CN110840492A - Body fluid collecting device - Google Patents

Abstract

The invention relates to a bodily fluid collection device, comprising: a storage container with a first storage cavity and a second storage cavity, the first storage cavity and the second storage cavity are communicated through a communication port, and the first storage cavity is used for storing Preserving the liquid, the storage container also has an open end that communicates the second storage cavity with the outside world; a collector is detachably connected to the open end, and the collector includes a liquid collection cup and a guide tube, one end of the guide tube is connected to the liquid collector The cups are connected and communicated, the other end of the guide pipe is a closed blind pipe end, the guide pipe is inserted into the storage container, the blind pipe end is used to block the communication port, and the guide pipe is connected to the inner wall surface of the second storage cavity. A buffer cavity is formed between the two, the peripheral surface of the guide pipe is provided with a liquid outlet, and the guide pipe is communicated with the buffer cavity through the liquid outlet; and a blocking member is used to open or block the open end. The body fluid collecting device of the present invention has a simple structure and low cost, and can simplify the operation process and improve the convenience of use.

Description

body fluid collection device

technical field

The present invention relates to the technical field of medical appliances, in particular to a body fluid collection device.

Background technique

In the field of clinical medicine, it is usually necessary to test body fluid samples (such as saliva, urine, etc.) to assist diagnosis and treatment. Studies have shown that saliva is rich in protein, DNA, RNA, fatty acids, and microorganisms, which can be used to extract genetic material, and the changes in its components can be used as the basis for disease diagnosis, which has very important medical value.

At present, the saliva collection devices on the market generally include a storage container A and a storage container B, wherein the storage container A is sealed and stored with the preservation liquid, and the storage container B is connected with a collector for collecting saliva, and the saliva is collected through the storage container B. Then, pour the preservation solution in the storage container A into the storage container B, remove the collector, and tighten the sealing cover of the storage container B. The above-mentioned saliva collecting device has complex structure, high cost, complicated operation process and inconvenient use, resulting in poor user experience.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a body fluid collection device in view of the above problems, which has a simple structure and low cost, and can simplify the operation process and improve the convenience of use.

A bodily fluid collection device, comprising:

A storage container has a first storage cavity and a second storage cavity, the first storage cavity is communicated with the second storage cavity through a communication port, the first storage cavity is used for holding the preservation liquid, and the The storage container also has an open end that communicates the second storage cavity with the outside world;

A collector is detachably connected to the open end, the collector includes a liquid collection cup and a guide pipe, one end of the guide pipe is connected and communicated with the liquid collection cup, and the other side of the guide pipe is in communication with the liquid collection cup. One end is a closed blind pipe end, the guide pipe is inserted into the storage container, the blind pipe end is used to block the communication port, and the guide pipe is connected to the inner part of the second storage cavity. A buffer cavity is formed between the wall surfaces, a liquid outlet is provided on the peripheral surface of the guide pipe, and the guide pipe is communicated with the buffer cavity through the liquid outlet; and

A blocking member for opening or blocking the open end.

The first storage cavity of the storage container of the above-mentioned body fluid collection device is pre-filled with a preservation liquid, the collector is connected to the open end of the storage container, the guide tube is inserted into the storage container, and the communication port is blocked by the blind pipe end Sealed, so as to achieve sealed preservation of the preservation solution. When collecting body fluid (such as saliva) samples, saliva is collected through the collection cup, and the saliva flows into the buffer cavity through the guide tube and the liquid outlet for temporary storage; after the collection is completed, the collector is separated from the storage container, and the buffer cavity The saliva inside can flow into the first storage cavity from the communication port to be mixed with the preservation liquid; finally, the open end of the storage container is sealed by the blocking member, so that the sealed storage of the saliva sample can be realized. The body fluid collection device of the present invention greatly simplifies the use and operation process, can effectively improve the convenience of use, and enhance the user experience; and compared with the traditional saliva collection device, the structure is simpler, and the cost can be effectively reduced.

In one embodiment, the storage container includes a first pipe section and a second pipe section that are connected to each other, an end of the first pipe section away from the second pipe section is a closed structure, and the first pipe section is formed in the first pipe section. a storage cavity, the part where the second pipe section is connected to the first pipe section is constricted to form the communication port, and the end of the second pipe section away from the first pipe section forms the open end, so The second storage cavity is formed in the second pipe section, and the storage cavity is formed between the outer peripheral surface of the guide tube and the inner peripheral surface of the first pipe section.

In one of the embodiments, the dead pipe end is provided with a sealing member, and the sealing member is used for sealingly fitting with the communication port.

In one of the embodiments, the seal is a silicone seal or a rubber seal.

In one embodiment, a concave cavity is provided on the outer peripheral surface of the guide tube at a portion corresponding to the liquid outlet.

In one embodiment, the blocking member includes a mounting seat and a sealing cover movably connected to the mounting seat, the mounting seat is arranged through two ends, and one end of the mounting seat is sealed with the open end connected, the sealing cover is used for opening or sealing the other end of the mounting seat.

In one embodiment, the mounting seat includes an annular plate, a first socket part and a second socket part, and both the first socket part and the second socket part are cylinders with open ends One end of the first socket part is connected to the outer peripheral edge of the annular plate, one end of the second socket part is connected to the inner peripheral edge of the annular plate, the first socket part and the The second socket parts are respectively located on opposite sides of the annular plate, the annular plate is disposed opposite the end face of the open end, the first socket parts are sleeved on the outer circumference of the open end, and the guide pipe Removably inserted in the second socket part, the sealing cover is used for opening or sealing the open end of the second socket part.

In one of the embodiments, a first sealing portion is provided on a side of the annular plate adjacent to the first socket portion, and the first sealing portion is used for sealingly connecting with the periphery of the open end.

In one embodiment, the inner cover surface of the sealing cover is provided with a second sealing portion, and when the sealing cover covers the second socket portion, the second sealing portion is used for connecting with the first sealing portion. The open ends of the two socket parts are connected in a sealed manner.

In one of the embodiments, the body fluid collection device further comprises a liquid taking tube detachably matched with the storage container, and the liquid taking tube is used for taking liquid from the storage container.

Description of drawings

1 is a schematic diagram of an exploded structure of a body fluid collection device according to an embodiment of the present invention;

2 is a schematic cross-sectional view of the body fluid collection device in FIG. 1 during sample collection;

3 is a schematic structural diagram of the body fluid collection device in FIG. 1 during sample storage;

4 is a schematic structural diagram of a storage container of the body fluid collection device in FIG. 1;

Figure 5 is a schematic cross-sectional view of the storage container in Figure 4;

6 is a schematic structural diagram of a collector of the body fluid collection device in FIG. 1;

7 is a schematic structural diagram of a blocking member of the body fluid collection device in FIG. 1;

8 is a schematic cross-sectional view of a body fluid collection device according to another embodiment of the present invention;

FIG. 9 is a partial enlarged schematic view of the position A in FIG. 8 .

10. Storage container, 101, first storage chamber, 102, second storage chamber, 103, communication port, 104, buffer chamber, 11, first pipe section, 12, second pipe section, 121, open end, 1211, first External thread, 13, Scale line, 20, Collector, 21, Collection cup, 22, Guide tube, 221, Dead end, 222, Liquid outlet, 223, Seal, 224, Recess, 225, Convex table, 226, second external thread, 227, limit flange, 30, blocking piece, 31, mounting seat, 311, annular plate, 3111, first sealing part, 312, first socket part, 3121, first One internal thread, 3122, anti-skid structure, 3123, groove, 313, second socket, 3131, second internal thread, 32, sealing cover, 321, second sealing part, 322, male buckle, 33, connecting piece , 40, preservation solution.

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. The preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The "first" and "second" mentioned in the present invention do not represent a specific quantity and order, but are only used for the distinction of names.

Referring to FIG. 1 , a body fluid collection device includes a storage container 10 , a collector 20 and a blocking member 30 . The body fluid collection device can be used for, but not limited to, collection and storage of saliva samples, and can also be used for collection and storage of other body fluids. The following description mainly takes the collection and storage of saliva samples as an example.

Please refer to FIG. 2 and FIG. 5 , the storage container 10 has a first storage cavity 101 and a second storage cavity 102 . The first storage cavity 101 and the second storage cavity 102 communicate with each other through a communication port 103 . For containing the preservation solution 40, the storage container 10 also has an open end 121 that communicates the second storage chamber 102 with the outside. The storage container 10 may be made of materials such as plastic or glass. As shown in FIG. 4 , the outer side of the storage container 10 may be silk-screened, die-engraved, or machined to mark the scale line 13 of the collected saliva volume. In addition, the outer side of the storage container 10 can also be screen-printed, die-engraved or pasted with product-related information such as product name and serial number, manufacturer and date, and sample storage conditions.

Please refer to FIG. 2 and FIG. 6 , the collector 20 is detachably connected to the open end 121 , such as a screw connection or a snap connection. It should be noted that the collector 20 and the open end 121 of the storage container 10 may be directly connected or indirectly connected by an intermediate element, as long as the connection and disassembly between the collector 20 and the storage container 10 can be achieved. The collector 20 includes a liquid collecting cup 21 and a guide pipe 22. One end of the guide pipe 22 is connected and communicated with the liquid collecting cup 21, and the other end of the guide pipe 22 is a closed blind pipe end 221, and the guide pipe 22 is inserted In the storage container 10 , the dead pipe end 221 is used to block the communication port 103 , a buffer cavity 104 is formed between the guide pipe 22 and the inner wall surface of the second storage cavity 102 , and the peripheral surface of the guide pipe 22 is provided with a liquid outlet 222 , the guide tube 22 communicates with the buffer cavity 104 via the liquid outlet 222 .

As shown in FIG. 2 and FIG. 8 , before use, the collector 20 is in a connected state with the storage container 10 , and the communication port 103 can be blocked and sealed by the dead end 221 of the guide pipe 22 . The dead pipe end 221 and the communication port 103 can be sealed by means of interference fit; alternatively, the dead pipe end 221 can be made of a flexible material such as rubber or silicone to seal the communication port 103; The end 221 is provided with a sealing member 223 to seal the communication port 103 . The specific sealing form is not limited, as long as it can ensure that the preservation liquid 40 in the first storage chamber 101 does not leak. After the collection is completed, the collector 20 is removed, and the dead pipe end 221 is separated from the communication port 103 , so that the buffer cavity 104 can be communicated with the first storage cavity 101 .

The liquid outlet 222 is used to communicate the guide tube 22 with the buffer cavity 104 , and the shape and quantity of the liquid outlet 222 can be set according to actual requirements. Considering that saliva samples are usually viscous, preferably, as shown in FIG. 6 , the liquid outlet 222 is in the shape of a long strip extending along the length direction of the guide tube 22; and/or, the guide tube 22 is provided with two and above the liquid outlet 222, so that the total liquid outlet area of the guide tube 22 is as large as possible, so that the saliva sample can flow into the buffer cavity 104 more quickly, so as to improve the collection efficiency.

The closure member 30 is used to open or close the open end 121 . The blocking member 30 and the storage container 10 may be provided separately, or the blocking member 30 may also be connected to the storage container 10 as a whole through the connecting member 33 .

The above-mentioned body fluid collection device is pre-installed with a preservation liquid 40 in the first storage cavity 101 of the storage container 10, the collector 20 is connected to the open end 121 of the storage container 10, and the guide tube 22 is inserted into the storage container 10, and passes through the storage container 10. The dead pipe end 221 seals the communication port 103 , so as to realize the sealed preservation of the preservation liquid 40 . When collecting body fluid (such as saliva) samples, the saliva is collected through the collection cup 21, and the saliva flows into the buffer cavity 104 through the guide tube 22 and the liquid outlet 222 for temporary storage; after the collection is completed, the collector 20 is connected to the storage After the container 10 is separated, the saliva in the buffer cavity 104 can flow into the first storage cavity 101 from the communication port 103 to be mixed with the preservation liquid 40; finally, the open end 121 of the storage container 10 is sealed by the blocking member 30. (As shown in Figure 3), the sealed storage of the saliva sample can be realized. The body fluid collection device of the present invention greatly simplifies the use and operation process, can effectively improve the convenience of use, and enhance the user experience; and compared with the traditional saliva collection device, the structure is simpler, and the cost can be effectively reduced.

Please refer to FIG. 2 and FIG. 5 , in a specific embodiment, the storage container 10 includes a first pipe section 11 and a second pipe section 12 that are connected to each other. One end of the first pipe section 11 away from the second pipe section 12 is a closed structure. The first storage cavity 101 is formed in the 11, the part where the second pipe section 12 and the first pipe section 11 are connected is arranged in a constricted manner to form a communication port 103, the end of the second pipe section 12 away from the first pipe section 11 forms an open end 121, and the second pipe section 12 forms an open end 121. A second storage cavity 102 is formed in the pipe section 12 , and a storage cavity 104 is formed between the outer peripheral surface of the guide tube 22 and the inner peripheral surface of the first pipe section 11 .

In this embodiment, the storage container 10 has a variable diameter tubular structure, the inner diameter of the second pipe section 12 is larger than the inner diameter of the first pipe section 11 , and the end of the second pipe section 12 connected to the first pipe section 11 is constricted to form a communication port 103 , the size of the inner diameter of the first pipe section 11 is substantially the same as the size of the communication port 103 . Of course, in other embodiments, the inner diameter of the first pipe section 11 can also be set to be substantially the same as the inner diameter of the second pipe section 12, or larger than the inner diameter of the second pipe section 12, and only the first pipe section 11 The end connected to the second pipe section 12 may be configured as a constriction structure that can be butted with the communication port 103 . The outer diameter of the guide pipe 22 is smaller than the inner diameter of the second pipe section 12, and the annular gap between the outer peripheral surface of the guide pipe 22 and the inner peripheral surface of the second pipe section 12 forms the buffer cavity 104; of course, in other embodiments Alternatively, one side of the diversion pipe 22 can be in contact with the inner wall of the second pipe section 12 , and the other side of the diversion pipe 22 and the inner wall of the second pipe section 12 are spaced apart to form the buffer cavity 104 . In addition, as shown in FIG. 5 , the outer diameter of the first pipe section 11 is smaller than the outer diameter of the second pipe section 12 , so that the storage container 10 as a whole presents a tubular structure with a wide top and a narrow bottom. In this way, the wall of the storage container 10 can be Thickness remains consistent for easy injection molding. Further, the second pipe section 12 may further include an extension pipe section sleeved on the periphery of the first pipe section 11, the first pipe section 11 and the extension pipe section are connected by ribs, and the outer diameter of the extension pipe section and the first pipe section are the same, so that the storage The container 10 as a whole presents a tubular structure that is uniform up and down.

Further, as shown in FIG. 2 and FIG. 8 , the dead pipe end 221 is provided with a sealing member 223 , and the sealing member 223 is used for sealingly matching with the communication port 103 . Specifically, a T-shaped fixed head can be provided on the dead pipe end 221, and the sealing member 223 has an installation cavity adapted to the fixed head. The sealing member 223 can be sleeved on the fixed head to achieve reliable connection with the dead pipe end 221. connect. Alternatively, the sealing member 223 is integrally formed with the dead end 221 of the guide tube 22 . The sealing performance can be further improved by the sealing connection between the sealing member 223 and the peripheral edge of the communication port 103 . The seal 223 may be a silicone seal or a rubber seal.

In addition, please refer to FIG. 6 , a concave cavity 224 is provided on the outer peripheral surface of the guide tube 22 corresponding to the liquid outlet 222 .

Further, a conical boss 225 may also be provided in the guide tube 22 , the bottom end of the boss 225 is connected with the blind pipe end 221 , and the conical top of the boss 225 is disposed toward the liquid collecting cup 21 . The saliva sample can be guided to a certain extent by the boss 225, so that the saliva in the guide tube 22 can flow to the liquid outlet 222 along the conical surface of the boss 225, and then quickly flow into the buffer cavity 104 for further Improve collection efficiency.

Please refer to FIG. 7 and FIG. 8. In one embodiment, the blocking member 30 includes a mounting seat 31 and a sealing cover 32 movably connected to the mounting seat 31. The mounting seat 31 is arranged through two ends, and one end of the mounting seat 31 is connected to The open end 121 is sealed and connected, and the sealing cover 32 is used to open or seal the other end of the mounting seat 31 .

Specifically, the mounting seat 31 and the open end 121 of the storage container 10 can be connected by means of screw connection or snap connection, and after the connection, interference fit, additional sealing ring, etc. can be used to achieve sealing. The specific sealing structure can be It is a side seal, an end face seal or a combination of the two. That is, the above-mentioned sealing structure may be a single-piece cover (no gasket cover) sealing structure, a double-piece cover (with a gasket cover) sealing structure or a sealing ring sealing structure. The sealing cover 32 is hinged with the mounting seat 31 through the connecting piece 33 , and can be freely turned relative to the mounting seat 31 . The sealing cover 32 and the end of the mounting seat 31 can be sealed by means of interference fit, additional sealing ring, etc., and the specific sealing structure can be a side seal, an end face seal, or a combined seal composed of the two. In this way, both ends of the mounting seat 31 can be sealed with the storage container 10 and the sealing cover 32 respectively, so as to ensure the sealing reliability between the blocking member 30 and the storage container 10 and prevent the liquid in the storage container 10 from leaking.

Further, referring to FIG. 7 and FIG. 9 , the mounting seat 31 includes an annular plate 311 , a first socket part 312 and a second socket part 313 , and the first socket part 312 and the second socket part 313 are both at two ends. Open cylindrical shape, one end of the first socket part 312 is connected to the outer periphery of the annular plate 311, one end of the second socket part 313 is connected to the inner periphery of the annular plate 311, the first socket part 312 and the second socket The connecting portions 313 are respectively located on opposite sides of the annular plate 311, the annular plate 311 is arranged opposite to the end face of the open end 121, the first sleeve portion 312 is sleeved on the outer periphery of the open end 121, and the guide tube 22 is detachably inserted in the opening end 121. In the second socket part 313 , the sealing cover 32 is used to open or seal the open end of the second socket part 313 .

Wherein, the open end 121 and the first socket part 312 may adopt a snap connection or a screw connection, so as to ensure the reliability of the connection between the blocking member 30 and the storage container 10 . For example, as shown in FIG. 9 , the outer peripheral surface of the open end 121 is provided with a first external thread 1211 , and the inner peripheral surface of the first socket portion 312 is provided with a first internal thread 3121 matched with the first external thread 1211 . The installation or disassembly between the storage container 10 and the blocking member 30 can be quickly realized by screwing, and the operation is simple and convenient.

The guide tube 22 and the second socket part 313 can be connected by a snap connection or a screw connection to ensure that the collector 20 can be stably connected to the blocking member 30, and the collector 20 can be easily removed after the collection is completed. Further improve the convenience of use. For example, as shown in FIG. 9 , the outer peripheral surface of the guide tube 22 is provided with a second external thread 226 , and the inner peripheral surface of the second socket portion 313 is provided with a second internal thread 3131 that cooperates with the second external thread 226 . The installation or removal between the collector 20 and the blocking member 30 can be quickly realized by screwing, and the operation is simple and convenient. In addition, a limit flange 227 can also be provided on the outer periphery of the guide tube 22 , and the limit flange 227 can abut and cooperate with the end surface of the second socket portion 313 to limit the insertion depth of the guide tube 22 .

Further, a first sealing portion 3111 is provided on the surface of the annular plate 311 close to the first socket portion 312 , and the first sealing portion 3111 is used for sealingly connecting with the peripheral edge of the open end 121 . Preferably, as shown in FIG. 9 , two first sealing parts 3111 are provided on the side of the annular plate 311 close to the first socket part 312 , and the two first sealing parts 3111 are annularly arranged concentrically and spaced apart. The sealing portion 3111 is in sealing connection with the outer periphery of the open end 121 , and the other first sealing portion 3111 is in sealing connection with the inner periphery of the open end 121 . Through the cooperation of the two first sealing parts 3111 , a reliable sealing connection between the open end 121 and the mounting seat 31 can be achieved, so as to prevent the leakage of the liquid in the storage container 10 . Of course, in other embodiments, a sealing ring may also be provided between the first socket portion 312 and the open end 121, and/or a sealing ring may be provided between the annular plate 311 and the open end 121 to achieve reliable sealing connect.

Further, as shown in FIG. 7 , the inner cover surface of the sealing cover 32 is provided with a second sealing portion 321 . When the sealing cover 32 covers the second socket portion 313 , the second sealing portion 321 is used for connecting with the second socket. The open end of the portion 313 is hermetically connected. Specifically, the second sealing portion 321 may be an annular structure, and an annular groove is formed between the outer peripheral surface of the second sealing portion 321 and the inner peripheral surface of the sealing cover 32. When the sealing cover 32 covers the second socket portion 313, The end of the second socket part 313 can be inserted into the annular groove, the outer peripheral surface of the second sealing part 321 is sealedly connected with the inner periphery of the second socket part 313 , the structure is simple, and the sealing reliability can be ensured.

In addition, the outer peripheral surface of the first socket part 312 can be provided with a non-slip structure 3122, which can increase the friction between the user's hand and the first socket part 312 during use, thereby effectively preventing the body fluid collection device from slipping off . The anti-skid structure 3122 can be an anti-skid pattern directly formed on the outer peripheral surface of the first socket portion 312 , or can also be an anti-skid sleeve sleeved on the outside of the first socket portion 312 . For example, the anti-skid structure 3122 may be a plurality of longitudinally extending ribs disposed on the outer periphery of the first socket portion 312 .

Referring to FIG. 7 , optionally, a convex buckle 322 is provided on one side of the sealing cover 32 . In this way, when the sealing cover 32 covers the second socket portion 313 , the user only needs to exert force on the convex buckle 322 . The sealing cover 32 can be easily opened. Further, a groove 3123 is formed on the outer periphery of the first socket portion 312 , and the groove 3123 extends to the annular plate 311 to form a gap. As shown in FIG. 3 , when the sealing cover 32 is fastened to the second socket part 313 , the groove 3123 is located below the convex buckle 322 . When the sealing cover 32 needs to be opened, the user only needs to follow the groove 3123 with his fingers. The sealing cover 32 can be easily opened by sliding up and pushing up the protruding buckle 322 .

In addition, the above-mentioned body fluid collection device may also be equipped with a liquid extraction tube for extracting the liquid in the storage container 10 . For example, the liquid sampling tube can be a rubber-tip dropper. When the sample needs to be tested, the liquid sampling tube is inserted into the storage container 10 from the open end 121 to conveniently extract the sample to be tested in the storage container 10 .

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. A bodily fluid collection device, characterized in that, comprising: A storage container has a first storage cavity and a second storage cavity, the first storage cavity is communicated with the second storage cavity through a communication port, the first storage cavity is used for holding the preservation liquid, and the The storage container also has an open end that communicates the second storage cavity with the outside world; A collector is detachably connected to the open end, the collector includes a liquid collection cup and a guide pipe, one end of the guide pipe is connected and communicated with the liquid collection cup, and the other side of the guide pipe is in communication with the liquid collection cup. One end is a closed blind pipe end, the guide pipe is inserted into the storage container, the blind pipe end is used to block the communication port, and the guide pipe is connected to the inner part of the second storage cavity. A buffer cavity is formed between the wall surfaces, a liquid outlet is provided on the peripheral surface of the guide pipe, and the guide pipe is communicated with the buffer cavity through the liquid outlet; and A blocking member for opening or blocking the open end. 2 . The bodily fluid collection device according to claim 1 , wherein the storage container comprises a first pipe section and a second pipe section that are connected to each other, and one end of the first pipe section away from the second pipe section is a closed structure, 3 . The first storage cavity is formed in the first pipe section, the connecting portion of the second pipe section and the first pipe section is arranged in a constricted manner to form the communication port, and the second pipe section is far away from the first pipe section. One end of the pipe section forms the open end, the second storage cavity is formed in the second pipe section, and the storage cavity is formed between the outer peripheral surface of the guide tube and the inner peripheral surface of the first pipe section. 3 . The body fluid collection device according to claim 1 , wherein a sealing member is provided at the end of the dead pipe, and the sealing member is used for sealingly matching with the communication port. 4 . 4 . The body fluid collection device according to claim 3 , wherein the sealing member is a silicone sealing member or a rubber sealing member. 5 . 5 . The body fluid collection device according to claim 1 , wherein a concave cavity is provided on the outer peripheral surface of the guide tube corresponding to the liquid outlet. 6 . 6 . The bodily fluid collection device according to claim 1 , wherein the blocking member comprises a mounting seat and a sealing cover movably connected to the mounting seat, the mounting seat is arranged through two ends, and the One end of the mounting seat is sealingly connected with the open end, and the sealing cover is used for opening or sealing the other end of the mounting seat. 7 . The body fluid collection device according to claim 6 , wherein the mounting seat comprises an annular plate, a first socket part and a second socket part, the first socket part and the second socket part. 8 . The connection parts are all cylindrical with open ends, one end of the first sleeve connection part is connected to the outer periphery of the annular plate, and one end of the second sleeve connection part is connected to the inner periphery of the annular plate, The first socket part and the second socket part are respectively located on opposite sides of the annular plate, the annular plate is arranged opposite to the end face of the open end, and the first socket part is sleeved on the ring plate. the outer circumference of the open end, the guide tube is detachably inserted in the second socket part, and the sealing cover is used to open or seal the open end of the second socket part. 8 . The bodily fluid collection device according to claim 7 , wherein a first sealing portion is provided on a side of the annular plate close to the first socket portion, and the first sealing portion is used for connecting with the opening. 9 . The perimeter sealing connection of the ends. 9 . The body fluid collection device according to claim 7 , wherein a second sealing portion is provided on the inner cover surface of the sealing cover, and when the sealing cover covers the second socket portion, the The second sealing part is used for sealing connection with the open end of the second socket part. 10. The bodily fluid collection device according to any one of claims 1 to 9, further comprising a liquid taking tube detachably matched with the storage container, and the liquid taking tube is used to carry out the operation from the storage container. Take the liquid.

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