CN210438732U

CN210438732U - DNA collector

Info

Publication number: CN210438732U
Application number: CN201921244234.5U
Authority: CN
Inventors: 郝晓明; 孙进广; 苟春宝; 陈万昌; 陈少华; 胡跃军; 罗川; 吴有刚; 哈继军
Original assignee: Banan Public Security Sub-Bureau
Current assignee: Banan Public Security Sub-Bureau
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-05-01
Anticipated expiration: 2029-08-02

Abstract

The utility model discloses a DNA collector, including the sampling swab stick, be provided with the cotton strip that contacts with long and thin object on the sampling swab stick, the collector still includes two semi-cylindrical protection cover bodies, radially be provided with the sampling swab stick on two semi-cylindrical protection cover bodies respectively, two semi-cylindrical protection cover body both sides are equipped with the visor, equal symmetrical threaded connection has the sampling swab stick on two semi-cylindrical protection cover bodies, the rotatory fork of one end fixedly connected with of sampling swab stick, the one end that the sampling swab stick extends to the semi-cylindrical protection cover body is equipped with the collection strip, it has the cotton strip to wrap up on the collection strip, the draw-in groove has been seted up on two semi-cylindrical protection cover bodies, equal fixedly connected with card strip on two semi-cylindrical protection cover bodies, card strip and draw-in groove phase-match set up. Adopt the utility model discloses can stop swab and the material evidence to examine the outer object contact of material, can effectively prevent exogenous DNA pollution problem, market popularization and application are worth highly.

Description

DNA collector

Technical Field

The utility model relates to a DNA collector.

Background

The DNA test can make up the deficiency of serology method, so it is highly concerned by the workers of forensic physical evidence, in recent years, the development of human genome research is changing day by day, the molecular biology technology is also perfecting, and the development of these disciplines reaches unprecedented height with the continuous penetration of genome research into various disciplines.

Forensic science often involves the problem of contacting the skin with DNA remaining on the surface of an object, i.e. contacting the collection of DNA. Currently, contact DNA left on impermeable objects is typically collected by a wet and dry two-step wipe using a cotton swab or a flocked swab. When the cotton swab or the flocked swab is used for collecting the contact DNA left on a slender non-permeable object (such as a bullet, an iron wire, a steel bar and the like), the problems of inconvenient operation, long collection time, low efficiency, easy falling of the swab from the object to cause exogenous DNA pollution and the like exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a collector for gathering DNA on the slender shape object.

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

a DNA collector comprises a sampling swab rod, wherein a cotton strip which is in contact with a slender object is arranged on the sampling swab rod, and after the slender object is clamped by the sampling swab rod, the sampling swab rod and the cotton strip thereof can move relative to the slender object under the action of external force.

Furthermore, the collector also comprises two semi-cylindrical protective cover bodies, and sampling swab rods are respectively and radially arranged on the two semi-cylindrical protective cover bodies.

Further, two semicylinder protection cover body both sides are equipped with the visor, equal symmetric thread connection has the sampling swab stick on two semicylinder protection cover bodies, the rotatory fork of one end fixedly connected with of sampling swab stick, the one end that the sampling swab stick extends to the semicylinder protection cover body is equipped with the collection strip, it has cotton strip to wrap up on the collection strip, the draw-in groove has been seted up on two semicylinder protection cover bodies, equal fixedly connected with card strip on two semicylinder protection cover bodies, card strip and draw-in groove phase-match set up.

Further, gather on the strip fixedly connected with sleeve, the fixed connection has the magnetic metal piece in the sleeve, and the bottom fixed connection magnetite of sampling swab stick, magnetic metal piece and magnetite adsorb each other.

Furthermore, the two sides of the clamping groove are provided with notch grooves, the two sides of the clamping strip are symmetrically provided with convex blocks, and the notch grooves are matched with the convex blocks.

Furthermore, the outer edges of the two side ends of the two semi-cylindrical protective covers are provided with threads, and the protective covers are in threaded connection with the semi-cylindrical protective covers.

Furthermore, a perforated partition plate is fixedly connected in the protective cover, and a drying agent is filled between the protective cover and the perforated partition plate.

Furthermore, the two semi-cylindrical protective covers are made of high-light-transmission acrylic materials, and the collecting strips are made of elastic arc-shaped materials.

Has the advantages that: after the protective cover is taken down, the cotton strip on the collecting strip is wetted by water or reagent, then the slender object is placed between the two semi-cylindrical protective cover bodies, the butt joint and the clamping of the two semi-cylindrical protective covers are realized through the matching of the clamping strip and the clamping groove, the two semi-cylindrical protective covers are prevented from being staggered under the matching action of the notch groove and the convex block, the sampling swab rod is driven to move downwards by rotating the rotary fork, so that the cotton strips on the collecting strips are lightly attached to the slender objects, a user only needs to wear clean gloves to hold the objects to be sampled and then repeatedly rotate and translate the semi-cylindrical protective cover body, can accomplish DNA collection work, improve DNA collection efficiency, can stop swab and the material evidence to examine the outer object contact of material in collection and the save process, can effectively prevent exogenous DNA pollution problem, market popularization using value is high.

The collection is accomplished the back and is taken out elongated object, it is tight to install both sides lid through the visor, thereby carry out dry sealed the saving to the sample, take off the visor when waiting to inspect, protect the casing with the semicircle column separately, cut off cotton strip on a plurality of collection strips with the scissors or tweezers tear respectively, place and carry out follow-up inspection in the centrifuging tube, the user can be directly will gather the strip as required and separate with sampling swab stick, take out behind the new collection strip, only need to insert the sleeve with sampling swab stick in, let the magnetite suck the magnetism sheetmetal and can accomplish fixing of both, and convenient for operation, guarantee to carry out quick continuity sample operation.

Drawings

FIG. 1 is a schematic front structure diagram of a DNA collector in an embodiment;

FIG. 2 is a schematic perspective view of a semi-cylindrical protective cover body in the DNA collector in the embodiment;

FIG. 3 is a schematic diagram of the fitting structure of the sampling swab rod and the sleeve in the DNA collector in the embodiment.

In the figure: 1 semi-cylindrical protective cover body, 2 protective covers, 3 sampling swab rods, 4 rotary forks, 5 sleeves, 6 acquisition strips, 7 clamping grooves, 8 clamping strips, 9 notch grooves, 10 convex blocks, 11 cotton strips, 12 magnetic metal sheets, 13 magnets and 14 partition plates with holes.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Examples

Referring to fig. 1-3, a DNA collector comprises a sampling swab rod 3, a cotton strip 11 contacting with an elongated object is arranged on the sampling swab rod 3, and after the elongated object is clamped by the sampling swab rod 3, the sampling swab rod 3 and the cotton strip 11 thereof can move relative to the elongated object under the action of external force. In particular, a collector

Including two semicylinder protective cover bodies 1, two semicylinder protective cover bodies 1 are high printing opacity ya keli material and make, the outward appearance is transparent, be convenient for observe, 1 both sides of two semicylinder protective cover bodies are equipped with visor 2, two 1 both sides tip of semicylinder protective cover bodies are outer along all being equipped with the screw thread (not drawing in the screw thread picture), visor 2 passes through threaded connection on the semicylinder protective cover body 1, fixedly connected with foraminiferous baffle 14 in the visor 2, it has the drier to fill between visor 2 and the foraminiferous baffle 14, take out long and thin object after the collection is accomplished, it is tight to cover the device both sides through visor 2, thereby carry out dry sealed save to the sample, equal symmetrical threaded connection has sampling swab stick 3 on two semicylinder protective cover bodies 1.

Sampling swab stick 3's one end fixedly connected with rotary fork 4, sampling swab stick 3 extends to the one end of the half-cylinder protection cover body 1 and is equipped with collection strip 6, it makes for elastic arc material to gather strip 6, be convenient for examine the material to the material and form good parcel nature, fixedly connected with sleeve 5 on the collection strip 6, fixed connection has magnetic metal piece 12 in the sleeve 5, sampling swab stick 3's bottom fixed connection magnetite 13, magnetic metal piece 12 and magnetite 13 adsorb each other, be convenient for will gather strip 6 and sampling swab stick 3 separation, thereby but the new collection strip 6 of quick replacement.

Gather the parcel on the strip 6 and have cotton strip 11, draw-in groove 7 has been seted up on two semicylinder protective cover bodies 1, equal fixedly connected with card strip 8 on two semicylinder protective cover bodies 1, card strip 8 and draw-in groove 7 phase-match set up, opening groove 9 has been seted up to the both sides of draw-in groove 7, the bilateral symmetry of card strip 8 is equipped with protruding piece 10, opening groove 9 cooperatees with protruding piece 10, the butt joint block of two semicylinder protective cover bodies 1 is realized through the cooperation of card strip 8 with draw-in groove 7, and prevent that two semicylinder protective cover bodies 1 from producing the dislocation under opening groove 9 and protruding piece 10's mating reaction.

When in use, after the protective cover 2 is taken down, the cotton strips 11 on the collecting strips 6 are wetted by water or reagent, then the slender object is placed between the two semi-cylindrical protective cover bodies 1, the butt joint and clamping of the two semi-cylindrical protective cover bodies 1 are realized through the matching of the clamping strip 8 and the clamping groove 7, the dislocation of the two semi-cylindrical protective cover bodies 1 is prevented under the matching action of the notch groove 9 and the convex block 10, the sampling swab rod 3 is driven to move downwards through rotating the rotary fork 4, so that the cotton strips 11 on the collecting strips 6 are lightly attached to the slender object, a user only needs to take clean gloves to hold the object to be sampled, then repeatedly rotate and translate the semi-cylindrical protective cover bodies 1, the DNA collecting work can be completed, the DNA collecting efficiency is improved, the contact between the swab and an object outside a material evidence checking material can be avoided in the collecting and storing processes, and the problem of exogenous DNA pollution can be effectively prevented, market promotion using value is high, take out long and thin object after the collection is accomplished, it is tight to cover the device both sides through visor 2, thereby carry out dry sealed the saving to the sample, take off visor 2 when waiting to inspect, with half-cylinder protective cover body 1 separately, cut cotton strip 11 on a plurality of collection strips 6 with the scissors or tweezers tear respectively, place and carry out follow-up inspection in the centrifuging tube, the user can be as required directly will gather strip 6 and the excellent 3 separation of sampling swab, take out behind the new collection strip 6, only need insert in the sleeve 5 with the sampling swab stick 3, let magnetite 13 hold magnetic metal piece 12 and can accomplish fixing between them, and convenient for operation, guarantee to carry out quick continuity sample operation.

Claims

1. A DNA collector is characterized in that: the collector comprises a sampling swab rod (3), wherein a cotton strip (11) which is in contact with the slender object is arranged on the sampling swab rod (3), and after the slender object is clamped by the sampling swab rod (3), the sampling swab rod (3) and the cotton strip (11) thereof can move relative to the slender object under the action of external force.

2. The collector of claim 1, wherein: the collector also comprises two semi-cylindrical protective cover bodies (1), and sampling swab rods (3) are respectively and radially arranged on the two semi-cylindrical protective cover bodies (1).

3. A collector according to claim 2, characterized in that: two semicylinder protective cover bodies (1) both sides are equipped with visor (2), equal symmetric thread connection has sampling swab stick (3) on two semicylinder protective cover bodies (1), the one end fixedly connected with swivel fork (4) of sampling swab stick (3), the one end that sampling swab stick (3) extended to semicylinder protective cover body (1) is equipped with gathers strip (6), it has cotton strip (11) to gather the parcel on strip (6), draw-in groove (7) have been seted up on two semicylinder protective cover bodies (1), equal fixedly connected with card strip (8) on two semicylinder protective cover bodies (1), card strip (8) and draw-in groove (7) phase-match set up.

4. The DNA collector of claim 3, wherein: the collecting bar (6) is fixedly connected with a sleeve (5), a magnetic metal sheet (12) is fixedly connected in the sleeve (5), the bottom end of the sampling swab rod (3) is fixedly connected with a magnet (13), and the magnetic metal sheet (12) and the magnet (13) are mutually adsorbed.

5. The DNA collector of claim 4, wherein: opening grooves (9) are formed in two sides of the clamping groove (7), protruding blocks (10) are symmetrically arranged on two sides of the clamping strip (8), and the opening grooves (9) are matched with the protruding blocks (10).

6. The DNA collector according to any one of claims 3-5, characterized in that: the outer edges of the end parts of the two sides of the two semi-cylindrical protective cover bodies (1) are respectively provided with a thread, and the protective covers (2) are in threaded connection with the semi-cylindrical protective cover bodies (1).

7. The DNA collector of claim 6, wherein: a perforated partition plate (14) is fixedly connected in the protective cover (2), and a drying agent is filled between the protective cover (2) and the perforated partition plate (14).

8. The DNA collector according to any one of claims 3-5, characterized in that: the two semi-cylindrical protective cover bodies (1) are made of high-light-transmission acrylic materials, and the collecting strips (6) are made of elastic arc-shaped materials.

9. The DNA collector of claim 7, wherein: the two semi-cylindrical protective cover bodies (1) are made of high-light-transmission acrylic materials, and the collecting strips (6) are made of elastic arc-shaped materials.