CN111528924A

CN111528924A - Sampling capsule auxiliary tool

Info

Publication number: CN111528924A
Application number: CN202010402880.0A
Authority: CN
Inventors: 杨戴天杙; 包宇晖; 明繁华
Original assignee: Ankon Technologies Co Ltd
Current assignee: Ankon Technologies Co Ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2020-08-14
Anticipated expiration: 2040-05-13
Also published as: CN111528924B

Abstract

The invention provides a sampling capsule auxiliary tool which comprises a base, a sampling capsule auxiliary tool and a sampling capsule auxiliary tool, wherein the base comprises a bottom plate, a side wall positioned on one side of the bottom plate, and a fixed cavity formed by enclosing the bottom plate and the side wall; the extraction tool comprises a sleeve, a partition wall, a piston and a needle, wherein the partition wall is positioned in the sleeve and divides the sleeve into a first sleeve and a second sleeve, the piston is positioned in the first sleeve, the needle is fixed on the partition wall, the piston comprises a handheld part, a piston rod connected with the handheld part, a sealing plug connected with the piston rod and matched with the inner wall of the first sleeve, and part of the needle is positioned in the second sleeve; wherein the sampling capsule auxiliary tool has a first state in which the extraction tool is separated from the base, and a second state in which the second sleeve is engaged with the base to enable the needle to be inserted into a sampling capsule located in the fixed cavity.

Description

Sampling capsule auxiliary tool

Technical Field

The application relates to the technical field of medical equipment, in particular to a sampling capsule auxiliary tool which can reliably and conveniently improve the vacuumizing of a sampling capsule and the success rate of sample recovery.

Background

The analysis of the flora in the digestive tract is receiving more and more attention, and then the traditional means are difficult to collect the flora in the digestive tract, especially the small intestine section. The sampling capsule can finish sampling of digestive tract liquid and the like, and has the characteristics of safety, no harm, comfort and the like. In the design of a plurality of sampling capsules, a vacuum power mode is adopted, and the sampling capsule has the advantages of simple structure, stable system, small volume and the like. However, the vacuum solution also has its drawbacks, mainly in that the vacuum maintenance time is short; therefore, a 'field vacuumizing' mode is needed, and the time required for maintaining vacuum is greatly shortened. For example, by designing a silica gel soft plug in interference fit with the bin shell at the tail part of the sampling cavity of the sampling capsule, a syringe needle can be used for puncturing the soft plug to extract gas in the sampling cavity before use, and then the soft plug is used. After the capsule is recovered, the needle can be punctured from the soft plug at the tail part by using a syringe to recover the sample. However, there is still some uncertainty in such operations, such as: the user makes a mistake when penetrating the soft plug and drawing a vacuum with the needle for the first time, resulting in a failure to draw the vacuum. At this point it may be necessary to pierce the soft plug again, and the seal of the soft plug may be compromised, resulting in sampling failure.

In view of the above, there is a need for an improved sampling capsule accessory tool to solve the above problems.

Disclosure of Invention

The invention aims to provide a sampling capsule auxiliary tool which can reliably and conveniently improve the success rate of vacuumizing and recovering a sample of a sampling capsule.

In order to achieve the purpose, the invention adopts the following technical scheme:

a sampling capsule accessory tool, comprising:

the base comprises a bottom plate, a side wall positioned on one side of the bottom plate and a fixed cavity formed by the bottom plate and the side wall in an enclosing manner;

the extraction tool comprises a sleeve, a partition wall, a piston and a needle, wherein the partition wall is positioned in the sleeve and divides the sleeve into a first sleeve and a second sleeve, the piston is positioned in the first sleeve, the needle is fixed on the partition wall, the piston comprises a handheld part, a piston rod connected with the handheld part, a sealing plug connected with the piston rod and matched with the inner wall of the first sleeve, and part of the needle is positioned in the second sleeve;

wherein the sampling capsule auxiliary tool has a first state in which the extraction tool is separated from the base, and a second state in which the second sleeve is engaged with the base to enable the needle to be inserted into a sampling capsule located in the fixed cavity.

Furthermore, a through hole communicated with the fixed cavity is further formed in the bottom plate.

Further, the sampling capsule auxiliary tool also comprises an ejection structure, at least part of the ejection structure can extend into the fixing cavity from the through hole.

Further, the ejection structure comprises a top disc and an ejector pin arranged on the top disc, and the length of the ejector pin is greater than the thickness of the bottom plate.

Further, the base further includes a support portion located on an outer peripheral side of the side wall.

Further, a window is arranged on the second sleeve, and the distance from at least part of the window to one end of the second sleeve, which is far away from the first sleeve, is not less than the height of the side wall.

Furthermore, the piston rod is provided with a plurality of abutting pieces which protrude outwards, and at least part of the abutting pieces are arranged at intervals along the circumferential direction of the piston rod; or at least part of the butting pieces are arranged at intervals along the axial direction of the piston rod; or part of the abutting pieces are arranged at intervals along the circumferential direction of the piston rod, and meanwhile, part of the abutting pieces are arranged at intervals along the axial direction of the piston rod;

the sleeve is provided with a blocking plate protruding inwards, and the blocking plate is provided with a hollow part for the abutting piece to pass through.

Further, the needle head comprises an vacuumizing needle head, the vacuumizing needle head comprises a first pintle, a first needle tube and a first hole formed in one end, far away from the first pintle, of the first needle tube, and the first hole is open towards the side direction back to the first needle tube;

and/or the syringe needle includes the sample syringe needle of retrieving, retrieve the sample syringe needle include second pintle, second needle tubing, set up in second punchhole on the second needle tubing, second punchhole towards dorsad the one side of second pintle is open, and/or second punchhole towards the side of second needle tubing is open.

Further, the sampling capsule auxiliary tool further comprises a locking structure for locking the base and the extraction tool in the second state.

Furthermore, the locking structure comprises an L-shaped hole arranged on the side wall and a buckle arranged on the sleeve and capable of extending into the L-shaped hole; or, the locking structure comprises an L-shaped hole arranged on the sleeve and a buckle arranged on the side wall and capable of extending into the L-shaped hole.

Compared with the prior art, the invention has the beneficial effects that: according to the sampling capsule auxiliary tool, the base is matched with the extraction tool, so that the relative position relation between the sampling capsule and the extraction tool is ensured, the needle can penetrate into the soft rubber plug of the sampling capsule, the structure is simple, and the reliability is high; the operation is easy, the requirement on a user is low, and the stability, consistency and repeatability of the operation are improved.

Drawings

FIG. 1 is a schematic view of a sampling capsule auxiliary tool according to a preferred embodiment of the present invention;

FIG. 2 is a sectional view of the sampling capsule auxiliary tool shown in FIG. 1, cut along the axis of the sampling capsule auxiliary tool on the side where the window is provided;

FIG. 3 is a schematic view of FIG. 2 in another state;

FIG. 4 is a top view of the extraction tool of FIG. 1;

FIG. 5 is a schematic view of a sampling capsule being removed from a base by an ejection assembly;

in fig. 6, (a) is a schematic structural diagram of the vacuuming needle, and (b) is a schematic structural diagram of the sample recovery needle.

Detailed Description

The present application will now be described in detail with reference to specific embodiments thereof as illustrated in the accompanying drawings. These embodiments are not intended to limit the present application, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present application.

In the various illustrations of the present application, certain dimensions of structures or portions may be exaggerated relative to other structures or portions for ease of illustration and, thus, are provided to illustrate only the basic structure of the subject matter of the present application.

Generally, referring to fig. 1 to 3 and 5, a sampling capsule 1 includes a partition plate 11 located inside, a sampling cavity 12 located at one side of the partition plate 11, a soft rubber plug 13 disposed at one axial end of the sampling capsule 1 and communicated with the sampling cavity 12, a pressure sensor 14 disposed on the partition plate 11, and a liquid inlet 15 for liquid to enter the sampling cavity 12.

Referring to fig. 1 to 6, a sampling capsule auxiliary tool 100 of the present invention includes a base 2 for fixing a sampling capsule 1, and an extraction tool 3 for vacuuming the sampling capsule 1 or recovering a sample; by means of the cooperation of the base 2 and the extraction tool 3, the sampling capsule 1 can be evacuated or a sample can be recovered from the sampling capsule 1.

The base 2 comprises a fixation chamber 21 for fixing the sampling capsule 1. The fixing cavity 21 is cylindrical, and the inner diameter of the fixing cavity 21 is slightly larger than the outer diameter of the sampling capsule 1, for example, the inner diameter of the fixing cavity 21 is 0.1mm to 0.2mm larger than the outer diameter of the sampling capsule 1; the height of the fixation cavity 21 is not greater than the axial length of the sampling capsule 1. When in use, the sampling capsule 1 is inserted into the fixed cavity 21 along the side wall 23, and one end of the sampling capsule with the soft rubber plug 13 is exposed outwards; after the vacuum pumping or the sample recovery is finished, the sampling capsule 1 can be directly taken out.

Specifically, the base 2 includes a bottom plate 22 and a side wall 23 located on one side of the bottom plate 22, and the fixing cavity 21 is defined by the bottom plate 22 and the side wall 23. The bottom plate 22 and the side wall 23 are integrally arranged or separately structured, the bottom plate 22 is an arbitrary structure which provides a supporting force for the sampling capsule 1 at the bottom, and the side wall 23 is an arbitrary structure which limits the circumferential side of the sampling capsule 1.

Further, the bottom plate 22 further includes a support portion 24 located on an outer peripheral side of the side wall 23, and it can also be understood that the side wall 23 extends to one side at an intermediate position of the bottom plate 22, so that a part of the bottom plate 22 located outside the side wall 23 constitutes the support portion 24. When the extracting tool 3 is assembled on the base 2, the supporting portion 24 functions to limit the relative movement of the extracting tool 3 and the supporting portion 24 also functions to support the extracting tool 3 after the assembly is completed.

Further, in order to avoid the sampling capsule 1 from being blocked and difficult to take out, a through hole 25 communicated with the fixed cavity 21 is further formed in the bottom plate 22, and when the sampling capsule 1 is blocked, other tools can be adopted to penetrate through the through hole 25 to extend into the fixed cavity 21 and eject the sampling capsule 1.

Further, the sampling capsule auxiliary tool 100 further comprises an ejection structure 4 at least partially configured to extend from the through hole 25 into the fixing cavity 21 to eject the sampling capsule 1. The ejection structure 4 includes a top plate 41 and a thimble 42 disposed on the top plate 41, wherein the length of the thimble 42 is greater than the thickness of the bottom plate 22, so as to ensure that the thimble 42 can extend into the fixed cavity 21 to eject the sampling capsule 1. Preferably, the top plate 41 is not smaller than the base 2, and the top plate 41 can be placed on a horizontal workbench, the through holes 25 of the base 2 are aligned with the ejector pins 42, and the base 2 is placed on the top plate 41, which is more convenient for operation.

The extraction tool 3 comprises a sleeve 31, a partition wall 32 located within the sleeve 31 and dividing the sleeve 31 into a first sleeve 311 and a second sleeve 312, a piston 33 located within the first sleeve 311, a needle 34 fixed to the partition wall 32, part of the needle 34 being located within the second sleeve 312. The sleeve 31 and the partition wall 32 are integrally arranged or spliced to achieve the same effect.

The sampling capsule auxiliary tool 100 has a first state in which the extraction tool 3 is separated from the base 2, and a second state in which the second sleeve 312 cooperates with the base 2 to enable the needle 34 to be inserted into the sampling capsule 1 located in the fixed chamber 21. In the first state, the sampling assembly is convenient to disassemble and assemble; in the second state, the sampling capsule 1 may be evacuated or the sample may be recovered.

The piston 33 includes a handle 331, a piston rod 332 connected to the handle 331, and a sealing plug 333 connected to the piston rod 332 and engaged with the inner wall of the first sleeve 311, wherein the sealing plug 333 is a flexible rubber plug 13 and is in interference fit with the inner wall of the sleeve 31 to ensure tightness therebetween, and a sealed vacuum cavity is formed between the sealing plug 333 and the partition wall 32 when the piston 33 is withdrawn. In this embodiment, the diameter of the handheld portion 331 is larger than the diameter of the piston rod 332, so that the operation is convenient; and the sealing plug 333 is connected to an end of the piston rod 332 away from the hand-held part 331.

Furthermore, the piston rod 332 is provided with a plurality of abutting pieces 334 protruding outwards, the sleeve 31 is provided with a blocking plate 335 protruding inwards, and the blocking plate 335 is provided with a hollow portion 3351 for the abutting pieces 334 to pass through. The blocking plate 335 and the sleeve 31 are integrated or separated, and the abutting piece 334 and the piston rod 332 are integrated or separated.

At least a part of the abutting pieces 334 are arranged at intervals along the circumferential direction of the piston rod 332, when the piston 33 is rotated relative to the sleeve 31, at least one position exists, and the part of the abutting pieces 334 are all located at the hollow portion 3351, so that when the piston 33 is pulled, the abutting pieces 334 can move from one side of the blocking plate 335 to the other side. For example, the piston 33 is pulled outwards, the abutting piece 334 moves from one side of the blocking plate 335 toward the partition wall 32 to the other side of the blocking plate 335, then the piston 33 is rotated, the abutting piece 334 and the hollow portion 3351 are staggered with each other and abut against the part of the blocking plate 335 where the hollow portion 3351 is not located, so that the piston 33 is prevented from retracting, the vacuum degree in the first sleeve 311 is ensured, and the sampling capsule 1 extracted by the extraction tool 3 reaches a certain vacuum degree; when the plurality of abutting pieces 334 simultaneously abut against the blocking plate 335, the abutting force is stronger. However, in this process, the sealing plug 333 cannot pass through the blocking plate 335 and is trapped within the first sleeve 311, preventing it from being pulled out too hard.

Or, at least some of the abutting pieces 334 are arranged at intervals along the axial direction of the piston rod 332, and different vacuum degrees can be generated when the abutting pieces 334 at different positions in the axial direction of the piston rod 332 abut against the blocking plate 335.

Of course, part of the abutting pieces 334 may be disposed at intervals along the circumferential direction of the piston rod 332, or part of the abutting pieces 334 may be disposed at intervals along the axial direction of the piston rod 332, so as to achieve the above-mentioned dual effects. At this time, the abutting pieces 334 partially arranged at intervals in the circumferential direction and the abutting pieces 334 partially arranged at intervals in the axial direction are the same abutting pieces 334.

The partition wall 32 is provided with a nipple hole for fixing the needle 34; preferably, the nipple hole is located at the center of the partition wall 32 so that the axial center of the needle 34 is collinear with the axial center of the sleeve 31.

Needle 34 includes

pintle

3411,3421,

needle tube

3412,3422, and an eyelet. Functionally distinguished, the needle 34 includes an evacuation needle 341 and a recovery sample needle 342; the vacuum needle 341 includes a first needle 3411, a first needle 3412, and a first hole (not shown) opened at an end of the first needle 3412 remote from the first needle 3411. The first needle 3412 is relatively thin and the first perforation is open to the side of the first needle 3412 so as to prevent a portion of debris from entering the first perforation and blocking the first needle 3412 when inserted into the soft plug 13; the damage to the soft rubber plug 13 of the sampling capsule 1 is reduced as much as possible while the vacuum pumping effect is ensured, and the gas leakage is prevented from being too fast; in addition, after the base 2 and the extraction tool 3 are assembled, the needle 34 can penetrate the soft rubber plug 13 into the sampling cavity 12, but does not touch the partition plate 11, and is at a certain distance from the liquid inlet hole.

The recovered sample needle 342 includes a second needle plug 3421, a second needle tube 3422, and a second hole (not shown) opened on the second needle tube 3422. Said second needle tube 3422 is thicker and said second aperture may be open to the side facing away from said second pintle 3421, or may be open laterally, to facilitate faster sample recovery; meanwhile, the second needle tube 3422 is long, and after entering the sampling cavity 12, one end of the sampling cavity 12, which is away from the soft rubber plug 13, can be substantially touched, that is, the second needle tube 3422 extends to the partition plate 11, so that the sample in the sampling cavity 12 can be completely taken out as much as possible.

As can be seen from the above, the vacuuming needle 341 is substantially the same as the

needle plug

3411,3421 of the sample collection needle 342, and differs only in the thickness and length of the

needle tube

3412,3422, the position, number and orientation of the holes.

When the extraction tool 3 is assembled with the base 2, the second sleeve 312 nests with the side wall 23 and the sleeve 31 is located outside the side wall 23. The needle 34 is located within the sleeve 31 so that before the needle 34 comes into contact with the sampling capsule 1, the second sleeve 312 has already been telescoped with the side wall 23, ensuring that the needle 34 is co-linear with the axial center of the sampling capsule 1 and that the needle 34 can be inserted into the soft rubber plug 13 in order to evacuate the sampling capsule 1 or to recover a sample by pulling the piston 33.

Preferably, the volume of the first sleeve 311 is not less than 50 times the volume of the sampling cavity 12, so that when the piston 33 is pulled outwards to draw a vacuum on the sampling capsule 1, a sufficient vacuum degree can be obtained.

In addition, a window is provided on the second sleeve 312 to observe the inside. The setting positions of the windows are as follows: at least part the window apart from the distance of the second sleeve 312 deviating from one end of the first sleeve 311 is not less than the height of the side wall 23, so that the sampling capsule 1 is placed in the base 2, and after the extraction tool 3 is locked with the base 2, the sampling cavity 12, the soft rubber plug 13 and at least part of the needle 34 of the sampling capsule 1 can be observed through the window, so that the matching relation between the needle 34 and the soft rubber plug 13, the vacuum-pumping condition of the extraction tool 3 and the sample recovery result can be observed.

Referring to fig. 1 to 3, the auxiliary tool 100 for sampling capsules further includes a locking structure 5 for locking the base 2 and the extracting tool 3, so as to prevent them from being separated, and ensure that the needle 34 of the needle 34 is inserted into the soft rubber plug 13 and the extraction is stable and reliable. At this time, the auxiliary tool of the sampling capsule 1 is approximately a cylindrical shape in overall view, having a diameter of not more than 30mm and a height of not more than 200 mm.

In one embodiment, the locking structure 5 includes an L-shaped hole 51 disposed on the sidewall 23, and a catch 52 disposed on the sleeve 31 and capable of extending into the L-shaped hole 51. Or, preferably, the locking structure 5 includes an L-shaped hole 51 disposed on the sleeve 31 located at the outer side, and a buckle 52 disposed on the side wall 23 located at the inner side and capable of extending into the L-shaped hole 51, so that the position of the buckle 52 in the L-shaped hole 51 can be conveniently observed, and the two can be conveniently locked. The shape of the catch 52 is not limited as long as it can enter and move in the L-shaped hole 51, and for example, the catch 52 may be a protrusion.

When the extracting tool 3 is assembled with the base 2, the buckle 52 enters and moves along the hole extending along the axial direction in the L-shaped hole 51, when the sleeve 31 moves to the supporting part 24, the sleeve 31 is rotated, the buckle 52 enters the hole perpendicular to the axial direction, and at the moment, the buckle 52 is limited from moving along the sleeve 31 along the axial direction, namely, the base 2 and the extracting tool 3 are locked; after the evacuation or the recovery of the sample is finished, the sleeve 31 is rotated in the opposite direction, and the catch 52 leaves the hole perpendicular to the axial direction, i.e. the catch 52 is released, at which time the extraction tool 3 can be removed.

The method of using the sampling capsule auxiliary tool 100 will be described below with reference to the structure thereof, taking vacuum pumping as an example: 1) placing the base 2 on a working table, or fixing the base on the working table through adhesion or magnetic attraction and placing the base into a capsule; 2) according to the operation of vacuumizing or recovering the sample, the vacuumizing needle 341 is selected to be arranged in the extracting tool 3, then the extracting tool 3 is assembled with the base 2, and when the first locking member is matched with the second locking member, the needle 34 of the needle 34 is automatically ensured to be inserted into the sampling cavity 12; 3) the piston 33 is pulled to the top, the abutting piece 334 penetrates through the hollow portion 3351, and the piston rod 332 is rotated to make the abutting piece 334 dislocate with the hollow portion 3351 and abut against the blocking plate 335. 4) The sampling capsule 1 is started firstly, then the sampling capsule 1 is connected with an external data receiver, pressure data in the sampling cavity 12 are transmitted in real time, and prompt is given when the requirement of vacuum degree is met; at this point, the user can rotate the sleeve 31 of the suction tool, releasing the catch 52, separating the base 2 from the suction tool; then, the piston 33 is rotated, and the piston 33 is released.

In the case of recovering the sample, the difference from the above-mentioned use process is only that the recovered sample needle 342 is selected and the extracted state can be maintained after the above-mentioned combination operation. The user can observe the state of liquid recovery through the window, and can take down the extraction tool 3 after the recovery is finished, and then carry out subsequent treatment on the liquid sample.

In summary, the sampling capsule auxiliary tool 100 of the present invention, through the cooperation between the base 2 and the extraction tool 3, ensures the relative position relationship between the sampling capsule 1 and the extraction tool 3, ensures that the needle 34 can penetrate into the soft rubber plug 13 of the sampling capsule 1, and has a simple structure and high reliability; the operation is easy, the requirement on a user is low, and the stability, consistency and repeatability of the operation are improved.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the concrete description of the feasible embodiments of the present application, they are not intended to limit the scope of the present application, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present application are intended to be included within the scope of the present application.

Claims

1. A sampling capsule accessory tool, comprising:

2. The sampling capsule aid of claim 1, wherein: the bottom plate is also provided with a through hole communicated with the fixed cavity.

3. The sampling capsule aid of claim 2, wherein: the sampling capsule auxiliary tool further comprises an ejection structure, at least part of the ejection structure can extend into the fixing cavity from the through hole.

4. The sampling capsule aid of claim 3, wherein: the ejection structure comprises a top disc and an ejector pin arranged on the top disc, and the length of the ejector pin is greater than the thickness of the bottom plate.

5. The sampling capsule aid of claim 1, wherein: the base further includes a support portion located on an outer peripheral side of the side wall.

6. The sampling capsule aid of claim 1, wherein: the second sleeve is provided with a window, and the distance from at least part of the window to one end of the second sleeve, which is far away from the first sleeve, is not less than the height of the side wall.

7. The sampling capsule aid of claim 1, wherein: the piston rod is provided with a plurality of abutting pieces which protrude outwards, and at least part of the abutting pieces are arranged at intervals along the circumferential direction of the piston rod; or at least part of the butting pieces are arranged at intervals along the axial direction of the piston rod; or part of the abutting pieces are arranged at intervals along the circumferential direction of the piston rod, and meanwhile, part of the abutting pieces are arranged at intervals along the axial direction of the piston rod;

8. The sampling capsule aid of claim 1, wherein: the needle head comprises a vacuum-pumping needle head, the vacuum-pumping needle head comprises a first pintle, a first needle tube and a first hole arranged at one end of the first needle tube far away from the first pintle, and the first hole is open towards the side direction of the first needle tube;

9. The sampling capsule aid of claim 1, wherein: the sampling capsule auxiliary tool further comprises a locking structure for locking the base and the extraction tool in the second state.

10. The sampling capsule aid of claim 9, wherein: the locking structure comprises an L-shaped hole arranged on the side wall and a buckle arranged on the sleeve and capable of extending into the L-shaped hole; or, the locking structure comprises an L-shaped hole arranged on the sleeve and a buckle arranged on the side wall and capable of extending into the L-shaped hole.