CN201269876Y - Volume metering apparatus - Google Patents
Volume metering apparatus Download PDFInfo
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- CN201269876Y CN201269876Y CNU2008202129835U CN200820212983U CN201269876Y CN 201269876 Y CN201269876 Y CN 201269876Y CN U2008202129835 U CNU2008202129835 U CN U2008202129835U CN 200820212983 U CN200820212983 U CN 200820212983U CN 201269876 Y CN201269876 Y CN 201269876Y
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Abstract
The utility model is applicable to the technical field of cell analysis, and discloses a volume measurement device that comprises two counting chambers, a volume measurement tube, a vacuum chamber and two control valves. Each counting chamber is provided with a front chamber and a rear chamber which are communicated by a hole; wherein, the rear chamber of a first counting chamber is communicated with the rear chamber of a second counting chamber, the rear chamber of the second counting chamber is connected and communicated with one end of the volume measurement tube, while the other end of the volume measurement tube is connected and communicated with the vacuum chamber; a first control valve is arranged between the rear chamber of the second counting chamber and the volume measurement tube, and a second control valve is positioned between the volume measurement tube and the vacuum chamber. One volume measurement tube is adopted to realize the simultaneous detection of the number of hematid and leucocyte in unit volume so as to save a set of the volume measurement tubes and corresponding measuring acquisition and processing units, thereby reducing the cost of the volume measurement device. Simultaneously, the simultaneous detection of the hematid and the leucocyte can also improve the detection efficiency.
Description
Technical field
The utility model relates to the cell analysis technical field, particularly a kind of volume metering mechanism that is used for the blood cell analysis.
Background technology
Blood cell analyzer is to be used for equipment that blood of human body leucocyte, red blood cell, blood platelet, haemoglobin etc. are detected, is one of infrastructure device of hospital clinical check.
The size of various types of cells is within the specific limits in normal human's blood, can classify according to the volume size of cell, present three classification blood cell analyzers all adopt " orifice method " (also claiming " electrical impedance method " or " Ku Ertefa ") to detect the quantity of cell, adopt volumescope buret measurement volumes, thereby determine leucocyte and erythrocytic quantity in the unit volume.
Existing volume metering mechanism comprises two counting chambers, two volume gauge lines and a vacuum tube, and wherein, two counting chambers are placed white blood cell count(WBC) liquid and red blood cell count(RBC) liquid respectively, and each counting chamber all is provided with forebay and after-bay.The after-bay of each counting chamber is communicated with the other end of this volumescope buret and vacuum chamber by an operation valve with an end of a volume gauge line.Also be provided with another operation valve between the after-bay of each counting chamber and each volumescope buret, this operation valve is used for the CONTROL VOLUME gauge line and is communicated with extraneous air or turn-offs.Be respectively equipped with a sensor in the upper and lower of each volumescope buret.Under the effect of vacuum chamber negative pressure, leukocytic counting liquid and erythrocytic counting liquid enter respectively in the volume gauge line, by existing control circuit control and treatment, can determine interior leucocyte and the erythrocytic quantity of volume that the volumescope buret is measured.When arriving superposed sensor, the liquid level of leukocytic counting liquid or erythrocytic counting liquid begins to add up leucocyte or erythrocytic quantity, liquid level up to counting liquid arrives the sensor counting end counting that is positioned at the bottom, thereby can determine leucocyte and erythrocytic number; The volume of volumescope buret is exactly the volume of leukocytic counting liquid or erythrocytic counting liquid between two sensors.Because the volume between the two sensors determines that leucocyte or erythrocyte number in this volume are determined, therefore can determine leucocyte and erythrocytic quantity in the unit volume.Though this device can detect red blood cell in the testing sample and leukocytic quantity, but need this device to adopt two volume gauge lines to detect leucocyte and erythrocytic quantity in the unit volume respectively, therefore the cost of this device is higher, and also more complicated of structure.While is owing to the leucocyte and the erythrocytic quantity that detect respectively in the unit volume, so the efficient of its detection is not high yet.
Therefore need be a kind of simple in structure, lower-cost volume metering mechanism can improve red blood cell and leukocytic detection efficiency simultaneously.
The utility model content
The technical matters that the utility model mainly solves provides a kind of simple in structure, and the volume metering mechanism that can reduce cost improves detection efficiency simultaneously.
In order to address the above problem, the utility model provides a kind of volume metering mechanism to comprise: described volume metering mechanism comprises, two counting chambers, a volume gauge line, a vacuum chamber and two operation valves, each counting chamber all is provided with forebay and after-bay, is communicated with by the hole between described forebay and the after-bay; Wherein, the after-bay of first counting chamber is communicated with the after-bay of second counting chamber, and the after-bay of described second counting chamber is connected conducting with an end of volumescope buret, and the other end of this volumescope buret is connected conducting with vacuum chamber; Described first operation valve is located between the after-bay and volumescope buret of second counting chamber, and described second operation valve is located between volumescope buret and the vacuum chamber.
Preferably, the after-bay of the after-bay of described first counting chamber and second counting chamber, the after-bay of second counting chamber and volumescope buret, and be connected conducting by conduit between volumescope buret and the vacuum chamber.
Preferably, described first counting chamber is placed and is comprised leukocytic counting liquid, and second counting chamber is placed and comprised erythrocytic counting liquid.
Preferably, the aperture in the hole of described first counting chamber is about 100 μ m, and the aperture in the hole of second counting chamber is about 70 μ m.
Preferably, when described conduit was communicated with the after-bay of second counting chamber, the hole of this conduit and second counting chamber was angled.
Preferably, the angle value of described angle is greater than 0 degree, smaller or equal to 90 degree.
Preferably, described volumescope buret vertically is provided with.
The utility model volume metering mechanism, the after-bay of first counting chamber is communicated with the after-bay of second counting chamber, after-bay with second counting chamber is communicated with an end of volumescope buret again, the other end of described volumescope buret and vacuum chamber, can adopt a volume gauge line to realize detecting simultaneously red blood cell and leucocyte unit volume quantity, thereby reduce a cover volume gauge line and corresponding metering acquisition process unit, reach the cost that reduces volume metering mechanism, also because red blood cell and leucocyte can detect simultaneously, therefore also can improve detection efficiency simultaneously.
Description of drawings
Fig. 1 is the utility model volume metering mechanism structural representation;
Fig. 2 is the backflow synoptic diagram that the utility model volume metering mechanism produces;
Fig. 3 is the flow diagram of sweeping of the utility model volume metering mechanism.
Description of reference numerals:
After-bay 12; Hole 13; Forebay 21; After-bay 22; Hole 23;
The realization of the utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
The utility model volume metering mechanism, the after-bay of first counting chamber is communicated with the after-bay of second counting chamber, after-bay with second counting chamber is communicated with an end of volumescope buret again, the other end of described volumescope buret and vacuum chamber, can adopt a volume gauge line to realize detecting simultaneously red blood cell and leucocyte unit volume quantity, thereby reduce by a cover volume gauge line, reach the cost that reduces volume metering mechanism, also because red blood cell and leucocyte can detect simultaneously, therefore also can improve detection efficiency simultaneously.
As shown in Figure 1, the utility model volume metering mechanism proposes an embodiment.Described volume metering mechanism comprises: two counting chambers, a volume gauge line 3, a vacuum chamber 4 and two operation valves, and wherein, described two counting chambers are respectively first counting chamber 1 and second counting chamber 2; Two operation valves are respectively first operation valve 5 and second operation valve 6.Described first counting chamber 1 is used to deposit and comprises leukocytic counting liquid, this first counting chamber 1 is provided with forebay 11 and after-bay 12, be communicated with by hole 13 between this forebay 11 and the after-bay 12, wherein, described forebay 11 is also referred to as the forebay of first counting chamber, after-bay 12 is also referred to as the after-bay of first counting chamber, and hole 13 is also referred to as the hole of first counting chamber.Described second counting chamber 2 is used to deposit and comprises erythrocytic counting liquid, this second counting chamber 2 also is provided with forebay 21 and after-bay 22, this forebay 21 is communicated with after-bay 22 by hole 23, wherein, forebay 21 is also referred to as the forebay of second counting chamber, after-bay 22 is also referred to as the after-bay of second counting chamber, and hole 23 is also referred to as the hole of second counting chamber.Be communicated with by conduit 9 between described first counting chamber 1 and second counting chamber 2, an end of this conduit 9 is communicated with the after-bay 12 of described first counting chamber, and the other end of conduit 9 is communicated with the after-bay 22 of second counting chamber; The after-bay 22 of described second counting chamber is communicated with an end of volumescope buret 3, the other end of this volumescope buret 3 is communicated with vacuum chamber 4 by second operation valve 6, on the after-bay 22 of second counting chamber and the conduit 9 between the volumescope buret 3, be provided with first operation valve 5, on the conduit 9 between described volumescope buret 3 and the vacuum chamber 4, be provided with second operation valve 6.Described second operation valve 6 is used to transmit the negative pressure that is produced by vacuum chamber 4.
Specifically, the conduit 9 between the volumescope buret 3 and second counting chamber 2 is provided with first operation valve 5, and this first operation valve 5 is used for CONTROL VOLUME gauge line 3 and external communications.Be respectively equipped with the first sensor 7 and second sensor 8 in the upper and lower of described volumescope buret 3; Adopt existing " orifice method " that leucocyte and red blood cell are counted,, and be respectively equipped with positive and negative electrode in the forebay 21 of second counting chamber and the after-bay 22 in the forebay 11 and the after-bay 12 of first counting chamber; The described first sensor 7 and second sensor 8 are accepted the control circuit control on the blood cell analyzer respectively, simultaneously during by hole 13 and hole 23, change in voltage is respectively to red blood cell and white blood cell count(WBC) between the positive and negative electrode according to red blood cell and leucocyte for control circuit.When the liquid level of counting liquid in first counting chamber 1 and second counting chamber 2 arrives first sensor 7, begin red blood cell and leucocyte are counted; When the liquid level of counting liquid arrives second sensor 8, stop red blood cell and white blood cell count(WBC), because the volume between the first sensor 7 and second sensor 8 is determined, and the leukocytic concentration in first counting chamber 1 is uniform, erythrocytic concentration in second counting chamber 2 also is uniformly, therefore can determine the red blood cell and the leukocytic quantity of unit volume.
In the present embodiment, preferably, when described conduit 9 is communicated with the after-bay 22 of second counting chamber, the hole 23 of this conduit 9 and second counting chamber is angled, promptly when the counting liquid in first counting chamber 1 when flowing into the after-bay 22 of second counting chamber, the direction shape that counting liquid in the direction of the inflow of the counting liquid in first counting chamber 1 and the forebay 21 of second counting chamber enters the after-bay 22 of second counting chamber has a certain degree, and the angle value of this angle is greater than 0 degree, smaller or equal to 90 degree.The described first sensor 7 and the second sensing receiver 8 can be photoelectric sensors.The aperture in the hole 13 of first counting chamber is about 100 μ m, about the aperture 70 μ m in the hole 23 of second counting chamber.Because the aperture in hole 13 is about 100 μ m, the aperture in hole 23 is about 70 μ m, and therefore in identical following time of suction function, the flow of the counting liquid in first counting chamber 1 is about 2～3 times of the flows of the counting liquid in second counting chamber 2.
Structure for better explanation the utility model volume metering mechanism specifies the described volume metering mechanism course of work:
In first counting chamber 1 and second counting chamber 2, place counting liquid respectively, wherein, comprise leucocyte in the counting liquid in first counting chamber 1, comprise red blood cell, blood platelet in the counting liquid in second counting chamber 2.
When using this described volume metering mechanism, open first operation valve 5 and second operation valve 6, the liquid in the excluded volume gauge line at every turn; Close first operation valve 5 and second operation valve 6 then respectively, set up the vacuum that counting needs again, for counting is prepared.During the counting beginning, open first operation valve 5 earlier, because vacuum chamber 4 is a vacuum state, so the negative pressure of these vacuum chamber 4 generations is delivered to the after-bay 22 of second counting chamber; Simultaneously since the forebay 21 of second counting chamber is communicated with after-bay 22 by hole 23, thereby make counting liquid in the forebay 21 of second counting chamber can pass through the hole 23 inflow after-bays 22 of second counting chamber; The negative pressure that vacuum chamber 4 produces also is delivered to counting liquid in after-bay 12, the first counting chambers 1 of first counting chamber flows to second counting chamber by conduit 9 after-bay 22.Because the effect of negative pressure, make the counting liquid in the forebay 11 of the counting chamber of winning constantly flow to after-bay 12 by the hole 13 of first counting chamber; Counting liquid in the forebay 21 of second counting chamber also constantly flows into after-bay 22 by the hole 23 of second counting chamber simultaneously.When the liquid level of this counting liquid arrives first sensor 7, begin red blood cell and leucocyte are counted; When the liquid level of counting liquid arrives second sensor 8, stop red blood cell and white blood cell count(WBC), because the volume between the first sensor 7 and second sensor 8 is determined, and the concentration of the counting liquid in first counting chamber 1 is uniform, the concentration of the counting liquid in second counting chamber 2 also is uniformly, therefore can determine the red blood cell and the leukocytic quantity of unit volume.
When reusing described body knowledge measuring apparatus detection red blood cell and quantity of leucocyte, residual counting liquid before occupying on the described volumescope buret 3, therefore need open first operation valve 5 earlier allows described volumescope buret 3 be communicated with extraneous air, open second operation valve 6 again, remove residual counting liquid by the negative pressure that vacuum chamber 4 produces, know metering for body and get ready.
As shown in Figures 2 and 3, because the aperture in the hole 13 of first counting chamber and the hole 23 of second counting chamber is all very little, comprise leukocytic counting liquid and comprise the flow velocity that erythrocytic counting liquid flows through all very high, and the hole 23 of the hole 12 of relative first counting chamber of caliber of the conduit 9 that is communicated with the after-bay 22 of second counting chamber and second counting chamber is all bigger, therefore the flow velocity of counting liquid is slower in the conduit 9, under suction function, after the counting liquid in second counting chamber 2 enters after-bay 22 at a high speed, be easy to generate backflow; Negative pressure is to the counting liquid generation effect of first counting chamber 1 simultaneously, make the counting liquid in the counting chamber 1 of winning flow to second counting chamber 2, owing to be communicated with by conduit 9 between the after-bay 12 of first counting chamber and the after-bay 22 of second counting chamber, and when this conduit 9 is communicated with the after-bay 22 of second counting chamber, the hole 23 of the conduit 9 and second counting chamber angled, this angle value is greater than 0 degree, smaller or equal to 90 degree; When the counting liquid in first counting chamber 1 flows to the after-bay 2 of second counting chamber, counting liquid in first counting chamber 1 flow into direction that counting liquid in the forebay 21 of the direction of after-bay 22 and second counting chamber enters after-bay 22 also shape have a certain degree, therefore can sweep stream to the counting liquid in the after-bay 22 of second counting chamber, thereby can reduce 21 backflows that form when going into after-bay 22 of counting liquid in second counting chamber 2 from the forebay.
The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (7)
1. volume metering mechanism, it is characterized in that: described volume metering mechanism comprises, two counting chambers, a volume gauge line, a vacuum chamber and two operation valves, each counting chamber all is provided with forebay and after-bay, is communicated with by the hole between described forebay and the after-bay; Wherein, the after-bay of first counting chamber is communicated with the after-bay of second counting chamber, and the after-bay of described second counting chamber is connected conducting with an end of volumescope buret, and the other end of this volumescope buret is connected conducting with vacuum chamber; Described first operation valve is located between the after-bay and volumescope buret of second counting chamber, and described second operation valve is located between volumescope buret and the vacuum chamber.
2. volume metering mechanism according to claim 1, it is characterized in that: the after-bay of the after-bay of described first counting chamber and second counting chamber, the after-bay of second counting chamber and volumescope buret, and be connected conducting by conduit between volumescope buret and the vacuum chamber.
3. volume metering mechanism according to claim 1 and 2 is characterized in that: the aperture in the hole of described first counting chamber is about 100 μ m, and the aperture in the hole of second counting chamber is about 70 μ m.
4. volume metering mechanism according to claim 3 is characterized in that: described first counting chamber is placed and is comprised leukocytic counting liquid, and second counting chamber is placed and comprised erythrocytic counting liquid.
5. volume metering mechanism according to claim 1 and 2 is characterized in that: when described conduit was communicated with the after-bay of second counting chamber, the hole of this conduit and second counting chamber was angled.
6. volume metering mechanism according to claim 5 is characterized in that: the angle value of described angle is greater than 0 degree, smaller or equal to 90 degree.
7. volume metering mechanism according to claim 1 and 2 is characterized in that: described volumescope buret vertically is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202129835U CN201269876Y (en) | 2008-10-13 | 2008-10-13 | Volume metering apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202129835U CN201269876Y (en) | 2008-10-13 | 2008-10-13 | Volume metering apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201269876Y true CN201269876Y (en) | 2009-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202129835U Expired - Fee Related CN201269876Y (en) | 2008-10-13 | 2008-10-13 | Volume metering apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN201269876Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213607A (en) * | 2011-04-12 | 2011-10-12 | 深圳市蓝韵实业有限公司 | Liquid volume metering device |
-
2008
- 2008-10-13 CN CNU2008202129835U patent/CN201269876Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213607A (en) * | 2011-04-12 | 2011-10-12 | 深圳市蓝韵实业有限公司 | Liquid volume metering device |
| CN102213607B (en) * | 2011-04-12 | 2013-07-10 | 深圳市蓝韵实业有限公司 | Liquid volume metering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20171013 |