CN220153980U - Body fluid is taken and sample preparation isolated plant - Google Patents
Body fluid is taken and sample preparation isolated plant Download PDFInfo
- Publication number
- CN220153980U CN220153980U CN202320933769.3U CN202320933769U CN220153980U CN 220153980 U CN220153980 U CN 220153980U CN 202320933769 U CN202320933769 U CN 202320933769U CN 220153980 U CN220153980 U CN 220153980U
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- piston
- body fluid
- cylinder
- sample preparation
- cylindrical boss
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- 210000001124 body fluid Anatomy 0.000 title claims abstract description 37
- 239000010839 body fluid Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000005070 sampling Methods 0.000 claims abstract description 25
- 239000008280 blood Substances 0.000 claims abstract description 3
- 210000004369 blood Anatomy 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 abstract description 17
- 238000001514 detection method Methods 0.000 abstract description 10
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000023555 blood coagulation Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000002485 urinary effect Effects 0.000 description 1
Abstract
The utility model provides a body fluid is taken and sample preparation isolated plant, belongs to the detection analysis technical field in body fluid sampling and the sample preparation process, including the cylinder, slide locate the inside piston of cylinder, the core bar that links to each other with the piston and set up at the cylinder front end and be connected with the blood taking needle the connector, the piston is the hollow cylinder of no lid, the bottom surface center of its top apron is equipped with cylindrical boss, the piston is provided with the diameter the same with cylindrical boss center, runs through the through-hole of piston top and cylindrical boss, through-hole department is equipped with the wedge stopper, the core bar top links to each other with the piston with the help of the helicitic texture and forms detachable construction. The core rod, the wedge-shaped plug and the blocking cap can enable the needle cylinder to form a closed space to be directly used for centrifugation, the through holes are convenient for the sampling device to enter after centrifugation, and pollution caused by large-area contact of body fluid and air after centrifugation in a traditional mode is avoided.
Description
Technical Field
The utility model belongs to the technical field of detection and analysis in the process of body fluid sampling and sample preparation, and particularly relates to a special device for body fluid sampling and sample preparation, which can be used for body fluid sampling and sample preparation.
Background
In a medical institution or a detection laboratory, such as links of body fluid biochemical examination, blood coagulation function examination, urinary sediment examination, lavage fluid specimen examination, or in a laboratory examination process of the detection laboratory, a specimen used for detection is usually placed for a period of time, centrifuged, and then a required portion is taken for detection. In such detection cases, the specimen that is not centrifuged is not directly available for detection. Sampling, centrifugation and stratification detection of body fluids are therefore one of the important links in the medical field.
The currently used centrifuge tubes are all independent, and an inspector needs to take body fluid out of the liquid suction tube, transfer the body fluid into a centrifuge tube, and put the centrifuge tube into a centrifuge for centrifugation. And opening the tube cover after centrifugation, and sampling by using a sampling needle. The steps can directly expose the body fluid to the air for a long time in a large area, sample pollution is easy to cause, the risk of influencing the accuracy of the final test or detection result exists, the cost is high, and the efficiency is low; at the same time, body fluid samples exposed to air may also cause contamination of the surrounding environment; the current tools are not special devices and improvements are needed.
Disclosure of Invention
The utility model aims to provide a special device for body fluid collection and sample preparation, which solves the problem that the body fluid sample is polluted due to the contact of the body fluid with air caused by the opening of a cover when the body fluid is transferred and sampled in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a body fluid is taken and sample preparation isolated plant, includes the cylinder, slides the piston of locating the inside of cylinder, the core bar that links to each other with the piston and sets up at the cylinder front end and be connected with the blood taking needle, and the core bar is hollow cylinder structure, its external surface slides and locates the inside of cylinder, the top is provided with the boss, the boss outside is provided with the external screw thread structure, the piston inboard is provided with the internal thread and cooperates with the screw thread of core bar top boss. The piston is a hollow cylinder without a cover, a cylindrical boss is arranged in the center of the bottom surface of a top cover plate of the hollow cylinder, through holes with the same diameter and penetrating through the top of the piston and the cylindrical boss are arranged in the centers of the piston and the cylindrical boss, wedge plugs are arranged at the through holes, and the top of the core rod is connected with the piston through a threaded structure to form a detachable structure.
The diameter is the same at piston and cylindrical boss center, runs through the through-hole of piston and cylindrical boss in order to solve when sampling and make body fluid and air contact thereby lead to the body fluid sample contaminated problem owing to the opening of lid, sets up the through-hole and can make things convenient for follow-up sampling device's insertion.
The connector of cylinder front end contains and cooperatees with the connector, through the stifled cap that the screw thread links to each other, the connector sets up in cylinder top center pin position, its structure is luer male connection, simultaneously, the through-hole mouth department of cylindrical boss on the piston is provided with through-hole interference fit's wedge stopper, has guaranteed when centrifuging, and body top and bottom are the closure state.
Preferably, the top of the sampling tube is used for connecting a connector connected with the liquid extracting device and the needle cylinder into a whole, and the connector is arranged at the center of the top of the sampling tube for balancing the device during centrifugation.
Preferably, 3-6 reinforcing ribs are uniformly arranged between the bottom of the piston and the cylindrical boss.
Preferably, the special device for body fluid collection and sample preparation is made of PVC plastic.
The utility model has the technical effects and advantages that: compared with the prior art, the special device for body fluid collection and sample preparation has the following advantages:
1. the utility model adopts the separable use of the piston and the core rod, and achieves the effect of integrating the body fluid pumping device and the centrifugal sampling device. The core rod and the piston are connected through threads, and the threaded connection is used as a widely used detachable fixed connection, and has the advantages of simple structure, reliable connection, convenient assembly and disassembly and the like.
2. The through hole in the center of the piston and the boss ensures that the sampling device can directly enter the tube for sampling after centrifugation, abandons the traditional mode of completely opening the cover of the centrifuge tube, greatly reduces the contact area of body fluid and air and reduces pollution.
3. In the utility model, the wedge-shaped plug in interference fit is arranged at the through hole of the piston boss, the plug is provided with the plug cap matched with the plug, and the plug can ensure that the pipe body part can be an independent and sealed whole after the core rod is taken down, so as to ensure the follow-up centrifugation link.
4. 3-6 reinforcing ribs are uniformly arranged between the bottom of the piston and the cylindrical boss, so that the strength and rigidity of the product can be enhanced under the condition of not increasing the wall thickness of the piston, the consumption of plastic is saved, the weight is reduced, and the cost is reduced.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present utility model.
Fig. 2 is a schematic structural view of embodiment 2 of the present utility model.
In the accompanying drawings: 1 is a plugging cap, 2-1 is a connector, 2-2 is a needle cylinder, 3 is a piston, 3-1 is a piston top cover plate, 3-2 is a cylindrical boss, 3-3 is a positioning groove, 4 is a through hole, 5 is a wedge-shaped plug, 6 is a core bar, 6-1 is a core bar boss, 6-2 is a groove, 7 is an annular cap, 7-1 is a positioning boss, and 8 is a reinforcing rib.
Detailed Description
The present utility model will be further described with reference to fig. 1.
FIG. 1 is a block diagram of a modified body fluid sampling and sample making special device of the present utility model. The outer part is similar to the existing injector, and is provided with a needle cylinder 2-2 and a connector 2-1. Unlike the prior art, the core rod 6 is connected with the piston 3 through threads, the core rod 6 is of a hollow cylindrical structure, the outer surface of the core rod 6 is slidably arranged in the needle cylinder, the top of the core rod 6 is provided with a boss 6-1, and the outer side of the boss 6-1 is provided with a thread structure matched with the piston. This arrangement allows the core rod 6 to be separated from the piston 3. In addition, a through hole is formed in the middle of the piston 3. The connector 2-1 at the front end of the needle cylinder is a luer male connector and also comprises a plugging cap 1 matched with the connector 2-1 and connected through threads, and the connector 2-1 is arranged at the central shaft position at the top of the needle cylinder. The blocking cap 1 can ensure that the top end of the needle cylinder 2-2 is in a closed state during centrifugation.
The piston 3 of the special device for body fluid collection and sample preparation is provided with a hollow cylinder without a cover, the center of the bottom surface of the top cover plate 3-1 is provided with a cylindrical boss 3-2, and the centers of the piston 3 and the cylindrical boss 3-2 are provided with through holes 4 with the same diameter and penetrating through the top of the piston and the cylindrical boss 3-2. The through hole 4 mouth department of boss is provided with the wedge stopper 5 with through-hole 4 interference fit, and wedge stopper 5 can guarantee before the sampling that needle cylinder 2-2 bottom is in the sealed state too. During sampling, the wedge-shaped plug 5 is opened, and the sampling device can draw out a required part of body fluid from the annular cap through the through hole 4 and into the tube. This can solve the problem that the body fluid is contaminated by the large area of contact with the air due to the complete opening of the cover during sampling.
The connector 2-1 for connecting with the liquid extracting device at the top of the sampling tube is integrated with the needle cylinder 2-2, and the connector 2-1 is arranged at the center of the top of the sampling tube for balancing the device during centrifugation.
Reinforcing ribs 8 are uniformly arranged between the bottom of the piston 3 and the cylindrical boss 3-2, and the number of the reinforcing ribs is 3-6. The strength and rigidity of the product are enhanced under the condition of not increasing the wall thickness of the piston, the plastic consumption is saved, the weight is reduced, and the cost can be reduced.
The composite pipe is made of PVC plastic.
Before centrifugation, the core rod 6 is separated from the piston 3, then the blocking cap 1 and the connector 2-1 are screwed, and the needle cylinder 2-2 can be directly used for centrifugation. After centrifugation, the wedge-shaped plug 5 in the through hole 4 is taken down, and the sampling device can be stretched into the needle cylinder 2-2 for sampling. The whole process can be completed in one pipe, and pollution caused by large-area contact of body fluid and air after centrifugation in a traditional mode is avoided.
According to the second embodiment of the present utility model, the core bar 6 is connected with the cylindrical boss 3-3 through threads, the top of the connecting rod 6 is provided with a groove 6-2, and the inner side of the groove 6-2 is provided with a thread structure matched with the cylindrical boss 3-2. The opening part of the needle cylinder 2-2 is provided with an annular cap 7, the inner side of the opening part of the piston 3 is provided with a positioning groove 3-3, and the annular cap 7 is provided with a positioning protrusion 7-1 matched with the positioning groove 3-3 for limiting the rotation of the piston. Before centrifugation, the core rod 6 is separated from the cylindrical boss 3-2 on the piston 3, then the blocking cap 1 is screwed with the connector 2-1, and the needle cylinder 2-2 can be directly used for centrifugation.
Claims (7)
1. The utility model provides a body fluid is taken and sample preparation isolated plant, includes cylinder (2-2), slides and locates piston (3) inside cylinder (2-2), core bar (6) that link to each other with piston (3) and set up in cylinder (2-2) front end and connector (2-1) be connected with the blood taking needle, its characterized in that: the piston (3) is a hollow cylinder without a cover, a cylindrical boss (3-2) is arranged in the center of the bottom surface of a top cover plate (3-1) of the hollow cylinder, through holes (4) with the same diameter and penetrating through the top of the piston (3) and the cylindrical boss (3-2) are formed in the center of the piston (3) and the center of the cylindrical boss (3-2), wedge plugs (5) are arranged at the through holes (4), and the top of the core rod (6) is connected with the piston (3) through a threaded structure to form a detachable structure.
2. The body fluid collection and sample preparation dedicated device of claim 1, wherein: the core bar (6) is of a hollow cylindrical structure, the outer surface of the core bar is arranged in the needle cylinder in a sliding mode, a boss (6-1) is arranged at the top of the core bar, an external thread structure is arranged on the outer side of the boss, and an internal thread is arranged on the inner side of the piston (3) and matched with the thread of the boss at the top of the core bar (6).
3. The body fluid collection and sample preparation dedicated device of claim 1, wherein: the core rod (6) can be connected with the cylindrical boss (3-2) of the piston, a groove (6-2) is formed in the top of the core rod (6), and a thread structure matched with the cylindrical boss (3-2) is arranged on the inner side of the groove (6-2).
4. The body fluid collection and sample preparation dedicated device of claim 1, wherein: the connector (2-1) is arranged at the central shaft position at the top of the needle cylinder (2-2) and is of a luer male connector, and the connector (2-1) is also provided with a plugging cap (1) matched with the connector.
5. A body fluid sampling and sample preparation dedicated device according to claim 3, wherein: the needle cylinder is characterized in that an annular cap (7) is arranged at the opening part of the needle cylinder (2-2), a positioning groove (3-3) is formed in the inner wall of the opening part of the piston (3), and a positioning protrusion (7-1) matched with the positioning groove (3-3) is arranged on the annular cap (7).
6. The body fluid collection and sample preparation dedicated device of claim 1, wherein: the bottom surface of the top cover plate (3-1) of the piston (3) is provided with reinforcing ribs (8) which are uniformly arranged by taking the central shaft of the cylindrical boss (3-2) as the shaft.
7. The body fluid collection and sample preparation dedicated device of claim 6, wherein: the number of the reinforcing ribs (8) is 3-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320933769.3U CN220153980U (en) | 2023-04-24 | 2023-04-24 | Body fluid is taken and sample preparation isolated plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320933769.3U CN220153980U (en) | 2023-04-24 | 2023-04-24 | Body fluid is taken and sample preparation isolated plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220153980U true CN220153980U (en) | 2023-12-08 |
Family
ID=89019421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320933769.3U Active CN220153980U (en) | 2023-04-24 | 2023-04-24 | Body fluid is taken and sample preparation isolated plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220153980U (en) |
-
2023
- 2023-04-24 CN CN202320933769.3U patent/CN220153980U/en active Active
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