Sterile sampling tube

Abstract

The utility model discloses a sterile sampling tube, which belongs to sampling tools and comprises a sampling tube, a sealing cover and a sampling rod, external threads are arranged on the peripheral side of the top of the sampling tube, a clamping groove is convexly formed in the peripheral side of the sampling tube below the external threads, and the caliber of the lower part of the clamping groove is expanded towards the peripheral side to form a flaring part; an internal thread matched with the sampling tube is arranged on the inner wall of the bottom of the sealing cover, the top of the sampling rod is fixedly connected with the center of the bottom of the sealing cover, and an elastic sealing piece is fixedly installed at the position, located on the peripheral side of the top of the sampling rod, of the sealing cover; and the peripheral side of the elastic sealing element is matched with the inner wall of the pipe orifice of the sampling pipe in shape. The utility model has good sealing performance, and can avoid sample leakage; and a sampling pipe orifice is expanded, so that the sampling pipe orifice is easy to touch and pollute by a sample after sampling.

Description

Technical Field

[0001] This utility model relates to the field of disposable sampling tools, and in particular to a sterile sampling tube. Background Technology

[0002] With the continuous development of medical testing technology and the gradual increase in testing items, the reliance of clinical disease diagnosis on medical testing is becoming increasingly apparent. Samples need to be collected before testing. Currently, these samples can be collected using general methods, such as first using cotton swabs or droppers to collect the sample, and then diluting it in a small test tube. However, there are also some specialized samplers that can collect specific samples. Nevertheless, there are still shortcomings in the use of existing disposable sampling tools:

[0003] 1. The tube opening is too small: After sampling, the sample is easily contaminated at the tube opening, increasing the risk of cross-contamination. Especially in the detection of microorganisms or pathogens, contaminated samples will directly affect the accuracy of the test results.

[0004] 2. Insufficient sealing performance: The sampling tube opening usually lacks a snap-fit ​​device, which makes the cap easy to slip off during transportation or storage, increasing the possibility of sample leakage or contamination.

[0005] To solve the above-mentioned technical problems, this application provides an invention of a sterile sampling tube. Utility Model Content

[0006] This invention provides a sterile sampling tube with good sealing properties, which can prevent sample leakage; it also enlarges the sampling tube opening, thus preventing the sample from easily touching and contaminating the opening after sampling.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A sterile sampling tube includes a sampling tube, a sealing cap, and a sampling rod. The sampling tube has an external thread on its top periphery. A groove is formed on the sampling tube below the external thread and on its outer periphery. The groove is widened on its outer periphery to form a flared section. The bottom inner wall of the sealing cap has an internal thread that matches the sampling tube. The top of the sampling rod is fixedly connected to the center of the bottom of the sealing cap. An elastic sealing element is fixedly installed on the sealing cap at the position on the top periphery of the sampling rod. The outer periphery of the elastic sealing element matches the shape of the inner wall at the opening of the sampling tube.

[0009] Furthermore, the sampling tube and the sealing cap are integrally formed.

[0010] Furthermore, the elastic seal is sealed and bonded to the bottom of the sealing cap and the periphery of the top of the sampling tube.

[0011] Furthermore, the elastic seal is made entirely of elastic silicone material, the elastic seal is designed as a cylindrical structure, and the elastic seal is designed as a hemispherical annular protrusion at the position corresponding to the slot; the bottom edge of the elastic seal is rounded.

[0012] Furthermore, the top of the elastic seal extends outward to form an annular sealing gasket.

[0013] Furthermore, the connection between the flared portion and the slot adopts a concave rounded corner transition.

[0014] Furthermore, a handle is provided on the top of the sealing cap.

[0015] The beneficial effects of this utility model are:

[0016] 1) The sampling rod is connected to the sealing cap. The sampling tube opening adopts an flared design to avoid touching the tube opening when inserting the sampling rod, reducing the probability of tube opening contamination. The sealing cap is connected to the sampling tube by threads to prevent the sealing cap from loosening. The sealing cap is equipped with an elastic sealing element, which forms a first sealing band with the inner wall of the tube opening. Under the force of the threaded connection, the groove and the concave and convex structure of the elastic sealing element form a tight fit to form a second sealing band, which improves the sealing effect and has excellent air tightness and liquid tightness, reducing the risk of sample leakage.

[0017] 2) Traditional sampling tubes are cylindrical tubes of the same diameter. When inserting the sampling rod, the head of the sampling rod often touches the tube wall, thus contaminating the tube opening. However, this invention has a flared part designed at the tube opening, which can avoid touching the tube opening when inserting the sampling rod, thereby reducing the risk of contaminating the tube opening.

[0018] 3) The connection structure of this utility model adopts a dual fixing method of threaded connection and elastic sealing element snap-fit, which can not only further improve the anti-loosening effect, but also further improve the sealing effect.

[0019] 4) The top of the elastic seal extends outward to form an annular sealing gasket, which forms a third sealing strip with the opening of the sampling tube. Attached Figure Description

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the sampling tube in this utility model;

[0023] Figure 3This is a schematic diagram of the structure of the sealing cap, sampling rod, and elastic sealing element in this utility model;

[0024] Figure 4 This is a schematic diagram of the sealing cap and sampling rod in this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the elastic sealing element in this utility model;

[0026] Attached image labels:

[0027] 1—Sampling tube, 2—Sealing cap, 3—Sampling rod, 4—Elastic seal, 11—External thread, 12—Slot, 13—Flanged part, 21—Internal thread, 22—Handle, 41—Annular protrusion, 42—Sealing gasket. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a central component. When a component is described as "connected to" another component, it can be directly connected to the other component or may have a central component. When a component is described as "set on" another component, it can be directly set on the other component or may have a central component. When a component is described as "set in the middle," it is not simply set in the exact center, as long as it is not set within the area defined by both ends being in the middle. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Reference Figures 1 to 5As shown, a sterile sampling tube includes a sampling tube 1, a sealing cap 2, and a sampling rod 3. The overall structure of the sampling tube 1 is similar to that of a traditional sampling tube, being a cylindrical tube structure. The difference is that the diameter of the opening of the sampling tube 1 in this invention is larger than the diameter of the tube body, and the top periphery of the sampling tube 1 is provided with an external thread 11. The sampling tube 1 has a groove 12 protruding from the lower periphery of the external thread 11 to the outer periphery. The cross-sectional structure of the groove 12 is hemispherical. The groove 12 expands its diameter from the lower periphery to the outer periphery to form a flared part 13. The flared part 13 can be a spherical structure. The connection between the flared part 13 and the groove 12 adopts an inwardly concave rounded corner transition. The flared part can directly increase the diameter of the tube opening, which can reduce the risk of touching the inner wall of the tube opening when the sampling rod 3 is inserted. The sealing cap 2 is a round cap structure, with an internal thread 21 on the bottom inner wall that matches the sampling tube 1. The top of the sampling rod 3 is fixedly connected to the bottom center of the sealing cap 2. The sampling rod 3 can be integrally formed with the sealing cap 2. The sampling rod 3 can be an adsorption type or a smear type, which can be selected according to actual needs. An elastic sealing element 4 is fixedly installed on the sealing cap 2 at the top periphery of the sampling rod 3, and the outer periphery of the elastic sealing element 4 matches the shape of the inner wall at the opening of the sampling tube 1.

[0032] Please refer to Figures 3 to 5 As shown, the elastic seal 4 is made entirely of elastic silicone material. The elastic seal 4 has a cylindrical structure, and the outer periphery of the elastic seal 4 is spaced from the internal thread of the sealing cap 3. The spacing is slightly smaller than the wall thickness of the sampling tube, and the specific dimensions can be designed according to the elasticity of the elastic seal 4. The elastic seal 4 has a hemispherical annular protrusion 41 corresponding to the slot 12; the bottom edge of the elastic seal 4 has a rounded corner transition. The top of the elastic seal 4 extends outward to form an annular sealing gasket 42. In this invention, the outer periphery of the cylindrical structure of the elastic seal 4 forms a first seal with the inner wall of the sampling tube 1. With the cooperation of the sealing cap and the threaded connection of the sampling tube, the elastic seal 4 continues to move downward until the annular protrusion 41 is tightly embedded in the slot 12, forming a second sealing band. At this time, the sealing gasket 42 is tightly attached to the end of the sampling tube 1 to form a third sealing band, which greatly improves the sealing performance of the sampling tube and effectively prevents the leakage of gas and liquid from the sample. Moreover, even if the sealing cap 2 loosens and slides upward, it can still form an anti-detachment structure and a sealing structure under the obstruction of the slot 12 and the annular protrusion 41 of the elastic seal 4, which also ensures the sealing effect.

[0033] To enhance the fixing effect between the elastic seal 4 and the sealing cap 2 and to prevent the elastic seal 4 from falling off the sealing cap 2, the elastic seal 4 is sealed and fixed to the bottom of the sealing cap 2 and the periphery of the top of the sampling tube 2 with adhesive.

[0034] To facilitate the rotation of the sealing cap 2, a handle 22 is provided on the top of the sealing cap 2. The handle 21 is a rigid sheet structure. The handle 22 is integrally formed with the top of the sealing cap 2, making it easy for the user to hold and also facilitating the rotation of the sealing cap 2 to open or close.

[0035] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the scope of the technical solution of this utility model.

Claims

1. A sterile sampling tube, characterized in that, The device includes a sampling tube, a sealing cap, and a sampling rod. The top periphery of the sampling tube has an external thread, and the sampling tube protrudes outward from the lower part of the external thread to form a groove. The groove is widened outward from the lower part to form a flared section. The bottom inner wall of the sealing cap has an internal thread that matches the sampling tube. The top of the sampling rod is fixedly connected to the center of the bottom of the sealing cap. An elastic sealing element is fixedly installed on the sealing cap at the position of the top periphery of the sampling rod. The outer periphery of the elastic sealing element matches the shape of the inner wall at the opening of the sampling tube.

2. The sterile sampling tube according to claim 1, characterized in that, The sampling tube and the sealing cap are integrally formed.

3. A sterile sampling tube according to claim 1, characterized in that, The elastic seal is sealed and bonded to the bottom of the sealing cap and the periphery of the top of the sampling tube.

4. A sterile sampling tube according to claim 3, characterized in that, The elastic seal is made entirely of elastic silicone material. The elastic seal is cylindrical in structure. The elastic seal has a hemispherical annular protrusion at the position corresponding to the slot. The bottom edge of the elastic seal is rounded.

5. A sterile sampling tube according to claim 4, characterized in that, The top of the elastic seal extends outward to form a ring-shaped sealing gasket.

6. A sterile sampling tube according to claim 5, characterized in that, The connection between the flared part and the slot is made with a concave rounded corner transition.

7. A sterile sampling tube according to claim 1, characterized in that, The sealing cap has a handle on top.

Images