CN219126448U - Body fluid sample collection device and blood sampling equipment - Google Patents

Abstract

The utility model discloses a body fluid sample collection device and a blood sampling device, wherein the body fluid sample collection device comprises: a tube body; the separation part is arranged in the pipe body to separate the inner space of the pipe body into a first cavity and a second cavity which are distributed along the axial direction of the pipe body, and the separation part is provided with a flow hole which is communicated with the first cavity and the second cavity; the driving assembly is connected with the pipe body and used for generating pressure difference between the first chamber and the second chamber during sampling; the absorption part is arranged in the second cavity; wherein, first cavity is used for obtaining the body fluid sample, and the pressure differential that drive assembly produced inhales the body fluid sample in the first cavity in the second cavity through the flow hole and adsorbs the collection by the adsorption equipment in this scheme, sets up drive assembly in the body fluid sample collection device, and drive assembly can produce the negative pressure immediately when the sample, and the negative pressure in the body can not reduce along with the lapse of time for body fluid sample collection device's life is longer.

Description

Body fluid sample collection device and blood sampling equipment

Technical Field

The utility model relates to the technical field of medical detection equipment, in particular to a body fluid sample collection device and blood sampling equipment.

Background

The sampling is the first step of detecting the human health index, and the safe, convenient and effective sampling mode can ensure that the testee is not infected or injured in the sampling process; meanwhile, the accuracy of detection after sampling can be improved, and lesions in the body can be found early. The sampling of body fluids, especially blood, takes up a great deal of items in human detection.

The existing body fluid sample collecting device presets negative pressure in the tube body, namely, the tube body is pumped into the negative pressure when the body fluid sample collecting device is produced, and the body fluid sample can be directly sucked by utilizing the negative pressure when the body fluid sample collecting device is used. However, since the negative pressure in the tube body has a service life, generally one to two years, after the service life is exceeded, the negative pressure is reduced or eliminated, and it is difficult to meet the sampling requirement. The existing body fluid sample sampling device has a short service life.

Disclosure of Invention

The utility model mainly aims to provide a body fluid sample collection device and blood sampling equipment, which can prolong the service life of the body fluid sample collection device.

To achieve the above object, the present utility model provides a body fluid sample collection device comprising:

a tube body;

the separation part is arranged in the pipe body to separate the inner space of the pipe body into a first chamber and a second chamber which are distributed along the axial direction of the pipe body, and the separation part is provided with a flow hole which is communicated with the first chamber and the second chamber;

a drive assembly coupled to the tube for generating a pressure differential between the first chamber and the second chamber during sampling;

the absorption part is arranged in the second cavity;

the first chamber is used for acquiring a body fluid sample, and the pressure difference generated by the driving assembly is used for sucking the body fluid sample in the first chamber into the second chamber through the circulation hole, so that the body fluid sample flowing into the second chamber is sampled by the adsorption piece.

In some embodiments, the tube has oppositely disposed first and second ports, the first port extending through the first chamber and the second port extending through the second chamber;

the driving assembly comprises a plug body and a plug rod connected with the plug body, the plug body is arranged in the second cavity, the plug rod penetrates out of the second cavity through the second port, the second cavity comprises a sampling cavity positioned between the plug body and the separation part, and the plug rod can drive the plug body to move in a direction away from the separation part after obtaining driving force, so that air pressure lower than that of the first cavity is generated in the sampling cavity.

In some embodiments, the absorbent member is removably coupled to the tube;

or alternatively, the first and second heat exchangers may be,

the plug body is configured to be capable of being separated from the second chamber in a direction away from the partition, and the adsorbing member is connected to a wall surface of the plug body facing the partition.

In some embodiments, the plug body is configured to be capable of being separated from the second chamber in a direction away from the partition, a wall surface of the plug body facing the partition is provided with a mounting groove, and the adsorption piece is embedded in the mounting groove.

In some embodiments, the stopper rod is connected with a stop located outside the second chamber, the stop being movable with the stopper rod to abut an end of the tube body on the side of the second port to limit the distance between the stopper body and the partition.

In some embodiments, the stop is annular and is disposed around the stem, the stop being configured to co-cover the second port with the stem when the tube is positioned against an end of the second port side.

In some embodiments, the collecting device further comprises a flow guiding pipe, wherein the flow guiding pipe penetrates through the circulation hole, one end of the flow guiding pipe stretches into the second cavity, and the opposite end of the flow guiding pipe is located in the circulation hole.

In some embodiments, the distance from the separation part to the absorption part along the axial direction of the pipe body is L1, and the length of the flow guide pipe exceeding the flow through hole is L2, wherein L1/L2 is more than or equal to 2;

or alternatively, the first and second heat exchangers may be,

the plug rod is connected with a stop part positioned outside the second cavity, and the stop part can move along with the plug rod to abut against the end part of the pipe body positioned at one side of the second port so as to limit the distance between the plug body and the separation part; the distance between the separation part and the absorption part is L1, and the length of the flow guide pipe exceeding the flow hole is L2 along the axial direction of the pipe body; the stop part is configured to be in butt joint with the end part of the pipe body positioned at one side of the second port, and L1/L2 is more than or equal to 2.

In some embodiments, the flow guiding pipe is provided with a liquid outlet facing away from the first chamber, the adsorption piece is a dry blood paper sheet, a wall surface of the dry blood paper sheet facing the separation part is perpendicular to the axis of the pipe body, and the liquid outlet is positioned in the middle of the dry blood paper sheet when the liquid outlet is observed along the axial direction of the pipe body.

In some embodiments, the drive assembly is configured to enable the air pressure P within the second chamber to satisfy: p is more than or equal to 20KPa and less than or equal to 80KPa.

There is also provided in an embodiment of the second aspect of the present application a blood sampling device comprising a body fluid sample collection device as described in any one of the preceding claims.

Compared with the prior art, the utility model has the beneficial effects that:

in one aspect of the present utility model, a body fluid sample collection device includes a tube, a partition, an absorbent member, and a drive assembly. The separation portion separates the pipe body into a first cavity and a second cavity, when sampling, the body fluid sample can be driven into the storage and the first cavity, the body fluid sample in the first cavity can be sucked into the second cavity through the flow hole by the pressure difference generated by the driving assembly, and the body fluid sample entering the second cavity can be sampled by the adsorption piece. In this scheme, set up drive assembly in the body fluid sample collection device, drive assembly can produce pressure differential between first cavity and second cavity when the sample, compares in prior art in the structure of predetermineeing the negative pressure in the body, the pressure differential is controllable and body fluid sample collection device's in this scheme life is longer.

In addition, in this scheme, be equipped with two cavities (i.e. first cavity and second cavity) in the body, first cavity is used for obtaining the body fluid sample, and the second cavity is obtained from first cavity in the body fluid sample that is used for absorbing the piece to take a sample. It will be appreciated that the first chamber is used for coarse sampling and the second chamber is used for fine sampling. Compared with the structure that only one cavity exists in the tube body in the prior art, in the scheme, on one hand, the body fluid sample with the proper capacity can be acquired by the adsorption element more accurately, so that the detection accuracy is improved. On the other hand, too much body fluid sample can be prevented from being introduced into the second chamber, so that the sample is polluted when the suction member is taken out of the tube body, and the accuracy of the detection result is affected.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a body fluid sample collection device according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a body fluid sample collection device according to an embodiment of the present utility model; wherein the drive assembly is not activated;

FIG. 3 is an enlarged partial schematic view of FIG. 2A;

FIG. 4 is a schematic cross-sectional view of a body fluid sample collection device according to an embodiment of the present utility model; wherein the drive assembly initiates a pressure differential between the first chamber and the second chamber;

FIG. 5 is an exploded view of a body fluid sample collection device according to an embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of a body fluid sample collection device after detonation of a component in accordance with an embodiment of the present utility model;

FIG. 7 is an enlarged partial schematic view at B in FIG. 6;

fig. 8 is a schematic cross-sectional view of a body fluid sample collection device according to another embodiment of the present utility model.

Reference numerals illustrate:

10-a body fluid sample collection device;

100-tube body;

110-a first chamber; 120-a second chamber; 121-a sampling cavity; 130-a first port; 140-th

Two ports;

200-dividing part;

210-a flow hole;

300-a drive assembly;

310-plug body; 311-mounting slots; 320-stopper rod; 330-stop;

400-adsorbing piece;

500-flow guiding pipes;

510-a liquid outlet;

600-rubber stopper.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is included in the embodiment of the present utility model, the directional indication is merely used to explain a relative positional relationship, a movement condition, and the like between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or", "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B ", including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The sampling is the first step of detecting the human health index, and the safe, convenient and effective sampling mode can ensure that the testee is not infected or injured in the sampling process; meanwhile, the accuracy of detection after sampling can be improved, and lesions in the body can be found early. The sampling of body fluids, especially blood, takes up a great deal of items in human detection.

The existing body fluid sample collecting device presets negative pressure in the tube body, namely, the tube body is pumped into the negative pressure when the body fluid sample collecting device is produced, and the body fluid sample can be directly sucked by utilizing the negative pressure when the body fluid sample collecting device is used. However, since the negative pressure in the tube body has a service life, generally one to two years, after the service life is exceeded, the negative pressure is reduced or eliminated, and it is difficult to meet the sampling requirement. The existing body fluid sample sampling device has a short service life. In addition, in the prior art, the sampling tube is only provided with a cavity, and the liquid sample is stored after being introduced into the sampling tube or is used for sampling by an absorption part.

In view of this, and referring to fig. 1-8, embodiments of the present application provide a fluid sample collection device 10 that includes a tube 100, a partition 200, a drive assembly 300, and an absorbent member 400.

Referring to fig. 1-5, the tube body 100 defines a cylindrical space therein, and the tube body 100 has a first port 130 and a second port 140 disposed opposite to each other, the first port 130 and the second port 140 being in communication with the cylindrical space. Specifically, the tube body 100 may be circular tube-shaped, elliptical tube-shaped, rectangular tube-shaped, or the like, that is, the columnar space inside the tube body 100 may be cylindrical or elliptical column-shaped, rectangular column-shaped, or the like. The pipe body 100 may be straight or curved or bent. For convenience of description, the tubular body 100 is illustrated as a straight tube and a circular tube.

The partition 200 is disposed in the pipe body 100 to partition an inner space of the pipe body 100 into a first chamber 110 and a second chamber 120 distributed along an axial direction of the pipe body 100, wherein the first port 130 communicates with the first chamber 110, and the second port 140 communicates with the second chamber 120. The partition 200 has a flow hole 210 for communicating the first chamber 110 and the second chamber 120, and the body fluid sample in the first chamber 110 can be introduced into the second chamber 120 through the communication hole. The manner in which the separator 200 is connected to the tube 100 is dependent upon the actual need, see fig. 1-7, and in some embodiments the separator 200 is integrally formed with the tube 100. Referring to fig. 8, in other embodiments, the partition 200 is connected to the pipe body 100 by being installed in the pipe body 100 and interference-fitted with the pipe body 100, and in particular, in this embodiment, the partition 200 may be a flexible member such as rubber or silicone, and the partition 200 is plugged into a corresponding position in the pipe body 100 through the first port 130 or the second port 140 of the pipe body 100, thereby achieving connection with the pipe body 100.

To facilitate entry of a bodily fluid sample into the first chamber 110, in some embodiments, referring to fig. 2, 4, and 5, a rubber stopper 600 may also be provided, the rubber stopper 600 sealing the first port 130 of the tube 100, the rubber stopper 600 being configured to be penetrable by a needle cannula or the like, thereby allowing an external bodily fluid sample to be introduced into the first chamber 110.

The driving assembly 300 is connected to the pipe body 100, and the driving assembly 300 is used to generate a pressure difference between the first chamber 110 and the second chamber 120. The driving assembly 300 only needs to be capable of making the air pressure in the second chamber 120 smaller than the air pressure in the first chamber 110. For convenience of description, the following embodiments will be described by taking an example in which the driving assembly 300 is capable of generating a negative pressure in the second chamber 120 and making the air pressure in the second chamber 120 smaller than the air pressure in the first chamber 110. The driving assembly 300 can generate negative pressure in the whole second chamber 120, or can generate negative pressure in a part of the space in the second chamber 120. Referring to fig. 8, in some embodiments, the drive assembly 300 is capable of generating a negative pressure throughout the interior of the second chamber 120. Referring to fig. 1-7, the drive assembly 300 is capable of creating a negative pressure in a localized space within the second chamber 120. Whether the driving assembly 300 generates negative pressure in the whole second chamber 120 or in a local space in the second chamber 120, the body fluid in the first chamber 110 can be driven to move towards the second chamber 120 when the air pressure in the second chamber 120 is smaller than that in the first chamber 110.

The first chamber 110 of the tube body 100 is used for obtaining a body fluid sample, after the body fluid sample enters the first chamber 110, the spatial position of the tube body 100 is adjusted so that the body fluid sample in the first chamber 110 covers the flow hole 210 of the partition 200, and the rear driving assembly 300 makes the air pressure in the first chamber 110 greater than the air pressure in the second chamber 120, so that the body fluid sample in the first chamber 110 is pressed into the second chamber 120 through the flow hole 210. Illustratively, referring to the body fluid sample collection device of the embodiment shown in fig. 2, during introduction of the body fluid sample into the first chamber 110, the tube body 100 may be positioned laterally (i.e., the axis of the tube body 100 is disposed laterally), and when it is desired to introduce the body fluid sample into the first chamber 110 into the second chamber 120, the tube body 100 may be positioned longitudinally (i.e., the axis of the tube body 100 is disposed vertically) and the body fluid sample within the first chamber 110 may cover the flow aperture 210 in the partition 200, and then the drive assembly 300 may be caused to generate a negative pressure and cause the body fluid sample within the first chamber 110 to be drawn into the second chamber 120.

In the above-mentioned scheme, the pressure difference generated by the driving component can make the body fluid sample in the first chamber 110 be sucked into the second chamber 120, and the power of the body fluid sample entering the first chamber 110 can be determined according to the actual requirement. In some embodiments, the driving assembly 300 can generate the power for allowing the body fluid sample to enter the first strong chamber, at this time, when the body fluid sample needs to be collected, the driving assembly 300 can generate the negative pressure in the second chamber 120, and since the first chamber 110 and the second chamber 120 are communicated through the flow hole 210, the negative pressure is also generated in the first chamber 110, and the body fluid sample can be sucked by the negative pressure in the first chamber 110. In the subsequent process, after the body fluid sample in the first chamber 110 covers the flow hole 210, the driving assembly 300 generates negative pressure in the second chamber 120 again, at this time, since the flow hole 210 is covered, the pressure in the second chamber 120 is smaller than the pressure in the first chamber 110, and the body fluid sample in the first strong chamber is sucked into the second chamber 120. In other embodiments, the drive means on the blood sampling device may also be used to drive the body fluid sample into the first chamber 110, for example by driving a pump to force the body fluid sample into the first chamber 110.

The adsorbing member 400 is disposed in the second chamber 120, and the adsorbing member 400 is used for adsorbing and sampling the body fluid sample flowing into the second chamber 120. In particular, when the body fluid sample is blood, in some embodiments, the absorbent member 400 can be a sheet of dry blood, and a spot of dry blood can be formed on the sheet of dry blood after the blood flows onto the sheet of dry blood, thereby facilitating subsequent testing.

In an aspect of the present utility model, a body fluid sample collection device includes a tube 100, a partition 200, an absorbent member 400, and a drive assembly 300. The partition 200 divides the tube body 100 into the first chamber 110 and the second chamber 120, and when sampling, the body fluid sample can be driven into the first chamber 110, the body fluid sample in the first chamber 110 can be sucked into the second chamber 120 through the flow hole 210 by the pressure difference generated by the driving assembly 300, and the body fluid sample entering the second chamber 120 can be sampled by the adsorbing member 400. In this scheme, set up drive assembly 300 in the body fluid sample collection device, drive assembly 300 can be when the sample immediately produce pressure differential between first cavity and second cavity, compare in prior art in the structure of predetermineeing negative pressure in body 100, pressure differential in body 100 in this scheme is controllable and can not reduce along with the lapse of time for body fluid sample collection device's life is longer.

In this embodiment, two chambers (i.e., the first chamber 110 and the second chamber 120) are provided in the tube body 100, the first chamber 110 is used for obtaining a body fluid sample, and the second chamber 120 is used for obtaining a body fluid sample for sampling the suction member 400 from the first chamber 110. It will be appreciated that the first chamber 110 is used for coarse sampling and the second chamber 120 is used for fine sampling. Compared with the structure that only one cavity exists in the tube body 100 in the prior art, in this scheme, on one hand, the adsorption element 400 can be made to obtain a body fluid sample with a proper volume more accurately, so that the accuracy of detection is improved. On the other hand, the second chamber 120 can be prevented from introducing excessive body fluid sample, which may cause contamination of the sample when the absorbent member 400 is taken out of the tube 100, and the accuracy of the detection result may be impaired.

The specific structure and arrangement of the driving assembly 300 are determined according to the actual requirements, and only the driving assembly is required to generate the air pressure in the second chamber 120 smaller than that in the first chamber. Referring to fig. 2-4, in some embodiments, the drive assembly 300 includes a plug body 310 and a plug stem 320 coupled to the plug body 310. The plug body 310 is disposed in the second chamber 120, and the plug rod 320 is inserted through the second port 140 out of the second chamber 120. The second chamber 120 includes a sampling cavity 121 between the plug 310 and the partition 200, and the plug rod 320 can drive the plug 310 to move away from the partition 200 after obtaining the driving force, so as to generate negative pressure in the sampling cavity 121. That is, in the present embodiment, the driving assembly 300 generates the negative pressure only in the sampling cavity 121 in the second chamber 120. In order to improve the sealing property of the plug body 310, a sealing ring may be further disposed between the plug body 310 and the pipe body 100. The structure of arranging the driving assembly 300 in the second chamber 120 can reduce the occupied space of the body fluid sample collecting device, reduce the number of parts and reduce the material cost. In other embodiments, referring to fig. 8, the drive assembly 300 may be disposed outside the tube 100, with both communicating using an airway.

The absorbent member 400 may be positioned in any location within the second chamber 120 where a sample of bodily fluid can be obtained, see FIG. 8, and in some embodiments, the absorbent member 400 is removably coupled to the tube 100. Specifically, the pipe body 100 may be provided with a mounting member, the adsorption member 400 is mounted on the mounting member, and the mounting member is detachably mounted with the pipe body 100. When sampling of the adsorbing member 400 is completed, the mounting member may be detached from the tube body 100 for subsequent inspection steps. Referring to fig. 1-7, in other embodiments, plug body 310 is configured to be able to exit second chamber 120 in a direction away from partition 200, and absorbent member 400 is attached to a wall of plug body 310 facing partition 200. That is, in this embodiment, the driving assembly 300 can be detached from the tube 100, and the adsorbing member 400 is connected to the wall surface of the plug 310 facing the partition 200, so that the adsorbing member 400 can be detached along with the plug 310 after the plug is detached, thereby facilitating the subsequent detection steps.

To facilitate the installation of the adsorbing element 400, referring to fig. 3 and 7, in some embodiments, the plug body 310 is configured to be able to separate from the second chamber 120 in a direction away from the partition 200, a wall surface of the plug body 310 facing the partition 200 is provided with an installation groove 311, and the adsorbing element 400 is embedded in the installation groove 311. In this embodiment, the adsorbing member 400 can be more stably mounted. In some embodiments, the absorbing member 400 may be snapped into the mounting groove 311 to connect with the plug body 310, and in other embodiments, the absorbing member 400 may be bonded to the plug body 310 to connect with the plug body 310.

Referring to fig. 2 and 5, in some embodiments, the stopper rod 320 is connected with a stopper 330 located outside the second chamber 120, and the stopper 330 can move with the stopper rod 320 to abut against an end of the tube 100 located at the side of the second port 140, so as to limit the distance between the stopper body 310 and the partition 200. In this solution, the stop portion 330 can limit the limit position of the plug 320 relative to the tube body 100, so that the plug body 310 cannot abut against the partition portion 200, thereby preventing the adsorbing member 400 on the plug body 310 from colliding with the partition portion 200 to cause pollution and affecting the detection result.

In order to enhance the sealability of the second chamber 120 of the tube body 100, external impurities are prevented from entering the second chamber 120 through the second port 140 of the tube body 100, thereby causing contamination of the body fluid sample. Referring to fig. 2 and 5, in some embodiments, the stop 330 is annular and disposed around the stem 320, the stop 330 being configured to co-cover the second port 140 with the stem 320 when the abutment tube 100 is positioned at an end of the second port 140 side. In this scheme, in the initial state, the stop portion 330 can seal the second port 140, so that the probability that the foreign matters enter the second chamber 120 from the second port 140 is reduced, thereby improving the cleanliness of the portion outside the sampling cavity 121 in the second chamber 120, and finally improving the subsequent detection precision.

In order to improve the detection accuracy, it is desirable that the body fluid sample quantitatively drops onto the absorbent member 400, so that a uniform circular spot can be formed on the absorbent member 400, and the subsequent detection can be performed by cutting the circular region in the middle of the spot, so that the subsequent detection accuracy can be improved. In some embodiments, the collecting device further includes a flow guiding tube 500, wherein the flow guiding tube 500 penetrates through the flow hole 210, and one end of the flow guiding tube 500 extends into the second chamber 120, and the opposite end is located in the flow hole 210. In this scheme, the arrangement of the flow guiding tube 500 can facilitate the body fluid sample to drop onto the absorption member 400 from the port of the flow guiding tube 500 near the absorption member 400, thereby improving the sampling accuracy. Of course, in other embodiments, the body fluid sample may also be immersed in the absorbent member 400 from the side of the absorbent member 400.

After the flow guide 500 is disposed, in order to avoid the flow guide 500 from interfering with the plug 310, referring to fig. 3, in some embodiments, the distance between the partition 200 and the absorbing member along the axial direction of the pipe 100 is L1, and the length of the flow guide 500 that extends beyond the flow through hole 210 is L2, where L1/L2 is equal to or greater than 2. Illustratively, L1/L2 may be 2, 2.5, 3, 3.5, 4, or the like. In this scheme, enough space can be reserved between the plug body 310 and the flow guide pipe 500, on one hand, the position interference between the plug body 310 and the flow guide pipe 500 can be avoided, on the other hand, a sufficient distance can be provided when the liquid sample drops onto the adsorbing member 400, the liquid sample is prevented from directly contacting with the adsorbing member 400 after passing through the port outflow opening on the flow guide pipe 500, and the adsorbing member 400 excessively absorbs the body fluid sample in the flow guide pipe 500 through capillary action.

In some embodiments, the distance limitation between the plug body 310 and the partition 200 and the draft tube 500 may be achieved by the stopper 330. Referring to fig. 2 and 4, the stopper rod 320 is connected to a stopper 330 located outside the second chamber 120, and the stopper 330 can move with the stopper rod 320 to abut against an end of the tube 100 located at the side of the second port 140 to limit a distance between the stopper body 310 and the partition 200. The distance from the partition 200 to the suction member in the axial direction of the tube body 100 is L1, and the length of the flow guide tube 500 beyond the through-hole 210 is L2. The stop portion 330 is configured to abut against the end of the pipe 100 on the side of the second port 140, L1/L2. Gtoreq.2. In other words, in the present embodiment, when the end portion of the second port 140 of the pipe body 100 is abutted by the stop portion 330, the distance between the plug body 310 and the partition portion 200 can just meet the above distance requirement. In other embodiments, other limiting structures may be additionally provided to limit the distance between the plug body 310 and the partition 200, which is not described herein.

Referring to fig. 4, in some embodiments, the flow guide 500 has a liquid outlet 510 facing away from the first chamber 110, the adsorbing member 400 is a dried blood sheet, a wall surface of the dried blood sheet facing the partition 200 is arranged perpendicular to the axis of the tube body 100, and the liquid outlet 510 is located in the middle of the dried blood sheet as viewed along the axial direction of the tube body 100. In this scheme, can make the liquid sample just can just in time right in the central point that drops in the dry blood scraps of paper to make the sample pattern of adsorbing piece 400 even, the interception of follow-up sample area of being convenient for.

In some embodiments, the drive assembly 300 is configured to enable the air pressure P within the second chamber 120 (which may specifically be the sampling chamber 121) to satisfy: p is more than or equal to 20KPa and less than or equal to 80KPa. Illustratively, the air pressure P may be 20KPa, 40KPa, 60KPa, 80KPa, or the like. When the driving assembly 300 makes the air pressure in the sampling cavity 121 be the air pressure, the body fluid sample can not be splashed into the sampling cavity 121 due to the excessive air pressure in the sampling cavity 121, and the amount of the body fluid sample entering the sampling cavity 121 can not reach the practical requirement due to the insufficient air pressure in the sampling cavity 121.

Embodiments of the second aspect of the present application also provide a blood sampling device comprising a body fluid sample collection apparatus of any one of the above. In particular, when the blood sampling device is used to obtain a blood sample, the blood sampling device may further comprise a lancing portion and a flow guiding portion. The lancing portion is configured to puncture the skin of a user to obtain a blood sample and the diversion portion is configured to direct blood to the body fluid sample collection device of the previous embodiments.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims (11)

1. A body fluid sample collection device, comprising:

a tube body;

the separation part is arranged in the pipe body to separate the inner space of the pipe body into a first chamber and a second chamber which are distributed along the axial direction of the pipe body, and the separation part is provided with a flow hole which is communicated with the first chamber and the second chamber;

a drive assembly coupled to the tube for creating a pressure differential between the first chamber and the second chamber during sampling;

the absorption part is arranged in the second cavity;

the first chamber is used for acquiring a body fluid sample, and the pressure difference generated by the driving assembly sucks the body fluid sample in the first chamber into the second chamber through the circulating hole, so that the body fluid sample flowing into the second chamber is adsorbed and acquired by the adsorbing piece.

2. A body fluid sample collection device according to claim 1, wherein,

the pipe body is provided with a first port and a second port which are oppositely arranged, the first port is communicated with the first chamber, and the second port is communicated with the second chamber;

the driving assembly comprises a plug body and a plug rod connected with the plug body, the plug body is arranged in the second cavity, the plug rod penetrates out of the second cavity through the second port, the second cavity comprises a sampling cavity positioned between the plug body and the separation part, and the plug rod can drive the plug body to move in a direction away from the separation part after obtaining driving force, so that air pressure lower than that of the first cavity is generated in the sampling cavity.

3. A body fluid sample collection device according to claim 2, wherein,

the adsorption piece is detachably connected with the pipe body;

or alternatively, the first and second heat exchangers may be,

the plug body is configured to be capable of being separated from the second chamber in a direction away from the partition, and the adsorbing member is connected to a wall surface of the plug body facing the partition.

4. A body fluid sample collection device according to claim 2, wherein,

the plug body is configured to be capable of being separated from the second chamber in a direction away from the separation part, a mounting groove is formed in a wall surface of the plug body facing the separation part, and the adsorption piece is embedded in the mounting groove.

5. A body fluid sample collection device according to claim 2, wherein,

the stopper rod is connected with a stop part positioned outside the second cavity, and the stop part can move along with the stopper rod to abut against the end part of the pipe body positioned at one side of the second port so as to limit the distance between the stopper body and the separation part.

6. A body fluid sample collection device according to claim 5, wherein,

the stop portion is annular and arranged around the plug rod, and is configured to cover the second port together with the plug rod when abutting against the end portion of the pipe body on one side of the second port.

7. A body fluid sample collection device according to claim 6, wherein,

the collecting device further comprises a flow guide pipe, the flow guide pipe penetrates through the circulation hole, one end of the flow guide pipe stretches into the second cavity, and the opposite other end of the flow guide pipe is located in the circulation hole.

8. A body fluid sample collection device according to claim 7, wherein,

the distance between the separation part and the absorption part is L1, and the length of the flow guide pipe exceeding the flow hole is L2 along the axial direction of the pipe body, wherein L1/L2 is more than or equal to 2;

or alternatively, the first and second heat exchangers may be,

the plug rod is connected with a stop part positioned outside the second cavity, and the stop part can move along with the plug rod to abut against the end part of the pipe body positioned at one side of the second port so as to limit the distance between the plug body and the separation part; the distance between the separation part and the absorption part is L1, and the length of the flow guide pipe exceeding the flow hole is L2 along the axial direction of the pipe body; the stop part is configured to be in butt joint with the end part of the pipe body positioned at one side of the second port, and L1/L2 is more than or equal to 2.

9. A body fluid sample collection device according to claim 7, wherein,

the honeycomb duct has the liquid outlet that deviates from first cavity, the adsorption equipment is the dry blood scraps of paper, the dry blood scraps of paper towards the wall surface of partition portion is perpendicular to the axis of body is arranged, and follows the axial observation of body, the liquid outlet is located the middle part of dry blood scraps of paper.

10. A body fluid sample collection device according to claim 1, wherein,

the drive assembly is configured to enable the air pressure P within the second chamber to satisfy: p is more than or equal to 20KPa and less than or equal to 80KPa.

11. A blood sampling device comprising the body fluid sample collection device of any one of claims 1-10.

Images