Cotton swab for extracting biological material evidence

Abstract

The utility model discloses a biological material evidence extracting cotton swab which comprises a cotton swab body, a storage tube, a sealing piece and an extending cylinder, the cotton swab body comprises a swab rod and a cotton head, and the cotton head is arranged at the end of the swab rod; the cotton head is sleeved with the storage tube, a through hole is formed in one end of the storage tube, an opening is formed in the other end of the storage tube, a sealing plug is inserted into the opening, and the swab rod penetrates through the through hole; the sealing piece is arranged between the stick rod and the through hole and is used for sealing the gap; the extension cylinder is arranged at one end, corresponding to the through hole, of the storage tube; and a convex edge which is propped against the outer side of the stick rod is arranged on the extension cylinder. The cotton swab body is guided to move through the through hole in the storage tube, physical evidence extraction is performed when the cotton head of the cotton swab body extends out, the cotton head of the cotton swab head is stored when being stored in the storage tube, collision is not prone to occurring when the cotton head enters and exits, friction in the transportation process can be avoided when the cotton head is stored in the tube, and evidence obtaining and storage are facilitated in the whole operation process.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cotton swab technical field of taking evidence, specifically relates to a biological material evidence extraction cotton swab. BACKGROUND

[0002] In criminal investigation and forensic evidence, biological material evidence extraction cotton swab is a tool that is often used. The conventional operation is to dip biological samples by cotton swab. For example, Chinese patent 201821967823.1 discloses a field material evidence collection device and adhesive collection cotton swab, which comprises a pipe body and a plug body matched with the opening of one end of the pipe body, one end of the plug body in the pipe body is connected with a cotton swab, and the cotton swab comprises a cotton swab rod and a cotton head wrapped at one end of the cotton swab rod.

[0003] For the above prior art, there are still the following problems: after the cotton swab is used for evidence taking of biological samples, the biological material evidence extraction cotton swab generally needs to be put into a sterile bag for storage, and in the operation, the cotton swab is easy to rub against the opening of the sterile bag, and in transportation, the cotton swab is also easy to rub against the sterile bag, which is not convenient for the operation of the evidence taker and the complete preservation of the biological material evidence. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the above technical defects, and provides a biological material evidence extraction cotton swab, which solves the technical problem of inconvenient operation of the evidence taker and complete preservation of the biological material evidence in the prior art.

[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a biological material evidence extraction cotton swab, which comprises:

[0007] A cotton swab body comprises a swab rod and a cotton head, and the cotton head is arranged at the end of the swab rod;

[0008] A storage tube is sleeved on the cotton head, one end of the storage tube is provided with a through hole, the other end is provided with an open end, a sealing plug is inserted into the open end, and the swab rod penetrates through the through hole;

[0009] A sealing element is arranged between the swab rod and the through hole and is used for sealing the gap; and

[0010] An extension cylinder is arranged at one end of the storage tube corresponding to the through hole, the extension cylinder is provided with a convex edge abutting the outer side of the swab rod, and is used for breaking the swab rod.

[0011] In some embodiments, the sealing element comprises a sealing ring, which is arranged on the inner side of the through hole and is in close contact with the swab rod.

[0012] In some embodiments, the top end of the swab rod is provided with a limiting block.

[0013] In some embodiments, the top of the through hole extends outwardly with a slot, and the limiting block is inserted into the slot.

[0014] In some embodiments, the inner side of the extension cylinder is provided with an annular plate, the annular plate is sleeved on the outer side of the signing rod, and the sealing ring is also arranged in the annular plate.

[0015] In some embodiments, the two sides of the storage tube are provided with grooves, and the grooves are provided with anti-skid layers.

[0016] In some embodiments, the end of the signing rod is provided with a hollow skeleton inside the cotton head.

[0017] In some embodiments, the hollow skeleton has a through opening, and the hollow skeleton is provided with a liquid film bag.

[0018] In some embodiments, the inner top wall of the storage tube is provided with a protruding rod, the position of the protruding rod is opposite to the position of the through opening, and the protruding rod is used to break the liquid film bag from the through opening position when the signing rod body is moved upward.

[0019] In some embodiments, the end of the signing rod is provided with a hollow cavity, and the hollow cavity is in communication with the liquid film bag.

[0020] Compared with the prior art, the biological evidence extraction cotton swab provided by the utility model moves and guides the signing rod body through the through hole on the storage tube, extracts the evidence when the cotton head of the signing rod body is stretched out, saves the cotton head of the signing rod when the cotton head is retracted into the storage tube, and the collision during entry and exit is avoided, and the friction during transportation is also avoided. The whole operation process is convenient for evidence collection and saving. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structure schematic view of the biological evidence extraction cotton swab provided by the utility model embodiment;

[0022] Figure 2 is a structure perspective view of the biological evidence extraction cotton swab provided by the utility model embodiment;

[0023] Figure 3 is a three-dimensional explosion view of the signing rod body provided by the utility model embodiment;

[0024] Figure 4 is a use state view of the biological evidence extraction cotton swab provided by the utility model embodiment;

[0025] Figure 5 is a broken and saved state view of the biological evidence extraction cotton swab provided by the utility model embodiment.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1, swab body; 11, stick; 1101, hollow cavity; 12, cotton head; 13, limiting block; 14, hollow skeleton; 1401, through opening; 15, liquid film bag;

[0028] 2, storage tube; 201, through hole; 202, open; 203, sealing plug; 204, insertion slot; 205, groove; 206, convex rod;

[0029] 3, sealing element; 31, sealing ring;

[0030] 4, extension cylinder; 401, convex edge; 402, annular plate. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clearly understood, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0032] In order to solve the technical problems that it is inconvenient for the operator to operate and the biological material evidence is not completely preserved, the utility model provides a biological material evidence extraction swab, which can realize the effect of collision-free, friction-free, direct evidence collection and direct preservation.

[0033] Please refer to Figures 1-5 , Figure 1The utility model discloses a structure diagram of biological material evidence extraction cotton swab in one embodiment of the utility model, and biological material evidence extraction cotton swab includes cotton swab body 1, storage tube 2, sealing element 3 and extension cylinder 4, and cotton swab body 1 includes stick 11 and cotton head 12, the cotton head 12 sets up in the end of stick 11, and cotton swab body 1 is the main part of the evidence collection, and the cotton head 12 is used for dipping material evidence, storage tube 2 is sleeved on the cotton head 12, is used for providing the storage protection of cotton head 12, and prevents extrusion and friction, avoids the loss of material evidence content caused by extrusion and friction, one end of storage tube 2 is provided with through -hole 201, and the other end is provided with the open mouth 202, sealing plug 203 is inserted in the open mouth 202, is used for sealing this side's open mouth 202, stick 11 penetrates through the through -hole 201, is used for closing this side's through -hole 201, and the through -hole 201 is guided to the expansion of stick 11, avoids the collision and friction with the pipe orifice when being loaded into storage tube 2, makes it can be accurately loaded into storage tube 2, sealing element 3 is arranged between stick 11 and the through -hole 201, is used for sealing gap, improves the sealing effect, avoids external pollutants, extension cylinder 4 is arranged in one end of storage tube 2 corresponding the through -hole 201, the extension cylinder 4 is equipped with the flange 401 of abutting at the outside of stick 11, is used for the break of stick 11, makes the broken stick 11 remain part to be located above the through -hole 201, makes the through -hole 201 part still be in a stable insertion sealed state after the break of stick 11.

[0034] Wherein, the flange 401 is a part from the top of extension cylinder 4, is semicylindrical, and the top of the cylinder body is provided with a semicircular plate, and the semicircular plate is close to the position of the center of the circle, and a semicircular groove matched with stick 11 is formed.

[0035] In one embodiment, please refer to Figure 2 The sealing element 3 includes sealing ring 31, the sealing ring 31 is arranged on the inside of the through -hole 201, and is tightly attached to stick 11, provides friction resistance in the action of telescopic stick 11 through sealing ring 31, improves the stability of expansion, and seals the gap.

[0036] In one embodiment, please refer to Figure 1 And Figure 4 In order to limit the position of the push of stick 11, the top end of stick 11 is provided with limiting block 13, and the top of the through -hole 201 extends outwardly and has insertion slot 204, the limiting block 13 is inserted with the insertion slot 204, in use, push down stick 11, make limiting block 13 and insertion slot 204 insert, namely push to the limited position, can carry out subsequent material evidence extraction work.

[0037] It can be understood that when holding the cotton swab, the thumb and middle finger are respectively pinched on both sides of the storage tube 2, and the index finger is pressed on the top of the limiting block 13, so that stable pinching and evidence collection operation can be carried out.

[0038] Further, in order to improve the stability of the pinch, the storage tube 2 is provided with a groove 205 on both sides, and the anti-skid layer is arranged in the groove 205.

[0039] In one of the embodiments, referring to Figure 2 In order to improve the sealing performance, the inner side of the extension cylinder 4 is provided with an annular plate 402, the annular plate 402 is sleeved on the outer side of the signing rod 11, and the sealing ring 31 is also arranged in the annular plate 402, which cooperates with the sealing ring 31 in the through hole 201 to form double sealing of the end.

[0040] In one of the embodiments, referring to Figure 2 And Figure 3 In order to improve the support of the cotton head 12 part, the end of the signing rod 11 is provided with a hollow skeleton 14 located in the inside of the cotton head 12, which supports the cotton head 12 and makes the outer arc surface shape more stable.

[0041] Further, in order to meet the wet type evidence of the wet cotton swab, the hollow skeleton 14 has a through port 1401, and the liquid film bag 15 is arranged in the hollow skeleton 14, so that the liquid film bag 15 can be quickly broken to provide liquid to wet the cotton head 12.

[0042] Further, in order to perform the breaking action of the liquid film bag 15 without contact, the inner top wall of the storage tube 2 is provided with a convex rod 206, the position of the convex rod 206 is opposite to the position of the through port 1401, and the convex rod 206 is used to break the liquid film bag 15 from the through port 1401 position when the cotton swab body 1 is moved upward, in the operation, the signing rod 11 is pulled upward to drive the cotton head 12 to move upward, the convex rod 206 is extruded at the through port 1401, the extrusion force of the liquid film bag 15 is formed inward, and then the liquid film bag 15 is broken to make the liquid flow out to wet the cotton head 12.

[0043] Further, in order to provide sufficient amount of liquid, the end of the signing rod 11 is provided with a hollow cavity 1101, the hollow cavity 1101 is communicated with the liquid film bag 15, and the liquid is stored in the hollow cavity 1101 and the liquid film bag 15.

[0044] It can be understood that the inner top wall of the hollow cavity 1101 does not exceed the breaking position, so as to avoid the communication with the external air after breaking, and correspondingly, the breaking position of the signing rod 11 can be provided with a crease to facilitate the control of the breaking position.

[0045] In order to better understand the utility model, the following is combined with Figures 1 to 5The technical scheme of the utility model is explained in detail: in use, first pull off the sealing plug 203, then push the cotton swab body 1 to move downwards, make the whole cotton head 12 completely expose, and, the limiting block 13 is inserted with the slot 204, namely can carry out dry type evidence collection; if need to carry out wet type evidence collection, before pulling off the sealing plug 203, pull up the cotton swab body 1, make the convex rod 206 extrude the liquid film bag 15 and break, then according to the above steps, expose the cotton head 12, and after evidence collection, pull up the cotton swab body 1, make the cotton head 12 enter into the storage tube 2, and make the stick 11 be located at the broken position, break the stick 11 at the convex edge 401, namely can be convenient to store; in subsequent detection, can adopt the rod body that can pass through the through hole 201, extrude and push the stick 11, namely can push out the cotton head 12 from the storage tube 2 and fall into the detection test tube.

[0046] The above described specific embodiment of the utility model does not constitute the limitation to the protection scope of the utility model. Any various other corresponding changes and deformation according to the technical concept of the utility model should be contained in the protection scope of the utility model claim.

Claims

1. A biological evidence extraction swab, comprising: The application relates to a cotton swab, which comprises the following parts: a cotton swab body, a storage tube, a sealing member and an extension cylinder. The cotton swab body comprises a swab rod and a cotton head arranged at the end of the swab rod. The storage tube is sleeved on the cotton head, one end of the storage tube is provided with a through hole, the other end is provided with an open end, a sealing plug is inserted into the open end, and the swab rod penetrates through the through hole. The sealing member is arranged between the swab rod and the through hole and is used for sealing the gap. The extension cylinder is arranged at one end of the storage tube corresponding to the through hole, and a convex edge is arranged on the extension cylinder and abuts against the outer side of the swab rod, so as to break the swab rod.

2. The biological evidence extraction swab of claim 1, wherein, The sealing member comprises a sealing ring arranged on the inner side of the through hole and tightly abutting against the swab rod.

3. The biological evidence extraction swab of claim 2, wherein, The top end of the swab rod is provided with a limiting block.

4. The biological evidence extraction swab of claim 3, wherein, The top part of the through hole is outwardly extended with a slot, and the limiting block is inserted into the slot.

5. The biological evidence extraction swab of claim 4, wherein, The inner side of the extension cylinder is provided with an annular plate, the annular plate is sleeved on the outer side of the swab rod, and the sealing ring is also arranged in the annular plate.

6. The biological evidence extraction swab of claim 5, wherein, The two sides of the storage tube are provided with grooves, and the grooves are provided with anti-skid layers.

7. The biological evidence extraction swab of claim 6, wherein, The end of the swab rod is provided with a hollow skeleton arranged in the cotton head.

8. The biological evidence extraction swab of claim 7, wherein, The hollow skeleton is provided with a through hole, and a liquid film bag is arranged in the hollow skeleton.

9. The biological evidence extraction swab of claim 8, wherein, The inner top wall of the storage tube is provided with a convex rod, the position of the convex rod is opposite to the position of the through hole, and the convex rod is used for moving the cotton swab body upward and breaking the liquid film bag from the position of the through hole.

10. The biological evidence extraction swab of claim 9, wherein, The end of the swab rod is provided with a hollow cavity, and the hollow cavity is communicated with the liquid film bag.

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