CN220854302U

CN220854302U - Plasma sampling device

Info

Publication number: CN220854302U
Application number: CN202322685925.1U
Authority: CN
Inventors: 冯伟; 刘立瑶; 武晓; 石静文
Original assignee: Bohui Biopharmaceutical Hebei Co ltd
Current assignee: Bohui Biopharmaceutical Hebei Co ltd
Priority date: 2023-10-08
Filing date: 2023-10-08
Publication date: 2024-04-26
Anticipated expiration: 2033-10-08

Abstract

The utility model discloses a plasma sampling device which comprises a sampling needle, a sampling tube and a rubber piston, wherein the top end of the sampling needle is connected with a connecting nozzle, the outer side of the sampling needle is provided with a covering structure, the top end of the connecting nozzle is connected with the sampling tube, and the top end of the sampling tube is provided with a moving mechanism. According to the utility model, the storage battery in the electric box is used for supplying power, the stepping motor is started to drive the screw rod to rotate forwards or reversely through the driving wheel, the driving belt drives the screw rod connected with the driving wheel on the right side to rotate forwards or reversely along with the rotation of the driving wheel on the left side, then the two groups of moving blocks drive the rubber piston connected with the pull rod to gradually move upwards or downwards through threaded engagement, so that negative pressure can be generated in the sampling tube to extract plasma samples or the plasma extracted in the sampling tube can be pushed out, the automatic moving function of the device is realized, the convenience of the device is improved, the manual operation of staff is facilitated to be reduced, and the sampling efficiency is ensured.

Description

Plasma sampling device

Technical Field

The utility model relates to the technical field of plasma sampling, in particular to a plasma sampling device.

Background

The main function of the blood plasma is to carry blood cells, transport substances required for maintaining vital activities of human bodies, wastes generated in the body and the like, is equivalent to the cell matrix of connective tissues, is an important component of blood and is in a faint yellow liquid, and in the process of detecting the blood plasma, in order to avoid manual sampling and polluting samples, a sampling device is necessary for sampling;

The prior art scheme has the following defects: when the device is used, the defect that the automatic movement is inconvenient is overcome, the piston on the traditional plasma sampling device is generally pushed and pulled manually and cannot automatically move up and down to push, a worker needs to hold the sampling tube by one hand, and the pulling rod is pushed and pulled by the other hand to drive the piston to move for use, so that the workload of manual operation of the worker is increased, the sampling tube is taken by the other hand to be unstable, the sampling efficiency is seriously affected, and the convenience of the device is reduced.

Disclosure of utility model

The present utility model is directed to a plasma sampling device, which solves the above-mentioned problems.

In order to solve the technical problems, the utility model provides the following technical scheme: plasma sampling device, including sample needle, sample tube and rubber piston, the top of sample needle is connected with the connecting nozzle, the outside of sample needle is provided with covers the structure, the top of connecting nozzle is connected with the sample tube, and the outside of sample tube is connected with the fixed shell, the outside of fixed shell all is provided with annular lug, the top of sample tube is provided with moving mechanism, and one side of moving mechanism is provided with the pull rod, the bottom of pull rod is connected with the rubber piston, moving mechanism includes electric box, step motor, drive wheel, drive belt, screw rod, movable block and shell, the both sides at the sample tube are all connected to the shell, the top of shell is connected with the electric box, step motor is installed to the internally mounted at shell top, and the drive wheel is installed to step motor's bottom, the outside cover of drive wheel is equipped with the drive belt, the screw rod is installed to the bottom of drive wheel, and the outside threaded connection of screw rod has the movable block.

By using the plasma sampling device of the technical scheme, the storage battery in the electric box is used for supplying power, the stepping motor is started to drive the screw rod to rotate positively through the driving wheel, meanwhile, the driving belt drives the screw rod connected with the other group of driving wheels on the right side to rotate positively along with the rotation of the driving wheel on the left side, then the two groups of moving blocks drive the rubber piston connected with the pull rod to move upwards gradually along the inner wall of the shell through threaded engagement, so that negative pressure is generated in the sampling tube to extract plasma samples, otherwise, the stepping motor is started to drive the screw rod to rotate reversely, and the moving blocks can drive the rubber piston to move downwards gradually to push out the plasma samples in the sampling tube.

Preferably, the cover structure includes protection sleeve shell, pull rod, extension spring, bolt and pull handle, the outside at the sample needle is established to the protective sheath shell cover, the inside of protection sleeve shell both sides all is provided with extension spring, and one side of extension spring is connected with the bolt, one side of bolt is connected with the pull rod, the bottom of protection sleeve shell is connected with the pull handle. The two groups of pulling rods are pulled simultaneously to drive the two groups of bolts to compress the four groups of telescopic springs to enter the interior of the protective sleeve, the protective sleeve is then moved to be sleeved on the surface of the sampling needle, the bolts are aligned with holes on the connecting nozzle by upward movement, and then the pulling rods are loosened to enable the telescopic springs to rebound to push the bolts to be inserted into the connecting nozzle so as to clamp and fix the protective sleeve, and the sampling needle is covered by the clamped and fixed protective sleeve, so that the sampling needle is prevented from being exposed and polluted.

Preferably, the pulling rod penetrates through the protection sleeve shell to be connected with the bolt, so that the pulling rod is fixedly connected with the bolt, the pulling rod is convenient to drive the bolt to flexibly leave or enter the inside of the connecting nozzle, the left end of the telescopic spring is connected with the inner wall of the protection sleeve shell, the telescopic spring is fixedly connected with the inner wall of the protection sleeve shell, and the protection sleeve shell is convenient to support and fix the telescopic spring.

Preferably, the telescopic spring and the bolt form a telescopic structure, so that the bolt moves along with the telescopic spring, the bolt is convenient to enter or leave the inside of the connecting nozzle, the bolts are symmetrically distributed on two sides of the connecting nozzle, the symmetrically distributed bolts are inserted into the connecting nozzle, and the protective sleeve is convenient to clamp and limit.

Preferably, the size of the protection sleeve is larger than that of the sampling needle, so that the protection sleeve can cover the sampling needle, the sampling needle is convenient to prevent from being exposed and polluted, the plasma sampling effect is affected, and the protection sleeve and the pull handle are of an integrated structure. The protective sleeve and the pull handle are integrally formed, so that the pull handle and the protective sleeve are conveniently prevented from separating and falling off.

Preferably, the bottom of screw rod is connected with the bearing in the shell, makes the bottom and the bearing of screw rod be connected, is convenient for guarantee screw rod along with step motor pivoted effect, set up on the inner wall of movable block with screw rod on external screw thread matched with internal thread, make movable block and forward or reverse pivoted screw rod screw thread meshing, be convenient for drive the sampling tube through the pull rod and reciprocate.

Preferably, the movable block is connected with the pull rod, so that the movable block is more tightly connected with the pull rod, the movable block is convenient to drive the pull rod to move up and down, the screws are symmetrically distributed on two sides of the top end of the pull rod, the symmetrically distributed screws ensure the stability of the pull rod, and the pull rod is convenient to drive the sampling tube to stably push and pull.

Compared with the prior art, the utility model has the beneficial effects that: the plasma sampling device has reasonable structure and has the following advantages:

(1) The storage battery in the electric box is used for supplying power, the stepping motor is started to drive the screw rod to rotate forwards or reversely through the driving wheel, the driving belt drives the screw rod connected with the driving wheel on the right side to rotate forwards or reversely along with the rotation of the driving wheel on the left side, then the two groups of moving blocks drive the rubber piston connected with the pull rod to gradually move upwards or downwards through threaded engagement, so that negative pressure can be generated in the sampling tube to extract plasma samples or the plasma extracted in the sampling tube can be pushed out, the automatic moving function of the device is realized, the convenience of the device is improved, the manual operation of workers is facilitated to be reduced, and the sampling efficiency is ensured;

(2) The two groups of pulling rods are pulled simultaneously to drive the two groups of bolts to compress the four groups of telescopic springs to enter the protective sleeve, the protective sleeve is then sleeved on the surface of the sampling needle, the bolts are driven to move to align with the holes on the connecting nozzle, and then the pulling rods are loosened, so that the telescopic springs rebound to push the bolts to be inserted into the connecting nozzle to clamp the protective sleeve for fixing, the sampling needle is covered by the fixed protective sleeve for reinforcing protection, the covering protection function of the device is realized, the functionality of the device is improved, the sampling needle is prevented from being exposed and polluted, and the quality of plasma sampling is influenced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional elevation view of the present utility model;

FIG. 2 is a schematic elevational view of the present utility model;

FIG. 3 is an enlarged partial cross-sectional view of the structure of FIG. 1A according to the present utility model;

Fig. 4 is a schematic cross-sectional front view of the moving mechanism of the present utility model.

Reference numerals in the drawings illustrate: 1. a sampling needle; 2. a covering structure; 201. a protective sleeve; 202. pulling the rod; 203. a telescopic spring; 204. a plug pin; 205. a pull handle; 3. a connecting nozzle; 4. a sampling tube; 5. a moving mechanism; 501. an electric box; 502. a stepping motor; 503. a driving wheel; 504. a drive belt; 505. a screw; 506. a moving block; 507. a housing; 6. a pull rod; 7. a rubber piston; 8. a fixed case; 9. and an annular bump.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by one of ordinary skill in the art without inventive faculty, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

Referring to fig. 1-4, the plasma sampling device provided by the utility model comprises a sampling needle 1, a sampling tube 4 and a rubber piston 7, wherein the top end of the sampling needle 1 is connected with a connecting nozzle 3, the outer side of the sampling needle 1 is provided with a covering structure 2, the top end of the connecting nozzle 3 is connected with the sampling tube 4, the outer side of the sampling tube 4 is connected with a fixed shell 8, the outer side of the fixed shell 8 is provided with an annular bump 9, the top end of the sampling tube 4 is provided with a moving mechanism 5, one side of the moving mechanism 5 is provided with a pull rod 6, the bottom end of the pull rod 6 is connected with a rubber piston 7, the moving mechanism 5 comprises an electric box 501, a stepping motor 502, a driving wheel 503, a driving belt 504, a screw 505, a moving block 506 and a shell 507, the shell 507 is connected to two sides of the sampling tube 4, the top end of the shell 507 is connected with the electric box 501, the stepping motor 502 is internally mounted at the top end of the shell 507, the driving wheel 503 is sleeved with a driving belt 504, the bottom end of the driving wheel 503 is mounted with a screw 505, the outer side of the screw 505 is connected with a moving block 506, the bottom end of the screw 505 is connected with the moving block 506 in the inner wall of the shell 507, the moving block 506 is connected with the inner wall of the moving block 506 in the moving block 505, and the inner wall of the inner wall 505 is in the threaded form of the inner side of the screw 6, and the two sides are in a symmetric thread with the screw joint with the screw 6.

The working principle of the plasma sampling device based on the first embodiment is as follows: the sampling tube 4 is held by both hands to ensure the stability of the sampling needle 1, the sampling needle 1 can be stably aligned in a container filled with plasma, then the rubber piston 7 is driven by the pull rod 6 to gradually move upwards, the sampling tube 4 generates negative pressure, the sampling needle 1 is convenient for sucking a plasma sample into the sampling tube 4 through the connecting nozzle 3 to sample, then the sampled sampling tube 4 is driven by the sampling tube 1 to be aligned and inserted into a sampling test tube, the rubber piston 7 is driven by the pull rod 6 to move downwards to push the plasma sample in the sampling tube 4 out of the sampling needle 1 and into the test tube, thereby the complete sampling process is realized, meanwhile, the contact friction force between the hand and the fixed shell 8 is increased through a plurality of groups of annular convex blocks 9 sleeved on the fixed shell 8 of the surface of the sampling tube 4, the hand is convenient for holding the sampling tube 4 more firmly, the slipping and the slipping is prevented, the storage battery in the electric box 501 is used for supplying power, the stepping motor 502 is started to drive the screw 505 to rotate positively through the driving wheel 503, meanwhile, the driving belt 504 drives the screw 505 connected with the other group of driving wheels 503 on the right to rotate positively along with the rotation of the driving wheel 503 on the left, then the two groups of moving blocks 506 drive the rubber piston 7 connected with the pull rod 6 to move upwards gradually along the inner wall of the shell 507 through threaded engagement, so that negative pressure plasma samples are conveniently extracted in the sampling tube 4, when the samples in the sampling tube 4 are required to be led out, the stepping motor 502 is started to drive the screw 505 to rotate reversely, so that the moving blocks 506 can drive the rubber piston 7 on the pull rod 6 to move downwards gradually through threaded engagement, the plasma samples in the sampling tube 4 are convenient to push out, and manual operation of staff is reduced.

Example two

The embodiment comprises the following steps: the covering structure 2 comprises a protection sleeve 201, a pull rod 202, a telescopic spring 203, a plug pin 204 and a pull handle 205, wherein the protection sleeve 201 is sleeved on the outer side of the sampling needle 1, the telescopic spring 203 is arranged in the protection sleeve 201, one side of the telescopic spring 203 is connected with the plug pin 204, one side of the plug pin 204 is connected with the pull rod 202, the bottom end of the protection sleeve 201 is connected with the pull handle 205, the pull rod 202 penetrates through the protection sleeve 201 to be connected with the plug pin 204, the left end of the telescopic spring 203 is connected with the inner wall of the protection sleeve 201, the telescopic spring 203 and the plug pin 204 form a telescopic structure, the plug pin 204 is symmetrically distributed on two sides of the connecting nozzle 3, the size of the protection sleeve 201 is larger than that of the sampling needle 1, and the protection sleeve 201 and the pull handle 205 are of an integrated structure.

In this embodiment, two sets of pull rods 202 are pulled simultaneously to drive two sets of bolts 204 to compress four sets of telescopic springs 203 into the interior of a protective sleeve 201, then the protective sleeve 201 is moved to be aligned and sleeved on the surface of a sampling needle 1 through a pull handle 205, then the protective sleeve 201 is pushed upwards to drive the bolts 204 to be aligned and stopped with holes on a connecting nozzle 3, the protective sleeve 201 can be clamped and limited by inserting the bolts 204 into the connecting nozzle 3 through rebound pushing of the telescopic springs 203 by loosening the pull rods 202, the sampling needle 1 is conveniently covered by clamping the fixed protective sleeve 201, the sampling needle 1 is prevented from being exposed and polluted, and the quality of plasma sampling is influenced.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. Plasma sampling device, including sample needle (1), sampling tube (4) and rubber piston (7), its characterized in that: the utility model discloses a sampling needle, including sampling needle (1) and shell (507), sampling needle (1), connecting nozzle (3) are connected with in the top of sampling needle (1), connecting nozzle (3) are connected with sampling tube (4), and sampling tube (4) are connected with fixed shell (8) in the outside, the outside of fixed shell (8) all is provided with annular lug (9), sampling tube (4) are provided with moving mechanism (5) on the top, and one side of moving mechanism (5) is provided with pull rod (6), rubber piston (7) are connected with in the bottom of pull rod (6), moving mechanism (5) including electric box (501), step motor (502), drive wheel (503), drive belt (504), screw rod (505), movable block (506) and shell (507), the both sides at sampling tube (4) are all connected to shell (507) are connected with electric box (501) on the top, internally mounted on shell (507) top has step motor (502), and drive wheel (503) are installed to step motor (502) on the bottom, drive wheel (503) are equipped with outside drive belt (503), and a moving block (506) is connected with the outer side of the screw rod (505) in a threaded manner.

2. The plasma sampling device of claim 1, wherein: the utility model provides a cover structure (2) is including protection sleeve shell (201), pulling rod (202), extension spring (203), bolt (204) and pull handle (205), the outside at sample needle (1) is established to protection sleeve shell (201) cover, the inside of protection sleeve shell (201) both sides all is provided with extension spring (203), and one side of extension spring (203) is connected with bolt (204), one side of bolt (204) is connected with pulling rod (202), the bottom of protection sleeve shell (201) is connected with pull handle (205).

3. The plasma sampling device of claim 2, wherein: the pulling rod (202) penetrates through the protection sleeve shell (201) to be connected with the bolt (204), and the left end of the telescopic spring (203) is connected with the inner wall of the protection sleeve shell (201).

4. The plasma sampling device of claim 2, wherein: the telescopic spring (203) and the bolt (204) form a telescopic structure, and the bolts (204) are symmetrically distributed on two sides of the connecting nozzle (3).

5. The plasma sampling device of claim 2, wherein: the size of the protective sleeve (201) is larger than that of the sampling needle (1), and the protective sleeve (201) and the pull handle (205) are of an integrated structure.

6. The plasma sampling device of claim 1, wherein: the bottom end of the screw rod (505) is connected with a bearing in the shell (507), and an inner thread matched with an outer thread on the screw rod (505) is arranged on the inner wall of the moving block (506).

7. The plasma sampling device of claim 1, wherein: the moving block (506) is connected with the pull rod (6), and the screw rods (505) are symmetrically distributed on two sides of the top end of the pull rod (6).