CN101099969A - Wiper for cleaning sampling needle - Google Patents
Wiper for cleaning sampling needle Download PDFInfo
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- CN101099969A CN101099969A CNA2006100213592A CN200610021359A CN101099969A CN 101099969 A CN101099969 A CN 101099969A CN A2006100213592 A CNA2006100213592 A CN A2006100213592A CN 200610021359 A CN200610021359 A CN 200610021359A CN 101099969 A CN101099969 A CN 101099969A
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Abstract
The swab unit for cleaning sampling needle includes one swab body possessing one axial cavity, and one first fluid flow tube and one second fluid flow tube mounted onto and communicated with the swab body. The first fluid flow tube and the second fluid flow tube have some height difference in the gravity direction. The swab body has one first ring cavity and one second ring cavity around the axial cavity and with one hole separately. The first fluid flow tube, the first ring cavity and the axial cavity are communicated successively; and so do the second fluid flow tube, the second ring cavity and the axial cavity. The swab unit with ring cavities can eliminate the residual blood sample and dry the cleaning liquid completely in high cleaning effect.
Description
Technical field
The present invention relates to the blood cell analysis apparatus field, especially about a kind of swab that is applied in the cellanalyzer.
Background technology
In the cellanalyzer use, after from test tube, drawing blood sample, can be on the inside and outside surface of sampling needle and sample distribute in the passage and stay blood sample, before gathering next sample analysis, need clean up these residual blood samples, to avoid that the detection of next blood sample is brought influence.
In order to reach cleaning requirement, generally the operation principle of Cai Yonging is will be adsorbed on blood sample in the passage to be cleaned with the cleaning fluid that flows to wash out and take away.This purging system generally includes:
A) one or more inside can produce the container of the splendid attire cleaning fluid of normal pressure:
For system provides cleaning fluid and provides power for the driving of cleaning fluid.
B) can produce the returnable of negative pressure:
Be used to absorb the waste liquid after cleaning with splendid attire.
C) cleaning fluid flushing and gathering-device (below be referred to as " swab "):
When cleaning the sampling needle outer wall, along with move relative of swab with sampling needle, it will be ejected on the contaminated sampling needle outer surface with certain speed from the cleaning fluid of malleation liquid storage container, again the cleaning fluid after the flushing is collected back negative suction waste liquid tank simultaneously, and dry sampling needle outer surface; Simultaneously, also will clean the cleaning fluid negative suction waste liquid tank of described channel inner surface.
D) connecting line and valve:
Pipeline couples together each parts, and realizes cleaning procedure by valve controlling flow body passage.
E) swab and sampling needle transmission mechanism:
Relatively moving and upper-lower position control of swab and sampling needle is provided.
Sampling needle outer surface after this purging system requires to clean is except that must not residual blood sample, the drying that will try one's best also, in the process of the inside and outside surface of cleaning sampling needle and sampling conduit the phenomenon of leakage must not be arranged simultaneously, therefore, the key of native system is the service behaviour of swab.
The existing swab structure such as the patent No. be 5,592,959 and the patent No. be that 5,408,891 United States Patent (USP) discloses.
The patent No. is that the swab characteristics in 5,592,959 the United States Patent (USP) are:
The cavity that a, sampling needle pass through is divided into two sections, and the hypomere cavity diameter is bigger, links to each other with inlet, and the epimere cavity diameter is less, links to each other with leakage fluid dram.Its shortcoming is the clearance control difficulty of sampling needle and swab inner chamber epimere, when cleaning the sampling needle outer surface, if excesssive gap will enter too much air from the swab upper end, makes its suction deficiency to cleaning fluid, causes leakage; If the gap is too small, sampling needle can stop up leakage fluid dram again, makes resistance become big, also can cause the suction deficiency and leakage.Therefore the dimensional requirement strictness of epimere cavity, and not strong to the variation adaptive capacity of cleaning fluid flow and suction pressure.
B, in order to improve cleaning performance, inlet and leakage fluid dram are arranged in the both sides of sampling needle, and an opening is respectively arranged.Its shortcoming is that the lip-deep blood sample of sampling needle of inlet one side dorsad is not easy to be rinsed totally, and the lip-deep cleaning fluid of sampling needle of leakage fluid dram one side is not easy to be blotted dorsad simultaneously; In addition, advance, leakage fluid dram is distributed in both sides and is unfavorable for layout, it is bigger to take up room, and outward appearance is irregular.
The patent No. is that the swab characteristics in 5,408,891 the United States Patent (USP) are:
The cavity that a, sampling needle pass through is divided into four sections, with 5,592, what the swab in 959 patents was different is, between the bigger cavity of the less cavity of epimere diameter and hypomere diameter, increased by one section acute angle conical surface transition, increased by one section diameter cavity of some greatly again at the leakage fluid dram place, avoided the shortcoming of leakage fluid dram place cavity diameter dimensional requirement strictness, but the cavity and the acute angle conical surface transition section manufacture difficulty of fluffing suction acting section are bigger.
B, inlet and leakage fluid dram also are the both sides that are arranged in sampling needle, have the drawback identical with above-mentioned patent.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiencies in the prior art, and a kind of swab that can improve the sampling needle cleaning performance is provided.
The technical solution adopted for the present invention to solve the technical problems is: this Wiper for cleaning sampling needle comprises the swab body, first fluid flow tube and second fluid flow tube, this swab body has the cavity that axially runs through, this is first years old, second fluid flow tube radially is installed on this swab body and all communicates with this cavity, and this is first years old, second fluid flow tube has difference in height on gravity direction, described swab body also has first annular chamber, this first annular chamber is around this cavity, the chamber wall of this cavity is provided with first hole, this first fluid flow tube, first annular chamber, first hole and this cavity are communicated with in turn.
Described swab body also has second annular chamber, and this second annular chamber also is provided with second hole around this cavity on the chamber wall of this cavity, and this second fluid flow tube, second annular chamber, second hole and this cavity are communicated with in turn.
Described cavity comprises the 3rd, second, first cavity that connection in turn and diameter increase successively, this first annular chamber is around this first cavity, this first hole is located on the chamber wall of this first cavity, and this second annular chamber is around this second cavity, and this second hole is located on the chamber wall of this second cavity.
Reach between second, first cavity all by the chamfering transition between described the 3rd, second cavity.
Described first annular chamber is concentric with first cavity, and second annular chamber is concentric with second cavity.
Described first hole and second hole all have two at least, and the sectional area summation in each first hole and each second hole is not more than the sectional area of its corresponding fluid flow tube that is communicated with.
The long-pending sectional area that is not less than its corresponding fluid flow tube that is communicated with of the overflow section of described annular chamber.
The upper edge of contiguous its corresponding annular chamber that is communicated with in the position in described first hole and second hole.
Angle between the axis of described first, second fluid flow tube is an acute angle.
The axis of described first, second fluid flow tube is parallel.
The invention has the beneficial effects as follows, 1) according to the difference that cleaning performance is required, when first annular chamber is communicated with the fluid flow tube that is used for the cleaning fluid inflow, cleaning fluid washes by the outer surface of at least two holes to sampling needle, can clean the blood sample that remains on the sampling needle whole outer surface completely, thereby improved cleaning performance, when second annular chamber is communicated with the fluid flow tube that is used for discharge opeing, discharging tube can absorb the waste liquid on the sampling needle whole outer surface by at least two holes, drying effect is better, and this also makes the cleaning performance of sampling needle be improved; 2) by first, second annular chamber is set simultaneously, both can thoroughly clean residual blood sample, also can blot cleaning fluid fully, thereby improve the effect of cleaning; 3) by the cavity body structure of syllogic is set, be difficult for gas leakage, save the gas consumption of negative pressure waste liquid tank, and the accuracy of manufacture is met easily also, strengthened variation adaptive capacity to cleaning fluid flow and suction pressure; 4) be acute angle by the angle that guarantees first, second fluid flow tube axis, can make these two fluid flow tubes be positioned at the same side of this swab, thereby not only pipe arrangement is convenient, and it be little to take up room.
Description of drawings
Fig. 1 is the structure principle chart that contains the sampling needle purging system of swab of the present invention.
Fig. 2 is the cutaway view of swab of the present invention.
Fig. 3 is the cutaway view of second specific embodiment of swab of the present invention.
Fig. 4 is the cutaway view of the 3rd specific embodiment of swab of the present invention.
The specific embodiment
See also Fig. 1 to Fig. 2, Wiper for cleaning sampling needle 11 of the present invention comprises swab body 35, first fluid flow tube 31 and second fluid flow tube 32.These swab body 35 middle positions axially run through the formation cavity, the feed tube 31 of this first fluid flow tube 31 for being used for flowing into for cleaning fluid, this second fluid flow tube 32 is for being used to discharge the discharging tube 32 of the waste liquid after the cleaning, the sectional area of the sectional area ratio discharging tube 32 of this feed tube 31 is little, this feed tube 31 and discharging tube 32 levels (be swab body radially) are installed on this swab body 35 and all communicate with this cavity, and on gravity direction, this feed tube 31 is positioned at the below of this discharging tube 32.Certainly, the center cavity axis that is not limited to swab 11 is only placed along gravity direction, also can or turn 180 ° of uses with swab 11 inclinations.
The cavity of this swab body passes for sampling needle 12, it is divided into three sections, be respectively the 3rd, second and first cavity 22,23,24, three, second and first cavity, 22,23,24 coaxial lines, and on gravity direction, the 3rd, second and first cavity 22,23,24 is communicated with successively and diameter increases successively.Three, pass through chamfering 29 and chamfering 30 transition respectively between second cavity and between second, first cavity, to reduce resistance and residual contamination.The 3rd cavity 22 is used for the motion of sampling needle 12 is play the guiding role, its diameter is bigger slightly than the external diameter of sampling needle 12, sampling needle can slide up and down smoothly along the 3rd cavity 22, do not enter but do not have too much air, avoided discharging tube the waste liquid in first, second cavity 24,23 to be absorbed the deficiency of strength.The diameter of second cavity 23 is than the slightly larger in diameter of the 3rd cavity 22, and it both can allow all cleaning fluids pass through smoothly, can guarantee again and sampling needle 12 between form the air stream of enough flow velocitys so that the outer surface of sampling needle is carried out drying.The diameter of first cavity 24 is bigger than the diameter that sampling needle 12 outer surfaces are adsorbed with behind the blood sample, blood sample can not be bonded on the lower surface of swab in cleaning process like this, though the diameter of this first cavity is bigger slightly than the diameter of second cavity, to prevent that also first cavity from producing drop because of diameter is excessive.
This swab body 35 also has first annular chamber 26 and second annular chamber 25, this first annular chamber 26 around this first cavity 24 and with its concentric, the chamber wall 21 of this first cavity 24 is provided with first hole of radially running through 28, this first hole 28 has four, it is evenly distributed on this chamber wall 21, and this first hole 28 is communicated with this first annular chamber 26 and first cavity 24, the cleaning fluid that feed tube 31 is squeezed into is introduced into first annular chamber 26, by these equally distributed four first holes 28 cleaning fluid evenly is injected on the outer surface of sampling needle 12 again, the outer surface of sampling needle 12 is washed fully.This second annular chamber 25 is around this second cavity 23 and concentric with it, the chamber wall 21 of this second annular chamber 23 is provided with second hole of radially running through 27, this second hole 27 has four, it is evenly distributed on this chamber wall 21, and this second hole 27 is communicated with this second annular chamber 25 and second cavity 23, discharging tube 32 is communicated with second annular chamber 25, and fully blots the waste liquid that is adsorbed on after the cleaning on sampling needle 12 outer surfaces by these equally distributed four second holes 27.
Owing to adopted ring cavity structure, inlet 31 and leakage fluid dram 32 do not have the relative position requirement, can be provided with arbitrarily as required, in order to reduce the shared volume of this swab and to make appearance looks elegant, the axis of this feed tube 31 is an acute angle with the angle that axis became of discharging tube 32, and preferably this feed tube 31 is parallel with the axis of discharging tube 32.In order to make cleaning fluid to produce certain and uniform impulsive force to the sampling needle surface, with the effect that guarantees to clean, the sectional area summation in each first hole 28 should be not more than the sectional area of feed tube 31, and the sectional area summation in each second hole 27 should be not more than the sectional area of discharging tube 32.The long-pending sectional area that is not less than discharging tube 32 of the overflow section of second annular chamber 25, the long-pending sectional area that is not less than feed tube 31 of the overflow section of first annular chamber 26.Swab is when off working state, in order to prevent that the liquid of staying in first, second annular chamber 26,25 from causing and dropping liquid owing to the gravity effect, second hole 27 should be opened in the position near second annular chamber, 25 upper edges, and first hole 28 also is opened in the position near first annular chamber, 26 upper edges.
The operation principle of sampling needle purging system with this swab is as follows: this swab 11 links to each other with tractor 19, this tractor 19 can drive swab 11 and move back and forth along the axis direction of sampling needle 12, and its power resources are in stepper motor 20 (also can be other forms of power source).The outlet one tunnel that the malleation fluid reservoir 13 of cleaning fluid is housed links to each other with the feed tube of swab 11 through stop valve 16, and another way outlet links to each other with the port a of triple valve 15.Sampling needle 12 links to each other with the port b of triple valve 15 through gauge assembly 21, and triple valve 15 can be realized the pipeline and 13 conductings of malleation fluid reservoir of syringe 18 by the switching to port a and port b, or the pipeline of syringe 18 and sampling needle 12 conductings.Negative pressure waste liquid tank 14 links to each other with the discharging tube of swab 11 through stop valve 17.
When cellanalyzer need be taken a blood sample, swab 11 is in upper (position of swab shown in Fig. 1 dotted line) of sampling needle 12, triple valve 15 switches to port b, the pipeline of syringe 18 and sampling needle 12 conductings, start sampling routine, at this moment syringe 18 work of part cleaning fluid are housed, blood sample (is at this moment controlled the soakage of blood sample in the sampling conduit of sampling needle 12 suction gauge assemblies 21, must not be drawn onto in the syringe 18), just entered cleaning process after the sampling.At first, stop valve 17 conductings, under the effect of negative pressure waste liquid tank 14, air is inhaled into waste liquid tank 14 from the lower end of swab 11 through discharging tube, thereby form one continuous air-flow, stop valve 16 conductings, cleaning fluid in the malleation fluid reservoir 13 is ejected at the outer surface of sampling needle 12, the blood sample of absorption is rinsed well, waste liquid is along with the air-flow of swab 11 leakage fluid drams is inhaled into negative pressure waste liquid tank 14, simultaneously tractor 19 is being with swab 11 to move to the nextly from upper, and all outer surfaces of sampling needle 12 just has been cleaned totally like this; Then, swab 11 is in the next stopping (position of swab shown in Fig. 1 solid line), syringe 18 is to the extrapolation cleaning fluid, with remain in the sampling needle and gauge assembly 21 sampling conduits in blood sample get from sampling needle 12 lower ends, at this moment stop valve 16 and 17 still is in conducting state, the feed tube of swab 11 is also in hydrojet, and therefore the waste liquid of getting from sampling needle 12 can not pollute the lower semisection of swab 11, and all simultaneously waste liquids also are inhaled into negative pressure waste liquid tank 14.After cleaning finishes, syringe 18 quits work, stop valve 16 is closed, the feed tube of swab 11 stops hydrojet, stop valve 17 keeps conducting, tractor 19 is being with swab 11 to move up from the next, the a small amount of cleaning fluid that is adsorbed on sampling needle 12 outer surfaces is blotted, arriving upper back swab 11 stops to move, stop valve 17 is closed, triple valve 15 switches to port a, and syringe 18 begins from malleation fluid reservoir 13 to suck flushing sampling needle inner surface and the cleaning fluid used of sampling conduit next time, stops after measuring.Sampling and cleaning EP (end of program) like this.
See also Fig. 3, it is second specific embodiment of the present invention.If it is strict cleaning fluid to be remained in the blood sample of sampling needle outer surface, when blotting cleaning fluid less demanding, can cancels second annular chamber that is communicated with discharging tube, and this discharging tube 32 and second cavity 23 are directly connected.
See also Fig. 4, it is the 3rd specific embodiment of the present invention.If can loosen, but when absorbing sampling needle outer surface waste liquid and reach clean effect, can cancel first annular chamber that is communicated with feed tube, and the feed tube 31 and first cavity 24 are directly connected by strictness control to the requirement of cleaning residual blood sample.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of being submitted to.
Claims (10)
1. Wiper for cleaning sampling needle, comprise swab body, first fluid flow tube and second fluid flow tube, this swab body has the cavity that axially runs through, this first, second fluid flow tube radially is installed on this swab body and all communicates with this cavity, and this first, second fluid flow tube has difference in height on gravity direction, it is characterized in that: described swab body also has first annular chamber, this first annular chamber is around this cavity, the chamber wall of this cavity is provided with first hole, and this first fluid flow tube, first annular chamber, first hole and this cavity are communicated with in turn.
2. according to the described Wiper for cleaning sampling needle of claim 1, it is characterized in that: described swab body also has second annular chamber, this second annular chamber is around this cavity, also be provided with second hole on the chamber wall of this cavity, this second fluid flow tube, second annular chamber, second hole and this cavity are communicated with in turn.
3. according to the described Wiper for cleaning sampling needle of claim 2, it is characterized in that: described cavity comprises the 3rd, second, first cavity that connection in turn and diameter increase successively, this first annular chamber is around this first cavity, this first hole is located on the chamber wall of this first cavity, this second annular chamber is around this second cavity, and this second hole is located on the chamber wall of this second cavity.
4. according to the described Wiper for cleaning sampling needle of claim 3, it is characterized in that: reach between second, first cavity all by the chamfering transition between described the 3rd, second cavity.
5. according to the described Wiper for cleaning sampling needle of claim 2, it is characterized in that: described first annular chamber is concentric with first cavity, and second annular chamber is concentric with second cavity.
6. according to any described Wiper for cleaning sampling needle among the claim 2-5, it is characterized in that: described first hole and second hole all have two at least, and the sectional area summation in each first hole and each second hole is not more than the sectional area of its corresponding fluid flow tube that is communicated with.
7. according to any described Wiper for cleaning sampling needle among the claim 2-5, it is characterized in that: the long-pending sectional area that is not less than its corresponding fluid flow tube that is communicated with of the overflow section of described annular chamber.
8. according to any described Wiper for cleaning sampling needle among the claim 2-5, it is characterized in that: the upper edge of contiguous its corresponding annular chamber that is communicated with in the position in described first hole and second hole.
9. according to any described Wiper for cleaning sampling needle among the claim 1-5, it is characterized in that: the angle between the axis of described first, second fluid flow tube is an acute angle.
10. according to the described Wiper for cleaning sampling needle of claim 9, it is characterized in that: the axis of described first, second fluid flow tube is parallel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610021359A CN100581663C (en) | 2006-07-04 | 2006-07-04 | Wiper for cleaning sampling needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610021359A CN100581663C (en) | 2006-07-04 | 2006-07-04 | Wiper for cleaning sampling needle |
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| CN101099969A true CN101099969A (en) | 2008-01-09 |
| CN100581663C CN100581663C (en) | 2010-01-20 |
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| CN102072962A (en) * | 2011-01-31 | 2011-05-25 | 深圳市蓝韵实业有限公司 | Device for washing sampling needle of hematology analyzer |
| CN102269768A (en) * | 2010-12-31 | 2011-12-07 | 深圳迈瑞生物医疗电子股份有限公司 | Cleaning swab and application thereof to haemal cell analyzer |
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| CN104107815A (en) * | 2013-04-16 | 2014-10-22 | 深圳迈瑞生物医疗电子股份有限公司 | Cleaning device of sampling needle, cleaning method of sampling needle and sample analyzing device |
| CN103433256A (en) * | 2013-09-04 | 2013-12-11 | 深圳市锦瑞电子有限公司 | Cleaning device and cleaning method for sampling needle of specific protein analysis meter |
| CN103433256B (en) * | 2013-09-04 | 2016-04-20 | 深圳市锦瑞电子有限公司 | Specific protein analyzer sampling needle cleaning device and method |
| CN105327907A (en) * | 2015-12-14 | 2016-02-17 | 重庆南方数控设备有限责任公司 | Vortex type needle washing device for cleaning sampling needles |
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Effective date of registration: 20180619 Address after: 518057 the 1-4 floor of MINDRAY building, science and technology south twelve Road, Nanshan District high tech Industrial Park, Shenzhen, Guangdong. Co-patentee after: SHENZHEN MINDRAY SCIENTIFIC Co.,Ltd. Patentee after: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS Co.,Ltd. Address before: 518057 MINDRAY science and technology south twelve road MINDRAY high tech Industrial Park, Shenzhen, Guangdong Patentee before: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS Co.,Ltd. |
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Application publication date: 20080109 Assignee: Shenzhen Mindray Animal Medical Technology Co.,Ltd. Assignor: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS Co.,Ltd. Contract record no.: X2022440020009 Denomination of invention: Sampling needle cleaning swab Granted publication date: 20100120 License type: Common License Record date: 20220804 |