CN212597637U

CN212597637U - Sampling needle cleaning swab capable of being added with diluent

Info

Publication number: CN212597637U
Application number: CN202020617146.1U
Authority: CN
Inventors: 刘金昔; 牛文超; 佟玲
Original assignee: Changchun Bulaze Medical Technology Co ltd
Current assignee: Changchun Bulaze Medical Technology Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2021-02-26
Anticipated expiration: 2030-04-22

Abstract

The invention discloses a sampling needle cleaning swab capable of adding diluent, which comprises a swab body and a diluent adding device, wherein the swab body is provided with a cavity which axially penetrates through the center, the cavity is connected with a liquid inlet and a liquid outlet, the swab body is provided with a second cavity, the second cavity is connected with a diluent water inlet and the diluent adding device, and the diluent adding device is a stainless steel pipe with the roughness of Ra0.2 on the inner wall, is in interference fit with the second cavity and is communicated with the diluent liquid inlet. Therefore, the swab not only can realize the effect of cleaning the sampling needle, but also can add reagents such as diluent and the like through the diluent adding device, reduces the use of part of liquid path control elements, can effectively control the cost and reduce the complexity of a liquid path program.

Description

Sampling needle cleaning swab capable of being added with diluent

Technical Field

The invention relates to the technical field of medical detection equipment, in particular to a sampling needle swab for a blood analysis instrument.

Background

In medical science check out test set technical field, especially blood analysis instrument, the sampling needle absorbs often can leave remaining blood sample at sampling needle inner wall, outer wall after the sample, if not in time clear up then can pollute blood sample of organizing down, in order to reach the requirement of wasing the sampling needle, inject into liquid back rethread swab upper end liquid outlet through swab lower extreme inlet and siphoned away the waste liquid usually to realize the washing of sampling needle. After a sample is absorbed by a sampling needle, the sample needs to be distributed to a corresponding detection assembly, a diluent is added to dilute the sample in a certain proportion so as to meet the test condition, a diluent liquid outlet is generally added above the corresponding detection assembly, the liquid outlet is generally controlled by a special liquid path and liquid path control unit, and the liquid path and liquid path control unit is only used for controlling the addition of the diluent, so that higher cost and more complex liquid path program control can be generated.

Disclosure of Invention

The invention mainly solves the problems of the prior art and provides a sampling needle cleaning swab which is simple to control and low in manufacturing cost and can be added with diluent.

The invention comprises a swab body and a diluent adding device.

The swab for cleaning the sampling needle, which can be added with diluent, is characterized in that: the liquid inlet and the liquid outlet are arranged on the same side of the swab and are connected with the cavity penetrating through the center.

The swab for cleaning the sampling needle, which can be added with diluent, is characterized in that: the diluent adds the device and is a external diameter and is 2mm, and the internal diameter is 1.5mm, and inside roughness Ra is 0.2's steel pipe, is connected with the second cavity through interference fit.

The swab for cleaning the sampling needle, which can be added with diluent, is characterized in that: the diluent adding device is corrosion-resistant and does not react with reagents such as diluent.

The swab for cleaning the sampling needle, which can be added with diluent, is characterized in that: the second cavity and the cavity which axially penetrates through the center are parallel to each other, the upper end of the second cavity is a closed cavity, and the side face of the second cavity is connected with a diluent liquid inlet hole.

The swab for cleaning the sampling needle, which can be added with diluent, is characterized in that: the axis of the liquid inlet of the diluent is perpendicular to the axis of the liquid inlet and the axis of the liquid outlet in a non-coplanar manner, so that the liquid path connection is more reasonable.

The invention has the advantages that the diluent injection channel is designed on the sampling needle swab, 1) the sampling needle swab is usually arranged on the sampling needle assembly, and the sampling needle assembly can move above a plurality of detection assemblies according to requirements, so that the reagent injection requirements of a plurality of groups of detection assemblies can be met by only arranging one group of injection channel; 2) the sampling needle swab is provided with a liquid inlet and a liquid outlet, and the cleaning requirement of the sampling needle is met, so that a diluent filling channel is added on the side of the swab, a reagent flows out from the reagent filling channel along a reagent filling device, and the purpose of reagent filling is achieved. The invention realizes reagent filling of a plurality of groups of detection components under the condition of only adding one group of reagent filling liquid path, greatly saves the cost of the liquid path and has certain simplification function on the control of the liquid path program.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 and 2 are schematic sectional views of the swab of the present invention.

Reference numerals:

1-a liquid outlet 2-a liquid inlet 3-a cavity 4-a diluent inlet 5-a second cavity 6-a diluent adding device.

Detailed Description

The present invention provides a sampling needle cleaning swab to which a diluent can be added, and the present invention will be described in further detail below in order to make the object, technical solution, and effect of the present invention clearer and clearer. The preferred embodiments described below are intended to be examples only, and one skilled in the art will appreciate that the present invention provides a sampling needle cleaning swab that includes a body to which a diluent may be added, to other obvious variations.

As shown in fig. 1 and 2, the swab for cleaning a sampling needle, to which a diluent can be added, includes a body and a diluent adding device 6, wherein the body includes a liquid inlet 2, a liquid outlet 1, a cavity 3 penetrating through the center, a diluent inlet 4, and a second cavity 5.

When the sampling needle needs to be cleaned, reasonable negative pressure is applied to the liquid outlet 1, so that a liquid channel in the body forms a negative pressure cavity, liquid enters the body through the liquid inlet 2, and the body is removed through the liquid outlet 1 under the action of the negative pressure, and the effect of cleaning the sampling needle is achieved.

The side opening of the second cavity 5 is connected with a diluent inlet 4, the axis of the second cavity is parallel to the axis of the cavity 3 penetrating through the center and has a certain distance, and the axis of the diluent inlet 4 is perpendicular to the axes of the inlet 2 and the outlet 1 in a non-coplanar manner. The opening part at the bottom end of the second cavity is in interference fit with the diluent adding device 6, so that the sealing property of the joint of the second cavity 5 and the diluent adding device 6 can be ensured.

As shown in fig. 2, when the swab moves with the sampling needle to the position above each test module to which a diluent is to be added, the diluent is driven into the diluent inlet hole 4 by a set of special liquid paths and liquid path control elements, and then flows into the liquid to be tested in each module along the diluent adding device 6 by gravity.

The key point of this embodiment is that the reagents can be added to the required components by the diluent adding device as the probe moves.

In addition, the following rationalization design is further performed in the present embodiment: the wall thickness of the diluent adding device is very thin, and the diluent adding device is connected with the second cavity in an interference fit mode, so that the sealing effect between the diluent adding device and the swab is favorably ensured, and other substances cannot be added for connection of the diluent adding device, so that the components of the diluent are not influenced.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A sampling needle cleaning swab capable of being added with diluent is characterized in that: including swab main part and diluent interpolation device, the main part includes inlet, liquid outlet and an axial cavity that runs through the center, the cavity is connected with inlet and liquid outlet through the side opening, diluent interpolation device and swab main part second cavity interference fit.

2. A sampling needle cleaning swab to which a diluent can be added according to claim 1, wherein: the liquid inlet and the liquid outlet are arranged on the same side of the swab and are connected with the cavity penetrating through the center.

3. A sampling needle cleaning swab to which a diluent can be added according to claim 2, wherein: the cavity is divided into three sections, the inner diameters of the three sections are sequentially increased, the inner diameter of the upper section of the cavity is matched with the inner diameter of the sampling needle to play a role in limiting the position of the sampling needle, the middle section of the cavity is connected with the liquid outlet hole, and the lower section of the cavity is connected with the liquid inlet.

4. A sampling needle cleaning swab to which a diluent can be added according to claim 1, wherein: the diluent adding device is a steel pipe with the outer diameter of 2mm, the inner diameter of 1.5mm and the internal roughness of Ra0.2, and is connected with the second cavity through interference fit.

5. A sampling needle cleaning swab to which a diluent can be added according to claim 1, wherein: the diluent cleaning device is corrosion-resistant and does not react with the diluent.

6. A sampling needle cleaning swab to which a diluent can be added according to claim 1, wherein: the second cavity is parallel to the axial line of the cavity which axially penetrates through the center, the upper end of the second cavity is a closed cavity, and the side surface of the second cavity is provided with a hole which is connected with the diluent inlet.

7. A sampling needle cleaning swab to which a diluent can be added according to claim 5, wherein: the axis of the liquid inlet of the diluent is in a non-coplanar vertical relationship with the axis of the liquid inlet and the axis of the liquid outlet.