Sample punching tool

Abstract

The utility model relates to the technical field of judicial expertise, and discloses a sample punching tool which comprises a cylindrical outer tube, a limiting ring is fixedly connected to the outer wall of the cylindrical outer tube, a punching assembly is arranged inside the cylindrical outer tube, a counting assembly is arranged outside the cylindrical outer tube, the counting assembly comprises a circular ring, and the circular ring is arranged on the outer wall of the cylindrical outer tube. The cylindrical outer pipe is inserted into the inner wall of the circular ring, a supporting column is fixedly connected to the bottom surface of the circular ring, a base is fixedly connected to the bottom end of the supporting column, a counter is fixedly installed on the surface of the base, a groove is formed in the surface of the base, and a base plate is slidably connected to the inner wall of the groove. According to the utility model, the punching tool bit rotates and moves downwards to cut a blood card or a saliva card and generate pressure on the base plate, so that the base plate moves downwards to trigger the counting button of the counter, and the number of times is displayed through the display screen of the counter, thereby avoiding memory confusion of workers when the sample size is large.

Description

Technical Field

[0001] The utility model relates to the technical field of judicial identification, in particular to a sample punching tool. Background Art

[0002] In forensic evidence testing, direct DNA amplification tests are often performed on blood or saliva samples. During the test, samples are collected on blood or saliva cards with scissors or punching tools, and then the samples are placed in direct amplification reagents for amplification testing. Manual punch pens are commonly used to perform punching samples on a large number of blood cards.

[0003] However, during use, especially when punching a large number of holes, sometimes samples are missed after punching, causing two samples to overlap and enter one amplification reagent tube, which will cause erroneous results. The reason is that the manual punching tool does not have an automatic counting function, and the staff sometimes get confused when the sample volume is large. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a sample punching tool, which aims to improve the problem that the manual punching tool in the prior art has no automatic counting function and the staff sometimes have memory confusion when the sample volume is large.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sample punching tool, comprising a cylindrical outer tube, a limiting ring is fixedly connected to the outer wall of the cylindrical outer tube, a punching assembly is arranged inside the cylindrical outer tube, a counting assembly is arranged outside the cylindrical outer tube, the counting assembly comprises a circular ring, the cylindrical outer tube is inserted into the inner wall of the circular ring, a supporting column is fixedly connected to the bottom surface of the circular ring, a base is fixedly connected to the bottom end of the supporting column, a counter is fixedly installed on the surface of the base, a groove is opened on the surface of the base, and a pad is slidably connected to the inner wall of the groove.

[0006] As a further description of the above technical solution:

[0007] A punching assembly is arranged inside the cylindrical outer tube, and the punching assembly includes a threaded sleeve, which is inserted into the bottom end of the cylindrical outer tube, a threaded rod is threadedly connected to the surface of the threaded sleeve, and a collar is fixedly connected to the outer wall of the threaded rod.

[0008] As a further description of the above technical solution:

[0009] A punching cutter head is fixedly connected to the bottom surface of the threaded sleeve, and a storage groove is provided at the bottom end of the punching cutter head.

[0010] As a further description of the above technical solution:

[0011] A spiral groove is provided on the inner wall of the cylindrical outer tube, a slider is slidably connected to the inner wall of the spiral groove, and the slider is fixedly connected to the side wall of the collar.

[0012] As a further description of the above technical solution:

[0013] The threaded rod penetrates and is rotatably connected to the top end of the cylindrical outer tube, and a pressing block is fixedly connected to the top end of the threaded rod.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the cylindrical outer tube is fixedly connected with a support ring, and the sleeve ring is elastically connected to the support ring via a return spring.

[0016] As a further description of the above technical solution:

[0017] A rotating wheel is fixedly connected to the outer wall of the threaded sleeve, and a plurality of groups of anti-slip teeth distributed in an array are arranged on the outer wall of the rotating wheel.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, the punching cutter head rotates downward to cut the blood card or saliva card, which generates pressure on the pad, causing the pad to move downward, triggering the counting button of the counter, so that the number of times is displayed on the display screen of the counter, avoiding memory confusion of the staff when the sample volume is large.

[0020] 2. In the utility model, the spiral groove and the slider cooperate with each other, so that the threaded rod drives the ring to move downward, the slider rotates under the influence of the spiral groove, and the punching cutter head rotates and moves downward, thereby improving the cutting effect of the blood card or saliva card. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a sample punching tool proposed by the utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of a cylindrical outer tube of a sample punching tool proposed by the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of a punching assembly of a sample punching tool proposed by the utility model;

[0024] Figure 4 This is a schematic diagram of the disassembled structure of a counting component of a sample punching tool proposed by the utility model.

[0025] Legend:

[0026] 1. Cylindrical outer tube; 2. Limiting ring; 3. Support ring; 4. Punching assembly; 41. Threaded sleeve; 411. Rotating wheel; 42. Punching cutter head; 43. Threaded rod; 431. Pressing block; 44. Ring; 45. Return spring; 46. Spiral groove; 47. Sliding block; 5. Counting assembly; 51. Ring; 52. Support column; 53. Base; 54. Counter; 55. Groove; 56. Pad. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a sample punching tool, comprising a cylindrical outer tube 1, a limiting ring 2 is fixedly connected to the outer wall of the cylindrical outer tube 1, and the limiting ring 2 forms a raised edge on the outer wall of the cylindrical outer tube 1, thereby increasing the width of the cylindrical outer tube 1. A supporting ring 3 is fixedly connected to the inner wall of the cylindrical outer tube 1, and a punching assembly 4 is arranged inside the cylindrical outer tube 1, and the punching assembly 4 is used to punch a blood card or a saliva card.

[0029] Reference Figure 1 - Figure 3 The punching assembly 4 includes a threaded sleeve 41, which is inserted into the bottom end of the cylindrical outer tube 1. A threaded hole is arranged inside the threaded sleeve 41. A rotating wheel 411 is fixedly connected to the outer wall of the threaded sleeve 41. A plurality of groups of anti-skid teeth distributed in an array are arranged on the outer wall of the rotating wheel 411. A punching cutter head 42 is fixedly connected to the bottom surface of the threaded sleeve 41. The anti-skid teeth increase the friction between the rotating wheel 411 and the hand, so that it is convenient to rotate the rotating wheel 411 to rotate the threaded sleeve 41, so that the threaded sleeve 41 is threadedly connected to the threaded rod 43, and the bottom end of the punching cutter head 42 A storage groove is provided, and a threaded rod 43 is threadedly connected to the surface of the threaded sleeve 41, and the threaded rod 43 penetrates and is rotatably connected to the top end of the cylindrical outer tube 1, and a pressure block 431 is fixedly connected to the top end of the threaded rod 43. The threaded rod 43 moves downward by pressing the pressure block 431, and the threaded sleeve 41 drives the punching head 42 to move downward, fit with the surface of the blood card or saliva card, and cut the blood card or saliva card under pressure, and the bottom end of the punching head 42 is hollow through the storage groove, so that the cut blood card or saliva card sample can enter it for storage.

[0030] The end of the threaded rod 43 is fixedly connected with a pin. When the pin is in effect, the threaded rod 43 is moved downward by pressing the pressing block 431, and the return spring 45 is compressed. The threaded rod 43 moves downward. At this time, the threaded sleeve 41 is in an extended state, and the threaded sleeve 41 is rotated so that the pin at the end of the threaded rod 43 is pushed into the inside of the punching cutter head 42, and the blood card or saliva card stored in the punching cutter head 42 is ejected from the punching cutter head 42 to complete the release function. A collar 44 is fixedly connected to the outer wall of the threaded rod 43. The collar 44 is elastically connected to the support ring 3 through the return spring 45. The support ring 3 is used to support the return spring 45. When the collar 44 is driven by the threaded rod 43 to move downward, the return spring 45 is compressed. When the pressure on the pressing block 431 disappears, the return spring 45 rebounds the collar 44, so that the punching cutter head 42 returns to its original position. A spiral groove 46 is provided on the inner wall of the cylindrical outer tube 1, and a slider 47 is slidably connected to the inner wall of the spiral groove 46. The slider 47 is fixedly connected to the side wall of the collar 44. The spiral groove 46 and the slider 47 cooperate with each other, so that the threaded rod 43 drives the collar 44 to move downward, and the slider 47 rotates under the influence of the spiral groove 46, and the punching head 42 rotates and moves downward, thereby improving the cutting effect of the blood card or saliva card.

[0031] Reference Figure 1 and Figure 4 A counting assembly 5 is arranged on the outside of the cylindrical outer tube 1, and the counting assembly 5 includes a circular ring 51. The cylindrical outer tube 1 is inserted into the inner wall of the circular ring 51. When the cylindrical outer tube 1 is inserted into the inside of the circular ring 51, the limiting ring 2 contacts the circular ring 51 to limit the cylindrical outer tube 1. A supporting column 52 is fixedly connected to the bottom surface of the circular ring 51, and a base 53 is fixedly connected to the bottom end of the supporting column 52. The circular ring 51 and the base 53 are connected together by the supporting column 52, so as to support the cylindrical outer tube 1, so that a space is left between the punching head 42 and the base 53, which is convenient for placing a blood card or a saliva card. A counter 54 is fixedly mounted on the surface of the base 53. A groove 55 is provided on the surface of the base 53. A pad 56 is slidably connected to the inner wall of the groove 55. The counting button of the counter 54 is fixedly mounted on the inner wall of the groove 55. The counting button of the counter 54 fits with the bottom surface of the pad 56. By placing a blood card or a saliva card on the surface of the pad 56, when the punching head 42 rotates and moves downward, pressure is generated on the pad 56, causing the pad 56 to move downward, triggering the counting button of the counter 54, thereby displaying the number of times through the display screen of the counter 54.

[0032] Working principle: When in use, it is mainly completed through four steps: cutting, counting, storing and releasing.

[0033] 1. Cutting:

[0034] 1.1. Insert the cylindrical outer tube 1 into the circular ring 51 , and the limiting ring 2 contacts the circular ring 51 to limit the position of the cylindrical outer tube 1 .

[0035] 1.2. Place the blood card or saliva card on the surface of the pad 56, press the pressure block 431 to move the threaded rod 43 downward, the return spring 45 is compressed, and the spiral groove 46 cooperates with the slider 47 to make the threaded rod 43 drive the collar 44 to move downward, the slider 47 rotates under the influence of the spiral groove 46, and the punching head 42 rotates and moves downward to fit the surface of the blood card or saliva card, thereby improving the cutting effect of the blood card or saliva card.

[0036] 2. Count:

[0037] 2.1. When the punching head 42 rotates and moves downward (see step 1.2 for details), pressure is generated on the pad 56, causing the pad 56 to move downward, triggering the counting button of the counter 54, so that the number of times is displayed on the display screen of the counter 54.

[0038] 3. Storage

[0039] 3.1. By releasing the pressure block 431, the return spring 45 rebounds the collar 44, so that the punching head 42 returns to its original position. At this time, the blood card or saliva card is partially cut due to the rotation of the punching head 42, and the punching head 42 (such as Figure 3 As shown in the figure, its shape is small at the bottom and large at the top (at present, the relevant punching heads 42 in the industry are all configured in this way), and because the punching head 42 rotates and cuts, it will be embedded in the blood card or saliva card, so the cut part of the blood card or saliva card will remain in the punching head 42.

[0040] 4. Release

[0041] 4.1. Transfer the cylindrical outer tube 1 to the top of the centrifuge tube (or reagent tube), press the pressure block 431 to move the threaded rod 43 downward, the return spring 45 is compressed, and the threaded rod 43 moves downward. At this time, the threaded sleeve 41 is in an extended state, and the threaded sleeve 41 is rotated so that the ejector pin at the end of the threaded rod 43 is pushed into the inside of the punching head 42, and the blood card or saliva card stored in the punching head 42 is ejected from the punching head 42, completing the release function. After the release is completed, the threaded rod 43 and the threaded sleeve 41 are restored to their original positions for the next use.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sample punching tool, comprising a cylindrical outer tube (1), characterized in that: A limit ring (2) is fixedly connected to the outer wall of the cylindrical outer tube (1), a punching assembly (4) is arranged inside the cylindrical outer tube (1), a counting assembly (5) is arranged outside the cylindrical outer tube (1), and the counting assembly (5) comprises a circular ring (51). The cylindrical outer tube (1) is inserted into the inner wall of the circular ring (51), a support column (52) is fixedly connected to the bottom surface of the circular ring (51), a base (53) is fixedly connected to the bottom end of the support column (52), a counter (54) is fixedly mounted on the surface of the base (53), a groove (55) is provided on the surface of the base (53), and a pad (56) is slidably connected to the inner wall of the groove (55).

2. A sample punching tool according to claim 1, characterized in that: The punching assembly (4) comprises a threaded sleeve (41) which is inserted into the bottom end of the cylindrical outer tube (1); a threaded rod (43) is threadedly connected to the surface of the threaded sleeve (41); and a collar (44) is fixedly connected to the outer wall of the threaded rod (43).

3. A sample punching tool according to claim 2, characterized in that: A punching cutter head (42) is fixedly connected to the bottom surface of the threaded sleeve (41), and a storage groove is provided at the bottom end of the punching cutter head (42).

4. A sample punching tool according to claim 2, characterized in that: A spiral groove (46) is provided on the inner wall of the cylindrical outer tube (1), a slider (47) is slidably connected to the inner wall of the spiral groove (46), and the slider (47) is fixedly connected to the side wall of the collar (44).

5. A sample punching tool according to claim 2, characterized in that: The threaded rod (43) penetrates through and is rotatably connected to the top end of the cylindrical outer tube (1), and a pressing block (431) is fixedly connected to the top end of the threaded rod (43).

6. A sample punching tool according to claim 2, characterized in that: A support ring (3) is fixedly connected to the inner wall of the cylindrical outer tube (1), and the sleeve ring (44) is elastically connected to the support ring (3) via a return spring (45).

7. A sample punching tool according to claim 2, characterized in that: A rotating wheel (411) is fixedly connected to the outer wall of the threaded sleeve (41), and a plurality of groups of anti-slip teeth distributed in an array are arranged on the outer wall of the rotating wheel (411).

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