CN201237590Y - Block needle detection apparatus - Google Patents
Block needle detection apparatus Download PDFInfo
- Publication number
- CN201237590Y CN201237590Y CNU2008200720267U CN200820072026U CN201237590Y CN 201237590 Y CN201237590 Y CN 201237590Y CN U2008200720267 U CNU2008200720267 U CN U2008200720267U CN 200820072026 U CN200820072026 U CN 200820072026U CN 201237590 Y CN201237590 Y CN 201237590Y
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- needle
- processing unit
- central processing
- emitter follower
- blocking
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Abstract
The utility model relates to a blocking needle detector, which belongs to a component of a fully automatic biochemistry analyzer. A pressure transducer connected with a sample needle high-pressure detergent line is connected with an operational amplifier which is connected with an emitter follower; the emitter follower is connected with an A/D converter which is connected with a central processing unit; the central processing unit is connected respectively with a solenoid valve and an annunciator. The blocking needle detector has the advantages of novel structure, high sensitivity, simple circuit, convenient debugging, and good stability; the detector can not only be employed independently, but also be connected with a system; through a blocking needle detection test on the fully automatic biochemistry analyzer, an aim of real time judgment for blocking of a sample needle can be realized.
Description
Technical field:
The utility model belongs to the stifled needle detecting device of automatic clinical chemistry analyzer.
Background technology
The specimen needle internal diameter of automatic clinical chemistry analyzer has only 0.7 millimeter, often shorter standing time because of the back of taking a blood sample, serum separates not thorough, is stopped up by fibrin when specimen needle is inhaled sample, and causing the inaccurate or application of sample not of application of sample, this occurs the whole distortions of measurement result often.In order to prevent the specimen needle obstruction, common way is after specimen needle adds sample, with High-Pressure Water the specimen needle inwall is cleaned.Even like this, can not avoid specimen needle to stop up fully.Whether this just needs artificial make regular check on specimen needle and stop up, so that specimen needle is carried out attended operation.Can't carry out instant discovery to the obstruction of specimen needle.
Summary of the invention
The utility model provides a kind of stifled needle detecting device, needs the artificial problem of judging stifled pin to solve when Biochemical Analyzer normally uses, and whether stifled pin is with timely prompting user can to detect specimen needle in real time.The technical scheme that the utility model is taked is: the pressure transducer that is connected with specimen needle high-pressure wash pipeline is connected with operational amplifier, this operational amplifier connects emitter follower, this emitter follower connects A/D converter, this A/D converter is connected with central processing unit, and this central processing unit is connected with alarm with solenoid valve respectively.
Working method is: after application of sample finishes, be full of High-Pressure Water in the high-pressure wash pipeline, this moment, solenoid valve was opened, pressure transducer detects the pressure of liquid Lu Zhongshui, the output electric signal of pressure transducer amplifies through operational amplifier, improves driving force through emitter following again, and then electric signal inserts A/D converter, central processing unit reads the numerical value of A/D converter, preserves; After cleaning finished, the water flow pressure in the detergent line can reduce gradually, after time-delay a period of time (fluid pressure unloading time in the pipeline), detect the force value of liquid in the liquid road once more, whether closed electromagnetic valve by former and later two force value are carried out odds ratio, comes the judgement sample pin to stop up then.
The utility model advantage is novel structure, and is highly sensitive, and circuit is simple, debugging is convenient, and good stability can independently use, also can be connected, detect test, can reach the purpose of the obstruction of specimen needle being carried out real-time judge by the stifled pin on automatic clinical chemistry analyzer with system.
Description of drawings
Fig. 1 is the utility model circuit block diagram;
Fig. 2 is the utility model circuit theory diagrams.
Embodiment
As Fig. 1, the pressure transducer that is connected with specimen needle high-pressure wash pipeline is connected with operational amplifier, and this operational amplifier connects emitter follower, and this emitter follower connects A/D converter, this A/D converter is connected with central processing unit, and this central processing unit is connected with alarm with solenoid valve respectively.
As Fig. 2, pressure transducer meets operational amplifier A D623, and the output of AD623 meets emitter follower OP184, and the output of OP184 meets A/D converter AD7888, and central processing unit reads in the force value after the A/D conversion, the Push And Release of central processing unit control electromagnetic valve.
Claims (1)
1, a kind of stifled needle detecting device, it is characterized in that: the pressure transducer that is connected with specimen needle high-pressure wash pipeline is connected with operational amplifier, this operational amplifier connects emitter follower, this emitter follower connects A/D converter, this A/D converter is connected with central processing unit, and this central processing unit is connected with alarm with solenoid valve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200720267U CN201237590Y (en) | 2008-06-20 | 2008-06-20 | Block needle detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200720267U CN201237590Y (en) | 2008-06-20 | 2008-06-20 | Block needle detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201237590Y true CN201237590Y (en) | 2009-05-13 |
Family
ID=40650323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200720267U Expired - Lifetime CN201237590Y (en) | 2008-06-20 | 2008-06-20 | Block needle detection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201237590Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279256A (en) * | 2010-06-12 | 2011-12-14 | 北京众合百克科学仪器技术有限公司 | Cleaning head with hole-plugging alarm |
| WO2019014942A1 (en) * | 2017-07-21 | 2019-01-24 | 深圳迈瑞生物医疗电子股份有限公司 | Sample analyzer and sample monitoring method |
| CN110542373A (en) * | 2019-09-25 | 2019-12-06 | 苏州长光华医生物医学工程有限公司 | Utilize foil gage deflection to detect device of wasing stifled needle of separation waste liquid needle |
| CN111024972A (en) * | 2019-12-11 | 2020-04-17 | 桂林优利特医疗电子有限公司 | Method and device for detecting sample suction state of sample adding needle in real time |
| CN114166830A (en) * | 2021-12-08 | 2022-03-11 | 苏州长光华医生物医学工程有限公司 | Sampling needle pipeline and sampling judgment method |
-
2008
- 2008-06-20 CN CNU2008200720267U patent/CN201237590Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279256A (en) * | 2010-06-12 | 2011-12-14 | 北京众合百克科学仪器技术有限公司 | Cleaning head with hole-plugging alarm |
| WO2019014942A1 (en) * | 2017-07-21 | 2019-01-24 | 深圳迈瑞生物医疗电子股份有限公司 | Sample analyzer and sample monitoring method |
| CN110542373A (en) * | 2019-09-25 | 2019-12-06 | 苏州长光华医生物医学工程有限公司 | Utilize foil gage deflection to detect device of wasing stifled needle of separation waste liquid needle |
| WO2021056629A1 (en) * | 2019-09-25 | 2021-04-01 | 苏州长光华医生物医学工程有限公司 | Device for detecting blockage of cleaning and separating waste liquid needle by using amount of deformation of strain gauge |
| CN111024972A (en) * | 2019-12-11 | 2020-04-17 | 桂林优利特医疗电子有限公司 | Method and device for detecting sample suction state of sample adding needle in real time |
| CN114166830A (en) * | 2021-12-08 | 2022-03-11 | 苏州长光华医生物医学工程有限公司 | Sampling needle pipeline and sampling judgment method |
| CN114166830B (en) * | 2021-12-08 | 2023-07-14 | 苏州长光华医生物医学工程有限公司 | Sampling needle pipeline and sampling judgment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGCHUN DIRUI MEDICAL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: DIRUI INDUSTRY CO., LTD., CHANGCHUN |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 130012, 95 Yunhe street, Jilin, Changchun Patentee after: Changchun Dirui Medical Technology Co., Ltd. Address before: 130012, 95 Yunhe street, Jilin, Changchun Patentee before: Dirui Industry Co., Ltd., Changchun |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 130012, 95 Yunhe street, Jilin, Changchun Patentee after: Medical Polytron Technologies Inc Address before: 130012, 95 Yunhe street, Jilin, Changchun Patentee before: Changchun Dirui Medical Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090513 |