CN215727215U

CN215727215U - Sample mixing device

Info

Publication number: CN215727215U
Application number: CN202122281641.7U
Authority: CN
Inventors: 张勇; 苑振家; 甘小锋
Original assignee: Shenzhen Dymind Biotechnology Co Ltd
Current assignee: Shenzhen Dymind Biotechnology Co Ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-02-01
Anticipated expiration: 2031-09-18

Abstract

The utility model discloses a sample blending device, which comprises a clamping jaw assembly and a first driving piece in transmission connection with the clamping jaw assembly, wherein the clamping jaw assembly comprises a clamping jaw and a second driving piece in transmission connection with the clamping jaw, the second driving piece drives the clamping jaw to open or close to grab a test tube carrying a sample to be tested, the first driving piece drives the clamping jaw assembly grabbing the test tube to swing to perform blending operation on the sample, and cable sleeves of the first driving piece and the second driving piece are provided with flexible sleeves.

Description

Sample mixing device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a sample blending device.

Background

The change of human physiology and pathology can often cause the change of blood components, and the detection and analysis of blood samples can provide the basis for diagnosis and treatment of doctors. The blood sample needs to be fully and uniformly mixed before detection, so that the phenomenon that the detection result is influenced by layering generated due to different specific gravities of blood cells and plasma after the blood sample is kept still for a period of time is avoided.

The existing blood sample mixing device comprises a motor, a cylinder and other driving parts, wherein the driving parts are connected with a power supply through cables and the like, the cables are usually guided and protected through a tank chain, but the tank chain moves periodically and is easy to wear to generate fragments, and the fragments are attached to a tube cap of a test tube bearing a blood sample or other detection devices, so that the problem of hole blockage of a sampling needle or an impedance pool is easily caused, and the service life of the detection device or the sampling needle is influenced; in addition, if debris accidentally enters the reaction or detection device, the accuracy of the blood sample detection is affected.

Disclosure of Invention

In view of this, a sample mixing device capable of effectively avoiding the generation of debris and ensuring the accuracy of the detection result is provided.

The utility model provides a sample mixing device, including clamping jaw assembly and with the first driving piece that the clamping jaw assembly transmission is connected, clamping jaw assembly include the clamping jaw and with the second driving piece that the clamping jaw transmission is connected, the drive of second driving piece the clamping jaw opens or folds in order to snatch the test tube that bears the weight of the sample that awaits measuring, first driving piece drive snatchs there is the test tube clamping jaw assembly swings and carries out the mixing operation of sample, the cable cover of first driving piece, second driving piece is equipped with flexible cover.

Further, the second driving piece is an air cylinder, and a flexible sleeve is sleeved on an air pipe of the air cylinder.

Further, still including being used for detecting the clamping jaw sensor of the state of clamping jaw, the cable cover of clamping jaw sensor is equipped with flexible cover or the cable of clamping jaw sensor is soft winding displacement.

Further, still including being used for detecting the angle sensor of clamping jaw assembly's swing angle, angle sensor's cable cover is equipped with the flexible cover or angle sensor's cable is soft winding displacement.

Further, the first driving member is disposed on a fixing plate, the angle sensor is disposed on a bracket, the bracket is provided with a mounting hole, the mounting hole is a slot extending a certain length in a transverse direction, and a screw passes through the mounting hole of the bracket to be connected with the fixing plate, so that the bracket can move in the transverse direction relative to the fixing plate to adjust the position of the angle sensor.

Furthermore, the flexible sleeve is of a hollow cylindrical structure or a compact mesh structure, and two ends of the flexible sleeve are provided with pressing plates or pressing sheets for fixing the two ends.

Further, the first driving piece is a rotating motor, the clamping jaw assembly is fixedly connected with a swing arm, a transmission mechanism is connected between the rotating motor and the swing arm, and the transmission ratio of the transmission mechanism is greater than 1.

Further, still including the drive the third driving piece that clamping jaw subassembly and first driving piece reciprocated, the third driving piece is fixed to be set up on a base plate, first driving piece is fixed to be set up on a fixed plate, the fixed plate with the base plate is perpendicular and sliding connection mutually.

Further, the rear side edge of base plate is connected with the backplate, the backplate with the parallel interval of fixed plate sets up, be provided with on the fixed plate and walk the line board, the flexible cover includes first flexible cover and second flexible cover, first flexible cover is established and is arranged in walk the line board with between the backplate, the second flexible cover connect in first driving piece with between the clamping jaw subassembly.

Furthermore, a sliding block and a guide rail for guiding the sliding block to move up and down are arranged on the base plate, the first driving piece is in transmission connection with the sliding block, and the fixed plate is fixedly connected with the sliding block; the side of the fixed plate, facing the sliding block, is provided with a groove which is inserted into the sliding block, one side of the fixed plate, facing the base plate, is provided with a transverse adjusting screw hole, the base plate is provided with an operating hole corresponding to the adjusting screw hole, the operating hole extends for a certain length along the vertical direction, and an adjusting screw passes through the operating hole and is connected with the adjusting screw hole, so that the fixed plate can move up and down relative to the base plate to adjust the relative position of the groove of the fixed plate and the sliding block.

Compared with the prior art, the sample blending device is provided with the flexible sleeves sleeved on the cables of the second driving part and the first driving part, so that the problem that a tank chain is used to generate scraps in the existing structure can be effectively solved, the test tube for loading a sample to be detected, the sample to be detected and each element of detection equipment are not affected by the scraps, and the accuracy of sample detection is ensured.

Drawings

Fig. 1 is a schematic view of a sample mixing apparatus according to an embodiment of the present invention.

FIG. 2 is a side view of the sample mixing device of FIG. 1.

FIG. 3 is an exploded view of the sample homogenizing apparatus shown in FIG. 1.

Fig. 4 is a schematic view of the jaw assembly and the first driving member of the sample mixing apparatus shown in fig. 3.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. One or more embodiments of the present invention are illustrated in the accompanying drawings to provide a more accurate and thorough understanding of the disclosed embodiments. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein.

The same or similar reference numbers in the drawings correspond to the same or similar parts; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

The utility model provides a sample blending device, which is used for blending operation before detection of biological samples, particularly blood samples, and avoids influence on accuracy of detection results caused by sample layering. Referring to fig. 1 to 3, a sample mixing apparatus according to an embodiment of the present invention includes a clamping jaw 10, and a first driving member 30, a second driving member 20, and a third driving member 40, which are in transmission connection with the clamping jaw 10, wherein the clamping jaw 10 is used for gripping a test tube 100 carrying a sample to be tested; the second driving member 20 drives the jaws 10 to open or close to grasp and place the test tube 100, and the two components together form a jaw assembly; the third driving member 40 drives the clamping jaw 10 to move up and down, the clamping jaw 10 clamps the test tube 100 when moving down to the clamping position, and the first driving member 30 drives the clamping jaw 10 clamped with the test tube 100 to swing when moving up to the mixing position, so as to sufficiently mix the sample to be measured in the test tube 100.

Generally, the test tube 100 loaded with a sample to be tested is placed on a test tube rack, and a sample injection mechanism of the sample testing device conveys the test tube rack to a preset sample injection position, so that the test tube 100 moves to a position right below the clamping jaw 10, and the sample mixing device provided by the utility model is convenient for grabbing the test tube 100. Specifically, the second driving member 20 may be a cylinder or the like, and a piston rod thereof is in transmission connection with the clamping jaw 10 to drive the clamping jaw 10 to open or close; the first driving member 30 may be a rotary motor, such as a stepping motor, and is in transmission connection with the clamping jaw 10 through a transmission mechanism 50, and the first driving member 30 drives the clamping jaw 10 to swing left and right through the switching of forward and reverse rotation; the third driving member 40 may be a linear motor, such as a screw motor, etc., and is connected to the driving jaw 10 through a sliding mechanism to drive the jaw 10 to move up and down.

The blending operation of the sample blending device mainly comprises the following steps: firstly, the second driving member 20 drives the clamping jaw 10 to open, the third driving member 40 drives the clamping jaw 10 to move downwards to the gripping position, and the opened clamping jaw 10 is surrounded on the periphery of the test tube 100; then, the second driving member 20 drives the clamping jaws 10 to close, and the closed clamping jaws 10 clamp the test tube 100; then, the third driving member 40 drives the clamping jaw 10 and the test tube 100 clamped by the clamping jaw 10 to move upwards to the mixing position; then, the first driving member 30 drives the clamping jaw 10 to swing back and forth, so as to fully and uniformly mix the sample to be detected in the test tube 100; finally, the third driving member 40 drives the clamping jaw 10 to move downwards, the second driving member 20 drives the clamping jaw 10 to open, the uniformly mixed test tube 100 is placed at a preset position, and the uniformly mixed test tube 100 can enter a sample detection process.

Preferably, the second driving member 20 is provided with a clamping jaw sensor 90, the clamping jaw sensor 90 is used for detecting whether the clamping jaw 10 is opened or not and feeding back the detection result to the controller, and the controller controls the operation of the third driving member 40 according to the state of the clamping jaw 10, so as to prevent the clamping jaw 10 from moving and damaging the sample test tube 100.

In the illustrated embodiment, the transmission mechanism 50 is a belt transmission, and includes a driving wheel 52, a driven wheel 54, and a belt 56 that couples the driving wheel 52 and the driven wheel 54, wherein the driving wheel 52 is connected to the output shaft of the first driving member 30, and the driven wheel 54 is connected to the second driving member 20 through a swing arm. The rotation of the first driving member 30 drives the swing arm to rotate through the transmission mechanism 50, and further drives the second driving member 20 to rotate. Through the periodic switching of the forward and reverse rotation of the first driving member 30, the second driving member 20, the clamping jaw 10 and the test tube 100 can be driven to swing back and forth, and the sample to be detected in the test tube 100 is uniformly mixed. Preferably, the diameter of the driving wheel 52 is smaller than that of the driven wheel 54, so that the transmission ratio of the transmission mechanism 50 is greater than 1, the control precision of the swing angle is effectively improved, and the blending operation is more accurate.

In the illustrated embodiment, the third driving element 40 is fixedly disposed on a substrate 60, and the substrate 60 is provided with a mounting seat 62 at the top thereof for mounting the third driving element 40. The lead screw of the third driving member 40 extends vertically downward and is connected to a slider 64, and the slider 64 slides up and down relative to the base plate 60 under the driving of the third driving member 40. The jaw assembly is connected with the first driving member 40 through a fixing plate 70, and the slider is connected with the fixing plate 70 to drive the jaw assembly and the first driving member 40 to move up and down. Preferably, vertical guide rails 66 are provided on the base plate 60 to guide the up and down movement of the slider 64, and the guide rails 66 preferably extend to the mounting base 62 to ensure the accuracy of the movement of the slider 64. Preferably, the base plate 60 is connected to the first bracket 68, the first bracket 68 is provided with a position sensor 92 for sensing the position of the slider 64, and the controller automatically controls the operation of the third driving member 40 according to the position of the slider 64.

In the illustrated embodiment, the first driving member 30 is fixedly disposed on the fixing plate 70, and the fixing plate 70 is connected to the sliding block 64 by a screw or the like, so that the sliding block 64 can move the fixing plate 70, the first driving member 30 connected to the fixing plate 70, the third driving member 40 connected to the first driving member 30, and the clamping jaw 10 connected to the third driving member 40 up and down synchronously under the action of the third driving member 40. In the present embodiment, the fixing plate 70 is disposed substantially perpendicular to the base plate 60, and a side end (a left side end in the illustrated direction) of the fixing plate 70 facing the base plate 60 forms a groove 71 to be connected with the slider 64 in an inserting manner. Preferably, the fixing plate 70 is formed with a first fixing hole 73 at the position of the groove 71, the sliding block 64 is formed with a second fixing hole 65 corresponding to the first fixing hole 73, and after the sliding block 64 and the groove 71 are inserted, the fixing plate 70 and the sliding block 64 are fixedly connected by screws passing through the corresponding fixing holes 65, 73.

Preferably, the fixing plate 70 is provided with an adjusting screw hole 75, and the adjusting screw hole 75 cooperates with an adjusting screw 77 to adjust the position of the fixing plate 70, so that the groove 71 of the fixing plate 70 is smoothly inserted into the slider 64 and the fixing plate 70 can be kept upright after assembly. In the illustrated embodiment, the adjustment screw hole 75 is provided at a lower edge of the fixing plate 70 to extend laterally inward from the fixing plate 70 toward a side of the base plate 60. Correspondingly, the base plate 60 is formed with an operation hole 69 therethrough, and the adjustment screw 77 is screwed into the adjustment screw hole 75 through the operation hole 69 from the outside of the base plate 60, so that the adjustment screw 77 can be operated to adjust the fixing plate 70 from the outside of the base plate 60. As shown in fig. 3, the operation hole 69 is a longitudinal slot and extends a certain length in the vertical direction, so that the adjusting screw 77 has a certain moving space in the vertical direction, which facilitates the alignment and connection between the adjusting screw 77 and the adjusting screw hole 75, and also facilitates the adjustment operation of the fixing plate 70 after the adjusting screw 77 is connected with the adjusting screw hole 75.

Referring to fig. 4, the fixing plate 70 is connected to the second bracket 79, the second bracket 79 is provided with an angle sensor 94 for detecting the swing angle of the clamping jaw assembly, and the controller automatically controls the operation of the first driving member 30 according to the swing angle of the clamping jaw assembly, so that the samples to be measured in the test tube 100 can be fully mixed. In the illustrated embodiment, the fixing plate 70 is provided at a side thereof with a screw hole 78, and the second bracket 79 is formed with a mounting hole 790 corresponding to the screw hole 78, and a screw is inserted through the mounting hole 790 to be screwed with the screw hole 78, thereby coupling the second bracket 79 to the fixing plate 70. Preferably, the mounting hole 790 is a slot hole extending laterally with a certain width, so that the screw can move laterally in the mounting hole 790, and thus the second bracket 79 can have a certain moving range in the front-back direction relative to the fixing plate 70, so that the angle sensor 94 on the second bracket 79 can be aligned with the sensing piece to accurately sense the swing angle of the clamping jaw 10.

As shown in fig. 1, a back plate 80 is attached to a rear side edge of the base plate 60, and the entire apparatus can be connected to other devices or components through the back plate 80. The back plate 80 and the fixing plate 70 are spaced and parallel to each other, in the illustrated embodiment, the first driving element 30 and the second driving element 20 are disposed on a side (front side in the illustration) of the fixing plate 70 facing away from the back plate 80 and located at the bottom and top of the fixing plate 70, respectively, the transmission mechanism 50 is disposed on a side (rear side in the illustration) of the fixing plate 70 facing toward the back plate 80, an output shaft and a swing arm of the first driving element 30 penetrate through the fixing plate 70 to be connected with the driving wheel 52 and the driven wheel 54, so that distribution of each element on the fixing plate 70 is more reasonable and compact, and connection between the first driving element 30 and the second driving element 20 is also more convenient. In other embodiments, the transmission mechanism 50 may have other forms, such as a gear transmission, a sprocket transmission, etc., and is not limited to the specific embodiment.

The top of the fixing plate 70 is provided with a wiring board 82, and cables, air pipes and the like of the first driving element 30, the second driving element 20, the clamping jaw sensor 90 and the angle sensor 94 penetrate through the wiring board 82 to the back plate 80. A first flexible sleeve 84 is arranged between the wiring board 82 and the back plate 80 and is used for penetrating the cable of the first driving part 30, the air pipe of the second driving part 20 and the cables of the

sensors

90 and 94; a second flexible sleeve 86 is arranged between the clamping jaw assembly and the first driving member 20 and is used for passing through an air pipe of the second driving member 20 and cables of the

sensors

90 and 94. When the fixing plate 70 is driven to move up and down by the third driving member 40, the first flexible sleeve 84 between the routing plate 82 and the back plate 80 and the cable and the air tube in the first flexible sleeve 84 move up and down; when the first driving member 30 drives the jaw assembly to swing back and forth, the second flexible sleeve 86 between the two and the cable and air tube in the second flexible sleeve 86 will swing left and right. During the movement or oscillation of the elements, the first and second

flexible sleeves

84, 86 do not generate debris due to their inherent flexibility.

The first and second

flexible sleeves

84, 86 may be of rubber, silicone, polyester, nylon, polyethylene, polypropylene, polyamide, fiberglass yarn, silicone oil, or other flexible plastic construction having sufficient flexibility. In the illustration, the first and second

flexible sheaths

84, 86 are hollow tubular structures that completely enclose the respective cables, tubes, etc. In other embodiments, the first and second

flexible sleeves

84, 86 may be of a dense mesh construction, again to provide protection for cables, tubes, etc. In addition, the

flexible sleeves

84 and 86 can be sleeved with a plurality of cables and air pipes simultaneously, or each cable or each air pipe is sleeved with one

flexible sleeve

84 and 86. Preferably, the two ends of the first flexible sleeve 84 are respectively provided with a pressing plate 88 for fixing the first flexible sleeve, and the two ends of the second flexible sleeve 86 are respectively provided with a pressing plate 89 for fixing the second flexible sleeve, so as to ensure that the first and second

flexible sleeves

84 and 86 are not deviated in the moving or swinging process, and form effective protection for cables, air pipes and the like all the time. In addition, the cables of the clamping jaw sensor 90 and the angle sensor 94 may be flexible flat cables, and the flexible cover may not be required to be sleeved at this time.

According to the sample blending device, the flexible sleeves are sleeved on the cable and the air pipe, so that the problem that a tank chain is used to generate fragments in the existing structure is solved, the test tube, the sample to be detected and each element of the detection equipment are not affected by the fragments, and the accuracy of the detection result is ensured. In addition, the mounting angle of the fixing plate can be finely adjusted through the adjusting screw, so that the fixing plate and each element on the fixing plate can be kept in a vertical state. In addition, set up the state that the sensor detected slider, first driving piece, clamping jaw, can control the operation of each driving piece more accurately, the second driving piece passes through drive mechanism and is connected with first driving piece moreover, and drive mechanism's drive ratio is greater than 1, improves the initialized precision of mixing angle, ensures that the sample that awaits measuring in the test tube can abundant mixing. In a word, the sample blending device can fully blend the sample, can avoid generating fragments to influence the detection of the sample, and ensures the accuracy and reliability of the final detection result.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and other changes and modifications can be made by those skilled in the art according to the spirit of the present invention, and these changes and modifications made according to the spirit of the present invention should be included in the scope of the present invention as claimed.

Claims

1. The utility model provides a sample mixing device, its characterized in that, including clamping jaw assembly and with the first driving piece that the clamping jaw assembly transmission is connected, clamping jaw assembly include the clamping jaw and with the second driving piece that the clamping jaw transmission is connected, the drive of second driving piece the clamping jaw opens or folds in order to snatch the test tube that bears the weight of the sample that awaits measuring, the drive of first driving piece snatchs and has the test tube clamping jaw assembly swings and carries out the mixing operation of sample, the cable cover of first driving piece, second driving piece is equipped with flexible cover.

2. The sample blending device according to claim 1, wherein the second driving member is an air cylinder, and an air tube of the air cylinder is sleeved with a flexible sleeve.

3. The sample blending device according to claim 1, further comprising a clamping jaw sensor for detecting the state of the clamping jaw, wherein a flexible sleeve is sleeved on a cable of the clamping jaw sensor or the cable of the clamping jaw sensor is a flexible flat cable.

4. The sample blending device according to claim 1, further comprising an angle sensor for detecting the swing angle of the clamping jaw assembly, wherein a flexible sleeve is sleeved on a cable of the angle sensor or the cable of the angle sensor is a flexible flat cable.

5. The sample mixing device according to claim 4, wherein the first driving member is disposed on a fixing plate, the angle sensor is disposed on a bracket, the bracket is provided with a mounting hole, the mounting hole is a slot extending a certain length in a transverse direction, and a screw passes through the mounting hole of the bracket to be connected with the fixing plate, so that the bracket can move in the transverse direction relative to the fixing plate to adjust the position of the angle sensor.

6. The sample mixing device according to any one of claims 1 to 5, wherein the flexible sleeve is a hollow cylindrical structure or a compact mesh structure, and pressing plates or pressing sheets are arranged at two ends of the flexible sleeve to fix the two ends.

7. The sample mixing device according to claim 1, wherein the first driving member is a rotary motor, the clamping jaw assembly is fixedly connected to a swing arm, a transmission mechanism is connected between the rotary motor and the swing arm, and the transmission ratio of the transmission mechanism is greater than 1.

8. The sample mixing device according to claim 1, further comprising a third driving member for driving the clamping jaw assembly and the first driving member to move up and down, wherein the third driving member is fixedly disposed on a base plate, the first driving member is fixedly disposed on a fixing plate, and the fixing plate is perpendicular to and slidably connected to the base plate.

9. The sample mixing device according to claim 8, wherein a back plate is connected to a rear side edge of the substrate, the back plate and the fixing plate are arranged in parallel at an interval, a wiring board is arranged on the fixing plate, the flexible sleeve comprises a first flexible sleeve and a second flexible sleeve, the first flexible sleeve is arranged between the wiring board and the back plate, and the second flexible sleeve is connected between the first driving member and the clamping jaw assembly.

10. The sample mixing device according to claim 8, wherein the base plate is provided with a slide block and a guide rail for guiding the slide block to move up and down, the first driving member is in transmission connection with the slide block, and the fixing plate is fixedly connected with the slide block; the side of the fixed plate, facing the sliding block, is provided with a groove which is inserted into the sliding block, one side of the fixed plate, facing the base plate, is provided with a transverse adjusting screw hole, the base plate is provided with an operating hole corresponding to the adjusting screw hole, the operating hole extends for a certain length along the vertical direction, and an adjusting screw passes through the operating hole and is connected with the adjusting screw hole, so that the fixed plate can move up and down relative to the base plate to adjust the relative position of the groove of the fixed plate and the sliding block.