A multi-functional manual sampling rack

Abstract

The present invention discloses a multifunctional manual sampling rack, which comprises a housing, a sampling assembly and a cam. The sampling assembly includes a rotating shaft, a connecting frame, a slider, a compression spring, a push rod and a sampling needle. The housing is rotatably connected to the cam. A guiding groove is provided on the connecting frame, and the compression spring is arranged in the guiding groove. One end of the push rod is fixedly provided with the slider, and the other end of the push rod is provided with a connecting head which is provided with an avoidance hole. A hollow channel is provided on the rotating shaft, and a through hole is provided on the cam. A fixed boss is provided on one side of the housing facing the cam, and a movable boss is provided on one side of the slider facing the cam. A sliding groove for the movable boss to slide is provided on the housing. The cam is provided with a first arc groove, a second arc groove, a first straight groove and a second straight groove. By adopting the present invention, different detection reagents can be extracted. Since the sampling needle can be communicated with a cleaning agent, it can ensure that the reagent is not contaminated and the detection accuracy is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical supplies, and particularly relates to a multifunctional manual sampling rack. Background Art

[0002] Blood gas electrolyte analyzers are instruments used to detect the content of trace elements in samples. There are various types of samples, but generally, they can be divided into three feeding methods: syringe feeding, ampoule feeding, and capillary feeding. Among them, both syringe and ampoule feeding involve inserting a sampling needle into the reagent and sucking the reagent by the negative pressure generated inside the instrument. Since both ends of the capillary are open, if the sampling needle is inserted into the capillary, the sample will flow out from one side. Blood gas electrolyte analyzers sample the reagent through a manual sampling rack or an electric sampling rack. The existing sampling rack realizes the rotation and lifting action of the sampling needle by pulling the handle or driving by a motor. The sampling needle remains stationary. After the sample container is extended to the appropriate position, the operator clicks the screen to select sampling. However, the sampling rack can only perform the back-and-forth movement from the original position to the same sampling position. Sampling can only be executed after the operator visually confirms that the sample is in place and then clicks the screen, and it can only realize syringe and ampoule feeding. If capillary feeding needs to be realized, additional configurations are required, and the operation is cumbersome. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a multifunctional manual sampling rack that can realize the sharing of a single sampling rack for syringe feeding, ampoule feeding, and capillary feeding without additional external configurations, and at the same time realize the function of automatically extracting samples by the instrument when the samples are in place.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] A multifunctional manual sampling rack, which comprises a housing, a sampling assembly and a cam. The sampling assembly is arranged inside the housing. The sampling assembly includes a rotating shaft, a connecting frame, a slider, a compression spring, a push rod and a sampling needle. The housing is rotatably connected to the cam through the rotating shaft. The connecting frame is provided with a guiding groove that slidably cooperates with the slider. The compression spring is arranged in the guiding groove. One end of the push rod is fixedly provided with the slider, and the other end of the push rod is provided with a connecting head. The bottom end of the compression spring abuts against the slider. The connecting head is provided with an avoidance hole. The rotating shaft is provided with a hollow channel. One end of the sampling needle is movably inserted into the avoidance hole, and the other end of the sampling needle is connected to the hollow channel. The cam is provided with a through hole that cooperates with the hollow channel. One side of the housing facing the cam is provided with a fixed convex platform, and one side of the slider facing the cam is provided with a movable convex platform. The housing is provided with a sliding groove for the movable convex platform to slide. The cam is provided with a first arc groove, a second arc groove, a first straight groove and a second straight groove. The second arc groove, the first straight groove and the second straight groove are connected. When the housing rotates a first angle relative to the cam, the fixed convex platform moves from a first initial position to a first intermediate position, and the movable convex platform moves from a second initial position to a second intermediate position. At this time, the sliding groove is parallel and opposite to the first straight groove, and the push rod is pushed to a first liquid extraction position to realize liquid extraction. When the housing rotates a second angle relative to the cam, the fixed convex platform moves from the first intermediate position to a first terminal position, and the movable convex platform moves from the second intermediate position to a second terminal position. At this time, the sliding groove is parallel and opposite to the second straight groove, and the push rod is pushed to a second liquid extraction position to realize liquid extraction.

[0006] As a preferred solution of the present invention, magnets are provided on both the fixed convex platform and the movable convex platform.

[0007] As a preferred solution of the present invention, a PCB board is provided on the side of the cam away from the housing.

[0008] As a preferred solution of the present invention, Hall sensors are provided at positions corresponding to the first initial position, the first intermediate position, the first terminal position, the first liquid extraction position and the second liquid extraction position on the PCB board respectively.

[0009] As a preferred solution of the present invention, the housing includes a front cover and a rear cover, and the front cover and the rear cover are connected by a connecting rod.

[0010] As a preferred solution of the present invention, the sampling assembly further includes a torsion spring and a torsion spring mounting seat. One end of the torsion spring mounting seat is rotatably connected to the rear cover, and the other end of the torsion spring mounting seat is connected to the slider. The torsion spring is mounted on the torsion spring mounting seat. One end of the torsion spring is connected to the torsion spring mounting seat, and the other end of the torsion spring is connected to the connecting frame.

[0011] As a preferred embodiment of the present invention, the connector is a sealing rubber plug.

[0012] As a preferred embodiment of the present invention, a handle is provided on the rear cover.

[0013] Implementing a multifunctional manual sampling rack provided by the present invention, compared with the prior art, its beneficial effects are as follows:

[0014] Before the instrument extracts the detection reagent, the fixed boss is in the first initial position, and the movable boss is in the second initial position. In this state, according to actual needs, the sampling needle can be connected to the calibration solution or cleaning solution or quality control solution to calibrate the instrument or clean the sampling tube or detect the performance of the instrument; when it is necessary to detect the first reagent, the rotating housing rotates a first angle relative to the cam, the fixed boss moves from the first initial position to the first intermediate position, and the movable boss moves from the second initial position to the second intermediate position. At this time, the chute is parallel to the first straight groove, and the sampling personnel push the push rod to the first liquid extraction position. The sampling needle can extract the first reagent and transmit it to the inside of the instrument through the hollow channel for detection; when it is necessary to detect the second reagent, the rotating housing rotates a second angle relative to the cam, the fixed boss moves from the first intermediate position to the first terminal position, and the movable boss moves from the second intermediate position to the second terminal position. At this time, the chute is parallel to the second straight groove, and the sampling personnel push the push rod to the second liquid extraction position. The sampling needle can extract the second reagent and transmit it to the inside of the instrument through the hollow channel for detection; thus, the sampling rack can achieve multi-point positioning, and multiple samples can be extracted on the same sampling rack, with strong practicability;

[0015] In addition, before detecting the second reagent, the rotating housing rotates the fixed boss to the first initial position and the movable boss to the second initial position, connects the sampling needle to the cleaning agent, and cleans the sampling tube, which can prevent contamination between different detection reagents and ensure the accuracy of detection. By adopting the present invention, different reagents can be extracted on the same sampling rack. Since the sampling needle can be connected to the cleaning agent, the reagent can be ensured not to be contaminated, and the detection accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0017] Figure 1 is a schematic structural diagram of a multifunctional manual sampling rack provided by an embodiment of the present invention;

[0018] Figure 2 is a schematic structural diagram of the housing;

[0019] Figure 3 is a schematic structural diagram of the sampling assembly;

[0020] Figure 4 It is a schematic structural view of another viewing direction of the sampling assembly;

[0021] Figure 5 It is a schematic structural view of the push rod in a pushed state;

[0022] Figure 6 It is a schematic structural view of the cam.

[0023] Markings in the figure:

[0024] Shell 1; Sampling assembly 2; Cam 3; Rotating shaft 4; Connecting frame 5; Slide block 6; Compression spring 7; Push rod 8; Sampling needle 9; Guide groove 10; Connecting head 11; Fixed boss 12; Movable boss 13; Slide groove 14; First arc groove 15; Second arc groove 16; First straight groove 17; Second straight groove 18; Front cover 19; Rear cover 20; Connecting rod 21; Torsion spring 22; Torsion spring mounting seat 23; Handle 24; First initial position A1; First intermediate position B1; First terminal position C1; Second initial position A2; Second intermediate position B2; Second terminal position C2; First liquid extraction level D1; Second liquid extraction level D2. Specific embodiments

[0025] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. It should be understood that the present invention uses the terms "first", "second", etc. to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0027] Such as Figures 1 to 6As shown in the figure, a preferred embodiment of the present invention provides a multifunctional manual sampling rack, which includes a housing 1, a sampling assembly 2 and a cam 3. The sampling assembly 2 is arranged inside the housing 1. The sampling assembly 2 includes a rotating shaft 4, a connecting frame 5, a slider 6, a compression spring 7, a push rod 8 and a sampling needle 9. The housing 1 is rotatably connected to the cam 3 through the rotating shaft 4. A guiding groove 10 that slidably cooperates with the slider 6 is provided on the connecting frame 5. The compression spring 7 is arranged in the guiding groove 10. One end of the push rod 8 is fixedly provided with the slider 6, and the other end of the push rod 8 is provided with a connecting head 11. The bottom end of the compression spring 7 abuts against the slider 6. An avoidance hole is provided on the connecting head 11. A hollow channel is provided on the rotating shaft 4. One end of the sampling needle 9 is movably inserted into the avoidance hole, and the other end of the sampling needle 9 is connected to the hollow channel. A through hole that cooperates with the hollow channel is provided on the cam 3. A fixed boss 12 is provided on one side of the housing 1 facing the cam 3. An active boss 13 is provided on one side of the slider 6 facing the cam 3. A sliding groove 14 for the active boss 13 to slide is provided on the housing 1. A first arc groove 15, a second arc groove 16, a first straight groove 17 and a second straight groove 18 are provided on the cam 3. The second arc groove 16, the first straight groove 17 and the second straight groove 18 are connected. When the housing 1 rotates a first angle relative to the cam 3, the fixed boss 12 moves from a first initial position A1 to a first intermediate position B1, and the active boss 13 moves from a second initial position A2 to a second intermediate position B2. At this time, the sliding groove 14 is parallel to and opposite the first straight groove 17, and the push rod 8 is pushed to a first liquid extraction level D1 to achieve liquid extraction. When the housing 1 rotates a second angle relative to the cam 3, the fixed boss 12 moves from the first intermediate position B1 to a first terminal position C1, and the active boss 13 moves from the second intermediate position B2 to a second terminal position C2. At this time, the sliding groove 14 is parallel to and opposite the second straight groove 18, and the push rod 8 is pushed to a second liquid extraction level D2 to achieve liquid extraction.

[0028] Before the instrument extracts the detection reagent, the fixed boss 12 is in the first initial position A1, and the movable boss 13 is in the second initial position A2. In this state, according to actual needs, the sampling needle 9 can be connected to the calibration solution, cleaning solution or quality control solution to calibrate the instrument, clean the sampling tube or detect the performance of the instrument; when it is necessary to detect the first reagent, the rotating housing 1 rotates a first angle relative to the cam 3, the fixed boss 12 moves from the first initial position A1 to the first intermediate position B1, and the movable boss 13 moves from the second initial position A2 to the second intermediate position B2. At this time, the chute 14 is parallel to and opposite the first straight groove 17. The sampling personnel push the push rod 8 to the first liquid extraction position D1, and the sampling needle 9 can extract the first reagent and transmit it to the inside of the instrument through the hollow channel for detection; when it is necessary to detect the second reagent, the rotating housing 1 rotates a second angle relative to the cam 3, the fixed boss 12 moves from the first intermediate position B1 to the first terminal position C1, and the movable boss 13 moves from the second intermediate position B2 to the second terminal position C2. At this time, the chute 14 is parallel to and opposite the second straight groove 18. The sampling personnel push the push rod 8 to the second liquid extraction position D2, and the sampling needle 9 can extract the second reagent and transmit it to the inside of the instrument through the hollow channel for detection; thus, the sampling rack can achieve multi-point positioning, and multiple samples can be extracted on the same sampling rack, with strong practicability;

[0029] In addition, before detecting the second reagent, the rotating housing 1 is rotated to make the fixed boss 12 rotate to the first initial position and the movable boss 13 rotate to the second initial position, and the sampling needle 9 is connected to the cleaning agent to clean the sampling tube, which can prevent contamination between different detection reagents and ensure the accuracy of detection. By adopting the present invention, different reagents can be extracted on the same sampling rack. Since the sampling needle 9 can be connected to the cleaning agent, the reagent can be ensured not to be contaminated, and the detection accuracy is high.

[0030] Exemplarily, magnets are provided on both the fixed boss 12 and the movable boss 13.

[0031] Exemplarily, a PCB board is provided on the side of the cam 3 away from the housing 1, and Hall sensors are provided at positions corresponding to the first initial position A1, the first intermediate position B1, the first terminal position C1, the first liquid extraction position D1 and the second liquid extraction position D2 on the PCB board. Thus, the magnet can cooperate with the Hall sensor to generate an electrical signal and provide it to the instrument. When reaching the corresponding position, the instrument can receive the electrical signal and the corresponding position indicator light will light up to ensure the accuracy of the operation.

[0032] Exemplarily, the housing 1 includes a front cover 19 and a rear cover 20, and the front cover 19 and the rear cover 20 are connected by a connecting rod 21.

[0033] Exemplarily, the sampling assembly 2 further includes a torsion spring 22 and a torsion spring mounting seat 23. One end of the torsion spring mounting seat 23 is rotatably connected to the rear cover 20, and the other end of the torsion spring mounting seat 23 is connected to the slider 6. The torsion spring is mounted on the torsion spring mounting seat 23. One end of the torsion spring 22 is connected to the torsion spring mounting seat 23, and the other end of the torsion spring 22 is connected to the connecting frame 5. By providing the torsion spring 22, the rotation of the housing 1 can be made smoother, ensuring that the fixed boss 12 and the movable boss 13 can move to their corresponding positions smoothly, which is convenient for operation.

[0034] Exemplarily, the connecting head 11 is a sealing rubber plug. When the fixed boss 12 is in the first initial gear position and the movable boss 13 is in the second initial gear position, the sampling rack can communicate with the distribution valve below the instrument. The sealing rubber plug deforms under the action of the torsion spring 22 and the compression spring 7, and the push rod 8 can form a sealed cavity with the distribution valve, ensuring that the calibration liquid or cleaning liquid or quality control liquid can be smoothly transported into the instrument and preventing biological contamination.

[0035] Exemplarily, in order to facilitate the sampler to rotate the housing 1, a handle 24 is provided on the rear cover 20.

[0036] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0037] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A multi-functional manual sampling rack, characterized in that, It includes a housing, a sampling assembly and a cam. The sampling assembly is arranged inside the housing. The sampling assembly includes a rotating shaft, a connecting frame, a slider, a compression spring, a push rod and a sampling needle. The housing is rotatably connected to the cam through the rotating shaft. A guiding groove slidably matched with the slider is provided on the connecting frame. The compression spring is arranged in the guiding groove. One end of the push rod is fixedly provided with the slider, and the other end of the push rod is provided with a connecting head. The bottom end of the compression spring abuts against the slider. An avoidance hole is provided on the connecting head. A hollow channel is provided on the rotating shaft. One end of the sampling needle is movably inserted into the avoidance hole, and the other end of the sampling needle is connected to the hollow channel. A through hole matched with the hollow channel is provided on the cam. A fixed boss is provided on one side of the housing facing the cam, and a movable boss is provided on one side of the slider facing the cam. A sliding groove for the movable boss to slide is provided on the housing. The cam is provided with a first arc groove, a second arc groove, a first straight groove and a second straight groove. The second arc groove, the first straight groove and the second straight groove are communicated. When the housing rotates a first angle relative to the cam, the fixed boss moves from a first initial position to a first intermediate position, and the movable boss moves from a second initial position to a second intermediate position. At this time, the sliding groove is parallel and opposite to the first straight groove, and the push rod is pushed to a first liquid extraction position to realize liquid extraction. When the housing rotates a second angle relative to the cam, the fixed boss moves from the first intermediate position to a first terminal position, and the movable boss moves from the second intermediate position to a second terminal position. At this time, the sliding groove is parallel and opposite to the second straight groove, and the push rod is pushed to a second liquid extraction position to realize liquid extraction.

2. The multifunctional manual sampling rack according to claim 1, wherein Magnets are provided on both the fixed boss and the movable boss.

3. A multifunctional manual sampling rack according to claim 1, characterized in that, A PCB board is provided on one side of the cam away from the housing.

4. The multifunctional manual sampling rack according to claim 3, characterized in that, Hall sensors are respectively provided at positions corresponding to the first initial position, the first intermediate position, the first terminal position, the first liquid extraction position and the second liquid extraction position on the PCB board.

5. A multifunctional manual sampling rack according to claim 1, characterized in that, The housing includes a front cover and a rear cover, and the front cover and the rear cover are connected by a connecting rod.

6. The multifunctional manual sampling rack according to claim 5, characterized in that, The sampling assembly further includes a torsion spring and a torsion spring mounting seat. One end of the torsion spring mounting seat is rotatably connected to the rear cover, and the other end of the torsion spring mounting seat is connected to the slider. The torsion spring is mounted on the torsion spring mounting seat. One end of the torsion spring is connected to the torsion spring mounting seat, and the other end of the torsion spring is connected to the connecting frame.

7. A multifunctional manual sampling rack according to claim 1, characterized in that, The connecting head is a sealing rubber plug.

8. A multi-functional manual sampling rack according to claim 5, characterized in that, A handle is provided on the rear cover.

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