CN217017686U

CN217017686U - Pipetting needle cleaning device and pipetting needle cleaning system

Info

Publication number: CN217017686U
Application number: CN202122960573.7U
Authority: CN
Inventors: 赵文强; 尹华忠
Original assignee: Shenzhen Shixin Medical Technology Co ltd
Current assignee: Shenzhen Shixin Medical Technology Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-07-22
Anticipated expiration: 2031-11-29

Abstract

The application provides a pipetting needle belt cleaning device includes: the end part of the cleaning pool body is provided with a mounting end; the cleaning head assembly is arranged in the mounting end in a matching way and is communicated with the cleaning pool body; and the sealing assembly is arranged between the cleaning pool body and the cleaning head assembly and is in interference fit with the cleaning pool body and the cleaning head assembly respectively. The utility model provides a body mouth gag washs pond body and washs the first subassembly mutually supported and connect through setting up, sets up the installation end that supplies to wash the installation of first subassembly on wasing the pond body, still is provided with interference fit's seal assembly between wasing pond body and wasing the first subassembly, has guaranteed the effective washing to the pipetting needle, prevents the loss of washing liquid, leakage and the loss of fluid pressure, has improved the stability of cleaning process.

Description

Pipetting needle cleaning device and pipetting needle cleaning system

Technical Field

The application belongs to the technical field of pipette needle cleaning, and more particularly relates to a pipette needle cleaning device and a pipette needle cleaning system.

Background

In the IVD in vitro diagnosis industry, when a sample or a reagent is added to a medical detection apparatus such as a chemiluminescence analyzer, a pipetting needle is usually used to perform sample adding and pipetting. During pipetting, other samples or reagents may adhere to the pipetting needle, thereby causing carryover in the entire system. In order to avoid the pollution of the sample or the reagent carried by the needle body to other samples or reagents and the failure of the test result, the liquid transferring needle needs to be thoroughly cleaned before the sample is added.

At present, a cleaning device is commonly used for cleaning the outer wall of the liquid-transferring needle body, and the method is to clean the outer wall of the liquid-transferring needle by using a cleaning solution with large liquid quantity and slow flow rate.

The existing pipetting needle is not obvious in cleaning effect, cannot be effectively cleaned, excessively wastes cleaning liquid, and prolongs testing time, so that the cost of detection and analysis is increased.

Disclosure of Invention

An object of the embodiment of the application is to provide a pipetting needle belt cleaning device and pipetting needle cleaning system to the pipetting needle cleaning performance who exists is not showing in solving prior art, is difficult to reach effectual washing, and causes excessive extravagant washing liquid, and test time prolongs, thereby makes the problem of detection and analysis cost increase.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: provided is a pipette needle cleaning device, including:

the end part of the cleaning pool body is provided with a mounting end;

the cleaning head assembly is arranged in the mounting end in a matching manner, and is communicated with the cleaning pool body;

and the sealing assembly is arranged between the cleaning pool body and the cleaning head assembly and is in interference fit with the cleaning pool body and the cleaning head assembly respectively.

Optionally, the cleaning head assembly comprises a cleaning head and a fixed seat, the cleaning head and the fixed seat are integrally arranged, a first end surface is arranged on one side of the cleaning head facing the cleaning pool body, a second end surface is arranged on one side of the fixed seat facing the cleaning pool body, and the first end surface and the second end surface form a stepped surface;

the sealing assembly comprises a first sealing element and a second sealing element, and the first sealing element and the second sealing element are respectively in fit sealing with the first end face and the second end face.

Optionally, a first flow channel is arranged in the cleaning pool body, a second flow channel is arranged in the cleaning head assembly, and when the cleaning head assembly is installed and connected with the cleaning pool body, the first flow channel is communicated with the second flow channel, and the first flow channel and the second flow channel are located on the same straight line.

Optionally, a third flow channel arranged obliquely is formed in the side wall of the cleaning head assembly, and the third flow channel is communicated with the side wall and the second flow channel.

Optionally, a liquid inlet hole is formed in the cleaning pool body at a position corresponding to the third flow channel, and the liquid inlet hole is communicated with the third flow channel.

Optionally, an annular runner groove is formed in the outer wall of the cleaning head, and the runner groove is communicated with the liquid inlet hole and the third runner.

Optionally, a plurality of tangent planes are arranged on the side wall of the fixing seat.

Optionally, the cleaning tank body and the cleaning head assembly are threadedly connected.

Optionally, one end of the second flow channel, which is away from the first flow channel, is provided with a trumpet-shaped opening.

A liquid-transferring needle cleaning system comprises a liquid discharging device, a liquid inlet device and the liquid-transferring needle cleaning device.

The application provides a pipetting needle belt cleaning device's beneficial effect lies in: compared with the prior art, the pipetting needle cleaning device provided by the application is characterized in that the pool body and the cleaning head assembly are matched and connected with each other through the arrangement, the mounting end for mounting the cleaning head assembly is arranged on the cleaning pool body, the sealing assembly in interference fit is further arranged between the cleaning pool body and the cleaning head assembly, the effective cleaning of the pipetting needle is guaranteed, the loss of cleaning liquid, the leakage and the loss of liquid pressure are prevented, and the stability of the cleaning process is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic structural view of a pipette needle cleaning device provided in an embodiment of the present application;

FIG. 2 is a first schematic structural view of a cleaning head assembly of the pipette needle cleaning device according to the embodiment of the present application;

FIG. 3 is a second schematic structural view of a cleaning head assembly of the pipette needle cleaning device according to the embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of a cleaning basin body in a pipette needle cleaning device according to an embodiment of the present application.

Wherein, in the figures, the various reference numbers:

1-a pipette needle cleaning device; 2-a liquid transfer needle; 10-cleaning the tank body; 11-a first flow channel; 12-a mounting end; 121-a second side; 13-liquid inlet hole; 20-a cleaning head assembly; 201-a first end face; 202-a first side; 21-a second flow channel; 211-an opening; 22-a cleaning head; 23-a fixed seat; 231-a second end face; 232-cutting; 24-a head; 241-a third end face; 242-a third side; 25-a third flow channel; 26-runner channels; 30-a sealing assembly; 31-a first seal; 32-second seal.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the utility model. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it should be noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection through intervening media, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The terms "first," "second," and "third" (if any) in the description and claims of this application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or described herein.

Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or maintenance tool that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or maintenance tool.

Referring to fig. 1-4 together, a pipette needle cleaning device provided in an embodiment of the present application will now be described. The embodiment of the application provides a pipette needle cleaning device 1, which comprises a cleaning pool body 10 and a cleaning head assembly 20, wherein a first flow channel 11 which is arranged in a through manner is formed in the cleaning pool body 10, namely the first flow channel 11 penetrates through two opposite end faces of the cleaning pool body 10; on one of the end faces is provided a mounting end 12, the mounting end 12 being adapted to cooperate with a cleaning head assembly 20 for mounting. It should be noted that mounting end 12 is in communication with first flow channel 11, that is, mounting end 12 is located on one of two end surfaces where first flow channel 11 is in communication, and cleaning head assembly 20 is mounted by mounting end 12, and cleaning pool body 10 and cleaning head assembly 20 can be connected after the mounting is completed. Wherein, set up the second runner 21 that runs through the setting in cleaning head subassembly 20, corresponding, second runner 21 runs through the setting of two terminal surfaces of cleaning head subassembly 20, and after connecting washing pond body 10 and cleaning head subassembly 20, first runner 11 intercommunication second runner 21. It will be appreciated that first flow passage 11 communicates between mounting end 12 and the opposite side of cleaning cell body 10 from mounting end 12, while second flow passage 21 of cleaning head assembly 20 is provided therethrough. When the cleaning head assembly 20 is installed in the installation end 12, one end of the second flow channel 21 on the cleaning head assembly 20 is communicated with the installation end 12, that is, the second flow channel 21 is communicated with the first flow channel 11 in the installation end 12, and water flowing out of the second flow channel 21 is guided into the first flow channel 11 through the installation end 12, so that the flowing process of water is completed. The first flow channel 11 and the second flow channel 21 are ensured to be communicated with each other in principle, and the style of the first flow channel 11 and the second flow channel 21 is not limited. Furthermore, in order to ensure that resistance is not caused to water flow when water flow impacts, the first flow channel 11 and the second flow channel 21 are generally arranged to be located on the same straight line, so that water flow directly enters the first flow channel 11 from the second flow channel 21, water flow resistance is reduced, and cleaning effect is ensured.

It should be noted that the diameters of the first flow channel 11 and the second flow channel 21 are generally set larger than the diameter of the needle body of the pipette needle 2, so as to facilitate the insertion of the pipette needle 2 from the second flow channel 21. It should be noted that, in order to ensure that the pipetting needle 2 can smoothly enter the second flow channel 21, a trumpet-shaped opening 211 is usually further formed at an end of the second flow channel 21 away from the first flow channel 11, and a diameter of an opening of the opening 211 located on an outer wall of the cleaning head assembly 20 is larger than that of the second flow channel 21, so that the pipetting needle 2 can be directly placed into the second flow channel 21 when being placed in the range of the opening 211. Wherein, the pipetting needle 2 usually extends through the end of the second flow channel 21 away from the first flow channel 11, and extends from the end of the second flow channel 21 to the second end, so as to approach the first flow channel 11. In this embodiment, the water flow can enter from one end of the second flow channel 21, move to the end along the upper end of the pipette needle 2, clean the outer wall of the pipette needle 2, and then enter the first flow channel 11. Wherein, wash pond body 10 and cleaning head subassembly 20 and can pass through threaded connection, also can be through being provided with the mutual joint of joint spare. In this embodiment, optionally, a threaded connection is provided between cleaning basin body 10 and cleaning head assembly 20. In the process, because the liquid-transferring needle cleaning device is usually filled with high-pressure liquid so as to ensure the cleaning effect, the liquid-transferring needle cleaning device is usually required to be sealed and waterproof between the cleaning pool body 10 and the cleaning head assembly 20. For this reason, in the present embodiment, a sealing assembly 30 is further included, the sealing assembly 30 is disposed between the cleaning pool body 10 and the cleaning head assembly 20, and the sealing assembly 30 is interference-fitted with the cleaning pool body 10 and the cleaning head assembly 20, respectively. It should be noted that the sealing assembly 30 may be a sealing member such as a sealing tape wound around the outer wall of the cleaning head assembly, or may be a sealing member such as a silicone ring. In this embodiment, a sealing ring is typically used to seal between cleaning basin body 10 and cleaning head assembly 20.

Illustratively, taking an end surface where the cleaning tank body 10 is attached to the cleaning head assembly 20 as an example, the end surface of the cleaning head assembly 20 is a first end surface 201, a side wall where the cleaning head assembly 20 is connected to the first end surface 201 is a first side surface 202, and a sealing assembly 30 is arranged at a joint of the first side surface 202 and the first end surface 201, where the first end surface 201 and the sealing assembly 30 are pressed and sealed, that is, the sealing assembly 30 is arranged between the first end surface 201 and an inner wall of the first flow channel 11 of the cleaning tank body 10, and the sealing assembly 30 is pressed and fixed between the first end surface 201 and the inner wall of the first flow channel 11, so as to ensure primary sealing performance; additionally, first side 202 is interference fit with the outer race of seal assembly 30. Taking the example that the sealing assembly 30 comprises the first sealing member 31, wherein the first sealing member 31 is a sealing ring, and the sealing ring is an annular sealing member with a hollow opening. Wherein, the hollow opening of the sealing ring corresponds to the first flow channel 11, thereby the water flow can be smoothly passed; in addition, the both sides of sealing ring respectively with the inner wall laminating of first terminal surface 201 and installation end 12, be provided with on the inner wall of installation end 12 with sealing ring assorted annular groove, when installing the sealing ring to between the inner wall of first terminal surface 201 and installation end 12, partial sealing ring embedding is in the annular groove, another partial sealing ring that exposes outside the annular groove directly contacts with first terminal surface 201, and produce partial deformation under the squeezing action, the leakproofness between sealing ring and the annular groove has been improved, thereby sealing performance has further been guaranteed.

In this embodiment, in order to ensure the stability of the connection between the cleaning tank body 10 and the cleaning head assembly 20, and ensure that the cleaning head assembly 20 can be embedded in the mounting end 12 without being mounted over the cleaning head, optionally, the cleaning head assembly 20 includes a cleaning head 22 and a fixing seat 23, the cleaning head 22 and the fixing seat 23 are integrally arranged, one side of the cleaning head 22 facing the cleaning tank body 10 has a first end surface 201, one side of the fixing seat 23 facing the cleaning tank body 10 has a second end surface 231, and the first end surface 201 and the second end surface 231 form a stepped surface; the seal assembly 30 includes a first seal 31 and a second seal 32, the first seal 31 and the second seal 32 being in sealing abutment with the first end face 201 and the second end face 231, respectively.

It will be appreciated that cleaning head assembly 20 is divided into two parts, a cleaning head 22 and a fixed seat 23, wherein the diameter of fixed seat 23 is larger than that of cleaning head 22, so as to ensure that cleaning head 22 and mounting end 12 are mutually matched, and the edge of fixed seat 23 is abutted against the peripheral side of mounting end 12, thereby completing the fixation. Wherein, one side of the fixed seat 23 facing the cleaning pool body 10 is provided with a second end surface 231, the second end surface 231 and the first end surface 201 form a step surface, the first end surface 201 positioned at the front part of the cleaning head component 20 extends into the mounting end 12, and the second end surface 231 is abutted against the peripheral side (i.e. the second side surface 121) of the mounting end 12. In order to further improve the sealing effect, a second sealing element 32 is further disposed between the second end surface 231 and the mounting end 12, and correspondingly, two surfaces of the second sealing element 32 respectively abut against the second end surface 231 and the peripheral side (i.e., the second side surface 121) of the mounting end 12, and a circular groove is correspondingly disposed at a position on the mounting end 12 corresponding to the second end surface 231, and the circular groove corresponds to the second sealing element 32. In addition, it should be noted that the central opening of the second sealing member 32 is adapted to facilitate the passage of the cleaning head 22, and the side wall of the cleaning head 22 is adapted to fit the central opening of the second sealing member 32. In order to further improve the sealing performance, optionally, the middle opening of the second sealing element 32 is in interference fit with the side wall (i.e., the first side surface 202) of the cleaning head 22, that is, the outer diameter of the cleaning head 22 is slightly larger than the inner diameter of the middle opening of the second sealing element 32, so that the second sealing element 32 is sleeved outside the side wall (i.e., the first side surface 202) of the cleaning head 22, and the interference fit between the two improves the sealing performance.

It should be noted that, when connecting cleaning pool body 10 and cleaning head subassembly 20, cleaning pool body 10 and cleaning head subassembly 20 are threaded connection, in order to guarantee cleaning head subassembly 20 and cleaning pool body 10 time both relative pivoted stability, optionally, be provided with a plurality of tangent planes 232 on the lateral wall of fixing base 23, each tangent plane 232 constitutes the pattern of screw head, when needs rotate cleaning head subassembly 20 and install or dismantle, can accomplish the rotation work to cleaning head subassembly 20 through arbitrary two tangent planes 232 of extracting tool (like spanner etc.) laminating on fixing base 23.

It should be noted that the cleaning head assembly 20 may further include a head 24 disposed at the front end of the cleaning head, and correspondingly, the head 24 is also formed with a third end surface 241, and the side wall (i.e., the third side surface 242) of the head 24 is in interference fit with the hollow opening of the first sealing member 31. The sealing effect is the same as the above embodiment, and is not described herein again.

In another embodiment provided by the present application, the pipette tip is typically cleaned with a focus while the pipette is being cleaned. If water enters from the opening of the second flow channel 21, the tip of the pipetting needle cannot be cleaned intensively. For this reason, in the present embodiment, a third flow passage 25 is further formed on the side wall of the cleaning head assembly 20, and the third flow passage 25 communicates the side wall with the second flow passage 21. It should be noted that the third flow passage 25 is usually provided on the side wall of the cleaning head 22, i.e., the third flow passage 25 communicates the first side 202 and the second flow passage 21. The diameter of the third flow path 25 is normally set to be smaller, the cleaning solution enters the second flow path 21 from the third flow path 25, and the end of the pipetting needle is located at the second flow path 21 and corresponds to the third flow path 25, so that the intensive cleaning of the end of the pipetting needle is completed. The smaller the diameter of the third flow passage 25 is, the faster the water flow speed of the third flow passage in unit time is, the usage amount of the cleaning liquid is saved to a certain extent, the flow speed of the cleaning liquid is increased, the liquid pressure is increased, and the effectiveness of cleaning is ensured. In addition, the third flow channel 25 is usually disposed obliquely, and the inclination angle is usually set to be higher at one side of the outer wall, so that the cleaning liquid can be directly ejected obliquely downwards when ejected, and directly contacts with the end of the liquid transferring needle, and the flow rate of the cleaning liquid is further increased.

In addition, it should be noted that, in order to ensure that the cleaning solution can smoothly enter the third flow channel 25, optionally, a liquid inlet hole 13 is formed in the cleaning tank body 10 at a position corresponding to the third flow channel 25, the liquid inlet hole 13 is communicated with the third flow channel 25, and the outer side of the liquid inlet hole 13 is usually connected to a liquid inlet device, so as to ensure the supply of the cleaning solution.

Correspondingly, in order to ensure the flow velocity of the third flow channel 25, an annular flow channel groove 26 is optionally formed on the outer wall of the cleaning head 22, and the flow channel groove 26 communicates the liquid inlet hole with the third flow channel 25. The cleaning liquid conveyed by the liquid inlet device enters the flow channel groove 26 through the liquid inlet hole 13, and when the space of the flow channel groove 26 is filled with the cleaning liquid, the cleaning liquid enters the second flow channel 21 through the third flow channel 25, so that the transportation of the cleaning liquid is completed.

The embodiment of the utility model also provides a liquid-transferring needle cleaning system which comprises a liquid drainage device, a liquid inlet device and the liquid-transferring needle cleaning device 1. The liquid drainage device is arranged on the lower side of the liquid transferring needle cleaning device 1, is communicated with the tail end of the first flow channel 11 and is used for guiding cleaning liquid wastewater discharged by the first flow channel 11; the liquid inlet device is communicated with a liquid inlet hole 13 in the liquid transferring needle cleaning device 1 and is used for inputting cleaning liquid into the liquid inlet hole 13.

It should be noted that the structure of the pipette needle cleaning device in this embodiment is the same as that of the pipette needle cleaning device in the above embodiment, and the effect is the same, which is not described in this embodiment.

The present application is intended to cover various modifications, equivalent arrangements, and adaptations of the present application without departing from the spirit and scope of the present application.

Claims

1. A pipette needle cleaning device, comprising:

the end part of the cleaning pool body is provided with a mounting end;

the cleaning head assembly is arranged in the mounting end in a matching manner and is communicated with the cleaning pool body;

2. The pipette needle cleaning device of claim 1 wherein the cleaning head assembly comprises a cleaning head and a fixed seat, the cleaning head and the fixed seat being integrally disposed, the cleaning head having a first end surface on a side facing the cleaning cell body, the fixed seat having a second end surface on a side facing the cleaning cell body, the first end surface and the second end surface forming a stepped surface;

3. The pipette needle cleaning device of claim 2 wherein the cleaning basin body has a first flow channel disposed therein, the cleaning head assembly has a second flow channel disposed therein, the first flow channel communicates with the second flow channel when the cleaning head assembly is mounted on the cleaning basin body, and the first flow channel and the second flow channel are located on the same straight line.

4. The pipette needle washing device of claim 3 wherein a third flow channel is formed in a side wall of the washing head assembly, the third flow channel being in communication with the side wall and the second flow channel.

5. The pipette needle cleaning device of claim 4, wherein a liquid inlet hole is formed in the cleaning tank body at a position corresponding to the third flow channel, and the liquid inlet hole is communicated with the third flow channel.

6. The pipette needle cleaning device of claim 5 wherein the cleaning head has an annular channel formed in an outer wall thereof, the channel communicating the liquid inlet hole with the third channel.

7. The pipette needle cleaning device of claim 2 wherein the sidewall of the holder has a plurality of cut surfaces.

8. The pipette needle cleaning device of claim 1 wherein the cleaning cell body and the cleaning head assembly are threadably connected.

9. The pipette needle washing device of claim 3, wherein the second flow channel has a flared opening at an end thereof facing away from the first flow channel.

10. A pipetting needle cleaning system comprising a liquid discharge device, a liquid inlet device and a pipetting needle cleaning device according to any one of claims 1 to 9.