CN110882008A

CN110882008A - Liquid collecting device

Info

Publication number: CN110882008A
Application number: CN201811047518.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Maybe Polymer Material (ningbo) Co Ltd
Current assignee: Maybe Polymer Material (ningbo) Co Ltd
Priority date: 2018-09-09
Filing date: 2018-09-09
Publication date: 2020-03-17
Also published as: WO2020048096A1

Abstract

The invention discloses a liquid collecting device, which comprises a handle, an indicating part and an absorber, wherein the handle is provided with a handle; the indicating component comprises an indicating core body and a fiber body, wherein the outer peripheral surface of the indicating core body is provided with a mark part, and the fiber body completely or partially covers the mark part of the indicating core body; when the fibrous body is in an opaque state when dry, the color of the indicating core is difficult to see through the fibrous body; the transparency increases when the fibrous body absorbs and is wetted by the liquid sample, indicating that the core develops color from the fibrous body. This liquid collection system has the instruction function of discolouing, and convenient to use person judges that liquid sample is absorbed by the absorber, or whether convenient to use person judges the absorber and has absorbed sufficient liquid, convenient and fast.

Description

Liquid collecting device

Technical Field

The invention relates to the field of medical inspection and drug detection, in particular to a liquid collection device.

Background

In the field of medical testing and drug testing, the collection of liquid samples to be analyzed, such as urine, saliva, etc., is a link in the testing process. One commonly used method of acquiring liquid is to place a liquid absorbent body at the liquid acquisition site of the person to be acquired, take out the liquid absorbent body after a certain period of time, and then squeeze out or elute the liquid in a special device for subsequent testing. For ease of handling, the liquid absorbent body 2 is typically secured to a handle 1 by means of an adhesive, as shown in figure 1. When taking a liquid sample with such a device, it is often difficult to judge whether the absorbent body has absorbed sufficient liquid, and even if a certain acquisition time is specified, the amount of liquid acquired within the specified time varies greatly due to differences between individuals. For example, in the saliva sampling process, the difference of the saliva amount absorbed by the absorber in the same time is large because the saliva secretion of different individuals is large. Therefore, the liquid collecting device capable of indicating the liquid content in the absorber in the liquid sample collecting process has good practical significance. The current common method is to add dye to a certain part of the collecting device, and the dye moves along with the penetration of liquid in the sample collecting process, so as to judge the liquid content in the absorber. This method often gives the user some unsafe risk, such as that during the process of collecting saliva, if the user presses-relaxes the absorbent body several times, as shown in fig. 2, the dye in the indicator piece 3 will permeate back into the absorbent body and enter the user's mouth. The addition of dyes may also interfere with the detection of target components in the sample.

In addition, current saliva collection system structure is comparatively complicated, and manufacturing cost, use cost are high, like a saliva collection system among the prior art, belongs to saliva collection technical field. The invention comprises an upper cover, a lower cover and a cotton swab rod; one end of the cotton swab stick is provided with a boss, and a cotton swab head is arranged on the boss; a test strip is arranged between the upper cover and the lower cover; the upper cover is provided with a window for reading the test strip result, and one end of the upper cover is provided with a placing groove for accommodating a cotton swab head; the inner wall of the placing groove is provided with a clamping ring matched with the cotton swab boss; a liquid flow hole is formed in the bottom of the placing groove, and one end of the test strip is arranged at the lower end of the liquid flow hole; the upper cover and the lower cover are provided with matched contact pins and insertion rings, and the upper cover and the lower cover are connected through the contact pins and the insertion rings; and the upper cover and the lower cover are provided with reinforcing ribs, fixing ribs and supporting ribs. The saliva collecting device is complex in structure and inconvenient to operate.

Disclosure of Invention

In view of the above-mentioned drawbacks and disadvantages of the prior art, the present invention provides a liquid collection device, which can quickly and obviously indicate whether the collection of a liquid sample is completed, and does not interfere with the detection of the liquid sample.

In order to solve the problems, the invention discloses a liquid collecting device which comprises a handle, an absorber fixedly connected with the handle and an indicating component assembled on the handle and/or the absorber, wherein the indicating component comprises a fibrous body and an indicating core body, a mark part is arranged on the outer peripheral surface of the indicating core body, the fibrous body completely or partially covers the mark part of the indicating core body, the fibrous body is communicated with the absorber, and when the absorbent body transmits collected liquid to the fibrous body, the transparency of the fibrous body is improved along with the increase of the absorbed liquid amount.

Further, the fibrous body contains at least one of polyethylene, polypropylene, or polyolefin.

Further, the indication core body is made of a liquid guide material.

Further, the identification part is color, pattern or character.

Further, a baffle is arranged at the end part of the handle close to the absorber.

Further, a part of the handle close to the absorber is provided with an inner cavity extending in the axial direction of the handle, the indicating member is inserted into the inner cavity, the peripheral wall of the inner cavity corresponding to the indicating member is made of a transparent material, and the fibrous body of the indicating member is communicated with the absorber.

Further, the absorbent body is provided with insertion holes into which the fibrous body extends, and the fibrous body can be pressed into the cavity when the absorbent body is compressed. .

Further, a part of the handle close to the absorber is provided with a partially closed inner cavity extending in the axial direction of the handle, the absorber is provided with an insertion hole, one part of the indicating core is inserted into the inner cavity, the other part of the indicating core extends and is inserted into the insertion hole, the indicating core can be pressed into the inner cavity when the absorber is compressed, and the absorber simultaneously serves as the fibrous body.

Further, the absorber is provided with an insertion hole penetrating through the absorber, the indication core extends and penetrates through the insertion hole, and then a fixing plate is arranged at the end part, so that the indication core can be pressed into the inner cavity when the absorber is compressed.

Furthermore, the absorber is provided with a jack penetrating through the absorber, one end of the indicating core body is fixedly connected with the handle, the other end of the indicating core body is provided with a segment-shaped fixing plate, the fixing plate penetrates through the jack and supports the absorber, and the diameter of the maximum cross section of the segment-shaped fixing plate is larger than that of the jack (21) and smaller than that of the handle (1).

As mentioned above, the liquid collecting device provided by the invention has the advantages of simple structure and high connection reliability, and can quickly and obviously indicate whether the liquid sample to be detected is collected or not, and meanwhile, the detection of the liquid sample is not interfered.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to clearly understand the technical means of the present invention and to implement the technical means according to the content of the description, the following detailed description of the patent is given by the preferred embodiments of the present invention with reference to the accompanying drawings.

Drawings

The invention will now be described with reference to the accompanying drawings.

FIG. 1 is a schematic view of a fluid collection device according to one prior art prior to fluid collection;

FIG. 2 is a schematic structural view of the fluid collection device of FIG. 1 after fluid collection;

FIG. 3 is a schematic structural view of a liquid collection device according to a first embodiment of the present invention;

FIG. 4 is a longitudinal section through the cylindrical body of the indicator piece 3 of FIG. 3;

fig. 5 is a cross-sectional view of the indicator piece 3 of fig. 3 in the form of a cylinder;

FIG. 6 is a longitudinal sectional view of the indicating member 3 of FIG. 3 in the form of a rectangular parallelepiped;

FIG. 7 is a cross-sectional view of the indicator piece 3 of FIG. 3 in the form of a rectangular parallelepiped;

FIG. 8 is a schematic structural view of a liquid collecting apparatus according to a second embodiment of the present invention;

FIG. 9 is a schematic structural view of a liquid collection device according to a third embodiment of the present invention;

FIG. 10 is a cross-sectional view taken at A-A of FIG. 9;

fig. 11 is a schematic structural view of a liquid collecting apparatus according to a fourth embodiment of the present invention.

Fig. 12 is a schematic structural view of a liquid collecting apparatus according to a fifth embodiment of the present invention.

Fig. 13 is a schematic structural view of a liquid collection container which is used in cooperation with a liquid collection device according to a fifth embodiment of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.

Unless otherwise defined, terms used herein, including technical and scientific terms, have the ordinary meaning as understood by those skilled in the art. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.

In the present invention, the upper, lower, left and right in fig. 1 are regarded as the upper, lower, left and right of the liquid collecting device described in this specification.

As shown in fig. 3 to 12, the present invention provides a liquid collecting device, which comprises a handle 1, an absorbent body 2 fixedly connected with the handle 1, and an indicating member 3 assembled on the handle 1 and/or the absorbent body 2, wherein the indicating member 3 comprises a fibrous body 31 and an indicating core 32, a mark part is arranged on the outer peripheral surface of the indicating core 32, the fibrous body 31 wholly or partially covers the mark part of the indicating core 32, the fibrous body 31 is communicated with the absorbent body 2, and when the absorbent body 2 transmits collected liquid to the fibrous body 31, the transparency of the fibrous body 31 is improved along with the increase of the absorbed liquid amount.

The fibrous body 31 is low in transparency or in an opaque state before liquid collection, the mark part of the indicating core 32 is shielded, the mark part of the indicating core 32 cannot be observed through the fibrous body 31, after the absorbent body 2 collects the liquid, the liquid absorbed by the absorbent body 2 can be transferred to the fibrous body 31 because the absorbent body 2 is communicated with the fibrous body 31, the transparency of the fibrous body 31 is improved along with the increase of the absorbed liquid amount, when the fibrous body 31 is completely soaked by the liquid, the fibrous body 31 is almost in a transparent state, and the mark part arranged on the outer peripheral surface of the indicating core 32 can be clearly observed through the soaked fibrous body 31.

< absorbent body >

The absorbent body 2 is used for absorbing the liquid sample, extruding the liquid sample after the completion of the assay, and carrying out subsequent assay analysis, and in the invention, the material of the absorbent body is preferably porous material, such as sponge or bonded fiber, and the material density is preferably 0.04-0.12g/cm³Has certain elasticity and is convenient to extrude.

< fibrous body >

The fibrous body 31 is made of bicomponent filaments or staple fibers of a sheath-core structure by bonding. The skin layer of the bicomponent fiber is at least one of polyethylene, polypropylene or polyolefin.

The core layer in the bicomponent fiber can be polyethylene, polypropylene, polyester, nylon and the like. When the bicomponent fiber is a filament, the fiber body 31 has a faster liquid conduction speed, which is advantageous for shortening the color development time. When the bicomponent fiber is a staple fiber, since the staple fiber is randomly stacked in the fiber body 31, the fiber body 31 can better shield the mark portion of the indicating core 32 under the condition of the same thickness, thereby improving the contrast of the change of the definition of the mark portion before and after the fiber body 31 is soaked. In order to make the fibrous body 31 suitable for in vitro diagnostic device applications, it is usual to arrange the porosity of the fibrous body 31 to be 65-95%.

To increase the ability of the fiber body 31 to absorb and conduct fluids, the fiber body 31 may be treated with a surfactant, such as Triton-100, Tween-20, or the like, to increase the hydrophilicity of the fiber body 31.

< indicator core >

Indicator core 32 may or may not be a liquid-conducting material. The indicator core 32, when a liquid-conductive material, may be made of filaments or staple fibers, but filaments are preferred. Since the filaments are generally parallel in the indicating core 32 and aligned with the liquid conducting direction, the indicating core 32 made of the filaments conducts the liquid at a high speed, which is advantageous for shortening the color development time.

The indicator core 32 is made of a liquid-permeable material and is made of bi-component fibers of sheath-core structure, such as polyethylene/polypropylene fibers, polyethylene/polyester fibers, copolyester/polyester fibers, nylon/polyester fibers, etc.

The marking portion indicating the core 32 may be a color, a pattern, or a letter formed on the outer circumferential surface of the core 32. The indicating core 32 may be made of colored fiber or colored after bonding colorless fiber, so that a mark portion showing color is formed on the outer circumferential surface of the indicating core 32. The colorant should be colored so as to be fast enough to be dissolved by the liquid and not interfere with the detection of the analyte by the detection device, and is preferably a pigment. Dyes that are strong at indicating the staining of core 32 and that do not interfere with detection may also be used. The color of the indicating core 32 may be a bright color such as blue, green, rose, pink, orange, etc. The bright color of the indicia helps to improve the contrast of the indicia as the fibrous body 31 soaks up, which changes in clarity. The choice of different colors may be based on the user's preference.

The outer peripheral surface of the indicator core 32 may be provided with a pattern or letters as a logo. Or the indication core 32 may have a combination of colors, patterns or letters on its outer circumferential surface to form the indication portion.

< indicating means >

The indicating member 3 includes a fiber body 31 and an indicating core 32, and the fiber body 31 entirely or partially covers the indication portion of the indicating core 32. That is, the fibrous body 31 may cover only a part of the logo, or may cover all of the logo. Similarly, the indicating core 32 may be partially covered with the fiber body 31 or entirely covered with the indicating core 32.

The indicator member 3 may be attached to the handle 1, to the absorbent body 2, or to both the handle 1 and the absorbent body 2. The position of the indicator 3 can be selected according to the actual needs, as long as it is ensured that the mark portion to be observed is within the visible range of the naked eye and the fibrous body 31 is in communication with the absorbent body 2 when the covered fibrous body 31 becomes transparent. The fibrous body 31 and the indicating core 32 of the indicating member 3 may communicate with the absorbent body 2 at the same time. When the indicating core 32 of the indicating member is made of filament and the fibrous body 31 is made of staple fiber, the indicating member 3 as a whole has both a rapid liquid conduction speed and a significant change in the clarity of the marking portion during liquid collection.

< baffle plate >

When the diameter of the absorbent body 2 is larger than the diameter of the handle 1, a baffle 12 may be provided at the end of the handle 1 near the absorbent body 2. The baffle 12 may be integrally formed with the handle 1, or may be formed separately and then the baffle 12 and the handle 1 are fixedly assembled together.

Due to the design, the operation of collection personnel can be facilitated, and when the baffle 12 is used for squeezing the absorber 2, the liquid absorbed in the absorber 2 can be squeezed out more thoroughly.

According to the liquid collecting apparatus of the present invention, when the absorbent body 2 collects a sufficient amount of liquid, the absorbent body 2 transfers the collected liquid to the fibrous body 31, and the transparency of the fibrous body 31 is improved as the amount of the liquid absorbed increases. When the user can observe the marking portion indicating the outer peripheral surface of the core 32 through the fibrous body 31, it can be judged that the liquid collecting device has collected a sufficient amount of the liquid to be detected.

The liquid collecting device has the advantages of unique design, simple structure, concise and convenient use and high practical value and economic value.

First embodiment

FIG. 3 is a schematic structural diagram of a liquid detecting apparatus according to a first embodiment of the present invention; figure 4 is a longitudinal section through figure 3, indicating that the part 3 is cylindrical; fig. 5 is a cross-sectional view of the indicator piece 3 of fig. 3 in the form of a cylinder; FIG. 6 is a longitudinal sectional view of the member 3 shown in FIG. 3, which is a rectangular parallelepiped; fig. 7 is a cross-sectional view of the indicating member 3 of fig. 3 in the form of a rectangular parallelepiped.

As shown in fig. 3 to 7, the liquid collecting device according to the first embodiment of the present invention includes a handle 1, an absorbent body 2 fixedly connected to the handle 1, and an indicating member 3 fitted to the handle 1, wherein the indicating member 3 includes a fibrous body 31 and an indicating core 32, a mark portion is provided on an outer peripheral surface of the indicating core 32, the fibrous body 31 entirely or partially covers the mark portion of the indicating core 32, the fibrous body 31 is communicated with the absorbent body 2, and when the absorbent body 2 transmits collected liquid to the fibrous body 31, transparency of the fibrous body 31 is improved as an amount of the absorbed liquid increases.

In this embodiment, the portion of the handle 1 near the absorbent body 2 is provided with an inner cavity 11 extending in the axial direction of the handle 1, the indicating member 3 is inserted into the inner cavity 11, the peripheral wall of the inner cavity 11 corresponding to the indicating member 3 is made of a transparent material, and the fibrous body 31 of the indicating member 3 communicates with the absorbent body 2.

As shown in fig. 3, a cavity 11 is arranged at the part of the handle 1 close to the absorbent body 2, the material of the handle 1 at the part of the cavity 11 is transparent, and the indicating component 3 is positioned in the cavity 11 of the handle 1 close to the absorbent body 2. The outer peripheral surface of the indicator core 32 is covered with the fibrous body 31, and both end surfaces of the indicator core 32 are flush with both end surfaces of the fibrous body 31, so that the length of the indicator core 32 is equal to the length of the fibrous body 31, and the indicator core 32 and the fibrous body 31 are simultaneously communicated or connected with the absorbent body 2.

The absorbent body 2 is made of sponge or bonded fiber, the bottom of the handle 1 is fixed with the absorbent body 2 by adhesive, the indicating component 3 comprises a fiber body 31 and an indicating core 32 covered by the fiber body 31, the fiber body 31 is formed by bonding polyolefin fiber, the transparency of the fiber body 31 is poor under the dry condition, and the color of the indicating core 32 is difficult to be seen from the outside through the fiber body 31.

When the absorbent body 2 of the liquid absorption device absorbs enough liquid, part of the liquid is conducted to the fibrous body 31 covering the indicating core 32, the transparency of the fibrous body 31 wetted by the liquid is improved, and the color of the indicating core 32 can be seen from the outside through the transparent handle 1 and the fibrous body 31, so that whether the absorbent body 2 has absorbed enough liquid can be judged.

The indicator core 32 may be fully or partially coated by the fibrous body 31. The cross-section of the indicator core 32 may be circular, square, or any other geometric shape, or may be a thin sheet. The indicator core 32 may be a liquid-permeable material such as a water absorbent rod or a liquid-impermeable material such as a plastic rod, a sponge rod, or the like. The indicator core 32 may be formed with a symbol or pattern to increase contrast and identification.

After the liquid absorption device absorbs enough liquid, the absorption body 2 is inserted into a matched liquid collection container, and the handle 1 is pressed downwards, so that the liquid in the absorption body 2 can be squeezed out for subsequent tests.

As shown in fig. 3, a baffle 12 is provided at an end of the handle 1 near the absorbent body 2, and an inner hole 13 through which the indicating member 3 can pass is provided at a position of the baffle 12 corresponding to the inner cavity 11. The baffle 12 may be integrally formed with the handle 1, or may be formed separately and then the baffle 12 and the handle 1 are fixedly assembled together.

By the design, the operation of collection personnel can be facilitated, the liquid absorbed in the absorber 2 can be more thoroughly extruded out, and the inner hole 13 of the baffle 12 can correspond to the inner cavity 11 of the handle 1 in the same diameter and position.

FIG. 4 is a longitudinal section through the cylindrical body of the indicator piece 3 of FIG. 3; fig. 5 is a cross-sectional view of the indicator piece 3 of fig. 3 in the form of a cylinder. As shown in fig. 4 and 5, the indicating core 32 is a cylindrical body, and the liquid absorption indicating member 3 is also a cylindrical body as a whole; the fibrous body 31 is coated on the outer periphery of the indicating core body 32, and the circumference of the indicating core body 32 is coated by the fibrous body 31 on the cross section of the indicating component 3.

FIG. 6 is a longitudinal sectional view of the indicating member 3 of FIG. 3 in the form of a rectangular parallelepiped; fig. 7 is a cross-sectional view of the indicating member 3 of fig. 3 in the form of a rectangular parallelepiped. As shown in fig. 6 and 7, the indicating core 32 is a square column, and the indicating member 3 is also a square column as a whole; the fibrous body 31 is coated around the indication core body 32, and the periphery of the indication core body 32 is coated by the fibrous body 31 on the cross section of the indication component 3.

Fig. 4 to 7 are only examples of the shape of the indicator piece 3, and other variants, for example polygonal in cross-section, can be easily envisaged by the person skilled in the art, such simple variants not departing from the object of the invention being within the scope of the claims of the invention.

According to the liquid absorption indicating member 3 of the present invention, the characteristic that the transparency is improved after the liquid absorption by the fibrous body 31 is performed is utilized, so that the mark part of the indicating core body 32 covered by the fibrous body 31 is observed, and it is convenient for a user to judge whether the liquid is accurately collected on the collecting device or whether the user collects enough liquid.

Second embodiment

Fig. 8 is a schematic structural view of a liquid detection apparatus according to a second embodiment of the present invention. The structure of this embodiment is similar to that of the first embodiment, and the same parts as those of the first embodiment will not be described again.

As shown in fig. 8, the liquid detection device according to the second embodiment of the present invention includes a handle 1, an absorbent body 2 fixedly connected to the handle 1, and an indication member 3 assembled to the handle 1, wherein the indication member 3 includes a fibrous body 31 and an indication core 32, a mark portion is provided on an outer peripheral surface of the indication core 32, the fibrous body 31 entirely or partially covers the mark portion of the indication core 32, the fibrous body 31 is in communication with the absorbent body 2, and when the absorbent body 2 transmits collected liquid to the fibrous body 31, transparency of the fibrous body 31 increases with an increase in the amount of liquid absorbed.

The absorption body 2 is provided with insertion holes 21, and the fibrous body 31 is extended and inserted into the insertion holes 21, and the fibrous body 31 can be pressed into the cavity 11 when the absorption body 2 is compressed.

As shown in fig. 8, the portion of the handle 1 near the absorbent body 2 is provided with a deeper cavity 11, and the depth of the cavity 11 is preferably substantially equal to the length of the fibrous body 31.

The fibrous body 31 has a first portion inserted into the insertion hole 21 and a second portion axially movably inserted into the inner cavity 11, whereby the absorbent body 2 is fixedly connected to the handle 1 through the fibrous body 31. When the bottom of the handle 1 abuts against the absorbent body 2 and presses the absorbent body 2, the fibrous body 31 moves axially in the inner chamber 11 relative to the handle 1. That is, when the absorbent body 2 is axially compressed by applying an axial force, the fibrous body 31 can be axially pressed into the cavity 11, thereby avoiding obstructing the compression of the absorbent body 2.

The first part of the fibrous body 31 can be fixedly connected to the insertion hole 21 of the absorbent body 2 by interference fit, and since the absorbent body 2 is made of an elastic material that can be deformed by compression, the absorbent body 2 can tightly cover the fibrous body 31 to prevent the fibrous body from falling off.

In the present embodiment, the insertion hole 21 in the middle of the absorbent body 2 penetrates the absorbent body 2, and the fibrous body 31 extends to the bottom of the absorbent body 2. With such a structure, the contact area between the fibrous body 31 and the absorbent body 2 can be increased, so that the frictional force between the outer peripheral wall of the fibrous body 31 and the inner peripheral wall of the insertion hole 21 is increased, and the fixed connection between the fibrous body 31 and the absorbent body 2 is ensured. On the other hand, by increasing the contact area between the fibrous body 31 and the absorbent body 2, the efficiency of the absorbent body 2 in transferring liquid to the fibrous body 31 can be improved, and the degree of absorption of the liquid sample can be observed conveniently.

As shown in fig. 8, the handle 1 is provided with a baffle 12 at an end portion thereof near the absorbent body 2, and the baffle 12 is provided with an inner hole 13 through which the fibrous body 31 can pass at a position corresponding to the insertion hole 21. The baffle 12 may be integrally formed with the handle 1, or may be formed separately and then the baffle 12 and the handle 1 are fixedly assembled together.

In this embodiment, the second portion of the fibrous body 31 and the handle 1 can be fixedly connected by friction between the outer peripheral surface of the second portion of the fibrous body 31 and the inner wall of the inner cavity 11 of the handle 1. Since no substantial axial force is normally applied during liquid collection. Therefore, it is sufficient to ensure a reliable connection of the fiber body 31 to the handle 1 only by the friction force between the outer circumferential surface of the second portion of the fiber body 31 and the inner wall of the lumen 11. When the liquid in the absorption body 2 is released, the fibrous body 31 can be pressed axially into the cavity 11 of the handle 1 by simply applying an axial force against the friction force in the axial direction of the fibrous body 31, thereby avoiding hindering the axial compression of the absorption body 2.

In addition, the diameter of the inner hole 13 in the baffle 12 can be set to be smaller than the size of the inner cavity 11 of the handle 1, and the second part of the fibrous body 31 can be connected with the baffle of the handle 1 only by utilizing the fixed connection of the inner hole 13 of the baffle 12 and the fibrous body 31. The inner hole 13 of the baffle 12 and the fibrous body 31 can be fixedly connected by the friction force between the inner wall of the inner hole 13 and the outer peripheral surface of the fibrous body 31. When the liquid in the absorbent body 2 is released, the fibrous body 31 can be pressed axially into the cavity 11 of the handle 1 by simply applying an axial force in the axial direction of the fibrous body 31 that overcomes the friction between the inner wall of the inner hole 13 and the outer peripheral surface of the fibrous body 31, thereby avoiding the obstruction of the axial compression of the absorbent body 2. In this way, the machining requirements of the inner cavity 11 of the handle 1 can be reduced.

The handle 1 is made of transparent material at least at the part of the inner cavity 11 corresponding to the second part of the fibrous body 31, and can be made of transparent material for convenient production.

The indicator core 32 is positioned above the absorbent body 2 and is completely covered with the fibrous body 31. When the absorbent body 2 absorbs a sufficient amount of liquid, part of the liquid is conducted to the fibrous body 31 located in the lumen 11 of the handle 1, and the fibrous body 31 becomes more transparent when wetted, and the indication portion indicating the core 32 can be seen through the lumen 11 of the handle 1 and the fibrous body 31.

When the absorbent body 2 has absorbed a sufficient amount of liquid, the absorbent body 2 of the liquid collecting device is inserted into a liquid collecting container (not shown) and the handle 1 is pressed downward to squeeze the liquid in the absorbent body 2 into the liquid collecting container, whereby the first part of the fibrous body 31 located in the absorbent body 2 is moved up into the cavity 11 of the handle 1 while the absorbent body 2 is compressed. The liquid collecting device adopting the embodiment has the advantages of simple structure, sensitive color development and convenient processing.

Third embodiment

FIG. 9 is a schematic structural view of a liquid detecting apparatus according to a third embodiment of the present invention; fig. 10 is a cross-sectional view taken at a-a in fig. 9. The structure of this embodiment is similar to that of the first embodiment, and the same parts as those of the first embodiment will not be described again.

As shown in fig. 9 and 10, a liquid detection apparatus according to a third embodiment of the present invention includes a handle 1, an absorbent body 2 fixedly connected to the handle 1, and an indicating member 3 fitted to the absorbent body 2, wherein the indicating member 3 includes a fibrous body 31 and an indicating core 32, a mark portion is provided on an outer peripheral surface of the indicating core 32, the fibrous body 31 entirely or partially covers the mark portion of the indicating core 32, the fibrous body 31 is simultaneously the absorbent body 2, and when the absorbent body 2 absorbs liquid, transparency of the absorbent body 2 increases with an increase in the amount of liquid absorbed.

In this embodiment, a portion of the handle 1 adjacent to the absorbent member 2 is provided with a partially closed cavity 11 extending in the axial direction of the handle 1, the absorbent member 2 is provided with an insertion hole 21, a portion of the indicator core 32 is inserted into the cavity 11, and the other portion is extended and inserted into the insertion hole 21, and the indicator core 32 can be pressed into the cavity 11 when the absorbent member 2 is compressed.

As shown in fig. 9 and 10, the portion of the handle 1 having the inner cavity 11 is set in a partially closed state, that is, an opening is formed in the outer wall of the handle 1 at the inner cavity 11, which is shown in a circular arc shape in the sectional view shown in fig. 10.

In the present embodiment, the handle 1 is preferably assembled with the baffle 12 after being molded separately, and the cross section of the portion of the handle 1 near the baffle 12 is slightly larger than a semicircle, so as to prevent the indicating core 32 from being pulled out of the inner cavity 11. The indicating core 32 is tightly fitted with the baffle 12, and the cylindrical indicating core 32 can move up and down along the inner wall of the inner cavity 11 of the handle 1 under the condition that enough axial force is applied. The absorbent body 2 is a sponge or bonded fiber provided with an insertion hole 21, the inner diameter of the insertion hole 21 is smaller than the diameter of the indicating core 32, and the absorbent body 2 is tightly fitted with the indicating core 32 by the resiliency of the sponge or bonded fiber to prevent the absorbent body 2 from slipping off the indicating core 32.

The insertion hole 21 in the middle of the absorber 2 extends toward the bottom to a half of the axial direction of the absorber 2. The depth of the insertion holes 21 is generally determined in accordance with the frictional force required for fixedly attaching the indicator core 32 and the absorbent body 2. The greater the friction required, the deeper the depth of the insertion hole 21 can be set to, up to penetrating the bottom of the absorbent body 2. However, the shallower the depth of the insertion hole 21, the greater the absorption capacity of the absorbent body 2 can be. Therefore, the actual depth of the insertion hole 21 can be determined reasonably according to the actually required frictional force.

In the present embodiment, it is not necessary to provide a structure in which the fibrous body 31 is separately provided, and specifically, the absorbent body 2 has a function of absorbing the sample liquid and also has the characteristic requirements of the fibrous body 31, and therefore, in the present embodiment, the absorbent body 2 is also the fibrous body 31.

A portion of the indicator core 32 is inserted into the absorbent body 2, and the indicator core 32 is a liquid-impermeable material such as a plastic rod or a sponge rod, and may also be a liquid-permeable material such as a water-absorbent rod. The absorbent body 2 has low transparency when dry, and the color of the indicator core 32 is hard to see through the absorbent body 2 from the outside, and when the absorbent body 2 absorbs a sufficient amount of liquid, the transparency of the absorbent body 2 is greatly improved, and the user can directly observe the indicator of the indicator core through the absorbent body 2.

The absorbent body 2 absorbs enough liquid and then is inserted into a matched liquid collecting container, the handle 1 is pressed downwards to squeeze the liquid in the absorbent body 2 into the liquid collecting container, and the absorbent body 2 is compressed and simultaneously the indication core 32 moves upwards along the side surface of the semicircular handle 1. In the embodiment, the indicating component 3 is only formed by the absorber 2 and the indicating core 32, so that the product structure is optimized, the production process is simplified, and the production cost is reduced.

Fourth embodiment

Fig. 11 is a schematic structural view of a liquid collecting apparatus according to a fourth embodiment of the present invention. The structure of this embodiment is similar to that of the first embodiment, and the same parts as those of the first embodiment will not be described again.

As shown in fig. 11, a liquid collecting device according to a fourth embodiment of the present invention includes a handle 1, an absorbent body 2 fixedly connected to the handle 1, and an indicating member 3 fitted to the handle 1 and/or the absorbent body 2, wherein the indicating member 3 includes a fibrous body 31 and an indicating core 32, a mark portion is provided on an outer peripheral surface of the indicating core 32, the fibrous body 31 entirely or partially covers the mark portion of the indicating core 32, the fibrous body 31 is in communication with the absorbent body 2, and when the absorbent body 2 transfers collected liquid to the fibrous body 31, transparency of the fibrous body 31 is improved as an amount of liquid absorbed increases.

The absorption body 2 is provided with insertion holes 21 penetrating the absorption body 2, and the indication core 32 is provided with fixing plates 33 at the end portions after extending through the insertion holes 21, and the indication core 32 can be pressed into the cavity 11 when the absorption body 2 is compressed in the axial direction.

The indication core 32 penetrates through the absorber 2, one end of the indication core 32 extends out of the end face of the absorber 2, and the fixing plate 33 is formed at one end of the indication core 32, which extends out of the absorber 2, so that the connection reliability between the absorber 2 and the indication core 32 is improved, the absorber 2 is prevented from falling off, the handle 1 and the absorber 2 do not need to be fixed through an adhesive, the connection reliability is higher, and the production cost is reduced. In this embodiment, a step may be provided in the inner cavity 11 of the handle 1 for positioning and fixing the fibrous body 31, and when the handle 1 is pressed, the indicating core may move in the inner cavity 11 without moving the fibrous body 31.

Further, if the same material as that used for manufacturing the fibrous body 31 is selected to manufacture the absorbent body 2, the absorbent body 2 has the characteristic of improving transparency after absorbing water, when the absorbent body 2 absorbs some liquid, the color of the indicating core can be seen through the absorbent body 2, when the absorbent body 2 absorbs more liquid, the fibrous body 31 at the handle 1 part changes color after being wetted, and the mark part of the indicating core 32 can be seen through the transparent handle 1 and the fibrous body 31 from the outside. Therefore, the absorption amount of the sample liquid can be observed at any time, and the sampling is convenient.

Fifth embodiment

Fig. 12 is a schematic structural view of a liquid collecting apparatus according to a fifth embodiment of the present invention. The structure of this embodiment is similar to that of the first embodiment, and the same parts as those of the first embodiment will not be described again.

As shown in fig. 12, a liquid collecting device according to a fifth embodiment of the present invention includes a handle 1, an absorbent body 2 fixedly connected to the handle 1, and an indicating member 3 fitted to the handle 1 and/or the absorbent body 2, wherein the indicating member 3 includes a fibrous body 31 and an indicating core 32, the indicating core 32 is provided with a mark portion on an outer peripheral surface and fixedly connected to the handle 1, the fibrous body 31 entirely or partially covers the mark portion of the indicating core 32, the fibrous body 31 is communicated with the absorbent body 2, and when the absorbent body 2 transfers collected liquid to the fibrous body 31, transparency of the fibrous body 31 is improved as an amount of the absorbed liquid increases. The absorber 2 is provided with an insertion hole 21 penetrating through the absorber 2, one end of the indication core 32 is fixedly connected with the handle 1, the other end of the indication core is provided with a segment-shaped fixing plate 33, the fixing plate 33 penetrates through the insertion hole 21 to support the absorber 2, and the diameter of the maximum cross section of the fixing plate 33 is larger than that of the insertion hole 21 and smaller than that of the handle 1.

As shown in fig. 12, in the present embodiment, the absorbent body 2 is also used as the fibrous body 31, and one end of the indicator core 32 may be fixedly connected to the end of the handle 1, or one end of the indicator core 32 may be fixedly connected to the end of the handle 1 by being integrally molded.

The other end of the indicator core 32 is provided with a fixing plate 33, and in this embodiment, the fixing plate 33 is preferably of a segment structure, i.e. the outer circumference is hemispherical or a spherical crown-shaped curved surface, and the inner diameter of the insertion hole 21 is smaller than the maximum cross-sectional diameter of the fixing plate. In this embodiment, the segment structure is a sphere or an ellipsoid, which is cut by a plane, and is not larger than a hemisphere, and the rest of the segment structure is called a segment structure.

Due to the radial elasticity of the fibrous body 2 and the insertion hole 21, when the fixing plate 33 passes through the insertion hole 21, the segment-shaped fixing plate 33 spreads the insertion hole 21 and passes through the insertion hole 21. When the fixing plate 33 in the form of a segment of a sphere passes through the insertion hole 21, the absorber 2 is supported by the fixing plate 33 by the retraction of the inner diameter of the insertion hole 21, and is thereby firmly fixed between the end face of the handle 1 and the fixing plate 33.

In the present embodiment, in the process of manufacturing the absorbent body 2, the fiber arrangement direction may be controlled so that the axial compression strength of the absorbent body 2 is greater than the radial compression strength. After the absorption body 2 has absorbed sufficient liquid, an associated liquid collection container 4 as shown in fig. 13 is inserted, and the handle 1 is pressed downward so that the absorption body 2 is radially compressed, whereby the liquid in the absorption body 2 is squeezed into the liquid collection container 4. It should be noted that the handle 1 and the indicating core 32 in this embodiment can be integrally formed during manufacturing, which further simplifies the components and assembly process.

Specifically, as shown in fig. 13, the liquid collection container 4 used in cooperation with the liquid collecting apparatus shown in fig. 12 includes a liquid collection chamber 41, and a compressing portion disposed in the liquid collection chamber 41 for radially compressing the absorbent body 2. The compression section includes a conical introduction port 42, a radial compression chamber 43 provided at a lower portion of the introduction port 42, and a liquid discharge port 44 provided in the vicinity of a boundary between the introduction port 42 and the radial compression chamber 43. The liquid discharge port 44 communicates with the liquid collection chamber 41. The diameter of the handle 1 is substantially equal to the diameter of the absorption body 2 after a sufficient radial compression, the inner diameter of the radial compression chamber 43 is slightly larger than the diameter of the absorption body 2 after a sufficient radial compression, and the maximum cross-sectional diameter of the fastening plate 33 is smaller than the diameter of the absorption body 2 after a sufficient radial compression.

When the absorbent body 2 has absorbed sufficient liquid, the handle 1 presses the absorbent body 2 into the conical inlet 42 of the liquid collecting container 4, and the absorbent body 2 is gradually compressed radially until it is pressed into the radial compression chamber 43. In the radial compression chamber 43, the absorbent body 2 is sufficiently radially compressed, and the absorbed liquid is sufficiently released and flows into the liquid collection chamber 41 through the liquid discharge port 44, thereby completing the liquid collection operation.

A portion of the indicator core 32 is inserted into the absorbent body 2, and the indicator core 32 is a liquid-impermeable material such as a plastic rod or a sponge rod, and may also be a liquid-permeable material such as a water-absorbent rod. The transparency of the absorbent body 2 is low when it is dry, and the indicator portion of the indicator core 32 is difficult to see through the absorbent body 2 from the outside, and when the absorbent body 2 absorbs a sufficient amount of liquid, the transparency of the absorbent body 2 is greatly improved, and the indicator portion of the indicator core can be directly seen through the absorbent body 2 by a user.

The liquid collecting device adopting the embodiment has the advantages of simple structure, convenience in assembly, safety and reliability.

In the five embodiments, the fibrous body 31 is made of single-component fibers, such as polyethylene fibers, polypropylene fibers, polyolefin fibers, etc.; preferably, the fiber is made of bi-component fiber bonding, such as bonding one or more of polyethylene/polypropylene fiber, polyethylene/polyester fiber, polypropylene/polyester fiber and polyethylene/nylon fiber; of course, the fiber body 31 may be made by mixing and bonding two or more kinds of fibers, but the material of the fiber body 31 contains at least one component selected from polyethylene, polypropylene, and polyolefin, thereby achieving the characteristic of transparency when it is exposed to water. The indicator core may be made of a coloured fibre binder or a colourless fibre binder and then coloured with a colouring agent which is fast and not dissolved by the liquid sample and which does not interfere with the detection of the analyte by the detection means, preferably a pigment, or a dye which is strongly coloured but does not interfere with the detection. The indicating core can be various colors, and the color of the indicating core is bright, which is helpful for improving the contrast of the color change of the indicating component 3 when the absorbent body 2 absorbs liquid and wets. The color of the indicator core may be dependent on the preference of the user. In addition, according to different preferences of users, identification marks can be further arranged on the indicating core body, for example, patterns, symbols or characters are printed on the outer surface of the indicating core body, or the indicating core body is designed into a sheet shape, a symbol shape, a character shape, a pattern shape and the like, so that the contrast and the identification degree are increased.

In specific implementation, the absorbent body 2 is placed at the sampling position, after the absorbent body 2 absorbs a sufficient amount of liquid sample, the fiber body 31 communicated with the absorbent body 2 can improve the wetting degree along with the increase of the absorption amount, so that the transparency is gradually improved, after the transparency of the fiber body 31 is improved, the indicating core body is developed from the fiber body 31, the indicating core body can be directly observed, then the absorbent body 2 is placed in the liquid collecting container, and the handle 1 is pressed to squeeze the liquid in the absorbent body 2 into the liquid collecting container. In summary, the liquid collecting device of the present invention has the advantages of simple structure, convenient use, high reliability, fast and obvious indication of whether the liquid sample is collected or not, no interference to the detection of the liquid sample, safety and reliability, effectively overcomes various defects in the prior art, and has high industrial utilization value.

While the liquid absorption indicating member and the liquid collecting device provided by the embodiments of the present invention have been described in detail, those skilled in the art will appreciate that the embodiments and applications of the liquid absorption indicating member and the liquid collecting device may be varied according to the spirit of the embodiments and the present invention.

Claims

1. The liquid collecting device is characterized by comprising a handle (1), an absorption body (2) fixedly connected with the handle (1) and an indicating component (3) assembled on the handle (1) and/or the absorption body (2), wherein the indicating component (3) comprises a fiber body (31) and an indicating core body (32), a mark part is arranged on the outer peripheral surface of the indicating core body (32), the fiber body (31) completely or partially covers the mark part of the indicating core body (32), the fiber body (31) is communicated with the absorption body (2), and when the absorption body (2) transmits collected liquid to the fiber body (31), the transparency of the fiber body (31) is improved along with the increase of the absorbed liquid amount.

2. The fluid collection device according to claim 1, wherein the fibrous body (31) comprises at least one of polyethylene, polypropylene, or polyolefin.

3. The fluid collection device of claim 1, wherein the indicator core (32) is a liquid-conducting material.

4. The fluid collection device of claim 1, wherein the indicia is a color, pattern, or text.

5. A liquid acquisition device according to claim 1, characterized in that the handle (1) is provided with a baffle (12) at the end adjacent to the absorption body (2).

6. The liquid collecting device as claimed in claim 1, wherein a portion of said handle (1) adjacent to said absorbent body (2) is provided with an inner cavity (11) extending in an axial direction of said handle (1), said indicating member (3) is inserted into said inner cavity (11), a peripheral wall of said inner cavity (11) corresponding to said indicating member (3) is made of a transparent material, and said fibrous body (31) of said indicating member (3) communicates with said absorbent body (2).

7. A liquid acquisition device according to claim 6, characterized in that the absorption body (2) is provided with an insertion hole (21), and the fibrous body (31) extends and is inserted into the insertion hole (21), and the fibrous body (31) can be pressed into the inner cavity (11) when the absorption body (2) is compressed.

8. The liquid collecting device as claimed in claim 1, wherein a portion of the grip (1) adjacent to the absorbent body (2) is provided with a partially closed inner cavity (11) extending in an axial direction of the grip (1), the absorbent body (2) is provided with an insertion hole (21), a part of the indicating core (32) is inserted into the inner cavity (11), and another part is extended and inserted into the insertion hole (21), the indicating core (32) can be pressed into the inner cavity (11) when the absorbent body (2) is compressed, and the absorbent body (2) serves as the fibrous body (31) at the same time.

9. The liquid collecting device as claimed in claim 6, characterized in that the absorption body (2) is provided with an insertion hole (21) extending through the absorption body (2), and that the indicator core (32) is provided with a fixing plate (33) at the end after extending through the insertion hole (21), the indicator core (32) being pressable into the inner cavity (11) when the absorption body (2) is compressed.

10. The liquid collecting device according to claim 1, wherein the absorbent body (2) is provided with an insertion hole (21) penetrating through the absorbent body (2), one end of the indicating core (32) is fixedly connected with the handle (1), the other end is provided with a segment-shaped fixing plate (33), the fixing plate (33) passes through the insertion hole (21) to support the absorbent body (2), and the diameter of the maximum cross section of the fixing plate (33) is larger than the diameter of the insertion hole (21) and smaller than the diameter of the handle (1).