CN215534572U

CN215534572U - Cotton swab for dry-wet two-step evidence obtaining

Info

Publication number: CN215534572U
Application number: CN202121200212.6U
Authority: CN
Inventors: 严安心; 凃政; 王冲; 赵兴春; 赵禾苗; 罗冰科; 钟巧梅; 黄利维
Original assignee: Wuhan Ruibo Kechuang Biotechnology Co ltd; Institute of Forensic Science Ministry of Public Security PRC
Current assignee: Wuhan Ruibo Kechuang Biotechnology Co ltd; Institute of Forensic Science Ministry of Public Security PRC
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-01-18
Anticipated expiration: 2031-05-31

Abstract

The utility model belongs to the technical field of biological evidence obtaining equipment, and particularly relates to a cotton swab for obtaining evidence by a dry-wet two-step method. The handheld handle seat is connected with the extrusion handle seat, the outer sides of the handheld handle seat and the extrusion handle seat are both provided with connecting threaded openings, and the middle of each connecting threaded opening is connected with a pair of plastic connecting rods; the top end of the upper plastic connecting rod is connected with a dry cotton swab head, and the top end of the lower plastic connecting rod is connected with a wet cotton swab head; a liquid storage bag is embedded in the extrusion handle seat, and the liquid storage bag is matched with the extrusion groove on the surface of the extrusion handle seat to realize manual pressing; the liquid storage bag is connected with the wet cotton swab head through a conveying thin tube which is inserted in the plastic connecting rod; it is designed according to a dry-wet two-step method adopted in the field evidence obtaining process; the cotton swab head can meet the collection requirements of different biological samples, meanwhile, the cotton swab head is easy to bend and convenient to put into an extraction tube for extracting the samples, and in addition, a storage type extrusion liquid sac structure is adopted, so that the wetting degree of the cotton swab head can be effectively controlled; and the sampling is convenient.

Description

Cotton swab for dry-wet two-step evidence obtaining

Technical Field

The utility model belongs to the technical field of biological evidence obtaining equipment, and particularly relates to a cotton swab for obtaining evidence by a dry-wet two-step method.

Background

In the modern criminal investigation field, biological material evidence at a crime scene, such as blood spots, saliva spots, sperm spots and the like, needs to be collected frequently for DNA inspection. In the process of collecting the biological material evidence, the prior method is to dip a cotton swab with pure water and then use the cotton swab dipped with the pure water to extract various biological material evidences. Therefore, criminal investigation personnel must carry pure water with them for standby, and moreover, in order to prevent biological material evidence pollution, the container for containing pure water can only be used once, and cannot be used for multiple times, so that great inconvenience is brought to criminal investigation work.

SUMMERY OF THE UTILITY MODEL

Aiming at solving the problems of the defects and the shortcomings of the prior art; the utility model aims to provide a cotton swab for evidence collection by a dry-wet two-step method, which has the advantages of simple structure, reasonable design and convenient use and is designed according to the dry-wet two-step method adopted in the field evidence collection process; its collection demand that can satisfy different biological samples, simultaneously, the cotton head is bent easily and is conveniently put into the extraction tube and draw the sample, in addition, adopts the extrusion liquid bag structure of storage formula, the wet degree that can effectual control cotton swab head.

In order to achieve the purpose, the utility model adopts the technical scheme that: the device comprises a handheld handle base, an extrusion handle base, connecting threads, a plastic connecting rod, a dry-type cotton swab head, a wet-type cotton swab head, a breaking groove, an extrusion groove, a liquid storage bag, a conveying thin tube, a dry cotton swab isolation cover, a wet cotton swab isolation cover, a connecting screw and an anti-pressing cover cylinder; the handheld handle seat is connected with the extrusion handle seat, the outer sides of the handheld handle seat and the extrusion handle seat are both provided with connecting threaded openings, and the middle of each connecting threaded opening is connected with a pair of plastic connecting rods; the top end of the upper plastic connecting rod is connected with a dry cotton swab head, and the top end of the lower plastic connecting rod is connected with a wet cotton swab head; and a breaking-off cutting groove is arranged at the joint of the plastic connecting rod and the cotton swab head; a liquid storage bag is embedded in the extrusion handle seat, and the liquid storage bag is matched with the extrusion groove on the surface of the extrusion handle seat to realize manual pressing; the liquid storage bag is connected with the wet cotton swab head through a conveying thin tube which is inserted in the plastic connecting rod; the outer sides of the handheld handle seat and the extrusion handle seat are respectively connected with a dry cotton swab isolation cover and a wet cotton swab isolation cover through the matching of connecting threads and connecting screw ports; the port department of wet cotton swab cage be provided with the pressure cover section of thick bamboo of preventing of expansion, prevent pressing the cover section of thick bamboo and cup joint and cover the extrusion recess on extrusion handle seat surface.

Preferably, a cross-shaped notch leakage-proof film is arranged at the junction of the conveying thin tube and the fracture cutting groove.

Preferably, the volume of the liquid storage bag is 1-5 ml, and the liquid storage bag is filled with sterilized normal saline.

Preferably, the outer sides of the two ends of the hand-held handle seat and the extrusion handle seat are kept to be correspondingly long.

Preferably, the dry-type cotton swab head and the wet-type cotton swab head are flocked cotton swab heads.

After adopting the structure, the utility model has the beneficial effects that: it is designed according to a dry-wet two-step method adopted in the field evidence obtaining process; the cotton swab head can meet the collection requirements of different biological samples, meanwhile, the cotton swab head is easy to bend and convenient to put into an extraction tube for extracting the samples, and in addition, a storage type extrusion liquid sac structure is adopted, so that the wetting degree of the cotton swab head can be effectively controlled; and the sampling is convenient.

Drawings

To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention is described in detail by the following specific embodiments and the accompanying drawings.

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

FIG. 2 is a schematic view of the internal connections of the present invention;

FIG. 3 is a schematic diagram of the isolation state of the present invention;

FIG. 4 is a schematic view of the operation state of the present invention

Description of reference numerals: the cotton swab is characterized by comprising a handheld handle base 1, an extrusion handle base 2, a connecting thread 3, a plastic connecting rod 4, a dry-type cotton swab head 5, a wet-type cotton swab head 6, a breaking cutting groove 7, an extrusion groove 8, a liquid storage bag 9, a conveying thin pipe 10, a dry cotton swab isolation cover 11, a wet cotton swab isolation cover 12, a connecting screw port 13, a pressure-proof cover cylinder 14 and a cross-shaped notch leakage-proof film 15.

Detailed Description

In order that the objects, aspects and advantages of the utility model will become more apparent, the utility model will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.

Referring to fig. 1 to 4, the following technical solutions are adopted in the present embodiment: the device comprises a handheld handle base 1, an extrusion handle base 2, a connecting thread 3, a plastic connecting rod 4, a dry-type cotton swab head 5, a wet-type cotton swab head 6, a breaking groove 7, an extrusion groove 8, a liquid storage bag 9, a conveying thin tube 10, a dry cotton swab isolation cover 11, a wet cotton swab isolation cover 12, a connecting screw port 13 and a pressure-proof cover cylinder 14; the hand-held handle seat 1 is connected with the extrusion handle seat 2, the outer sides of the hand-held handle seat and the extrusion handle seat are both provided with a connecting threaded port 3, and the middle of the connecting threaded port 3 is connected with a pair of plastic connecting rods 4; the top end of the upper plastic connecting rod 4 is connected with a dry cotton swab head 5, and the top end of the lower plastic connecting rod 4 is connected with a wet cotton swab head 6; and the connection part of the plastic connecting rod 4 and the cotton swab head (the dry cotton swab head 5 and the wet cotton swab head 6) is provided with a breaking cutting groove 7; a liquid storage bag 9 is embedded in the extrusion handle base 2, and the liquid storage bag 9 is matched with an extrusion groove 8 on the surface of the extrusion handle base 2 to realize manual pressing; the liquid storage bag 9 is connected with the wet cotton swab head 6 through a conveying thin tube 10 which is inserted in the plastic connecting rod 4; the outer sides of the handheld handle base 1 and the extrusion handle base 2 are respectively connected with a dry cotton swab isolation cover 11 and a wet cotton swab isolation cover 12 through the matching of a connecting thread 3 and a connecting screw port 13; the port department of wet cotton swab cage 12 be provided with the pressure cover section of thick bamboo 14 of expanding, the pressure cover section of thick bamboo 14 cup joints and covers extrusion recess 8 on extrusion handle seat 2 surface.

Wherein, a cross-shaped notch leakage-proof film 15 is arranged at the junction of the conveying thin tube 10 and the fracture cutting groove 7; the volume of the liquid storage bag 9 is 1-5 ml, and the inside of the liquid storage bag is filled with sterilized normal saline; the outer sides of the two ends of the hand-held handle seat 1 and the extrusion handle seat 2 are kept to be correspondingly long; the dry-type cotton swab heads 5 and the wet-type cotton swab heads 6 are flocked cotton swab heads.

The working principle of the specific embodiment is as follows: when the biological sample is proved, the dry cotton swab isolation cover 11 is manually screwed, the dry cotton swab isolation cover 11 is separated from the handheld handle base 1, the dry cotton swab head 5 is exposed, and the handheld handle base 1 is operated to collect the biological sample through the dry cotton swab head 5; then the dry cotton swab isolation cover 11 is sleeved on the outer side of the dry cotton swab head 5 and is screwed and fixed; then the wet cotton swab isolation cover 12 is screwed to expose the wet cotton swab head 6, the extrusion groove 8 is pinched by fingers to extrude the liquid storage bag 9 inwards, and the sterilized normal saline in the liquid storage bag 9 props open the middle incision of the cross incision leakage-proof film 15 to wet the wet cotton swab head 6 for biological sampling; and the cross incision leakage-proof film 15 is automatically closed after being separated from the internal liquid pressure, the wet cotton swab isolation cover 12 is screwed after the wet sampling is completed, and the sampling information is pasted on the surface of the isolation cover.

In addition, can extrude the inside of wet cotton swab cage 12 with sterilization normal saline and dip in the use to can dissolve biological sample inside wet cotton swab cage 12, need seal the processing to connecting screw thread 3 and connecting screw 13 this moment.

After adopting the structure, the utility model has the beneficial effects that: it is designed according to a dry-wet two-step method adopted in the field evidence obtaining process; it can satisfy the collection demand of different biological samples, and in addition, the cotton head is bent easily and is conveniently put into the extraction tube and draw the sample.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The cotton swab for evidence collection by a dry-wet two-step method is characterized in that: the cotton swab device comprises a handheld handle base (1), an extrusion handle base (2), a connecting thread (3), a plastic connecting rod (4), a dry-type cotton swab head (5), a wet-type cotton swab head (6), a breaking groove (7), an extrusion groove (8), a liquid storage bag (9), a conveying thin tube (10), a dry cotton swab isolation cover (11), a wet cotton swab isolation cover (12), a connecting screw port (13) and a pressure-proof cover barrel (14); the hand-held handle seat (1) is connected with the extrusion handle seat (2), the outer sides of the hand-held handle seat and the extrusion handle seat are both provided with a connecting threaded hole (3), and the middle of the connecting threaded hole (3) is connected with a pair of plastic connecting rods (4); the top end of the upper plastic connecting rod (4) is connected with a dry cotton swab head (5), and the top end of the lower plastic connecting rod (4) is connected with a wet cotton swab head (6); and a breaking-off cutting groove (7) is arranged at the joint of the plastic connecting rod (4) and the cotton swab head; a liquid storage bag (9) is embedded in the extrusion handle seat (2), and the liquid storage bag (9) is matched with an extrusion groove (8) on the surface of the extrusion handle seat (2) to realize manual pressing; the liquid storage bag (9) is connected with the wet cotton swab head (6) through a conveying thin tube (10) inserted in the plastic connecting rod (4); the outer sides of the handheld handle seat (1) and the extrusion handle seat (2) are respectively connected with a dry cotton swab isolation cover (11) and a wet cotton swab isolation cover (12) through the matching of a connecting thread (3) and a connecting screw (13); the port department of wet cotton swab cage (12) be provided with the pressure cover section of thick bamboo (14) of preventing of expanding, prevent pressing cover section of thick bamboo (14) and cup joint and cover extrusion recess (8) in extrusion handle seat (2) surface.

2. The dry-wet two-step forensic cotton swab of claim 1 wherein: and a cross-shaped notch leakage-proof film (15) is arranged at the junction of the conveying thin tube (10) and the fracture cutting groove (7).

3. The dry-wet two-step forensic cotton swab of claim 1 wherein: the volume of the liquid storage bag (9) is 1-5 ml, and the interior of the liquid storage bag is filled with sterilized normal saline.

4. The dry-wet two-step forensic cotton swab of claim 1 wherein: the outer sides of the two ends of the hand-held handle seat (1) and the extrusion handle seat (2) keep corresponding lengths.

5. The dry-wet two-step forensic cotton swab of claim 1 wherein: the dry-type cotton swab heads (5) and the wet-type cotton swab heads (6) are flocked cotton swab heads.