Sample collector

Abstract

The utility model relates to the technical field of sample detection, in particular to a sample collector which comprises a sampling barrel, a pricking needle tube is connected in the sampling barrel in a sliding mode, a curved neck ring tube is arranged at the bottom of a fixing groove block, a blocking ball is arranged in the curved neck ring tube, a spiral curved tube is fixedly connected to the bottom of the curved neck ring tube, and the spiral curved tube is fixedly connected to the bottom of the fixing groove block. And the bottom of the spiral curved pipe is fixedly connected with a liquid drawing head. According to the sample collector, a pricking needle tube is in sliding connection with a sampling barrel through a second spring rod, a liquid suction head and a curved neck ring tube are in sliding connection with a fixed groove block through a through tube and a first spring rod, and when a press button block is pressed to extrude an air bag block, a negative pressure area is formed in the curved neck ring tube and a spiral curved tube; at the moment, the liquid drawing head pushes the pricking needle tube to move downwards to be punctured into the skin, blood is rapidly drawn through the liquid drawing head, after the blood is sucked into the spiral curved tube, the air pressure drives the blocking ball to ascend and block the upper tube opening of the curved neck annular tube, the blood cannot continue to be sucked and ascend, and rapid trace blood drawing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sample detection, in particular to a sample collector. Background Art

[0002] As the name suggests, a sample collector is an instrument for quantitative sampling of some liquid or solid components. It is commonly used in biological, chemical and other tests, especially biological tests on human cell genes. It is usually necessary to collect human cell samples through vascular blood or oral saliva through a sample collector to facilitate subsequent testing operations.

[0003] After construction, according to the utility model patent with Chinese patent publication number CN208640721U, a blood sample collection device for blood testing is disclosed. The blood sample collection device in the utility model patent is to adjust the position of the piston rod in the piston tube through the adjusting cap after the puncture needle is inserted into the blood vessel, so that the inside of the blood storage tube reaches a negative pressure state, which is convenient for controlling the speed of blood sampling. However, combined with the blood drawing structure of the blood sample collection device, it can be seen that when drawing blood, the piston rod needs to be manually pulled to complete the blood drawing work. Medical staff need to closely observe the position of the piston rod in the piston tube and the changes in the liquid scale in the sampling test tube, which is inconvenient when using blood collection and cannot achieve fast micro-blood collection operations. On the other hand, the needle part of the blood collection device cannot be automatically retracted after blood collection, and medical staff are prone to pricking their hands with the exposed needle due to careless operation. Therefore, the blood collection structure of the blood sample collection device for blood testing needs to be further improved, so a sample collector is proposed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The technical problem to be solved by the utility model is to provide a sample collector which is convenient and fast for micro-blood sampling and can store and protect the needle.

[0006] (II) Technical solution

[0007] To achieve the above object, the utility model provides the following technical solutions: a sample collector, comprising a sampling cylinder, a puncture needle tube is slidably connected to the inside of the sampling cylinder, and a micro-sampling structure is arranged inside the puncture needle tube;

[0008] The micro-sampling structure includes a fixed groove block threadedly connected to the inner top wall of the puncture needle tube, a first spring rod fixedly connected to the bottom of the fixed groove block, a curved neck ring tube is arranged at the bottom of the fixed groove block, a sealing ball is arranged inside the curved neck ring tube, a filter plate is fixedly connected to the inside of the curved neck ring tube, a spiral curved tube is fixedly connected to the bottom of the curved neck ring tube, and a liquid drawing head is fixedly connected to the bottom of the spiral curved tube.

[0009] Furthermore, a thread groove is provided on the inner top wall of the puncture needle tube, a thread layer matching the thread groove is provided on the outside of the fixed groove block, a through tube with a glass structure is slidably connected inside the fixed groove block, an airbag block is fixedly connected to the top of the through tube, the airbag block is filled with an airbag ball, and the bottom of the airbag ball is through-connected to the top of the through tube.

[0010] Furthermore, the top of the airbag block is movably connected to a push button block, the bottom of the push button block is fixedly connected to the top of the airbag ball, the number of the first spring rods is two, the two first spring rods each include a No. 1 vertical rod and a No. 1 buffer spring structure, the bottoms of the two No. 1 vertical rods are fixedly connected to a No. 1 ring plate, the outer side of the through tube is slidably connected to the outside of the two No. 1 vertical rods, and the bottom of the through tube passes through the No. 1 ring plate and is connected to the top of the curved neck ring tube.

[0011] Furthermore, the outer side of the curved neck ring tube is an elliptical structure, and the inner side of the curved neck ring tube is a circular structure, the number of the sealing beads and the filter plate are two, the ball diameters of the two sealing beads are larger than the upper end diameter of the curved neck ring tube, and the ball diameters of the two sealing beads are smaller than the lower end diameter of the curved neck ring tube.

[0012] Furthermore, a telescopic limiting structure is provided on the outside of the puncture needle tube, and the telescopic limiting structure includes two second spring rods fixed to the top wall of the sampling tube, and the two second spring rods each include a No. 2 vertical rod and a No. 2 buffer spring structure, the outer side of the puncture needle tube is slidingly connected to the outside of the two No. 2 vertical rods, and a No. 2 ring plate is fixedly connected to the bottom of the two No. 2 vertical rods, and the outside of the puncture needle tube is fixedly connected to two pressure rings.

[0013] Furthermore, two No. 1 top blocks are fixedly connected to the bottom of one of the pressure rings, the length of one of the No. 1 top blocks is greater than the length of the other No. 1 top block, and the top of the other pressure ring is fixedly connected to a No. 2 top block.

[0014] Furthermore, a collar seat is fixedly installed inside the sampling barrel, and a limit ring is rotatably connected to the inner side of the collar seat. The top and bottom of the limit ring are both elliptical slope structures, and balls are movably connected to the top right and bottom left of the limit ring. A liquid collection port is provided at the bottom of the puncture needle tube, and a notch is provided at the bottom of the sampling barrel, and a sealing cover is threadedly connected to the outside of the notch.

[0015] Beneficial Effects

[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0017] 1. The sample collector slides the puncture needle tube into connection with the sampling tube through the second spring rod, slides the liquid drawing head and the curved neck ring tube into connection with the fixed groove block through the through tube and the first spring rod, and when the button block is pressed to squeeze the air bag block, a negative pressure area is formed inside the curved neck ring tube and the spiral curved tube. At this time, the liquid drawing head pushes the puncture needle tube to move down and pierce the skin, and blood is quickly drawn through the liquid drawing head. After the blood is sucked into the spiral curved tube, the air pressure drives the sealing ball to rise and blocks the upper tube opening of the curved neck ring tube, so that the blood cannot be sucked up further, thereby realizing the operation of rapid trace blood drawing.

[0018] 2. For the sample collector, the button block is pressed, and the through tube drives the liquid drawing head below to push the puncture needle tube downward. At this time, one of the No. 1 top blocks of one of the pressure rings presses down the limiting ring. Since the top and bottom of the limiting ring are both elliptical slope structures, the limiting ring will be pushed to rotate. At this time, the balls at the top and bottom of the limiting ring are respectively contacted and engaged with one of the No. 1 top blocks and the No. 2 top block, so that the other pressure ring cannot move up, thereby limiting the extension of the puncture needle tube. When the puncture needle tube needs to be stored, the button block is pressed again. At this time, the other No. 1 top block of one of the pressure rings presses down the limiting ring, forcing the ball to rotate, so that the limiting ring continues to rotate, and the No. 2 top block is separated from the ball, so that the puncture needle tube can rise and retract, preventing the puncture needle tube from stabbing the hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the sampling tube structure of the utility model;

[0020] Figure 2 for Figure 1 A cross-sectional view of the sampling tube structure in perspective;

[0021] Figure 3 for Figure 2 A cross-sectional view of the needle tube structure from a viewing angle;

[0022] Figure 4 for Figure 2 Schematic diagram of the limiting ring structure in the viewing angle;

[0023] Figure 5 for Figure 4 rear view of perspective;

[0024] Figure 6 for Figure 4 Schematic diagram of the limiting ring structure in the viewing angle;

[0025] Figure 7 for Figure 3 Front view of the curved neck ring tube structure in perspective;

[0026] Figure 8 for Figure 7 Cross-sectional view of the curved neck ring tube structure in perspective;

[0027] Fig. 9 for Figure 8 Top view of the curved neck ring tube structure from perspective.

[0028] In the figure: 1, sampling tube; 2, puncture needle tube; 3, micro-sampling structure; 301, fixed slot block; 302, first spring rod; 303, curved neck ring tube; 304, blocking ball; 305, filter plate; 306, spiral curved tube; 307, liquid drawing head; 4, through pipe; 5, air bag block; 6, button block; 7, telescopic limit structure; 701, second spring rod; 702, pressure ring; 703, limit ring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-9 A sample collector comprises a sampling barrel 1, a puncture needle tube 2 is slidably connected inside the sampling barrel 1, a micro-sampling structure 3 is arranged inside the puncture needle tube 2, a through tube 4 with a glass structure is slidably connected inside the fixed groove block 301, an airbag block 5 is fixedly connected to the top of the through tube 4, a button block 6 is movably connected to the top of the airbag block 5, pressing the button block 6 forces the airbag ball inside the airbag block 5 to shrink, and a telescopic limiting structure 7 is arranged outside the puncture needle tube 2.

[0031] The micro-sampling structure 3 includes a fixed groove block 301 threadedly connected to the inner top wall of the puncture needle tube 2, a first spring rod 302 is fixedly connected to the bottom of the fixed groove block 301, a curved neck ring tube 303 is arranged at the bottom of the fixed groove block 301, and a blocking ball 304 is arranged inside the curved neck ring tube 303. The blocking ball 304 can block the upper tube opening of the curved neck ring tube 303 to prevent blood from entering the through tube 4, a filter plate 305 is fixedly connected inside the curved neck ring tube 303, and a spiral curved tube 306 is fixedly connected to the bottom of the curved neck ring tube 303. The spiral curved tube 306 can prevent blood from rising quickly and slow down the blood drawing speed, and a liquid drawing head 307 is fixedly connected to the bottom of the spiral curved tube 306.

[0032] The telescopic limiting structure 7 includes two second spring rods 701 fixed to the inner top wall of the sampling tube 1, two pressure rings 702 are fixedly connected to the outside of the puncture needle tube 2, and an axial ring seat is fixedly installed inside the sampling tube 1. The inner side of the axial ring seat is rotatably connected to a limiting ring 703, and the top block structure of the pressure ring 702 can push the limiting ring 703 to rotate.

[0033] according to Figure 2 and Figure 3 As shown, the outside of the fixed groove block 301 is connected to the threaded groove on the inner top wall of the puncture needle tube 2 through a threaded layer, so that the fixed groove block 301 can be easily taken out from the inside of the puncture needle tube 2. By pressing the button block 6, the button block 6 squeezes the airbag ball structure to discharge the air in the through tube 4 and the curved neck ring tube 303, forming a negative pressure area, which is convenient for blood drawing and suction.

[0034] according to Figure 2 and Figure 3 As shown, when the button block 6 is pressed, the airbag ball contracts and the airbag block 5 pushes the through tube 4 downward. The through tube 4 slides vertically along the outer side of the No. 1 vertical rod and squeezes the No. 1 buffer spring to cause it to undergo elastic deformation. At this time, the through tube 4 drives the liquid drawing head 307 below to move downward synchronously, and the liquid drawing head 307 is used to push the puncture needle tube 2 downward to facilitate puncture of the human skin.

[0035] according to Figure 3 and Figure 8 As shown, after the air in the curved neck ring tube 303 is discharged, the blocking ball 304 falls onto the filter plate 305 below, the pressure button block 6 is released, and the airbag ball rebounds to draw blood through the puncture needle tube 2 and the liquid drawing head 307. The blood first enters the spiral curved tube 306. The spiral structure of the spiral curved tube 306 can slow down the rising flow rate of blood to prevent it from being sucked too quickly. At this time, the blocking ball 304 rises with the air pressure and is clamped with the upper tube mouth of the curved neck ring tube 303, blocking the blood passage and preventing blood from entering the inside of the through tube 4, thereby realizing a micro-blood collection operation. At this time, the air pressure in the curved neck ring tube 303 is maintained stable, and the blood sample is stored in the inside of the spiral curved tube 306 and the lower tube mouth of the curved neck ring tube 303.

[0036] according to Figure 3 and Figure 4 as well as Figure 6 As shown, by pressing the button block 6, the liquid-drawing head 307 pushes the puncture needle tube 2 downward, causing the two pressure rings 702 outside the puncture needle tube 2 to move downward. At this time, one of the No. 1 top blocks at the bottom of one of the pressure rings 702 presses down the elliptical slope structure at the top of the limiting ring 703, forcing the limiting ring 703 to rotate along the side with a higher slope. At this time, the ball on the right side of the top of the limiting ring 703 contacts and engages with the other No. 1 top rod, and the ball on the left side of the bottom of the limiting ring 703 contacts and engages with the No. 2 top block on the top of the other pressure ring 702. After releasing the button block 6, the ball on the left side of the bottom of the limiting ring 703 will limit the rise of the other pressure ring 702, thereby achieving the effect of limiting the position of the puncture needle tube 2 extending out of the sampling tube 1.

[0037] according to Figure 3 and Figure 4 as well as Figure 6As shown, when the puncture needle tube 2 needs to be retracted, the button block 6 is pressed again, and the other No. 1 push rod will squeeze the ball on the right side of the top of the limiting ring 703 to make it roll, and force the limiting ring 703 to rotate, so that the ball on the left side of the bottom of the limiting ring 703 is separated from the No. 2 push block. At this time, the other pressure ring 702 can rise normally, and the puncture needle tube 2 is retracted into the sampling tube 1 for storage, so as to prevent the puncture needle tube 2 from being exposed outside the sampling tube 1 and stabbing the hand.

[0038] In summary, the sample collector connects the puncture needle tube 2 with the sampling tube 1 through the second spring rod 701 in a sliding manner, and connects the liquid drawing head 307 and the curved neck ring tube 303 with the fixed groove block 301 through the through tube 4 and the first spring rod 302 in a sliding manner. When the button block 6 is pressed to squeeze the air bag block 5, a negative pressure area is formed inside the curved neck ring tube 303 and the spiral curved tube 306. At this time, the liquid drawing head 307 pushes the puncture needle tube 2 to move downward and pierce the skin, and blood is quickly drawn through the liquid drawing head 307. After the blood is sucked into the spiral curved tube 306, the air pressure drives the blocking ball 304 to rise and blocks the upper tube mouth of the curved neck ring tube 303, so that the blood cannot continue to be sucked up, thereby realizing the operation of rapid trace blood drawing. By pressing the button block 6, the through tube 4 drives the liquid drawing head 307 below to push the puncture needle tube 2 downward. At this time, one of the pressure rings 702 is One of the No. 1 top blocks presses down the limiting ring 703. Since the top and bottom of the limiting ring 703 are both elliptical slope structures, the limiting ring 703 will be pushed to rotate. At this time, the balls at the top and bottom of the limiting ring 703 are respectively in contact and engaged with one of the No. 1 top blocks and the No. 2 top block, so that the other pressing ring 702 cannot move up, thereby limiting the extension of the puncture needle tube 2. When the puncture needle tube 2 needs to be stored, the button block 6 is pressed again. At this time, the other No. 1 top block of one of the pressing rings 702 presses down the limiting ring 703, forcing the ball to rotate, so that the limiting ring 703 continues to rotate, and the No. 2 top block is separated from the ball, so that the puncture needle tube 2 can rise and retract, preventing the puncture needle tube 2 from stabbing the hand, thereby solving the problem that the blood sample collection device for blood testing in the above-mentioned background technology cannot realize the rapid micro-blood collection operation and is inconvenient to store the needle part after use.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sample collector, comprising a sampling tube (1), characterized in that: The sampling cylinder (1) is slidably connected to a puncture needle tube (2), and a micro-sampling structure (3) is arranged inside the puncture needle tube (2); The micro-sampling structure (3) comprises a fixed groove block (301) threadedly connected to the inner top wall of the puncture needle tube (2); the bottom of the fixed groove block (301) is fixedly connected to a first spring rod (302); the bottom of the fixed groove block (301) is provided with a curved neck ring tube (303); the interior of the curved neck ring tube (303) is provided with a blocking ball (304); the interior of the curved neck ring tube (303) is fixedly connected to a filter plate (305); the bottom of the curved neck ring tube (303) is fixedly connected to a spiral curved tube (306); the bottom of the spiral curved tube (306) is fixedly connected to a liquid drawing head (307).

2. A sample collector according to claim 1, characterized in that: The inner top wall of the puncture needle tube (2) is provided with a thread groove, the outside of the fixed groove block (301) is provided with a thread layer adapted to the thread groove, the inside of the fixed groove block (301) is slidably connected to a through tube (4) of a glass structure, the top of the through tube (4) is fixedly connected to an airbag block (5), the inside of the airbag block (5) is filled with an airbag ball, and the bottom of the airbag ball is through-connected to the top of the through tube (4).

3. A sample collector according to claim 2, characterized in that: The top of the airbag block (5) is movably connected to a push button block (6), the bottom of the push button block (6) is fixedly connected to the top of the airbag ball, the number of the first spring rods (302) is two, the two first spring rods (302) each include a No. 1 vertical rod and a No. 1 buffer spring structure, the bottoms of the two No. 1 vertical rods are fixedly connected to a No. 1 ring plate, the outer side of the through pipe (4) is slidably connected to the outside of the two No. 1 vertical rods, and the bottom of the through pipe (4) passes through the No. 1 ring plate and is connected to the top of the curved neck ring pipe (303).

4. A sample collector according to claim 1, characterized in that: The outer side of the curved neck ring tube (303) is an elliptical structure, and the inner side of the curved neck ring tube (303) is a circular structure. The number of the blocking balls (304) and the filter plate (305) is two, and the ball diameters of the two blocking balls (304) are both larger than the upper end diameter of the curved neck ring tube (303), and the ball diameters of the two blocking balls (304) are both smaller than the lower end diameter of the curved neck ring tube (303).

5. The sample collector according to claim 1, characterized in that: The outside of the puncture needle tube (2) is provided with a telescopic limiting structure (7), the telescopic limiting structure (7) comprises two second spring rods (701) fixed to the inner top wall of the sampling tube (1), the two second spring rods (701) each comprising a second vertical rod and a second buffer spring structure, the outside of the puncture needle tube (2) is slidably connected to the outside of the two second vertical rods, the bottoms of the two second vertical rods are fixedly connected to a second ring plate, and the outside of the puncture needle tube (2) is fixedly connected to two pressure rings (702).

6. A sample collector according to claim 5, characterized in that: The bottom of one of the pressure rings (702) is fixedly connected to two No. 1 top blocks, the length of one of the No. 1 top blocks is greater than the length of the other No. 1 top block, and the top of the other pressure ring (702) is fixedly connected to a No. 2 top block.

7. The sample collector according to claim 1, characterized in that: A collar seat is fixedly installed inside the sampling tube (1), and the inner side of the collar seat is rotatably connected to a limit ring (703). The top and bottom of the limit ring (703) are both elliptical slope structures, and the right side of the top and the left side of the bottom of the limit ring (703) are movably connected to balls. The bottom of the puncture needle tube (2) is provided with a liquid collection port, and the bottom of the sampling tube (1) is provided with a notch, and the outside of the notch is threadedly connected to a sealing cover.

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