CN204269594U - A kind of electrochemical test strip - Google Patents
A kind of electrochemical test strip Download PDFInfo
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- CN204269594U CN204269594U CN201420736242.2U CN201420736242U CN204269594U CN 204269594 U CN204269594 U CN 204269594U CN 201420736242 U CN201420736242 U CN 201420736242U CN 204269594 U CN204269594 U CN 204269594U
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- electrode
- barrier layer
- base plate
- test strip
- electrochemical test
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Abstract
The utility model discloses a kind of electrochemical test strip, comprising: base plate, one end of described base plate is sample introduction end; Be arranged at the carbon electrode on described base plate, described carbon electrode comprises electrode and working electrode; Be covered in the hydrophilic layer on described carbon electrode, also comprise the barrier layer be arranged on described base plate, described barrier layer relative to described working electrode, and relative to described to electrode near described sample introduction end, be formed with the gap passed through for blood sample between described barrier layer and described hydrophilic layer.The region at working electrode place is defined as reaction zone; blood sample needed to cover barrier layer before entering reaction zone; clearly; the setting of insulating course slow down the sample introduction speed of blood sample; weaken the impulsive force of blood sample to reaction enzymes; protective reaction enzyme is not broken up, and ensures that blood sample fully can react with reaction enzymes, thus improves the accuracy of working electrode detection.
Description
Technical field
The utility model relates to blood examination field, more particularly, relates to a kind of electrochemical test strip.
Background technology
Please refer to the vertical view of the electrochemical test strip that accompanying drawing 1, Fig. 1 provides for an embodiment of the prior art.Electrochemical test strip comprises base plate 1, the carbon electrode be arranged on base plate 1, the top cover (not shown in FIG.) that is covered in the hydrophilic layer (not shown in FIG.) on carbon electrode and is covered on hydrophilic layer.Electrochemical test strip is divided into two kinds, and a kind of is that carbon electrode in electrochemical test strip comprises blank electrode 4, to electrode 3 and working electrode 2; Another kind is that the carbon electrode in electrochemical test strip only comprises electrode 3 and working electrode 2.Working electrode 2 is attached with the reaction enzymes for reacting with blood sample, the region at working electrode 2 place is reaction zone.Blank electrode 4 for detecting the interfering material in blood sample, for revising the testing result of working electrode 2.One end of base plate 1 is sample introduction end 11, and blood sample enters examination bar from sample introduction end 11, enters reaction zone after contacting with blank electrode 4, and reacts with the reaction enzymes on working electrode 2, and now working electrode 2 just can make detection to blood sample.In the electrochemical test strip not comprising blank electrode 4, blood sample directly enters into reaction zone from sample introduction end 11.
But the sample introduction speed of blood sample is often very fast, and blood sample can enter reaction zone fast from sample introduction end.The blood sample of fast sample can produce impulsive force to the reaction enzymes on working electrode, and the reaction enzymes on working electrode can be broken up, like this, blood sample just fully cannot react with reaction enzymes, and the testing result of working electrode finally can be made to occur larger deviation.In the examination bar that carbon electrode only comprises electrode and working electrode, this phenomenon is more outstanding.
Therefore; how to design a kind of electrochemical test strip; this electrochemical test strip can slow down the sample introduction speed of blood sample; weaken blood sample to the impulsive force of reaction enzymes; protective reaction enzyme is not broken up; ensureing that blood sample fully can react with reaction enzymes, thus improve the accuracy that working electrode detects, is those skilled in the art's critical problems urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of electrochemical test strip; this electrochemical test strip can slow down the sample introduction speed of blood sample, and weaken blood sample to the impulsive force of reaction enzymes, protective reaction enzyme is not broken up; ensure that blood sample fully can react with reaction enzymes, thus improve the accuracy of working electrode detection.
For achieving the above object, the utility model provides following technical scheme:
A kind of electrochemical test strip, comprising:
Base plate, one end of described base plate is sample introduction end;
Be arranged at the carbon electrode on described base plate, described carbon electrode comprises electrode and working electrode;
Be covered in the hydrophilic layer on described carbon electrode, also comprise the barrier layer be arranged on described base plate, described barrier layer relative to described working electrode, and relative to described to electrode near described sample introduction end, be formed with the gap passed through for blood sample between described barrier layer and described hydrophilic layer.
Preferably, the length of described barrier layer is not less than the width of described base plate.
Preferably, the width of described barrier layer is the half of described working electrode width.
Preferably, the thickness of described barrier layer is not less than the thickness of described carbon electrode.
Preferably, described barrier layer is hydrophobic insulated barriers layer.
Preferably, described barrier layer glueds joint on described base plate.
Preferably, described carbon electrode also comprises the blank electrode for detecting undesired signal, described blank electrode relative to described to electrode, and relative to described working electrode near described sample introduction end.
Preferably, described blank electrode relative to described barrier layer near described sample introduction end.
Preferably, also comprise and being interlocked with described base plate, envelope the top cover of described carbon electrode.
As can be seen from technique scheme; blood sample needed to cover barrier layer before entering reaction zone; clearly; the setting of insulating course slow down the sample introduction speed of blood sample; weaken the impulsive force of blood sample to reaction enzymes; protective reaction enzyme is not broken up, and ensures that blood sample fully can react with reaction enzymes, thus improves the accuracy of working electrode detection.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The vertical view of the electrochemical test strip that Fig. 1 provides for an embodiment of the prior art;
The vertical view of the electrochemical test strip that Fig. 2 provides for the utility model one specific embodiment;
The front view of the electrochemical test strip that Fig. 3 provides for the utility model one specific embodiment.
Wherein, 1 be base plate, 11 be sample introduction end, 2 be working electrode, 3 for be blank electrode to electrode, 4,5 be barrier layer, 6 for hydrophilic layer.
Embodiment
The utility model provides a kind of electrochemical test strip; this electrochemical test strip can slow down the sample introduction speed of blood sample, and weaken blood sample to the impulsive force of reaction enzymes, protective reaction enzyme is not broken up; ensure that blood sample fully can react with reaction enzymes, thus improve the accuracy of working electrode detection.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on embodiment of the present utility model, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of the utility model protection.
Please refer to Fig. 2-Fig. 3, the vertical view of the electrochemical test strip that Fig. 2 provides for the utility model one specific embodiment; The front view of the electrochemical test strip that Fig. 3 provides for the utility model one specific embodiment.
In the utility model one specific embodiment, electrochemical test strip comprises base plate 1, carbon electrode, hydrophilic layer 6, especially, also comprises barrier layer 5.
Carbon electrode is arranged on base plate 1, and hydrophilic layer 6 is covered on carbon electrode.One end of base plate 1 is sample introduction end 11, and the region at working electrode 2 place in carbon electrode is reaction zone, and working electrode 2 is attached with reaction enzymes.Barrier layer 5 is also arranged on base plate 1, barrier layer 5 relative to working electrode 2, and relative to electrode 3 near sample introduction end 11.That is, if working electrode 2 surrounds electrode 3 by two to electrode 3 base plate 1 two, as shown in Figure 2, so barrier layer 5 will near sample introduction end 11 to electrode 3 relative near that of sample introduction end 11.If only have one to electrode 3, that no matter this to electrode 3 relative to working electrode 2 near sample introduction end 11 or away from sample introduction end 11, this to electrode 3 and working electrode 2 all relative to barrier layer 5 away from sample introduction end 11.Leave gap between barrier layer 5 and hydrophilic layer 6, this gap is passed through for blood sample.
Blood sample enters examination bar from the sample introduction end 11 of base plate 1, and blood sample, before entering reaction zone, needs to cover barrier layer 5, from the inflow reaction zone, gap that barrier layer 5 and hydrophilic layer 6 are formed.
Clearly, slow down the sample introduction speed of blood sample in above-mentioned every the setting of interlayer 5, weaken the impulsive force of blood sample to reaction enzymes, protective reaction enzyme is not broken up, and has ensured that blood sample fully can react with reaction enzymes, thus improves the accuracy of working electrode 2 detection.
In the utility model one specific embodiment, the length of the barrier layer 5 in above-mentioned is not less than the width of base plate 1, the object of such setting is that preventing part blood sample from walking around barrier layer 5 enters reaction zone, the blood sample walking around barrier layer 5 still has larger impulsive force, so, in order to avoid the generation of this situation, ensure that the width of barrier layer 5 is not less than the width of base plate 1.
In the utility model one specific embodiment, the width of barrier layer 5 is preferably the half of working electrode 2 width.
The thickness of barrier layer 5 is not less than the thickness of carbon electrode, only has the thickness of barrier layer 5 to be equal to or greater than the thickness of carbon electrode, just can play the effect slowing down sample introduction speed.It will be appreciated by persons skilled in the art that barrier layer 5 is thicker, the gap that barrier layer 5 and hydrophilic layer 6 are formed is less, barrier layer 5 pairs of blood samples to slow down dynamics larger, but the gap between barrier layer 5 and hydrophilic layer 6 again can not be too little, and gap is too little can affect work efficiency.Those skilled in the art can decide the optimum thickness of barrier layer according to actual needs.
In the utility model one is specifically implemented, the material of the barrier layer 5 in above-mentioned is hydrophobic isolation material.As being hydrophilic material, then blood sample just can not play the effect of barrier layer when sucking, because hydrophilic acting force can make blood cover rapidly barrier layer 5, and cannot play the effect of obstruct.
In the utility model one specific embodiment, the barrier layer 5 in above-mentioned is adhered on base plate 1 by special glue, glueds joint simple to operate, is connected firmly.
In the utility model one specific embodiment, carbon electrode in above-mentioned also comprises blank electrode 4, blank electrode 4 relative to working electrode 2 and to electrode 3 near sample introduction end 11, after namely blood sample first reacts with the reaction enzymes in blank electrode 4, then flow into reaction zone and working electrode 2 reacts.Blank electrode 4 for detecting the concentration signal of the interference source in blood sample, thus is revised the testing result of working electrode 2, improves the accuracy of working electrode 2 detected value.
Especially, the barrier layer 5 in above-mentioned relative to blank electrode 4 away from sample introduction end 11.Blood sample was subject to the obstruct of barrier layer 5 before entering reaction zone, slowed sample introduction speed, thus can contact fully, for a long time with blank electrode 4.So just can guarantee that blank electrode 4 intactly can detect the undesired signal that in blood sample, interfering material produces, accurately could revise final detection result.In addition, blank electrode 4 is attached with different reaction enzymes respectively from working electrode 2, and barrier layer 5 is between blank electrode 4 and working electrode 2, the reaction enzymes avoided so to a certain extent on two kinds of electrodes floats to the region of the other side, affects respective testing result.
In the utility model one specific embodiment, also comprise the top cover be fastened on base plate 1, top cover is fastened on base plate 1, in being coated on by carbon electrode, plays a protective role to carbon electrode, makes electrochemical test strip be convenient for carrying simultaneously.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. an electrochemical test strip, comprising:
Base plate (1), one end of described base plate (1) is sample introduction end (11);
Be arranged at the carbon electrode on described base plate (1), described carbon electrode comprises electrode (3) and working electrode (2);
Be covered in the hydrophilic layer (6) on described carbon electrode, it is characterized in that, also comprise the barrier layer (5) be arranged on described base plate (1), described barrier layer (5) is relative to described working electrode (2), and relative to described to the close described sample introduction end (11) of electrode (3), between described barrier layer (5) and described hydrophilic layer (6), be formed with the gap passed through for blood sample.
2. electrochemical test strip according to claim 1, is characterized in that, (length of 5 is not less than the described base plate (width of 1 to described barrier layer.
3. electrochemical test strip according to claim 1, is characterized in that, the width of described barrier layer (5) is the half of described working electrode (2) width.
4. electrochemical test strip according to claim 1, is characterized in that, the thickness of described barrier layer (5) is not less than the thickness of described carbon electrode.
5. electrochemical test strip according to claim 1, is characterized in that, described barrier layer (5) is hydrophobic insulated barriers layer.
6. electrochemical test strip according to claim 1, is characterized in that, described barrier layer (5) glueds joint on described base plate (1).
7. electrochemical test strip according to claim 1, it is characterized in that, described carbon electrode also comprises the blank electrode (4) for detecting undesired signal, described blank electrode (4) relative to described to electrode (3), and relative to described working electrode (2) near described sample introduction end (11).
8. electrochemical test strip according to claim 7, is characterized in that, described blank electrode (11) is relative to the close described sample introduction end (11) of described barrier layer (5).
9. electrochemical test strip according to claim 7, is characterized in that, also comprises and being interlocked with described base plate (1), envelope the top cover of described carbon electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736242.2U CN204269594U (en) | 2014-11-27 | 2014-11-27 | A kind of electrochemical test strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736242.2U CN204269594U (en) | 2014-11-27 | 2014-11-27 | A kind of electrochemical test strip |
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| Publication Number | Publication Date |
|---|---|
| CN204269594U true CN204269594U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420736242.2U Expired - Fee Related CN204269594U (en) | 2014-11-27 | 2014-11-27 | A kind of electrochemical test strip |
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| CN (1) | CN204269594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239228A (en) * | 2020-02-24 | 2020-06-05 | 江苏鱼跃医疗设备股份有限公司 | Electrochemical biosensor and method for measuring blood impedance phase angle |
-
2014
- 2014-11-27 CN CN201420736242.2U patent/CN204269594U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239228A (en) * | 2020-02-24 | 2020-06-05 | 江苏鱼跃医疗设备股份有限公司 | Electrochemical biosensor and method for measuring blood impedance phase angle |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20201127 |
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| CF01 | Termination of patent right due to non-payment of annual fee |