CN109321443B - Liquid transfer device for expectoration collection - Google Patents
Liquid transfer device for expectoration collection Download PDFInfo
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- CN109321443B CN109321443B CN201811271678.8A CN201811271678A CN109321443B CN 109321443 B CN109321443 B CN 109321443B CN 201811271678 A CN201811271678 A CN 201811271678A CN 109321443 B CN109321443 B CN 109321443B
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- annular
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- cavity
- elastic sheet
- liquid
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
- C12M33/04—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus by injection or suction, e.g. using pipettes, syringes, needles
- C12M33/07—Dosage or metering devices therefore
Abstract
The invention relates to the technical field of medical instruments, in particular to a liquid transfer device for expectoration collection, which comprises a gun body and a gun head, wherein the gun head and the gun body are detachably connected through matching of an annular bulge and an annular groove, the gun head is provided with a liquid cavity, the bottom of the gun head is provided with a first elastic sheet which is communicated in a one-way manner, the liquid cavity is provided with a side hole, the opening part of the side hole is provided with a second elastic sheet which is communicated in a one-way manner, the liquid cavity is also provided with a first through hole which is positioned below the liquid level of liquid in the liquid cavity, the opening part of the first through hole is provided with a third elastic sheet which is communicated in a one-way manner, the gun body is provided with a cavity communicated with the liquid cavity, the cavity is connected with a slide block in a sliding manner, the gun body is also provided with an annular air cavity communicated with the first through hole, the annular air cavity is connected with an, the fluid infusion is performed, and the sputum specimen is discharged once.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a liquid transfer device for expectoration collection.
Background
The clinical manifestation of tuberculosis is related to the number and toxicity of infected tubercle bacillus, the immune response and allergic reaction state of organism, the sputum test finds out the tubercle bacillus or the positive sputum culture, and the fiber bronchoscopy finds out that the tuberculous is the reliable basis for diagnosing the tuberculosis. When sputum is detected for a pulmonary tuberculosis patient, in order to avoid direct contact to cause disease infection, inspection personnel need to move a sputum specimen through a liquid transfer device to perform related inspection operations.
The prior liquid-transfering device comprises a gun body and a gun head, wherein the gun body can be used for multiple times, is not contacted with a sputum sample in the using process, and avoids polluting the next sputum sample; the rifle head is disposable to install on the rifle body in detachable mode, and the leakproofness is good between rifle head and the rifle body, avoids moving the liquid in-process and takes place the hourglass phenomenon.
The current liquid-transfering device for phlegm is examined makes the rifle head inhale the phlegm sample through pressing the button on the rifle body, and the dose of inhaling the phlegm sample is fixed, if the dose of once absorbing is not enough, need discharge the phlegm sample earlier in the rifle head, absorbs the second time phlegm sample again, and operation process is troublesome, can not absorb the phlegm sample of sufficient dose to once discharge.
Secondly, the sputum samples sucked for many times are sucked from different positions, although the sputum samples are the same sputum sample, differences exist among different positions to influence the detection result, if the sputum samples are mixed by a detector, the sputum samples can drip or generate aerosol in the mixing process to pollute the detection environment and the detector, the risk of spreading diseases exists, and meanwhile, the sputum samples are exposed in the air for too long time and can be polluted by other substances to influence the detection result.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a liquid transfer device for sputum collection, which can perform liquid infusion and discharge a sputum sample at one time under the condition that the sputum sample is not collected enough at one time.
The basic scheme provided by the invention is as follows: the liquid transfer device for expectoration collection comprises a gun body and a gun head, wherein a liquid cavity is arranged in the gun head and used for storing liquid sucked from the bottom of the gun head, a first elastic sheet is arranged at the bottom of the gun head and used for controlling one-way conduction of the liquid cavity, a side hole is formed in the bottom of the gun head and used for communicating the outside with the liquid cavity, a second elastic sheet is arranged at the opening part of the side hole in the liquid cavity and used for controlling one-way conduction of the side hole, a first through hole is further formed in the liquid cavity, a third elastic sheet is arranged at the opening part of the first through hole in the liquid cavity and used for controlling one-way conduction of the first through hole;
the gun body is provided with a second through hole used for communicating the liquid cavity, a sliding block is connected in the second through hole in a sliding manner, one end of the sliding block is provided with an elastic part, the other end of the sliding block is provided with a first push rod capable of extending out of the second through hole, a cavity is arranged between the sliding block and the liquid cavity, and an annular clamping block abutting against the elastic part is arranged in the cavity;
the gun body is also provided with an annular blind hole with a smooth inner wall, an annular sliding block with a smooth circumferential surface is connected in the annular blind hole in a sliding manner, a second push rod capable of extending out of the annular blind hole is arranged on the annular sliding block, an annular air cavity is arranged between the annular sliding block and the bottom of the annular blind hole, and a third through hole used for communicating the first through hole is formed in the bottom of the annular air cavity;
the gun body is also provided with a fourth through hole which is used for communicating the annular air cavity and the cavity, a fourth elastic sheet is arranged at the mouth part of the annular air cavity of the fourth through hole and used for controlling the one-way conduction of the fourth through hole; the hardness of the second elastic sheet is less than that of the third elastic sheet, and the hardness of the fourth elastic sheet is less than that of the first elastic sheet.
The principle and the advantages of the invention are as follows: because the second through hole is internally and slidably connected with a sliding block, a cavity is arranged between the sliding block and the liquid cavity, the first push rod is pushed to enable the sliding block to slide downwards, gas in the cavity is compressed, the gas in the cavity extrudes the fourth elastic sheet and the first elastic sheet, the fourth elastic sheet is firstly opened because the hardness of the fourth elastic sheet is less than that of the first elastic sheet, so that the fourth through hole is conducted in a single direction, the gas enters the annular gas cavity, the inner wall of the annular blind hole is smooth, the peripheral surface of the annular sliding block is smooth, the annular sliding block slides upwards in the annular blind hole under the pushing of the gas until the sliding block cannot move downwards, the bottom of the gun head is placed in a sputum specimen, the first push rod is slowly loosened, the sliding block slides upwards under the action of the elastic piece, negative pressure is generated in the communicated cavity and the liquid cavity, and the second elastic sheet is firstly opened because the hardness of the second elastic sheet is, inhale and get phlegm sample to the sap cavity in, if the dose of once inhaling the phlegm sample is not enough, shift out the bottom of rifle head from the phlegm sample, the operation of repeated above-mentioned sputum sample of inhaling, carry out the fluid infusion to the phlegm sample, with the phlegm sample storage in the sap cavity, until gathering sufficient phlegm sample, promote first push rod and second push rod simultaneously again, make the gaseous of cavity and annular air cavity all compressed, gaseous extrusion third shell fragment in the annular air cavity, make third through-hole one-way conduction, gaseous entering sap cavity in the annular air cavity, with the gaseous first shell fragment of common extrusion in the cavity, make the sap cavity one-way conduction, the phlegm sample of sap cavity can be followed the bottom of rifle head and once discharged, can be once gathering under the not enough condition at the phlegm sample through the operation of repeatedly inhaling the phlegm sample, carry out the fluid infusion, can once discharge the phlegm sample through first push rod and second push rod.
Further, the top of the gun head is provided with an annular bulge clamped with the gun body, the annular bulge is made of flexible materials, the top of the gun head is provided with a first groove, and the first groove is located at one end of the liquid cavity; the bottom of the gun body is provided with an annular groove, and the bottom of the annular groove is provided with an annular groove matched with the annular protrusion for use.
Because the top of rifle head is equipped with the annular bulge with the rifle body block, the annular groove that uses with the cooperation of annular bulge is seted up to the bottom of annular groove, in the use, align the top of rifle head with the bottom of the rifle body, and the extrusion, make annular bulge card go into in the annular groove, when dismantling, outwards extract the rifle head, because the annular bulge adopts flexible material to make, annular bulge can throw off with the annular groove, thereby make rifle head and rifle body throw off, realize the purpose of dismantling the rifle head, through changing the rifle head, in order to avoid the infection of disease.
Furthermore, a second groove is formed in the side wall of the gun body, the side wall of the second groove is communicated with the annular groove, a wedge block capable of extending out of the second groove is connected in the second groove in a sliding mode, the inclined surface of the wedge block is abutted to the annular protrusion, and the wedge block is used for enabling the annular protrusion to be disengaged from the annular groove.
Because sliding connection has the wedge that can stretch out the second recess in the second recess, to the bottom promotion wedge of second recess, the wedge slides in the second recess, because the inclined plane and the annular bulge of wedge offset, the wedge slides in-process and makes annular bulge and annular groove throw off, makes rifle head and rifle body throw off through promoting the wedge, easily operation, the rifle head is changed conveniently.
Furthermore, the one end that the slider was kept away from to first push rod is equipped with first briquetting, and the one end that the annular slider was kept away from to the second push rod is equipped with the second briquetting, and the second briquetting offsets with the top of the rifle body, and the one end that the wedge stretches out the second recess is equipped with the third briquetting.
The arrangement of the first pressing block, the second pressing block and the third pressing block facilitates the exertion of force by fingers and the operation is convenient; because the second briquetting offsets with the top of the rifle body, the second briquetting can prevent that annular slider from dropping to the dose of the phlegm sample of the intracavity storage of liquid just can be known to the height that rises through the second briquetting.
Furthermore, a reset piece is arranged between the third pressing block and the side wall of the gun body.
Through pressing the third briquetting, make rifle head and rifle body throw off, reach the purpose of dismantling the rifle head, the piece that resets makes the third briquetting reset, is convenient for dismantle a rifle head down.
Further, the first through hole is positioned below the liquid level of the liquid in the liquid cavity.
When discharge phlegm sample, the gaseous entering liquid chamber that can pass through third through-hole and first through-hole of annular gas intracavity, because first through-hole is located below the liquid level of liquid intracavity liquid, gaseous back that gets into for the phlegm sample of liquid intracavity can the misce bene.
Furthermore, the gun body is provided with scale marks.
The dosage of the sputum specimen sucked in the liquid cavity can be known through the scale marks, so that the inspection operation is convenient.
Drawings
Fig. 1 is a sectional view of an embodiment of a pipetting device for expectoration collection according to the present invention.
Fig. 2 is a sectional view of a pipette tip of an embodiment of the pipetting device for expectoration collection of the present invention.
Fig. 3 is an enlarged schematic view of part a of fig. 2 of the pipetting device for expectoration collection according to the present invention.
Fig. 4 is a sectional view of a gun body of an embodiment of the pipette device for collecting expectoration of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the gun comprises a gun body 1, a gun head 2, an annular protrusion 3, a first groove 4, a liquid cavity 5, a first elastic sheet 501, a second elastic sheet 502, a third elastic sheet 503, a side hole 504, a first through hole 505, a second through hole 6, a first pressing block 601, a sliding block 602, a cavity 603, an annular clamping block 604, an annular blind hole 7, an annular sliding block 701, a second pressing block 702, an annular air cavity 703, a third through hole 704, a fourth through hole 8, a fourth elastic sheet 804, an annular groove 9, a second groove 10, a wedge block 101 and a third pressing block 103.
Examples
As shown in the attached drawing 1, the liquid transfer device for expectoration collection comprises a gun body 1 and a gun head 2, as shown in the attached drawing 2, the top of the gun head 2 is provided with an annular bulge 3 clamped with the gun body 1, and the annular bulge 3 is made of flexible materials; the top of the gun head 2 is provided with a first groove 4, and the opening of the first groove 4 faces to the top vertical to the gun head 2; a liquid cavity 5 is formed at the bottom of the first groove 4, the liquid cavity 5 is used for storing a sputum sample sucked from the bottom of the gun head 2, as shown in fig. 3, a first elastic sheet 501 is arranged at the bottom of the gun head 2, and the sputum sample can only flow to the outside from the liquid cavity 5 by the first elastic sheet 501; a side hole 504 is formed in the bottom of the gun head 2, a second elastic sheet 502 is arranged at the opening part of the side hole 504 in the liquid cavity 5, and the sputum specimen can only flow into the liquid cavity 5 from the outside through the second elastic sheet 502; the liquid cavity 5 is further provided with a first through hole 505, the first through hole 505 is positioned below the liquid level of the sputum specimen in the liquid cavity 5, and a third elastic sheet 503 for enabling gas to flow into the liquid cavity 5 from the third through hole 704 is arranged at the opening part of the first through hole 505 positioned in the liquid cavity 5.
As shown in fig. 4, the gun body 1 is provided with a second through hole 6 for communicating with the liquid cavity 5, and the second through hole 6 penetrates through the gun body 1 and is located in the axial direction of the gun body 1; a sliding block 602 is slidably connected in the second through hole 6, an elastic member is bonded at one end of the sliding block 602, the elastic member is preferably a tension spring in the embodiment, a first push rod capable of extending out of the second through hole 6 is bonded at the other end of the sliding block 602, and a first pressing block 601 is bonded at one end of the first push rod far away from the sliding block 602; a cavity 603 is arranged between the slide block 602 and the bottom of the gun body 1, and an annular clamping block 604 which is abutted against the elastic element is arranged in the cavity 603.
The gun body 1 is also provided with an annular blind hole 7 with a smooth inner wall, and an annular sliding block 701 with a smooth circumferential surface is slidably connected in the annular blind hole 7; a second push rod capable of extending out of the annular blind hole 7 is bonded on the annular sliding block 701, a second pressing block 702 is bonded at one end of the second push rod far away from the annular sliding block 701, and the second pressing block 702 abuts against the top of the gun body 1; an annular air cavity 703 is formed between the annular slider 701 and the bottom of the annular blind hole 7, and a third through hole 704 for communicating the first through hole 505 is formed in the bottom of the annular air cavity 703; the gun body 1 is further provided with a fourth through hole 8, the fourth through hole 8 is used for communicating the annular air cavity 703 and the cavity 603, a fourth elastic sheet 804 is arranged at the opening part of the fourth through hole 8, which is positioned in the annular air cavity 703, and the fourth elastic sheet 804 enables air to flow into the annular air cavity 703 only from the cavity 603.
The bottom of the gun body 1 is provided with an annular groove, and the bottom of the annular groove is provided with an annular groove 9 matched with the annular bulge 3; a second groove 10 is formed in the side wall of the gun body 1, the second groove 10 penetrates through the annular blind hole 7 and is not communicated with the annular blind hole 7, the side wall of the second groove 10 is communicated with the annular groove, a wedge block 101 capable of extending out of the second groove 10 is connected in the second groove 10 in a sliding mode, the inclined surface of the wedge block 101 abuts against the annular protrusion 3, the wedge block 101 is used for enabling the annular protrusion 3 to be disengaged from the annular groove 9, a third pressing block 103 is bonded to one end, located outside the gun body 1, of the wedge block 101, a reset piece is arranged between the third pressing block 103 and the side wall of the gun body 1, and the reset piece is preferably a tension spring in the embodiment; the gun body 1 is also provided with scale marks.
The hardness of the second elastic sheet 502 is less than that of the third elastic sheet 503, and the second elastic sheet 502 is opened first under the same force; the hardness of the fourth elastic sheet 804 is less than that of the first elastic sheet 501, and the fourth elastic sheet 804 is opened first under the same force.
The specific implementation process is as follows:
before the use, need to install rifle head 2 and rifle body 1, align the bottom of rifle body 1 with the top of rifle head 2 earlier to extrude rifle body 1 and rifle head 2, make annular protrusion 3 block in the annular groove 9, rifle head 2 installs on rifle body 1.
When the gas-liquid separation device is used, the first pressing block 601 is pressed to enable the sliding block 602 to slide downwards in the second through hole 6, the gas in the cavity 603 extrudes the fourth elastic sheet 804, the fourth elastic sheet 804 is conducted in a single direction, and the gas in the cavity 603 flows to the annular gas cavity 703 through the fourth through hole 8; because the inner wall of the annular blind hole 7 is smooth and the circumferential surface of the annular sliding block 701 is smooth, the annular sliding block 701 slides upwards in the annular blind hole 7 under the pushing of gas until the sliding block 602 can not slide downwards any more, and the elastic potential energy of the elastic part reaches the maximum at the moment; the bottom of the gun head 2 is placed in a sputum specimen, the first pressing block 601 is slowly loosened, the sliding block 602 slides upwards under the action of the elastic force of the elastic piece, the communicated cavity 603 and the liquid cavity 5 generate negative pressure, the second elastic piece 502 is conducted in a single direction, the sputum specimen is sucked into the liquid cavity 5 from the side hole 504 of the gun head 2, and the sputum specimen is collected.
If the amount of the collected sputum specimen is not enough, the first pressing block 601 is pressed again, because the hardness of the fourth elastic sheet 804 is smaller than that of the first elastic sheet 501, the fourth elastic sheet 804 is opened firstly under the same force, the first elastic sheet 501 cannot be opened, then the first pressing block 601 is loosened slowly, and the sputum specimen in the liquid cavity 5 is replenished with liquid until the required inspection amount is reached; if the dosage of the collected sputum specimen is enough, the bottom of the gun head 2 is placed in a culture dish, the first pressing block 601 and the second pressing block 702 are pressed simultaneously, the sliding block 602 slides downwards along the annular sliding block 701, the third elastic sheet 503 is extruded by the gas in the annular air cavity 703, so that the third elastic sheet 503 is conducted in a single direction, the gas in the annular air cavity 703 flows into the liquid cavity 5 through the third through hole 704 and the first through hole 505, the sputum specimen in the liquid cavity 5 is extruded by the gas in the cavity 603, the first elastic sheet 501 is extruded, the first elastic sheet 501 is conducted in a single direction, the sputum specimen in the liquid cavity 5 flows into the culture dish from the bottom of the gun head 2, and the sputum specimen is discharged.
After the utility model is used, need to change rifle head 2, press third briquetting 103, make wedge 101 slide in second recess 10, because the inclined plane of wedge 101 offsets with annular protrusion 3, and annular protrusion 3 adopts flexible material to make, wedge 101 makes annular protrusion 3 and annular recess 9 throw off, thereby make rifle head 2 and the separation of the rifle body 1, under the effect of piece that resets, third briquetting 103 resets, when needs use next time, take new rifle head 2 to install on the rifle body 1, carry out the collection of phlegm sample.
The foregoing are merely exemplary embodiments of the present invention, and no attempt is made to show structural details of the invention in more detail than is necessary for the fundamental understanding of the art, the description taken with the drawings making apparent to those skilled in the art how the several forms of the invention may be embodied in practice with the teachings of the invention. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. A liquid-transfering device for expectoration collection, including the rifle body and rifle head, be equipped with the sap cavity in the rifle head, the sap cavity is used for the storage to follow the liquid of rifle head bottom absorption, its characterized in that: the bottom of the gun head is provided with a first elastic sheet, the first elastic sheet is used for controlling unidirectional conduction of the liquid cavity to the outside, the bottom of the gun head is provided with a side hole, the side hole is used for communicating the outside and the liquid cavity, a second elastic sheet is arranged at an opening part of the side hole, which is positioned in the liquid cavity, the second elastic sheet is used for controlling unidirectional conduction of the side hole to the liquid cavity, the liquid cavity is also provided with a first through hole, the first through hole is positioned below the liquid level of liquid in the liquid cavity, a third elastic sheet is arranged at the opening part of the first through hole, and the third elastic sheet is used for controlling unidirectional conduction of the first through hole to the liquid cavity;
the gun body is provided with a second through hole used for communicating the liquid cavity, a sliding block is connected in the second through hole in a sliding mode, one end of the sliding block is provided with an elastic part, the other end of the sliding block is provided with a first push rod capable of extending out of the second through hole, a cavity is formed between the sliding block and the liquid cavity, and an annular clamping block abutting against the elastic part is arranged in the cavity;
the gun body is also provided with an annular blind hole with a smooth inner wall, an annular sliding block with a smooth circumferential surface is connected in the annular blind hole in a sliding manner, a second push rod capable of extending out of the annular blind hole is arranged on the annular sliding block, an annular air cavity is arranged between the annular sliding block and the bottom of the annular blind hole, and a third through hole used for communicating the first through hole is formed in the bottom of the annular air cavity;
the gun body is also provided with a fourth through hole, the fourth through hole is used for communicating the annular air cavity and the cavity, a fourth elastic sheet is arranged at the mouth part of the annular air cavity of the fourth through hole, and the fourth elastic sheet is used for controlling the one-way conduction of the fourth through hole to the annular air cavity; the hardness of the second elastic sheet is smaller than that of the third elastic sheet, and the hardness of the fourth elastic sheet is smaller than that of the first elastic sheet.
2. The pipette device for expectoration collection according to claim 1, characterized in that: the top of the gun head is provided with an annular bulge clamped with the gun body, the annular bulge is made of flexible materials, the top of the gun head is provided with a first groove, and the first groove is positioned at one end of the liquid cavity; the bottom of the gun body is provided with an annular groove, and the bottom of the annular groove is provided with an annular groove matched with the annular protrusion for use.
3. The pipette device for expectoration collection according to claim 2, characterized in that: the utility model discloses a rifle body, including the rifle body, the rifle body is equipped with the annular groove, set up the second recess on the lateral wall of the rifle body, the lateral wall intercommunication annular groove of second recess, sliding connection has the wedge that can stretch out the second recess in the second recess, the inclined plane and the annular of wedge are protruding to offset, the wedge is used for making annular protruding and annular groove throw off.
4. A pipette device for sputum collection according to claim 3, characterized in that: the one end that the slider was kept away from to first push rod is equipped with first briquetting, the one end that the annular slider was kept away from to the second push rod is equipped with the second briquetting, the second briquetting offsets with the top of the rifle body, the one end that the wedge stretches out the second recess is equipped with the third briquetting.
5. The pipette device for expectoration collection according to claim 4, characterized in that: and a reset piece is arranged between the third pressing block and the side wall of the gun body.
6. The pipette device for expectoration collection according to claim 1, characterized in that: the gun body is provided with scale marks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811271678.8A CN109321443B (en) | 2018-10-29 | 2018-10-29 | Liquid transfer device for expectoration collection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811271678.8A CN109321443B (en) | 2018-10-29 | 2018-10-29 | Liquid transfer device for expectoration collection |
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| Publication Number | Publication Date |
|---|---|
| CN109321443A CN109321443A (en) | 2019-02-12 |
| CN109321443B true CN109321443B (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811271678.8A Active CN109321443B (en) | 2018-10-29 | 2018-10-29 | Liquid transfer device for expectoration collection |
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| CN (1) | CN109321443B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3933048A (en) * | 1974-02-12 | 1976-01-20 | Medical Laboratory Automation, Inc. | Pipettes |
| US4164870A (en) * | 1978-04-10 | 1979-08-21 | Medical Laboratory Automation, Inc. | Pipettes |
| CN203329751U (en) * | 2013-06-07 | 2013-12-11 | 顾艳宏 | Rapid box-feeding device for gun head of micropipettor |
| CN106000498A (en) * | 2016-07-29 | 2016-10-12 | 李玉美 | Plastic dropper with built-in movable metal elastic sheet |
| CN205914172U (en) * | 2016-08-10 | 2017-02-01 | 武汉黄鹤楼香精香料有限公司 | Novel liquid -transfering gun |
| CN207204136U (en) * | 2017-08-14 | 2018-04-10 | 遵义医学院附属医院 | A kind of quantitative liquid shifter |
-
2018
- 2018-10-29 CN CN201811271678.8A patent/CN109321443B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3933048A (en) * | 1974-02-12 | 1976-01-20 | Medical Laboratory Automation, Inc. | Pipettes |
| US4164870A (en) * | 1978-04-10 | 1979-08-21 | Medical Laboratory Automation, Inc. | Pipettes |
| CN203329751U (en) * | 2013-06-07 | 2013-12-11 | 顾艳宏 | Rapid box-feeding device for gun head of micropipettor |
| CN106000498A (en) * | 2016-07-29 | 2016-10-12 | 李玉美 | Plastic dropper with built-in movable metal elastic sheet |
| CN205914172U (en) * | 2016-08-10 | 2017-02-01 | 武汉黄鹤楼香精香料有限公司 | Novel liquid -transfering gun |
| CN207204136U (en) * | 2017-08-14 | 2018-04-10 | 遵义医学院附属医院 | A kind of quantitative liquid shifter |
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| CN109321443A (en) | 2019-02-12 |
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