CN111774114B - Single quantitative blood sampling pipette and blood sampling pipetting method thereof - Google Patents
Single quantitative blood sampling pipette and blood sampling pipetting method thereof Download PDFInfo
- Publication number
- CN111774114B CN111774114B CN202010853156.XA CN202010853156A CN111774114B CN 111774114 B CN111774114 B CN 111774114B CN 202010853156 A CN202010853156 A CN 202010853156A CN 111774114 B CN111774114 B CN 111774114B
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- pipette
- air bag
- blood collection
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention discloses an mono-quantitative blood collection pipette and a blood collection and pipetting method thereof, wherein the mono-quantitative blood collection pipette comprises an upper air bag, a lower air bag, a first vent pipe, a second vent pipe, a pipette and a micro blood collection pipe; the invention realizes the function of collecting blood by installing the trace blood collecting tube below the pipette and collecting blood by the capillary principle of the trace blood collecting tube, and designs the ventilation position of the upper end of the trace blood collecting tube between the outer side of the periphery of the trace blood collecting tube and the inner wall of the cavity of the pipette or designs the ventilation position of the upper end of the trace blood collecting tube on the side wall of one side of the pipette, so that a through hole is not required to be formed on the trace blood collecting tube, and the defects of poor yield and high process difficulty of forming the through hole on the trace blood collecting tube are avoided.
Description
Technical Field
The invention relates to an mono-quantitative blood sampling pipette and a blood sampling pipetting method thereof.
Background
Currently, a quantitative pipette is a pipetting tool for sucking a certain amount of liquid and transferring the liquid to another place, the conventional quantitative pipette structure is shown in fig. 1, and comprises an air bag 91, a liquid storage bag 92 and a quantitative pipette 93, wherein the air bag 91 is installed at the upper end of the liquid storage bag 92 in a communicating way, the upper end of the quantitative pipette 93 is inserted from the lower end of the liquid storage bag 92 and extends into the air bag 91 and the liquid storage bag 92, the outer periphery of the quantitative pipette 93 is kept in sealing connection with the inner periphery of the lower end of the liquid storage bag 92, the quantitative pipette with the conventional structure is formed, the air bag 91 is pressed and then loosened, so that the liquid is sucked from the quantitative pipette 93 to fill the whole quantitative pipette 93, and excessive liquid overflows into the liquid storage bag 92 below from the upper end of the quantitative pipette 93, and then the air bag 91 is pressed again to drain the liquid in the quantitative pipette 93, so that the whole sucking pipetting process is formed; however, the liquid overflowed into the liquid storage bag 92 cannot be discharged by squeezing the air bag 91, so that a part of liquid sample is wasted, and a great cost is consumed for the valuable sample, and in addition, some novice operators are excessively strong in squeezing the air bag 91, so that the whole of the quantitative pipette 93, the liquid storage bag 92 and the air bag 91 is filled with liquid, and the air pressure is insufficient to cause the liquid transfer failure; the quantitative pipette structure can be derived into various deformation structures, such as a Chinese patent with publication number of CN205126256U, wherein a liquid storage bag is communicated with the upper end side of the quantitative pipette, and backflow is prevented through an overflow pipeline which is obliquely designed, so that the quantitative pipette structure has the same defects, a pipette which can extrude, discharge and collect redundant liquid samples and prevent excessive suction defects caused by the fact that a novice operator cannot control extrusion force well is required to be developed, and in addition, the structure which can integrate blood collection and pipetting after the problems are realized is also the development key point of the invention.
Disclosure of Invention
Aiming at the defects of the prior art, the invention solves the problems that: the single-quantitative blood collection pipette and the blood collection pipetting method thereof have the advantages that the blood collection and pipetting are integrated, quantitative pipetting can be realized, excess liquid samples can be extruded and discharged, and the defect of excessive suction caused by the fact that a novice operator cannot control extrusion force is avoided.
In order to solve the problems, the invention adopts the following technical scheme:
an mono-quantitative blood collection pipette comprises an upper air bag, a lower air bag, a first vent pipe, a second vent pipe, a pipette and a trace blood collection tube; the upper end of the upper air bag is closed, and one side of the lower end of the upper air bag is provided with an upper opening; the lower air bag is positioned below the upper air bag; the upper end of the lower air bag is closed, and one side of the lower end of the lower air bag is provided with a lower opening; the upper end of the first vent pipe is communicated and connected to an upper opening at one side of the lower end of the upper air bag; the upper end of the second vent pipe is communicated and connected to a lower opening at one side of the lower end of the lower air bag; the pipette is arranged below the first ventilation pipe and the second ventilation pipe; the first vent pipe and the second vent pipe are respectively positioned at two sides above the pipette; the lower ends of the first ventilation pipe and the second ventilation pipe are intersected towards the middle to form an intersection; the upper end of the pipette is communicated with the right lower end of the junction; the trace blood collection tube is arranged below the pipette; the upper end of the micro blood collection tube is inserted and connected into the lower end of the pipette, and the lower end of the micro blood collection tube extends to the lower part of the pipette; the upper end of the micro blood collection tube is communicated with the external air pressure of the pipette.
Further, a cavity with a square cross section is formed in the pipette; the cross section of the outer side of the periphery of the trace blood collection tube is in a circular structure; the outer side of the periphery of the upper end of the micro blood collection tube is connected with the inner wall of the periphery of the cavity of the pipette; a plurality of ventilation gaps are uniformly arranged between the outer sides of the periphery of the micro blood collection tube and the inner wall of the cavity of the pipette.
Further, the periphery of the upper end of the micro blood collection tube is in closed connection with the inside of the lower end of the pipette; a vent is formed in one side below the pipette; the air vent is connected with an air nozzle pipe in a downward extending mode; the lower end face of the air tap tube is positioned above the lower end face of the micro blood sampling tube; the air vent is positioned above the upper end face of the micro blood collection tube.
Further, the upper air bag, the lower air bag, the first ventilation pipe and the second ventilation pipe are connected through plastic parts in a solidifying mode.
Further, the lower ends of the first ventilation pipe and the second ventilation pipe are respectively provided with an inclined pipe body; the inclined pipe body is inclined towards the middle to be intersected and form a conical structure with a large upper part and a small lower part.
Further, the lower ends of the first ventilation pipe and the second ventilation pipe are respectively provided with a horizontal pipe body; the horizontal pipe body horizontally extends towards the middle to form a junction.
Further, the pipette is a glass tube.
Further, the pipette is a plastic tube.
A blood sampling and pipetting method of an single quantitative blood sampling pipette comprises the following steps: s1, blood sampling: the lower end of a trace blood collection tube below the pipette is contacted with blood to be collected, the blood is sucked by capillary action of the trace blood collection tube until the whole trace blood collection tube is filled, and then the blood in the trace blood collection tube is extruded and discharged into diluent by pressing an upper air bag or a lower air bag; s2, pressing a lower air bag: firstly, pressing a lower air bag, then, contacting the lower end of the pipette with diluent to be sucked, loosening the lower air bag, sucking the liquid from the lower end of the pipette and filling the whole pipette, and sucking the liquid into a second vent pipe through a junction; s3, pressing an upper air bag: pressing the upper air bag, extruding and discharging liquid in the whole pipette and part of liquid at the junction through air pressure in the upper air bag, so as to realize pipetting; s4, discharging and collecting residual liquid: the lower bladder is again squeezed so that the liquid in the second vent tube and another portion of the liquid at the junction are expelled from the lower end of the pipette and collected.
A blood sampling and pipetting method of an single quantitative blood sampling pipette comprises the following steps: s1, blood sampling: the lower end of a trace blood collection tube below the pipette is contacted with blood to be collected, the blood is sucked by capillary action of the trace blood collection tube until the whole trace blood collection tube is filled, and then the blood in the trace blood collection tube is extruded and discharged into diluent by pressing an upper air bag or a lower air bag; s2, pressing an upper air bag: firstly, pressing an upper air bag, then, contacting the lower end of the pipette with diluent to be sucked, loosening the upper air bag, sucking the liquid from the lower end of the pipette and filling the whole pipette, and sucking the liquid into a first vent pipe through a junction; s3, pressing a lower air bag: pressing the lower air bag, extruding and discharging the liquid in the whole pipette and part of liquid at the junction through the air pressure in the lower air bag, so as to realize the purpose of pipetting; s4, discharging and collecting residual liquid: the upper bladder is again squeezed so that the liquid in the first vent tube and another portion of the liquid at the junction are expelled from the lower end of the pipette and collected.
The beneficial effects of the invention are that
1. The invention realizes the function of collecting blood by installing the trace blood collecting tube below the pipette and collecting blood by the capillary principle of the trace blood collecting tube, and designs the ventilation position of the upper end of the trace blood collecting tube between the outer side of the periphery of the trace blood collecting tube and the inner wall of the cavity of the pipette or designs the ventilation position of the upper end of the trace blood collecting tube on the side wall of one side of the pipette, so that a through hole is not required to be formed on the trace blood collecting tube, and the defects of poor yield and high process difficulty of forming the through hole on the trace blood collecting tube are avoided.
2. The invention has the advantages that the liquid is sucked and discharged through the cooperation of the upper air bag and the lower air bag, the lower end of the upper air bag and the upper end of the lower air bag are sealed, the lower ends of the upper air bag and the lower air bag are respectively connected to the upper end of a pipette through the first ventilation pipe and the second ventilation pipe in a crossing way, so that the paths of sucking liquid by the two air bags are not interfered with each other, one air bag can suck liquid, the other air bag quantitatively discharges liquid, and after the liquid is discharged, the excessive liquid sample is extruded and discharged through the air bag which sucks the liquid originally, so that waste is avoided.
Drawings
Fig. 1 is a schematic diagram of a prior art structure.
Fig. 2 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
FIG. 4 is a schematic diagram showing the front view of the micropipette and pipette of embodiment 1 of the present invention.
FIG. 5 is a schematic cross-sectional view of a micropipette and pipette according to embodiment 1 of the present invention.
FIG. 6 is a schematic diagram showing the front view of the micropipette and pipette of embodiment 2 of the present invention.
Description of the embodiments
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
As shown in fig. 2, 4 and 5, an apheresis pipette comprises an upper air bag 1, a lower air bag 2, a first ventilation pipe 5, a second ventilation pipe 6, a pipette 4 and a micro blood collection tube 9; the upper end of the upper air bag 1 is closed, and an upper opening 11 is arranged at one side of the lower end of the upper air bag 1; the lower air bag 2 is positioned below the upper air bag 1; the upper end of the lower air bag 2 is closed, and one side of the lower end of the lower air bag 2 is provided with a lower opening 21; the upper end of the first vent pipe 5 is communicated and connected to an upper opening 11 at one side of the lower end of the upper air bag 1; the upper end of the second vent pipe 6 is communicated and connected to a lower opening 21 at one side of the lower end of the lower air bag 2; the pipette 4 is arranged below the first ventilation pipe 5 and the second ventilation pipe 6; the first ventilation pipe 5 and the second ventilation pipe 6 are respectively positioned at two sides above the pipette 4; the lower ends of the first ventilation pipe 5 and the second ventilation pipe 6 are intersected towards the middle to form an intersection 56; the upper end of the pipette 4 is connected in communication with the lower end of the junction 56. The micro blood collection tube 9 is arranged below the pipette 4; the upper end of the micro blood collection tube 9 is inserted and connected into the lower end of the pipette 4, and the lower end of the micro blood collection tube 9 extends to the lower part of the pipette 4; the upper end of the micro blood collection tube 9 is communicated with the external air pressure of the pipette 4. Further preferably, a cavity with a square cross section is arranged inside the pipette 4; the cross section of the outer sides of the periphery of the trace blood collection tube 9 is in a circular structure; the outer side of the periphery of the upper end of the micro blood collection tube 9 is connected with the inner wall of the periphery of the cavity of the pipette 4; a plurality of ventilation gaps 41 are uniformly formed between the outer sides of the periphery of the micro blood collection tube 9 and the inner wall of the cavity of the pipette 4, so that the ventilation is performed between the outer sides of the periphery of the micro blood collection tube 9 and the inner wall of the cavity of the pipette 4 and the outside through the ventilation gaps 41, and the micro blood collection tube 9 can collect blood by utilizing the capillary principle. Further preferably, the upper airbag 1, the lower airbag 2, the first vent pipe 5 and the second vent pipe 6 are connected by curing the plastic member 3. Further, the lower ends of the first ventilation pipe 5 and the second ventilation pipe 6 are respectively provided with an inclined pipe body 7; the inclined pipe body 7 is inclined towards the middle to meet and form a conical structure with a large upper part and a small lower part. Further, the pipette 4 is a glass tube or a plastic tube. The interior of the pipette is generally a circular cavity structure, with the pipette volume being determined by its inside diameter and length.
Example 2
In this embodiment, referring to embodiment 1, the difference is that the intersection mode of the first ventilation tube 5 and the second ventilation tube 6 and the ventilation structure of the micro blood collection tube 9 are shown in fig. 3 and 6, and the lower ends of the first ventilation tube 5 and the second ventilation tube 6 are respectively provided with a horizontal tube body 8; the horizontal tubes 8 extend horizontally toward the middle to meet to form a junction 56. The periphery of the upper end of the micro blood collection tube 9 is in closed connection with the inside of the lower end of the pipette 4; a vent 43 is formed in one side below the pipette 4; the air vent 43 is connected with an air tap pipe 42 in a downward extending way; the lower end face of the air tap tube 42 is positioned above the lower end face of the micro blood sampling tube 9; the air vent 43 is positioned above the upper end face of the micro blood collection tube 9. In this embodiment, the upper end of the micro blood collection tube 9 is vented to the outside through the vent 43 on the side of the pipette 4.
The present invention is directed to the following two pipetting methods for the upper balloon 1 and the lower balloon 2.
First kind: as shown in fig. 2 to 6, the steps are as follows: s1, blood sampling: the lower end of the micro blood collection tube 9 below the pipette 4 is contacted with blood to be collected, the blood is sucked by the capillary action of the micro blood collection tube 9 until the whole micro blood collection tube 9 is filled, and then the blood in the micro blood collection tube 9 is extruded and discharged into a diluent by pressing the upper air bag 1 or the lower air bag 2; s2, pressing a lower air bag: firstly, the lower air bag 2 is pressed, then the lower end of the pipette 4 is contacted with the diluent to be sucked, the lower air bag 2 is loosened, the whole pipette 4 is sucked from the lower end of the pipette 4 and filled with the diluent, and the diluent is sucked into the second vent pipe 6 through the junction 56; s3, pressing an upper air bag: pressing the upper air bag 1, and extruding and discharging the liquid in the whole pipette 4 and part of liquid at the junction 56 by the air pressure in the upper air bag 1; s4, discharging and collecting residual liquid: the lower bladder 2 is again squeezed so that the liquid in the second vent tube 6 and another part of the liquid at junction 56 is expelled from the lower end of the pipette 4 and collected.
Second kind: as shown in fig. 2 to 6, the steps are as follows: s1, blood sampling: the lower end of the micro blood collection tube 9 below the pipette 4 is contacted with blood to be collected, the blood is sucked by the capillary action of the micro blood collection tube 9 until the whole micro blood collection tube 9 is filled, and then the blood in the micro blood collection tube 9 is extruded and discharged into a diluent by pressing the upper air bag 1 or the lower air bag 2; s2, pressing an upper air bag: the upper bladder 1 is first pressed and then the lower end of the pipette 4 is brought into contact with the diluent to be sucked, the upper bladder 1 is released, the liquid is sucked from the lower end of the pipette 4 and fills the whole pipette 4, and the liquid is sucked into the first vent pipe 5 through the junction 56; s3, pressing a lower air bag: pressing the lower air bag 2, extruding and discharging the liquid in the whole pipette 4 and part of liquid at the junction 56 by the air pressure in the lower air bag 2, so as to realize the purpose of pipetting; s4, discharging and collecting residual liquid: the upper bladder 1 is again squeezed so that the liquid in the first vent tube 5 and another part of the liquid at the junction 56 is expelled from the lower end of the pipette 4 and collected.
The invention realizes the function of collecting blood by arranging the trace blood collection tube 9 below the pipette 4 and collecting blood by the capillary principle of the trace blood collection tube 9, and designs the ventilation position at the upper end of the trace blood collection tube 9 between the outer side of the periphery of the trace blood collection tube 9 and the inner wall of the cavity of the pipette 4 or designs the ventilation position at the upper end of the trace blood collection tube 9 on the side wall of one side of the pipette 4, so that a through hole is not required to be formed in the trace blood collection tube 9, and the defects of poor yield and high process difficulty of forming the through hole in the trace blood collection tube 9 are avoided.
The invention sucks and discharges the liquid through the cooperation of the two air bags of the upper air bag 1 and the lower air bag 2, the lower end of the upper air bag 1 and the upper end of the lower air bag 2 are sealed, the lower ends of the upper air bag 1 and the lower air bag 2 are respectively connected with the upper end of the pipette 4 through the first ventilation pipe 5 and the second ventilation pipe 6 in a crossing way, thus the paths of sucking the liquid by the two air bags are not interfered with each other, one air bag can suck the liquid, the other air bag quantitatively discharges the liquid, and after the liquid is discharged, the excess liquid sample is extruded and discharged through the air bag which sucks the liquid originally to recycle, thereby avoiding waste.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. An mono-quantitative blood collection pipette is characterized by comprising an upper air bag, a lower air bag, a first vent pipe, a second vent pipe, a pipette and a micro-blood collection tube; the upper end of the upper air bag is closed, and one side of the lower end of the upper air bag is provided with an upper opening; the lower air bag is positioned below the upper air bag; the upper end of the lower air bag is closed, and one side of the lower end of the lower air bag is provided with a lower opening; the upper end of the first vent pipe is communicated and connected to an upper opening at one side of the lower end of the upper air bag; the upper end of the second vent pipe is communicated and connected to a lower opening at one side of the lower end of the lower air bag; the pipette is arranged below the first ventilation pipe and the second ventilation pipe; the first vent pipe and the second vent pipe are respectively positioned at two sides above the pipette; the lower ends of the first ventilation pipe and the second ventilation pipe are intersected towards the middle to form an intersection; the upper end of the pipette is communicated with the right lower end of the junction; the trace blood collection tube is arranged below the pipette; the upper end of the micro blood collection tube is inserted and connected into the lower end of the pipette, and the lower end of the micro blood collection tube extends to the lower part of the pipette; the upper end of the micro blood collection tube is communicated with the external air pressure of the pipette.
2. The apheresis pipette of claim 1, wherein the interior of the pipette is provided with a cavity having a square cross-section; the cross section of the outer side of the periphery of the trace blood collection tube is in a circular structure; the outer side of the periphery of the upper end of the micro blood collection tube is connected with the inner wall of the periphery of the cavity of the pipette; a plurality of ventilation gaps are uniformly arranged between the outer sides of the periphery of the micro blood collection tube and the inner wall of the cavity of the pipette.
3. The apheresis pipette of claim 1, wherein the peripheral of the upper end of the micropositioned blood collection tube is in a closed connection with the interior of the lower end of the pipette; a vent is formed in one side below the pipette; the air vent is connected with an air nozzle pipe in a downward extending mode; the lower end face of the air tap tube is positioned above the lower end face of the micro blood sampling tube; the air vent is positioned above the upper end face of the micro blood collection tube.
4. The apheresis pipette of claim 1, wherein the upper bladder, lower bladder, first vent tube, second vent tube are fixedly connected by a plastic piece.
5. The single dose blood collection pipette of claim 1, wherein the lower ends of the first vent tube and the second vent tube are respectively provided with an inclined tube body; the inclined pipe body is inclined towards the middle to be intersected and form a conical structure with a large upper part and a small lower part.
6. The single dose blood collection pipette of claim 1, wherein a horizontal tube is provided at the lower end of each of the first vent tube and the second vent tube; the horizontal pipe body horizontally extends towards the middle to form a junction.
7. The apheresis pipette of claim 1, wherein the pipette is a glass tube.
8. The apheresis pipette of claim 1, wherein the pipette is a plastic tube.
9. A blood collection pipetting method of an apheresis pipette according to claim 1 comprising the steps of: s1, blood sampling: the lower end of a trace blood collection tube below the pipette is contacted with blood to be collected, the blood is sucked by capillary action of the trace blood collection tube until the whole trace blood collection tube is filled, and then the blood in the trace blood collection tube is extruded and discharged into diluent by pressing an upper air bag or a lower air bag; s2, pressing a lower air bag: firstly, pressing a lower air bag, then, contacting the lower end of the pipette with diluent to be sucked, loosening the lower air bag, sucking the liquid from the lower end of the pipette and filling the whole pipette, and sucking the liquid into a second vent pipe through a junction; s3, pressing an upper air bag: pressing the upper air bag, extruding and discharging liquid in the whole pipette and part of liquid at the junction through air pressure in the upper air bag, so as to realize pipetting; s4, discharging and collecting residual liquid: the lower bladder is again squeezed so that the liquid in the second vent tube and another portion of the liquid at the junction are expelled from the lower end of the pipette and collected.
10. A blood collection pipetting method of an apheresis pipette according to claim 1 comprising the steps of: s1, blood sampling: the lower end of a trace blood collection tube below the pipette is contacted with blood to be collected, the blood is sucked by capillary action of the trace blood collection tube until the whole trace blood collection tube is filled, and then the blood in the trace blood collection tube is extruded and discharged into diluent by pressing an upper air bag or a lower air bag; s2, pressing an upper air bag: firstly, pressing an upper air bag, then, contacting the lower end of the pipette with diluent to be sucked, loosening the upper air bag, sucking the liquid from the lower end of the pipette and filling the whole pipette, and sucking the liquid into a first vent pipe through a junction; s3, pressing a lower air bag: pressing the lower air bag, extruding and discharging the liquid in the whole pipette and part of liquid at the junction through the air pressure in the lower air bag, so as to realize the purpose of pipetting; s4, discharging and collecting residual liquid: the upper bladder is again squeezed so that the liquid in the first vent tube and another portion of the liquid at the junction are expelled from the lower end of the pipette and collected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010853156.XA CN111774114B (en) | 2020-08-22 | 2020-08-22 | Single quantitative blood sampling pipette and blood sampling pipetting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010853156.XA CN111774114B (en) | 2020-08-22 | 2020-08-22 | Single quantitative blood sampling pipette and blood sampling pipetting method thereof |
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| CN111774114B true CN111774114B (en) | 2023-07-21 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08117341A (en) * | 1994-10-28 | 1996-05-14 | Toyoda Gosei Co Ltd | Flow guide catheter |
| CN1178907A (en) * | 1996-03-27 | 1998-04-15 | 三浦工业株式会社 | Liquid discharging device |
| CN202290070U (en) * | 2011-07-12 | 2012-07-04 | 山东科技大学 | Novel micro-controllable ear washing bulb |
| CN104826679A (en) * | 2014-11-09 | 2015-08-12 | 韦伟 | Pipette tip and pipette therewith |
| CN205020105U (en) * | 2015-09-17 | 2016-02-10 | 陕西科技大学 | Pasteur pipet |
| CN212348776U (en) * | 2020-08-22 | 2021-01-15 | 江苏科华医疗器械科技有限公司 | Double-airbag extrusion type single-quantitative blood sampling pipette |
-
2020
- 2020-08-22 CN CN202010853156.XA patent/CN111774114B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08117341A (en) * | 1994-10-28 | 1996-05-14 | Toyoda Gosei Co Ltd | Flow guide catheter |
| CN1178907A (en) * | 1996-03-27 | 1998-04-15 | 三浦工业株式会社 | Liquid discharging device |
| CN202290070U (en) * | 2011-07-12 | 2012-07-04 | 山东科技大学 | Novel micro-controllable ear washing bulb |
| CN104826679A (en) * | 2014-11-09 | 2015-08-12 | 韦伟 | Pipette tip and pipette therewith |
| CN205020105U (en) * | 2015-09-17 | 2016-02-10 | 陕西科技大学 | Pasteur pipet |
| CN212348776U (en) * | 2020-08-22 | 2021-01-15 | 江苏科华医疗器械科技有限公司 | Double-airbag extrusion type single-quantitative blood sampling pipette |
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| CN111774114A (en) | 2020-10-16 |
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