CN219942880U - Sample preservation tube with suction head - Google Patents

Abstract

The utility model relates to the technical field of in-vitro diagnosis, in particular to a sample preservation tube with a suction head, which comprises a tube body and a tube cover, wherein a liquid storage cavity with an open upper end and a closed lower end is formed in the interior of the tube body in a hollow manner, the liquid storage cavity is used for storing samples, the lower end of the tube cover is detachably connected with the upper end of the tube body, a liquid moving tank with a variable volume is formed in the interior of the upper end of the tube cover in a hollow manner, the bottom of the liquid moving tank is connected with the suction head, the suction head is accommodated in the liquid storage cavity, and the samples are sucked or extruded through the suction head when the volume of the liquid moving tank changes. The sample can be stored through the pipe body liquid storage cavity, and can be sampled through the pipe cover in a pipetting mode, so that the sampling operation steps are simpler, the sampling operation without consumable materials such as suction heads can be realized, the use of related consumable materials can be obviously reduced, and the cost is saved; the steps of taking the suction head and discarding the suction head can be omitted, the mechanical complexity of an automatic instrument can be effectively reduced, and the volume and the manufacturing cost of the instrument are reduced.

Description

Sample preservation tube with suction head

Technical Field

The utility model relates to the technical field of in-vitro diagnosis, in particular to a sample preservation tube with a suction head.

Background

In vitro diagnosis refers to the in vitro analysis of blood, urine, effusion, tissue, cerebrospinal fluid, exfoliated cells, swab, saliva and other samples collected by a human body in a laboratory or a clinical laboratory by adopting different technical platforms of different subjects such as immunity, biochemistry, pathology, molecules, mass spectrum and the like, and the diagnosis result is used for assisting a doctor to diagnose and treat the illness state of a patient.

The in vitro diagnosis is based on the premise that samples are obtained, and the preservation and transportation of the samples have certain influence on the diagnosis result.

Currently, there are 2 sampling methods for a sample storage tube: on an automatic instrument, the mechanical arm needs to complete 5 steps of screwing, sucking head taking, pipetting, sucking head beating and screwing; the same is true for the manual operation by the inspector. In the steps, the repeated processes of sucking the head and sucking the head exist, so that the storage space of consumable materials is increased on the instrument, and the volume of the instrument is increased; in manual operation, there is a risk of sample contamination and biohazard due to the direct contact of the tip with the clinical sample.

Therefore, there is a need for a sample holding tube with a pipette tip for performing sampling operation without consumable materials such as pipette tip.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a sample storage tube with a suction head capable of realizing sample storage and pipetting.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a sample preservation tube with a suction head, which comprises a tube body and a tube cover, wherein a liquid storage cavity with an open upper end and a closed lower end is formed in the interior of the tube body in a hollow manner, the liquid storage cavity is used for storing samples, the lower end of the tube cover is detachably connected with the upper end of the tube body, a liquid moving cabin with a variable volume is formed in the interior of the upper end of the tube cover in a hollow manner, the bottom of the liquid moving cabin is connected with the suction head, the suction head is accommodated in the liquid storage cavity, and the samples are sucked or extruded through the suction head when the volume of the liquid moving cabin changes.

Preferably, the lower end of the pipe cover is connected with the upper end of the pipe body through screw thread fit.

Preferably, the outer circumferential surface of the tube cover is formed with vertical stripe-shaped concave-convex textures.

Preferably, the upper end of the tube cover is made of a material which can be elastically deformed by extrusion, so that the volume of the liquid transferring tank can be elastically changed by extrusion.

Preferably, the upper end of the tube cover is provided with a supporting column which is internally communicated up and down along the axial direction and a piston which is arranged in the supporting column in an axially movable way, the suction head is connected with the lower end of the supporting column, and a liquid transferring cabin is formed between the piston and the suction head at intervals.

Preferably, the piston is connected to the support post by a threaded fit.

Preferably, a clamping groove is formed in the upper end face of the piston and is used for being clamped and matched with an operation tool for moving the piston.

Preferably, the pipe body is provided with a limiting boss, and the limiting boss is used for being abutted with the lower end of the pipe cover.

Preferably, a limiter with the inside penetrating up and down along the axial direction is arranged in the liquid storage cavity, and the suction head is movably inserted into the limiter.

Preferably, the lower end of the limiter extends to the bottom of the liquid storage cavity, and the limiter is provided with a communication port which radially penetrates through the peripheral side wall of the limiter.

Compared with the prior art, the utility model has obvious progress:

according to the sample preservation tube with the suction head, the liquid moving cabin and the suction head are arranged on the tube cover, so that the sample preservation tube with the suction head can preserve samples through the liquid storing cavity of the tube body and can also be used for liquid moving and sampling through the tube cover, and the sampling step of the sample preservation tube is shortened to three steps of opening the cover, taking the suction head, liquid moving and sampling, discarding the suction head and closing the cover in the prior art, so that the sampling operation step is simpler. From the perspective of consumable use quantity and cost, the sample preservation pipe with the suction head has the suction head, so that sampling operation of consumable without suction head and the like is realized, the use of related consumable can be obviously reduced, and the cost is saved. From the aspect of automation, the sampling operation step of the sample storage tube with the suction head provided by the utility model omits the steps of taking the suction head and discarding the suction head, so that the mechanical complexity of an automatic instrument can be effectively reduced, and the volume and the manufacturing cost of the instrument are reduced.

Drawings

FIG. 1 is a perspective view showing a first embodiment of a sample holding tube with a suction head according to an embodiment of the present utility model.

FIG. 2 is a front view of the sample holding tube with suction head of FIG. 1.

Fig. 3 is a cross-sectional view taken along A-A in fig. 2.

FIG. 4 is a perspective view showing a second embodiment of a sample holding tube with a suction head according to an embodiment of the present utility model.

FIG. 5 is a front view of the sample holding tube with suction head of FIG. 4.

Fig. 6 is a sectional view taken along the direction B-B in fig. 5.

FIG. 7 is a perspective view of a first embodiment of a tube cover in a sample storage tube with a pipette tip according to an embodiment of the present utility model.

Fig. 8 is a front view of the tube cap shown in fig. 7.

Fig. 9 is a cross-sectional view taken along the direction C-C in fig. 8.

FIG. 10 is a perspective view of a second embodiment of a tube cap in a sample holding tube with tip style according to an embodiment of the present utility model, with the piston removed.

Fig. 11 is a front view of the tube cap shown in fig. 10.

Fig. 12 is a sectional view taken along the direction D-D in fig. 11.

Fig. 13 is a perspective view of a piston provided in the tube cap shown in fig. 10.

Fig. 14 is a front view of the piston shown in fig. 13.

Fig. 15 is a top view of the piston shown in fig. 13.

FIG. 16 is a perspective view showing a first embodiment of a body of a sample storage tube with a suction head according to an embodiment of the present utility model.

Fig. 17 is a front view of the pipe body shown in fig. 16.

Fig. 18 is a sectional view taken along the direction E-E in fig. 17.

FIG. 19 is a perspective view showing a second embodiment of a pipe body in a sample storage pipe with a suction head according to an embodiment of the present utility model.

Fig. 20 is a front view of the pipe body shown in fig. 19.

Fig. 21 is a cross-sectional view taken along the direction F-F in fig. 20.

Wherein reference numerals are as follows:

1. pipe body

10. Liquid storage cavity

11. External thread of pipe body

12. Spacing boss

13. Limit device

14. Communication port

2. Pipe cover

20. Liquid transferring tank

21. Suction head

22. Concave cavity

23. First internal thread

24. Vertical strip-shaped concave-convex texture

25. Support column

250. Limiting groove

26. Piston

260. Clamping groove

261. Piston external thread

262. Piston connecting rod

263. Piston bottom

27. Second internal thread

Detailed Description

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present utility model and are not intended to be limiting.

In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

Referring to FIGS. 1 to 21, there is shown an embodiment of a sample holding tube with a suction head according to the present utility model.

Referring to fig. 1 to 6, the sample storage tube with suction head of the present embodiment includes a tube body 1 and a tube cover 2. The inside cavity of pipe shaft 1 is formed with and is deposited liquid chamber 10, and the upper end of depositing liquid chamber 10 is open and the lower extreme is sealed, deposits liquid chamber 10 and is used for the storage sample. The lower extreme of tube cap 2 is connected with the upper end detachably of tube shaft 1, and when the lower extreme of tube cap 2 and the upper end of tube shaft 1 were connected, tube cap 2 was closed the upper end opening of depositing liquid chamber 10. The upper end of the tube cover 2 is hollow and formed with a liquid transferring tank 20, and the volume of the liquid transferring tank 20 is variable. The bottom of the liquid transferring tank 20 is connected with a suction head 21, the suction head 21 is accommodated in the liquid storing cavity 10, the suction head 21 is hollow, and the upper end and the lower end of the suction head 21 are respectively communicated with the liquid transferring tank 20 and the liquid storing cavity 10. The pipette tip 21 is used to aspirate a sample, and the sample is aspirated or squeezed out through the pipette tip 21 when the volume of the pipetting tank 20 changes.

By adopting the sample preservation tube with the suction head in the embodiment, samples can be preserved through the liquid storage cavity 10 of the tube body 1, during sampling, the suction head 21 can suck the samples stored in the liquid storage cavity 10 of the tube body 1 into the liquid storage cavity 20 through the volume change of the liquid storage cavity 20 on the tube cover 2, then the tube cover 2 is separated from the tube body 1, the samples sucked into the liquid storage cavity 20 can be carried by the tube cover 2 for liquid transfer and sampling, the samples in the liquid storage cavity 20 are extruded through the suction head 21 through the volume change of the liquid storage cavity 20, sampling can be realized, and then the tube cover 2 is connected with the tube body 1, so that a primary sampling process is completed.

Therefore, the sample preservation tube with the suction head of the embodiment is provided with the liquid transferring cabin 20 and the suction head 21 on the tube cover 2, so that the sample preservation tube with the suction head can preserve samples through the liquid storing cavity 10 of the tube body 1 and can also be subjected to liquid transferring sampling through the tube cover 2, and the sampling step of the sample preservation tube is shortened to three steps of uncovering, liquid transferring sampling and cover closing from five steps of uncovering, suction head taking, liquid transferring sampling, suction head discarding and cover closing in the prior art, so that the sampling operation step is simpler. From the perspective of consumable use quantity and cost, the sample preservation pipe with the suction head of the embodiment is provided with the suction head 21, so that sampling operation of consumable without suction head and the like is realized, the use of related consumable can be obviously reduced, and the cost is saved. From the aspect of automation, the sampling operation step of the sample storage tube with the suction head in the embodiment omits the steps of taking the suction head and discarding the suction head, so that the mechanical complexity of an automatic instrument can be effectively reduced, and the volume and the manufacturing cost of the instrument are reduced.

In this embodiment, preferably, the lower end of the pipe cover 2 is connected to the upper end of the pipe body 1 by screw-fitting, and the connection and separation of the lower end of the pipe cover 2 and the upper end of the pipe body 1 can be achieved by screwing the pipe cover 2. Preferably, referring to fig. 9 and 12, the lower end surface of the tube cover 2 is concavely formed with a concave cavity 22, the concave cavity 22 is positioned below the liquid transferring tank 20, the concave cavity 22 and the liquid transferring tank 20 are separated from each other, the upper end of the suction head 21 is positioned in the concave cavity 22 and communicated with the liquid transferring tank 20, the lower end of the suction head 21 extends out of the concave cavity 22, and the inner peripheral side wall of the concave cavity 22 is provided with a first internal thread 23; referring to fig. 16 and 19, a pipe body external thread 11 is provided on the outer circumferential surface of the upper end of the pipe body 1; referring to fig. 3 and 6, during assembly, the lower end of the pipe cover 2 is sleeved outside the upper end of the pipe body 1 through the concave cavity 22, the first internal thread 23 in the concave cavity 22 at the lower end of the pipe cover 2 is matched and connected with the pipe body external thread 11 at the upper end of the pipe body 1, and the suction head 21 is accommodated in the liquid storage cavity 10.

Further, referring to fig. 8 and 11, in this embodiment, vertical strip-shaped concave-convex textures 24 are formed on the outer peripheral surface of the tube cover 2, so that an operator or a mechanical arm can clamp the tube cover 2 firmly when screwing the tube cover 2, and smooth screwing is ensured.

In this example, referring to fig. 7 to 9, in the first embodiment of the tube cap 2, the upper end of the tube cap 2 is made of a material that can be elastically deformed by being pressed, so that the volume of the liquid transfer tank 20 can be elastically changed by being pressed. Thus, by squeezing and releasing the upper end of the tube cap 2, a change in volume of the pipetting chamber 20 can be achieved, thereby sucking or squeezing out a sample through the pipette tip 21. The material that can be elastically deformed by extrusion is not limited, and for example, a polymer material such as polypropylene or polyethylene can be used.

Referring to fig. 10 to 15, in the second embodiment of the tube cap 2, the upper end of the tube cap 2 is provided with a support column 25 and a piston 26, the inside of the support column 25 is penetrated up and down in the axial direction, the piston 26 is axially movably installed in the support column 25 and closes the upper end inside the support column 25, a suction head 21 is connected to the lower end of the support column 25 and communicates with the lower end inside the support column 25, and a liquid transfer tank 20 is formed between the piston 26 and the suction head 21 at an interval. By this, a change in volume of the pipetting chamber 20 can be achieved by an axial displacement of the piston 26 in the support column 25, so that a sample is sucked or squeezed out by the pipette tip 21. Preferably, the piston 26 is connected to the support post 25 by a threaded fit, and axial movement of the piston 26 within the support post 25 is achieved by twisting the piston 26. In this embodiment, the inner peripheral side wall of the upper end of the support column 25 is provided with the second internal thread 27, the outer peripheral surface of the upper end of the piston 26 is provided with the piston external thread 261, and when assembling is performed, the piston 26 is sleeved inside the upper end of the support column 25, and the piston external thread 261 of the upper end of the piston 26 is matched and connected with the second internal thread 27 of the upper end of the support column 25, the upper end of the piston 26 provided with the piston external thread 261 is connected with the piston bottom 263 through the piston connecting rod 262, the outer peripheral surface of the piston bottom 263 is matched with the inner peripheral surface of the support column 25 in a sliding manner, the tightness is ensured, and the interval between the lower end surface of the piston bottom 263 and the suction head 21 forms the liquid transferring cabin 20. Preferably, a clamping groove 260 is provided on an upper end surface of the piston 26, and the clamping groove 260 is used for clamping and matching with an operation tool (such as a mechanical arm) for moving the piston 26 so as to facilitate screwing the piston 26. Preferably, a limit groove 250 is formed on the upper end surface of the support column 25.

In this embodiment, referring to fig. 16 to 18, in the first embodiment of the pipe body 1, a limiting boss 12 is provided on the pipe body 1, and the limiting boss 12 is used to abut against the lower end of the pipe cover 2, so as to limit the relative position when the pipe cover 2 is assembled with the pipe body 1. Preferably, the limit boss 12 is located at the lower end side of the pipe body external thread 11 at the upper end of the pipe body 1, and when the pipe cover 2 is screwed to the lower end of the pipe cover 2 to abut against the limit boss 12, the pipe cover 2 reaches the assembly limit position and cannot be continuously screwed downwards. Preferably, the stopper 13 is provided in the liquid storage chamber 10, the inside of the stopper 13 is penetrated up and down in the axial direction, and the suction head 21 is movably inserted into the inside of the stopper 13. The limiter 13 is used for accommodating and storing the suction head 21, and plays a role in limiting and positioning the suction head 21, so that the suction head 21 is prevented from being put in the liquid storage cavity 10 of the pipe body 1 after the sampled swab or the sampled brush is put in. Preferably, the lower end of the limiter 13 extends to the bottom of the liquid storage cavity 10, so that the lower end of the suction head 21 can extend to the bottom of the liquid storage cavity 10 in the limiter 13, the lower end of the limiter 13 is connected with the pipe body 1, the limiter 13 is provided with a communication port 14 penetrating through the peripheral side wall of the limiter 13 along the radial direction, so that the suction head 21 can suck samples, and the communication port 14 is preferably in a slender rectangle. The bottom of the reservoir 10 of the tube body 1 is preferably in the shape of an inverted cone so that the sample can be collected at the bottom of the reservoir 10, thereby facilitating the suction of the sample by the suction head 21.

Referring to fig. 19 to 21, in the second embodiment of the tube body 1, the tube body 1 is a cylinder, the interior of the cylinder is hollow, the upper end of the cylinder is open, and the lower end of the cylinder is closed, so as to form a liquid storage cavity 10, and the bottom of the liquid storage cavity 10 is preferably in an inverted cone shape, so that samples can be gathered at the bottom of the liquid storage cavity 10, and the suction head 21 can suck the samples conveniently; the outside of the upper end of the cylinder is provided with a pipe body external thread 11 for connecting the pipe cover 2.

Fig. 1 to 3 show a first embodiment of a sample storage tube with a suction head according to this example, and in the first embodiment, a tube cap 2 according to the first embodiment shown in fig. 7 to 9 and a tube body 1 according to the first embodiment shown in fig. 16 to 18 are used together.

Fig. 4 to 6 show a second embodiment of the sample storage tube with a suction head according to the present example, in which the tube cap 2 of the second embodiment shown in fig. 10 to 15 and the tube body 1 of the second embodiment shown in fig. 19 to 21 are used together.

Of course, the mating combination of the cap 2 and the body 1 is not limited to the above two, and the cap 2 of any one embodiment may be used in combination with the body 1 of any one embodiment.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims (10)

1. The utility model provides a take suction head style sample to preserve pipe, its characterized in that includes pipe shaft (1) and tube cap (2), inside cavity of pipe shaft (1) is formed with upper end open-ended and lower extreme confined liquid chamber (10) that deposits, liquid chamber (10) are used for storing the sample, the lower extreme of tube cap (2) with the upper end detachably of pipe shaft (1) is connected, the inside cavity of upper end of tube cap (2) is formed with variable volume's liquid-transferring tank (20), the bottom of liquid-transferring tank (20) is connected with suction head (21), suction head (21) hold in liquid chamber (10), liquid-transferring tank (20) volume is through suction head (21) absorbs or extrudes the sample when changing.

2. The sample storage tube with suction head according to claim 1, wherein the lower end of the tube cover (2) is connected with the upper end of the tube body (1) through screw thread fit.

3. The sample storage tube with suction head according to claim 2, wherein the tube cover (2) has a vertical stripe-like concave-convex texture (24) formed on its outer peripheral surface.

4. The pipette tip sample holding tube according to claim 1, wherein the upper end of the tube cover (2) is made of a material which can be elastically deformed by being pressed, so that the volume of the pipetting tank (20) can be elastically changed by being pressed.

5. The sample storage tube with suction head according to claim 1, wherein the upper end of the tube cover (2) is provided with a support column (25) which is penetrated up and down in the axial direction and a piston (26) which is installed in the support column (25) in the axial direction in a movable manner, the suction head (21) is connected with the lower end of the support column (25), and the space between the piston (26) and the suction head (21) forms the liquid transferring cabin (20).

6. The pipette tip style sample holding tube as recited in claim 5, wherein said piston (26) is connected to said support post (25) by a screw-fit.

7. The sample storage tube with suction head according to claim 5, wherein a clamping groove (260) is provided on an upper end surface of the piston (26), and the clamping groove (260) is used for being in clamping fit with an operation tool for moving the piston (26).

8. The sample preservation pipe with the suction head according to claim 1, wherein a limiting boss (12) is arranged on the pipe body (1), and the limiting boss (12) is used for being abutted with the lower end of the pipe cover (2).

9. The sample storage tube with the suction head according to claim 1, wherein a stopper (13) which is penetrated up and down in the axial direction is arranged in the liquid storage cavity (10), and the suction head (21) is movably inserted into the stopper (13).

10. The sample storage tube with suction head according to claim 9, wherein the lower end of the stopper (13) extends to the bottom of the liquid storage cavity (10), and the stopper (13) is provided with a communication port (14) penetrating through the peripheral side wall of the stopper (13) in the radial direction.