Tool for collecting cast-off cells in lockhole

Abstract

The utility model discloses a tool for collecting cast-off cells in a lockhole, and belongs to the technical field of material evidence collection, the collection tool comprises a collection rod, a handle arranged at one end of the collection rod and used for being held by hand, and a flocked swab arranged at one end, far away from the handle, of the collection rod and used for collecting cast-off cells; the collecting tool further comprises an elastic body fixedly arranged at the end, away from the handle, of the collecting rod in a sleeving mode and a driving assembly arranged in the collecting rod to enable the elastic body to expand or contract, and the flocking swab wraps the outer side of the elastic body. According to the tool for collecting the cast-off cells in the lock hole, the elastic body is expanded or shrunk through the driving assembly, and the flocking swab wrapping the outer side of the elastic body can be synchronously driven to be expanded or shrunk, so that the collecting tool can adapt to lock cylinders with different sizes within a certain range, and the cast-off cells attached to the inner walls of the lock cylinders are more effectively collected; and the universality and the applicability of the collection tool are improved.

Description

A tool for collecting exfoliated cells inside a keyhole Technical Field

[0001] This application relates to the field of evidence collection technology, specifically a tool for collecting exfoliated cells from keyholes. Background Technology

[0002] For theft and other cases involving technical lock picking, obtaining detached cells from the lock cylinder and conducting DNA testing is a crucial investigative method. This method mainly involves analyzing the detached cells remaining in the lock cylinder, which can provide important clues and evidence for solving the case, helping to identify the suspect and improve the efficiency of case solving.

[0003] Currently, common methods for collecting exfoliated cells from keyholes often involve using simple flocked swabs to directly swab the lock cylinder. However, traditional flocked swabs are typically designed to a fixed size. When dealing with lock cylinders of different models or specifications, the fixed-size flocked swabs cannot fit tightly against the inner wall of various lock cylinders. This results in insufficient contact with the exfoliated cells attached to the inner wall of the lock cylinder during the collection process, leading to low collection efficiency and the potential for missing crucial biological evidence, thus affecting the accuracy and success rate of subsequent DNA testing.

[0004] Therefore, this application provides a tool for collecting exfoliated cells inside a keyhole to solve the above-mentioned problems. Summary of the Invention

[0005] This application provides a tool for collecting exfoliated cells inside keyholes, aiming to solve the problems mentioned in the background art, such as the fixed size design of the flocked swab, which makes it difficult to adapt to different lock cylinder inner walls, easily leading to low collection efficiency and affecting the accuracy and success rate of DNA testing.

[0006] To achieve the above objectives, this application provides the following technical solution: a tool for collecting exfoliated cells inside a keyhole, comprising a collection rod, a handle disposed at one end of the collection rod for holding, and a flocked swab disposed at the end of the collection rod away from the handle for collecting exfoliated cells;

[0007] The collection tool also includes an elastic body fixedly sleeved on the end of the collection rod away from the handle, and a driving component disposed inside the collection rod to expand or contract the elastic body. The flocked swab is wrapped around the outside of the elastic body. By expanding or contracting the elastic body through the driving component, the flocked swab wrapped around the outside of the elastic body can be expanded or contracted synchronously, thereby enabling the collection tool to adapt to lock cylinders of different sizes within a certain range, and to more effectively collect detached cells attached to the inner wall of the lock cylinder, improving the versatility and applicability of the collection tool. The handle is designed to facilitate the operator's holding of the collection rod, providing a good grip and operational stability.

[0008] Preferably, in order to achieve synchronous expansion or contraction of the flocked swabs, the elastomer is an air bladder; the air bladder has good elasticity and plasticity, and can expand or contract relatively evenly when inflated or deflated with gas, thereby effectively driving the flocked swabs wrapped around its outer side to expand or contract synchronously.

[0009] Preferably, to achieve expansion or contraction of the elastomer, the drive assembly includes an air cylinder fixedly disposed within the collection rod for storing gas, a piston slidably connected within the air cylinder, a push rod passing through the end of the air cylinder near the handle and fixedly connected to the piston, a gas channel fixedly disposed within the collection rod with its two ends communicating with the end of the air cylinder away from the push rod and the elastomer, linearly distributed toothed grooves fixedly disposed on the side of the push rod away from the piston, and a gear rotatably connected within the collection rod and meshing with the toothed grooves. The push rod is slidably connected within the air cylinder and the collection rod. Through the meshing of the gear and the toothed grooves, the operator can push or pull the push rod by rotating the gear, thereby causing the piston to slide within the air cylinder, thus adjusting the degree of expansion of the elastomer to accommodate lock cylinders of different sizes.

[0010] Preferably, to facilitate gear operation, the drive assembly includes a rotating rod that passes through the collection rod and is fixedly connected to the gear, and a knob disposed on the outside of the collection rod and fixedly connected to the rotating rod. The rotating rod is rotatably connected to the collection rod. The knob allows the operator to easily rotate the gear from outside the collection rod, greatly improving the ease of operation. The operator does not need complicated hand movements; they only need to simply rotate the knob.

[0011] Preferably, to facilitate the operation of the collection tool, the outer surface of the handle is fixedly provided with anti-slip texture; the anti-slip texture design increases the friction of the handle surface, making it less likely for the operator's hand to slip when holding the handle for collection operations, providing a more stable grip, preventing the handle from slipping out of the hand, avoiding damage to the collection tool or collection failure, and improving the quality and efficiency of the collection work.

[0012] Preferably, to facilitate the reuse of the handle, the end of the handle near the collection rod is provided with an internal thread, and the end of the collection rod away from the flocked swab is provided with an external thread that matches the internal thread; the threaded connection design of the external and internal threads allows the handle and collection rod to be easily disassembled and assembled, and the operator can easily separate the handle from the collection rod, so that the handle can be reused and the long-term use cost can be reduced.

[0013] This tool for collecting exfoliated cells inside keyholes expands or contracts an elastomer via a drive component, which simultaneously expands or contracts the flocked swab wrapped around the elastomer. This allows the tool to adapt to lock cylinders of different sizes within a certain range, more effectively collecting exfoliated cells attached to the inner wall of the lock cylinder, thus improving the tool's versatility and applicability.

[0014] This tool for collecting exfoliated cells inside keyholes features a handle that allows operators to easily hold the collection rod. The anti-slip textured design increases friction on the handle surface, preventing the operator's hand from slipping during collection and providing a more stable grip, thus improving the quality and efficiency of the collection process.

[0015] This tool for collecting exfoliated cells inside the keyhole features a threaded connection design with both external and internal threads, allowing for easy disassembly and assembly of the handle and collection rod. Operators can easily separate the handle from the collection rod, enabling the handle to be reused and reducing long-term usage costs. Attached Figure Description

[0016] Figure 1 is a schematic diagram of a tool for collecting exfoliated cells inside a keyhole in Example 1;

[0017] Figure 2 is a cross-sectional view of a tool for collecting exfoliated cells inside a keyhole in Example 1;

[0018] Figure 3 is a partial structural schematic diagram of a driving component in Embodiment 1;

[0019] Figure 4 is a cross-sectional view of a tool for collecting exfoliated cells inside a keyhole in Example 2.

[0020] In the picture:

[0021] 1. Data collection rod; 11. External thread;

[0022] 2. Handle; 21. Anti-slip texture; 22. Internal thread;

[0023] 3. Flocked swabs;

[0024] 4. Elastomers;

[0025] 5. Drive assembly; 51. Air cylinder; 52. Piston; 53. Push rod; 54. Gas passage; 55. Gear; 56. Gear; 57. Rotating rod; 58. Knob. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Example 1

[0028] This embodiment provides a tool for collecting exfoliated cells from a keyhole, as shown in Figures 1-3. The tool includes a collection rod 1, a handle 2 for holding at one end of the collection rod 1, and a flocked swab 3 for collecting exfoliated cells at the end of the collection rod 1 away from the handle 2. The tool also includes an elastic body 4 fixedly sleeved on the end of the collection rod 1 away from the handle 2, and a drive assembly 5 disposed inside the collection rod 1 to expand or contract the elastic body 4. The flocked swab 3 is wrapped around the outside of the elastic body 4.

[0029] In order to achieve synchronous expansion or contraction of the flocked swab 3, the elastomer 4 is an air bladder; the air bladder has good elasticity and plasticity, and can expand or contract relatively evenly when filled with gas or discharged with gas, so as to drive the flocked swab 3 wrapped on its outside to expand or contract synchronously.

[0030] It should be added that the minimum diameter of flocked swab 3 is 1mm and the minimum length is 5mm.

[0031] In use, the operator first holds handle 2, which is connected to the collection rod 1, providing a stable grip and control basis. By holding handle 2, the operator can flexibly insert the collection rod 1 and its front end into the keyhole. Then, when the front end of the collection rod 1 reaches the appropriate position in the keyhole, the operator starts to operate the drive component 5 set inside the collection rod 1, causing the elastic body 4 to expand. Since the flocked swab 3 is wrapped around the outside of the elastic body 4, the expansion of the elastic body 4 will synchronously drive the flocked swab 3 to expand. The expanded flocked swab 3 can fit tightly against lock cylinders of different sizes. On the inner wall, the operator then operates the collection rod 1 to wipe the flocked swab 3 on the inner wall of the lock cylinder. The fluffy structure on the surface of the flocked swab 3 can adsorb these shed cells, thus completing the collection of shed cells. Finally, the shed cells are extracted for DNA testing for verification. When the cell collection is completed and the collection tool needs to be removed, the operator reverses the operation of the drive component 5 to make the elastic body 4 contract. Then, the elastic body 4 will synchronously drive the flocked swab 3 to contract. After contraction, the flocked swab 3 becomes smaller, which can be easily removed from the lock hole without causing significant friction or damage to the inner wall of the lock hole.

[0032] Specifically, the drive assembly 5 includes an air cylinder 51 fixedly installed inside the collection rod 1 for storing gas, a piston 52 slidably connected inside the air cylinder 51, a push rod 53 passing through the end of the air cylinder 51 near the handle 2 and fixedly connected to the piston 52, a gas channel 54 fixedly installed inside the collection rod 1 with its two ends respectively connected to the end of the air cylinder 51 away from the push rod 53 and the elastic body 4, a toothed groove 55 fixedly installed on the side of the push rod 53 away from the piston 52 and linearly distributed, and a gear 56 rotatably connected inside the collection rod 1 and meshing with the toothed groove 55. The push rod 53 is slidably connected to the air cylinder 51 and the collection rod 1. The drive assembly 5 includes a rotating rod 57 passing through the collection rod 1 and fixedly connected to the gear 56, and a knob 58 located outside the collection rod 1 and fixedly connected to the rotating rod 57. The rotating rod 57 is rotatably connected to the collection rod 1.

[0033] When the collection tool is not in use, the elastomer 4 is in a contracted state, and the flocked swab 3 also maintains a smaller shape, making it easy to insert the collection rod 1 and its front end into the keyhole. At this time, the air cylinder 51 stores a certain amount of gas, and the piston 52 is in the corresponding initial position inside the air cylinder 51. However, when the operator needs to collect exfoliated cells from the keyhole, he holds the handle 2, inserts the collection rod 1 into the keyhole, and then rotates the knob 58 located on the outside of the collection rod 1. Since the knob 58 is fixedly connected to the rotating rod 57, and the rotating rod 57 passes through the collection rod 1 and is fixed to the gear 56, the operator can collect cells from the keyhole. Therefore, rotating the knob 58 will drive the rotating rod 57 to rotate, which in turn will cause the gear 56 to rotate. The gear 56 meshes with the linearly distributed tooth grooves 55 fixed on the side of the push rod 53 away from the piston 52. Therefore, when the gear 56 rotates, due to the linear distribution of the tooth grooves 55, the rotation of the gear 56 will be converted into the linear motion of the push rod 53, which can push or pull the push rod 53 to slide inside the air cylinder 51 and the collection rod 1. When the push rod 53 pushes into the air cylinder 51, the piston 52 also moves into the air cylinder 51, and the gas in the air cylinder 51... When compressed, the gas flows into the elastic body 4 through the gas channel 54, which is connected to the end of the air cylinder 51 away from the push rod 53 and the elastic body 4 respectively. The gas inflowing into the elastic body 4 causes it to expand. Because the flocked swab 3 is wrapped around the outside of the elastic body 4, the expansion of the elastic body 4 causes the flocked swab 3 to expand synchronously. The expanded flocked swab 3 can then adhere tightly to the inner wall of lock cylinders of different sizes. Afterwards, by operating the collection rod 1 and using the flocked swab 3 to partially wipe the inner wall of the lock cylinder, residual cells from the person who unlocked the lock can be absorbed. In the cell collection operation, when the collection tool needs to be removed after cell collection is completed, the operator turns the knob 58 in the opposite direction, causing the gear 56 to rotate in the opposite direction, which in turn drives the push rod 53 to move in the opposite direction. The piston 52 also moves out of the air cylinder 51. At this time, the gas in the elastic body 4 is drawn back into the air cylinder 51 through the gas channel 54. Immediately afterwards, the elastic body 4 contracts, and the elastic body 4 also drives the flocked swab 3 to contract synchronously. After contraction, the flocked swab 3 becomes smaller, which makes it easier to remove the collection tool from the keyhole without causing significant friction or damage to the inner wall of the keyhole.

[0034] In addition, to facilitate the operation of the collection tool, the outer surface of the handle 2 is fixedly provided with anti-slip texture 21. The design of anti-slip texture 21 increases the friction of the handle 2 surface, making it less likely for the operator's hand to slip when holding the handle 2 for collection operations, providing a more stable grip, preventing the handle 2 from slipping out of the hand, avoiding damage to the collection tool or collection failure, and improving the quality and efficiency of the collection work.

[0035] Example 2

[0036] Unlike Embodiment 1, as shown in Figure 4, in order to facilitate the repeated use of the handle 2, the end of the handle 2 near the collection rod 1 is provided with an internal thread 22, and the end of the collection rod 1 away from the flocked swab 3 is provided with an external thread 11 that matches the internal thread 22.

[0037] When collecting exfoliated cells from a keyhole using a collection tool, the operator aligns the end of the collection rod 1 with the external thread 11 and the end of the handle 2 with the internal thread 22. Since the external thread 11 and internal thread 22 are compatible, the operator can rotate the collection rod 1 or handle 2 to gradually screw the external thread 11 into the internal thread 22. As rotation continues, the external thread 11 and internal thread 22 engage tightly, and the collection rod 1 and handle 2 are gradually connected. This threaded connection provides a relatively secure connection, ensuring that the handle 2 and collection rod 1 will not easily separate during the collection operation, thus guaranteeing... The stability of the collection rod 1 when the operator holds the handle 2 provides a reliable foundation for accurately inserting the flocked swab 3 into the keyhole and collecting cells. After the collection is completed, the operator can rotate the collection rod 1 or the handle 2 in the opposite direction to allow the external thread 11 to gradually unscrew from the internal thread 22. As the rotation continues, the external thread 11 and the internal thread 22 gradually separate, and finally the collection rod 1 and the handle 2 are disassembled. This design allows the handle 2 to be kept separately and reused after disinfection, thus eliminating the need to discard or replace the entire collection tool and reducing the cost of long-term use.

[0038] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A tool for collecting exfoliated cells from a keyhole, characterized in that: The collection tool includes a collection rod (1), a handle (2) for holding at one end of the collection rod (1), and a flocked swab (3) for collecting exfoliated cells at the end of the collection rod (1) away from the handle (2). The collection tool also includes an elastic body (4) fixedly sleeved at the end of the collection rod (1) away from the handle (2) and a drive assembly (5) disposed inside the collection rod (1) to expand or contract the elastic body (4). The flocked swab (3) is wrapped around the outside of the elastic body (4).

2. The tool for collecting exfoliated cells inside a keyhole according to claim 1, characterized in that: The elastomer (4) is an air bladder.

3. The tool for collecting exfoliated cells inside a keyhole according to claim 2, characterized in that: The drive assembly (5) includes a gas cylinder (51) fixedly disposed in the collection rod (1) for storing gas, a piston (52) slidably connected in the gas cylinder (51), a push rod (53) passing through the end of the gas cylinder (51) near the handle (2) and fixedly connected to the piston (52), a gas channel (54) fixedly disposed in the collection rod (1) and having both ends connected to the end of the gas cylinder (51) away from the push rod (53) and the elastic body (4) respectively, a toothed groove (55) fixedly disposed on the side of the push rod (53) away from the piston (52) and linearly distributed, and a gear (56) rotatably connected in the collection rod (1) and meshing with the toothed groove (55). The push rod (53) is slidably connected in the gas cylinder (51) and the collection rod (1).

4. The tool for collecting exfoliated cells inside a keyhole according to claim 3, characterized in that: The drive assembly (5) includes a rotating rod (57) that passes through the acquisition rod (1) and is fixedly connected to the gear (56), and a knob (58) that is disposed on the outside of the acquisition rod (1) and fixedly connected to the rotating rod (57). The rotating rod (57) is rotatably connected to the acquisition rod (1).

5. The tool for collecting exfoliated cells inside a keyhole according to claim 1, characterized in that: The outer surface of the handle (2) is fixedly provided with anti-slip texture (21).

6. The tool for collecting exfoliated cells inside a keyhole according to claim 1, characterized in that: The handle (2) has an internal thread (22) at the end near the collection rod (1), and the collection rod (1) has an external thread (11) that matches the internal thread (22) at the end away from the flocked swab (3).

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