CN111175076A

CN111175076A - Liquid collecting device

Info

Publication number: CN111175076A
Application number: CN201811335495.8A
Authority: CN
Inventors: 不公告发明人
Original assignee: Maibo High Polymer Material Ningbo Co ltd
Current assignee: Maibo High Polymer Material Ningbo Co ltd
Priority date: 2018-11-10
Filing date: 2018-11-10
Publication date: 2020-05-19
Also published as: WO2020093629A1

Abstract

The invention relates to a liquid collecting device, which is provided with a handle, a sampling rod and an absorber coated on the peripheral wall of the sampling rod, wherein the absorber comprises an outer absorber and an inner absorber, the inner peripheral wall of the outer absorber and the peripheral wall of the inner absorber are mutually bonded, and the density of the outer absorber is less than that of the inner absorber; the inner absorber has radially expandable axial insertion holes. The liquid collecting device has the advantages of simple structure, easy production and assembly, convenient use, easy use of collected liquid samples for subsequent tests and wide application in various medical inspection places.

Description

Liquid collecting device

Technical Field

The invention relates to a liquid acquisition device, in particular to a liquid acquisition device used in the fields of medical inspection and drug detection.

Background

In the fields of medical testing and drug testing, testing of blood, urine, and saliva is common. The collection of a sample of the liquid to be analyzed is a part of the testing process. One commonly used method of acquiring fluid is to place a fluid absorbent into the acquired site and remove the fluid absorbent after a certain period of time for subsequent testing. For ease of handling, the prior art method has used an adhesive to secure the liquid absorbent to a sheet at the front end of a handle. The method has low efficiency and high cost, and the absorber is easy to fall off in the using process.

A liquid collection system among the prior art, the device include the funnel, and the funnel below is connected with the detachable outer tube, and the outer tube endotheca is equipped with the inner tube that bottom up, opening set up down, has deposited in the inner tube and has preserved liquid, and the space between outer tube and the inner tube is outer cavity, outer cavity and funnel intercommunication, and the inner tube links to each other with the funnel, and the outer tube bottom is provided with and is used for the step with inner tube mouth of pipe confined. When the outer tube and the funnel are screwed tightly, the inner tube and the outer chamber are sealed and isolated, so that the preservation solution cannot leak out before the device is not used; when the outer tube revolved off the funnel, the inner tube dredged with outer cavity, ensured that the liquid of preserving in the inner tube and outer cavity mixes, made liquid preserve for a long time, and then guaranteed the quality of sample. The device makes the preservative fluid flow out from the bottom of the inner tube and mix with the liquid, and avoids the pollution generated in the process of adding from the outside in the prior art. However, the liquid collecting device has a complicated structure, which is not favorable for manufacturing production.

Another saliva collection system among the prior art, including stock solution pipe and lid, stock solution pipe and lid can form inside stock solution space after the dismantlement is connected, and the inside barrier film that still is equipped with in stock solution space, barrier film divide into two parts independent each other with the stock solution space, and the lid is inside to be equipped with impales the device, impales the device and is used for punctureing the barrier film after stock solution pipe and lid are dismantled to be connected. The liquid storage tube is made of transparent material or non-transparent material. The liquid collecting device has more parts and is inconvenient to use.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention discloses a liquid collecting device which is provided with a handle, a sampling rod and an absorber coated on the peripheral wall of the sampling rod, wherein the absorber comprises an outer absorber and an inner absorber, the inner peripheral wall of the outer absorber and the peripheral wall of the inner absorber are mutually bonded, and the density of the outer absorber is less than that of the inner absorber; the inner absorber has radially expandable axial insertion holes.

Further, the density of the outer absorbent layer is 0.035-0.20 g/cm³The density of the inner layer absorber is 0.15-0.45 g/cm³。

Further, the wall thickness of the inner layer absorber is 0.2mm to 3.5 mm.

Further, the outer layer absorbent body and the inner layer absorbent body are made of bicomponent fibers bonded together.

Further, the absorber has an axial compressive strength greater than a radial compressive strength.

Further, the liquid collecting device further comprises an upper baffle and a lower baffle which are arranged at two ends of the sampling rod, and the upper baffle is fixedly connected with the end part of the handle.

Further, the cross-sectional area of the lower baffle plate decreases from top to bottom, and the maximum cross-sectional area of the lower baffle plate is larger than the inner diameter of the jack and smaller than the maximum expanded inner diameter of the jack.

Further, handle, last baffle, sampling rod and lower baffle integrated into one piece.

Further, the cross section of the lower baffle is circular.

Further, a liquid acquisition indicating member is provided between the absorbent body and the upper baffle.

As mentioned above, the liquid collecting device of the invention can conveniently and quickly collect the liquid to be tested and can easily use the collected liquid sample for subsequent tests.

In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

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

FIG. 1 is a schematic cross-sectional view of a fluid collection device according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a fluid collection device according to a second embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a fluid collection device according to a third embodiment of the present invention;

FIG. 4 is a schematic view of a fluid collection container for use with a fluid collection device according to a third embodiment of the present invention;

FIG. 5 is a schematic structural view of a liquid collection device according to a fourth embodiment of the present invention;

3 fig. 3 6 3 is 3 a 3 schematic 3 view 3 of 3 the 3 section 3 a 3- 3 a 3 in 3 fig. 35 3. 3

Detailed Description

The following description is given by way of specific embodiments, and the advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein.

In the present invention, the lower end or the front end in the drawings refers to one end of the lower flap, and the upper end or the rear end refers to one end of the handle.

The exemplary embodiments of the present invention will now be described 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.

First embodiment

Fig. 1 is a schematic cross-sectional view of a liquid collection device according to a first embodiment of the present invention. As shown in fig. 1, a liquid acquisition apparatus according to a first embodiment of the present invention has a handle 1, a sampling rod 13, and an absorbent body 2 coated on the outer peripheral wall of the sampling rod 13, the absorbent body 2 including an outer absorbent body 21 and an inner absorbent body 22, the inner peripheral wall of the outer absorbent body 21 and the outer peripheral wall of the inner absorbent body 22 being bonded to each other, the density of the outer absorbent body 21 being lower than that of the inner absorbent body 22; the inner layer absorber 22 has radially expandable axial insertion holes 23.

The handle 1 of the present invention is generally cylindrical and functions to provide a grip for a sampler to operate the fluid collection device. Of course, the handle 1 may be provided with other three-dimensional shapes for easy holding, such as a square column.

The sampling rod 13 of the present invention is preferably a cylinder, and the outer peripheral wall thereof is covered with the absorbent member 2, and may be fixedly connected to the end of the handle 1 directly or indirectly. The sampling rod 13 may be injection molded from a plastic such as polypropylene or polymethylmethacrylate. In particular, the handle 1 and the sampling rod 13 can be integrally injection molded to reduce the number of parts for assembly and simplify the assembly process.

The main function of the outer layer absorbent body 21 according to the invention is to absorb liquid samples,and release the liquid during subsequent testing. Suitable outer layer absorbent densities are from 0.035 to 0.20 g/cm³Too high density leads to insufficient liquid absorption due to too low porosity of the outer layer absorbent 21, and also causes discomfort to the person to be sampled due to too high hardness of the outer layer absorbent 21 having high density. When the density of the outer layer absorbent body 21 is too low, the outer layer absorbent body 21 is difficult to manufacture, and the outer layer absorbent body 21 having too low density may have insufficient capillary force, which may cause difficulty in sampling. The outer absorbent body 21 is relatively soft and has sufficient capillary force, high sampling speed, large acquisition amount, and easy release of the acquired liquid sample after radial compression.

The main function of the inner layer absorbent body 22 according to the present invention is to support the softer outer layer absorbent body 21 and to form the radially expandable and contractible axial insertion holes 23, so that the absorbent body 2 and other parts of the liquid acquisition apparatus are easily assembled, the manufacturing cost is greatly reduced and the reliability of the product is improved. The radially telescopic axial insertion hole 23 can be radially expanded under the action of external force, so that the sampling rod 13 can be conveniently inserted and assembled after the inner diameter of the insertion hole 23 is increased. After the sampling rod 13 is assembled in place, the insertion hole 23 can be radially contracted and reset, so that the outer peripheral wall of the sampling rod 13 is tightly covered to form a tight assembly.

The density of the inner layer absorbent 22 is 0.15 to 0.45 g/cm³. If the density of the inner layer absorbent body 22 is too low, the strength is insufficient, and the absorbent body is likely to fall off the sampling rod 13. Too high a density of the inner layer absorbent body 22 results in too low a radial stretchability of the insertion holes, making assembly difficult. The inner layer absorber 22 has a wall thickness of 0.2-3.5mm, and a smaller absorber 2 is more suitable since the device is mainly used for collecting liquid samples of human body parts such as oral cavity, nasal cavity, cervix, vagina and the like. The thinner wall thickness of the inner absorbent 22 facilitates reducing the diameter of the absorbent and facilitates making smaller fluid acquisition devices; the greater thickness of the inner absorbent 22 wall is beneficial to increasing the strength of the inner absorbent 22, and is suitable for applications requiring greater strength in the inner absorbent 22, such as fluid acquisition devices that require squeezing out of fluid acquired in the absorbent 2.

According to the liquid collecting device of the present invention, the absorbent body 2 comprises the inner absorbent body 22 with higher density and the outer absorbent body 21 with lower density, both of which are made of bonded bicomponent fibers, preferably bicomponent fibers with sheath-core structure or eccentric structure, such as polyethylene/polypropylene fibers, polyethylene/polyester fibers, etc., and the sheath layer of the fibers is made of chemically inert polyethylene, which can reduce the absorption of the tested components in the liquid sample and improve the sensitivity of the subsequent test. The inner wall of the outer layer absorber 21 and the outer wall of the inner layer absorber 22 are bonded to each other, so that the outer layer absorber can be prevented from falling off during assembly or use.

According to the liquid collecting apparatus of the present invention, the absorbent body 2 has an axial compressive strength greater than a radial compressive strength. With this structure, the liquid collected in the absorbent body 2 can be squeezed out in a radially compressed manner.

The liquid acquisition device also comprises an upper baffle 12 and a lower baffle 14 which are arranged at two ends of the sampling rod 13, and the upper baffle 12 is fixedly connected with the end part of the handle 1.

The cross-sectional area of the lower baffle 14 decreases from top to bottom, and the maximum cross-sectional area of the lower baffle 14 is larger than the inner diameter of the insertion hole 23 and smaller than the maximum expanded inner diameter of the insertion hole 23.

In order to simplify the assembly process and reduce the cost, in the present embodiment, the handle 1, the sampling rod 13, the upper baffle 12 and the lower baffle 14 are integrally formed, and preferably, an injection molding method is adopted. The absorption body 2 is used for absorbing liquid to be detected, the absorption body 2 is provided with an axial insertion hole capable of radially extending and retracting, and the maximum cross-sectional area of the lower baffle plate 14 is larger than the inner diameter of the insertion hole 23 and smaller than the maximum expanded inner diameter of the insertion hole 23 as the cross section of the lower baffle plate 14 decreases progressively from top to bottom. Preferably, the cross section of the lower end of the lower baffle 14 is set to be smaller than the cross section of the insertion hole 23 in the inner layer absorber 22, when the lower baffle 14 is inserted into the insertion hole 23 of the inner layer absorber 22, the insertion hole 23 is radially expanded, so that the lower part of the lower baffle 14 and the sampling rod 13 can smoothly pass through the insertion hole 23, and after the lower baffle 14 completely passes through the insertion hole 23, the insertion hole 23 is radially retracted. Since the maximum cross section of the lower baffle 14 is larger than the cross section of the insertion holes 23, the absorbent body 2 cannot be pulled out from the lower baffle. After the liquid sample is sampled, the liquid sample can be directly used for subsequent testing.

The cross-section of the lower baffle 14 is preferably circular or approximately circular polygonal. The longitudinal section of the lower baffle 14 is preferably trapezoidal, circular arc or the like. In the present embodiment, the lower baffle 14 is provided in a trapezoidal shape in longitudinal section.

Second embodiment

Fig. 2 is a schematic cross-sectional view of a liquid collection device 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 are not described again in the description of this embodiment.

As shown in FIG. 2, in the liquid collecting apparatus of the present embodiment, the front end of the absorbent member 2 is formed in a spherical crown shape, and the wall thickness of the inner layer absorbent member 22 is 0.2mm, and if it is necessary to increase the strength of the inner layer absorbent member 22, the wall thickness of the inner layer absorbent member 22 can be increased as appropriate. The liquid collecting device of the embodiment is suitable for collecting samples at the parts of the human body with smaller space and higher sensitivity. Such as the nasal cavity, cervix, vagina, etc.

In the liquid collecting device of the embodiment, the indicating component 3, such as the protonation color-changing test paper, is arranged between the upper end of the absorber 2 and the upper baffle 12, so that the collecting state of the absorber on the liquid sample can be observed in real time during sampling, and whether the sample collection is finished or not can be judged conveniently.

In the present embodiment, the longitudinal section of the lower baffle 14 is provided in a circular arc shape.

Third embodiment

Fig. 3 is a schematic cross-sectional view of a liquid collection device according to a third 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 are not described again in the description of this embodiment.

As shown in fig. 3, the present embodiment is similar to the first embodiment. The liquid collecting device of the embodiment is used for collecting saliva in the oral cavity for drug abuse detection, and the density of the outer layer absorber 21 is 0.08 g/cm³About, the density of the inner layer absorbent body 22 is 0.35 g/cm³The thickness of the wall is 1.5mm, and the inner layer absorbent body 22 has high strength. In the present embodiment, the lower baffle 14 is provided in a trapezoidal shape in longitudinal section.

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.

Fig. 4 is a schematic structural view of a liquid collection container which is used in cooperation with a liquid collection device according to a third embodiment of the present invention. After the absorption body 2 has absorbed sufficient liquid, as shown in fig. 4, a liquid collection container 4 fitted as shown in fig. 4 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.

In this regard, as shown in fig. 4, the liquid collection container 4 used in cooperation with the liquid collecting device shown in fig. 3 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 upper baffle 2 is substantially equal to the diameter of the absorption body 2 after fully radial compression, the inner diameter of the radial compression cavity 43 is slightly larger than the diameter of the absorption body 2 after fully radial compression, and the maximum cross-sectional diameter of the lower baffle 14 is smaller than the diameter of the absorption body 2 after fully radial compression. The upper baffle 12 is provided with a greater strength to facilitate pressing the absorbent body 2 into the liquid collecting container 4.

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. The collected liquid sample is used for subsequent testing.

Fourth embodiment

Fig. 5 is a schematic cross-sectional view of a liquid collection device according to a fourth embodiment of the present invention. This embodiment has a similar structure to the first embodiment, and the same parts as the first embodiment are not described again in the description of this embodiment

As shown in fig. 5, the present embodiment is similar to the first embodiment. The liquid collecting device of the embodiment is used for collecting saliva in the oral cavity to detect diseases such as acquired immunodeficiency, and the absorber needs to rub the gum part to obtain partial epithelial cells in the process of collecting the saliva, for example, AIDS is detected by sampling the oral cavity.

The outer layer absorbent body 21 had a density of 0.20 g/cm³The density of the inner layer absorbent body 22 is 0.45 g/cm³The wall thickness is set to 2mm to 3.5mm, so that the absorbent body has high strength. In this embodiment, the lower end of the thickened handle 1 also serves as an upper baffle 12, and the absorber 2 is fixed together with a circular arc-shaped lower baffle 14.

3 fig. 3 6 3 is 3 a 3 schematic 3 view 3 of 3 the 3 section 3 a 3- 3 a 3 in 3 fig. 35 3. 3 In this embodiment, the outer layer absorber 21 has a toothed cross-sectional profile to increase the effect of capturing epithelial cells when rubbing against the gums.

In conclusion, the liquid collecting device of the invention has simple structure and convenient manufacture, and the radial telescopic axial insertion holes 23 which are formed by bonding the bi-component fibers and arranged in the absorption body 2 are used for fixing the absorption body 2 between the upper baffle plate 12 and the lower baffle plate 14, thereby greatly reducing the manufacturing cost and ensuring that the absorption body can not fall off in the using process. The liquid collecting device can be widely applied to various medical detection occasions and has good social significance and economic value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes be made by those skilled in the art without departing from the spirit and technical spirit of the present invention, and be covered by the claims of the present invention.

Claims

1. A liquid collecting device is provided with a handle (1), a sampling rod (13) and an absorber (2) coated on the peripheral wall of the sampling rod (13),

the absorber (2) comprises an outer layer absorber (21) and an inner layer absorber (22), the inner peripheral wall of the outer layer absorber (21) and the outer peripheral wall of the inner layer absorber (22) are bonded with each other, and the density of the outer layer absorber (21) is smaller than that of the inner layer absorber (22);

the inner layer absorber (22) has radially extendable and retractable axial insertion holes (23).

2. A liquid acquisition device according to claim 1, characterized in that the density of the outer absorbent body (21) is 0.035-0.20 g/cm³The density of the inner layer absorber (22) is 0.15-0.45 g/cm³。

3. The fluid acquisition device according to claim 1, wherein the inner absorbent body (22) has a wall thickness of 0.2mm to 3.5 mm.

4. The liquid acquisition device according to claim 1, wherein the outer layer absorbent body (21) and the inner layer absorbent body (22) are made of a bicomponent fiber bond.

5. A liquid acquisition device according to claim 1, characterized in that the absorbent body (2) has an axial compression strength which is greater than a radial compression strength.

6. The fluid collection device according to claim 1, further comprising an upper baffle (12) and a lower baffle (14) disposed at both ends of the sampling rod (13), wherein the upper baffle (12) is fixedly connected to an end of the handle (1).

7. The fluid collection device of claim 6, wherein the cross-sectional area of the lower baffle (14) decreases from top to bottom, and the maximum cross-sectional area of the lower baffle (14) is greater than the inner diameter of the receptacle (23) and less than the maximum expanded inner diameter of the receptacle (23).

8. The fluid collection device according to claim 6, wherein the handle (1), the upper baffle (12), the sampling rod (13) and the lower baffle (14) are integrally formed.

9. The fluid collection device of claim 6, wherein the lower baffle is circular in cross-section.

10. The liquid acquisition device according to claim 6, wherein a liquid acquisition indicating member (3) is provided between said absorbent body (2) and said top baffle (12).