Sample detecting and discarding device

Abstract

The utility model discloses a sample detecting and discarding device. The sample detecting and discarding device comprises a moving needle assembly, a discarding disc assembly and a uniform mixing assembly, the moving needle assembly comprises a needle driving mechanism, a detection needle and a waste liquid needle; the needle driving mechanism is used for controlling the detection needle and the waste liquid needle to move in the Z-axis direction; the discarding disc assembly sequentially comprises a rotating disc, a supporting ring and a disc driving mechanism from top to bottom, the disc driving mechanism drives the rotating disc to rotate, and the supporting ring is fixed to the supporting frame; a plurality of working positions are arranged on the turntable, and a discarding opening is formed in the supporting ring; the uniform mixing assembly comprises a uniform mixing driving mechanism and a uniform mixing mechanism, and the uniform mixing driving mechanism is used for controlling the uniform mixing mechanism to move up and down; the uniform mixing assembly is used for uniformly mixing a to-be-detected sample placed on the working position of the rotating disc, and the discarding disc assembly is matched with the moving needle assembly through rotation of the rotating disc to realize sample detection and waste liquid separation and discarding. The sample detecting and discarding device provided by the utility model has the advantages of compact structure, reasonable time sequence design, high working efficiency and the like.

Description

Technical Field

[0001] This utility model relates to the field of medical testing equipment technology, and more specifically to a sample testing and discarding device. Background Technology

[0002] The invention application with application number 202310526940.3 discloses a fully automated bacterial endotoxin detection device and method, comprising: a sample addition and disposal station for positioning or discarding pipette tips; a micropipette for picking up and placing pipette tips and performing sample aspiration and dispensing operations; a dispensing drive mechanism disposed on one side of the sample addition and disposal station for driving the micropipette; an incubation unit for reacting test samples; a sample and reagent tray for storing samples and test reagents; a disposable pipette tip box for storing unused pipette tips; a disposable reaction cup box for storing unused disposable reaction cups; a gripping and placing mechanism disposed on the other side of the sample addition and disposal station, having a gripping part; and a detection module for detecting the reaction cups in the incubation unit, wherein the detection module is a replaceable structure.

[0003] Existing detection and disposal devices typically have limited functionality, requiring multiple separate steps for sample loading, detection, solid-liquid separation, and waste disposal. This not only results in low work efficiency but also in a large footprint, leading to resource waste. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a sample detection and disposal device, which has a compact structure, reasonable timing design and high working efficiency.

[0005] The technical solution adopted by this utility model to solve the technical problem is: a sample detection and discarding device, including a moving needle assembly, a discarding tray assembly and a mixing assembly;

[0006] The moving needle assembly includes a needle drive mechanism, a detection needle, and a waste liquid needle; the needle drive mechanism is used to control the movement of the detection needle and the waste liquid needle in the Z-axis direction.

[0007] The discarding tray assembly comprises, from top to bottom, a turntable, a support ring, and a tray drive mechanism. The tray drive mechanism drives the turntable to rotate, and the support ring is fixed on a support frame. The turntable has several working positions, and the support ring has a discarding port. The discarding tray assembly is used for loading and discarding samples.

[0008] The mixing assembly includes a mixing drive mechanism and a mixing mechanism, wherein the mixing drive mechanism is used to control the mixing mechanism to move up and down.

[0009] The mixing component is used to mix the sample to be tested placed on the turntable working position. The discarding tray component, through the rotation of the turntable, cooperates with the moving needle component to realize sample detection, waste liquid separation and disposal.

[0010] Furthermore, the needle driving mechanism includes a base, a needle stepper motor, a needle timing belt, a moving block, an adapter block, and a needle linear guide rail. The needle stepper motor drives the adapter block to slide on the needle linear guide rail via the needle timing belt. The adapter block is connected to the moving block. The two ends of the moving block are connected to the detection needle and the waste liquid needle respectively via a detection needle support seat and a waste liquid needle support seat.

[0011] Furthermore, the upper part of the base is provided with a needle zero position optocoupler, and the side of the moving block is provided with a needle zero position baffle; the side of the detection needle support is provided with an anti-collision optocoupler; a buffer spring is provided between the waste liquid needle and the waste liquid needle support, and a collision needle spring is provided between the detection needle and the detection needle support.

[0012] Furthermore, the turntable has four working positions evenly distributed, namely a detection position, a solid-liquid separation position, a detection sample loading position, and a discard sample loading position; the detection position and the detection sample loading position are arranged opposite to each other, and both the detection position and the detection sample loading position are equipped with reaction vessel sleeves; the solid-liquid separation position and the discard sample loading position are arranged opposite to each other, and both the solid-liquid separation position and the discard sample loading position are equipped with positioning sleeves.

[0013] Furthermore, the positioning sleeve is vertically continuous, and when the reaction container inside the positioning sleeve moves to above the disposal port, it automatically falls and is discarded; the reaction container sleeve is not vertically continuous, and flat sections are provided on both sides of the reaction container sleeve, and a sleeve pressure plate is provided above the turntable to prevent the reaction container sleeve from falling out.

[0014] Furthermore, the disk drive mechanism includes a disk stepper motor and a rotating shaft. The two ends of the rotating shaft are respectively connected to the disk stepper motor and the turntable, and the disk stepper motor drives the turntable to rotate through the rotating shaft.

[0015] Furthermore, the rotating shaft is equipped with a code disk and a disk zero-position baffle; the code disk and disk zero-position baffle, together with the corresponding code disk optocoupler and disk zero-position optocoupler, ensure the zero-position detection and motion accuracy of the rotating disk.

[0016] Furthermore, the support ring is fixedly connected above the support frame by a number of support columns; a detachable wear-resistant pad is provided inside the support ring; a break is provided on the support ring at the sampling position corresponding to the turntable, and the break position is used for the mixing mechanism in the mixing assembly to move up and down; a discard port is provided on the support ring between the solid-liquid separation position and the sampling position corresponding to the turntable.

[0017] Furthermore, the mixing drive mechanism includes a mixing drive motor, a mixing synchronous belt, and a mixing linear guide rail. The mixing mechanism includes a mixing sleeve, a mixing motor, and a mixing motor base. The mixing sleeve and the mixing motor are fixed to both sides of the mixing motor base. The mixing motor base is connected to the mixing synchronous belt. The mixing mechanism slides along the mixing linear guide rail under the drive of the mixing synchronous belt.

[0018] Furthermore, the mixing sleeve is provided with an eccentric hole; the bottom of the mixing linear guide is provided with a mixing zero-position optocoupler.

[0019] The beneficial effects of this utility model are as follows: Compared with the prior art, the sample detection and disposal device provided by this utility model has the advantages of compact structure and high working efficiency. The turntable rotates in two steps in one go, which can realize the sample loading, sample detection, solid-liquid separation, sample loading of the disposal container and disposal of the disposal container. The detection sampling and solid-liquid separation of the sample to be discarded can be carried out simultaneously. The device can also realize the sample re-testing function. In addition, the reaction container disposal structure of this device is simple and reliable, and there is no failure rate introduced by electrical soft control. The timing arrangement is reasonable, which greatly saves the equipment area and improves the equipment working efficiency. Attached Figure Description

[0020] Figure 1 A schematic diagram of the detection and disposal device provided by this utility model.

[0021] Figure 2 This is a schematic diagram of the moving needle assembly in the detection and discarding device provided by this utility model.

[0022] Figure 3 This is a three-dimensional structural diagram of the discard tray assembly in the detection and discarding device provided by this utility model.

[0023] Figure 4 This is a schematic diagram of the structure of the discard tray assembly in the detection and discarding device provided by this utility model.

[0024] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure along the AA direction.

[0025] Figure 6 A three-dimensional structural diagram of the mixing component in the detection and discarding device provided by this utility model.

[0026] Among them, 1-Moving needle assembly; 101-Detection needle; 102-Detection needle support; 103-Anti-collision optocoupler; 104-Moving block; 105-Adapter block; 106-Needle linear guide; 107-Tension block; 108-Needle zero-position optocoupler; 109-Needle zero-position baffle; 110-Waste liquid needle support; 111-Needle synchronous belt; 112-Needle stepper motor; 113-Base; 114-Waste liquid needle; 2-Discard tray assembly; 201-Detection position; 202-Turntable; 203-Discard sample loading position; 204-Support ring; 205-Support frame; 206-Break; 207-Panel stepper motor. Motor; 208-Sample loading position; 209-Support column; 210-Discard port; 211-Solid-liquid separation position; 212-Positioning sleeve; 213-Disc zero-position baffle; 214-Disc zero-position optocoupler; 215-Flat position; 216-Reaction vessel sleeve; 217-Sleeve pressure plate; 218-Rotating shaft; 219-Code disk optocoupler; 220-Code disk; 3-Mixing assembly; 301-Mixing sleeve; 302-Mixing motor base; 303-Mixing motor; 304-Mixing drive motor; 305-Mixing zero-position optocoupler; 306-Mixing linear guide; 307-Mixing synchronous belt; 308-Eccentric hole. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0028] Example

[0029] like Figure 1 As shown, a sample detection and disposal device includes a moving needle assembly 1, a disposal tray assembly 2, and a mixing assembly 3. The moving needle assembly 1 includes a needle driving mechanism, a detection needle 101, and a waste liquid needle 114. The needle driving mechanism is used to control the movement of the detection needle 101 and the waste liquid needle 114 in the Z-axis direction. The disposal tray assembly 2 includes, from top to bottom, a turntable 202, a support ring 204, and a tray driving mechanism. The tray driving mechanism drives the turntable 202 to rotate, and the support ring 204 is fixed on a support frame 205. The turntable 202 is provided with several working positions, and the support ring 204 is provided with a discard port 210; the discard tray assembly 2 is used to load and discard samples; the mixing assembly 3 includes a mixing drive mechanism and a mixing mechanism, the mixing drive mechanism is used to control the mixing mechanism to move up and down; the mixing assembly 3 is used to mix the samples to be tested placed on the working positions of the turntable 202, and the discard tray assembly 2, through the rotation of the turntable 202, cooperates with the moving needle assembly 1 to realize sample detection and waste liquid separation and discarding.

[0030] like Figure 2 As shown, the needle drive mechanism includes a base 113, a needle stepper motor 112, a needle timing belt 111, a moving block 104, a connecting block 105, and a needle linear guide rail 106. The needle stepper motor 112 drives the connecting block 105 to slide on the needle linear guide rail 106 via the needle timing belt 111. The connecting block 105 is connected to the moving block 104. The two ends of the moving block 104 are connected to the detection needle 101 and the waste liquid needle 114 respectively via the detection needle support seat 102 and the waste liquid needle support seat 110. During operation, the needle stepper motor 112 drives the movement of the detection needle 101 and the waste liquid needle 114 via the needle timing belt 111. The upper end of the needle timing belt 111 is mounted on the tensioning block 107, and the tension of the needle timing belt 111 is adjusted by screws on the tensioning block 107. The detection needle 101 and the waste liquid needle 114 are mounted on the same moving block 104, so under the drive of the needle stepper motor 112, the detection needle 101 and the waste liquid needle 114 can move up and down simultaneously. A needle zero-position optocoupler 108 is provided on the upper part of the base 113, and a needle zero-position baffle 109 is provided on the side of the moving block 104. The two work together to achieve zero-position detection. The side of the detection needle support 102 is provided with an anti-collision optocoupler 103; a buffer spring is provided between the waste liquid needle 114 and the waste liquid needle support 110 to prevent the waste liquid needle 114 from hitting the bottom and damaging the needle tip and the bottom of the reaction container during solid-liquid separation; a collision spring is provided between the detection needle 101 and the detection needle support 102, which can trigger the anti-collision optocoupler 103 when the detection needle 101 is abnormally pushed up to realize collision detection.

[0031] like Figure 3 As shown, the turntable 202 has four evenly distributed working positions: a detection position 201, a solid-liquid separation position 211, a sample loading position 208, and a sample discarding position 203. The detection position 201 and the sample loading position 208 are positioned opposite each other, and both are equipped with reaction vessel sleeves 216. The solid-liquid separation position 211 and the sample discarding position 203 are positioned opposite each other, and both are equipped with positioning sleeves 212. The reaction vessel to be tested is placed into the reaction vessel sleeve 216 using a gripper, and the reaction vessel to be discarded is placed into the positioning sleeve 212. The positioning sleeve 212 is vertically continuous, and when the reaction container inside the positioning sleeve 212 moves to above the disposal port 210, it will automatically fall and be discarded; the reaction container sleeve 216 is not vertically continuous, and the reaction container sleeve 216 has flat sections 215 on both sides to prevent the reaction container from rotating; a sleeve pressure plate 217 is provided above the turntable 202 to prevent the reaction container sleeve 216 from falling out.

[0032] like Figure 4 and 5 As shown, the disk drive mechanism includes a disk stepper motor 207 and a rotating shaft 218. The two ends of the rotating shaft 218 are connected to the disk stepper motor 207 and the turntable 202, respectively. The disk stepper motor 207 drives the turntable 202 to rotate via the rotating shaft 218. The rotating shaft 218 is equipped with a code disk 220 and a disk zero-position baffle 213. The code disk 220 and the disk zero-position baffle 213, in conjunction with corresponding code disk optocouplers 219 and disk zero-position optocouplers 214, ensure the zero-position detection and motion accuracy of the turntable 202.

[0033] like Figure 3 As shown, the support ring 204 is fixedly connected above the support frame 205 by several support columns 209; a detachable wear-resistant pad is provided inside the support ring 204, and the lower end of the reaction container to be discarded located in the positioning sleeve 212 is supported by the support ring 204. The wear-resistant pad is made of Teflon material to reduce friction and prevent the reaction container from being excessively worn and generating a large amount of debris. During use, the wear-resistant pad can be replaced periodically; a break 206 is provided on the support ring 204 at the detection sample loading position 208 of the turntable 202. The position of the break 206 is used for the mixing mechanism in the mixing assembly 3 to move up and down; a discard port 210 is provided on the support ring 204 between the solid-liquid separation position 211 and the detection sample loading position 208 of the turntable 202. When the reaction container in the positioning sleeve 212 moves above the discard port 210, it will automatically fall and be discarded; since the protective sleeve 216 is not vertically continuous, the reaction container in the protective sleeve 216 will not fall when it moves above the discard port 210.

[0034] like Figure 6 As shown, the mixing drive mechanism includes a mixing drive motor 304, a mixing synchronous belt 307, and a mixing linear guide rail 306. The mixing mechanism includes a mixing sleeve 301, a mixing motor 303, and a mixing motor base 302. The mixing sleeve 301 and the mixing motor 303 are fixed to both sides of the mixing motor base 302. The mixing motor base 302 is connected to the mixing synchronous belt 307. The mixing mechanism slides along the mixing linear guide rail 306 under the drive of the mixing synchronous belt 307. The mixing sleeve 301 has an eccentric hole 308, which allows the reaction vessel sleeve 216 to follow the eccentric oscillation within the eccentric hole 308, thereby achieving the mixing function. The bottom of the mixing linear guide rail 306 has a mixing zero-position optocoupler 305. Through calculation, the mixing mechanism's stroke is designed to lift the reaction vessel sleeve 216 upwards without interfering with its rotation on the turntable 202 downwards.

[0035] The working principle of the above-mentioned sample detection and disposal device is as follows: The turntable 202 has four working positions (two for placing reaction container sleeves 216, and two for placing positioning sleeves 212, staggered in pairs, with the positioning sleeves 212 connected vertically). A disposal position is located on the support ring 204. The detection needle 101 and waste liquid needle 114 are mounted on the moving needle assembly 1. The turntable 202 rotates 180° in two steps each time, pausing for 1 second after each 45° rotation before rotating 135° to the designated position. After the sample to be tested is placed on the detection loading position 208, the mixing mechanism first mixes it, then rotates in two steps to the detection position 201. At this time, the reaction container originally placed at the solid-liquid separation position 211, after the waste liquid is extracted, automatically falls after pausing at the disposal port 210 during the first rotation, and then reaches the disposal loading position 203 during the second rotation. The original detection position 201 reaches the detection loading position 208 during the second rotation, where the gripper picks up the completed reaction container and reloads the sample. During testing, the moving needle assembly 1 will drive the detection needle 101 and the waste liquid needle 114 to move downwards simultaneously, completing the detection and solid-liquid separation at the same time, and then proceeding to the next cycle.

[0036] The above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model. The patent protection scope of the present utility model should be defined by the claims.

Claims

1. A sample detection discarding device, characterized by: The application relates to a multi-functional automatic sample processing device. The motion needle assembly comprises a needle driving mechanism, a detection needle and a waste liquid needle; the needle driving mechanism is used for controlling the motion of the detection needle and the waste liquid needle in the Z-axis direction; The discarding disc assembly comprises, from top to bottom, a rotating disc, a supporting ring and a disc driving mechanism; the disc driving mechanism drives the rotating disc to rotate; the supporting ring is fixed on a supporting frame; the rotating disc is provided with a plurality of working positions; the supporting ring is provided with a discarding port; the discarding disc assembly is used for loading and discarding samples; The mixing assembly comprises a mixing driving mechanism and a mixing mechanism; the mixing driving mechanism is used for controlling the up-and-down movement of the mixing mechanism; The mixing assembly is used for mixing the samples to be detected placed on the working positions of the rotating disc; the discarding disc assembly is rotated to cooperate with the motion needle assembly to realize sample detection, waste liquid separation and discarding.

2. A sample testing and discarding device as claimed in claim 1, characterized in that: The needle driving mechanism comprises a base, a needle stepping motor, a needle synchronous belt, a motion block, an adapter block and a needle linear guide rail; the needle stepping motor drives the adapter block to slide on the needle linear guide rail through the needle synchronous belt; the adapter block is connected with the motion block; the two ends of the motion block are connected with the detection needle and the waste liquid needle through a detection needle supporting seat and a waste liquid needle supporting seat respectively.

3. A sample testing discarding device as claimed in claim 2, wherein: The upper part of the base is provided with a needle zero position photoelectric coupler; the side surface of the motion block is provided with a needle zero position baffle; the side surface of the detection needle supporting seat is provided with an anti-collision photoelectric coupler; the waste liquid needle and the waste liquid needle supporting seat are provided with a buffer spring; the detection needle and the detection needle supporting seat are provided with a needle collision spring.

4. The sample testing and discarding device of claim 1, wherein: The rotating disc is uniformly provided with four working positions, namely a detection position, a solid-liquid separation position, a detection sample loading position and a discarding sample loading position; the detection position and the detection sample loading position are oppositely arranged; the detection position and the detection sample loading position are both provided with a reaction container sheath; the solid-liquid separation position and the discarding sample loading position are oppositely arranged; the solid-liquid separation position and the discarding sample loading position are both provided with a positioning sleeve.

5. A sample testing discarding device as claimed in claim 4, wherein: The positioning sleeve is through-penetrated; when the reaction container in the positioning sleeve moves to the position above the discarding port, the reaction container is automatically dropped and discarded; the reaction container sheath is not through-penetrated; the two sides of the reaction container sheath are provided with flat positions; the upper side of the rotating disc is provided with a sheath pressing plate used for preventing the reaction container sheath from being taken out.

6. The sample testing and discarding device of claim 1, wherein: The disc driving mechanism comprises a disc stepping motor and a rotating shaft; the two ends of the rotating shaft are connected with the disc stepping motor and the rotating disc respectively; the disc stepping motor drives the rotating disc to rotate through the rotating shaft.

7. A sample testing discarding device as claimed in claim 6, wherein: The rotating shaft is provided with a code disc and a disc zero position baffle; the code disc and the disc zero position baffle cooperate with corresponding code disc photoelectric couplers and disc zero position photoelectric couplers to ensure the zero position detection and motion precision of the rotating disc.

8. The sample testing and discarding device of claim 1, wherein: The supporting ring is fixedly connected above the supporting frame through a plurality of supporting columns; the supporting ring is provided with a detachable wear-resistant pad; the supporting ring is provided with a breakage position corresponding to the detection sample loading position of the rotating disc; the breakage position is used for the up-and-down movement of the mixing mechanism in the mixing assembly; the supporting ring is provided with the discarding port corresponding to the solid-liquid separation position and the detection sample loading position of the rotating disc.

9. The specimen detection and disposal device of claim 1, wherein: The mixing driving mechanism comprises a mixing driving motor, a mixing synchronous belt and a mixing linear guide rail, the mixing mechanism comprises a mixing sleeve, a mixing motor and a mixing motor base, the mixing sleeve and the mixing motor are fixed on both sides of the mixing motor base, the mixing motor base is connected with the mixing synchronous belt, and the mixing mechanism slides along the mixing linear guide rail under the driving of the mixing synchronous belt.

10. A sample testing discarding device as claimed in claim 9, wherein: An eccentric hole is arranged in the mixing sleeve, and a mixing zero position photoelectric coupler is arranged at the bottom of the mixing linear guide rail.

Images