 北京普源精仪科技有限责任公司 | A kind of automatic sampler and sampling probe |
| CN104406822A (en) * | 2014-12-08 | 2015-03-11 | 重庆南方数控设备有限责任公司 | Puncture sampling device for hemorheology detection |
| CN107971303A (en) * | 2016-10-25 | 2018-05-01 | 上海安杰环保科技股份有限公司 | A kind of sample introduction needle cleaning system |
| CN114414308A (en) * | 2022-03-28 | 2022-04-29 | 深圳市帝迈生物技术有限公司 | Sampling device and sampling method of sample analyzer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070822 |
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| EXPY | Termination of patent right or utility model |