Piercing device of liquid storage bin

Abstract

The utility model discloses a piercing device of a liquid storage bin, which comprises a channel column pipe, a lower piercing mechanism and a flow channel plate, one side of the channel column pipe is provided with an accommodating cavity matched with a liquid storage tank, the lower piercing mechanism comprises a positioning pad and a second piercing head, the second piercing head is mounted on the flow channel plate, and the positioning pad is arranged in the accommodating cavity. A positioning pad matched with a positioning boss at one end of the liquid storage tank is mounted on the outer side of the second puncturing head; and a second micro-channel connected with the second puncturing head is arranged on the channel plate. After the separable liquid storage tank is loaded in the containing cavity of the channel column pipe, mutual positioning of the second puncturing head and the liquid storage tank positioning boss is achieved through the positioning pad, the liquid storage tank is punctured through the second puncturing head, a reagent in the liquid storage tank is drained to the second micro-channel, and the reagent is provided for downstream components; after the reagent in the liquid storage tank is used up, the liquid storage tank can be replaced after the reagent passes through the separation channel column pipe and the liquid storage tank, so that the flexibility of replacing the liquid storage tank and detecting items is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection device technical field, concretely relates to a kind of puncture device of liquid storage bin. BACKGROUND

[0002] Nucleic acid detection as one of important methods of in vitro diagnosis, has important role in the diagnosis and prognosis of disease. Among them, point-of-care testing (POCT) products are widely used in clinical testing, major epidemic detection, food safety monitoring, drug detection and alcohol detection and other public health fields. Compared with traditional department or laboratory diagnosis, POCT retains the core steps of "sampling-analysis-quality control-output", greatly reduces the diagnosis time, and is more flexible in detection space.

[0003] At present, POCT card box based on nucleic acid detection is mostly preloaded with reaction reagent before leaving factory, and is sealed. The types, volumes and quantities of preloaded reagents of POCT card boxes for different detection projects are also different. Such detection card box mostly does not have separable liquid storage bin, and the preloaded reagent also determines the use of the POCT card box, which limits the flexibility of POCT.

[0004] Therefore, it is necessary to design a puncture device for separable liquid storage bin to provide convenience for the use of separable liquid storage bin and reagent. UTILITY MODEL CONTENT

[0005] In view of the above technical problems existing in the prior art, the utility model provides a puncture device for liquid storage bin, which loads and punctures the liquid storage bin to provide reagent for downstream components.

[0006] The utility model discloses a puncture device for liquid storage bin, which comprises a channel column pipe, a lower puncture mechanism and a flow channel plate, one side of the channel column pipe is provided with a containing cavity matched with a liquid storage tank, the lower puncture mechanism comprises a positioning pad and a second puncture head, the second puncture head is installed on the flow channel plate, and the positioning pad matched with the positioning boss at one end of the liquid storage tank is installed on the outer side of the second puncture head; the flow channel plate is provided with a second micro-flow channel connected with the second puncture head.

[0007] Preferably, the outer side of the positioning pad is provided with a second spring matched with the liquid storage tank.

[0008] Preferably, the upper puncture mechanism further comprises a sliding member and a first puncture head installed on the inner side of the sliding member,

[0009] the upper puncture mechanism comprises a sliding member and a first puncture head installed on the inner side of the sliding member,

[0010] The sliding member is slidably installed on the upper side of the channel column pipe.

[0011] Preferably, the upper end face and the lower end face of the liquid storage tank are respectively provided with a sealing film.

[0012] Preferably, the upper side of the channel column pipe is provided with a limiting boss, and the clamping member on the lower side of the sliding member is matched with the limiting boss.

[0013] Preferably, the inner side of the sliding member is provided with a first spring, and the outer side of the first spring is matched with the limiting boss.

[0014] The first piercing head extends to the accommodating cavity through the limiting boss.

[0015] Preferably, the first piercing head is provided with a first micro flow channel which is in communication with the outside.

[0016] Preferably, after the second piercing head pierces the lower end face of the liquid storage tank, one end of the second micro flow channel is in communication with the inside of the liquid storage tank through the second piercing head, and the other end is in communication with a reagent mixing component downstream.

[0017] After the first piercing head pierces the upper end face of the liquid storage tank, the space on the upper side of the liquid storage tank is in communication with the outside air through the first micro flow channel.

[0018] Preferably, the piercing device is installed in the cartridge.

[0019] Compared with the prior art, the piercing device has the following beneficial effects: after the accommodating cavity of the channel column pipe is loaded with the separable liquid storage tank, the mutual positioning of the second piercing head and the positioning boss of the liquid storage tank is realized through the positioning pad, the liquid storage tank is pierced through the second piercing head, and the reagent in the liquid storage tank is drained to the second micro flow channel to provide the reagent for the downstream component; after the reagent in the liquid storage tank is used up, the liquid storage tank can be replaced after the channel column pipe and the liquid storage tank are separated, and the flexibility of replacing the liquid storage tank and the detection project is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is an exploded view of the liquid storage tank piercing device of the utility model;

[0021] Figure 2 is an assembly schematic view of the piercing device.

[0022] Marked in the figure: 1 piercing device, 2 upper piercing mechanism, 21 sliding member, 22 first piercing head, 23 first spring, 3 channel column pipe, 31 limiting boss, 32 accommodating cavity, 4 liquid storage tank, 42 positioning boss,

[0023] 6 lower piercing mechanism, 61 positioning pad, 62 second piercing head, 63 second spring, 8 flow channel plate, 81 second micro flow channel. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] The utility model will be further described in detail below in combination with the drawings:

[0026] A kind of piercing device 1 of liquid storage bin, as shown in Figure 1 And Figure 2 It includes passage column pipe 3, lower piercing mechanism 6 and flow passage plate 8, one side of passage column pipe 3 is provided with the accommodating cavity 32 matched with liquid storage tank 4, the lower piercing mechanism 6 includes positioning pad 61 and second piercing head 62, the second piercing head 62 is installed on flow passage plate 8, and the positioning pad 61 matched with the positioning boss 42 of one end of liquid storage tank 4 is installed on the outer side of second piercing head 62;Second microchannel 81 connected with second piercing head 62 is arranged on flow passage plate 8.

[0027] After the separable liquid storage tank is loaded in the accommodating cavity of passage column pipe, the mutual positioning of second piercing head 62 and the positioning boss of liquid storage tank is realized by positioning pad 61, the liquid storage tank 4 is pierced by second piercing head 62, and the reagent in the liquid storage tank 4 is drained to second microchannel 81, to provide reagent for downstream components;After the reagent in the liquid storage tank is used up, the liquid storage tank can be replaced after separating passage column pipe and liquid storage tank, and the flexibility of replacing liquid storage tank and detection project is improved.

[0028] Second spring 63 matched with the liquid storage tank 4 is arranged on the outer side of positioning pad 61.Under the condition that passage column pipe 3 is pressed, the liquid storage tank is pierced;Under the condition that passage column pipe 3 is released, the liquid storage tank 4 is separated by the elastic force of second spring 63.

[0029] Figure 1 And Figure 2 Upper piercing mechanism 2 is also shown, and the upper piercing mechanism 2 includes sliding member 21 and first piercing head 22 installed on the inner side of sliding member 21, and the sliding member 21 is slidably installed on the upper side of passage column pipe 3.By pressing sliding member 21, first piercing head 22 is pushed to pierce the upper end face of liquid storage tank, and second piercing head 62 pierces the lower end face of liquid storage tank 4.

[0030] The upper end face and the lower end face of the liquid storage tank 4 are respectively provided with sealing film / heat-sealing film, and the sealing film is pierced by the corresponding piercing head and drained.Spring can avoid the sealing film of the liquid storage tank from being accidentally pierced on one hand, and provide the power of reset and separation on the other hand.

[0031] The upper side of the channel column tube 3 is provided with a limiting boss 31, and the clamping member on the lower side of the sliding member 21 is matched with the limiting boss 31, facilitating the installation of the sliding member, and the clamping member is clamped on the lower side of the limiting boss 31. The inner side of the sliding member 21 is provided with a first spring 23, and the outer side of the first spring 23 is matched with the limiting boss 31; the first piercing head 22 extends to the accommodating cavity 32 through the limiting boss 31.

[0032] The first piercing head 22 is provided with a first micro flow channel which is communicated outward. After the second piercing head 62 pierces the lower end face of the liquid storage tank 4, one end of the second micro flow channel is communicated with the inside of the liquid storage tank through the second piercing head 62, and the other end is communicated with the reagent mixing part and the detection part downstream, so as to supply the reagent to the downstream part; after the first piercing head 22 pierces the upper end face of the liquid storage tank 4, the space on the upper side of the liquid storage tank is communicated with the outside air through the first micro flow channel, so as to release the pressure.

[0033] In one embodiment, the piercing device is installed in the card box. The liquid storage tank is separated from the card box, which greatly reduces the difficulty of preloading the reagent and reduces the production process requirements and cost. The card box and the liquid storage tank can be packaged and transported separately, improving the transportation safety. When used, the required types of liquid storage tanks are filled in the card box according to the requirements, which greatly improves the flexibility of the detection project and can realize the mixed detection of multiple detection projects for a single sample.

[0034] Because the microfluidic can be designed to be a multi-flow channel, the sample to be detected can be simultaneously divided into multiple reaction units through the micro flow channel network, and the reaction units are isolated from each other, so that the detection of multiple projects for the same sample in parallel can be realized according to the requirements. Compared with the conventional detection of each project, the detection time is greatly shortened, and the detection efficiency is improved. The reaction reagent system required for the detection of different projects is usually different. This means that in order to realize the detection of multiple projects for the same sample in parallel, in addition to the sample splitting, the mixed and reaction of the split sample and various different reagents are also required.

[0035] The utility model can be well adapted to the reagent / sample supply of the above-mentioned multi-flow channel detection, and can be well adapted to the instant detection.

[0036] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A puncture device for a liquid storage tank, characterized in that, Includes a channel column tube (3), a lower piercing mechanism (6), and a flow channel plate (8). One side of the channel column (3) is provided with a receiving cavity (32) that matches the liquid storage tank (4). The lower piercing mechanism (6) includes a positioning pad (61) and a second piercing head (62). The second piercing head (62) is installed on the flow channel plate (8), and the positioning pad (61) that cooperates with the positioning boss (42) at one end of the liquid storage tank (4) is installed on the outside of the second piercing head (62); The flow channel plate (8) is provided with a second micro-flow channel (81) connected to the second piercing head (62).

2. The piercing device according to claim 1, characterized in that, The positioning pad (61) is provided with a second spring (63) that cooperates with the liquid storage tank (4) on the outside.

3. The piercing device according to claim 1, characterized in that, It also includes the upper piercing mechanism (2), The upper piercing mechanism (2) includes a sliding member (21) and a first piercing head (22) installed inside the sliding member (21). The sliding member (21) is slidably mounted on the upper side of the channel column (3).

4. The piercing device according to claim 3, characterized in that, The upper and lower ends of the liquid storage tank (4) are respectively fitted with sealing films.

5. The piercing device according to claim 3, characterized in that, The upper side of the channel column tube (3) is provided with a limiting boss (31), and the locking part on the lower side of the sliding member (21) cooperates with the limiting boss (31).

6. The piercing device according to claim 5, characterized in that, The inner side of the sliding member (21) is provided with a first spring (23), and the outer side of the first spring (23) cooperates with the limiting boss (31); The first piercing head (22) extends through the limiting boss (31) into the receiving cavity (32).

7. The piercing device according to claim 3, characterized in that, The first puncture head (22) is provided with a first microchannel that is connected to the outside.

8. The piercing device according to claim 7, characterized in that, After the second piercing head (62) pierces the lower end face of the liquid storage tank (4), one end of the second microchannel is connected to the inside of the liquid storage tank through the second piercing head (62), and the other end is connected to the downstream reagent mixing component. After the first piercing head (22) pierces the upper surface of the liquid storage tank (4), the upper space of the liquid storage tank is connected to the outside air through the first microchannel.

9. The piercing device according to claim 7, characterized in that, The puncturing device (1) is installed inside the card box.

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