An enclosed dropper device for detection and its usage method

Abstract

The present invention discloses a dropper device for closed detection and its usage method, including a liquid storage sac, a closed sleeving mechanism, and a dropper head; the present invention can achieve various operation modes. By holding the positioning cylinder with one hand and rotating the lower connecting ring with the other hand, the closing ring is driven to move upward, so that the closing ring closes the periphery of the lower end of the annular liquid storage tank. In this way, after the whole structure is inverted, the annular liquid storage tank is closed. When squeezing the liquid obliquely, the liquid in the annular liquid storage tank can be prevented from overflowing. It can also close the annular liquid storage tank before the whole structure is inverted. In this way, the liquid can be discharged completely in batches, and the use is flexible and convenient.

Description

Technical Field

[0001] The present invention relates to a dropper device for closed detection and a method for using the same. Background Art

[0002] A dropper device is a device that extrudes liquid from the inside of a tube body. It is widely used in medical testing, especially an essential medical device for virus detection. For example, in the patent with the publication number CN 214974114 U, the patent includes a dropper tip and a tube body. The dropper tip is inserted into the tube body, and then the whole structure is inverted. Part of the liquid will enter the liquid storage cavity, and the remaining liquid is discharged from the liquid outlet tube. In this way, a part of the liquid can be stored in the liquid storage cavity to reasonably control the volume of the discharged liquid. However, in this structure, when the whole structure is inverted and the liquid is discharged downward, if it is not placed horizontally, the liquid in the liquid storage cavity will tilt and be discharged from the liquid outlet tube, so that the volume of the discharged liquid increases. Once the volume of the liquid needs to be accurately controlled, it will be inconvenient to use. Generally, the most comfortable way for the operator is to invert the whole structure at a certain inclination angle and then squeeze out the liquid. However, now it is necessary to keep it vertical, which increases the inconvenience for the operator. In addition, when it is not necessary to reduce the volume of the discharged liquid and it is necessary to discharge all the liquid in batches for multiple detections, the liquid entering the liquid storage cavity is not easy to discharge when the device is inverted, so the flexibility of use is reduced. Summary of the Invention

[0003] Aiming at the deficiencies of the above-mentioned prior art, the problem solved by the present invention is to provide a dropper device for closed detection and a method for using the same, which are convenient and flexible to use.

[0004] To solve the above problems, the technical solutions adopted by the present invention are as follows:

[0005] A dropper device for closed detection, comprising a liquid storage bladder, a closed socket mechanism, and a dropper head; the liquid storage bladder has a structure with its perimeter and bottom closed and its upper end open; the closed socket mechanism includes a lower connecting ring, a positioning cylinder, a vertical cylinder, a connecting rod, a moving sleeve, and a closing ring; the upper perimeter of the lower connecting ring is provided with a positioning cylinder, and the lower connecting ring is rotationally clamped to the lower end of the positioning cylinder; a vertical cylinder is installed in the middle of the lower connecting ring and the positioning cylinder; two connecting rods are respectively installed on both sides of the lower end of the vertical cylinder, and the outer ends of the connecting rods are respectively fixed to the side walls of the lower connecting ring; a moving sleeve is threadedly connected to the vertical cylinder; a closing ring is installed on the outer perimeter of the moving sleeve; the closing ring is slidably clamped up and down in the positioning cylinder, and the outer perimeter of the closing ring is in fitting connection with the inner walls of the perimeter of the positioning cylinder; the dropper head includes a plug-in ring sleeve, a middle dropper tube, and a top abutting plate; a middle dropper tube is fixedly inserted through the middle of the top abutting plate; a plug-in ring sleeve is installed on the lower perimeter of the top abutting plate; an annular liquid storage groove is formed between the outer perimeter of the middle dropper tube and the inner perimeter of the plug-in ring sleeve; the plug-in ring sleeve is inserted into the upper end of the positioning cylinder and is in sealed connection; the lower connecting ring rotates to drive the closing ring to move upward and close the lower perimeter of the annular liquid storage groove.

[0006] Further, a connecting column is respectively provided on both sides of the moving sleeve, and the outer ends of the connecting columns are connected to both inner ends of the closing ring.

[0007] Further, a positioning slide bar is respectively provided on both sides of the lower end of the closing ring; a positioning slide groove is respectively provided on both sides inside the positioning cylinder; the positioning slide bar is slidably clamped up and down on the positioning slide groove.

[0008] Further, a rotationally clamping ring is provided on the upper perimeter of the lower connecting ring; an annular clamping groove is provided on the lower perimeter of the positioning cylinder; the lower connecting ring is rotationally clamped to the annular clamping groove on the lower perimeter of the positioning cylinder through the rotationally clamping ring on the upper perimeter; a sealing pressing ring is provided on the inner perimeter of the upper perimeter of the lower connecting ring; the lower perimeter of the positioning cylinder is pressed against the upper perimeter of the sealing pressing ring.

[0009] Further, an outer abutting ring is provided on the outer perimeter of the upper end of the liquid storage bladder, a sealing ring body is provided on the inner perimeter of the outer abutting ring, and an abutting step surface is provided below the inner side of the outer abutting ring; a plug-in ring is provided on the inner perimeter of the lower perimeter of the lower connecting ring; the plug-in ring is inserted into the inner perimeter of the outer abutting ring and is in sealed connection with the inner perimeter of the sealing ring body; the lower end of the plug-in ring abuts against the abutting step surface.

[0010] Further, an annular sealing ring is provided on the outer perimeter of the plug-in ring sleeve; the outer perimeter of the annular sealing ring is in sealed connection with the inner perimeter of the upper perimeter of the positioning cylinder.

[0011] Further, the liquid storage bladder is made of a flexible material.

[0012] A method for using a dropper device for closed detection is as follows: When volume reduction and discharge are required, invert the entire device so that the reagent and sample inside the liquid storage sac are inverted, allowing some of the reagent and sample to enter the annular liquid storage tank. Then, hold the positioning cylinder with one hand and rotate the lower connecting ring with the other hand to drive the sealing ring upward, causing the sealing ring to seal around the lower end of the annular liquid storage tank. In this way, the excess liquid is sealed and stored. Finally, squeeze the liquid storage sac to discharge the remaining reagent and sample through the middle dropping tube. When all the liquid needs to be discharged in several batches, first hold the positioning cylinder with one hand and rotate the lower connecting ring with the other hand to drive the sealing ring upward, causing the sealing ring to seal around the lower end of the annular liquid storage tank, thus pre-sealing the annular liquid storage tank. Then, invert the entire device so that the reagent and sample inside the liquid storage sac are inverted. Finally, squeeze the liquid storage sac to discharge the reagent and sample in batches through the middle dropping tube.

[0013] The beneficial effects of the present invention are as follows:

[0014] The present invention can achieve various operation modes. By holding the positioning cylinder with one hand and rotating the lower connecting ring with the other hand to drive the sealing ring upward, the sealing ring seals around the lower end of the annular liquid storage tank. In this way, after the entire structure is inverted, the annular liquid storage tank is sealed, preventing the liquid in the annular liquid storage tank from overflowing when squeezing the liquid obliquely. It can also seal the annular liquid storage tank before inverting the entire structure, enabling all the liquid to be discharged in batches, with flexible and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the present invention with the sealing ring not sealing the annular liquid storage tank.

[0016] Figure 2 It is a schematic structural diagram of the present invention with the sealing ring sealing the annular liquid storage tank.

[0017] Figure 3 It is a schematic structural diagram of the dropping head of the present invention.

[0018] Figure 4 It is a schematic structural diagram of the closed socketing mechanism of the present invention.

[0019] Figure 5 It is a schematic structural diagram of the liquid storage sac of the present invention.

[0020] Figure 6 For the present invention Figure 1 Schematic diagram of the partial enlarged structure in the middle.

[0021] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure on one side. Embodiment

[0022] The following further details the content of the present invention in conjunction with the accompanying drawings.

[0023] As Figures 1 to 7 shown, a dropper device for closed detection includes a liquid storage sac 1, a closed socketing mechanism 2, and a dropper head 3; the liquid storage sac 1 has a structure with its periphery and bottom closed and its upper end open; the closed socketing mechanism 2 includes a lower connecting ring 21, a positioning cylinder 22, a longitudinal column 23, a connecting rod 24, a moving sleeve 25, and a closing ring 26; the upper periphery of the lower connecting ring 21 is provided with the positioning cylinder 22, and the lower connecting ring 21 is rotationally clamped to the lower end of the positioning cylinder 22; a longitudinal column 23 is installed between the lower connecting ring 21 and the positioning cylinder 22; two connecting rods 24 are respectively installed on both sides of the lower end of the longitudinal column 23, and the outer ends of the connecting rods 24 are respectively fixed to the side walls of the lower connecting ring 21; a moving sleeve 25 is screwed onto the longitudinal column 23; a closing ring 26 is installed on the outer periphery of the moving sleeve 25; the closing ring 26 is slidably clamped up and down in the positioning cylinder 22, and the outer periphery of the closing ring 26 is in fitting connection with the inner walls of the four sides of the positioning cylinder 22; the dropper head 3 includes a plug-in ring sleeve 33, a middle dropper tube 32, and a top abutting plate 31; a middle dropper tube 32 is fixedly inserted through the middle of the top abutting plate 31; a plug-in ring sleeve 33 is installed on the lower periphery of the top abutting plate 31; an annular liquid storage tank 34 is formed between the outer periphery of the middle dropper tube 32 and the inner periphery of the plug-in ring sleeve 33; the plug-in ring sleeve 33 is inserted into the upper end of the positioning cylinder 22 and is hermetically connected; the lower connecting ring 21 rotates to drive the closing ring 26 to move upward and close the lower periphery of the annular liquid storage tank 34.

[0024] As Figures 1 to 7 shown, for the convenience of connecting the moving sleeve 25 and the closing ring 26, further, a connecting column 231 is respectively provided on both sides of the moving sleeve 25, and the outer ends of the connecting columns 231 are connected to both ends of the inner side of the closing ring 26.

[0025] As Figures 1 to 7 shown, for improving the longitudinal movement stability of the closing ring 26, further, a positioning slide bar 261 is respectively provided on both sides of the lower end of the closing ring 26; a positioning chute 221 is respectively provided on both sides inside the positioning cylinder 22; the positioning slide bar 261 is slidably clamped up and down on the positioning chute 221.

[0026] As Figures 1 to 7As shown, in order to improve the rotational stability of the lower connecting ring 21, further, a rotating clamping ring 212 is provided around the upper end of the lower connecting ring 21; an annular clamping groove 222 is provided around the lower end of the positioning cylinder 22; the lower connecting ring 21 is rotationally clamped on the annular clamping groove 222 around the lower end of the positioning cylinder 22 through the rotating clamping ring 212 around the upper end; a sealing pressing ring 213 is provided inside the upper end around the lower connecting ring 21; the lower end around the positioning cylinder 22 is pressed against the upper end around the sealing pressing ring 213.

[0027] As Figures 1 to 7 shown, in order to ensure the connection sealing performance between the liquid storage sac 1 and the lower connecting ring 21, further, an outer abutting ring 11 is provided on the outer side around the upper end of the liquid storage sac 1, a sealing ring body 12 is provided inside the outer abutting ring 11 around the circumference, and an abutting step surface 13 is provided below the inner side of the outer abutting ring 11; an inserting ring 211 is provided inside the lower end around the lower connecting ring 21; the inserting ring 211 is inserted into the inner side around the outer abutting ring 11 and is in sealing abutment with the inner side around the sealing ring body 12; the lower end of the inserting ring 211 abuts against the abutting step surface 13.

[0028] As Figures 1 to 7 shown, in order to ensure the sealing performance between the inserting ring sleeve 33 and the positioning cylinder 22, further, an annular sealing ring 331 is provided on the outer side around the inserting ring sleeve 33; the outer side around the annular sealing ring 331 is in sealing abutment with the inner side around the upper end of the positioning cylinder 22. Further, the liquid storage sac 1 is made of a flexible material.

[0029] As Figures 1 to 7 shown, a method for using a closed - type detection dropper device is as follows: When it is necessary to discharge with a reduced volume, invert the entire device so that the reagent and sample inside the liquid storage sac 1 are inverted, causing part of the reagent and sample to enter the annular liquid storage tank 34. Then, hold the positioning cylinder 22 with one hand and rotate the lower connecting ring 21 with the other hand to drive the closing ring 26 to move upward so that the closing ring 26 closes the lower end around the annular liquid storage tank 34, thus storing the excess liquid in a sealed manner. Finally, squeeze the liquid storage sac 1 so that the remaining reagent and sample are discharged from the middle dropping tube 32; When it is necessary to discharge all the liquid in several batches, first hold the positioning cylinder 22 with one hand and rotate the lower connecting ring 21 with the other hand to drive the closing ring 26 to move upward so that the closing ring 26 closes the lower end around the annular liquid storage tank 34, thus pre - closing the annular liquid storage tank 34. Then, invert the entire device so that the reagent and sample inside the liquid storage sac 1 are inverted. Finally, squeeze the liquid storage sac 1 so that the reagent and sample are discharged from the middle dropping tube in batches.

[0030] The present invention can achieve various operation modes. By holding the positioning cylinder 22 with one hand and rotating the lower connecting ring 21 with the other hand, the closing ring 26 is driven to move upward, so that the closing ring 26 closes around the lower end of the annular liquid storage tank 34. In this way, after the whole structure is inverted, the annular liquid storage tank 34 is closed. When squeezing the liquid obliquely, the liquid in the annular liquid storage tank 34 can be prevented from overflowing. It is also possible to close the annular liquid storage tank 34 before the whole structure is inverted. In this way, the liquid can be discharged in batches and completely, and the use is flexible and convenient.

[0031] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dropper device for closed detection, characterized in that, It includes a liquid storage bladder, a closed socket mechanism, and a drip head; the liquid storage bladder has a structure with its perimeter and bottom closed and its upper end open; the closed socket mechanism includes a lower connecting ring, a positioning cylinder, a vertical cylinder, a connecting rod, a movable sleeve, and a closing ring; the upper perimeter of the lower connecting ring is equipped with a positioning cylinder, and the lower connecting ring is rotationally clamped to the lower end of the positioning cylinder; a vertical cylinder is installed in the middle of the lower connecting ring and the positioning cylinder; on both sides of the lower end of the vertical cylinder, a connecting rod is installed respectively, and the outer ends of the connecting rods are fixed to the side walls of the lower connecting ring respectively; a movable sleeve is screwed onto the vertical cylinder; a closing ring is installed on the outer perimeter of the movable sleeve; the closing ring slides up and down and is clamped in the positioning cylinder, and the outer perimeter of the closing ring is in fitting connection with the inner walls of the perimeter of the positioning cylinder; the drip head includes a plugging ring sleeve, a middle drip tube, and a top abutting plate; a middle drip tube is fixedly inserted through the middle of the top abutting plate; a plugging ring sleeve is installed on the lower perimeter of the top abutting plate; an annular liquid storage groove is formed between the outer perimeter of the middle drip tube and the inner perimeter of the plugging ring sleeve; the plugging ring sleeve is inserted from the upper end of the positioning cylinder and is in sealed connection; the lower connecting ring rotates to drive the closing ring to move upward and close the lower perimeter of the annular liquid storage groove; on both sides of the movable sleeve, a connecting column is provided respectively, and the outer ends of the connecting columns are connected to both ends of the inner side of the closing ring.

2. The closed dropper device for detection according to claim 1, characterized in that, On both sides of the lower end of the closing ring, a positioning slide bar is provided respectively; on both sides of the inside of the positioning cylinder, a positioning slide groove is provided respectively; the positioning slide bar slides up and down and is clamped on the positioning slide groove.

3. The closed pipette device for detection according to claim 1, wherein, On the upper perimeter of the lower connecting ring, a rotational clamping ring is provided; on the lower perimeter of the positioning cylinder, an annular clamping groove is provided; the lower connecting ring is rotationally clamped to the annular clamping groove on the lower perimeter of the positioning cylinder through the rotational clamping ring on the upper perimeter; on the inner side of the upper perimeter of the lower connecting ring, a sealing pressure ring is provided; the lower perimeter of the positioning cylinder abuts against the upper perimeter of the sealing pressure ring.

4. The closed-type dropper device for detection according to claim 1, characterized in that, On the outer perimeter of the upper end of the liquid storage bladder, an outer abutting ring is provided, on the inner perimeter of the outer abutting ring, a sealing ring body is provided, and on the lower inner side of the outer abutting ring, an abutting step surface is provided; on the inner perimeter of the lower end of the lower connecting ring, a plugging ring is provided; the plugging ring is inserted into the inner perimeter of the outer abutting ring and is in sealed abutment with the inner perimeter of the sealing ring body; the lower end of the plugging ring abuts against the abutting step surface.

5. The closed pipette device for detection according to claim 1, wherein On the outer perimeter of the plugging ring sleeve, an annular sealing ring is provided; the outer perimeter of the annular sealing ring is in sealed abutment with the inner perimeter of the upper end of the positioning cylinder.

6. The closed dropper device for detection according to claim 1, wherein, The liquid storage bladder is made of a flexible material.

7. A method for using the closed-type dropper device according to claim 1, characterized in that, The steps are as follows: When volume reduction and discharge are required, invert the entire device so that the reagents and samples inside the liquid storage sac are inverted, causing some of the reagents and samples to enter the annular liquid storage tank. Then, hold the positioning cylinder with one hand all the time, and rotate the lower connecting ring with the other hand to drive the sealing ring to move upward, so that the sealing ring seals the lower periphery of the annular liquid storage tank. In this way, the excess liquid is sealed and stored. Finally, squeeze the liquid storage sac so that the remaining reagents and samples are discharged from the middle drip tube; When it is necessary to discharge all the liquid in several batches, first hold the positioning cylinder with one hand all the time, and rotate the lower connecting ring with the other hand to drive the sealing ring to move upward, so that the sealing ring seals the lower periphery of the annular liquid storage tank. In this way, the annular liquid storage tank is pre-sealed. Then, invert the entire device so that the reagents and samples inside the liquid storage sac are inverted. Finally, squeeze the liquid storage sac so that the reagents and samples are discharged from the middle drip tube in batches.

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