CN212442399U - Sampling needle swab capable of being filled with reagent - Google Patents
Sampling needle swab capable of being filled with reagent Download PDFInfo
- Publication number
- CN212442399U CN212442399U CN202020617144.2U CN202020617144U CN212442399U CN 212442399 U CN212442399 U CN 212442399U CN 202020617144 U CN202020617144 U CN 202020617144U CN 212442399 U CN212442399 U CN 212442399U
- Authority
- CN
- China
- Prior art keywords
- sampling needle
- sealing ring
- reagent
- swab
- filled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The application discloses can annotate sampling needle swab of reagent, comprising a main body, the sealing ring, gasket and O type sealing washer, the main part is provided with inlet and liquid outlet, the inside liquid channel who link up that is provided with of main part, the main part upper end is provided with the recess that holds gasket and O type sealing washer, be provided with the cylindrical pore that allows the sampling needle to pass through in the middle of the sealing ring, pore upper end and sampling needle clearance fit, lower extreme and sampling needle interference fit reach sealed effect through gasket and O type sealing washer between sealing ring and the main part. Through setting up the sealing ring, can make swab upper end portion and sampling needle sealed, therefore this swab not only can realize wasing the effect of sampling needle, can also make reagent along the subassembly that the sampling needle outer wall got into need filling reagent through inlet filling reagent, has reduced the use of some liquid way control elements, is favorable to reduce cost, simplifies program control.
Description
Technical Field
The invention relates to the technical field of medical detection equipment, in particular to a sampling needle swab for a blood analysis instrument.
Background
In medical detection equipment technical field, especially blood analysis instrument, the sampling needle absorbs the requirement of sample back for reaching washing sampling needle, generally injects into liquid back rethread swab upper end liquid outlet through swab lower extreme inlet and siphons away the waste liquid to realize the washing of sampling needle. The sampling needle absorbs the sample and then needs to distribute the sample to the corresponding detection assembly, and then reagent is added to dilute in a certain proportion to meet the test condition, and the requirement of reagent filling is met above the related detection assembly by using an independent liquid filling channel, and the detection assembly is usually two or more groups, so that two or more groups of liquid filling channels are needed, the only function of the liquid filling channel is to fill the reagent, and the structure needs an independent liquid path and a liquid path control element, thereby undoubtedly generating higher cost and more complex liquid path program control.
Disclosure of Invention
The invention mainly solves the problems of the prior art and provides a sampling needle swab which is simple to control and low in manufacturing cost and can be filled with a reagent.
The swab comprises a main body, a sealing ring, a gasket and an O-shaped sealing ring, wherein the gasket and the O-shaped sealing ring are sequentially arranged on the sealing ring, the main body and the sealing ring are fixedly connected through screws, and the sealing ring is in interference fit with a sampling needle to ensure that the upper end of the swab is sealed.
The main part is provided with inlet and liquid outlet, and the main part is inside to be provided with the liquid channel who link up, and the main part upper end is provided with the recess that holds gasket and O type sealing washer.
The sealing ring is made of corrosion-resistant high polymer material and does not react with reagents such as a sample, a cleaning solution, a diluent and the like.
The material of the sealing ring has self-lubricating property, and the sampling needle can slide in the sealing ring while being in interference fit with the sealing ring.
The middle of the sealing ring is provided with a cylindrical pore passage allowing the sampling needle to pass through, the upper end of the pore passage is in clearance fit with the sampling needle, and the lower end of the pore passage is in interference fit with the sampling needle, so that friction can be reduced as much as possible while the pore passage is sealed with the sampling needle.
The outer diameter of the bottom end of the sealing ring is smaller than the diameter of the main body liquid channel.
The material of the sealing ring has high wear resistance, and the sampling needle can rub against the sealing ring repeatedly for millions of times.
The O-shaped sealing ring is made of fluororubber and has corrosion resistance.
A chamfer is arranged at one end of the gasket.
The reagent filling channel is designed on the sampling needle swab, 1) the sampling needle swab is usually arranged on the sampling needle assembly, and the sampling needle assembly can move above a plurality of detection assemblies according to requirements, so that the reagent filling requirements of a plurality of groups of detection assemblies can be met by only arranging one group of filling channel; 2) the sampling needle swab is provided with a liquid inlet and a liquid outlet, and the cleaning requirement of the sampling needle is met, so that the upper part of the swab is sealed, and a reagent can flow downwards along the sampling needle by independently controlling the liquid inlet through a liquid channel of the swab, thereby achieving the purpose of reagent filling. The invention realizes reagent filling of a plurality of groups of detection components under the condition of not increasing related reagent filling liquid paths, greatly saves the cost of the liquid paths, and has certain simplification effect on the control of liquid path programs.
Drawings
Fig. 1 and 2 are schematic sectional views of the swab of the present invention.
Reference numerals:
1-sealing ring 2-main body 3-O type sealing ring 4-gasket.
Detailed Description
The present invention provides a sampling needle swab capable of being filled with a reagent, and the present invention will be described in further detail below in order to make the object, the technical means, and the effect of the present invention clearer and clearer. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
As shown in FIG. 1, the present invention provides a sampling needle swab capable of being filled with a reagent, which comprises a body 2, a sealing ring 1, an O-ring 3 and a gasket 4. The body 2 is provided with two liquid passages, the lower part is the inlet, the upper part is the liquid outlet, a through liquid passage is arranged in the middle of the body 2, reasonable negative pressure is applied to the liquid outlet usually, the liquid passage in the body 2 forms a negative pressure cavity, liquid enters the body 2 through the inlet, the body 2 is removed through the liquid outlet under the action of the negative pressure, and the effect of cleaning the sampling needle is achieved.
Sealing ring 1 is provided with the cylinder type passageway that link up, can hold the sampling needle and pass through, 1 upper end of sealing ring and sampling needle clearance fit, lower extreme and sampling needle interference fit, and the extremely thin that 1 bottom wall thickness of sealing ring set up, the purpose makes the sampling needle both can reach sealed effect rather than interference fit, can reduce frictional force again as far as possible, is favorable to the sampling needle to move smoothly from top to bottom. Gasket 4 and O type sealing washer 3 install in proper order at the sealing ring lower extreme, then pack into body 2, sealing ring 1 and body 2 use the fix with screw. O type sealing washer 3 is full of the body 1 upper end recess under the extrusion through sealing ring 1 and body 2, reaches sealed body 2 and the 1 effect of sealing ring, and O type sealing washer 3 itself has good elasticity, tightly embraces sealing ring 1 bottom, is favorable to adjusting the sealed effect of 1 bottom of sealing ring and sampling needle.
As shown in fig. 2, when the sampling needle moves to the lower part of the swab, the liquid inlet can be controlled independently, and liquid flows into the liquid inlet from the liquid inlet and flows into the required detection assembly along the outer wall of the sampling needle under the action of gravity.
The key point of the embodiment is that the swab is sealed by the upper end sealing ring, so that the reagent can be directly filled into the required detection assembly through the swab; in addition, the following rationalization design is further performed in the present embodiment: the adoption is to the rationalization design of seal ring structure, and seal ring upper end and sampling needle clearance fit, lower extreme and sampling needle interference fit, the extremely thin of the wall thickness setting of sealing ring bottom is favorable to guaranteeing the sealed effect between sealing ring and the sampling needle under the prerequisite of frictional force as far as possible, is favorable to that the sampling needle up-and-down motion is smooth and easy.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a can annotate sampling needle swab of reagent, includes main part, sealing ring, gasket and O type sealing washer are installed in proper order on the sealing ring, the main part adopts the screw connection fixed with the sealing ring, and its characterized in that sealing ring and sampling needle interference fit guarantee that the swab upper end is sealed.
2. A sampling needle swab capable of being filled with a reagent as claimed in claim 1, wherein the main body is provided with a liquid inlet and a liquid outlet, a liquid passage is formed in the main body, and a groove for accommodating the gasket and the O-ring is formed at the upper end of the main body.
3. The sampling needle swab capable of being filled with the reagent as set forth in claim 1, wherein the sealing ring is made of a corrosion-resistant polymer material and does not react with the sample, the cleaning solution and the diluent.
4. A sampling needle swab capable of being filled with a reagent according to claim 3, wherein the sealing ring is made of a material which is self-lubricating and allows the sampling needle to slide therein while being in interference fit therewith.
5. The sampling needle swab capable of being filled with the reagent as claimed in claim 4, wherein the sealing ring is provided with a cylindrical hole allowing the sampling needle to pass through, the upper end of the hole is in clearance fit with the sampling needle, the lower end of the hole is in interference fit with the sampling needle, and the friction can be reduced as much as possible while the hole is sealed with the sampling needle.
6. A sampling needle swab capable of being filled with a reagent according to claim 5, wherein the outer diameter of the bottom end of the sealing ring is smaller than the diameter of the liquid passage of the main body.
7. A sampling needle swab capable of being filled with a reagent according to claim 6, wherein the sealing ring material itself has high wear resistance.
8. A sampling needle swab capable of being filled with a reagent as set forth in claim 2, wherein the O-ring is made of a fluororubber material and has corrosion resistance.
9. A sampling needle swab capable of being filled with a reagent as set forth in claim 2, wherein the gasket is chamfered at one end thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020617144.2U CN212442399U (en) | 2020-04-22 | 2020-04-22 | Sampling needle swab capable of being filled with reagent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020617144.2U CN212442399U (en) | 2020-04-22 | 2020-04-22 | Sampling needle swab capable of being filled with reagent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212442399U true CN212442399U (en) | 2021-02-02 |
Family
ID=74469052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020617144.2U Active CN212442399U (en) | 2020-04-22 | 2020-04-22 | Sampling needle swab capable of being filled with reagent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212442399U (en) |
-
2020
- 2020-04-22 CN CN202020617144.2U patent/CN212442399U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6526812B2 (en) | Self-washing injection apparatus | |
| CN113759137B (en) | Sample detection device and sample detection method | |
| CN212442399U (en) | Sampling needle swab capable of being filled with reagent | |
| CN105377434A (en) | Cartridge for dispensing fluid, automatic analyzer and method of analyzing biological sample | |
| JPWO2014157505A1 (en) | Sample injection device for flow analysis device, flow analysis device, and hemoglobin component measurement method | |
| CN107918031A (en) | A kind of liquid sample guiding device and the detection device containing the guiding device | |
| CN101664650A (en) | Method and device for dissolving gas in oil | |
| CN114430702A (en) | Micro flow path chip | |
| CN208900445U (en) | Rotating transfer valve | |
| CN205182783U (en) | Micro -fluidic chip anchor clamps | |
| CN108854837A (en) | On-line dilution device | |
| CN217093515U (en) | Reaction device capable of automatically controlling liquid | |
| WO2011145162A1 (en) | Seal structure of passage connecting portion | |
| CN205786322U (en) | A kind of ATP fluoroscopic examination swab | |
| CN105301174A (en) | Reagent titration method and device for microfluidic chip as well as microfluidic chip | |
| CN208679061U (en) | On-line dilution device | |
| CN214348389U (en) | Belt cleaning device of trace sampling needle | |
| CN111929459A (en) | Flow type liquid path system for urine detection | |
| CN215743532U (en) | Multi-specification centrifuge tube adaptive sampling mechanism for digital PCR | |
| CN206348308U (en) | Suitable for the washing device of low pressure glycolated hemoglobin analysis | |
| CN208627927U (en) | Specimen needle cleaning device | |
| CN208555343U (en) | Needle device is washed in a kind of layering | |
| CN202141702U (en) | Liquid phase chromatographic column | |
| CN201075081Y (en) | Intermittent injection sampling device | |
| CN205938476U (en) | Quick fuel filler neck |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |