CN106950390A - Biochemical instruments blood sample automatic sample detecting head - Google Patents
Biochemical instruments blood sample automatic sample detecting head Download PDFInfo
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- CN106950390A CN106950390A CN201710260184.9A CN201710260184A CN106950390A CN 106950390 A CN106950390 A CN 106950390A CN 201710260184 A CN201710260184 A CN 201710260184A CN 106950390 A CN106950390 A CN 106950390A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
The present invention relates to a kind of biochemical instruments blood sample automatic sample detecting head, including interior conductive detecting head, lock ring has lock ring on one layer of intermediate insulating layer, intermediate insulating layer to have one layer of outer conductive detecting layer on interior conductive detecting head；The front end of described interior conductive detecting head and the front end flush arrangement of outer conductive detecting layer, or the front end of interior conductive detecting head have a difference in height for being less than 0.5mm with the front end of outer conductive detecting layer.Detecting head is avoided to judge by accident, it is ensured that detecting head detects the accuracy of liquid level.
Description
Technical field
The present invention relates to biochemical instruments, it is related to a kind of biochemical instruments blood sample automatic sample detecting head.
Background technology
Automatic biochemical immunity analysis instrument blood sample automatic sample is such to existing biochemical instruments in other words, positioned at sample-adding
The bottom of container sets sample introduction strip conductor or sample conduction rack, and the metal detection head directly over feed container is gradually downward
Detection, when metal detection head touches the blood sample of feed container, i.e., liquid level is determined, such strip conductor or sample are conductive
Blood sample, metal detection head in frame, feed container constitute a capacitor, are contacted by metal detection head after liquid level in electric capacity
Dielectric is changed, and can cause the change of electric capacity in whole system, because according to this metal detection head and sample introduction strip conductor or sample
Capacitance variations between this conduction rack, you can judge whether metal detection head touches liquid level, so as to give biochemical instruments controller
Judge sample-adding.But this structure exist due to when metal detection head is moved down, it is possible to can touch moistening tube wall or
The blood or serum adhered on tube wall, now metal detection head can also provide signal, expression has detected liquid level, so as to send out
Raw erroneous judgement.Further, since air is also a kind of dielectric, metal detection head is sometimes also due to the air above blood sample draws
Play erroneous judgement.
The content of the invention
It is an object of the invention to provide biochemical instruments blood sample automatic sample detecting head, it is to avoid detecting head is judged by accident, protects
Demonstrate,prove the accuracy that detecting head detects liquid level.
In order to realize the above object the technical solution adopted by the present invention is：A kind of biochemical instruments blood sample automatic sample is visited
Lock ring has lock ring on one layer of intermediate insulating layer, intermediate insulating layer to have one on gauge head, including interior conductive detecting head, interior conductive detecting head
The outer conductive detecting layer of layer；
The front end of described interior conductive detecting head and the front end flush arrangement of outer conductive detecting layer, or interior conductive detecting head
The front end of front end and outer conductive detecting layer there is a difference in height for being less than 0.5mm.
Further, the front end of described interior conductive detecting head has one with the front end of outer conductive detecting layer and is less than
0.5mm difference in height, and the front end of the relatively outer conductive detecting layer in front end of interior conductive detecting head is located at low level.
Further, an inverted round platform is constituted from the front end of interior conductive detecting head to the front end of outer conductive detecting layer
Shape, the front end of intermediate insulating layer is filled in described round platform.
The technical effects of the invention are that：The automatic sample detecting head general principle of the present invention is to have broken existing electric capacity
Formula detection principle, uses new resistance-type detection principle, is specifically, and the outer layer of interior conductive detecting head is increased into intermediate insulation
Layer and outer conductive detecting layer, make that automatic sample detecting head is inside and outside to be conductive metal structure, centre have one layer of nonconductive structures every
Absolutely, this structure is when the blood or serum adhered on the tube wall or tube wall that automatic sample detecting head touches moistening, due to
The effect of intermediate insulating layer, conductive detecting head can not constitute loop with outer conductive detecting layer, therefore automatic sample detecting head will not be sent out
Go out signal, it is to avoid detecting head is judged by accident, it is ensured that detecting head detects the accuracy of liquid level.
Brief description of the drawings
Fig. 1 is the schematic diagram of the automatic sample detecting head state to be detected of the present invention；
Fig. 2 detects the schematic diagram of cut-off state for the automatic sample detecting head of the present invention.
Embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
On a kind of biochemical instruments blood sample automatic sample detecting head, including interior conductive detecting head 10, interior conductive detecting head 10
Lock ring has lock ring on one layer of intermediate insulating layer 20, intermediate insulating layer 20 to have one layer of outer conductive detecting layer 30；
The front end of described interior conductive detecting head 10 and the front end flush arrangement of outer conductive detecting layer 30, or interior conductive spy
The front end of gauge head 10 has a difference in height for being less than 0.5mm with the front end of outer conductive detecting layer 30.
The automatic sample detecting head general principle of the present invention is to have broken existing condenser type detection principle, is used new
Resistance-type detection principle, be specifically that the outer layer of interior conductive detecting head 10 is increased into intermediate insulating layer 20 and outer conductive detecting layer
30, make that automatic sample detecting head is inside and outside to be conductive metal structure, there is one layer of nonconductive structures isolation centre, reference picture 1, when
When the detection of automatic sample detecting head is less than blood or serum, the ectonexine of interior conductive detecting head 10 and outer conductive detecting layer 30 without
Method constitutes electrical connection, but when automatic sample detecting head detects blood or serum, because blood or serum are conductive
, interior conductive detecting head 10 and outer conductive detecting layer 30 constitute loop with blood or serum, and such automatic sample detecting head is just
Have signal feedback.This structure touches the blood or blood adhered on the tube wall or tube wall of moistening when automatic sample detecting head
When clear, due to the effect of intermediate insulating layer 20, conductive detecting head 10 can not constitute loop with outer conductive detecting layer 30, therefore add automatically
Sample detecting head will not send signal, it is to avoid detecting head is judged by accident, it is ensured that detecting head detects the accuracy of liquid level.
Certainly, in design when conductive detecting head 10 and outer conductive detecting layer 30, the front end of interior conductive detecting head 10 with it is outer
The front end of conductive detecting layer 30 is concordantly good, and the front end of interior conductive detecting head 10 and the front end of outer conductive detecting layer 30 have one
Difference in height less than 0.5mm is good, because the signal of automatic sample detecting head also has a trickle time difference to controller, therefore
Conductive detecting head 10 and outer conductive detecting layer 30 allow have individual error range in design.
Further, the front end of described interior conductive detecting head 10 has one with the front end of outer conductive detecting layer 30 and is less than
0.5mm difference in height, and the front end of the relatively outer conductive detecting layer 30 in front end of interior conductive detecting head 10 is located at low level.
Further, it is inverted to the front end of outer conductive detecting layer 30 composition one from the front end of interior conductive detecting head 10
Truncated cone-shaped, the front end of intermediate insulating layer 20 is filled in described round platform.
Blood or intraserous is inserted under being in view of automatic sample detecting head, for convenience automatic sample detecting head
It is oriented to, and avoids the stop or collision of blood fat block in such as blood upper strata, the front end of automatic sample detecting head is arranged to
Round table-like, certainly, automatic sample detecting head front end can also be arranged to coniform.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.
Claims (3)
1. a kind of biochemical instruments blood sample automatic sample detecting head, it is characterised in that：Including interior conductive detecting head (10), interior conduction
Lock ring has lock ring on one layer of intermediate insulating layer (20), intermediate insulating layer (20) to have one layer of outer conductive detecting layer on detecting head (10)
(30)；
The front end of described interior conductive detecting head (10) and the front end flush arrangement of outer conductive detecting layer (30), or interior conductive spy
The front end of gauge head (10) has a difference in height for being less than 0.5mm with the front end of outer conductive detecting layer (30).
2. biochemical instruments blood sample automatic sample detecting head according to claim 1, it is characterised in that：Described interior conduction
The front end of detecting head (10) has a difference in height for being less than 0.5mm, and interior conductive spy with the front end of outer conductive detecting layer (30)
The front end of the relatively outer conductive detecting layer (30) in the front end of gauge head (10) is located at low level.
3. biochemical instruments blood sample automatic sample detecting head according to claim 2, it is characterised in that：From interior conductive detection
The front end of head (10) to the front end of outer conductive detecting layer (30) constitutes an inverted truncated cone-shaped, the front end of intermediate insulating layer (20)
It is filled in described round platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260184.9A CN106950390A (en) | 2017-04-20 | 2017-04-20 | Biochemical instruments blood sample automatic sample detecting head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260184.9A CN106950390A (en) | 2017-04-20 | 2017-04-20 | Biochemical instruments blood sample automatic sample detecting head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106950390A true CN106950390A (en) | 2017-07-14 |
Family
ID=59476361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710260184.9A Pending CN106950390A (en) | 2017-04-20 | 2017-04-20 | Biochemical instruments blood sample automatic sample detecting head |
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| Country | Link |
|---|---|
| CN (1) | CN106950390A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5550059A (en) * | 1994-02-23 | 1996-08-27 | Bayer Corporation | Fluid sensing pipette |
| CN102346195A (en) * | 2010-07-30 | 2012-02-08 | 中国科学院金属研究所 | Liquid-sensitivity type sampling needle |
| CN203249890U (en) * | 2013-05-23 | 2013-10-23 | 爱威科技股份有限公司 | Liquid level detection and conductivity measurement sample needle |
| CN204832222U (en) * | 2015-07-13 | 2015-12-02 | 重庆赛航科技发展有限公司 | Automatic sampling system of discernment liquid level |
-
2017
- 2017-04-20 CN CN201710260184.9A patent/CN106950390A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5550059A (en) * | 1994-02-23 | 1996-08-27 | Bayer Corporation | Fluid sensing pipette |
| CN102346195A (en) * | 2010-07-30 | 2012-02-08 | 中国科学院金属研究所 | Liquid-sensitivity type sampling needle |
| CN203249890U (en) * | 2013-05-23 | 2013-10-23 | 爱威科技股份有限公司 | Liquid level detection and conductivity measurement sample needle |
| CN204832222U (en) * | 2015-07-13 | 2015-12-02 | 重庆赛航科技发展有限公司 | Automatic sampling system of discernment liquid level |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170714 |
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| RJ01 | Rejection of invention patent application after publication |