Intelligent extraction device for pleural effusion

Abstract

The utility model discloses an intelligent pleural effusion extraction device which comprises an extraction cylinder, a drainage tube connected to the extraction end of the extraction cylinder and a piston assembly installed in the extraction cylinder, supporting rods are fixed to the upper side and the lower side of the other end of the extraction cylinder, and a motor box is fixed between the tail ends of the supporting rods. Left and right ends of the inner wall of the motor box are respectively provided with a screw motor and a circuit board. When the extraction cylinder needs to extract pleural effusion, a reverse rotation button can be pressed, the reverse rotation button enables the lead screw motor to drive the lead screw to rotate reversely at the moment, the piston rod drives the piston to move in the pleural effusion extraction direction along with threaded connection of the lead screw and the threaded sleeve of the piston rod, and when a forward rotation button is pressed, the lead screw motor drives the lead screw to rotate forwards. And the piston rod drives the piston to move in the direction of pushing out pleural effusion, so that the device can be operated by one hand, manual drawing work is not needed, the device is convenient to use, the device can be suitable for long extraction cylinders, and the extraction frequency is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cardiothoracic surgery, in particular to an intelligent extraction device for pleural effusion. Background Art

[0002] Pleural effusion refers to the accumulation of leaked fluid in the chest cavity, which is generally caused by heart or lung diseases. The main symptoms are dyspnea, normal body temperature or fever, and horizontal dullness on both sides of the chest wall when percussed. The position of the dullness boundary changes with the patient's body position. The treatment method for pleural effusion in cardiac surgery is usually puncture and drainage, that is, using a puncture needle to enter the chest cavity and use negative pressure to extract the effusion in the chest cavity to the outside of the body. The devices used in the puncture and drainage method usually include a puncture needle, a drainage tube, a negative pressure device and a fluid collection device.

[0003] Although the current pleural effusion extraction device allows the piston body to slide inside the extraction cylinder and can be operated with one hand without using both hands, in actual operation, if the extraction cylinder is too long, the other hand is still required to pull the piston rod, which makes it only suitable for shorter extraction cylinders. In general, the first extraction of pleural effusion should be less than 600 ml. Therefore, if a short tube is used for extraction, the number of extractions will be large, which is more troublesome. Summary of the invention

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide an intelligent extraction device for pleural effusion to solve the problems existing in the above-mentioned background technology.

[0005] A device for intelligent extraction of pleural effusion, comprising an extraction cylinder, a drainage tube connected to the extraction end thereof and a piston assembly installed inside the extraction cylinder, wherein support rods are fixed on both upper and lower sides of the other end of the extraction cylinder, a motor box is fixed between the ends of the support rods, a lead screw motor and a circuit board are respectively installed on the left and right ends of the inner wall of the motor box, a microcontroller connected to the lead screw motor signal is installed on the circuit board, a lead screw is connected to the output end of the lead screw motor, the end of the lead screw is threadedly connected to the piston assembly, a reverse button electrically connected to the lead screw motor is installed on the right side of the surface of one of the support rods, and a forward button electrically connected to the lead screw motor is installed on the left side of the surface of the other support rod, a guide assembly is installed between the support rod and the piston assembly, a collar is movably sleeved on the outside of the extraction cylinder, an observation window is opened in the middle of the front end of the collar, a photoelectric liquid level sensor is installed through the middle of the upper end of the collar, and the photoelectric liquid level sensor is connected to the microcontroller signal.

[0006] Preferably, the piston assembly comprises a piston and a piston rod, the piston is slidably connected inside the extraction cylinder, the piston rod is fixed to one end of the piston, and the end of the piston rod passes through the other end of the extraction cylinder and is slidably connected to the extraction cylinder.

[0007] Preferably, a threaded sleeve is fixed to the middle of the piston rod, and the end of the screw rod is located inside the threaded sleeve and is threadedly connected to the threaded sleeve.

[0008] Preferably, the guide assembly includes a guide rail, a fixing ring, and a guide rod. There are two guide rails that are fixed to the support rods in a one-to-one manner. The fixing ring is fixed to the outside of the end of the piston rod. There are two guide rods that are respectively fixed to both ends of the surface of the fixing ring. The end of the guide rod extends into the guide rail and is slidably connected to the guide rail.

[0009] Preferably, a battery box is fixedly installed at the other end of the motor box, a battery is installed in the battery box, a box cover is connected to the right end of the battery box by screws, and the battery is electrically connected to the lead screw motor, the microcontroller and the photoelectric liquid level sensor.

[0010] Preferably, the surface of the extraction cylinder is provided with scale lines, and the scale lines are located directly behind the observation window.

[0011] Preferably, a nut is fixed at the lower end of the collar, a screw button is threadedly connected inside the nut, and the end of the screw button passes through the collar and abuts against the surface of the extraction tube.

[0012] The beneficial effects are as follows:

[0013] 1. When the extraction tube needs to extract pleural effusion, the reverse button can be pressed. At this time, the reverse button causes the screw motor to drive the screw to reverse. As the screw and the threaded sleeve of the piston rod are threadedly connected, the piston rod drives the piston to move in the direction of extracting pleural effusion. When the forward button is pressed, the screw motor drives the screw to rotate forward, so that the piston rod drives the piston to move in the direction of pushing out the pleural effusion. In this way, it can be operated with one hand, and there is no need for manual pulling and drawing. It is more convenient to use and can be applied to longer extraction tubes to reduce the number of extractions.

[0014] 2. When it is necessary to specify a certain number of milliliters of pleural effusion to stop extracting, slide the ring and point the observation window of the ring to the corresponding scale line on the surface of the extraction tube. Because the photoelectric liquid level sensor and the observation window are located in the same plane, when the pleural effusion is extracted to the position of the observation window, the photoelectric liquid level sensor just senses the liquid level information and then transmits a signal to the microcontroller. The microcontroller controls the screw motor to stop. This is more intelligent and the amount of pleural effusion extracted is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of the utility model;

[0016] Figure 2 For this utility model Figure 1 A partial enlarged view of;

[0017] Figure 3 It is a cross-sectional schematic diagram of the motor box of the utility model.

[0018] In the figure: 1-extraction cylinder, 2-drainage tube, 3-piston assembly, 4-support rod, 5-guide rail, 6-fixing ring, 7-guide rod, 8-forward button, 9-reverse button, 10-screw, 11-motor box, 12-battery box, 13-box cover, 14-ring, 15-observation window, 16-photoelectric liquid level sensor, 17-nut, 18-screw button, 19-screw motor, 20-circuit board. DETAILED DESCRIPTION

[0019] See also Figure 1-Figure 3 , an intelligent pleural effusion extraction device, comprising an extraction tube 1, a drainage tube 2 connected to the extraction end thereof, and a piston assembly 3 installed inside the extraction tube 1, wherein the piston assembly 3 comprises a piston and a piston rod, wherein the piston is slidably connected inside the extraction tube 1, the piston rod is fixed at one end of the piston, the end of the piston rod passes through the other end of the extraction tube 1 and is slidably connected to the extraction tube 1, when the piston rod moves left and right, it drives the piston to move synchronously, when the piston slides to the right inside the extraction tube 1, the extraction tube 1 can extract pleural effusion through the drainage tube 2, and when the piston slides to the left inside the extraction tube 1, the pleural effusion inside the extraction tube 1 can be pushed to be discharged from the drainage tube 2;

[0020] The other end of the extraction cylinder 1 is fixed with support rods 4 on both the upper and lower sides, and a motor box 11 is fixed between the ends of the support rods 4. The left and right ends of the inner wall of the motor box 11 are respectively installed with a screw motor 19 and a circuit board 20. A microcontroller connected to the signal of the screw motor 19 is installed on the circuit board 20. The output end of the screw motor 19 is connected to a screw 10, and the end of the screw 10 is threadedly connected to the piston assembly 3. A threaded sleeve is fixed in the middle of the piston rod, and the end of the screw 10 is located inside the threaded sleeve and is threadedly connected to the threaded sleeve. A reversing button 9 electrically connected to the screw motor 19 is installed on the right side of the surface of one of the support rods 4, and a reversing button 9 electrically connected to the screw motor 19 is installed on the left side of the surface of the other support rod 4. A forward button 8 electrically connected to the screw motor 19 is provided. By pressing the reverse button 9, the screw motor 19 can be reversed, and the screw motor 19 drives the screw 10 to reverse. As the screw 10 and the threaded sleeve of the piston rod are threadedly matched, the piston rod drives the piston to move in the direction of extracting pleural effusion. When the forward button 8 is pressed, the screw motor 19 can be forwarded, and the screw motor 19 drives the screw 10 to rotate forward. As the screw 10 and the threaded sleeve of the piston rod are threadedly matched, the piston rod drives the piston to move in the direction of pushing out the pleural effusion. In this way, it can be operated with one hand, and there is no need to manually pull and draw. It is more convenient to use and can be applied to a longer extraction tube 1 to reduce the number of extractions.

[0021] A guide assembly is installed between the support rod 4 and the piston assembly 3, and the guide assembly includes a guide rail 5, a fixing ring 6, and a guide rod 7. There are two guide rails 5 and they are fixed to the support rod 4 in a one-to-one correspondence. The fixing ring 6 is fixed to the outside of the end of the piston rod. There are two guide rods 7 and they are fixed to both ends of the surface of the fixing ring 6. The end of the guide rod 7 extends into the guide rail 5 and is slidably connected to the guide rail 5. When the piston rod moves, the fixing ring 6 can drive the guide rod 7 to slide along the guide rail 5, so as to guide and limit the piston rod.

[0022] The extraction tube 1 is movably sleeved with a collar 14 on the outside, a nut 17 is fixed at the lower end of the collar 14, a screw button 18 is threadedly connected to the inside of the nut 17, the end of the screw button 18 passes through the collar 14 and abuts against the surface of the extraction tube 1, the collar 14 can slide outside the extraction tube 1, when the collar 14 moves to a suitable position, the screw button 18 can be rotated, and as the screw button 18 is threadedly connected to the nut 17, the screw button 18 moves to abut against the outer wall of the extraction tube 1, which can limit the collar 14;

[0023] An observation window 15 is provided in the middle of the front end of the collar 14, and scale lines are provided on the surface of the extraction tube 1, and the scale lines are located directly behind the observation window 15. A photoelectric liquid level sensor 16 is installed through the middle of the upper end of the collar 14, and the photoelectric liquid level sensor 16 is connected to the microcontroller signal. When it is necessary to specify how many milliliters of pleural effusion to stop, the observation window 15 of the collar 14 is facing the corresponding scale line on the surface of the extraction tube 1 by sliding the collar 14. Because the photoelectric liquid level sensor 16 and the observation window 15 are located in the same plane, when the pleural effusion level reaches the height of the observation window 15, the photoelectric liquid level sensor 16 senses the liquid level through the interruption or reflection change of light, thereby triggering a stop command, and then transmits a signal to the microcontroller, and the microcontroller controls the screw motor 19 to stop. This is more intelligent and the amount of pleural effusion extracted is more accurate.

[0024] A battery box 12 is fixedly installed at the other end of the motor box 11, and batteries are installed in the battery box 12. A box cover 13 is connected to the right end of the battery box 12 by screws. The battery is electrically connected to the screw motor 19, the microcontroller and the photoelectric liquid level sensor 16. The battery can be used to power the screw motor 19, the microcontroller and the photoelectric liquid level sensor 16, and the battery can be replaced by removing the box cover 13.

[0025] Working principle: before extracting pleural effusion, slide the collar 14 and place the observation window 15 of the collar 14 against the corresponding scale line on the surface of the extraction tube 1 to determine how many milliliters of pleural effusion need to be extracted, then turn the screw button 18 clockwise, as the screw button 18 is threadedly connected with the nut 17, the screw button 18 moves to abut against the outer wall of the extraction tube 1, which can limit the collar 14. Then, by pressing the reverse button 9, the screw motor 19 can be reversed, and the screw motor 19 drives the screw 10 to reverse. As the screw 10 and the threaded sleeve of the piston rod are threadedly matched, The piston rod drives the piston to move in the direction of extracting pleural effusion. Because the photoelectric liquid level sensor 16 and the observation window 15 are located in the same plane, when the pleural effusion level reaches the height of the observation window 15, the photoelectric liquid level sensor 16 senses the liquid level through the interruption or reflection change of light, thereby triggering a stop command, and then transmits a signal to the microcontroller. The microcontroller controls the screw motor 19 to stop, and the extraction work is stopped at this time. In this way, it can be operated with one hand, and there is no need for manual pulling. It is more convenient to use and more intelligent, and the amount of pleural effusion extracted is more accurate.

Claims

1. An intelligent pleural effusion extraction device, comprising an extraction tube (1), a drainage tube (2) connected to the extraction end thereof, and a piston assembly (3) installed inside the extraction tube (1), characterized in that: The other end of the extraction cylinder (1) is fixed with support rods (4) on both upper and lower sides, a motor box (11) is fixed between the ends of the support rods (4), a lead screw motor (19) and a circuit board (20) are respectively installed on the left and right ends of the inner wall of the motor box (11), a microcontroller connected to the signal of the lead screw motor (19) is installed on the circuit board (20), the output end of the lead screw motor (19) is connected to the lead screw (10), the end of the lead screw (10) is threadedly connected to the piston assembly (3), and one of the support rods (4) is installed on the right side of the surface A reverse button (9) is provided which is electrically connected to the screw motor (19); a forward button (8) which is electrically connected to the screw motor (19) is installed on the left side of the surface of the other support rod (4); a guide assembly is installed between the support rod (4) and the piston assembly (3); a collar (14) is movably sleeved on the outside of the extraction cylinder (1); an observation window (15) is provided in the middle of the front end of the collar (14); a photoelectric liquid level sensor (16) is installed through the middle of the upper end of the collar (14); and the photoelectric liquid level sensor (16) is connected to the microcontroller signal.

2. The intelligent pleural effusion extraction device according to claim 1, characterized in that: The piston assembly (3) comprises a piston and a piston rod, the piston being slidably connected inside the extraction cylinder (1), the piston rod being fixed to one end of the piston, and the end of the piston rod passing through the other end of the extraction cylinder (1) and being slidably connected to the extraction cylinder (1).

3. The intelligent pleural effusion extraction device according to claim 2, characterized in that: A threaded sleeve is fixed in the middle of the piston rod, and the end of the screw rod (10) is located inside the threaded sleeve and is threadedly connected to the threaded sleeve.

4. The intelligent pleural effusion extraction device according to claim 2, characterized in that: The guide assembly comprises a guide rail (5), a fixing ring (6), and a guide rod (7); the guide rails (5) are provided in two pieces and are fixed to the support rods (4) in a one-to-one correspondence; the fixing ring (6) is fixed to the outside of the end of the piston rod; the guide rods (7) are provided in two pieces and are respectively fixed to the two ends of the surface of the fixing ring (6); the ends of the guide rods (7) extend into the interior of the guide rail (5) and are slidably connected to the guide rail (5).

5. The intelligent pleural effusion extraction device according to claim 1, characterized in that: A battery box (12) is fixedly mounted on the other end of the motor box (11), a battery is mounted in the battery box (12), a box cover (13) is connected to the right end of the battery box (12) via screws, and the battery is electrically connected to the lead screw motor (19), the microcontroller and the photoelectric liquid level sensor (16).

6. The intelligent pleural effusion extraction device according to claim 1, characterized in that: The surface of the extraction cylinder (1) is provided with scale lines, and the scale lines are located directly behind the observation window (15).

7. The intelligent pleural effusion extraction device according to claim 1, characterized in that: A nut (17) is fixed to the lower end of the collar (14), and a screw button (18) is threadedly connected to the inside of the nut (17). The end of the screw button (18) passes through the collar (14) and abuts against the surface of the extraction tube (1).

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