Novel sampling needle

Abstract

The utility model discloses a novel sampling needle, which particularly relates to the technical field of sampling needles and comprises a sampler, a piston plate is arranged in the sampler, the top end of the piston plate penetrates through the sampler and extends out of the top of the sampler, the bottom of the sampler is in threaded connection with a collecting needle, and a fixing mechanism for fixing the piston plate is arranged at the top of the sampler. The fixing mechanism comprises a sealing cover arranged at the top of the sampler, a placing groove is formed in the sealing cover, a connecting rod is arranged in the placing groove, a limiting plate is arranged in the placing groove, one end of the connecting rod is fixedly connected with the limiting plate, the top of the limiting plate penetrates through the sealing cover and extends out of the top of the sealing cover, and a fixing plate is fixedly arranged at the top of the limiting plate; an inserting rod is fixedly arranged at one end of the fixing plate, and an inserting hole is formed in the piston plate. The piston plate can be fixed through the fixing mechanism, a sample is prevented from being extruded out of the sampler, the interior of the sampler can be cleaned through the dismounting mechanism, and the next extraction of the sample is prevented from being influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampling needle technical field, concretely relates to a novel sampling needle. BACKGROUND

[0002] The component analysis instrument (for example biochemical analysis instrument, blood analysis instrument, urine analysis instrument and the component analysis instrument commonly used in chemical industry petroleum industry) when testing operation, the first step operation is to collect sample liquid, at this time needs to use sampling needle to complete the collection of sample.

[0003] For example, a kind of sampling needle provided in Chinese patent application with the publication number CN215677600U, including needle and needle cylinder, the inner cavity of needle cylinder is the liquid storage chamber of storage reagent liquid, the top of liquid storage chamber is sealed by sealing plug, the bottom of liquid storage chamber is provided with frangible structure, needle includes needle stem and needle tip, needle stem and needle tip are connected, needle stem is connected with the bottom of frangible structure, a plurality of recesses b are axially formed on the outer edge of needle stem, recess b extends to needle tip, a plurality of interval setting spacer ribs are axially arranged in recess b, in axial direction, the recess b between two adjacent spacer ribs forms accommodating cavity. The beneficial effects of this technical solution are: the bottom of needle cylinder is provided with frangible structure, when sampling needle is assembled with sampler shell, needle head interferes with the bottom shell of sampler, so that frangible mechanism is damaged, and accommodating cavity is provided on needle head, which facilitates the acquisition of dry and loose fecal sample, so that the whole sampling process is simple to operate, the sampling amount can be guaranteed, the whole sampling needle structure is simple, convenient to use, and easy for operator to test.

[0004] However, the technical scheme still has the following problems: after the sample is collected in the technical scheme, the piston plate is not fixed, when the piston plate is accidentally touched, the piston plate is extruded, which can easily extrude the sample from the inside of the collector, thereby affecting the collection of sample UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a novel sampling needle to solve the problem that sample is extruded from the inside of collector due to the fact that piston plate is not fixed in prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a novel sampling needle, including sampler, the inside of sampler is equipped with piston plate, the top end of piston plate penetrates sampler and extends out the top of sampler, the bottom of sampler is screw connected with collection needle, the top of sampler is equipped with the fixed mechanism that fixes piston plate.

[0007] Further, the fixing mechanism comprises a sealing cover arranged at the top of the sampler, a placement slot is arranged in the sealing cover, a connecting rod is arranged in the placement slot, a limiting plate is arranged in the placement slot, one end of the connecting rod is fixedly connected with the limiting plate, the limiting plate penetrates through the sealing cover and extends out of the top of the sealing cover, a fixing plate is fixedly arranged at the top of the limiting plate, a plug-in rod is fixedly arranged at one end of the fixing plate, a plug-in hole is arranged on the piston plate, the plug-in rod and the plug-in hole are matched, and the plug-in rod is used for fixing the piston plate.

[0008] Further, the front end of the connecting rod penetrates through the sealing cover and extends out of the front side of the sealing cover, a handle is fixedly arranged at the front end of the connecting rod, a spring is fixedly arranged at one side of the limiting plate, the front end of the spring is fixedly connected with the inner wall of the sealing cover, and the connecting rod is located in the spring and used for driving the limiting plate to move.

[0009] Further, the top of the sampler is provided with a dismounting mechanism for conveniently mounting and dismounting the sealing cover, the dismounting mechanism comprises a first supporting plate arranged at the bottom of the sealing cover, the top of the sampler is provided with a second supporting plate, a plurality of first threaded holes are arranged on the second supporting plate, a plurality of second threaded holes are arranged on the first supporting plate, and the second threaded holes and the first threaded holes in communication are threadedly connected with the same bolt, so that the sealing cover can be conveniently mounted and dismounted.

[0010] Further, a plurality of first through holes are arranged on the collection needle, and a plurality of second through holes are arranged on the bottom of the sampler, so that the collection needle can be sealed.

[0011] Further, the sampler is externally provided with a marking mechanism for marking the volume of the extracted sample, the marking mechanism comprises two supporting rods arranged at the two sides of the piston plate respectively, a marking plate is fixedly arranged at the bottom of each supporting rod, and a marking scale line is processed on the front side of the sampler, so that the volume of the extracted sample can be marked.

[0012] The utility model has the advantages that:

[0013] 1, after taking the sample, the spring at one side of the limiting plate is not subjected to the tension force any more, the spring drives the limiting plate to move by utilizing the elasticity thereof, the limiting plate drives the fixing plate to move, the plug-in rod is inserted into the plug-in hole by utilizing the movement of the fixing plate, the plug-in rod can be used for fixing the piston plate, and the sample can be prevented from being squeezed out of the sampler;

[0014] 2, the bolt is rotated, the bolt is rotated out of the first threaded hole and the second supporting plate, then the sealing cover is pulled, the sealing cover is taken off from the top of the sampler, the inside of the sampler can be cleaned, and the extraction of the sample in the next time can be prevented from being affected. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained from the provided drawings without creative labor.

[0016] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, for understanding and reading by those skilled in the art, and are not used to limit the implementation conditions of the present application, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0017] Figure 1 The front view provided by the present application is shown in the figure.

[0018] Figure 2 The structure schematic diagram of the present application is shown in the figure.

[0019] Figure 3 The structure schematic diagram of the first through hole provided by the present application is shown in the figure.

[0020] Figure 4 The structure schematic diagram of the second through hole provided by the present application is shown in the figure.

[0021] Figure 5 The structure schematic diagram of the fixing mechanism provided by the present application is shown in the figure.

[0022] Figure 6 The structure schematic diagram of the dismounting mechanism provided by the present application is shown in the figure.

[0023] Figure 7 The sectional view of the collector and the collection needle provided by the present application is shown in the figure.

[0024] In the figure:

[0025] 1 sampler, 2 piston plate;

[0026] 3 fixing mechanism, 301 sealing cover, 302 placing groove, 303 connecting rod, 304 limiting plate, 305 fixed plate, 306 plug-in rod, 307 plug-in hole, 308 handle, 309 spring;

[0027] 4 dismounting mechanism, 401 first supporting plate, 402 second supporting plate, 403 first threaded hole, 404 second threaded hole, 405 bolt;

[0028] 5 marking mechanism, 501 support rod, 502 marking plate, 503 scale line;

[0029] 6 collection needle, 7 first through hole, 8 second through hole. DETAILED DESCRIPTION

[0030] The following is a specific embodiment of the present application, those skilled in the art can easily understand the advantages and effects of the present application from the disclosure, obviously, the described is a part of the present application, rather than all. Based on the present application, all other obtained by those skilled in the art without creative work belong to the scope of the present application.

[0031] As shown in Figures 1-7 A new sampling needle, comprising a sampler 1, a piston plate 2 is arranged inside the sampler 1, the top end of the piston plate 2 penetrates the sampler 1 and extends out of the top of the sampler 1, the bottom of the sampler 1 is threadedly connected with a collection needle 6, the top of the sampler 1 is provided with a fixing mechanism 3 for fixing the piston plate 2, the outside of the sampler 1 is provided with a marking mechanism 5 for marking the volume of the extracted sample, the marking mechanism 5 comprises two support rods 501 arranged on both sides of the piston plate 2 respectively, each support rod 501 is fixedly provided with a marking plate 502 at the bottom, a marking scale line 503 is processed on the front side of the sampler 1, a plurality of first through holes 7 are formed on the collection needle 6, and a plurality of second through holes 8 are formed on the bottom of the sampler 1;

[0032] The collection needle 6 is placed inside the sample, then the piston plate 2 is pulled, the sample is sucked into the collection needle 6 by the piston plate 2, and then enters the inside of the sampler 1 through the first through hole 7 and the second through hole 8, the piston plate 2 moves while driving the marking plate 502 to move, the moving distance of the marking plate 502 on the marking scale line 503 is used to judge the volume of the extracted sample, after the sample is taken out, the collection needle 6 is rotated, the first through hole 7 and the second through hole 8 are not communicated by the collection needle 6, so as to avoid sample leakage.

[0033] As shown in Figure 5 The fixing mechanism 3 comprises a sealing cover 301 arranged on the top of the sampler 1, a placing groove 302 is formed in the inside of the sealing cover 301, a connecting rod 303 is arranged in the inside of the placing groove 302, a limiting plate 304 is arranged in the inside of the placing groove 302, one end of the connecting rod 303 is fixedly connected with the limiting plate 304, the top of the limiting plate 304 penetrates the sealing cover 301 and extends out of the top of the sealing cover 301, a fixed plate 305 is fixedly arranged on the top of the limiting plate 304, one end of the fixed plate 305 is fixedly arranged with a plug-in rod 306, a plug-in hole 307 is formed on the piston plate 2, and the plug-in rod 306 and the plug-in hole 307 are matched with each other;

[0034] As shown in Figure 5As shown, the front end of the connecting rod 303 penetrates the sealing cover 301 and extends out of the front side of the sealing cover 301, the front end of the connecting rod 303 is fixedly provided with a handle 308, one side of the limiting plate 304 is fixedly provided with a spring 309, the front end of the spring 309 is fixedly connected with the inner wall of the sealing cover 301, and the connecting rod 303 is located inside the spring 309;

[0035] After the sample is taken, the handle 308 is loosened, the spring 309 on one side of the limiting plate 304 is no longer subjected to tension, the spring 309 drives the limiting plate 304 to move by using the elasticity thereof, the limiting plate 304 drives the fixed plate 305 to move, the fixed plate 305 drives the plug-in rod 306 to move, the plug-in rod 306 is plugged into the plug-in hole 307, the plug-in rod 306 can be used to fix the piston plate 2, and the sample is prevented from being squeezed out of the sampler 1.

[0036] As shown in the drawings, Figure 6 The sampler 1 is provided at the top with a dismounting mechanism 4 for conveniently mounting and dismounting the sealing cover 301, the dismounting mechanism 4 comprises a first supporting plate 401 arranged at the bottom of the sealing cover 301, the sampler 1 is provided at the top with a second supporting plate 402, a plurality of first threaded holes 403 are formed in the second supporting plate 402, a plurality of second threaded holes 404 are formed in the first supporting plate 401, and the same bolt 405 is threadedly connected in the second threaded hole 404 and the first threaded hole 403 in communication;

[0037] The bolt 405 is rotated to be turned out of the first threaded hole 403 and the second supporting plate 402, then the sealing cover 301 is pulled, and the sealing cover 301 is taken off from the top of the sampler 1, so that the inside of the sampler 1 can be cleaned, and the extraction of the sample in the next time is prevented from being affected.

[0038] Although the above has been described in detail with general description and specific embodiments of the present application, some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the present application, all belong to the scope of protection required by the present application.

Claims

1. A new type of sampling needle comprising a sampler (1), characterized in that: The sampler (1) is internally provided with a piston plate (2), the top end of the piston plate (2) penetrates the sampler (1) and extends out of the top of the sampler (1), the bottom of the sampler (1) is threadedly connected with a collection needle (6), and the top of the sampler (1) is provided with a fixing mechanism (3) for fixing the piston plate (2); The fixing mechanism (3) comprises a sealing cover (301) arranged at the top of the sampler (1), a placing groove (302) is formed in the sealing cover (301), a connecting rod (303) is arranged in the placing groove (302), a limiting plate (304) is arranged in the placing groove (302), one end of the connecting rod (303) is fixedly connected with the limiting plate (304), the top of the limiting plate (304) penetrates the sealing cover (301) and extends out of the top of the sealing cover (301), a fixed plate (305) is fixedly arranged at the top of the limiting plate (304), and a plug rod (306) is fixedly arranged at one end of the fixed plate (305); a plug hole (307) is formed in the piston plate (2), and the plug rod (306) and the plug hole (307) are matched.

2. The novel sampling needle according to claim 1, characterized in that: The front end of the connecting rod (303) penetrates the sealing cover (301) and extends out of the front side of the sealing cover (301), and a handle (308) is fixedly arranged at the front end of the connecting rod (303).

3. The novel sampling needle of claim 1, wherein: The limiting plate (304) is fixedly provided with a spring (309) on one side, the front end of the spring (309) is fixedly connected with the inner wall of the sealing cover (301), and the connecting rod (303) is located in the spring (309).

4. The novel sampling needle of claim 1, wherein: The top of the sampler (1) is provided with a dismounting mechanism (4) for conveniently mounting and dismounting the sealing cover (301); The dismounting mechanism (4) comprises a first supporting plate (401) arranged at the bottom of the sealing cover (301), a second supporting plate (402) arranged at the top of the sampler (1), a plurality of first threaded holes (403) formed in the second supporting plate (402), a plurality of second threaded holes (404) formed in the first supporting plate (401), and a same bolt (405) threadedly connected in the second threaded hole (404) and the first threaded hole (403) in communication.

5. The novel sampling needle of claim 1, wherein: A plurality of first through holes (7) are formed in the collection needle (6), and a plurality of second through holes (8) are formed in the bottom of the sampler (1).

6. The novel sampling needle of claim 1, wherein: The sampler (1) is externally provided with a marking mechanism (5) for marking the volume of the extracted sample; The marking mechanism (5) comprises two supporting rods (501) arranged on the two sides of the piston plate (2), respectively, a marking plate (502) is fixedly arranged at the bottom of each supporting rod (501), and a marking scale line (503) is processed on the front side of the sampler (1).

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