Biological material evidence sticking and taking device

Abstract

The utility model discloses a biological material evidence sticking device which comprises a handle, a sticking head and a sleeve assembly. One end of the sticking head is connected with the handle, a flexible patch is stuck to the other end of the sticking head, and a flexible sheet body extends from the outer side of the flexible patch; the sleeve assembly comprises a sleeve body, a base plate, an elastic base, an outer sleeve and a pressing ring, the sleeve body is detachably arranged on the outer side of the sticking head in a sleeving mode, the bottom of the sleeve body is connected with the base plate through a connecting rod, the outer sleeve is movably arranged on the outer side of the sleeve body in a sleeving mode, and the elastic base is connected to the base plate and abuts against one face of the flexible sheet body. According to the utility model, through the cooperation of the sticking head and the sleeve assembly, the flexible patch can be directly torn off when the sticking head and the sleeve assembly are separated only by rotating the outer cylinder and pressing the flexible patch body onto the elastic base through the pressing ring, and a protective patch on an adhesive layer of the sticking device does not need to be torn off by using extra tweezers, so that the operation is simplified.

Description

Technical Field

[0001] This utility model relates to the field of criminal evidence extraction technology, specifically to a biological evidence adhesive. Background Technology

[0002] Biological evidence collection is a method used in forensic science to collect biological samples (such as blood, semen, skin cells, etc.) left at crime scenes. An adhesive collector is a tool made of special adhesive materials that allows for the simple and rapid extraction of suspicious microorganisms from criminal scenes. For example, the biological evidence collector disclosed in Chinese Patent 201620764048.4 includes: a handle; a buffer layer at one end of the handle, an adhesive layer at the other end of the buffer layer, and a cap; the cap is placed on the end of the handle with the buffer layer, and the adhesive layer is circular and consists of two symmetrically arranged D-shaped sterile neutral adhesive tapes.

[0003] The existing technology has the following problems: In order to prevent debris from adhering to the adhesive layer of the adhesive device when it is not in use, a protective patch is attached to it. Therefore, in the actual operation of the adhesive device, it is necessary to unscrew the cap first, and then use tweezers to peel off the protective patch before the evidence can be picked up. In addition, it is necessary to avoid contact with tweezers or other unrelated objects in the process, which is not convenient. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a biological evidence adhesive device that solves the technical problem that the protective patch on the adhesive layer of the adhesive device needs to be removed by tweezers.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a biological evidence adhesive, comprising:

[0007] handle;

[0008] An adhesive head, one end of which is connected to the handle, and the other end to which a flexible patch is attached, the outer side of which extends a flexible sheet; and

[0009] A sleeve assembly includes a cylinder, a base, an elastic base, an outer cylinder, and a pressure ring. The cylinder is detachably sleeved on the outside of the adhesive head. The bottom of the cylinder is connected to the base via a connecting rod. The outer cylinder is movably sleeved on the outside of the cylinder. The elastic base is connected to the base and abuts against one side of the flexible sheet. The pressure ring is disposed on the inside of the outer cylinder and has a first position state that abuts against the other side of the flexible sheet and compresses the elastic base, and a second position state that moves away from the flexible sheet.

[0010] In some embodiments, the elastic base includes an elastic layer and a pressure plate, the elastic layer being connected to the top of the chassis, the pressure plate being connected to the top of the elastic layer, and the pressure plate abutting against the bottom of the flexible sheet.

[0011] In some embodiments, a guide groove is provided on the outer side of the pressure plate, and the guide groove is slidably connected to the connecting rod.

[0012] In some embodiments, a sealing ring is provided on the outer side of the chassis.

[0013] In some embodiments, the number of adhesive heads and sleeve assemblies are both two, and they are installed one-to-one at both ends of the handle.

[0014] In some embodiments, the end of the handle is provided with a threaded groove, and the end of the adhesive head connected to the handle is provided with a threaded rod. The adhesive head and the handle are detachably connected by the threaded rod and the threaded groove.

[0015] In some embodiments, the adhesive head includes a base and an adhesive layer, one end of the base being connected to the threaded rod and the other end being connected to the adhesive layer.

[0016] In some embodiments, the cylindrical body is threaded onto the outside of the base.

[0017] In some embodiments, the outer side of the handle is provided with an anti-slip layer.

[0018] In some embodiments, both the cylindrical body and the outer cylinder are transparent cylinders.

[0019] Compared with the prior art, the biological evidence adhesive provided by this utility model, through the cooperation of the adhesive head and the sleeve assembly, only requires rotating the outer cylinder to press the flexible sheet onto the elastic base with the pressure ring. When separating the adhesive head and the sleeve assembly, the flexible patch can be directly peeled off without the need to use tweezers to peel off the protective patch on the adhesive layer of the adhesive device, simplifying the operation and improving the convenience of use. Attached Figure Description

[0020] Figure 1 This is a three-dimensional diagram of the biological evidence adhesive provided in this embodiment of the utility model;

[0021] Figure 2 This is a three-dimensional exploded view of the biological evidence adhesive provided in this embodiment of the utility model;

[0022] Figure 3 This is a front sectional view of the biological evidence adhesive provided in this embodiment of the utility model;

[0023] Figure 4This is a diagram showing the position of the pressure ring of the biological evidence adhesive provided in this embodiment pressed against the flexible sheet.

[0024] Figure 5 This is a diagram showing the position of the compression elastic base of the biological evidence adhesive provided in this embodiment of the invention;

[0025] Figure 6 This is a schematic diagram of the dual-head adhesive head of the biological evidence adhesive device provided in this embodiment of the utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Handle; 101. Threaded groove;

[0028] 2. Adhesive head; 21. Base; 22. Adhesive layer; 201. Flexible patch; 202. Flexible sheet body; 203. Threaded rod;

[0029] 3. Sleeve assembly; 31. Cylinder body; 32. Chassis; 33. Elastic base; 331. Elastic layer; 332. Pressure plate; 333. Guide groove; 34. Outer cylinder; 35. Pressure ring; 301. Connecting rod. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] To address the technical problem that the protective patch on the adhesive layer of the adhesive device needs to be removed using tweezers, this invention provides a biological evidence adhesive device that allows for the non-contact removal of the protective patch without the need for tweezers.

[0032] Please see Figure 1 and Figure 2 , Figure 2This is a three-dimensional exploded view of a biological evidence adhesive device according to an embodiment of the present invention. The biological evidence adhesive device includes a handle 1, an adhesive head 2, and a sleeve assembly 3. One end of the adhesive head 2 is connected to the handle 1, and the other end is attached with a flexible patch 201. A flexible sheet 202 extends from the outer side of the flexible patch 201. The flexible sheet 202 and the flexible patch 201 form a single protective patch. The flexible sheet 202 is a semi-circular sheet extending from the flexible sheet 201. When inserted into the sleeve assembly 3, it can be squeezed and bent past the cylinder 31 and flattened between the pressure ring 35 and the elastic base 33. The sleeve assembly 3 includes a cylinder 31, a base 32, an elastic base 33, an outer cylinder 34, and a pressure ring 35. The sleeve assembly 3 is used to fit over the outside of the adhesive head 2 for sealing and protection. The cylinder 31 is detachably fitted over the outside of the adhesive head 2. The bottom of the cylinder 31 is connected to the chassis 32 via two connecting rods 301. The outer cylinder 34 is movably sleeved on the outside of the cylinder 31 and on the outside of the chassis 32 to form a seal. The elastic base 33 is connected to the chassis 32 and abuts against the bottom of the flexible sheet 202. Under the push of the downward pressure, the elastic base 33 can be elastically compressed, causing the top surface to move downward. The pressure ring 35 is disposed on the inner side of the outer cylinder 34 and has a first position state of abutting against the upper surface of the flexible sheet and compressing the elastic base, and a second position state of moving away from the flexible sheet. When the outer cylinder 34 is rotated downward, the pressure ring 35 is moved downward, which can clamp the flexible sheet 202 onto the elastic base 33. With the continued downward rotation, the elastic base 33 can be compressed, and the flexible sheet 202 and the flexible patch 201 can be moved further downward together.

[0033] Please refer to the following for usage: Figure 3 , Figure 4 and Figure 5 First, rotate the outer cylinder 34 to move it downward relative to the cylinder 31, move the pressure ring 35 downward, clamp the flexible sheet 202 onto the elastic base 33, and continue to rotate downward to compress the elastic base 33. Move the flexible sheet 202 and the flexible patch 201 further downward together and separate them from the bottom of the adhesive head 2. Then separate the sleeve assembly 3 from the adhesive head 2. You can then use an adhesive head 2 with the protective patch already removed to pick up evidence. There is no need to use tweezers to remove the protective patch. This achieves the effect of removing the protective patch before use without contact, improving the convenience of use.

[0034] In one embodiment, please refer to Figure 2In order to clamp and lower the patch with the pressure ring 35, the elastic base 33 includes an elastic layer 331 and a pressure plate 332. The elastic layer 331 is connected to the top of the base 32, and the pressure plate 332 is connected to the top of the elastic layer 331. The pressure plate 332 abuts against the bottom of the flexible sheet 202. When the pressure ring 35 is pressed down, the flexible sheet 202 can be pressed against the top of the pressure plate 332 and clamped.

[0035] Understandably, the elastic layer 331 can be made of elastic materials such as springs, rubber pads or silicone pads that can be compressed during pressing, and is placed on the bottom of the pressure plate 332; the top of the pressure plate 332 can be provided with an anti-slip layer to prevent the clamping of the patch from slipping when the pressure ring 35 presses down and compresses the elastic layer 331.

[0036] In one embodiment, please refer to Figure 3 In order to guide the pressure plate 332 during its up-and-down movement, a guide groove 333 is provided on the outer side of the pressure plate 332. The guide groove 333 is slidably connected to the connecting rod 301. The downward movement of the pressure plate 332 is guided by the relative sliding between the guide groove 333 and the connecting rod 301, thereby improving stability.

[0037] Furthermore, in order to provide a seal during the up-and-down movement of the outer cylinder 34, a sealing ring is provided on the outer side of the chassis 32 and abuts against the inner wall of the outer cylinder 34.

[0038] In one embodiment, please refer to Figure 6 The number of adhesive heads 2 and sleeve assemblies 3 are both two, and they are installed one-to-one at both ends of the handle 1. That is, one adhesive device can perform two evidence adhesives, and the two adhesive heads 2 can be set as a soft base adhesive head and a hard base adhesive head respectively, or they can be two adhesive heads of the same specification to achieve multiple or multi-purpose effects.

[0039] Furthermore, in order to separate the evidence after it has been collected, the end of the handle 1 is provided with a threaded groove 101, and the end of the adhesive head 2 connected to the handle 1 is provided with a threaded rod 203. By connecting the threaded rod 203 to the threaded groove 101, the adhesive head 2 can be detachably connected to the handle 1, so that the adhesive head 2 and the sleeve assembly 3 fitted on it can be separated from the handle 1. Then, the other end of the adhesive head 2 can be used alone, and the removed adhesive head 2 can be stored separately.

[0040] The adhesive head 2 includes a base 21 and an adhesive layer 22. One end of the base 21 is connected to the threaded rod, and the other end is connected to the adhesive layer 22. The adhesive layer 22 can be peeled off during subsequent identification.

[0041] In addition, the cylinder 31 is threaded to the outside of the base 21, which facilitates installation and disassembly.

[0042] Furthermore, the outer side of the handle 1 is provided with an anti-slip layer for easy gripping and use.

[0043] Furthermore, both the cylindrical body 31 and the outer cylinder 34 are transparent cylinders, making it easy to observe the condition of the adhesive head 2.

[0044] To better understand this utility model, the following is combined with... Figures 1 to 6 The technical solution of this utility model is described in detail below: In use, it is only necessary to rotate the outer cylinder 34 so that it moves downward relative to the cylinder 31, forming the downward movement of the pressure ring 35, which clamps the flexible sheet 202 onto the elastic base 33, and continues to rotate downward to compress the elastic base 33, further moving the flexible sheet 202 and the flexible patch 201 downward together and separating them from the bottom end of the adhesive head 2. Then, the sleeve assembly 3 is separated from the adhesive head 2, and an adhesive head 2 with the protective patch already torn off can be used to pick up the evidence. After picking up the evidence, the sleeve assembly 3 can be put back on. The protective patch is clamped and moved downward, and will not come into contact with the adhesive head 2. Moreover, the protective patch is directly clamped inside the sleeve assembly 3, and there is no need to consider the problem of discarding it after tearing it off.

[0045] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A biological evidence collection device, characterized in that, include: handle; An adhesive head, one end of which is connected to the handle, and the other end to which a flexible patch is attached, the outer side of which extends a flexible sheet; and A sleeve assembly includes a cylinder, a base, an elastic base, an outer cylinder, and a pressure ring. The cylinder is detachably sleeved on the outside of the adhesive head. The bottom of the cylinder is connected to the base via a connecting rod. The outer cylinder is movably sleeved on the outside of the cylinder. The elastic base is connected to the base and abuts against one side of the flexible sheet. The pressure ring is disposed on the inside of the outer cylinder and has a first position state that abuts against the other side of the flexible sheet and compresses the elastic base, and a second position state that moves away from the flexible sheet.

2. The biological evidence collector according to claim 1, characterized in that, The elastic base includes an elastic layer and a pressure plate. The elastic layer is connected to the top of the chassis, and the pressure plate is connected to the top of the elastic layer, and the pressure plate abuts against the bottom of the flexible sheet.

3. The biological evidence collector according to claim 2, characterized in that, The outer side of the pressure plate is provided with a guide groove, and the guide groove is slidably connected to the connecting rod.

4. The biological evidence collector according to claim 3, characterized in that, A sealing ring is provided on the outer side of the chassis.

5. The biological evidence adhesive according to claim 4, characterized in that, The adhesive head and sleeve assembly are each in pairs, and are installed one-to-one at both ends of the handle.

6. The biological evidence adhesive according to claim 5, characterized in that, The end of the handle is provided with a threaded groove, and the end of the adhesive head connected to the handle is provided with a threaded rod. The adhesive head and the handle are detachably connected by the threaded rod and the threaded groove.

7. The biological evidence collector according to claim 6, characterized in that, The adhesive head includes a base and an adhesive layer. One end of the base is connected to the threaded rod, and the other end is connected to the adhesive layer.

8. The biological evidence adhesive according to claim 7, characterized in that, The cylinder is threaded to the outside of the base.

9. The biological evidence adhesive according to claim 8, characterized in that, The outer side of the handle is provided with an anti-slip layer.

10. The biological evidence adhesive according to claim 9, characterized in that, Both the main cylinder and the outer cylinder are transparent.

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