CN211122024U

CN211122024U - Disposable material evidence extraction tube for criminal investigation

Info

Publication number: CN211122024U
Application number: CN201921957269.3U
Authority: CN
Inventors: 田师思; 赵雅彬
Original assignee: PEOPLE'S PUBLIC SECURITY UNIVERSITY OF CHINA
Current assignee: PEOPLE'S PUBLIC SECURITY UNIVERSITY OF CHINA
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-07-28
Anticipated expiration: 2029-11-13

Abstract

The utility model discloses a disposable material evidence extraction tube for criminal investigation, including intubate and the sealing cap of cover on the intubate, be equipped with the cotton swab in the intubate, the bayonet socket that is used for grafting cotton swab is offered to the tip that the intubate is close to the sealing cap, and the bayonet socket inboard is equipped with the flexure strip, and the cotton swab surface is equipped with a plurality of inserting grooves, and after the cotton swab inserted the intubate, the flexure strip was pegged graft with the inserting groove. When the cotton swab injects the bayonet socket, the flexure strip inclines along cotton swab entering direction, when outwards taking out the cotton swab, the flexure strip resets along the cotton swab direction of taking out to in the inserting groove of tight joint on the cotton swab, be difficult to like this after the once-used by the people take out behind the cotton swab with intubate and closing cap reutilization, avoided examining the material contaminated, guaranteed to extract the authenticity of material evidence.

Description

Disposable material evidence extraction tube for criminal investigation

Technical Field

The utility model relates to an equipment technical field is used to the policeman, and more specifically the saying so relates to a disposable material evidence extraction tube is used in criminal investigation.

Background

The existing evidence obtaining extractor for criminal investigation comprises an insertion tube and a sealing cap sleeved on the insertion tube, wherein a bayonet is arranged at the insertion opening of the insertion tube, an air hole and a filter membrane are arranged on the sealing cap, and a cotton swab is arranged in the insertion tube. The cotton swab is tightly inserted into the joint of the bayonet and the cotton swab, and the cotton swab is fixed by the friction force of the bayonet, so that the cotton swab is easily pulled out by a person after disposable use and then is reinserted into the cotton swab to secondarily utilize the cannula and the sealing cap, and if the cotton swab is not thoroughly sterilized, secondary pollution is easily caused, and the extracted material evidence loses authenticity.

Therefore, how to provide a disposable material evidence extraction tube for criminal investigation, so that the extraction tube can not be reused after being used once, and the authenticity of the extracted material evidence is a problem that needs to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a disposable material evidence extraction tube for criminal investigation for can not used repeatedly again after the extraction tube disposable, in order to guarantee to extract the authenticity of material evidence.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a disposable material evidence extraction tube for criminal investigation, includes intubate and cover sealing cap on the intubate, be equipped with the cotton swab in the intubate, the intubate is close to sealing cap's tip is offered and is used for pegging graft the bayonet socket of cotton swab, the bayonet socket inboard is equipped with the flexure strip, the cotton swab surface is equipped with a plurality of inserting grooves, the cotton swab inserts behind the intubate, the flexure strip with the inserting groove is pegged graft.

According to the technical scheme, compare with prior art, the utility model discloses a disposable material evidence extraction tube is used in criminal investigation, when the cotton swab injects the bayonet socket, the flexure strip gets into the direction slope along the cotton swab, when outwards taking out the cotton swab, the flexure strip is taken out the direction along the cotton swab and is reset, and in the inserting groove of tight joint on the cotton swab, be difficult to after once using like this by the people take out behind the cotton swab with intubate and closing cap reutilization, avoided examining the material and polluted, the authenticity of extracting the material evidence has been guaranteed.

Further, the elastic pieces are arranged on the inner side of the insertion tube in a ring shape. The elastic pieces clamp and fix different parts of the cotton swab at the same time, and the cotton swab is not easy to be drawn out by people.

Furthermore, one end of each elastic sheet is a fixed end which is integrally connected with the inner side wall of the insertion pipe, the other end of each elastic sheet is an insertion end, and the outer surface of each insertion end is a tooth-shaped surface. Because of the cotton stick is mostly wooden material, when the flexure strip acted on the cotton stick, the tooth profile can increase with the frictional force of cotton stick, and the tooth on the tooth profile can insert the inserting groove cell wall even, and then can firmly fix the cotton stick, makes people be difficult for taking out the cotton stick from the intubate.

Further, the intubate is close to the tip periphery side an organic whole of sealing cap is connected with the joint flange, sealing cap one end is the blind end, and the other end is the opening end, just the joint groove has been seted up on the opening end inside wall, the joint flange with joint groove joint for sealing cap and intubate are connected more firmly, and the sealing cap is difficult for droing, can avoid the material evidence in the intubate to suffer the pollution of external impurity because of the sealing cap drops.

Further, a sealing ring is arranged between the open end and the insertion tube. The leakproofness of material evidence extraction tube is improved, avoids the dust to enter into the intubate and pollute the material evidence.

Furthermore, a heat-insulating interlayer is arranged in the wall of the cannula. Can play the heat preservation effect to the material evidence in the intubate, guarantee the authenticity of material evidence.

Furthermore, the heat-insulating interlayer is filled with one of air, heat-insulating cotton and foam.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1-2 are schematic structural views of a disposable material evidence extraction tube for criminal investigation provided by the utility model.

Fig. 3 is a schematic diagram of the arrangement structure of the elastic sheets.

FIG. 4 is a schematic view of the structure of the cotton bud.

Wherein: 1-inserting tube, 11-bayonet, 12-clamping flange, 13-heat preservation interlayer, 2-sealing cap, 21-clamping groove, 3-cotton stick, 31-inserting groove, 4-elastic sheet, 41-tooth surface and 5-sealing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model discloses disposable material evidence extraction tube for criminal investigation, including intubate 1 and the sealing cap 2 of cover on intubate 1, be equipped with cotton swab 3 in the intubate 1, bayonet socket 11 that is used for pegging graft cotton swab 3 is offered to the tip that intubate 1 is close to sealing cap 2, and bayonet socket 11 inboard is equipped with

flexure strip

4, and 3 surfaces of cotton swab are equipped with a plurality of inserting grooves 31, and a plurality of inserting grooves 31 set up along 3 barred body length direction intervals of cotton swab, and after cotton swab 3 inserted intubate 1, flexure strip 4 pegged graft with inserting groove 31.

The elastic piece 4 is plural, and the plural elastic pieces 4 are annularly arranged inside the cannula 1. Specifically, one end of each elastic sheet 4 is a fixed end which is integrally connected with the inner side wall of the insertion tube 1, the other end of each elastic sheet is an insertion end, and the outer surface of each insertion end is a tooth-shaped surface 41. The fixed end is of a large-end structure, and the inserting end is of a small-end structure.

The periphery of the end part of the intubation tube 1 close to the sealing cap 2 is integrally connected with a clamping flange 12, one end of the sealing cap 2 is a closed end, the other end of the sealing cap is an open end, a clamping groove 21 is formed in the inner side wall of the open end, and the clamping flange 12 is clamped with the clamping groove 21.

A sealing ring 5 is arranged between the open end and the insertion tube 1.

A heat-insulating interlayer 13 is arranged in the pipe wall of the insertion pipe 1, and one of air, heat-insulating cotton and foam is filled in the heat-insulating interlayer 13.

Specifically, when cotton swab 3 injects bayonet 11, flexure strip 4 inclines (as figure 1) along the 3 direction of inserting of cotton swab, when outside pull cotton swab 3, flexure strip 4 resets (as figure 2) along the 3 directions of taking out of cotton swab to tightly the joint in the inserting groove 31 on cotton swab 3, be difficult to like this after the once-used by the people take out behind the cotton swab 3 with intubate 1 and 2 reutilization of closing cap, avoided examining the material and polluted, guaranteed to extract the authenticity of material evidence.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a disposable material evidence extraction tube for criminal investigation, includes intubate (1) and cover sealing cap (2) on intubate (1), be equipped with cotton swab (3) in intubate (1), intubate (1) is close to the bayonet socket (11) of cotton swab (3) are seted up to the tip of sealing cap (2) and are used for pegging graft, its characterized in that, bayonet socket (11) inboard is equipped with flexure strip (4), the surface of the excellent body of cotton swab (3) is equipped with a plurality of inserting grooves (31), cotton swab (3) insert behind intubate (1), flexure strip (4) with inserting groove (31) are pegged graft.

2. The disposable criminal investigation evidence extraction tube according to claim 1, characterized in that the plurality of elastic pieces (4) are arranged in a ring shape inside the insertion tube (1).

3. The disposable material evidence extraction tube for criminal investigation of claim 2, wherein each of the elastic sheets (4) has one end being a fixed end integrally connected to the inner sidewall of the insertion tube (1) and the other end being a plug end, the outer surface of the plug end being a tooth-shaped surface (41).

4. The disposable material evidence extraction tube for criminal investigation of claim 3, wherein the fixed end is a big end structure and the insertion end is a small end structure.

5. The disposable material evidence extraction tube for criminal investigation of any one of claims 1 to 4, wherein the cannula (1) is integrally connected with a clamping flange (12) near the outer periphery of the end of the sealing cap (2), one end of the sealing cap (2) is a closed end, the other end of the sealing cap is an open end, a clamping groove (21) is formed in the inner side wall of the open end, and the clamping flange (12) is clamped with the clamping groove (21).

6. A disposable criminal investigation evidence extraction tube according to claim 5, characterized in that a sealing ring (5) is arranged between the open end and the cannula (1).

7. The disposable criminal investigation evidence extraction tube according to any one of claims 1-4, characterized in that a heat insulation interlayer (13) is arranged in the wall of the cannula (1).

8. The disposable material evidence extraction tube for criminal investigation of claim 7, wherein the heat insulation interlayer (13) is filled with one of air, heat insulation cotton and foam.