CN215677600U - Sampling needle - Google Patents

Abstract

The utility model discloses a sampling needle, which comprises a needle head and a needle cylinder, wherein the inner cavity of the needle cylinder is a liquid storage cavity for storing reagent liquid, the top of the liquid storage cavity is sealed by a sealing plug, the bottom of the liquid storage cavity is provided with a damageable structure, the needle head comprises a needle rod and a needle point, the needle rod is connected with the bottom of the damageable structure, the outer edge of the needle rod is axially provided with a plurality of grooves b, the grooves b extend to the needle point, a plurality of spacing ribs arranged at intervals are axially arranged in the grooves b, and the grooves b between two adjacent spacing ribs form an accommodating cavity in the axial direction. The utility model has the beneficial effects that: the bottom of cylinder is provided with vulnerable structure, and when assembling sampling needle and sample thief casing, the syringe needle takes place to interfere with the drain pan of sample thief for vulnerable mechanism is damaged, is provided with the holding chamber on the syringe needle moreover, is convenient for do acquireing of thin excrement and urine sample, therefore whole sampling process easy operation, and its sampling volume can obtain guaranteeing, whole sampling needle simple structure, convenient to use, the operating personnel of being convenient for is from the survey.

Description

Sampling needle

Technical Field

The utility model relates to stool sampling, in particular to a sampling needle.

Background

In the conventional fecal occult blood detection, the excrement and urine of a subject needs to be taken for inspection and detected by professional personnel in a hospital. However, due to the high requirements for specimen preservation and transportation in stool collection and handling, the hospital participants often ignore or do not have the sense of convenience to not check the stool. The excrement inspection is the item with the highest abandon inspection rate in China and the whole world. However, fecal sample detection is the first recommended method commonly recognized by the world health organization, american society of oncology, and experts in china for intestinal cancer screening, and the specificity of fecal sample detection for intestinal cancer is close to 80% at present, while the specificity of blood detection for intestinal cancer is only about 30%.

At present, no instrument suitable for the fecal occult blood self-test exists in the market, and some immune gold-labeled fecal occult blood reagent manufacturers design respective excrement collectors, but the excrement collectors do not have sampling amount control devices and do not comprise detectors, and all detections need to open fecal liquid. At present, fecal occult blood is only carried out in professional medical institutions, and when a professional detects the fecal occult blood, feces is firstly placed in a container with a buffer solution to be dissolved, then the feces solution in the container is poured into a small cup or a small hole, and then a liquid absorption test strip is inserted into the small cup or the small hole to detect the fecal occult blood.

The current hospital excrement detection process comprises the steps of enabling a physical examiner to go to a clinical laboratory to get an excrement sampling cup, go to a toilet to collect excrement into the excrement cup, transporting the excrement into the clinical laboratory, enabling the clinical examiner to collect the excrement into a diluent to be uniformly mixed, discarding redundant excrement, opening a reagent package to take out a reagent, sucking the uniformly mixed sample by a straw, adding the sample on a reagent sample pad, and judging the result within 5-10 minutes. Excrement and liquid are open in detection, the frequency of direct vision of the excrement is high, the excrement is easy to overturn and overflow during operation, hundreds of bacteria in the excrement are easy to cause pollution, and the excrement is discarded after being used, so that secondary pollution is easy to cause.

After the feces are subjected to routine inspection and specimen collection, the inspection is finished within 1-2 hours, otherwise, the cell components in the feces can be destroyed and decomposed due to the influence of pH, digestive enzyme and the like. The excrement sample can not be collected at any time like a blood sample, so that the uncertainty of the time for a physical examiner to transport to a place needing physical examination after collecting the excrement sample from home and the time for whether the physical examiner can detect the excrement sample immediately in a clinical laboratory is also the main reason of abandoning the physical examination. The problems of unsanitary excrement transportation, time delay, embarrassment and the like are also the main reasons for abandoning the excrement.

The inventor researches a sampling needle through long-term research, and the inventor is convenient for sampling and self-testing and is convenient to operate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a sampling needle which is convenient to sample, self-test and operate.

The purpose of the utility model is realized by the following technical scheme: the utility model provides a sampling needle, including syringe needle and cylinder, the liquid storage chamber of inner chamber for storing reagent liquid of cylinder, the top in liquid storage chamber is sealed through the sealing plug, the bottom in liquid storage chamber is provided with easily decreases the structure, the syringe needle includes needle bar and needle point, needle bar and needle point are connected, the needle bar is connected with the bottom of easily decreasing the structure, a plurality of recess b have been seted up to the axial on the outer fringe of needle bar, recess b extends to the needle point, the axial is provided with the muscle that separates that a plurality of intervals set up in the recess b, in the axial direction, the recess b formation holding chamber between the muscle is separated to double-phase neighbour.

Optionally, the easily damaged structure comprises a groove a, the groove a is arranged at the bottom of the liquid storage cavity, the bottom of the groove a is a easily damaged thin wall, and the needle head is arranged on the bottom surface of the easily damaged thin wall.

Optionally, the groove a is a circular groove, and the axes of the needle and the groove a are collinear.

Optionally, an annular groove is formed in the outer side wall of the top of the needle cylinder, and a sealing ring is sleeved in the annular groove.

Optionally, the sealing ring is tapered in the axial direction.

Optionally, the top of the syringe is provided with a radially outwardly protruding stop collar.

Optionally, the number of the grooves b is four, and the grooves b are uniformly distributed on the same circumference.

Optionally, the cross-section of the groove b is triangular.

Optionally, the needle rod is cylindrical, the needle tip is conical, and the bottom of the needle tip is a flat surface.

The utility model has the following advantages: according to the sampling needle disclosed by the utility model, the reagent liquid is sealed in the needle cylinder, the bottom of the needle cylinder is provided with the easily damaged structure, when the sampling needle is assembled with the shell of the sampler, the needle head interferes with the bottom shell of the sampler, so that the easily damaged structure is damaged, the reagent liquid flows into the shell of the sampler, and in the flowing process, the reagent liquid is mixed with the object to be tested on the needle head, and then the test paper is mixed with the mixed reagent liquid, so that the self-test is completed, therefore, the sampling needle disclosed by the utility model is simple in structure, convenient to use and convenient for an operator to self-test; be provided with the holding chamber on the syringe needle, the syringe needle is when breaking away from excrement and urine, to drier excrement and urine, separates the muscle and can scrape into excrement and urine at the holding intracavity, and to thinner excrement and urine, only need insert excrement and urine with the syringe needle slope, and excrement and urine then can be automatic flows in the holding intracavity to can be applicable to the acquireing of doing thin excrement and urine sample, consequently whole sampling process easy operation, its sampling volume can obtain guaranteeing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic view of the needle;

FIG. 4 is an enlarged schematic view at I of FIG. 2;

in the figure, 100-needle head, 200-needle cylinder, 300-sealing plug, 201-sealing ring, 202-limiting ring, 203-liquid storage cavity, 204-vulnerable structure, 205-groove a, 206-vulnerable thin wall, 101-needle rod, 102-needle point, 103-groove b, 104-separating rib, 105-flat surface and 106-accommodating cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, a sampling needle comprises a needle head 100 and a syringe 200, the inner cavity of the syringe 200 is a liquid storage cavity 203 for storing reagent liquid, the bottom of the liquid storage cavity 203 is sealed by the bottom of the syringe 200, the top of the liquid storage cavity 203 is sealed by a sealing plug 300, after the reagent liquid is filled in the liquid storage cavity 203, both ends of the liquid storage cavity 203 are sealed, and therefore, the test liquid cannot leak.

In this embodiment, the bottom of the liquid storage cavity 203 is provided with a fragile structure 204, the bottom of the fragile structure 204 is provided with a needle 100, further, as shown in fig. 3, the needle comprises a needle rod 101 and a needle tip 102, the needle rod 101 is connected with the needle tip 102, and the needle rod 101 is connected with the bottom of the fragile structure, in this embodiment, the needle rod 101 and the needle tip 102 are integrally formed, the outer edge of the needle rod 101 is axially provided with a plurality of grooves b103, preferably, the grooves b103 are uniformly distributed on the same circumference, and the number of the grooves b103 is four, so that an included angle between two adjacent grooves b103 is 90 ° in the circumferential direction, the grooves b103 extend to the needle tip 102, a plurality of spaced ribs 104 are axially arranged in the grooves b103, in the axial direction, the grooves b103 between two adjacent ribs 104 form accommodating cavities 106, the cross sections of the ribs 104 are fan-shaped, when the needle is inserted into an object to be tested, after the needle is separated from the object to be tested, the object to be tested remains in the accommodating cavity 106, so that the object to be tested is extracted.

In this embodiment, the needle tip 102 is conical, the bottom of the needle tip 102 is a flat surface 105, the conical needle tip 102 facilitates the insertion of the needle into the object to be tested, the bottom of the needle tip 102 is set to be the flat surface 105, after the flat surface 105 of the needle tip 102 contacts with the object to be tested, the direction of the force applied to the needle tip 102 is the axial direction, so that the needle rod 101 is not easily subjected to the shearing force, the needle rod 101 is not easily broken, when the needle tip 102 contacts with the bottom shell of the sampler, the pressure applied to the needle tip 102 is transmitted to the fragile structure 204, and because the bottom surface of the needle tip 102 is the flat surface 105, the needle tip 102 cannot pierce through, and when the fragile structure 204 is subjected to excessive bearing force, the fragile structure 204 is damaged, at this time, the reagent liquid in the liquid storage cavity 203 flows into the shell of the sampler, and when the reagent liquid flows into the shell, the reagent liquid washes the needle tip 100, and washes the object to be tested in the accommodating cavity 106 into the shell, so that the object to be detected is mixed with the reagent solution, and the mixed reagent solution is contacted with the test paper, thereby detecting the related data of the object to be detected through the test paper.

In this embodiment, as shown in fig. 4, the vulnerable structure 204 includes a groove a205, the groove a205 is opened at the bottom of the reservoir 203, the bottom of the groove a205 is a vulnerable thin wall 206, the needle 100 is disposed on the bottom surface of the vulnerable thin wall 206, in this embodiment, needle 100, barrel 200 and frangible mechanism are formed integrally, and further, groove a205 is a circular groove, the axes of needle 100 and groove a205 are collinear, in use, after the needle 100 is in contact with the bottom case of the sampler, as the operator continuously presses the cylinder 200, thereby subjecting the needle 100 to forces, the needle 100 transmitting the forces to the frangible thin wall 206, when the external force reaches the set value, the vulnerable thin wall 206 is torn, at this time, the syringe 200 continues to descend, the needle 100 enters the liquid storage cavity 203, and when the fragile thin wall 206 is torn, the reagent liquid flows into the shell of the sampler from the torn part, and is mixed with the object to be detected in the flowing process.

In this embodiment, the annular groove has been seted up on the lateral wall at cylinder 200 top, and the annular groove endotheca has sealing washer 201, is provided with the cavity of installation cylinder 200 on the casing of sample thief, and in sealing washer 201 entered into the cavity, sealing washer 201 would then make cavity and barrel sealed, avoided reagent liquid to flow from the gap between cavity and the barrel to the reliability of sample thief use has been guaranteed.

In the present embodiment, the seal ring 201 is tapered in the axial direction. Thereby facilitating extrusion of the gasket 201 into the cavity.

In this embodiment, the top of the syringe 200 is provided with a radially outward protruding stop collar 202, the stop collar 202 can play a role in limiting, when the stop collar 202 contacts with the top of the sampler, it indicates that the syringe 200 is in place to move downward, at this time, the syringe 200 does not need to be pressed, and the assembly process of the syringe 200 and the sampler housing is completed.

In this embodiment, the sealing ring 201 is made of rubber, and the sealing plug 300 is made of rubber.

In this embodiment, the needle rod 101 may be a polygon prism or a cylinder, preferably, the needle rod 101 is cylindrical, and the groove b103 may be a U-shaped groove, a trapezoidal groove or a triangular groove, preferably, the cross section of the groove b103 is triangular, so that the needle rod 101 is convenient to machine.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims (9)

1. A sampling needle, characterized by: including syringe needle and cylinder, the liquid reserve chamber of inner chamber for storing reagent liquid of cylinder, the top in liquid reserve chamber is sealed through the sealing plug, the bottom in liquid reserve chamber is provided with easily decreases the structure, the syringe needle includes needle bar and needle point, needle bar and needle point are connected, the needle bar with easily decrease the bottom of structure and connect, a plurality of recess b have been seted up to the axial on the outer fringe of needle bar, recess b extends to the needle point, axial is provided with the muscle that separates that a plurality of intervals set up in the recess b, and on the axial direction, the double-phase adjacent recess b that separates between the muscle forms the holding chamber.

2. A sampling needle according to claim 1, characterized in that: the easy-damage structure comprises a groove a, the groove a is formed in the bottom of the liquid storage cavity, the bottom of the groove a is an easy-damage thin wall, and the needle head is arranged on the bottom surface of the easy-damage thin wall.

3. A sampling needle according to claim 2, characterized in that: the groove a is a circular groove, and the axes of the needle head and the groove a are collinear.

4. A sampling needle according to claim 1, characterized in that: an annular groove is formed in the outer side wall of the top of the needle cylinder, and a sealing ring is sleeved in the annular groove.

5. A sampling needle according to claim 4, characterized in that: the sealing ring is conical in the axial direction.

6. A sampling needle according to claim 1, characterized in that: the top of the needle cylinder is provided with a radial outward convex limiting ring.

7. A sampling needle according to any one of claims 1 to 6, characterized in that: the number of the grooves b is four, and the grooves b are uniformly distributed on the same circumference.

8. A sampling needle according to claim 7, characterized in that: the cross section of the groove b is triangular.

9. A sampling needle according to claim 1, characterized in that: the needle bar is cylindric, the needle point is coniform, and the bottom of needle point is the planishing face.

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