CN219506625U - Reagent drop bottle - Google Patents

Abstract

The utility model provides a reagent dripping bottle, which comprises a bottle body and a dripping cover arranged at the opening end of the bottle body, wherein the dripping cover comprises a plug-in part and a drip tube with one end fixed at the center of the top of the plug-in part, the other end of the drip tube extends in the direction away from the plug-in part, the drip tube is of a tubular structure which is penetrated up and down, a flange is arranged on the peripheral wall of the interior of the drip tube, one end of the flange is arranged in the drip tube, the other end of the flange extends in the direction of the plug-in part until the flange is arranged in the plug-in part, the inner diameter of the flange is smaller than the inner diameter of the drip tube, and the height difference exists between the top end of the flange and the top end of the drip tube. According to the reagent dripping bottle, the inner diameter of the flange arranged in the drip tube is smaller than that of the drip tube, so that the contact surface of the inner wall of the drip tube is reduced when bubbles are sucked into the drip tube, the adhesive force is reduced, the bubbles are easy to separate from the inner wall of the drip tube, and the problem that sample liquid cannot be extruded due to the fact that the bubbles are blocked in the drip tube is solved.

Description

Reagent drop bottle

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to a reagent dripping bottle.

Background

In the antigen detection in medical clinical work, the conventional operation is to put a sample collected by a swab into eluent of a sample adding bottle, then to put the mouth of the sample adding bottle after the elution, and to drop the sample in the sample adding bottle onto test paper for detection by extruding the body of the sample adding bottle.

When the sample solution is dripped, 3-4 drops of the sample solution are required to be dripped so as to ensure that sufficient samples react with test paper to obtain a detection result. Due to the limitations in the size and material of the body, one squeeze is often insufficient to squeeze out a sufficient number of droplets, requiring multiple squeeze operations. After the bottle body is extruded for the first time, the bottle body is changed into a state of being not extruded, the internal space of the bottle body is enlarged, air can be sucked, the sucked air can be adsorbed on the inner wall near the liquid discharge channel of the bottle neck due to the action of surface tension, and can not enter the bottle body, so that when the bottle body is extruded for the next time to drip liquid, the air attached to the inner wall near the liquid discharge channel of the bottle neck can be extruded before the sample liquid, at the moment, the same bottle body deformation as the first time extrusion can not extrude the sample liquid, larger extrusion force is needed, the sample liquid can not be extruded under the condition that the bottle body deformation is maximum at the more extreme, the usability of the sample adding bottle is affected.

Disclosure of Invention

In view of the above, the present utility model aims to provide a reagent dropping bottle, which solves the problem that liquid in the dropping bottle is difficult to squeeze out in the process of multiple squeezing.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a reagent dropwise add bottle, includes the body and installs the drop lid of body open end, the drop lid includes grafting portion and one end is fixed the burette of grafting portion top central point put, the other end of burette is to keeping away from the direction of grafting portion extends, the burette is the tubular structure that link up from top to bottom, set up the flange on the inside perisporium of burette, in the burette is arranged in to flange one end, its other end to grafting portion direction extends until arranging in the grafting portion, the internal diameter of flange is less than the internal diameter of burette, the flange top with there is the difference in height between the burette top

Further, the diameter of the inner diameter of the flange is 0.5 mm-1.5 mm.

Further, the ratio of the flange top end inner diameter to the dropper inner diameter is (1-3): 5.

further, the ratio of the flange inner diameter to the flange height is (0.5-2): 2.

further, the flange is longitudinally sectioned, and the inner section of the flange is rectangular or isosceles trapezoid.

Further, the flange is coaxial with the centerline of both the drip tubes.

Further, the outer peripheral wall of the lower portion of the plug part is contracted towards the central axis direction of the plug part until the outer diameter of the bottom end of the plug part is smaller than the inner diameter of the opening end of the bottle body, so that the plug part can be smoothly inserted into the opening end of the bottle body.

Furthermore, the outer diameter of the upper part of the plug-in part is not smaller than the inner diameter of the opening end of the bottle body, and the plug-in part is in interference fit with the opening end of the bottle body.

Furthermore, the top of the plug-in part extends towards the peripheral side to form a connecting part, the tail end of the connecting part is bent towards the bottom of the plug-in part to form an extending part, and the inner peripheral wall of the extending part and the outer peripheral wall of the opening end of the bottle body are provided with a mutually matched fastening structure or a threaded structure.

Further, the top end of the drop cover is sealed by a cover cap.

Compared with the prior art, the reagent dropping bottle has the following advantages:

1. the inner diameter of the flange arranged in the drip tube is smaller than the inner diameter of the drip tube, so that the contact surface of the inner wall of the drip tube is reduced when bubbles are sucked into the drip tube, the adhesive force is reduced, the bubbles are easy to separate from the inner wall of the drip tube, and the problem that sample liquid cannot be extruded due to the fact that the bubbles are blocked in the drip tube is prevented;

2. the flange is arranged, so that the liquid can be extruded without applying excessive extrusion force when the bottle body is extruded for many times;

3. the setting of drop lid makes reagent bottle play liquid measure can be controlled by people.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present utility model;

FIG. 2 is a longitudinal cross-sectional view of the whole structure according to embodiment 1 of the present utility model;

FIG. 3 is a schematic view of a drop cap according to embodiment 1 of the present utility model;

FIG. 4 is a longitudinal cross-sectional view of a drop cap according to example 1 of the present utility model;

fig. 5 is a longitudinal sectional view of a drop cap according to embodiment 2 of the present utility model.

Reference numerals illustrate:

1-a bottle body;

2-drop cap, 21-drop tube, 22-plug-in part, 23-connecting part, 24-flange, 25-annular ring, 26-extension part;

3-cap.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The utility model can ensure smooth liquid outlet when the reagent bottle is used, reduces the influence of bubbles on the wall of the drip tube on the smoothness of liquid outlet extruded next time in the process of extruding for multiple times, and ensures that a user can extrude the liquid in the reagent bottle for multiple times without applying more force to the bottle body.

As shown in fig. 1 to 4, the utility model relates to a reagent dropping bottle, which comprises a dropping cover 2, wherein the dropping cover 2 is arranged at the opening end of a bottle body 1, and a cap 3 is arranged at the opening end of the bottle body 1 to seal the outlet of the dropping cover 2. In order to ensure that the liquid outlet amount of the reagent bottle is controllable, the diameter of the liquid outlet end of the drop cover 2 is smaller than that of the opening end of the bottle body 1.

The drop cover 2 comprises a plug-in part 22 and a drop tube 21 with one end fixed at the center of the top of the plug-in part 22, the other end of the drop tube 21 extends towards the direction far away from the plug-in part 22, the drop tube 21 and the plug-in part 22 are of hollow structures, the intersection of the bottom end of the drop tube 21 and the top wall of the plug-in part 22 is of a hollow structure, namely, the drop tube 21 is of a tubular structure which is penetrated up and down, the plug-in part 22 is inserted into the open end of the bottle body 1, the outer peripheral wall of the plug-in part 22 is tightly attached to the inner peripheral wall of the open end of the bottle body 1, the positioning and sealing functions are achieved, the bottom of the plug-in part 22 is hollow, a liquid outlet channel can be formed between the inside of the plug-in part 22 and the drop tube 21, and the liquid outlet function of the open end of the bottle body 1 is replaced after the liquid outlet function is installed.

The external diameter of the upper part of the plug-in part 22 is not less than the internal diameter of the open end of the bottle body 1, and the external peripheral wall of the lower part of the plug-in part 22 contracts towards the central axis direction of the plug-in part 22, so that the external diameter of the bottom end of the plug-in part 22 is less than the internal diameter of the open end of the bottle body 1, and the plug-in part 22 can be conveniently inserted into the open end of the bottle body 1 and the open end of the bottle body 1 is plugged. In order to enable the drop cap 2 to be more firmly installed on the bottle body 1 and increase the tightness of the opening end of the bottle body 1, the top surface of the plug-in part 22 extends towards the peripheral side to form the connecting part 23, the tail end of the connecting part 23 bends towards the bottom of the plug-in part 22 to form the extending part 26, a buckle structure or threaded connection matched with the opening end of the bottle body 1 is arranged in the extending part 26, the stability is increased, and the drop cap 2 is not extruded due to the change of the internal pressure when the bottle body 1 is extruded. Specifically, an annular ring 25 is provided inside the connecting portion 23 for ensuring tightness. The annular ring 25 is made of silica gel in this embodiment. In other embodiments the annular ring 25 may not be provided.

In other embodiments, the plugging portion 22 may only have a top surface, a portion of the plugging portion inserted into the bottle body 1 is removed, and an annular ring 23 is disposed at a joint portion between the open end of the bottle body 1 and the connecting portion 23 for sealing the bottle body and the drop cap 2, and the extending portion 26 may be connected to the open end of the bottle body through threads or a snap connection.

The inner peripheral wall of the cap 3 and the outer peripheral wall of the bottle body 1 are respectively provided with mutually screwed threads, so that the cap 3 can be firmly fixed on the bottle body 1, and the inner wall of the top end of the cap 3 is attached to the top of the drop cover 2. In order to increase the tightness between the cap 3 and the drop cover 2, a sealing gasket can be arranged at the joint of the cap 3 and the drop cover 2, so that the pollution caused by the outflow of the liquid in the bottle body 1 in the transportation process is prevented. The sealing pad can be made of any material with sealing effect such as a silica gel pad.

If the bottle body 1 is not preloaded with liquid, the top of the cap 3 may not be attached to the top of the drop cap 2, or a gasket may not be provided.

Embodiment one:

as shown in fig. 2, the liquid inside the bottle body 1 flows out along the dropper 21 during extrusion, so that in order to make the liquid inside the bottle body 1 more smooth in the prior art, the diameter of the dropper 21 is designed to be larger during manufacturing, and the dropping of the sample liquid needs to be performed while observing the situation, so that repeated dropping is required, after the first dropping of the sample liquid, the liquid at the liquid outlet end of the dropper 21 and the air are sucked together, the sucked air can be adsorbed on the inner wall of the dropper 21 near the liquid discharge channel due to the action of surface tension, and cannot enter the bottle body 1, the bottle body 1 cannot be extruded when the same force is applied next time, the puzzlement is caused for dropping the sample liquid, the force for extruding the bottle body 1 is increased, and the trouble to a user is possibly caused, and the damage to the bottle body 1 is possibly caused.

In this case, the flange 24 is provided in the drip tube 21, the flange 24 is provided along the inner peripheral wall of the drip tube 21, the outer wall of the flange 24 is fixed to the inner wall of the drip tube 21, and the flange 24 and the inner wall of the drip tube 21 are integrally formed, and one end of the flange 24 is disposed in the drip tube 21 and the other end extends toward the insertion portion until being disposed in the insertion portion 22. The flange 24 is of a tubular structure, the inner cross section of the flange 24 is rectangular, the flange 24 is coaxial with the central line of the drip tube 21, the inner diameter of the flange 24 is smaller than the inner diameter of the drip tube 21, the top surface of the flange 24 is lower than the top surface of the drip tube 21, a part of the flange 24 is embedded in the drip tube 21, the longitudinal cross section of the drip tube 21 is taken, a certain height difference exists between the top surface of the drip tube 21 and the top surface of the flange 24, a circular platform is formed at the joint of the top end of the flange 24 and the inner wall of the drip tube 21, a certain height difference exists between the top surfaces of the flange 24 in the drip tube 21, the stability of liquid discharge amount can be ensured in the liquid discharge process, the liquid and bubbles can be ensured to be quickly returned to the inside of the drip tube 21 in the backflow process, meanwhile, the platform between the flange 24 can play a role of dividing the bubbles which flow back into the flange 24 from the drip tube 21, and the bubbles are easier to be separated from the inner wall in the flange 24 due to the inner diameter difference between the flange 24, and the liquid can be more easily refluxed into the bottle body 1 together.

Note that the difference in height between the top surface of the drip tube 21 and the top surface of the flange 24 is not limited.

Specifically, too small an inner diameter of the flange 24 directly affects the extrusion speed of the liquid, and too large an inner diameter of the flange 24 causes small bubbles to adhere to the inner wall of the flange 24, affecting the extrusion of the subsequent liquid. The diameter of the inner diameter of the flange 24 is 0.5mm to 1.5mm, preferably 0.8mm. The inner diameter of the drip tube 21 is not suitable to be too large, if the inner diameter of the drip tube 21 is too large, the extruded liquid outlet amount is uncontrolled, bubbles are firmly adsorbed on the inner wall of the drip tube 21 due to too large adhesive force in the backflow process, inconvenience is caused to the subsequent repeated extrusion liquid outlet, and based on the fact, the ratio of the inner diameter of the flange 24 to the inner diameter of the drip tube 21 is (1-3): 5, preferably 2:5.

in the process that liquid flows back together due to the pressure difference between the inside and the outside of the bottle body 1, part of air is mixed in the liquid in the back flow return stroke to form bubbles, the bubbles are subjected to the cutting action of the edge of the circular annular platform when passing through the junction of the dropper 21 and the flange 24, the inner diameter of the flange 24 relative to the inner diameter of the dropper 21 is suddenly reduced, the bubbles are divided and extruded into a plurality of small bubbles, the inner diameter of the flange 24 is smaller, the small bubbles are easier to separate from the inner wall of the flange 24, the bubbles are flowed into the bottle body 1 together, and a certain distance is required in the process that the bubbles become the small bubbles until the bubbles separate from the inner wall of the flange 24, so the whole length of the flange 24 is required to be matched with the inner diameter of the flange 24, and the ratio of the inner diameter of the flange 24 to the height of the flange 24 is (0.5-2) based on the fact: 2, preferably the ratio of the two is 1:2. at this height, the air bubbles in the drip tube 21 are cut and squeezed into small air bubbles when entering the inside of the flange 24, and enough space is left for the air bubbles to escape from the inner wall of the flange 24 and enter the bottle body 1.

In the implementation process: in the process of dripping, the bottle body 1 needs to be inverted, liquid in the bottle body 1 enters the plug-in part 22 at the opening end of the bottle body 1, the tail end of the bottle body 1 is pressed, gas in the bottle body 1 is extruded, the gas in the bottle body 1 pushes the liquid to flow towards the mouth of the dropper 21, liquid drops are formed from the head of the dropper 21, and the liquid drops under the action of gravity. In the process of dripping liquid into a reaction device, whether the number of dripped liquid reaches the requirement or not and the dripping is excessive or not is required to be observed, an operator is required to repeatedly squeeze the bottle body 1 for dripping, the extrusion force applied to the bottle body 1 is removed after the first dripping, the bottle body 1 is restored to be in an inverted state, the air pressure in the bottle body 1 is smaller than the air pressure outside the bottle body 1, in order to balance the air pressure outside the bottle body 1, air is sucked into the bottle body 1 along with the liquid along with the drip tube 21, the sucked air forms bubbles under the wrapping of the liquid, the bubbles enter the flange 24 along with the liquid, the bubbles are divided and squeezed into small bubbles in the operation process, the small bubbles are separated from the inner wall of the flange 24 in the suction process, and enter the bottle body 1 along with the liquid, after entering the bottle body 1, the small bubbles rise to the bottom end of the bottle body 1, the bottle body 1 is still in an inverted state, the liquid in the bottle body 1 is filled at the opening end of the bottle body 1, the next extrusion liquid is extruded on the bottle body 1, and the liquid can be extruded by the same force as the previous time, and the user experience is improved.

Embodiment two:

the embodiment is improved based on the embodiment 1, and the specific improvement is as follows: the inner diameter of the flange 24 positioned in the drip tube 21 gradually decreases along the direction of the tail end of the drip tube 21, the tail end of the flange 24 passes through the bottom end of the drip tube 21 and is arranged in the plug-in part 22, and the part of the flange 24 positioned in the plug-in part 22 is in a hollow cylinder structure, and the inner diameter of the flange is consistent with the inner diameter of the flange 24 positioned at the bottom end of the drip tube 21.

The longitudinal section of the inner wall of the flange 24 positioned in the dropper 21 is isosceles trapezoid, and the length of the upper side positioned in the dropper 21 is larger than that of the bottom side positioned at the bottom end of the dropper 21; the inner wall of the flange 24 located inside the insertion portion 22 has a rectangular longitudinal section, and the entire longitudinal section inside the flange 24 has a funnel shape.

The maximum inner diameter of the flange 24 is smaller than the inner diameter of the dropper 21, and an annular platform is formed at the junction of the top surface of the flange 24 and the inner wall of the dropper 21.

The pressure applied to the bottle body 1 is removed after the first dripping, the bottle body 1 is restored to be in an original state, in order to balance the internal and external air pressure of the bottle body 1, air can be sucked into the bottle body 1 along the dropper 21, the sucked air forms bubbles under the wrapping of liquid, the bubbles enter the flange 24 along with the liquid from the dropper 21, the inner diameter of the flange 24 through which the bubbles flow is gradually reduced after passing through the platform, the bubbles are divided into a plurality of small bubbles after being divided and extruded through the platform and the flange 24, the small bubbles are gradually separated from the inner wall of the flange 24 along with the gradual reduction of the inner diameter of the flange 24, the liquid can be extruded after the liquid flows back into the bottle body 1 together, the same force as the last time is applied when the bottle body 1 is extruded next time, the bottle body 1 is convenient for a user to use, and meanwhile, the damage to the bottle body 1 caused by the excessively large applied force can be prevented.

The remaining structures of the present embodiment and the dimensional ratios between the structures are the same as those of the embodiments, and will not be described in detail herein.

It should be noted that, the inner diameter of the flange 24 and the inner diameter in the relevant proportion are the inner diameter of the flange 24 at the bottom end of the drip tube 21 and inside the insertion portion 22.

In the description of the present utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships conventionally put in use of the inventive product, are merely for convenience in describing the present utility model, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like, are used merely for distinguishing between descriptions and not necessarily for indicating a relative importance.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. The utility model provides a reagent dropwise add bottle, includes body (1) and installs drop lid (2) of body (1) open end, drop lid (2) are in including grafting portion (22) and one end are fixed drip tube (21) of grafting portion (22) top central point put, the other end of drip tube (21) is to keeping away from the direction of grafting portion (22) extends, drip tube (21) are tubular structure that link up from top to bottom, its characterized in that: a flange (24) is arranged on the inner peripheral wall of the dropper (21), one end of the flange (24) is arranged in the dropper (21), the other end of the flange extends towards the inserting portion (22) until the flange is arranged in the inserting portion (22), the inner diameter of the flange (24) is smaller than the inner diameter of the dropper (21), and a height difference exists between the top end of the flange (24) and the top end of the dropper (21).

2. A reagent drop bottle as claimed in claim 1, wherein: the diameter of the inner diameter of the flange (24) is 0.5 mm-1.5 mm.

3. A reagent drop bottle as claimed in claim 2, wherein: the ratio of the inner diameter of the top end of the flange (24) to the inner diameter of the dropper (21) is (1-3): 5.

4. a reagent drop bottle as claimed in claim 2, wherein: the ratio of the inner diameter of the flange (24) to the height of the flange (24) is (0.5-2): 2.

5. a reagent drop bottle according to any one of claims 1-4, wherein: the flange (24) is longitudinally sectioned, and the inner section is rectangular or isosceles trapezoid.

6. A reagent drop bottle as claimed in claim 5, wherein: the flange (24) is coaxial with the centre line of both the drip pipes (21).

7. A reagent drop bottle as claimed in claim 1, wherein: the outer peripheral wall of the lower part of the plug-in part (22) is contracted towards the central axis direction of the plug-in part (22) until the outer diameter of the bottom end of the plug-in part (22) is smaller than the inner diameter of the opening end of the bottle body (1), so that the plug-in part (22) can be smoothly inserted into the opening end of the bottle body (1).

8. A reagent drop bottle as claimed in claim 7, wherein: the outer diameter of the upper part of the plug-in connection part (22) is not smaller than the inner diameter of the opening end of the bottle body (1), and the plug-in connection part (22) is in interference fit with the opening end of the bottle body (1).

9. A reagent drop bottle as claimed in claim 7, wherein: the top of the plug-in part (22) extends towards the peripheral side to form a connecting part (23), the tail end of the connecting part (23) is bent towards the bottom of the plug-in part (22) to form an extending part (26), and the inner peripheral wall of the extending part (26) and the outer peripheral wall of the opening end of the bottle body (1) are provided with mutually matched fastening structures or thread structures.

10. A reagent drop bottle according to any one of claims 1-4, 6-9, wherein: the top end of the drop cover (2) is sealed by a cap (3).