Automatic mixing device for blood collection tubes

Abstract

An automatic mixing device for blood collection tubes relates to the field of medical instruments and comprises a conveying guide rail, an electric trolley, a clamping mechanism and a control mechanism, the conveying guide rail comprises an overturning section formed by spiral extension and transfer sections connected to two ends of the overturning section, and a metal guide sheet extending along a track is arranged on the conveying guide rail; the bottom of the electric trolley is provided with a magnet which can be attracted with the metal guide sheet; the clamping mechanism is arranged on the electric trolley to clamp the blood collection tubes so that the blood collection tubes can turn over along with spiral conveying of the operation trolley; the control mechanism is arranged on the transfer section and located at the input end of the overturning section. Comprising a photoelectric head arranged on a transfer section, a photoelectric sensor which is arranged on a transfer trolley and can be opposite to the photoelectric head, a gravity sensor which is arranged on an electric trolley and can be in contact with a blood collection tube, and a controller which is arranged in the electric trolley and is respectively connected with the photoelectric sensor and the gravity sensor. When the blood collection tubes are driven by the electric trolley to pass through the overturning section of the conveying guide rail, overturning and uniform mixing of the blood collection tubes are automatically completed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical apparatus and instruments, and particularly relates to an automatic mixing device for blood collection tubes. BACKGROUND

[0002] A vacuum blood collection tube is a common medical instrument, is a disposable negative pressure vacuum tube capable of realizing quantitative blood collection, and needs to be used in combination with a venous blood collection needle. After blood is collected, most types of blood collection tubes need to be turned over and shaken to mix the collected blood with additives in the blood collection tube, so that anticoagulation, coagulation promotion and other effects are achieved. In the current blood collection scene, medical staff usually hold the blood collection tube to complete mixing by turning it over 5-8 times after blood collection is completed, and the medical staff cannot perform other operations during this period. When the number of collection personnel is large, the blood collection efficiency is greatly affected, and the medical staff are prone to fatigue after long-time operation, which affects work efficiency, and improvement is needed. SUMMARY

[0003] The utility model aims at overcoming the shortcomings of the prior art and provides an automatic mixing device for blood collection tubes.

[0004] The utility model adopts the following technical scheme:

[0005] An automatic mixing device for blood collection tubes comprises a conveying guide rail, an electric trolley, a clamping mechanism and a control mechanism. The conveying guide rail comprises a turning-over section formed by spirally extending in a horizontal direction and a transfer section connected to both ends of the turning-over section. A metal guide piece extending along the track is arranged on the conveying guide rail. The electric trolley is movably arranged on the conveying guide rail to convey the blood collection tube. Magnets are arranged at the bottom of the electric trolley to be adsorbed by the metal guide piece, so that the electric trolley moves along the turning-over section. The clamping mechanism is arranged on the electric trolley to clamp the blood collection tube to make it turn over when the electric trolley spirally conveys. The control mechanism is arranged on the transfer section and located at the input end of the turning-over section. The control mechanism comprises a photoelectric head arranged on the transfer section, a photoelectric sensor arranged on the electric trolley and opposite to the photoelectric head, a gravity sensor arranged on the electric trolley and capable of contacting the blood collection tube, and a controller arranged in the electric trolley and connected with the photoelectric sensor and the gravity sensor.

[0006] Preferably, the clamping mechanism comprises a mounting plate, a limiting clamping plate and a clamping spring. The mounting plate is arranged on the electric trolley and located at both sides of the blood collection tube. The limiting clamping plate is opposite to the mounting plate and can be clamped on the side surface of the blood collection tube. The clamping spring is connected between the mounting plate and the limiting clamping plate to make the limiting clamping plate always move towards the blood collection tube.

[0007] Preferably, the lower tube mechanism is arranged on the transfer section and at the output end of the turnover section, and comprises a pressing block and a collecting frame; one side of the pressing block is opposite to the conveying direction and is obliquely arranged above the transfer section; the blood collection tube is pressed by the side of the pressing block to be separated from the clamping mechanism after the electric trolley passes below the pressing block; and the collecting frame is arranged below the transfer section to receive the blood collection tube.

[0008] Preferably, the mounting plate is perpendicular to the conveying direction of the conveying rail.

[0009] Preferably, the lowest height of the pressing block is lower than the height of the blood collection tube on the electric trolley, but is greater than the height of the mounting plate.

[0010] Preferably, the conveying rail is concavely formed downwardly to form a moving channel for the electric trolley, and the moving channel is concavely formed outwardly on both sides to form a limiting groove; and the moving wheel arranged on the electric trolley can be driven to move and can be extended into the limiting groove.

[0011] Preferably, the spiral radius of the turnover section is greater than the height of the highest point of the blood collection tube on the electric trolley.

[0012] Preferably, the spiral turns of the turnover section are 5 turns.

[0013] As can be seen from the above description of the present application, compared with the prior art, the present application has the following beneficial effects: the electric trolley drives the blood collection tube to pass through the turnover section of the conveying rail, thereby automatically completing the turnover and mixing of the blood collection tube; the electric trolley is automatically stopped after one turn controlled by the photoelectric head and the photoelectric sensor, and is automatically restarted according to the gravity sensor; the operator only needs to perform the installation and taking work, thereby reducing the working steps of the blood collection personnel, improving the blood collection work efficiency, and saving labor;

[0014] The blood collection tube is extruded from the clamping mechanism by the pressing block and falls into the collecting frame below, thereby automatically discharging the blood collection tube on the electric trolley; the operator only needs to perform the placing operation of the blood collection tube, thereby further reducing the operation steps of the operator.

[0015] The mounting plate is perpendicular to the conveying direction of the conveying rail, which is beneficial to the discharge of the blood collection tube and can also avoid the situation that the blood collection tube is thrown out due to the inertia of the electric trolley during the conveying process, thereby improving the stability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the present application;

[0017] Figure 2 is Figure 1 is an enlarged view of part A in FIG. 4;

[0018] Figure 3 For Figure 1 Local enlarged view at B;

[0019] Figure 4 For the structure of the electric trolley of the utility model Figure 1 ;

[0020] Figure 5 For the structure of the electric trolley of the utility model Figure 2 ;

[0021] Figure 6 For the working schematic view of the extrusion block of the utility model

[0022] In the figure: 1-conveying guide rail; 11-turnover section; 12-transfer section; 13-metal guide piece; 14-moving channel; 15-limiting groove; 2-electric trolley; 21-magnet; 22-moving wheel; 3-clamping mechanism; 31-mounting plate; 32-limiting clamping plate; 33-clamping spring; 34-extension plate; 4-tube conveying mechanism; 41-extrusion block; 42-collection frame; 5-control mechanism; 51-photoelectric head; 52-photoelectric sensor; 53-gravity sensor. DETAILED DESCRIPTION

[0023] The utility model will be further described below through specific embodiments.

[0024] Referring to Figures 1 to 6 As shown in the figure, an automatic blood collection tube mixing device comprises a conveying guide rail 1, an electric trolley 2, a clamping mechanism 3, a tube conveying mechanism 4 and a control mechanism 5.

[0025] The conveying guide rail 1 comprises a turnover section 11 extending spirally along the horizontal direction and a transfer section 12 connected at both ends of the turnover section 11, and the number of spiral turns of the turnover section 11 is 5. The conveying guide rail 1 is provided with a metal guide piece 13 extending along the track.

[0026] The electric trolley 2 is movably arranged on the conveying guide rail 1 to convey the blood collection tube. The bottom of the electric trolley 2 is provided with a magnet 21 which can be adsorbed by the metal guide piece 13 to enable the electric trolley 2 to move along the turnover section 11 without falling off. The electric trolley 2 automatically completes the turnover and mixing of the blood collection tube when the electric trolley 2 drives the blood collection tube to pass through the turnover section 11 of the conveying guide rail 1. Specifically, the conveying guide rail 1 is downwardly recessed to form a moving channel 14 for the electric trolley 2. The moving channel 14 is outwardly recessed on both sides to form a limiting groove 15. The electric trolley 2 is provided with a moving wheel 22 which can drive the electric trolley 2 to move and can extend into the limiting groove 15. Further, the spiral radius of the turnover section 11 is greater than the highest point height of the blood collection tube on the electric trolley 2. Preferably, the electric trolley 2 can be provided with multiple electric trolleys to increase the conveying frequency and further improve the work efficiency. The speed of the electric trolley 2 is less than 5 cm / s to avoid the liquid in the blood collection tube from not being mixed due to the centrifugal force when the electric trolley 2 passes through the turnover section 11.

[0027] The clamping mechanism 3 is arranged on the electric trolley 2 to clamp the blood collection tube to enable the blood collection tube to turn over when the electric trolley 2 spirally conveys. The clamping mechanism 3 includes a mounting plate 31, a limiting clamping plate 32 and a clamping spring 33. The mounting plate 31 is arranged on the electric trolley 2 and located on both sides of the blood collection tube. The limiting clamping plate 32 is opposite to the mounting plate 31 and can clamp the side of the blood collection tube. The clamping spring 33 is connected between the mounting plate 31 and the limiting clamping plate 32 to enable the limiting clamping plate 32 to always move towards the blood collection tube. Specifically, the upper end of the limiting clamping plate 32 is provided with an elongated plate 34 which gradually increases in diameter from bottom to top to facilitate the blood collection tube to be installed into the clamping mechanism 3 from top to bottom.

[0028] The lower tube mechanism 4 is arranged on the transfer section 12 and located at the output end of the turnover section 11. The lower tube mechanism 4 includes a pressing block 41 and a collecting frame 42. One side of the pressing block 41 is opposite to the conveying direction and is inclined to cross above the transfer section 12. The electric trolley 2 passes below the pressing block 41. The blood collection tube is pressed by the side of the pressing block 41 to separate from the clamping mechanism 3. The collecting frame 42 is arranged below the transfer section 12 to receive the blood collection tube. The blood collection tube is pressed out of the clamping mechanism 3 by the pressing block 41 and falls into the collecting frame 42 below to automatically unload the blood collection tube on the electric trolley 2. The operator only needs to place the blood collection tube to further reduce the operation steps of the operator. Specifically, the lowest part of the pressing block 41 is lower than the height of the blood collection tube on the electric trolley 2 but higher than the height of the mounting plate 31 to avoid affecting the passability of the electric trolley 2. Further, the mounting plate 31 is perpendicular to the conveying direction of the conveying guide rail 1 to facilitate the discharge of the blood collection tube and avoid the blood collection tube from being thrown out due to the inertia of the electric trolley 2 during the conveying process to improve the stability of the device.

[0029] The control mechanism 5 is located on the transfer section 12 and at the input end of the flipping section 11. It includes a photoelectric head 51 on the transfer section 12, a photoelectric sensor 52 on the trolley that is opposite to the photoelectric head 51, a gravity sensor 53 on the electric trolley 2 that is in contact with the blood collection tubes, and a controller inside the electric trolley 2 connected to the photoelectric sensor 52 and the gravity sensor 53, respectively. The photoelectric head 51 and photoelectric sensor 52 control the electric trolley 2 to automatically stop after each revolution, and then automatically restart based on the gravity sensor 53. Operators only need to perform installation and retrieval tasks, reducing the number of steps required for blood collection, improving efficiency, and saving labor.

[0030] In use, medical staff place the blood collection tube, with the collected blood, from top to bottom in the clamping mechanism 3 near the photoelectric head 51. Upon detection of the tube placement by the gravity sensor 53, the electric trolley 2 is activated, transporting the tube forward along the conveying guide rail 1. After spiral transport via the flipping section 11, the blood collection tube is mixed. Then, as the electric trolley 2 passes under the squeezing block 41, the tube, influenced by the squeezing block 41, gradually tilts outward, opening the limiting clamp 32 and detaching from the clamping mechanism 3, falling into the collection frame 42 below (e.g., ...). Figure 6 As shown, since the electric trolley 2 is at a low speed, it will not damage the blood collection tubes when it passes the squeezing block 41. When the empty electric trolley 2 returns to the photoelectric head 51, the photoelectric sensor 52 detects the photoelectric head 51, and the controller stops the electric trolley 2 to allow medical personnel to place new blood collection tubes. This application automatically flips and mixes the blood collection tubes as they pass through the flipping section 11 of the transport guide rail 1, and automatically stops the electric trolley 2 after each revolution, controlled by the photoelectric head 51 and photoelectric sensor 52, and then automatically restarts based on the gravity sensor 53. Operators only need to perform installation and retrieval tasks, reducing the number of steps required for blood collection, improving efficiency, and saving labor.

[0031] The above description is merely a preferred embodiment of the present utility model, and therefore cannot be construed as limiting the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the patent application and the contents of the specification of the present utility model shall still fall within the scope of the patent of the present utility model.

Claims

1. An automatic mixing device for blood collection tubes, characterized in that: The device comprises a conveying rail, an electric trolley, a clamping mechanism and a control mechanism. The conveying rail comprises a turnover section spirally extending in a horizontal direction and a transfer section connected to both ends of the turnover section. Metal guide pieces are arranged on the conveying rail along the track. The electric trolley is movably arranged on the conveying rail to convey blood collection tubes. Magnets are arranged on the bottom of the electric trolley to be adsorbed by the metal guide pieces so that the electric trolley moves along the turnover section. The clamping mechanism is arranged on the electric trolley to clamp the blood collection tubes so that the blood collection tubes are turned over when the electric trolley spirally conveys. The control mechanism is arranged on the transfer section and located at the input end of the turnover section. The control mechanism comprises a photoelectric head arranged on the transfer section, a photoelectric sensor arranged on the electric trolley and opposite to the photoelectric head, a gravity sensor arranged on the electric trolley and capable of contacting the blood collection tubes, and a controller arranged in the electric trolley and connected to the photoelectric sensor and the gravity sensor.

2. The automatic mixing device of blood collection tube according to claim 1, characterized in that: The clamping mechanism comprises a mounting plate, a limiting clamping plate and a clamping spring. The mounting plate is arranged on the electric trolley and located on both sides of the blood collection tubes. The limiting clamping plate is opposite to the mounting plate and capable of clamping the side of the blood collection tubes. The clamping spring is connected between the mounting plate and the limiting clamping plate so that the limiting clamping plate always tends to move towards the blood collection tubes.

3. The automatic mixing device of claim 2, wherein: The device further comprises a tube lowering mechanism arranged on the transfer section and located at the output end of the turnover section. The tube lowering mechanism comprises a pressing block and a collecting frame. One side of the pressing block is opposite to the conveying direction and inclined to span above the transfer section. After the electric trolley passes below the pressing block, the blood collection tubes are pressed by the side of the pressing block to be separated from the clamping mechanism. The collecting frame is arranged below the transfer section to receive the blood collection tubes.

4. The automatic mixing device of claim 3, wherein: The mounting plate is perpendicular to the conveying direction of the conveying rail.

5. The automatic mixing device of claim 3, wherein: The lowest part of the pressing block is lower than the height of the blood collection tubes on the electric trolley but higher than the height of the mounting plate.

6. The automatic mixing device of blood collection tube according to claim 1, characterized in that: The conveying rail is downwardly recessed to form a moving channel for the electric trolley. Limiting grooves are recessed on both sides of the moving channel. Moving wheels are arranged on the electric trolley to drive the electric trolley to move and extend into the limiting grooves.

7. The automatic mixing device of claim 1, wherein: The spiral radius of the turnover section is greater than the height of the highest point of the blood collection tubes on the electric trolley.

8. The automatic mixing device of claim 1, wherein: The number of spiral turns of the turnover section is 5.

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