CN111855311A - High-precision sampler for medical experiment - Google Patents
High-precision sampler for medical experiment Download PDFInfo
- Publication number
- CN111855311A CN111855311A CN202010745447.7A CN202010745447A CN111855311A CN 111855311 A CN111855311 A CN 111855311A CN 202010745447 A CN202010745447 A CN 202010745447A CN 111855311 A CN111855311 A CN 111855311A
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- China
- Prior art keywords
- needle
- disc
- tube
- positioning
- outer sleeve
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
Abstract
The invention discloses a high-precision sampler for medical experiments, which comprises an outer sleeve, a pumping column, a needle tube and a handle, wherein a lining tube is arranged between the outer sleeve and the pumping column, the front end of the lining tube is connected to the outer sleeve and is communicated with the needle tube, the pumping column is arranged inside the lining tube in a sliding fit mode, a measuring scale is fixedly connected to the circumferential surface of the pumping column, and metering scales are carved on the measuring scale. The front end of the needle tube is completely immersed in the solution, the needle tube is prevented from being evacuated by mistake in the sampling process, the handle is slowly pulled, the handle is made to drive the pumping column to be attached and slide along the inner wall of the lining tube, after a certain amount of solution is pumped, the scale on the measuring scale is observed, at the moment, no air exists in the lining tube, the distance for the pumping column to move relative to the lining tube can be substituted into a volume formula, the volume for the pumping column to move can be calculated, the obtained volume is the volume for pumping the solution, namely, the volume of the solution in the needle tube and in the lining tube is the volume and the volume of the solution in.
Description
Technical Field
The invention relates to a sampler, in particular to a high-precision sampler for medical experiments.
Background
At present, the sampler with the highest use rate in the medical field is a needle tube sampler, but the volume of the extracted solution cannot be truly reflected by the scales engraved on the outer sleeve of the sampler, because the volume of the solution in the inner lining tube is only measured by the scale, and the solution in the needle tube is not counted, so the measurement accuracy is low. Therefore, a high-precision sampler is needed, which is convenient for users to research and sample.
Disclosure of Invention
The invention aims to provide a high-precision sampler for medical experiments to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a high-precision sampler for medical experiments comprises an outer sleeve, a pumping column, a needle tube and a handle, wherein one end of the pumping column is fixedly connected with the handle, the other end of the pumping column extends into the inner wall of the outer sleeve, the front end of the outer sleeve is also connected with the needle tube through a connecting tube, an inner lining tube is also arranged between the outer sleeve and the pumping column, the front end of the inner lining tube is connected to the outer sleeve and is communicated with the needle tube, the pumping column is arranged inside the inner lining tube in a sliding fit mode, a second sealing ring is further bonded to the circumferential surface of the pumping column, and a first sealing ring is further bonded to the front end of the pumping column; a measuring scale is fixedly connected to the circumferential surface of the pumping column, a gap exists between the measuring scale and the lining pipe, and measuring scales are engraved on the measuring scale; the circumferential surface of the lining pipe is also sleeved with a positioning block matched with the measuring scale.
As a further scheme of the invention: the dipperstick includes front end and rear end, and the front end is close to the locating piece, scale size on the dipperstick increases according to the route from rear end to anterior segment in proper order.
As a still further scheme of the invention: the front end of the outer sleeve is also provided with a scurf sampling mechanism, the scurf sampling mechanism comprises a rotating disc, a moving disc and a clamping rod, the inner side of the rotating disc is connected with a connecting disc in a rolling manner through balls, the connecting disc is fixedly connected to the end face of the outer sleeve, and the number of the balls is multiple; the rotating disc is internally provided with a plurality of clamping grooves, the clamping grooves are clamped with one ends of the clamping rods, the other ends of the clamping rods are fixedly connected to the moving disc, and the number of the clamping rods is multiple; and the end surface of the movable disc is also fixedly connected with a plurality of sampling claws.
As a still further scheme of the invention: each sampling claw is provided with a chip storage groove.
As a still further scheme of the invention: the needle changing mechanism comprises a positioning disc, a needle sleeve, a needle tube and a positioning rod, wherein the middle of the positioning disc is rotatably connected with a chuck; one end of the positioning rod penetrates through a small hole formed in the handle, and the other end of the positioning rod is fixedly connected to the chuck; the periphery of the positioning disk is detachably connected with a plurality of needle sleeves; the needle sleeve is internally provided with a needle tube in a penetrating way.
As a still further scheme of the invention: a plurality of clamping grooves are formed in the end face of the positioning disc and are distributed on the positioning disc at equal angles; and the end surface of the chuck is also fixedly connected with a clamping block.
As a still further scheme of the invention: the cross sections of the positioning disc and the chuck are circular and are arranged concentrically; one end of the clamping block is fixedly connected to the circle center of the chuck, and the other end of the clamping block is clamped in the clamping groove; the needle sleeve, the clamping groove matched with the needle sleeve and the circle center of the chuck are positioned on the same straight line.
Compared with the prior art, the invention has the beneficial effects that:
1. before the use, the handle is pushed, so that the handle pushes the pumping column to perform exhaust motion along the inner wall of the lining pipe, when the front end of the first sealing ring props against the front end of the lining pipe, the front end of the measuring scale just contacts with the positioning block, and at the moment, the coincidence position of the rear end of the measuring scale and the outer edge of the outer sleeve is set to be 0 scale; during the use, in submerging the front end of needle tubing into solution completely, prevent that sample in-process needle tubing mistake evacuation, lead to final measuring result error, slowly pull the handle, make the handle drive to take out the post and do the laminating slip along the inner wall of interior bushing pipe, after extracting a certain amount of solution, look level up the dipperstick, and observe the scale on the dipperstick, this moment because there is not air in the bushing pipe, consequently can be with taking out the relative interior bushing pipe of post removal apart from substituting the volume formula, can calculate the volume that takes out the post and remove, the gained volume is the volume of drawing solution promptly, promptly for in the needle tubing and interior bushing solution volume sum promptly.
2. When the embodiment is applied to blood sampling, the epidermal tissue of a person to be sampled is also required to be sampled, and the design can sample the blood and the epidermal tissue simultaneously, so that the time is saved; when the skin scraping device is used, the movable disc and the rotary disc are pulled open through the clamping action of the clamping rod, then the movable disc is rotated, the movable disc drives the clamping rod, and further drives the rotary disc to rotate, the rotary disc and the connecting disc are in rolling connection through balls, and the connecting disc is fixedly connected to the outer sleeve, so that the rotary disc can rotate relative to the outer sleeve, and further the movable disc can drive the sampling claws to scrape skin scraps on the surface of skin; more specifically, still seted up the chip storage groove in the sampling claw, consequently can further store the dander tissue of scraping off, guarantee the thoroughness of disposable sample.
3. Insert the aperture on the handle with the one end of locating lever, right the locating lever, rotate the positioning disk, make the positioning disk drive the relative chuck rotation of needle cover, and fixture block and chuck fixed connection, consequently work as when the fixture block rotates and blocks and establishes on the draw-in groove of seting up on the positioning disk, can be corresponding rotate the needle cover to insert the position of establishing the connecting pipe of needle tubing on, because needle cover and positioning disk can dismantle the connection again, consequently can drive the needle tubing through the needle cover, directly insert the needle tubing in the connecting pipe, when needs trade the needle, repeat above-mentioned operation can.
Drawings
Fig. 1 is a schematic structural diagram of a high-precision sampler for medical experiments.
Fig. 2 is a schematic view of the installation of a measuring ruler in a high-precision sampler for medical experiments.
Fig. 3 is a schematic structural diagram of a dandruff sampling mechanism in a high-precision sampler for medical experiments.
Fig. 4 is a schematic structural diagram of a rotary disk and a connecting disk in a medical experiment high-precision sampler.
Fig. 5 is a schematic structural diagram of a needle changing mechanism in a high-precision sampler for medical experiments.
Fig. 6 is a schematic structural diagram of a positioning plate and a chuck in a high-precision sampler for medical experiments.
In the figure: 1-outer sleeve, 2-inner lining tube, 3-positioning block, 4-pumping column, 5-measuring scale, 6-second sealing ring, 7-first sealing ring, 8-scurf sampling mechanism, 81-rotating disc, 82-moving disc, 83-sampling claw, 84-clamping rod, 85-ball, 86-connecting disc, 9-handle, 10-positioning rod, 11-positioning disc, 12-needle sleeve, 13-needle tube, 14-connecting tube, 15-clamping disc, 16-clamping groove and 17-clamping block.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to specific embodiments.
Example 1
Referring to fig. 1-6, a high-precision sampler for medical experiments comprises an outer sleeve 1, a pumping column 4, a needle tube 13 and a handle 9, wherein one end of the pumping column 4 is fixedly connected with the handle 9, the other end of the pumping column extends into the inner wall of the outer sleeve 1, the front end of the outer sleeve 1 is also connected with the needle tube 13 through a connecting tube 14, an inner lining tube 2 is further arranged between the outer sleeve 1 and the pumping column 4, the front end of the inner lining tube 2 is connected to the outer sleeve 1 and is in through connection with the needle tube 13, the pumping column 4 is arranged inside the inner lining tube 2 in a sliding and adhering mode, a second sealing ring 6 is further adhered to the circumferential surface of the pumping column 4, and a first sealing ring 7 is further adhered to the front end of the; the circumferential surface of the pumping column 4 is also fixedly connected with a measuring scale 5, a gap exists between the measuring scale 5 and the lining pipe 2, and measuring scales are also carved on the measuring scale 5; the circumferential surface of the lining pipe 2 is also sleeved with a positioning block 3 matched with the measuring scale 5.
Dipperstick 5 includes front end and rear end, and the front end is close to locating piece 3, the scale size on the dipperstick 5 increases in proper order according to the route from the rear end to the anterior segment.
Before use, the handle 9 is pushed, the handle 9 pushes the twitching column 4 to perform exhaust motion along the inner wall of the lining pipe 2, and when the front end of the first sealing ring 7 props against the front end of the lining pipe 2, the front end of the measuring scale 5 just contacts with the positioning block 3, and at the moment, the coincidence position of the rear end of the measuring scale 5 and the outer edge of the outer sleeve 1 is set to be 0 scale; during the use, submerge the front end of needle tubing 13 in the solution completely, prevent that sample in-process needle tubing 13 from mistake evacuation air, lead to final measuring result error, slowly pull handle 9, make handle 9 drive to twitch post 4 and do the laminating slip along the inner wall of interior bushing pipe 2, after extracting a certain amount of solution, look level measuring ruler 5 horizontally, and observe the scale on the measuring ruler 5, because there is not air in interior bushing pipe 2 this moment, consequently can be with twitching the relative interior bushing pipe 2 distance substitution volume formula that moves of post 4, can calculate the volume that twitch post 4 removed, the gained volume is the volume of drawing solution promptly, promptly for in needle tubing 13 and interior bushing pipe 2 solution volume sum promptly.
Example 2
In order to improve the sampling efficiency of the invention, an improvement is added on the basis of the embodiment 1, and the improvement is as follows: referring to fig. 1-6, the front end of the outer sleeve 1 is further provided with a dandruff sampling mechanism 8, the dandruff sampling mechanism 8 comprises a rotating disc 81, a moving disc 82 and a clamping rod 84, the inner side of the rotating disc 81 is connected with a connecting disc 86 in a rolling manner through balls 85, the connecting disc 86 is fixedly connected to the end surface of the outer sleeve 1, and the number of the balls 85 is multiple; the rotating disc 81 is also internally provided with a plurality of clamping grooves, the clamping grooves are clamped with one ends of the clamping rods 84, the other ends of the clamping rods 84 are fixedly connected to the moving disc 82, and the number of the clamping rods 84 is multiple; a plurality of sampling claws 83 are fixedly connected to the end surface of the moving disk 82.
Each sampling claw 83 is provided with a chip storage groove. When the embodiment is applied to blood sampling, the epidermal tissue of a person to be sampled is also required to be sampled, and the design can sample the blood and the epidermal tissue simultaneously, so that the time is saved;
specifically, when the skin scraping device is used, the movable disc 82 and the rotary disc 81 are pulled open through the clamping action of the clamping rod 84, then the movable disc 82 is rotated, the movable disc 82 drives the clamping rod 84 to further drive the rotary disc 81 to rotate, the rotary disc 81 and the connecting disc 86 are connected in a rolling mode through the balls 85, the connecting disc 86 is fixedly connected to the outer sleeve 1, the rotary disc 81 can rotate relative to the outer sleeve 1, and the movable disc 82 can drive the sampling claws 83 to scrape skin scraps on the skin surface;
more specifically, still seted up the chip groove in the claw 83 of taking a sample, consequently can further store the dander tissue of scraping off, guarantee the thoroughness of disposable sample.
Example 3
The invention also designs a needle changing mechanism on the basis of the above embodiment, please refer to fig. 1-6, and further comprises a needle changing mechanism, wherein the needle changing mechanism comprises a positioning disc 11, a needle sleeve 12, a needle tube 13 and a positioning rod 10, and a chuck 15 is rotatably connected in the middle of the positioning disc 11; one end of the positioning rod 10 is arranged in a small hole formed in the handle 9 in a penetrating manner, and the other end of the positioning rod is fixedly connected to the chuck 15; the circumferential surface of the positioning disk 11 is detachably connected with a plurality of needle sleeves 12, and the number of the needle sleeves 12 is multiple; a needle tube 13 is arranged in the needle sleeve 12.
A plurality of clamping grooves 16 are formed in the end face of the positioning plate 11, and the clamping grooves 16 are distributed on the positioning plate 11 at equal angles; a clamping block 17 is also fixedly connected to the end surface of the chuck 15.
The cross sections of the positioning disc 11 and the chuck 15 are both circular and are arranged concentrically; one end of the clamping block 17 is fixedly connected to the circle center of the chuck 15, and the other end of the clamping block is clamped in the clamping groove 16; the centers of the needle sleeve 12, the clamping groove 16 matched with the needle sleeve 12 and the chuck 15 are positioned on the same straight line.
Preferably, the invention also designs a needle changing mechanism on the basis of the above embodiments, because the length of the needle tube used may have different requirements for different sampling objects, and the needle tube needs to be aligned first before the needle tube is assembled and disassembled each time, and the orifice of the needle tube is small, which makes the operation difficult.
Specifically, one end of the positioning rod 10 is inserted into a small hole in the handle 9, the positioning rod 10 is centered, the positioning disc 11 is rotated, the positioning disc 11 drives the needle sleeve 12 to rotate relative to the chuck 15, and the fixture block 17 is fixedly connected with the chuck 15, so that when the fixture block 17 rotates and is clamped on the clamping groove 16 arranged on the positioning disc 11, the needle sleeve 12 can be correspondingly rotated to the position of the connecting pipe 14 inserted with the needle tube 13, and because the needle sleeve 12 is detachably connected with the positioning disc 11, the needle tube 13 can be driven through the needle sleeve 12, the needle tube 13 is directly inserted into the connecting pipe 14, and when the needle needs to be changed, the operations are repeated.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. A high-precision sampler for medical experiments comprises an outer sleeve (1), a pumping column (4), a needle tube (13) and a handle (9), wherein one end of the pumping column (4) is fixedly connected with the handle (9), the other end of the pumping column extends into the inner wall of the outer sleeve (1), the front end of the outer sleeve (1) is connected with the needle tube (13) through a connecting tube (14), the high-precision sampler is characterized in that a lining tube (2) is further arranged between the outer sleeve (1) and the pumping column (4), the front end of the lining tube (2) is connected to the outer sleeve (1) and is communicated with the needle tube (13), the pumping column (4) is arranged in the lining tube (2) in a sliding fit mode, a second sealing ring (6) is further bonded to the circumferential surface of the pumping column (4), and a first sealing ring (7) is further bonded to the front end of the pumping column (; a measuring scale (5) is fixedly connected to the circumferential surface of the pumping column (4), a gap exists between the measuring scale (5) and the lining pipe (2), and measuring scales are engraved on the measuring scale (5); the circumferential surface of the lining pipe (2) is also sleeved with a positioning block (3) matched with the measuring scale (5).
2. A medical experiment high accuracy sampler according to claim 1, characterized in that the measuring ruler (5) comprises a front end and a rear end, the front end is close to the positioning block (3), and the scale size on the measuring ruler (5) increases in turn according to the path from the rear end to the front section.
3. The high-precision sampler for medical experiments according to claim 1, wherein the front end of the outer sleeve (1) is further provided with a dandruff sampling mechanism (8), the dandruff sampling mechanism (8) comprises a rotating disc (81), a moving disc (82) and a clamping rod (84), the inner side of the rotating disc (81) is connected with a connecting disc (86) in a rolling manner through balls (85), the connecting disc (86) is fixedly connected to the end surface of the outer sleeve (1), and the number of the balls (85) is multiple; the rotating disc (81) is also internally provided with a clamping groove, the clamping groove is clamped with one end of a clamping rod (84), the other end of the clamping rod (84) is fixedly connected to the moving disc (82), and the clamping rods (84) are multiple in number; the end surface of the movable disc (82) is also fixedly connected with a plurality of sampling claws (83).
4. A high-precision sampler for medical experiments according to claim 3, characterized in that each sampling claw (83) is provided with a chip storage groove.
5. The high-precision sampler for medical experiments according to claim 1, further comprising a needle changing mechanism, wherein the needle changing mechanism comprises a positioning disc (11), a needle sleeve (12), a needle tube (13) and a positioning rod (10), and a chuck (15) is rotatably connected in the middle of the positioning disc (11); one end of the positioning rod (10) penetrates through a small hole formed in the handle (9), and the other end of the positioning rod is fixedly connected to the chuck (15); the periphery of the positioning disc (11) is detachably connected with a plurality of needle sleeves (12), and the number of the needle sleeves (12) is multiple; a needle tube (13) is arranged in the needle sleeve (12) in a penetrating way.
6. The high-precision sampler for medical experiments according to claim 5, wherein the end surface of the positioning plate (11) is provided with a plurality of clamping grooves (16), and the plurality of clamping grooves (16) are distributed on the positioning plate (11) at equal angles; and a clamping block (17) is also fixedly connected to the end surface of the chuck (15).
7. The high-precision sampler for medical experiments according to claim 6 is characterized in that the cross-sectional shapes of the positioning disc (11) and the chuck (15) are both circular and are arranged concentrically; one end of the clamping block (17) is fixedly connected to the circle center of the chuck (15), and the other end of the clamping block is clamped in the clamping groove (16); the centers of the needle sleeve (12), the clamping groove (16) matched with the needle sleeve (12) and the chuck (15) are positioned on the same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010745447.7A CN111855311B (en) | 2020-07-29 | 2020-07-29 | High-precision sampler for medical experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010745447.7A CN111855311B (en) | 2020-07-29 | 2020-07-29 | High-precision sampler for medical experiment |
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| Publication Number | Publication Date |
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| CN111855311A true CN111855311A (en) | 2020-10-30 |
| CN111855311B CN111855311B (en) | 2021-07-27 |
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| CN202010745447.7A Active CN111855311B (en) | 2020-07-29 | 2020-07-29 | High-precision sampler for medical experiment |
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| WO2010048752A1 (en) * | 2008-10-29 | 2010-05-06 | Pan Qiubao | Needle-replacing apparatus mating with split-type continuous injector |
| CN204116090U (en) * | 2014-11-07 | 2015-01-21 | 赵勇 | A kind of medical inspection sampler |
| CN204336932U (en) * | 2014-12-19 | 2015-05-20 | 高艳飞 | A kind of laboratory medicine blood taking needle |
| CN205893621U (en) * | 2016-07-27 | 2017-01-18 | 浙江兆山机电有限公司 | Computerized embroidery machine with many syringe needles needle bar |
| CN206627315U (en) * | 2017-03-27 | 2017-11-10 | 杜文燕 | A kind of medical inspection microscale sampler |
| CN206818476U (en) * | 2017-05-11 | 2017-12-29 | 西安雁塔祈康中西医结合医院有限公司 | Medical science inspection micro sampler |
| CN207429125U (en) * | 2017-04-11 | 2018-06-01 | 刘长军 | Department of general surgery's cutaneous punch |
| CN108324289A (en) * | 2018-04-17 | 2018-07-27 | 青岛市市立医院 | A kind of blood collection device of medical test |
| CN209847322U (en) * | 2019-01-29 | 2019-12-27 | 王延涛 | Medical oncology intervenes treatment device |
-
2020
- 2020-07-29 CN CN202010745447.7A patent/CN111855311B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010048752A1 (en) * | 2008-10-29 | 2010-05-06 | Pan Qiubao | Needle-replacing apparatus mating with split-type continuous injector |
| CN204116090U (en) * | 2014-11-07 | 2015-01-21 | 赵勇 | A kind of medical inspection sampler |
| CN204336932U (en) * | 2014-12-19 | 2015-05-20 | 高艳飞 | A kind of laboratory medicine blood taking needle |
| CN205893621U (en) * | 2016-07-27 | 2017-01-18 | 浙江兆山机电有限公司 | Computerized embroidery machine with many syringe needles needle bar |
| CN206627315U (en) * | 2017-03-27 | 2017-11-10 | 杜文燕 | A kind of medical inspection microscale sampler |
| CN207429125U (en) * | 2017-04-11 | 2018-06-01 | 刘长军 | Department of general surgery's cutaneous punch |
| CN206818476U (en) * | 2017-05-11 | 2017-12-29 | 西安雁塔祈康中西医结合医院有限公司 | Medical science inspection micro sampler |
| CN108324289A (en) * | 2018-04-17 | 2018-07-27 | 青岛市市立医院 | A kind of blood collection device of medical test |
| CN209847322U (en) * | 2019-01-29 | 2019-12-27 | 王延涛 | Medical oncology intervenes treatment device |
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| CN111855311B (en) | 2021-07-27 |
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