CN2862041Y - Single needle sampling apparatus for full-automatic biochemistry analyzer - Google Patents
Single needle sampling apparatus for full-automatic biochemistry analyzer Download PDFInfo
- Publication number
- CN2862041Y CN2862041Y CN 200520120545 CN200520120545U CN2862041Y CN 2862041 Y CN2862041 Y CN 2862041Y CN 200520120545 CN200520120545 CN 200520120545 CN 200520120545 U CN200520120545 U CN 200520120545U CN 2862041 Y CN2862041 Y CN 2862041Y
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- syringe
- ball screw
- pedestal
- slide block
- guide rod
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Abstract
The utility model relates to a single-needle injection apparatus for full automatic biochemical analyzer, which includes a syringe drive module (100), a set of injection needles (200), and a set of solenoid valves (300). The syringe drive module (100) includes base (110), stepper motor (120), a 500 mul syringe (130), sliding block (150), ball screw assembly and guide rod (170), injector support (180) and driver (190). The ball screw assembly includes ball screw (160) and feed screw nut (168). The stepper motor (120) drives ball screw (160) to rotate, and the feed screw nut (168) drives the sliding block (150) to move in a straight line along the guide rod (170), thereby the driver (190) drives the syringe piston rod (131) to move in a straight line in the syringe. The 3-45 muL sample injection and 45-500 muL sample injection are achieved via a syringe drive module that drives a 500 muL syringe, in combination with a set of injection needles and a set of solenoid valves (300), so as to remarkably reduce the manufacturing and maintenance cost of biochemical analyzer.
Description
Technical field the utility model relates to the medical treatment detection device that is used for biochemical analysis, particularly relates to the sample adding device that is used for automatic clinical chemistry analyzer.
The sample adding device of background technology automatic clinical chemistry analyzer comprises injector drive module, sampling needle and solenoid valve.Sample adding device for automatic clinical chemistry analyzer, the minimum application of sample amount of sample is an important indicator of instrument, trueness error and repeated requirement when satisfying the minimum application of sample amount of sample, minimum application of sample incremental change and minimum application of sample amount, the prior art automatic clinical chemistry analyzer generally all adopts two cover sample adding devices: promptly with the syringe of cover injector drive module drive one 50 a μ l, cooperate a sampling needle and to overlap solenoid valve and finish application of sample requirement to sample application amount 3-45 μ l; With the syringe of one 500 μ l of another set of injector drive module drive, cooperate another root sampling needle and another set of solenoid valve to finish application of sample requirement to reagent application of sample amount 45-450 μ l.Need two cover injector drive module and solenoid valve and sampling needles like this, cause the making and the maintenance cost height of Biochemical Analyzer.
Utility model content the technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and proposes a kind of single needle sample adding device that is used for automatic clinical chemistry analyzer, promptly with the syringe of cover injector drive module drive one 500 a μ l, cooperate a sampling needle and a cover solenoid valve to finish application of sample requirement to sample application amount 3-45 μ l and reagent application of sample amount 45-450 μ l, greatly reduce the manufacturing and the maintenance cost of Biochemical Analyzer.
The utility model solve the technical problem can be by realizing by the following technical solutions:
Design, a kind of single needle sample adding device that is used for automatic clinical chemistry analyzer of use comprise injector drive module, sampling needle and solenoid valve, and described injector drive module, sampling needle and solenoid valve all have only a cover; Described injector drive module comprises: syringe, slide block, ball wire bar pair and the guide rod of pedestal, stepper motor, 500 μ l specifications, and syringe support; Described ball wire bar pair comprises ball screw and feed screw nut; Described pedestal comprises front panel and perpendicular to wallboard around this front panel, described stepper motor is fixed on the described pedestal; After described ball wire bar pair and guide rod pass through the through hole that is opened in the described slide block, described guide rod two ends are fixed on the wallboard of described pedestal two ends, described ball screw is supported by bearing in wallboard place, described pedestal two ends, guarantees that described ball screw can rotate and axially can not move; Described ball screw one end is linked with synchronizing wheel after also passing through the wallboard of described pedestal one end, and this synchronizing wheel is connected with the motor synchronous belt wheel by synchronous band; Described injector drive module also comprises the driving device that is fixed on the described slide block, and this driving device is connected and fixed with syringe piston rod after passing the bar shaped notch that is opened on the described pedestal front panel again; Described syringe needle tube is fixed in the syringe support; Described feed screw nut has the end face flange and is connected with described slide block by this end face flange, and the interior through hole of slide block that described feed screw nut's outside surface is corresponding with it leaves radial play; The ratio of gear of described synchronizing wheel and motor synchronous belt wheel and the helical pitch of ball screw satisfy following requirement: guarantee that described stepper motor can realize that minimum application of sample incremental change is the synchronizing control of 0.5 μ l to 500 μ l specification syringes; Described stepper motor is by motor synchronous belt wheel, band and the rotation of synchronizing wheel drive ball screw synchronously, drive slide block along described guide rod moving linearly by the feed screw nut again, thereby drive syringe piston rod moving linearly in syringe needle tube by driving device, under the cooperation of solenoid valve, realize extraction and discharging to sample and reagent.
Described pedestal is a die casting, its front panel and wallboard is one-body molded all around.
Described ball screw is near an end of synchronizing wheel, being provided with bearing seat in described pedestal wallboard place is supported fixing, two bearings arranged side by side are arranged in this bearing seat, and by set nut described two bearings is given pretension, the other end is then by the support of being floated of another bearing.
Described syringe support is provided with two supporting plates that have " V " v notch v, and described syringe needle tube is fixed in described two " V " v notch vs.
The through hole internal fixation that described guide rod passes through that is used in the described slide block has linear bearing, and described guide rod passes in described linear bearing.
Described pedestal also comprises dustproof back shroud, and this dustproof back shroud is sealed on described slide block, ball wire bar pair and guide rod in the cavity that is surrounded by wallboard around the pedestal.
Compare with prior art, the technique effect that the utility model is used for the single needle sample adding device of automatic clinical chemistry analyzer is: 1. utilize cover injector drive module drive one 500 a μ l syringe, cooperate a sampling needle and a cover solenoid valve to finish application of sample requirement to 3-45 μ l sample application amount and 45-450 μ l reagent application of sample amount, greatly reduce the manufacturing and the maintenance cost of Biochemical Analyzer; 2. the feed screw nut adopts the end face flange to be connected with slide block, and the through hole in feed screw nut's outside surface and the slide block leaves radial play, there is not the requirement of cooperation, slide block must guarantee that by original position, three holes tolerance becomes position, a hole tolerance that only needs now to guarantee two guide rods and gets final product adding man-hour, made things convenient for processing and fabricating, and in assembling process, to ball wire bar pair do not have additional radially with the external force of wobbler action, can bring into play to greatest extent ball wire bar pair high precision and long-life; 3. pedestal adopts die casting and front panel and wallboard is one-body molded all around, has reduced processing cost and assembly difficulty, and has improved the intensity and the structural rigidity of pedestal; 4. adopt fixedly syringe of two supporting plates that have " V " v notch v, increased the contact length of syringe needle tube and syringe support, dead in line degree when guaranteeing the axis of syringe external diameter and piston motion has reduced because of the influence to the application of sample precision of syringe external diameter and piston motion decentraction.
Description of drawings
Fig. 1 is that the single needle sample adding device master that the utility model is used for automatic clinical chemistry analyzer looks synoptic diagram;
Fig. 2 is the three-dimensional cross-sectional schematic (cuing open pedestal wallboard all around among the figure) of the injector drive module 100 of described single needle sample adding device;
Fig. 3 is the perspective view of described injector drive module 100 from another view;
The described injector drive module 100 of Fig. 4 is from the three-dimensional cross-sectional schematic (cuing open front panel and syringe the figure) of another view.
Embodiment is described in further detail below in conjunction with the most preferred embodiment shown in the accompanying drawing.
The utility model is used for the single needle sample adding device of automatic clinical chemistry analyzer, as shown in Figure 1, comprises a cover injector drive module 100, a cover sampling needle 200 and a cover solenoid valve 300.
As Fig. 2, shown in Figure 4, described injector drive module 100 comprises: syringe 130, slide block 150, ball wire bar pair and two guide rods 170 of pedestal 110, stepper motor 120,500 μ l specifications, and syringe support 180; Described ball wire bar pair comprises ball screw 160 and feed screw nut 168.
To shown in Figure 4, described pedestal 110 die castings comprise front panel 111 and perpendicular to wallboard and dustproof back shroud 113 around this front panel 111 as Fig. 2, and its front panel 111 and wallboard is one-body molded all around; Described stepper motor 120 is fixed on the described pedestal 110; Be provided with in the described slide block 150 and be used for three through holes that described ball wire bar pair and two guide rods 170 pass through, supported by bearing in wallboard place, described pedestal 110 two ends behind the through hole in the middle of described ball wire bar pair passes through, guarantee that described ball screw 160 can rotate and axially can not move, describedly be used for the two through hole internal fixation that two guide rods 170 pass through linear bearing 153 is arranged, described guide rod 170 passes in described linear bearing 153, is fixed on described pedestal 110 two ends wallboards again; Described dustproof back shroud 113 is sealed on described slide block 150, ball screw 160 and guide rod 170 in the cavity that is surrounded by wallboard around the pedestal; Described ball screw 160 1 ends are linked with synchronizing wheel 161 after also passing through the wallboard of described pedestal 110 1 ends, and this synchronizing wheel 161 is by being with 121 to be connected with motor synchronous belt wheel 122 synchronously; Described injector drive module 100 also comprises the driving device 190 that is fixed on the described slide block 150, and this driving device 190 is connected and fixed with syringe piston rod 131 after passing the bar shaped notch 112 that is opened on the described pedestal front panel 111 again; Described syringe 130 needle tubings are fixed in the syringe support 180; As shown in Figure 4, described feed screw nut 168 has the end face flange and is connected with described slide block 150 by this end face flange, and the slide block 150 interior through holes that described feed screw nut's 168 outside surface is corresponding with it leave radial play; Described synchronizing wheel 161 satisfies following requirement with the ratio of gear of motor synchronous belt wheel 122 and the helical pitch of ball screw 160: guarantee that described stepper motor 120 can be the synchronizing control of 0.5 μ l to the minimum application of sample incremental change of 500 μ l specification syringes, 130 realizations; Described stepper motor 120 by motor synchronous belt wheel 122, synchronously be with 121 and synchronizing wheel 161 drive ball screws 160 and rotate, drive slide block 150 along described guide rod 170 moving linearlies by feed screw nut 168 again, thereby drive syringe piston rod 131 moving linearly in syringe needle tube by driving device 190, under the cooperation of solenoid valve 300, realize extraction and discharging to sample and reagent.
In the utility model, the support pattern of described ball screw is: referring to Fig. 2 and Fig. 4, described ball screw 160 is near an end of synchronizing wheel 161, being provided with bearing seat 163 in described pedestal 110 wallboard places is supported fixing, two bearings 163 ' arranged side by side are arranged in this bearing seat 163, and giving pretension by 164 pairs of described two bearings 163 ' of set nut, the other end is then by the support of being floated of another bearing 165.Improved the axial transmission rigidity of ball wire bar pair so greatly.
As shown in Figure 3, the syringe support 180 that the utility model is used for the single needle sample adding device of automatic clinical chemistry analyzer is provided with two supporting plates 181 that have " V " v notch v, described syringe 130 needle tubings are fixed in described two " V " v notch vs, increased the contact length of syringe needle tube and syringe support like this, the dead in line degree the when axis of assurance syringe external diameter and piston motion.
The utility model is used for the single needle sample adding device of automatic clinical chemistry analyzer, synchronizing wheel 161 is 1: 2.4 with the ratio of gear of motor synchronous belt wheel 122, the ball screw helical pitch is 2.5mm, realized finishing suction to 3-45 μ l sample application amount and 45-450ul reagent application of sample amount with one 500 μ l syringe, with respect to prior art, the allocation units 1.2mm/ μ l of every microlitre correspondence is become allocation units 0.12mm/ μ l, make the ball screw assembly, linear movement direction millimeter amount of feeding increase 10 times, satisfy simultaneously: application of sample incremental change 0.5 μ l, the requirement of repeatability≤2% during trueness error during 3 μ l≤5%, 3 μ l
Claims (6)
1. a single needle sample adding device that is used for automatic clinical chemistry analyzer comprises injector drive module (100), sampling needle (200) and solenoid valve (300), it is characterized in that:
Described injector drive module (100), sampling needle (200) and solenoid valve (300) all have only a cover;
Described injector drive module (100) comprising: syringe (130), slide block (150), ball wire bar pair and the guide rod (170) of pedestal (110), stepper motor (120), 500 μ l specifications, and syringe support (180);
Described ball wire bar pair comprises ball screw (160) and feed screw nut (168);
Described pedestal (110) comprises front panel (111) and perpendicular to wallboard around this front panel (111), described stepper motor (120) is fixed on the described pedestal (110); After described ball wire bar pair and guide rod (170) pass through the through hole that is opened in the described slide block (150), described guide rod (170) two ends are fixed on the wallboard of described pedestal (110) two ends, described ball screw (160) is supported by bearing in wallboard place, described pedestal (110) two ends, guarantees that described ball screw (160) can rotate and axially can not move;
Described ball screw (160) one ends are linked with synchronizing wheel (161) after also passing through the wallboard of described pedestal (110) one ends, and this synchronizing wheel (161) is connected with motor synchronous belt wheel (122) by synchronous band (121);
Described injector drive module (100) also comprises the driving device (190) that is fixed on the described slide block (150), and this driving device (190) is connected and fixed with syringe piston rod (131) after passing the bar shaped notch (112) that is opened on the described pedestal front panel (111) again; Described syringe (130) needle tubing is fixed in the syringe support (180);
Described feed screw nut (168) has the end face flange and is connected with described slide block (150) by this end face flange,
The interior through hole of slide block (150) that described feed screw nut's (168) outside surface is corresponding with it leaves radial play;
Described synchronizing wheel (161) satisfies following requirement with the ratio of gear of motor synchronous belt wheel (122) and the helical pitch of ball screw (160): guarantee that described stepper motor (120) can be the synchronizing control of 0.5 μ l to the minimum application of sample incremental change of 500 μ l specification syringes (130) realization;
Described stepper motor (120) is by motor synchronous belt wheel (122), band (121) and synchronizing wheel (161) drive ball screw (160) rotation synchronously, drive slide block (150) along described guide rod (170) moving linearly by feed screw nut (168) again, thereby drive syringe piston rod (131) moving linearly in syringe needle tube by driving device (190), under the cooperation of solenoid valve (300), realize extraction and discharging to sample and reagent.
2. the single needle sample adding device that is used for automatic clinical chemistry analyzer as claimed in claim 1 is characterized in that: described pedestal (110) is a die casting, its front panel (111) and wallboard is one-body molded all around.
3. the single needle sample adding device that is used for automatic clinical chemistry analyzer as claimed in claim 1, it is characterized in that: described ball screw (160) is near an end of synchronizing wheel (161), being provided with bearing seat (163) in described pedestal (110) wallboard place is supported fixing, two bearings (163 ') arranged side by side are arranged in this bearing seat (163), and described two bearings (163 ') being given pretension by set nut (164), the other end is then by another bearing (165) support of being floated.
4. the single needle sample adding device that is used for automatic clinical chemistry analyzer as claimed in claim 1, it is characterized in that: described syringe support (180) is provided with two supporting plates (181) that have " V " v notch v, and described syringe (130) needle tubing is fixed in described two " V " v notch vs.
5. the single needle sample adding device that is used for automatic clinical chemistry analyzer as claimed in claim 1, it is characterized in that: the through hole internal fixation that described guide rod (170) passes through that is used in the described slide block (150) has linear bearing (153), and described guide rod (170) passes in described linear bearing (153).
6. the single needle sample adding device that is used for automatic clinical chemistry analyzer as claimed in claim 1, it is characterized in that: described pedestal (110) also comprises dustproof back shroud (113), and this dustproof back shroud (113) is sealed on described slide block (150), ball wire bar pair and guide rod (170) in the cavity that is surrounded by wallboard around the pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520120545 CN2862041Y (en) | 2005-12-13 | 2005-12-13 | Single needle sampling apparatus for full-automatic biochemistry analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520120545 CN2862041Y (en) | 2005-12-13 | 2005-12-13 | Single needle sampling apparatus for full-automatic biochemistry analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2862041Y true CN2862041Y (en) | 2007-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520120545 Expired - Lifetime CN2862041Y (en) | 2005-12-13 | 2005-12-13 | Single needle sampling apparatus for full-automatic biochemistry analyzer |
Country Status (1)
| Country | Link |
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| CN (1) | CN2862041Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806673A (en) * | 2010-04-16 | 2010-08-18 | 深圳市普康电子有限公司 | Sampling needle driving mechanism for biochemical analyzer |
| CN102221258A (en) * | 2010-04-14 | 2011-10-19 | 泰怡凯电器(苏州)有限公司 | Movable type air treatment device |
| CN102305871A (en) * | 2011-08-24 | 2012-01-04 | 山东兰桥医学科技有限公司 | Multichannel blood distributing device and multichannel blood distributing method |
| CN102507967A (en) * | 2011-10-26 | 2012-06-20 | 深圳市锦瑞电子有限公司 | Syringe device |
| CN102729244A (en) * | 2012-07-05 | 2012-10-17 | 深圳市爱康电子有限公司 | Sample adding arm |
| CN101819193B (en) * | 2009-10-23 | 2013-01-23 | 郑州克莱克特科学仪器有限公司 | Multifunctional gas-chromatograph automatic sample injector |
| CN103630701A (en) * | 2013-10-29 | 2014-03-12 | 北京利德曼生化股份有限公司 | High-accuracy sampling device and installation and debugging method |
| CN108980290A (en) * | 2018-07-09 | 2018-12-11 | 嘉兴科瑞迪医疗器械有限公司 | A kind of sample loading gun minute hand transmission mechanism |
| CN109387652A (en) * | 2017-08-04 | 2019-02-26 | 河北艾驰生物科技有限公司 | A kind of novel injection pump |
| CN110488036A (en) * | 2019-09-06 | 2019-11-22 | 南京颐兰贝生物科技有限责任公司 | Biochemical Analyzer injection device |
-
2005
- 2005-12-13 CN CN 200520120545 patent/CN2862041Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819193B (en) * | 2009-10-23 | 2013-01-23 | 郑州克莱克特科学仪器有限公司 | Multifunctional gas-chromatograph automatic sample injector |
| CN102221258A (en) * | 2010-04-14 | 2011-10-19 | 泰怡凯电器(苏州)有限公司 | Movable type air treatment device |
| CN101806673A (en) * | 2010-04-16 | 2010-08-18 | 深圳市普康电子有限公司 | Sampling needle driving mechanism for biochemical analyzer |
| CN102305871A (en) * | 2011-08-24 | 2012-01-04 | 山东兰桥医学科技有限公司 | Multichannel blood distributing device and multichannel blood distributing method |
| CN102507967A (en) * | 2011-10-26 | 2012-06-20 | 深圳市锦瑞电子有限公司 | Syringe device |
| CN102729244A (en) * | 2012-07-05 | 2012-10-17 | 深圳市爱康电子有限公司 | Sample adding arm |
| CN102729244B (en) * | 2012-07-05 | 2014-06-18 | 深圳市爱康生物科技有限公司 | Sample adding arm |
| CN103630701A (en) * | 2013-10-29 | 2014-03-12 | 北京利德曼生化股份有限公司 | High-accuracy sampling device and installation and debugging method |
| CN109387652A (en) * | 2017-08-04 | 2019-02-26 | 河北艾驰生物科技有限公司 | A kind of novel injection pump |
| CN108980290A (en) * | 2018-07-09 | 2018-12-11 | 嘉兴科瑞迪医疗器械有限公司 | A kind of sample loading gun minute hand transmission mechanism |
| CN110488036A (en) * | 2019-09-06 | 2019-11-22 | 南京颐兰贝生物科技有限责任公司 | Biochemical Analyzer injection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070124 |
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| EXPY | Termination of patent right or utility model |