Micro trace collection instrument

Abstract

The utility model discloses a trace collection appearance, relate to the technical field of collection equipment, wherein, trace collection appearance, including collection body, rotation part and liquid extraction part, the utility model discloses the technical scheme is integrated with the rotation part and liquid extraction part in the sampling body, to this can assist to realize the operation such as drilling sampling, wiping sampling and liquid extraction sampling, and the sampling cost of the equipment such as preparation rig, tweezers or needle cylinder is increased to be dispensed with, and the integrated setting of sampling body cooperates sampling relevant accessories, can through the same equipment auxiliary complete a variety of sampling process, greatly improve the sampling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of data acquisition equipment technology, and in particular to a micro-trace acquisition instrument. Background Technology

[0002] In the process of drug enforcement and prosecution, in order to achieve complete evidence collection, it is necessary to carefully collect various traces at the scene. The scope of collection generally includes, but is not limited to, walls, tabletops, liquids, etc. Walls need to be sampled by drilling holes, tabletops need to be sampled by wiping with test strips, and liquids are usually sampled by aspirating with syringes. These collection operations all require different collection equipment to be used in conjunction. To complete a trace collection, a large number of auxiliary equipment needs to be prepared, which increases the difficulty of operation preparation and reduces collection efficiency by using different equipment to assist in collection. Utility Model Content

[0003] The main purpose of this invention is to propose a micro-trace acquisition instrument, which aims to reduce the number of auxiliary acquisition devices and improve the efficiency of trace acquisition.

[0004] To achieve the above objectives, the micro-trace acquisition instrument proposed in this utility model includes:

[0005] Collect the main body;

[0006] A rotating part is disposed within the acquisition body, and the insertion port of the rotating part is exposed on the side of the acquisition body;

[0007] A liquid extraction section is provided inside the collection body, and the liquid suction port of the liquid extraction section is exposed on the side of the collection body;

[0008] The rotating part and the liquid suction part are disposed at an interval within the collection body, and the insertion port and the liquid suction port are both disposed on the same side of the collection body.

[0009] In one embodiment, the acquisition body is provided with a first movable part, which is sleeved on the plug-in port to push out the sampling component part plugged into the plug-in port.

[0010] In one embodiment, the first moving part includes an ejector and a first pushing member, the ejector being sleeved on the insertion port;

[0011] The first pushing member is slidably disposed on the surface of the collection body, and a portion of the first pushing member extends into the collection body and is connected to the ejector member.

[0012] In one embodiment, the rotating part includes a driving part and the plug-in port, the driving part is disposed in the acquisition body, and the output end of the driving part is connected to the plug-in port;

[0013] The plug-in port has an opening that faces away from the acquisition body.

[0014] In one embodiment, the liquid extraction part includes a liquid extraction body and a pull-out part. The liquid extraction body is hollow and disposed within the sampling body. The liquid suction port is provided on the side of the liquid extraction body, and the pull-out part is slidably connected to the liquid extraction body.

[0015] In one embodiment, the collection body is further provided with a second moving part, which is connected to the pull-out part to drive the pull-out part to move within the liquid collection body.

[0016] In one embodiment, the second moving part includes a second pushing member and a driven member. The driven member is slidably disposed in the collection body and connected to the pull-out part. The second pushing member is slidably connected to the surface of the collection body. The second pushing member extends into the collection body and is connected to the driven member.

[0017] In one embodiment, the collection body includes a collection housing and a main body. The collection housing is arranged around the main body, and the collection housing has two assembly cavities separated by the main body. The rotating part and the liquid extraction part are respectively disposed in the two assembly cavities.

[0018] In one embodiment, the extension of the first pusher extends into the assembly cavity and along the inner wall of the collection housing; the first pusher extends to the side of the ejector and is connected to the ejector.

[0019] The extension of the second pusher extends into the assembly cavity and along the inner wall of the collection housing. The second pusher extends to the side of the driven member and is connected to the driven member.

[0020] In one embodiment, the acquisition body is provided with a control unit, which controls the operation of the rotating part.

[0021] The technical solution of this utility model integrates a rotating part and a liquid extraction part into the sampling body, which can assist in drilling sampling, wiping sampling and liquid extraction sampling, saving the sampling cost of preparing equipment such as drills, tweezers or syringes. Moreover, the integrated sampling body, together with sampling-related accessories, can assist in completing multiple sampling processes with the same equipment, which greatly improves the sampling efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram of a structure of an embodiment of the trace acquisition instrument provided by this utility model;

[0024] Figure 2 A side view of an embodiment of the trace acquisition instrument provided by this utility model;

[0025] Figure 3 for Figure 2 Sectional view at point AA;

[0026] Figure 4 for Figure 2 Sectional view at point BB;

[0027] Figure 5 A schematic diagram of another embodiment of the trace acquisition instrument provided by this utility model;

[0028] Figure 6 A schematic diagram of another embodiment of the trace acquisition instrument provided by this utility model;

[0029] Figure 7 This is a schematic diagram of another embodiment of the micro-trace acquisition instrument provided by this utility model.

[0030] Explanation of icon numbers:

[0031] 100. Micro-trace acquisition device; 10. Acquisition body; 11. Acquisition housing; 12. Main body; 20. First moving part; 21. First pushing member; 22. First connecting member; 23. Ejector; 30. Second moving part; 31. Second pushing member; 32. Second connecting member; 33. Driven member; 50. Illumination part; 60. Rotating part; 61. Connection port; 62. First opening; 63. Plug-in port; 64. Drive part; 70. Liquid extraction part; 71. Pull-out part; 72. Liquid extraction body; 73. Liquid suction port; 74. Liquid suction port; 80. Control part; 81. Control motherboard; 82. Charging port; 83. First switch; 84. Second switch.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] In the process of drug enforcement and prosecution, in order to achieve complete evidence collection, it is necessary to carefully collect various traces at the scene. The scope of collection generally includes, but is not limited to, walls, tabletops, liquids, etc. Walls need to be sampled by drilling holes, tabletops need to be sampled by wiping with test strips, and liquids are usually sampled by aspirating with syringes. These collection operations all require different collection equipment to be used in conjunction. To complete a trace collection, a large number of auxiliary equipment needs to be prepared, which increases the difficulty of operation preparation and reduces collection efficiency by using different equipment to assist in collection.

[0037] This utility model proposes a micro-trace acquisition instrument.

[0038] Please see Figure 1 In one embodiment of this utility model, the trace acquisition device includes:

[0039] Collect 10 units;

[0040] A rotating part 60 is disposed inside the acquisition body 10, and the insertion port 63 of the rotating part 60 is exposed on the side of the acquisition body 10.

[0041] The liquid extraction section 70 is disposed inside the collection body 10, and the liquid suction port 74 of the liquid extraction section 70 is exposed on the side of the collection body 10.

[0042] The rotating part 60 and the liquid suction part 70 are disposed at intervals within the collection body 10, and the insertion port 63 and the liquid suction port 74 are both disposed on the same side of the collection body 10.

[0043] like Figure 1 As shown, the collection body 10 is in the shape of a long column, which allows the user to hold the collection body 10 stably on its outer side.

[0044] It is understandable that when using the acquisition body 10 to collect traces, the user holds the acquisition body 10 on the part away from the rotating part 60, so that the user can hold it stably and operate the acquisition device conveniently.

[0045] When collecting samples from a wall, it is necessary to collect powder samples from the area to be sampled on the wall. This can be done by drilling holes in the wall with a drill bit, but the drill bit requires a drilling machine, which increases the sampling cost. In addition, the need to prepare a drilling machine during the collection process affects efficiency.

[0046] It is understandable that when drilling into a wall, the drill bit needs to be rotated. Therefore, the drill bit is inserted into the insertion port 63, so that the rotation of the drill bit can be driven by the power output of the rotating part 60.

[0047] Furthermore, in order to ensure stability when holding the sampling body, anti-friction textures are provided on the surface of the sampling body.

[0048] It should be noted that when the drill bit directly drills into the wall, a collection groove with an opening facing the drilling position is provided on the drill bit.

[0049] It is understandable that the drill bit will bring out powdery samples during the drilling process, so that the samples can be directly collected by the collection tank, saving secondary processing and improving collection efficiency.

[0050] When sampling traces on the table, it is generally done by wiping with test strips. During the sampling process, the test strip needs to be moved and wiped on the table. In order to avoid the sampling personnel's fingers affecting the accuracy of the sampling, tweezers are needed to hold the test strip, which increases the cost of test strip sampling and affects efficiency.

[0051] It is understood that the component with the test strip is inserted into the insertion port 63, and the sampling part of the test strip is away from the sampling body 10. Thus, when collecting samples, the test strip faces the table, and the rotating part 60 drives the component to rotate, thereby making the test strip rotate on the table and completing the wiping and collection of the test strip.

[0052] Meanwhile, in order to facilitate the insertion of the drill bit and the component with the test paper into the insertion port 63, and to enable the rotation of the insertion port 63 to drive the drill bit and the component to rotate, the inner wall of the insertion port 63 needs to be in close contact with the insertion part of the drill bit and the component. This is to avoid relative rotation between the insertion port 63 and the drill bit or component when the insertion port 63 rotates, which would affect the transmission efficiency.

[0053] In one embodiment, in order to collect residual liquid at the site, the suction port 74 is inserted into the liquid, and the suction unit 70 is driven to collect the liquid.

[0054] Furthermore, the insertion port 63 of the rotating part 60 and the suction port 74 of the liquid extraction part 70 are both located on the same side of the sampling body, so that the drill bit, the component with the test strip, and the liquid collection can all be operated in one piece without the need to change the operation mode of the sampling instrument, which is beneficial to improving the sample collection efficiency.

[0055] The technical solution of this utility model integrates a rotating part 60 and a liquid extraction part 70 into the sampling body, thereby assisting in drilling sampling, wiping sampling, and liquid extraction sampling, eliminating the sampling cost increase caused by preparing equipment such as drills, tweezers, or syringes. Furthermore, the integrated sampling body 10, together with sampling-related accessories, can assist in completing multiple sampling processes with the same equipment, greatly improving sampling efficiency.

[0056] In one embodiment, the acquisition body 10 is provided with a first moving part 20, which is sleeved on the insertion port 63 to push out the sampling component part inserted into the insertion port 63.

[0057] It should be noted that when the component for wiping and sampling is inserted into the insertion port 63, if the component is removed by hand after sampling is completed, the sample may be easily contaminated due to the small distance between the component and the sampling body 10.

[0058] Therefore, such as Figure 2 and Figure 3 As shown, by driving the first moving part 20, the first moving part 20 sleeved on the plug-in port 63 can move and push out the component plugged into the plug-in port 63, thereby increasing the distance between the component and the sampling body 10, providing a gripping space for removing the component by hand, thereby avoiding contamination of the sample.

[0059] In one embodiment, the portion of the first movable part 20 disposed on one side of the plug-in port 63 may be disposed parallel to the side of the plug-in port 63. That is, when the first movable part 20 moves, the portion of the first movable part 20 located on one side of the plug-in port 63 can contact the component, thereby facilitating the component to detach from the plug-in port 63.

[0060] Furthermore, the first moving part 20 located on one side of the plug-in port 63 can be symmetrically arranged on the side of the plug-in port, so as to smoothly push out the component plugged into the plug-in port 63.

[0061] In one embodiment, the first moving part 20 includes an ejector 23 and a first pushing member 21, wherein the ejector 23 is sleeved on the insertion port 63;

[0062] The first pushing member 21 is slidably disposed on the surface of the collection body 10, and part of the first pushing member 21 extends into the collection body 10 and is connected to the ejector member 23.

[0063] It is understandable that, such as Figure 5 As shown, the ejector 23 is disposed on the side of the insertion port 63 to eject the part portion inserted into the insertion port 63.

[0064] It is understood that the first pusher 21 is slidably disposed on the surface of the sampling body 10. In order to enable the ejector 23 to move on the side of the plug-in port 63, the first pusher 21 extends into the sampling body 10 and is connected to the ejector 23.

[0065] Meanwhile, a first moving groove is provided on the side of the sampling body 10, the first pushing member 21 is slidably disposed on the surface of the sampling body 10, and the extended part of the first pushing member 21 passes through the first moving groove, so that when the sampling personnel manually drive the first pushing member 21 to move on the surface of the sampling body 10, the extended part of the first pushing member 21 can move in the first moving groove, thereby driving the ejector 23 to move.

[0066] It should be noted that, in order to facilitate the stable movement of the first pusher 21 by the sampling personnel, friction texture is provided on the surface of the first pusher 21 to improve the stability of the sampling personnel when contacting the first pusher 21 by increasing friction.

[0067] Furthermore, by providing an arc surface on the first pusher 21 that is away from the surface of the sampling body 10, when the sampling personnel's fingers touch the arc surface of the first pusher, the sampling personnel's fingers will fit against the arc surface, which facilitates the stable movement of the first pusher 21.

[0068] In one embodiment, the rotating part 60 includes a driving part 64 and the plug-in port 63. The driving part 64 is disposed inside the acquisition body 10, and the output end of the driving part 64 is connected to the plug-in port 63.

[0069] The plug-in port 63 has an opening that faces away from the acquisition body 10.

[0070] In order to enable the rotation of the drill bit or components, the insertion port 63 needs to be rotated.

[0071] Therefore, as Figure 5 As shown, the output end of the drive unit 64 is connected to the plug-in port 63, and the power output of the drive unit 64 drives the plug-in port 63 to rotate, which facilitates the control of the rotation of the drill bit or parts.

[0072] In one embodiment, the drive unit 64 may be a motor, and the output end of the motor is connected to the plug-in port 63 via a coupling.

[0073] In order to expose the plug-in port 63, a first opening 62 is provided on the side of the sampling body 10, and the plug-in port 63 passes through the first opening 62, thereby facilitating the connection of components to the plug-in port 63.

[0074] In one embodiment, the liquid extraction part 70 includes a liquid extraction body 72 and a pull-out part 71. The liquid extraction body 72 is hollow and disposed inside the sampling body 10. The liquid suction port 73 is provided on the side of the liquid extraction body 72, and the pull-out part 71 is slidably connected to the liquid extraction body 72.

[0075] like Figure 4 As shown, the liquid extraction body 72 is hollow, and the pull-out part 71 is inserted into the liquid extraction body 72, thereby forming an air extraction space inside the liquid extraction body 72. By pushing the pull-out part 71, air can be extracted or expelled from the air extraction space, thus facilitating the absorption of liquid when the liquid suction port 73 is inserted into the liquid.

[0076] like Figure 6 As shown, a second opening 74 is provided on the side of the sampling body 10, and the liquid suction port 73 passes through the second opening 74.

[0077] In one embodiment, a syringe can be inserted into the aspiration port 73 to form a relatively sealed space in the syringe. Thus, when the aspiration port of the syringe is inserted into the liquid, the movement of the pull-out part 71 can draw the liquid into the syringe, completing the liquid aspiration sampling operation.

[0078] It should be noted that after completing the sample collection, the syringe nozzle should be sealed to facilitate removal of the syringe.

[0079] In order to stably install the syringe on the aspiration port, the aspiration port is frustoconical and tapers away from the sampling body 10. This allows for a stable insertion and fit with the syringe, and also allows the syringe to be stably fixed to the sampling body 10 by the interference fit of the taper aspiration port.

[0080] Furthermore, in order to avoid the syringe being too large and affecting the connection with the aspiration port, the size of the second opening 74 needs to be larger than the diameter of the syringe.

[0081] In one embodiment, the collection body 10 is further provided with a second moving part 30, which is connected to the pull-out part 71 to drive the pull-out part 71 to move within the liquid collection body 72.

[0082] It is understood that the movement of the pull-out part 71 within the liquid extraction body 72 requires manual output from the sampling personnel. Therefore, the second moving part 30 is provided within the sampling body 10, and the movement of the pull-out part 71 can be achieved by driving the second moving part 30.

[0083] In one embodiment, the second moving part 30 includes a second pushing member 31 and a driven member 33. The driven member 33 is slidably disposed within the collection body 10 and connected to the pull-out part 71. The second pushing member 31 is slidably connected to the surface of the collection body 10. The second pushing member 31 extends partially into the collection body 10 and is connected to the driven member 33.

[0084] It is understood that the driven member 33 is connected to the part of the pull-out portion 71 that is away from the liquid suction port 73, while the second pusher 31 is slidably connected to the surface of the sampling body 10, and the extension of the second pusher 31 extends into the sampling body 1 and is connected to the driven member 33.

[0085] That is, the sampling personnel manually drive the second pusher 31 to move, thereby driving the driven member 33 to move through the transmission of the extension of the second pusher 31, and thus realizing the movement of the pull-out part 71.

[0086] In one embodiment, a second moving groove is provided on the surface of the sampling body 10, and the extension of the second pusher 31 passes through the second moving groove.

[0087] It is understandable that the length of the second moving groove determines the moving distance of the pull-out part 71.

[0088] It should be noted that, in order to facilitate the stable movement of the second pusher 31 by the sampling personnel, friction texture is provided on the surface of the second pusher 31 to improve the stability of the sampling personnel when contacting the second pusher 31 by increasing friction.

[0089] Furthermore, by providing an arc surface on the second pusher 31 away from the surface of the sampling body 10, when the sampling personnel's fingers touch the arc surface of the first pusher, the sampling personnel's fingers will fit against the arc surface, which facilitates the stable movement of the second pusher 31.

[0090] In one embodiment, the collection body 10 includes a collection housing 11 and a main body 12. The collection housing 11 is arranged around the main body 12, and two assembly cavities separated by the main body 12 are provided inside the collection housing 11. The rotating part 60 and the liquid extraction part 70 are respectively disposed in the two assembly cavities.

[0091] like Figures 5 to 7 As shown, the rotating part 60 and the liquid extraction part 70 are respectively located in the assembly cavity that are arranged opposite to each other, so as to avoid mutual interference between the rotating part 60 and the liquid extraction part 70.

[0092] like Figure 5 As shown, a first receiving cavity is provided in the main body 12 to accommodate the rotating part 60, and the driving part 64 and the plug-in port 63 are both disposed in the first receiving cavity.

[0093] like Figure 6 As shown, a second receiving cavity is provided in the main body 12 to accommodate the liquid extraction part 70, and the pull-out part 71 and the liquid extraction body 72 are both disposed in the first receiving cavity.

[0094] Furthermore, the main body 12 is provided with a third receiving cavity, and the third receiving cavity is located on one side of the second receiving cavity, and the follower 33 is slidably disposed in the third receiving cavity.

[0095] It is understood that when the second pusher 31 is driven to move, the driven member 33 moves within the third receiving cavity, thereby assisting in the movement of the pull-out part 71.

[0096] In one embodiment, the extension of the first pusher 21 extends into the assembly cavity and extends along the inner wall of the collection housing 11. The first pusher 21 extends to the side of the ejector 23 and is connected to the ejector 23.

[0097] The extension of the second pusher 31 extends into the assembly cavity and along the inner wall of the collection housing 11. The second pusher 31 extends to the side of the follower 33 and is connected to the follower 33.

[0098] like Figure 5 As shown, the extension of the first pusher 21 is the first connector 22. The first connector 22 is attached to the collection housing 11. One end of the first connector 22 extends toward the first pusher 21 and is connected to the first pusher 21. The other end of the first connector 22 is located on the side of the ejector 23 and is connected to the ejector 23.

[0099] It is understandable that by setting the first connector 22, the connection between the first pusher 21 and the ejector 23 is realized, and the first connector 22 is also close to the collection housing 11 to avoid affecting the operation of the rotating part 60.

[0100] like Figure 6 As shown, the extension of the second pusher 31 is the second connector 32. The second connector 32 is attached to the collection housing 11. One end of the second connector 32 extends toward the second pusher 31 and is connected to the second pusher 31. The other end of the second connector 32 is located on the side of the follower 33 and is connected to the follower 33.

[0101] In one embodiment, the acquisition body 10 is provided with a control unit 80, which controls the operation of the rotating part 60.

[0102] To facilitate observation of the working area via the sampling body 10 during operation, an illumination unit 50 is provided on the side of the sampling body 10.

[0103] like Figure 1 As shown, the control unit 80 is disposed on the surface of the acquisition housing 11. The control unit 80 includes a control motherboard 81, and the surface of the control motherboard 81 is provided with a charging port 82, a first switch 83 and a second switch 84.

[0104] It is understood that the main body 12 is provided with an energy storage unit, which is connected to the drive unit and the lighting unit 50 to provide energy to the drive unit and the lighting unit 50.

[0105] It is understood that the first switch 83 is connected to the drive unit, and the operation of the drive unit is controlled by controlling the opening and closing of the first switch 83.

[0106] It is understood that the second switch 84 is connected to the lighting unit 50, and the operation of the lighting unit 50 is controlled by controlling the opening and closing of the second switch 84.

[0107] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A trace acquisition instrument, characterized in that, include: Collect the main body; A rotating part is disposed within the acquisition body, and the insertion port of the rotating part is exposed on the side of the acquisition body; A liquid extraction section is provided inside the collection body, and the liquid suction port of the liquid extraction section is exposed on the side of the collection body; The rotating part and the liquid suction part are disposed at an interval within the collection body, and the insertion port and the liquid suction port are both disposed on the same side of the collection body.

2. The micro-trace acquisition instrument as described in claim 1, characterized in that, The acquisition body is provided with a first movable part, which is sleeved on the plug-in port to push out the sampling component part plugged into the plug-in port.

3. The micro-trace acquisition instrument as described in claim 2, characterized in that, The first moving part includes an ejector and a first pushing member, wherein the ejector is sleeved on the insertion port; The first pushing member is slidably disposed on the surface of the collection body, and a portion of the first pushing member extends into the collection body and is connected to the ejector member.

4. The micro-trace acquisition instrument as described in any one of claims 1 to 3, characterized in that, The rotating part includes a driving part and the plug-in port. The driving part is disposed in the acquisition body, and the output end of the driving part is connected to the plug-in port. The plug-in port has an opening that faces away from the acquisition body.

5. The micro-trace acquisition instrument as described in claim 1, characterized in that, The liquid extraction part includes a liquid extraction body and a pull-out part. The liquid extraction body is hollow and located inside the sampling body. The liquid suction port is provided on the side of the liquid extraction body. The pull-out part is slidably connected to the liquid extraction body.

6. The micro-trace acquisition instrument as described in claim 5, characterized in that, The collection body is also provided with a second moving part, which is connected to the pull-out part to drive the pull-out part to move within the liquid collection body.

7. The micro-trace acquisition instrument as described in claim 6, characterized in that, The second moving part includes a second pushing member and a driven member. The driven member is slidably disposed in the collection body and connected to the pull-out part. The second pushing member is slidably connected to the surface of the collection body. The second pushing member extends into the collection body and is connected to the driven member.

8. The micro-trace acquisition instrument as described in claim 7, characterized in that, The collection body includes a collection shell and a main body. The collection shell is arranged around the main body, and the collection shell has two assembly cavities separated by the main body. The rotating part and the liquid extraction part are respectively arranged in the two assembly cavities.

9. The micro-trace acquisition instrument as described in claim 8, characterized in that, The extension of the first pusher extends into the assembly cavity and extends along the inner wall of the collection housing. The first pusher extends to the side of the ejector and is connected to the ejector. The extension of the second pusher extends into the assembly cavity and along the inner wall of the collection housing. The second pusher extends to the side of the driven member and is connected to the driven member.

10. The micro-trace acquisition instrument as described in claim 1, characterized in that, The acquisition body is equipped with a control unit, which controls the operation of the rotating part.

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