CN207047209U - A kind of biological material is viscous to take device - Google Patents

Abstract

The utility model relates to a biological inspection material sticking device, which is characterized in that it includes a handle, a connecting rod and an extracting part, one end of the handle has an extension section extending outward, and the end of the extension section is detachably The connecting rod is connected, the extraction part is arranged at the end of the connecting rod, and viscous colloid is arranged around the extraction part, and the viscous colloid is wrapped with a protective film. The extraction part of the utility model has three shapes of shovel shape, pointed circle and plane circle, which can adapt to different types of surfaces of various structures of physical evidence carriers at the scene of the case, and realize the effective extraction of trace test materials such as exfoliated cells.

Description

A device for sticking biological samples

technical field

The utility model relates to a sticking device capable of extracting trace test materials such as exfoliated biological cells, which belongs to the field of biological sample collection.

Background technique

At present, the effective extraction of contact biological evidence at the scene of the case is the key point of criminal investigation and case solving. Since the amount of such biological evidence is extremely small and belongs to trace biological inspection materials, it is particularly important to improve the efficiency of on-site evidence extraction. Existing biological evidence extraction devices can meet the extraction requirements of most cases on-site inspection materials, but due to material or structural reasons, these devices are not suitable for irregular carrier surfaces with special-shaped structures, rough surfaces or uneven surfaces (such as clothing, curved surfaces, etc.) , gaps, small holes, etc.) the extraction efficiency of trace biological samples is not high, which affects the next step of DNA testing.

Contents of the invention

In view of the above problems, the purpose of this utility model is to provide a biological inspection material sticking device, which is suitable for the various structures and different types of surfaces of the physical evidence carrier at the scene of the case, and realizes the effective extraction of trace samples such as exfoliated cells.

In order to achieve the above purpose, the utility model adopts the following technical solutions: a device for sticking biological specimens, characterized in that it includes a handle, a connecting rod and an extraction part, and one end of the handle has an extension section extending outwards. The end of the extension section is detachably connected to the connecting rod, the extraction part is set at the end of the connecting rod, and viscous colloid is arranged around the extraction part, and the viscous colloid is wrapped with a protective film .

The extracting part is in the shape of a flat shovel or a pointed circle.

The extracting part is flat and circular, and the extracting part is arranged on the bottom surface of the end of the connecting rod.

The connecting rod and the extraction part are integrally formed by plastic material.

A notch is provided on the side wall of one end of the connecting rod close to the extracting part.

The extraction part is arranged on the bottom surface of the end of the extension section through a buffer layer made of flexible material.

The handle is a cylindrical structure, and a plurality of elliptical pits are evenly distributed on the outer periphery of the handle, and the extension section of the handle is a topless cone structure, and the inside of the extension section is hollow.

It also includes a cylindrical transparent sleeve, one end of which is closed, and the sleeve is detachably sleeved outside the beginning of the extension.

An annular boss is provided on the inner wall of one end of the casing sleeved outside the beginning end of the extension section.

A prompt label is provided at the tear of the protective film.

Due to the adoption of the above technical scheme, the utility model has the following advantages: 1. A plurality of elliptical pits are evenly distributed on the outer periphery of the handle of the utility model, so that the handle meets the ergonomic structure, which is convenient for fingers to hold firmly, and realizes the inspection of the surface of the physical evidence carrier. Scratching and sticking of tightly attached trace samples (exfoliated cells) can effectively improve the collection rate. 2. The extraction part of the utility model has three shapes: shovel shape, pointed circle and flat circle, which can adapt to different types of surfaces of various structures of physical evidence carriers at the scene of the case, and realize the effective extraction of trace samples such as exfoliated cells. 3. The connecting rod and the extracting part of the utility model are integrally formed of plastic materials, and the connecting rod is detachably arranged at the end of the extension section. The extracting part can be directly pulled out together with the connecting rod, or can be folded and extracted with tweezers or scissors to facilitate subsequent DNA testing operations.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure in which the extraction end of the utility model is shovel-shaped;

Fig. 2 is a schematic diagram of the overall structure of the extraction part of the utility model in a pointed circular shape;

Fig. 3 is a schematic diagram of the overall structure of the extraction part of the utility model in a plane and circular shape;

Fig. 4 is a schematic diagram of another overall structure in which the extracting part of the utility model is flat and circular;

Fig. 5 is a schematic diagram of the top structure of the handle of the present invention.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

As shown in Fig. 1 and Fig. 2, the utility model provides a biological sample material sticking device, which includes a handle 1, a connecting rod 2 and an extracting part 3, and one end of the handle 1 has an extension section 11 extending outwards. The end of the extension section 11 is detachably connected to the connecting rod 2, an extraction part 3 is set at the end of the connecting rod 2, and a viscous colloid (not shown) is arranged around the extraction part 3, and the viscous colloid is wrapped with a protective film .

In the above embodiment, the extraction part 3 is in the shape of a flat shovel, which can not only collect the regular plane of the physical evidence carrier, but also can effectively collect the curved surface, bent surface and gap-shaped parts; the connecting rod 2 can ensure that the extraction end 3 can Access to deeper parts that cannot be reached by hand for collection.

In the above-mentioned embodiment, the extraction part 3 is pointed and round, which can not only collect the regular surface of the physical evidence carrier, but also effectively collect the pits and small holes on the rough surface.

In the above embodiment, as shown in FIG. 3 , the extraction part 3 is flat and circular, and the extraction part 3 is arranged on the bottom surface of the end of the connecting rod 2, which can effectively extract the trace material on the plane physical evidence carrier, such as the surface of the textile carrier.

In the above-mentioned embodiment, the connecting rod 2 and the extracting part 3 can be integrally formed with plastic materials, so that after the extraction of the micro sample material is completed by using the sticking device, the whole sticking device is sent to the DNA laboratory, and the DNA test and extraction are carried out in the laboratory. , only the connecting rod 2 and the extraction part 3 can be inspected as a whole, or the extraction part 3 can be cut off with scissors for inspection.

In the above-mentioned embodiment, as shown in FIG. 4 , the extraction part 3 is arranged on the end bottom surface of the extension section 11 through a buffer layer 5 of a flexible material. The extraction of trace test materials also plays a buffer role on the surface of the evidence carrier to prevent damage to the surface of the evidence carrier.

In the above embodiments, a prompt label is provided at the tear of the protective film to provide convenience for the collectors to operate.

In the above embodiment, a dent is provided on the side wall of the connecting rod 2 close to the extraction part 3, and after the extraction of the micro sample material is completed using the sticking device, the whole sticking device is sent to the DNA laboratory, and the DNA extraction is carried out in the laboratory. When checking and extracting, the connecting rod 2 can be broken by force from the dent, and only the broken part of the connecting rod 2 together with the extracting part 3 can be inspected.

In the above-mentioned embodiment, as shown in Figures 1 to 5, the handle 1 is a cylindrical structure, and a plurality of oval-shaped pits 12 are evenly distributed on the outer periphery of the handle 1, so that the handle 1 meets the ergonomic structure and is convenient for fingers to hold firmly. Realize the scraping and sticking of trace material (exfoliated cells) that is tightly attached to the surface of the physical evidence carrier; the extension section 11 of the handle 1 is a topless cone structure, and the inside of the extension section 11 is hollow, making the whole sticking device light and portable ; When the trace material is located deep in the narrow area, the extension section 11 can be used as a compensation rod for the connecting rod 3 to realize the effective extraction of the trace material by the sticking device.

In the above embodiment, the sticking device also includes a cylindrical transparent sleeve 4, one end of which is closed, and the sleeve 4 is detachably set outside the beginning of the extension section 11, so that the extraction part 3 is suspended from the sleeve 4 In order to prevent the pollution and damage of the collected micro-test materials.

In the above-mentioned embodiment, the sleeve 4 is set on the inner wall of one end outside the beginning of the extension section 11. There is an annular boss, which can ensure the tight connection between the sleeve 4 and the extension section 11. The sleeve 4 is not easy to fall off, effectively preventing the collection of Contamination and destruction of trace sample materials.

The use process of the utility model is as follows: when in use, pull out the casing 4, tear off the protective film on the surface of the extraction end 3 with clean tweezers, and the collector holds the handle 1 so that the extraction end 3 is aligned with the surface of the physical evidence carrier to perform trace material inspection (Exfoliated cells) collection, according to the actual situation, the same sticking device can be used to repeatedly stick the same part until the viscous colloid on the extraction end 3 loses its viscosity, so as to ensure enough extracted exfoliated cells; multiple sticking devices can also be used Separately extract multiple parts to ensure that exfoliated cells from a single source are extracted; if the trace sample material is tightly attached, the extraction end 3 can be repeatedly scraped and adhered to the collection site; after the collection is completed, use the sleeve 4 to reset Outside the beginning of the extension section 11, the extraction part 3 is suspended in the inside of the casing 4 to prevent the contamination and damage of the trace sample material collected on the extraction part 3; Send it to a DNA laboratory for testing.

The utility model is only described with the above-mentioned embodiment, and the structure, setting position and connection of each component can be changed to some extent. On the basis of the technical solution of the utility model, any improvement or equivalent transformation of individual components according to the principles of the utility model shall not be excluded from the protection scope of the utility model.

Claims (10)

1. A biological sample material sticking device, characterized in that: it includes a handle, a connecting rod and an extraction part, one end of the handle has an extension section extending outward, and the end of the extension section is detachably connected to the The connecting rod, the extraction part is provided at the end of the connecting rod, and viscous colloid is arranged around the extraction part, and the viscous colloid is wrapped with a protective film. 2 . The biological sample sticking device according to claim 1 , wherein the extracting part is in the shape of a flat shovel or pointed circle. 3 . 3 . The device for sticking biological samples according to claim 1 , wherein the extracting part is flat and circular, and the extracting part is arranged on the bottom surface of the end of the connecting rod. 4 . 4. A device for sticking biological specimens according to claim 1, 2 or 3, characterized in that: the connecting rod and the extracting part are integrally formed of plastic materials. 5 . The device for sticking biological specimens according to claim 4 , wherein a dent is provided on the side wall of the end of the connecting rod close to the extracting part. 6 . 6 . The biological sample material sticking device according to claim 3 , wherein the extraction part is arranged on the bottom surface of the end of the extension section through a buffer layer made of a flexible material. 6 . 7. A device for sticking biological samples according to claim 1, characterized in that: the handle is a cylindrical structure, and a plurality of elliptical pits are evenly distributed on the outer periphery of the handle, and all the handles are The extension section is a topless cone structure, and the inside of the extension section is hollow. 8. A biological specimen sticking device according to claim 1, characterized in that it also comprises a cylindrical transparent sleeve, one end of which is closed, and the sleeve is detachably sleeved on the outside of the beginning of the extension. 9 . The device for sticking biological specimens according to claim 8 , wherein an annular boss is provided on the inner wall of one end of the sleeve sleeved outside the beginning end of the extension section. 10 . 10 . The device for sticking biological samples according to claim 1 , wherein a prompt label is provided at the tear of the protective film. 11 .