CN108246376B - Quantitative suction and drip tube - Google Patents
Quantitative suction and drip tube Download PDFInfo
- Publication number
- CN108246376B CN108246376B CN201810226192.6A CN201810226192A CN108246376B CN 108246376 B CN108246376 B CN 108246376B CN 201810226192 A CN201810226192 A CN 201810226192A CN 108246376 B CN108246376 B CN 108246376B
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- Prior art keywords
- tube
- outer sleeve
- sleeve
- drip tube
- quantitative
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- 238000007789 sealing Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 19
- 238000005070 sampling Methods 0.000 description 18
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
- B01L3/0213—Accessories for glass pipettes; Gun-type pipettes, e.g. safety devices, pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0832—Geometry, shape and general structure cylindrical, tube shaped
- B01L2300/0838—Capillaries
Landscapes
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a novel quantitative drip tube which comprises a tube body and a cup body, wherein the tube body comprises a drip tube, an outer sleeve, an inner sleeve, a bracket and a capillary tube which are sequentially arranged from top to bottom, the upper port of the outer sleeve extends inwards along the radial direction of the outer sleeve and is connected with the lower end of the drip tube, the drip tube is communicated with the outer sleeve, the inner sleeve is sleeved on the inner side of the lower part of the outer sleeve, and the lower end of the inner sleeve is connected with the capillary tube through the bracket; the tube body is internally provided with a capacity adjusting rod, the capacity adjusting rod comprises a clamping block and a rod body arranged at the lower end part of the clamping block, the clamping block is clamped in the inner sleeve, a first clamping step is arranged at the upper end face of the clamping block corresponding to the inner sleeve, the diameter of the rod body is smaller than the inner diameter of the lower port of the inner sleeve, and the rod body extends out of the inner sleeve and downwards extends into the capillary tube; the cup body is of a sleeve-shaped structure with one end closed, the outer wall of the upper part of the outer sleeve is provided with an annular boss, the cup body is sleeved on the outer sleeve and positioned at the lower part of the annular boss, and the inner wall of the cup body is tightly matched with the outer sleeve.
Description
Technical Field
The invention relates to a laboratory liquid sampling and dropping device, in particular to a novel quantitative suction dropper.
Background
Along with the popularization of semi-automatic analyzers in the field of medical biochemical inspection, micro quantitative sampling has become a key place for detecting whether a result is accurate or not. Due to the miniaturization of the detection sample, the detection needs to be completed by a microsampling and dripping device.
The Chinese patent CN201320388585.X discloses a quantitative drip tube and a sample cup with the quantitative drip tube, which consists of the quantitative drip tube, a sample cup cover and a sample cup body, wherein the quantitative drip tube comprises a drip tube, a suction tube and an outer sleeve, the quantitative drip tube is used for completing sampling and dripping, the operation is simple, the experimental efficiency is high, but when the diameter of a capillary tube in the quantitative drip tube is larger, the liquid sucking speed is very slow, the working efficiency is influenced, so the sampling capacity is very limited and is only 5-10 uL, and the quantitative drip tube is not suitable for experiments when more liquid needs to be sampled at one time.
In view of the above, the present inventors have devised a novel quantitative pipette, which is generated by this scheme.
Disclosure of Invention
In order to solve the problems, the technical scheme of the invention is as follows:
The novel quantitative drip tube comprises a tube body and a cup body, wherein the tube body comprises a drip tube, an outer sleeve, an inner sleeve, a bracket and a capillary tube which are sequentially arranged from top to bottom, the upper port of the outer sleeve extends inwards along the radial direction of the upper port and is connected with the lower end of the drip tube, the drip tube is communicated with the outer sleeve, the inner sleeve is sleeved on the inner side of the lower part of the outer sleeve, and the lower end of the inner sleeve is connected with the capillary tube through the bracket; the device comprises a capillary tube, a tube body, a capillary tube, a clamping block, a first clamping step, a second clamping step, a first clamping hole and a second clamping step, wherein the tube body is internally provided with a capacity adjusting rod, the capacity adjusting rod comprises a clamping block and a rod body arranged at the lower end part of the clamping block, the clamping block is clamped in the inner sleeve, the upper end face of the inner sleeve is provided with the first clamping step corresponding to the clamping block, the diameter of the rod body is smaller than the inner diameter of the lower port of the inner sleeve, and the rod body extends out of the inner sleeve and downwards extends into the capillary tube; the cup body is of a sleeve-shaped structure with one end being closed, an annular boss is arranged on the outer wall of the upper portion of the outer sleeve, the cup body is sleeved on the outer sleeve and is located at the lower portion of the annular boss, and the inner wall of the cup body is tightly matched with the outer sleeve.
Further, the lower part of the capillary tube is in an inverted frustum shape, and the lower end of the rod body is correspondingly arranged in a sharp shape.
Further, a cup cover is arranged above the tube body, the cup cover is sleeved on the outer sleeve and is positioned at the upper part of the annular boss, the inner wall of the cup cover is tightly matched with the outer sleeve, and the inner side of the top of the cup cover is abutted with the upper end of the dropper.
Further, a second groove is formed in the inner side of the top of the cup cover and corresponds to the upper end of the dropper, and the inner wall of the second groove is tightly matched with the dropper.
Further, a spherical protrusion is arranged at the bottom of the second groove.
Further, a sealing step is arranged at the lower port of the cup cover corresponding to the annular boss.
Furthermore, the inner walls of the cup body and the cup cover are provided with a plurality of convex rings corresponding to the outer sleeve.
Further, the upper end of the clamping block extends upwards to be in butt joint with the inner side of the top of the outer sleeve, a first groove is formed in the upper end of the clamping block, corresponding to the lower end of the dropper, and the dropper is communicated with the outer sleeve through the first groove.
Further, a reinforcing rib is arranged between the outer sleeve and the dropper.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, a capillary tube with larger capacity can be used for absorbing liquid, and the capacity adjusting rod is arranged in the tube body and extends into the capillary tube, so that the liquid absorbing speed can be increased while the sampling capacity of the quantitative absorbing and dropping tube can be increased, the working efficiency can be improved, and the quantitative absorbing and dropping tube is suitable for sampling liquid with higher capacity at one time and has a wide market prospect; and the quantitative drip tube with various capacities and specifications can be manufactured by properly selecting the inner diameter and the length of the capillary tube and the diameter and the length of the rod body.
Drawings
The invention will be further described with reference to examples of embodiments with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a schematic view of the structure of the pipe body of the present invention;
FIG. 3 is a schematic view of an exploded construction of the tube body of the present invention;
fig. 4 is a cross-sectional view of a cap of the present invention.
Description of the reference numerals:
2-cup body, 3-cup cover, 11-dropper, 12-outer sleeve, 121-annular boss, 13-inner sleeve, 14-bracket, 15-capillary, 16-capacity adjusting rod, 161-fixture block, 1611-first groove, 1612-first clamping step, 162-rod body, 31-second groove, 32-spherical protrusion, 33-sealing step and 34-convex ring.
Detailed Description
Referring to fig. 1 to 4, as a novel quantitative drip tube of the preferred embodiment of the present invention, the novel quantitative drip tube comprises a tube body, a cup body 2 and a cup cover 3, wherein the tube body comprises a drip tube 11, an outer sleeve 12, an inner sleeve 13, a bracket 14 and a capillary tube 15 which are sequentially arranged from top to bottom, an upper port of the outer sleeve 12 extends inwards along the radial direction of the upper port and is connected with the lower end of the drip tube 11, the drip tube 11 is communicated with the outer sleeve 12, the inner sleeve 13 is sleeved on the inner side of the lower part of the outer sleeve 12, the lower end of the inner sleeve 13 is connected with the capillary tube 15 through the bracket 14, and a second clamping step (not labeled in the figure) is arranged on the inner side wall of the outer sleeve 12 corresponding to the upper end of the inner sleeve 13, so that accurate installation between the inner sleeve 13 and the outer sleeve 12 is facilitated; the tube body is internally provided with a capacity adjusting rod 16, the capacity adjusting rod 16 comprises a clamping block 161 and a rod body 162 arranged at the lower end part of the clamping block 161, the clamping block 161 is clamped in the inner sleeve 13, a first clamping step 1612 is arranged at the upper end surface of the inner sleeve 13, so that the capacity adjusting rod 16 is inserted into an accurate position when being inserted into the inner sleeve 13, the diameter of the rod body 162 is smaller than the inner diameter of the lower port of the inner sleeve 13, the rod body 162 extends out of the inner sleeve 13 and downwards extends into the capillary 15, the depth of the rod body 162 extending into the capillary 15 and the diameter of the rod body 162 are matched with the capillary 15 with corresponding specifications, and after the rod body 162 of the capacity adjusting rod 16 is inserted into the accurate position in the capillary 15, the collection capacity of the capillary 15 is adjusted to the capacity specification set by the quantitative drip absorbing tube; the cup body 2 is of a sleeve-shaped structure with one end closed, the cup body 2 is made of elastic polymer materials meeting the requirements of medical instruments, the extrusion is convenient, the outer wall of the upper part of the outer sleeve 12 is provided with an annular boss 121, the cup body 2 is sleeved on the outer sleeve 12 and is positioned at the lower part of the annular boss 121, and the inner wall of the cup body is tightly matched with the outer sleeve 12; a cup cover 3 is arranged above the tube body, the cup cover 3 is sleeved on the outer sleeve 12 and is positioned at the upper part of the annular boss 121, the inner wall of the cup cover is tightly matched with the outer sleeve 12, and the inner side of the top of the cup cover is abutted with the upper end of the dropper 11. In this embodiment, the dropper 11, the outer sleeve 12, the inner sleeve 13, the rod 162 and the capillary 15 are all coaxially arranged, and the number of the brackets 14 is two. The invention can adopt the capillary 15 with larger capacity to absorb liquid, and can increase the sampling capacity of the quantitative absorbing and dropping pipe and simultaneously accelerate the liquid absorbing speed and improve the working efficiency by adopting the structural design, so that the invention is suitable for sampling liquid with higher capacity at one time.
Specifically, the lower portion of capillary 15 is in the shape of an inverted truncated cone, and the lower end of rod 162 is correspondingly pointed with respect to the lower portion of capillary 15, facilitating the drawing of liquid.
The inner side of the top of the cup cover 3 is provided with a second groove 31 corresponding to the upper end of the dropper 11, the inner wall of the second groove 31 is tightly matched with the dropper 11, the bottom of the second groove 31 (corresponding to the mouth of the dropper 11) is provided with a spherical protrusion 32, the lower port of the cup cover 3 is provided with a sealing step 33 corresponding to an annular boss 121, the inner walls of the cup body 2 and the cup cover 3 are both provided with a plurality of convex rings 34 corresponding to the outer sleeve 12, the cup cover 3 can be tightly matched with the outer sleeve 12 and the dropper 11 by adopting the structure, the cup body 2 is tightly matched with the outer sleeve 12, the sealing performance is good, and the leakage phenomenon can be effectively prevented when sampling liquid and reagent are mixed.
The upper end of the clamping block 161 extends upwards to be abutted against the inner side of the top of the outer sleeve 12, a first groove 1611 for giving way is arranged at the upper end of the clamping block corresponding to the lower end of the dropper 11, and the dropper 11 is communicated with the outer sleeve 12 through the first groove 1611. If the capacity adjusting rod 16 is not inserted, the capacity adjusting rod 16 can be further pressed to an accurate position when the inner sleeve 13 is sleeved in the outer sleeve 12, so that the accuracy of the sampling capacity of the quantitative suction and drip tube is ensured.
The inner sleeve 13, the support 14 and the capillary 15 are of an integrated structure, the dropper 11 and the outer sleeve 12 are of an integrated structure, the clamping block 161 and the rod 162 are of an integrated structure, the whole structure strength is improved by adopting the connecting structure, and the reinforcing ribs (not shown) are arranged between the outer sleeve 12 and the dropper 11, so that the dropper 11 can be effectively prevented from being broken.
When the quantitative suction and drip tube is used, the cup body 2 is pulled out, and the capillary 15 is used for sampling the liquid to be sampled; then the end of the capillary 15 is inserted into the cup body 2 filled with the quantitative reagent, and the sampling liquid and the reagent are fully mixed; the cup cover 3 is pulled out, the cup body 2 is extruded, so that the mixed liquid flows through the inner sleeve 13 and the outer sleeve 12 in sequence and finally drips out from the dropper 11, the operation time is greatly shortened, and the working efficiency is improved.
In summary, the invention has the following beneficial effects:
1. According to the invention, a capillary tube with larger capacity can be used for absorbing liquid, and the capacity adjusting rod is arranged in the tube body and extends into the capillary tube, so that the liquid absorbing speed can be increased while the sampling capacity of the quantitative absorbing and dropping tube can be increased, the working efficiency can be improved, and the quantitative absorbing and dropping tube is suitable for sampling liquid with higher capacity at one time and has a wide market prospect; and by properly selecting the inner diameter and the length of the capillary tube and the diameter and the length of the rod body, the quantitative suction and drip tube with various capacities and specifications can be manufactured, and 20 uL-30 uL of single sampling can be realized.
2. The quantitative sampling and dripping device is simple in structure, can be used for completing quantitative sampling and dripping, is simple and convenient to operate, improves the efficiency, and reduces the detection cost;
3. The spherical surface protrusion at the bottom of the convex ring, the second groove and the second groove is arranged in the cup cover, the lower port of the cup cover is provided with the sealing ladder, so that the close fit of the cup cover, the dropper and the outer sleeve is realized, the cup body is provided with the three convex rings, the close fit of the cup body and the outer sleeve is realized, the sealing performance is good, and the leakage phenomenon can be effectively prevented when sampling liquid and the reagent are mixed.
4. The lower part of the capillary tube is arranged into an inverted frustum shape, so that the liquid can be conveniently sucked.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the above embodiments, but is capable of being modified or applied directly to other applications without modification, as long as various insubstantial modifications of the method concept and technical solution of the invention are adopted, all within the scope of the invention.
Claims (8)
1. The quantitative drip tube is characterized by comprising a tube body and a cup body, wherein the tube body comprises a drip tube, an outer sleeve, an inner sleeve, a bracket and a capillary tube which are sequentially arranged from top to bottom, an upper port of the outer sleeve extends inwards along the radial direction of the outer sleeve and is connected with the lower end of the drip tube, the drip tube is communicated with the outer sleeve, the inner sleeve is sleeved on the inner side of the lower part of the outer sleeve, and the lower end of the inner sleeve is connected with the capillary tube through the bracket; the device comprises a tube body, a capillary tube, a clamping block, a first clamping step, a second clamping step, a first clamping step and a second clamping step, wherein the tube body is internally provided with a capacity adjusting rod, the capacity adjusting rod comprises the clamping block and a rod body arranged at the lower end part of the clamping block, the clamping block is clamped in an inner sleeve, the upper end face of the inner sleeve is correspondingly provided with the first clamping step, the diameter of the rod body is smaller than the inner diameter of the lower port of the inner sleeve, the rod body extends out of the inner sleeve and downwards extends into the capillary tube, the depth of the rod body extending into the capillary tube is matched with the capillary tube with corresponding specification; the cup body is of a sleeve-shaped structure with one end closed, an annular boss is arranged on the outer wall of the upper part of the outer sleeve, the cup body is sleeved on the outer sleeve and is positioned at the lower part of the annular boss, and the inner wall of the cup body is tightly matched with the outer sleeve; the lower part of the capillary tube is in an inverted frustum shape, the lower end of the rod body is correspondingly provided with a sharp shape, a cup cover is arranged above the tube body, the cup cover is sleeved on the outer sleeve and is positioned at the upper part of the annular boss, the inner wall of the cup cover is tightly matched with the outer sleeve, and the inner side of the top of the cup cover is abutted to the upper end of the dropper.
2. The quantitative drip tube of claim 1, wherein the inner side of the top of the cup cover is provided with a second groove corresponding to the upper end of the drip tube, and the inner wall of the second groove is tightly matched with the drip tube.
3. A quantitative drip tube according to claim 2, characterized in that the bottom of the second recess is provided with a spherical protrusion.
4. The quantitative drip tube of claim 1, wherein the lower port of the cup cap is provided with a sealing step corresponding to the annular boss.
5. The quantitative drip tube of claim 1, wherein the inner wall of the cup cover is provided with a plurality of convex rings corresponding to the outer sleeve.
6. The quantitative drip tube of claim 1, wherein the inner wall of the cup body is provided with a plurality of convex rings corresponding to the outer sleeve.
7. The quantitative drip tube according to claim 1, wherein the upper end of the clamping block extends upwards to be abutted against the inner side of the top of the outer sleeve, a first groove is formed in the upper end of the clamping block, corresponding to the lower end of the drip tube, and the drip tube is communicated with the outer sleeve through the first groove.
8. A quantitative drip tube according to claim 1, wherein a reinforcing rib is provided between the outer sleeve and the drip tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810226192.6A CN108246376B (en) | 2018-03-19 | 2018-03-19 | Quantitative suction and drip tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810226192.6A CN108246376B (en) | 2018-03-19 | 2018-03-19 | Quantitative suction and drip tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108246376A CN108246376A (en) | 2018-07-06 |
| CN108246376B true CN108246376B (en) | 2024-05-17 |
Family
ID=62747184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810226192.6A Active CN108246376B (en) | 2018-03-19 | 2018-03-19 | Quantitative suction and drip tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108246376B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813708A (en) * | 2019-03-28 | 2019-05-28 | 厦门市中可医疗科技有限公司 | It is a kind of for in-vitro diagnosis industry can quantitative sampling portable inspection plastics box |
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| CN208115785U (en) * | 2018-03-19 | 2018-11-20 | 厦门汇川工贸有限公司 | A kind of novel quantitative suction dropper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9221046B2 (en) * | 2014-01-30 | 2015-12-29 | Rainin Instrument, Llc | Air displacement pipette with enhanced blowout |
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2018
- 2018-03-19 CN CN201810226192.6A patent/CN108246376B/en active Active
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| KR20040063634A (en) * | 2003-01-08 | 2004-07-14 | 삼성광주전자 주식회사 | The Instant Ice Cream Machine |
| CN203408722U (en) * | 2013-07-02 | 2014-01-29 | 江苏康健医疗用品有限公司 | Quantitative suction dropper and sample cup employing same |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108246376A (en) | 2018-07-06 |
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