Sample suction structure with needle collision prevention function

Abstract

The utility model discloses a sample suction structure with a needle collision prevention function, belongs to the technical field of analysis equipment, and aims to solve the technical problem of experiment failure caused by needle collision, lack of a sample tube bottom detection function and lack of a bubble detection function in the prior art. The bracket assembly comprises a horizontal bottom plate and a vertical bottom plate; a probe support frame and a sample tube support frame are respectively arranged on the vertical bottom plate; the probe supporting frame is provided with a probe arm, an oscillation motor support and a vertical driving mechanism used for driving the probe arm and the oscillation motor support. A bubble detection module and a position detection module are arranged at one end of the probe arm; one end of the probe is inserted into the probe arm in a sliding manner, and the other end of the probe penetrates through the oscillation motor bracket and extends towards the sample tube supporting frame. The sample suction structure with the needle collision prevention function can be applied to various medical analysis devices, is convenient to disassemble and assemble, and has good adaptability.

Description

Technical Field

[0001] This utility model relates to the field of analytical equipment technology, specifically to a sample suction structure with anti-collision needle function. Background Technology

[0002] For medical testing equipment, probes are typically used to sample the samples to be tested, and the sample loading methods include manual single-tube loading and automatic loading.

[0003] The following problems often occur during sample loading: a) Lack of sample tube bottom detection function. Sample tubes have various parameters, and for sample tubes at different depths, incorrect parameter settings by the user or other reasons may cause the probe to fail to acquire the sample, leading to experimental failure; b) Lack of impact detection function. Incorrect sample placement or other reasons may cause impact, resulting in the probe breaking or bending; c) Lack of bubble detection function. During the experiment, after the reagent sample is completely aspirated, many bubbles often enter the sample chamber, causing equipment malfunction and experimental failure.

[0004] Therefore, there is an urgent need for a sample suction structure that can prevent collisions, automatically probe the bottom, and detect sample bubbles. Utility Model Content

[0005] The purpose of this invention is to provide a sample suction structure with anti-collision needle function to solve the technical problems in the prior art that lead to experimental failure due to collision needle, lack of sample tube bottom detection function, and lack of bubble detection function.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This utility model provides a sample suction structure with anti-collision pin function, comprising:

[0008] A support assembly, comprising a horizontal base plate and a vertical base plate; a probe support frame and a sample tube support frame are respectively provided on the vertical base plate;

[0009] The probe support frame is respectively equipped with a probe arm, an oscillating motor bracket, and a vertical drive mechanism for driving the probe arm and the oscillating motor bracket; one end of the probe arm is equipped with a bubble detection module and a position detection module;

[0010] The probe has one end slidably inserted into the probe arm, and the other end passes through the oscillating motor bracket and extends toward the sample tube support frame.

[0011] Optionally or preferably, the vertical drive mechanism includes a drive wheel, a driven wheel, a timing belt, a drive motor, and a slide rail;

[0012] The drive wheel and the driven wheel are connected by the synchronous belt, and the drive shaft of the drive motor is connected to the drive wheel;

[0013] The probe arm is slidably connected to the slide rail via connecting block one, and the oscillating motor bracket is slidably connected to the slide rail via connecting block two; connecting block one and / or connecting block two are fixedly connected to the synchronous mechanism.

[0014] Optionally or preferably, the bubble detection module includes a hose and a sensor.

[0015] The flexible tube is fitted over the upper end of the probe, and the sensor is a bubble sensor used to detect whether bubbles are generated inside the flexible tube.

[0016] Optionally or preferably, the position detection module includes an abutment block, a spring, a fixing member, a second sensor, and multiple third sensors;

[0017] The abutment block is sleeved and fixed to the outer wall of the probe, the lower end of the spring abuts against the upper end face of the abutment block, and the second sensor is fixedly connected to the probe arm and used to detect the spring pressure.

[0018] Optionally or preferably, the fixing member includes a cylindrical part and a plurality of baffles fixedly connected to the cylindrical part; a plurality of sliding grooves are provided on the outer side of the second sensor, the cylindrical part is disposed inside the second sensor and the plurality of baffles are slidably connected to the plurality of sliding grooves;

[0019] The third sensor is a slotted photoelectric sensor, and the baffle is set to correspond to the slot of the third sensor.

[0020] Optionally or preferably, a sample tube support arm is rotatably connected to the sample tube support frame, and a sample tube holder is provided on the sample tube support arm, with the sample tube holder used to place the sample tube.

[0021] Optionally or preferably, the oscillating motor bracket is provided with an oscillating motor and an oscillating plate.

[0022] Optionally or preferably, the probe support frame is provided with multiple sensors; the sensors are used to acquire position information of the probe arm and / or the oscillation motor support.

[0023] Based on the above technical solution, this utility model can produce at least the following technical effects:

[0024] (1) The sampling structure provided by this utility model is equipped with a position detection module. The sensor detects the pressure of the upper end of the probe against the spring, thereby determining whether the probe is in contact with the bottom of the sample tube, thus realizing the bottom detection function of the sample tube.

[0025] (2) When the probe continues to move towards the bottom of the sample tube, the upper end of the probe will push the fixing part to slide upward, so that the baffle of the fixing part enters the slot of the sensor three, thereby triggering the sensor three, and then judging that it is in the state of impacting the probe, and stopping the machine from working.

[0026] (3) By setting up a bubble detection module, when the reagent sample is completely aspirated, bubbles will continuously appear in the tube sleeve on the upper part of the probe and trigger sensor one. At this time, it is determined that the reagent sample has been completely aspirated and the machine stops working. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the sample suction structure with anti-collision pin function of this utility model;

[0028] Figure 2 This is a partial structural diagram of the position detection module in the sampling structure with anti-collision pin function of this utility model;

[0029] Figure 3 This is a partial exploded view of the position detection module in the sampling structure with anti-collision pin function of this utility model.

[0030] In the diagram: 10. Support assembly; 11. Horizontal base plate; 12. Vertical base plate; 13. Probe support frame; 131. Probe arm; 132. Oscillating motor support; 133. Drive wheel; 134. Driven wheel; 135. Synchronous belt; 136. Drive motor; 137. Slide rail; 138. Connecting block one; 139. Connecting block two; 1310. Hoses; 1311. Sensor one; 1312. Spring; 1313. Fixing component; 1314. Sensor two; 1315. Sensor three; 1316. Cylindrical part; 1317. Baffle; 1318. Sensor four; 1319. Slide groove; 14. Sample tube support frame; 141. Sample tube support arm; 142. Sample tube support; 20. Probe. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model; obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0032] Example

[0033] Please see Figures 1 to 3 A sample suction structure with anti-collision pin function includes a support assembly 10; the sample suction structure provided in this embodiment can be set on an experimental device with sample collection function through the support assembly 10.

[0034] Specifically, the aforementioned support assembly 10 includes a horizontal base plate 11 and a vertical base plate 12 fixed on the horizontal base plate 11; wherein a probe support frame 13 and a sample tube support frame 14 are respectively fixed on the vertical base plate 12, the probe support frame 13 is used to insert and fix the probe 20, and the sample tube support frame 14 is arranged below the probe support frame 13 and is used to place sample reagents.

[0035] Furthermore, the probe support frame 13 is provided with a probe arm 131, an oscillating motor bracket 132, and a vertical drive mechanism for driving the probe arm 131 and the oscillating motor bracket 132.

[0036] In this embodiment, the vertical drive mechanism includes a drive wheel 133, a driven wheel 134, a synchronous belt 135, a drive motor 136, and a slide rail 137. The drive wheel 133 and the driven wheel 134 are connected by the synchronous belt 135, and the drive shaft of the drive motor 136 can be connected to the drive wheel 133 via a coupling. The probe arm 131 is slidably connected to the slide rail 137 via a first connecting block 138, and the oscillating motor bracket 132 is slidably connected to the slide rail 137 via a second connecting block 139. The first connecting block 138 is fixedly connected to the synchronous belt 135. It is understood that the drive motor 136 drives the drive wheel 133 to rotate, the drive wheel 133 drives the driven wheel 134 to rotate via the synchronous belt 135, and the synchronous belt 135 drives the first connecting block 138 and the probe arm 131 to complete the vertical movement.

[0037] In order to determine whether the probe 20 is in contact with the bottom of the sample tube and to avoid collision, a position detection module is provided at one end of the probe arm 131 in this embodiment.

[0038] Specifically, the aforementioned position detection module includes an abutment block fixed to the upper part of the probe 20, a spring 1312 disposed on the upper part of the abutment block, a fixing member 1313 sleeved on the outside of the spring 1312, a second sensor 1314 covering the outside of the fixing member 1313, and two third sensors 1315 fixed to the upper part of the probe arm 131; wherein the fixing member 1313 includes a cylindrical part 1316 and two baffles 1317 fixedly connected to the cylindrical part 1316, two sliding grooves 1319 are provided on the outer side of the second sensor 1314, the cylindrical part 1316 of the fixing member 1313 is disposed inside the second sensor 1314, and the two baffles 1317 of the fixing member 1313 are slidably disposed in the two sliding grooves 1319 of the second sensor 1314.

[0039] In actual operation, as the probe 20 moves downward, after the end of the probe 20 contacts the bottom of the sample tube, the abutting part at the upper end of the probe 20 applies an upward pressure to the spring 1312. At this time, the spring 1312 is in a slightly compressed state. When the sensor 2 1314 detects the pressure from the spring 1312, it determines that the probe 20 is in contact with the bottom of the sample tube, thus realizing the bottom probing function of the sample tube. When the probe 20 continues to move downward, the abutting part at the upper part of the probe 20 drives the fixing part 1313 to move upward. At this time, the baffle 1317 of the fixing part 1313 moves upward and triggers the sensor 3 1315. At this time, it is determined to be in the state of impact, and the machine stops working.

[0040] In this embodiment, the aforementioned sensor 1315 is a slot-shaped sensor. When the baffle 1317 enters the slot of the slot-shaped sensor, the sensor is triggered.

[0041] To prevent foam from entering the sample chamber after the reagent sample has been drawn up, thus causing abnormal detection, a bubble detection module is also provided on the probe arm 131 in this embodiment.

[0042] Specifically, the bubble detection module includes a flexible tube 1310 sleeved on the upper end of the probe 20 and a sensor 1311 fixed on the probe arm 131; wherein the sensor 1311 is a bubble sensor. One end of the probe 20 is inserted into the probe arm 131, and the other end passes through the oscillating motor bracket 132 and extends towards the sample tube support frame 14.

[0043] In actual operation, when the reagent sample is completely drawn up, foam will be generated in the tubing 1310. At this time, after the sensor 1311 detects the foam, it determines that the reagent sample has been drawn up and stops the machine from working.

[0044] In this embodiment, a sample tube support arm 141 is rotatably connected to the sample tube support frame 14 via a rotating shaft, and a sample tube holder 142 is provided on the sample tube support arm 141. The sample tube holder 142 is used to place reagent sample tubes.

[0045] In this embodiment, the oscillating motor support 132 is provided with an oscillating motor and an oscillating plate, which act on the probe 20 to ensure sufficient sample contact and prevent sample blockage, etc., which is similar to the function of the oscillating structure in the medical analyzer device in the prior art, and will not be described in detail here.

[0046] In addition, in this embodiment, at least one sensor 1318 is provided on the probe support frame 13, which is used to obtain the position information of the probe arm 131 or the oscillation motor support 132.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sample suction structure with anti-collision pin function, characterized in that, include: A support assembly (10) includes a horizontal base plate (11) and a vertical base plate (12); a probe support frame (13) and a sample tube support frame (14) are respectively provided on the vertical base plate (12); a probe arm (131), an oscillating motor support frame (132), and a vertical drive mechanism for driving the probe arm (131) and the oscillating motor support frame (132) are respectively provided on the probe arm (131); a bubble detection module and a position detection module are provided at one end of the probe arm (131); The probe (20) has one end slidably inserted into the probe arm (131) and the other end passes through the oscillating motor bracket (132) and extends toward the sample tube support frame (14).

2. The sample suction structure with anti-collision pin function according to claim 1, characterized in that, The vertical drive mechanism includes a drive wheel (133), a driven wheel (134), a timing belt (135), a drive motor (136), and a slide rail (137). The drive wheel (133) and the driven wheel (134) are connected by the synchronous belt (135), and the drive shaft of the drive motor (136) is connected to the drive wheel (133). The probe arm (131) is slidably connected to the slide rail (137) via connecting block one (138), and the oscillating motor bracket (132) is slidably connected to the slide rail (137) via connecting block two (139); the connecting block one (138) and / or connecting block two (139) are fixedly connected to the synchronous belt (135).

3. The sample suction structure with anti-collision pin function according to claim 1, characterized in that, The bubble detection module includes a hose (1310) and a sensor (1311). The flexible tube (1310) is sleeved on the upper end of the probe (20), and the sensor (1311) is a bubble sensor and is used to detect whether bubbles are generated inside the flexible tube (1310).

4. The sample suction structure with anti-collision pin function according to claim 1, characterized in that, The position detection module includes an abutment block, a spring (1312), a fixing member (1313), a second sensor (1314), and multiple third sensors (1315). The abutment block is sleeved and fixed on the outer wall of the probe (20), the lower end of the spring (1312) abuts against the upper end face of the abutment block, and the second sensor (1314) is fixedly connected to the probe arm (131) and used to detect the pressure of the spring (1312).

5. The sample suction structure with anti-collision pin function according to claim 4, characterized in that, The fixing member (1313) includes a cylindrical part (1316) and a plurality of baffles (1317) fixedly connected to the cylindrical part (1316); the sensor two (1314) has a plurality of sliding grooves (1319) on its outer side, the cylindrical part (1316) is disposed inside the sensor two (1314) and the plurality of baffles (1317) are slidably connected to the plurality of sliding grooves (1319); The third sensor (1315) is a slotted photoelectric sensor, and the baffle (1317) is set to correspond to the slot of the third sensor (1315).

6. The sample suction structure with anti-collision pin function according to claim 1, characterized in that, The sample tube support frame (14) is rotatably connected to a sample tube support arm (141), and a sample tube holder (142) is provided on the sample tube support arm (141). The sample tube holder (142) is used to place the sample tube.

7. The sample suction structure with anti-collision pin function according to claim 1, characterized in that, The oscillating motor bracket (132) is equipped with an oscillating motor and an oscillating plate.

8. The sample suction structure with anti-collision pin function according to claim 1, characterized in that, The probe support frame (13) is provided with multiple sensors (1318); the sensors (1318) are used to obtain the position information of the probe arm (131) and / or the oscillation motor bracket (132).

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