CN220760392U - Detection needle cleaning device - Google Patents

Abstract

The utility model discloses a detection needle cleaning device, which comprises: a cleaning liquid reservoir containing a cleaning liquid; the first pipetting device comprises a first cylinder, a first piston and a push rod, and the cleaning liquid storage is communicated with the cylinder through a first pipeline; the push rod is fixedly connected with the first piston, and the first piston is pushed to move up and down in the first cylinder body through the push rod; one end of the second pipeline is communicated with an opening at the top of the detection needle to be cleaned; the other end of the second pipeline is communicated with the first cylinder body. The utility model can rapidly clean the detection needle and reduce the consumption of cleaning liquid.

Description

Detection needle cleaning device

Technical Field

The utility model relates to the field of accessory cleaning of coagulation analyzers, in particular to a detection needle cleaning device.

Background

The coagulation analyzer is a detection medical device for clinically measuring the content of various components in human blood, quantifying biochemical analysis results and providing reliable digital basis for clinical diagnosis of various diseases of patients.

The detection needle needs to be washed after detection. This is because after the test is completed, the inner wall and the outer wall of the test needle are still stained with a portion of the blood sample, which is not cleaned, and will affect the next measurement of the blood sample.

Through searching, chinese patent document CN113695322A discloses a sampling needle cleaning device and a cleaning method thereof. The device comprises a sampling needle, a cleaning swab sleeved on the outer side of the sampling needle, a first cleaning component used for cleaning the inner wall of the sampling needle, a second cleaning component used for cleaning the outer wall of the sampling needle, and a main cleaning driving element respectively connected with the first cleaning component and the second cleaning component; the two ends of the first cleaning component are respectively connected with the sampling needle and the main cleaning driving element, and the main cleaning driving element controls the first cleaning component to convey cleaning liquid to the inner wall of the sampling needle for cleaning; the two ends of the second cleaning component are respectively connected with the cleaning swab and the main cleaning driving element, and the main cleaning driving element controls the second cleaning component to convey cleaning liquid to the cleaning swab which is used for cleaning the outer wall of the sampling needle. The utility model controls the first cleaning component and the second cleaning component to clean the inner wall and the outer wall of the sampling needle respectively through the main cleaning driving element, and has the advantages of convenient cleaning and short time consumption so as to prolong the service life of the parts of the sampler.

Chinese patent document CN101960315a discloses an apparatus and method for cleaning a liquid handling probe, which relates to an improved apparatus for cleaning the interior of a liquid handling probe to reduce the amount of time and the volume of cleaning liquid required to clean the probe and to minimize carryover of substances between different samples. In addition to the probes, the device includes one or more wash liquid reservoirs, a pressurized air supply, one or more pumps, two or more valve-controlled probe lines, and its controller that opens and closes valves and drives pumps at desired time intervals.

Chinese patent document CN110871202a discloses a sampling needle cleaning method and a blood cell analyzer, the sampling needle cleaning method comprising: in the working process of a first measuring system connected with a first cavity, a driving device drives a sampling needle to move to the upper part of the first cavity and absorbs liquid in the first cavity, wherein the liquid is liquid containing a hemolytic agent component; the driving device drives the sampling needle to discharge the sucked liquid containing the hemolytic agent component so as to clean the sampling needle. Through the mode, the sampling needle can be cleaned, and the cost is low.

The cleaning device of the sampling needle in the prior art is not suitable for the detection needle of the coagulation analyzer. The present utility model has been completed with the need for redesign and development.

Disclosure of Invention

In view of the above, the present utility model provides a cleaning device for a test needle, which can quickly clean the test needle and reduce the amount of cleaning solution.

The adopted technical scheme is as follows:

a test needle cleaning device comprising:

a cleaning liquid reservoir containing a cleaning liquid;

the first pipetting device comprises a first cylinder, a first piston and a push rod, and the cleaning liquid storage is communicated with the cylinder through a first pipeline; the push rod is fixedly connected with the first piston, and the first piston is pushed to move up and down in the first cylinder body through the push rod;

one end of the second pipeline is communicated with an opening at the top of the detection needle to be cleaned; the other end of the second pipeline is communicated with the first cylinder body.

Further, the first piston is fixed with a base, a guide rail is fixed on the outer side of the first cylinder body, the base is fixed with the push rod, and the push rod moves along the guide rail.

Further, the push rod is connected with a first motor, and the push rod is pushed by the first motor.

Further, a controller is also included, electrically coupled to the first motor, for automatically controlling movement of the first motor.

Further, a one-way valve is arranged on the first pipeline.

Further, a pressure sensor is arranged on the second pipeline and is electrically connected with the controller.

Further, the middle end of the second pipeline is communicated with a second pipetting device, the second pipetting device comprises a second cylinder body, a second piston and a second motor, and the second motor pushes the second piston to move up and down in the second cylinder body.

Further, the detecting needle cleaning device further comprises:

the waste liquid bucket, the waste liquid bucket sets up the below of waiting to wash the bottom of detecting needle.

The utility model has the beneficial effects that:

through the push rod of first pipetting device, can promote the push rod and produce negative pressure or pressure reduction, then the washing liquid of washing liquid reservoir will flow into the cylinder body voluntarily, promotes the push rod again, and the washing liquid in the cylinder body will wash the inner wall of waiting abluent detection needle with higher pressure, very fast just can wash out the washing and finish, and the quantity of washing liquid is very little to can realize wasing the detection needle fast, and can reduce the technological effect of the quantity of washing liquid.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only 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 diagram of a detecting needle cleaning device according to embodiment 1.

Fig. 2 is a schematic structural view of a test needle cleaning device in embodiment 2.

The reference numerals in the figures are: 1-a cleaning liquid reservoir; 2-a first pipetting device; 3-a first pipe; 4-a second conduit; 5-a detection needle; 6-a waste liquid barrel; 7-a second pipetting device; 21-a first cylinder body, 22-a first piston; 23-pushing rod; 24-base; 25-a guide rail; 26-a first motor; 31-a one-way valve; 41-a pressure sensor; 71-a second cylinder; 72-a second piston; 73-a second motor.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1, a detector needle cleaning device includes a cleaning liquid reservoir 1, a first pipetting device 2, a first tube 3 and a second tube 4.

A cleaning liquid reservoir 1, which contains cleaning liquid. Since the detection needle of the coagulation analyzer is aimed at, the cleaning liquid of the coagulation analyzer can be selected as the cleaning liquid, and the cleaning liquid is commercially available. The coagulation analyzer itself is also provided with some cleaning fluid. The cleaning liquid reservoir may be filled with cleaning liquid or may be filled with a large portion of cleaning liquid.

A first pipetting device 2 comprising a first cylinder 21, a first piston 22 and a push rod 23, the cleaning liquid reservoir 1 being in communication with the cylinder 21 via a first conduit 3; the push rod 23 is fixedly connected with the first piston 22, and the first piston 22 is pushed to move up and down in the first cylinder 21 by the push rod 23. When the push rod 23 pushes the first piston 22 downward, the first piston 22 follows the downward movement, and the first cylinder 21 increases in volume and decreases in pressure. When the push rod 23 pushes the first piston 22 upward, the first piston 22 follows upward movement, and the first cylinder 23 decreases in volume and increases in pressure.

A second pipe 4, one end of the second pipe 4 is communicated with an opening at the top of a detection needle 5 to be cleaned; the other end of the second pipe 4 communicates with the first cylinder 23.

During operation, through the push rod of first pipetting device, can push down the push rod and produce negative pressure or pressure reduction, then the washing liquid of washing liquid accumulator will flow into the cylinder body voluntarily, upwards promote the push rod again, the washing liquid in the cylinder body will flow out under the higher pressure from the second pipeline to wash the inner wall of wasing the detection needle with higher pressure, just can wash out the washing soon and accomplish, and the quantity of washing liquid is few, thereby can realize quick washing detection needle, and can reduce the technological effect of the quantity of washing liquid.

In order to reduce the back flow, the first pipe 3 is preferably provided with a one-way valve 31. In this way, the cleaning liquid in the cleaning liquid reservoir can be moved into the first cylinder in one direction.

In order to reduce the height, it is preferable that the first piston 22 is fixed with a base 24, a guide rail 25 is fixed to the outside of the first cylinder 21, the base 24 fixes a push rod 23, and the push rod 23 moves along the guide rail 25. Therefore, the superposition height of the first cylinder body and the push rod can be avoided, the push rod can be conveniently moved along the guide rail, and the stability is improved.

As a preferred embodiment, the push rod 23 is connected to a first motor 26, and the push rod 23 is pushed by the first motor 26. In this way, the amount of cleaning liquid and the cleaning pressure can be controlled more precisely by the first motor.

As a further preferred embodiment, the detector needle cleaning device further comprises a controller (not shown) electrically connected to the first motor, the controller being configured to automatically control the movement of the first motor. This allows the controller to more accurately control the amount of up-down movement of the first motor.

As a preferred embodiment, the second pipe 4 is provided with a pressure sensor 41, which is electrically connected to the controller. The change in pressure is sensed by the pressure sensor to control the movement of the first motor.

As a preferred embodiment, the test needle cleaning device further includes: and a waste liquid barrel 6, wherein the waste liquid barrel 6 is arranged below the bottom of the detection needle 5 to be cleaned. The waste barrel is used for collecting the waste liquid of cleaning and then is treated independently.

Example 2

Referring to embodiment 1, on the basis of embodiment 1, referring to fig. 2, the middle end of the second pipe 4 is communicated with a second pipetting device 7, the second pipetting device 7 comprises a second cylinder 71, a second piston 72 and a second motor 73, and the second motor 73 pushes the second piston 72 to move up and down in the second cylinder 71.

The second pipetting device may act as a buffer and transition. In one of the working processes, the first motor moves downwards to drive the push rod to move downwards, then the first piston is driven to move downwards, the pressure in the cylinder body is reduced, and the cleaning liquid automatically flows into the first cylinder body from the cleaning liquid storage; then the pressure of the second cylinder body is reduced by the downward movement of the second motor, the cleaning liquid of the first cylinder body automatically flows into the second cylinder body, and the inner wall of the detection needle is washed and cleaned by the upward movement of the second motor.

It is worth to say that, the outer wall of detecting the needle is more convenient to wash, only need to wash the inner wall of more difficult fast and clean and just solved the problem of core.

The first, second, etc. are given by the order of description, and are not included in the order, and are not shown or suggested to be of relative importance. The corresponding components or parts are relatively independent, such as a first motor and a second motor.

In addition, the terms such as "upper" and "lower" used in the present specification are based on the description of the drawings, and are only for convenience of description, and are not intended to limit the scope of the utility model.

The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.

Claims (8)

1. A test needle cleaning device, comprising:

a cleaning liquid reservoir containing a cleaning liquid;

the first pipetting device comprises a first cylinder, a first piston and a push rod, and the cleaning liquid storage is communicated with the cylinder through a first pipeline; the push rod is fixedly connected with the first piston, and the first piston is pushed to move up and down in the first cylinder body through the push rod;

one end of the second pipeline is communicated with an opening at the top of the detection needle to be cleaned; the other end of the second pipeline is communicated with the first cylinder body.

2. The detector needle cleaning device according to claim 1, wherein the first piston is fixed with a base, a guide rail is fixed on the outer side of the first cylinder, the base is fixed with the push rod, and the push rod moves along the guide rail.

3. The detector needle cleaning device according to claim 1 or 2, wherein the push rod is connected to a first motor, and the push rod is pushed by the first motor.

4. The detector needle cleaning device of claim 3, further comprising a controller electrically coupled to the first motor for automatically controlling movement of the first motor.

5. The detector needle cleaning device of claim 1, wherein the first conduit is provided with a one-way valve.

6. The detector needle cleaning apparatus of claim 4, wherein a pressure sensor is disposed on the second conduit, the pressure sensor being electrically connected to the controller.

7. The detector needle cleaning device according to claim 1, wherein the middle end of the second pipeline is communicated with a second pipetting device, the second pipetting device comprises a second cylinder, a second piston and a second motor, and the second motor pushes the second piston to move up and down in the second cylinder.

8. The detector needle cleaning apparatus of claim 1, further comprising:

the waste liquid bucket, the waste liquid bucket sets up the below of waiting to wash the bottom of detecting needle.