CN2611891Y - Optical circuit structure for blood coagulation analyzer - Google Patents
Optical circuit structure for blood coagulation analyzer Download PDFInfo
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- CN2611891Y CN2611891Y CN 03230497 CN03230497U CN2611891Y CN 2611891 Y CN2611891 Y CN 2611891Y CN 03230497 CN03230497 CN 03230497 CN 03230497 U CN03230497 U CN 03230497U CN 2611891 Y CN2611891 Y CN 2611891Y
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- light source
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Abstract
An optical path structure for the blood coagulation analyzer mainly comprises a light source 6, a photoelectric sensing device 15, a heating member which is provided with a test tube rack, wherein the light source 6 is a monochromatic laser light source which is vertical to the photoelectric sensing device 15, an interference filter 8 capable of only permitting the passing of laser source light ray and stopping other wave length is provided in front of the photoelectric sensing device 15. The utility model has the advantages that the testing sensitivity increases by the testing of the diffusion light, and adds the filter filtering the light ray projected the photoelectric sensing device because of the adoption of monochromatic light source, thereby overcoming that the interference of other coloring matter in blood plasma and stray light has influence on the testing result.
Description
Affiliated technical field
The utility model relates to a kind of Medical Instruments, refers to a kind of coaglation analyzer of testing blood clotting speed especially, specifically refers to the improvement to the light path of coaglation analyzer.
Background technology
Coaglation analyzer is a kind of instrument of measuring the clotting time by the variation of measuring the blood turbidity, and the diagnosis and treatment that can be the hemostasis disease provide necessary clinical data.In the prior art, adopt the coaglation analyzer of photoelectric turbidimetry to generally comprise light source, photoelectric sensor, and relevant circuit and display device etc., its light channel structure generally is that light source, blood sample test tube, photoelectric sensor are arranged in straight line, wherein light source generally all adopts incandescent lamp or luminotron, and the transmitance of light changes when measuring that turbidity changes in the blood clotting process, measures the clotting time.Further studies show that, the instrument of this structure has the following disadvantages, after reagent and blood plasma mix when at first measuring, fibrinogen in the blood plasma is solidificating fiber albumen gradually, its process of setting is that blood plasma reels off raw silk from cocoons and forms fibrinous process, be not in the test tube whole turbidity change simultaneously, therefore the variation of its transmitted intensity is not as good as the variation sensitivity of scattered light intensity, less to sensitivity in the exigent test at some blood samples, as fibrinogen test and missing factor test, its result difference is bigger; Next is that the blood sample as jaundice patient, high fat of blood patient also can influence measurement result when blood plasma was subjected to the pigment interference; All there be the interference problem of extraneous light (as light, sunlight etc.) to measurement result in all with quasi-instrument simultaneously.
Summary of the invention
The purpose of this utility model is to propose to be used for a kind of new light channel structure of coaglation analyzer, to improve the measuring accuracy of existing instrument.
Another purpose of the present utility model is to propose to be used for a kind of new light channel structure of coaglation analyzer, is subjected to the interference of blood sample pigment and the extraneous veiling glare line that looses easily with the test result that overcomes instrument.
The utility model is design like this.Because it is higher to measure the scattered light precision, will change the mensuration to scattered light to the mensuration of transmitted light into.But data show, for same light source order of magnitude a little less than scattered light that blood sample produces is than transmitted light, no matter the luminotron light source is in the brightness or all be difficult to satisfy the requirement of instrument on stability, therefore must look for light source in addition.Because LASER Light Source has a constant wavelength, the brightness height, good stability, and control easily are a kind of very good light sources, are that the red laser pipe of 650nm is made light source so select wavelength for use in light channel structure of the present utility model; Owing to adopt monochromatic source, also for adopting optical filter to create condition, interference filter has selective power to the wavelength by light, so just can stop other pigment and other diffusing veiling glare line to disturb.Its principle is seen Fig. 1, LASER Light Source 6 by a slit light hurdle 4 project tested test tube 3 ' on, the scattered light that is reflected by the blood protein fiber through test tube 3 ' sidewall project the light path A that is set to 90 degrees with light source, this light at first focuses on through lens 10, have optionally to project on the photoelectric sensor 15 behind the interference filter 8 through one again and convert electric signal to, through amplification, analog to digital conversion and data processing, just can obtain measurement result again.
Specifically, the light channel structure of coaglation analyzer of the present utility model, comprise that mainly a light source 6, a photoelectric sensor 15, are provided with the calandria 2 of test tube flat 3, described light source 6 adopts the one-wavelength laser light source, the light path of the light path of photoelectric sensor 15 and light source 6 is set to 90 degrees, and is provided with the interference filter 8 that can stop other wavelength, only allow lasing light emitter light to pass through before photoelectric sensor 15.
The utility model has the advantages that by mensuration scattered light, improved measurement sensitivity, simultaneously because of adopting monochromatic source, and increased optical filter the light that projects on the photoelectric sensor is filtered, overcome the influence of the interference of other pigment in the blood plasma and diffusing veiling glare line effectively to measurement result.
Description of drawings
Fig. 1 is the light channel structure schematic diagram of coaglation analyzer of the present utility model;
Fig. 2 is the vertical view of the structure of an embodiment of the present utility model;
Fig. 3 is the AA cut-open view of Fig. 2.
Among the figure: 1 sucking, 2 calandrias, 3 test tube flats and tested test tube, 4 slit light hurdles, 5 laser bases, 6 LASER Light Source, 7 silicon photocell seats, 8 interference filters, 9 photoelectric cells lid, 10 lens, 11 stirring motors, 12 stir magnet, 13 motor cabinets, 14 iron shots, 15 silicon photocells.
Embodiment
Now the utility model is described in further detail in conjunction with an embodiment and accompanying drawing thereof.
See Fig. 2, Fig. 3, tested test tube 3 ' the place test tube flat 3 on the calandria 2, the effect of calandria 2 are to keep the blood sample temperature identical with body temperature.On described calandria 2, a side of test tube flat 3 is provided with the laser base 5 on a band slit light hurdle 4, places this laser base 5 as the laser tube 6 of light source; It is that 5mW, wavelength are the red laser pipe of 650nm that laser tube adopts power; At the side of test tube flat 3, be provided with a silicon photocell seat 7 with this place, 5 one-tenth 90 ° of orientation of laser base, the front end of this battery tray 7 is provided with one group of lens 10, and the rear end of battery tray 7 is provided with interference filter 8 and silicon photocell 15 successively; The offside of laser base 5 has the deep hole 1 of a degree of depth much larger than diameter on the calandria 2.
Fig. 3 is the A-A cut-open view of Fig. 2, among the figure, below the test tube flat on the calandria 23, be provided with a stirring motor 11, be provided with one at this motor shaft end and stir magnet 12, at test tube 3 ' mid-iron shot 14, when motor 11 rotation, magnet 12 drive test tubes 3 ' in iron shot 14 in blood sample, roll, play beating action.
The effect of interference filter 8 is other stray lights beyond the filtering LASER Light Source, and the wavelength that allows LASER Light Source send selectively is that the ruddiness of 650nm passes through, thereby the pigment of having eliminated blood plasma disturbs and the influence of veiling glare line to measurement result of loosing.
Because little blood sample consumption is an important technology index of this instrument, reduce the blood plasma consumption and not only can reduce blood sampling volume, also can reduce expensive reagent dosage, reduce testing cost.Be minimizing blood sample consumption, adopt slit light hurdle structure in the present embodiment, this slit light hurdle 4 is provided in a side of a flat hole over against test tube 3 ' liquid level below and stirring one narrow and small zone, iron shot 14 tops before the light source, Kong Kuanyue 5mm, high about 0.6mm.Its effect be guarantee when using less blood sample LASER Light Source still shine in below the liquid level and be positioned at the test tube bottom iron shot 14 above narrow and small zone, thereby avoid the influence of sample liquid level and 14 pairs of test results of iron shot.
Be located at the about 5mm of deep hole diameter of the right opposite of LASER Light Source 6, about deeply 25mm, because its degree of depth is much larger than its diameter, therefore its effect is equivalent to a black matrix, the light that enters this deep hole will all be absorbed, the transmitted light that passes test tube like this will be absorbed fully, thereby has eliminated the influence to test result of the transmitted light that passes test tube.
Claims (9)
1. light channel structure that is used for coaglation analyzer, comprise that mainly a light source (6), a photoelectric sensor (15), are provided with the calandria (2) of test tube flat (3), it is characterized in that the described light source (6) and the light path of photoelectric sensor (15) are set to 90 degrees, described light source (6) adopts monochromatic LASER Light Source, at photoelectric sensor (15) but the preceding interference filter (8) that is provided with other stray light beyond the elimination LASER Light Source.
2. light channel structure according to claim 1 is characterized in that going up at described calandria (2), a side of test tube flat (3) is provided with the laser base (5) on a band slit light hurdle (4), places this laser base (5) as the laser tube (6) of light source.
3. light channel structure according to claim 2 is characterized in that described slit light hurdle (4) is the flat hole in a narrow and small zone below the liquid level of test tube (3 ') and above the iron shot (14).
4. light channel structure according to claim 1 is characterized in that described LASER Light Source is that wavelength is the red laser pipe of 650nm, and described interference filter (8) is the optical filter that allows 650nm to pass through with ruddiness.
5. according to claim 1,2 or 4 described light channel structures, it is characterized in that in described test tube flat (3) side, become place, 90 ° of orientation to be provided with a silicon photocell seat (7) with laser base (5), the front end of this battery tray (7) is provided with one group of lens (10), and interference filter (8) and silicon photocell (15) are located at the rear end of this battery tray (7) successively.
6. according to claim 1,2 or 4 described light channel structures, it is characterized in that described calandria (2) is gone up, the offside of laser base (5) has the deep hole (1) of a degree of depth much larger than diameter.
7. light channel structure according to claim 5 is characterized in that described calandria (2) is gone up, the offside of laser base (5) has the deep hole (1) of a degree of depth much larger than diameter.
8. according to claim 1,2 or 4 described light channel structures, it is characterized in that being provided with a stirring motor (11) in the below of described test tube flat (3), be provided with a magnet (12) at this motor shaft end place, can when motor (11) rotates, drive its iron shot that plays beating action (14) at test tube (3 ') mid-.
9. light channel structure according to claim 7, it is characterized in that being provided with a stirring motor (11) in the below of described test tube flat (3), be provided with a magnet (12) at this motor shaft end place, can when motor (11) rotates, drive its iron shot that plays beating action (14) at test tube (3 ') mid-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03230497 CN2611891Y (en) | 2003-04-21 | 2003-04-21 | Optical circuit structure for blood coagulation analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03230497 CN2611891Y (en) | 2003-04-21 | 2003-04-21 | Optical circuit structure for blood coagulation analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2611891Y true CN2611891Y (en) | 2004-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03230497 Expired - Fee Related CN2611891Y (en) | 2003-04-21 | 2003-04-21 | Optical circuit structure for blood coagulation analyzer |
Country Status (1)
| Country | Link |
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| CN (1) | CN2611891Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949841A (en) * | 2010-09-27 | 2011-01-19 | 西南大学 | Blood coagulation index detecting system based on LabVIEW platform |
| CN101126761B (en) * | 2006-08-18 | 2012-07-18 | 希森美康株式会社 | Blood coagulation analyzer and blood coagulation analyzing method |
| CN108036990A (en) * | 2017-12-18 | 2018-05-15 | 上海澜澈生物科技有限公司 | A kind of full-automatic smearing machine |
-
2003
- 2003-04-21 CN CN 03230497 patent/CN2611891Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101126761B (en) * | 2006-08-18 | 2012-07-18 | 希森美康株式会社 | Blood coagulation analyzer and blood coagulation analyzing method |
| CN101949841A (en) * | 2010-09-27 | 2011-01-19 | 西南大学 | Blood coagulation index detecting system based on LabVIEW platform |
| CN108036990A (en) * | 2017-12-18 | 2018-05-15 | 上海澜澈生物科技有限公司 | A kind of full-automatic smearing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |