A blood-back-proof infusion device

Abstract

The present invention relates to an anti-blood-backflow infusion set, comprising a first infusion tube and an anti-blood-backflow mechanism connected to the first infusion tube, wherein the anti-blood-backflow mechanism is connected to a second infusion tube at one end away from the first infusion tube, the first infusion tube, the second infusion tube and the anti-blood-backflow mechanism are connected to each other, and the anti-blood-backflow mechanism is used to prevent the liquid in the first infusion tube and the second infusion tube from flowing back. The present invention improves the existing infusion set structure, and the improved infusion set can prevent blood backflow during infusion, which will not scare the patient and cause the patient to worry and feel uneasy. At the same time, it will not cause the blood flowing back into the infusion set to coagulate into clots, thereby preventing the blood clots from entering the human body, thereby protecting the patient.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an anti-blood-back infusion device. Background Art

[0002] At present, the most commonly used infusion method in hospitals is gravity infusion. Due to the gravity of the liquid medicine itself, the hydraulic pressure of the liquid medicine is higher than that of the human veins, ensuring that the liquid medicine is infused into the patient's blood. However, during the infusion process or when the liquid medicine is infused or stopped automatically, when the hydraulic pressure is less than the venous pressure, if the flow rate regulator is not turned off or the needle is not pulled out in time, the patient's venous blood will flow back into the infusion hose, causing blood backflow. Once blood backflow occurs, it will at least scare the patient, causing the patient to worry and feel uneasy. At worst, it will cause the blood that flows back into the infusion device to coagulate into clots. If the blood clots enter the human body, blood clots may occur and block the blood vessels, or even cause serious medical accidents, endangering human health. In order to solve the above problems, the present invention proposes an anti-blood backflow infusion device. Summary of the Invention

[0003] (1) Technical problems to be solved

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, meet practical needs, and provide an anti-blood-back infusion device to solve the above-mentioned technical problems.

[0005] (2) Technical solution

[0006] In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is:

[0007] A blood-backflow prevention infusion device includes a first infusion tube and a blood-backflow prevention mechanism connected to the first infusion tube. The end of the blood-backflow prevention mechanism away from the first infusion tube is connected to a second infusion tube. The first infusion tube, the second infusion tube and the blood-backflow prevention mechanism are connected, and the blood-backflow prevention mechanism is used to prevent the liquid in the first infusion tube and the second infusion tube from flowing back.

[0008] Furthermore, the anti-backflow mechanism includes a support box, and a sensor arranged in the support box and connected to the second infusion tube. A trumpet-shaped guide tube is arranged in the support box, and the upper end of the first infusion tube is connected to the trumpet-shaped guide tube. An anti-backflow component is arranged between the trumpet-shaped guide tube and the sensor. When no liquid flows through the sensor, the anti-backflow component is used to seal the support box to achieve backflow of liquid in the first infusion tube and the second infusion tube.

[0009] Furthermore, the backflow prevention assembly includes a rotating plate hinged at one end to the inner wall of the support box, the other end of the rotating plate is abutted against an inclined plate, and the inclined upper end of the inclined plate is fixedly connected to the inner wall of the support box, one end of a first support spring and an electromagnet are fixedly connected to the lower end face of the rotating plate, and the other end of the first support spring is fixedly connected to a trumpet-shaped guide tube, and an iron block matching the electromagnet is provided on the trumpet-shaped guide tube.

[0010] Furthermore, the contact points between the rotating plate and the inclined plate are respectively inlaid with a second magnet and a first magnet, and the second magnet and the first magnet are arranged to be in contact with each other at their adjacent sides.

[0011] Furthermore, a pressurizing mechanism is provided in the blood backflow prevention mechanism.

[0012] Furthermore, the boosting mechanism includes an arc rod fixed on the rotating plate, and the arc rod is movably inserted into the trumpet-shaped guide tube, the arc rod is fixedly connected to the arc rack, and the arc rack is meshed with the first gear, the first gear is fixedly sleeved outside the first rotating rod, and the first rotating rod is rotatably set in the support box, one end of the first transmission belt is connected to the outside of the support box, and the other end of the first transmission belt is transmission-connected to the second rotating rod, the second rotating rod is rotatably set in the first infusion tube, and the second rotating rod is fixedly sleeved outside the second rotating rod, the second gear is meshed with the spur rack, and the spur rack is fixed on the side wall of the moving rod, the upper end of the moving rod is fixedly connected to a boosting plug, and the boosting plug is movably set in the fixed tube, the fixed tube is connected to the upper end of the first infusion tube, and the fixed tube is connected to the trumpet-shaped guide tube.

[0013] Furthermore, the boosting mechanism also includes a limiting ring, which is movably mounted on the outside of the moving rod, and one end of the transverse rod is fixedly connected to the outer wall of the limiting ring, and the other end of the transverse rod is fixedly connected to the inner wall of the first infusion tube. A second support spring is wrapped around the outside of the moving rod, and the two ends of the second support spring are respectively fixedly connected to the side wall of the moving rod and the lower end face of the limiting ring.

[0014] Furthermore, a driving mechanism is provided in the anti-blood backflow mechanism, and the driving mechanism includes a circular box fixedly plugged into the second infusion tube, a third rotating rod is rotatably provided in the circular box, and a rotating disk is fixedly provided on the outer sleeve of the third rotating rod, the rotating disk is rotatably provided in the circular box, a plurality of liquid guide grooves are provided on the circumference of the rotating disk, one end of the second transmission belt is connected to the outer sleeve of the third rotating rod, and the other end of the second transmission belt is transmission-connected to the fourth rotating rod, the fourth rotating rod is rotatably provided on the sensor, and a rotating disk is fixedly provided on the outer sleeve of the fourth rotating rod, and a plurality of cleaning brushes are provided on the circumference of the rotating disk.

[0015] Furthermore, the rotating disk is provided with several traction mechanisms, and the traction mechanisms include a traction block, which is movably inserted in the sliding groove, and the sliding groove is opened on the rotating disk, one end of the guide support assembly is fixedly connected to the upper end surface of the traction block, and the other end of the guide support assembly is fixedly connected to the top wall of the sliding groove, and the side wall of the traction block is provided with an inclined step, and the inclined step is provided with several traction protrusions.

[0016] Furthermore, the guide support assembly includes a guide support rod, a guide support tube and a guide support spring. The guide support rod is movably inserted in the guide support tube, the guide support spring is wrapped and connected to the outside of the guide support rod, and the two ends of the guide support spring are respectively fixedly connected to the side wall of the guide support rod and the outer wall of the guide support tube.

[0017] (3) Beneficial effects:

[0018] The present invention improves the existing infusion device structure. The improved infusion device can prevent blood backflow during infusion, which will not scare the patient and cause the patient to worry and feel uneasy. At the same time, it will not cause the blood flowing back into the infusion device to coagulate into clots, thereby preventing blood clots from entering the human body, thereby protecting the patient.

[0019] The anti-blood backflow mechanism provided in the present invention is used to prevent the blood backflow phenomenon. Specifically, when liquid passes through the sensor, the sensor will sense the passage of liquid and control the electromagnet to be energized to generate magnetism. Under the action of magnetism, it will attract the iron block and rotate the rotating plate clockwise through the iron block. The rotation of the rotating plate will cause the rotating plate to separate from the inclined plate, so that the falling liquid can pass through the rotating plate and the inclined plate into the first infusion tube to carry out the infusion process. When no liquid passes through the sensor, the electromagnet is powered off and loses its magnetism. At this time, under the push of the first support spring, the rotating plate is reset and contacts the inclined plate, thereby achieving the blocking of the support box. This can avoid the blood backflow phenomenon caused by the blood pressure being greater than the pressure above the rotating plate.

[0020] The boosting mechanism provided in the present invention is used to prevent blood backflow, and at the same time, when the rotating plate and the inclined plate realize the blocking of the support box, the liquid in the first infusion tube is pushed into the body, thereby avoiding waste. Specifically, when there is liquid passing through the sensor, the boosting plug will move upward to the outside of the fixed tube, so that the liquid can smoothly move downward through the first infusion tube. When there is no liquid passing through the sensor, the first support spring pushes the rotating plate to perform a reset movement. The resetting of the rotating plate will drive the arc rod to rotate counterclockwise. The movement of the arc rod will drive the boosting plug downward through the combined structure of the arc rack, the first gear, the first rotating rod, the first transmission belt, the second rotating rod, the second gear, the straight rack and the moving rod, and enter the fixed tube to complete the blocking of the fixed tube. In the process of the boosting plug downwardly entering the fixed tube, the liquid in the fixed tube and the first infusion tube will be pushed into the body, preventing waste of resources. When the boosting plug completes the blocking of the fixed tube, blood backflow can be prevented.

[0021] The driving mechanism provided in the present invention is used to clean the inner wall of the sensor to prevent the sediment in the liquid from being deposited on the inner wall of the sensor. At the same time, the structural design of the driving mechanism is reasonable, and the cleaning process can be realized without external power. Specifically, during the downward movement of the liquid, it will enter the liquid guide groove and push the rotating disk through the liquid guide groove to rotate clockwise. The rotation of the rotating disk will drive the cleaning brush to rotate through the combination of the third rotating rod, the second transmission belt, the fourth rotating rod and the rotating disk. The rotation of the cleaning brush will clean the inner wall of the sensor, thereby preventing the solid matter in the liquid from being deposited on the inner wall of the sensor, thereby ensuring that the sensor always has a good sensing effect.

[0022] The traction mechanism provided in the present invention will act on the traction mechanism during the rotation of the cleaning brush, and assist the rotating disk to rotate through the traction mechanism, thereby accelerating the rapid movement of the liquid above the rotating disk to the bottom, avoiding the situation where the infusion set is blocked due to equipment reasons, and ensuring that the liquid can smoothly move downward through the rotating disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of an embodiment of the anti-blood-backflow infusion device of the present invention;

[0024] Figure 2 This is the anti-blood backflow infusion device of the present invention Figure 1 Schematic diagram of the structure of the central anti-blood return mechanism;

[0025] Figure 3 This invention is an anti-blood backflow infusion device Figure 2 A magnified schematic diagram of the structure in the middle;

[0026] Figure 4This is a schematic cross-sectional view of the driving mechanism of the anti-blood-back infusion device of the present invention;

[0027] Figure 5 This is a front view structural diagram of the driving mechanism of the anti-blood-back infusion device of the present invention;

[0028] Figure 6 This is a schematic structural diagram of the traction mechanism in the anti-blood-back infusion device of the present invention;

[0029] Figure 7 This invention is an anti-blood backflow infusion device Figure 6 A magnified schematic diagram of the structure B in the middle.

[0030] The reference numerals are as follows:

[0031] First infusion tube 1, second infusion tube 2, anti-blood backflow mechanism 3, support box 31, sensor 32, trumpet-shaped guide tube 33, rotating plate 34, first support spring 35, electromagnet 36, iron block 37, tilting plate 38, first magnet 39, second magnet 310, boosting mechanism 4, arc rod 41, arc rack 42, first gear 43, first rotating rod 44, first transmission belt 45, second rotating rod 46, second gear 47, straight rack 48, moving rod 49, boosting mechanism 4 Press plug 410, fixed tube 411, limiting ring 412, transverse rod 413, second support spring 414, driving mechanism 5, circular box 51, third rotating rod 52, liquid guide groove 53, second transmission belt 54, fourth rotating rod 55, rotating disk 56, cleaning brush 57, traction mechanism 6, traction block 61, inclined step 62, traction protrusion 63, sliding groove 64, guide support assembly 65, guide support rod 651, guide support cylinder 652, guide support spring 653. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-7 The present invention is further described with examples:

[0033] A blood-backflow prevention infusion set includes a first infusion tube 1 and a blood-backflow prevention mechanism 3 connected to the first infusion tube 1. The blood-backflow prevention mechanism 3 is connected to a second infusion tube 2 at one end away from the first infusion tube 1. The first infusion tube 1, the second infusion tube 2 and the blood-backflow prevention mechanism 3 are connected to each other, and the blood-backflow prevention mechanism 3 is used to prevent the liquid in the first infusion tube 1 and the second infusion tube 2 from flowing back. The present invention improves the existing infusion set structure. The improved infusion set can prevent blood-back during infusion, which will not scare the patient and cause the patient to worry and feel uneasy. At the same time, it will not cause the blood flowing back into the infusion set to coagulate into clots, thereby preventing blood clots from entering the human body, thereby protecting the patient.

[0034] In this embodiment, the anti-backflow mechanism 3 includes a support box 31 and a sensor 32 arranged in the support box 31 and connected to the second infusion tube 2. A trumpet-shaped guide tube 33 is provided in the support box 31, and the upper end of the first infusion tube 1 is connected to the trumpet-shaped guide tube 33. An anti-backflow component is provided between the trumpet-shaped guide tube 33 and the sensor 32. When no liquid flows through the sensor 32, the anti-backflow component is used to block the support box 31 to achieve backflow of liquid in the first infusion tube 1 and the second infusion tube 2. The anti-backflow component includes a rotating plate 34 hinged at one end on the inner side wall of the support box 31, the other end of the rotating plate 34 is abutted against an inclined plate 38, and the inclined upper end of the inclined plate 38 is fixedly connected to the inner side wall of the support box 31, and one end of the first support spring 35 and the electromagnet 36 are fixedly connected to the lower end surface of the rotating plate 34, and the other end of the first support spring 35 is fixedly connected to the trumpet-shaped guide tube 33 The horn-shaped guide tube 33 is provided with an iron block 37 matching the electromagnet 36. The anti-blood backflow mechanism 3 set in the present invention is used to prevent blood backflow. Specifically, when liquid passes through the sensor 32, the sensor 32 will sense the passage of liquid and control the electromagnet 36 to be energized to generate magnetism. Under the action of magnetism, the iron block 37 will be attracted and the rotating plate 34 will be rotated clockwise by the iron block 37. The rotation of the rotating plate 34 will cause the rotating plate 34 to separate from the inclined plate 38, so that the falling liquid can pass through the rotating plate 34 and the inclined plate 38 into the first infusion tube 1 for the infusion process. When no liquid passes through the sensor 32, the electromagnet 36 is powered off and loses its magnetism. At this time, under the push of the first support spring 35, the rotating plate 34 is reset and contacts the inclined plate 38, thereby achieving the blocking of the support box 31, which can avoid the blood backflow caused by the blood pressure being greater than the pressure above the rotating plate 34.

[0035] In this embodiment, the contact points of the rotating plate 34 and the inclined plate 38 are respectively inlaid with a second magnet 310 and a first magnet 39. The second magnet 310 and the first magnet 39 are arranged to be in conflict with each other on the side close to each other. The arrangement of the second magnet 310 and the first magnet 39 can make the rotating plate 34 and the inclined plate 38 contact more closely.

[0036] In this embodiment, a booster mechanism 4 is provided in the anti-blood backflow mechanism 3, and the booster mechanism 4 includes an arc-shaped rod 41 fixed on the rotating plate 34, and the arc-shaped rod 41 is movably plugged into the trumpet-shaped guide tube 33, and an arc-shaped rack 42 is fixedly connected to the arc-shaped rod 41, and the arc-shaped rack 42 is engaged with the first gear 43, and the first gear 43 is fixedly sleeved outside the first rotating rod 44, and the first rotating rod 44 is rotatably set in the support box 31, and the outer shell of the support box 31 is connected to one end of the first transmission belt 45, and the other end of the first transmission belt 45 is transmission-connected to the second The rotating rod 46, the second rotating rod 46 is rotatably arranged in the first infusion tube 1, and the second rotating rod 46 is fixedly sleeved with a second gear 47, the second gear 47 is meshed with a straight rack 48, and the straight rack 48 is fixedly arranged on the side wall of the moving rod 49, the upper end of the moving rod 49 is fixedly connected with a booster plug 410, and the booster plug 410 is movably arranged in a fixed tube 411, the fixed tube 411 is connected to the upper end of the first infusion tube 1, and the fixed tube 411 is connected to the trumpet-shaped guide tube 33. The booster mechanism 4 provided in the present invention is used to prevent The effect of stopping bleeding is achieved. At the same time, when the rotating plate 34 and the tilting plate 38 seal the support box 31, the liquid in the first infusion tube 1 is pushed into the body, thereby avoiding waste. Specifically, when liquid passes through the sensor 32, the booster plug 410 moves upward to the outside of the fixed tube 411, so that the liquid can smoothly pass through the first infusion tube 1 and move downward. When there is no liquid passing through the sensor 32, the first support spring 35 pushes the rotating plate 34 to reset. The reset of the rotating plate 34 will cause the arc rod 41 to rotate counterclockwise, and the arc rod 41 Movement will carry the boost plug 410 downward through the combined structure of the arc-shaped rack 42, the first gear 43, the first rotating rod 44, the first transmission belt 45, the second rotating rod 46, the second gear 47, the straight rack 48 and the moving rod 49, enter the fixed tube 411, and complete the blocking of the fixed tube 411. In the process of the boost plug 410 downward entering the fixed tube 411, it will push the liquid in the fixed tube 411 and the first infusion tube 1 into the body to prevent waste of resources. When the boost plug 410 completes the blocking of the fixed tube 411, it can prevent blood backflow.

[0037] In this embodiment, the boosting mechanism 4 also includes a limiting ring 412, which is movably mounted on the outside of the moving rod 49, and one end of a transverse rod 413 is fixedly connected to the outer wall of the limiting ring 412, and the other end of the transverse rod 413 is fixedly connected to the inner wall of the first infusion tube 1. A second support spring 414 is wrapped around the outside of the moving rod 49, and the two ends of the second support spring 414 are respectively fixedly connected to the side wall of the moving rod 49 and the lower end face of the limiting ring 412.

[0038] In this embodiment, a driving mechanism 5 is provided in the anti-blood backflow mechanism 3, and the driving mechanism 5 includes a circular box 51 fixedly plugged into the second infusion tube 2, a third rotating rod 52 is rotatably provided in the circular box 51, and a rotating disk is fixedly sleeved outside the third rotating rod 52, the rotating disk is rotatably provided in the circular box 51, and a plurality of liquid guide grooves 53 are provided on the circumference of the rotating disk, the outer surface of the third rotating rod 52 is connected to one end of the second transmission belt 54, and the other end of the second transmission belt 54 is transmission-connected to the fourth rotating rod 55, the fourth rotating rod 55 is rotatably provided on the sensor 32, and a rotating disk 56 is fixedly sleeved outside the fourth rotating rod 55, and a plurality of cleaning brushes 57 are provided on the circumference of the rotating disk 56. The driving mechanism 5 is used to clean the inner wall of the sensor 32 to prevent the sediment in the liquid from being deposited on the inner wall of the sensor 32. At the same time, the structural design of the driving mechanism 5 is reasonable, and the cleaning process can be realized without external power. Specifically, during the downward movement of the liquid, it will enter the liquid guide groove 53 and push the rotating disk through the liquid guide groove 53 to rotate clockwise. The rotation of the rotating disk will drive the cleaning brush 57 to rotate through the combination of the third rotating rod 52, the second transmission belt 54, the fourth rotating rod 55 and the rotating disk 56. The rotation of the cleaning brush 57 will clean the inner wall of the sensor 32, thereby preventing the solid matter in the liquid from being deposited on the inner wall of the sensor 32, thereby ensuring that the sensor 32 always has a good sensing effect.

[0039] In this embodiment, a plurality of traction mechanisms 6 are provided on the rotating disk, and the traction mechanism 6 includes a traction block 61, and the traction block 61 is movably inserted in the sliding groove 64, and the sliding groove 64 is opened on the rotating disk. One end of the guide support assembly 65 is fixedly connected to the upper end surface of the traction block 61, and the other end of the guide support assembly 65 is fixedly connected to the top wall of the sliding groove 64. The side wall of the traction block 61 is provided with an inclined step 62, and the inclined step 62 is provided with a plurality of traction protrusions 63. The traction mechanism 6 provided in the present invention will act on the traction mechanism 6 during the rotation of the cleaning brush 57, and assist the rotating disk to rotate through the traction mechanism 6, thereby accelerating the rapid movement of the liquid above the rotating disk to the bottom, avoiding the situation where the infusion set is blocked due to equipment reasons, thereby ensuring that the liquid can smoothly move downward through the rotating disk.

[0040] In this embodiment, the guide support assembly 65 includes a guide support rod 651, a guide support tube 652 and a guide support spring 653. The guide support rod 651 is movably inserted in the guide support tube 652, and the guide support spring 653 is wound and connected to the outside of the guide support rod 651, and the two ends of the guide support spring 653 are respectively fixedly connected to the side wall of the guide support rod 651 and the outer side wall of the guide support tube 652. The setting of the guide support assembly 65 can not only play a guiding support role for the movement of the traction block 61, but also provide power for the reset of the traction block 61.

[0041] Beneficial effects of the present invention:

[0042] The present invention improves the existing infusion device structure. The improved infusion device can prevent blood backflow during infusion, which will not scare the patient and cause the patient to worry and feel uneasy. At the same time, it will not cause the blood flowing back into the infusion device to coagulate into clots, thereby preventing blood clots from entering the human body, thereby protecting the patient.

[0043] The anti-blood backflow mechanism 3 provided in the present invention is used to prevent blood backflow. Specifically, when liquid passes through the sensor 32, the sensor 32 will sense the passage of liquid and control the electromagnet 36 to be energized to generate magnetism. Under the action of magnetism, the iron block 37 will be attracted and the rotating plate 34 will be rotated clockwise by the iron block 37. The rotation of the rotating plate 34 will cause the rotating plate 34 to separate from the inclined plate 38, so that the falling liquid can pass through the rotating plate 34 and the inclined plate 38 into the first infusion tube 1 to carry out the infusion process. When no liquid passes through the sensor 32, the electromagnet 36 is powered off and loses its magnetism. At this time, under the push of the first support spring 35, the rotating plate 34 is reset and contacts the inclined plate 38, thereby achieving the blocking of the support box 31, so as to avoid the blood backflow phenomenon caused by the blood pressure being greater than the pressure above the rotating plate 34.

[0044] The boosting mechanism 4 provided in the present invention is used to prevent blood from returning. At the same time, when the rotating plate 34 and the inclined plate 38 seal the support box 31, the liquid in the first infusion tube 1 is pushed into the body, thereby avoiding waste. Specifically, when liquid passes through the sensor 32, the boosting plug 410 will move upward to the outside of the fixed tube 411, so that the liquid can smoothly pass through the first infusion tube 1 and move downward. When there is no liquid passing through the sensor 32, the first support spring 35 pushes the rotating plate 34 to perform a reset movement. The reset of the rotating plate 34 will bring the arc rod 41 to rotate counterclockwise The rotation and movement of the arc rod 41 will carry the boost plug 410 downward through the combined structure of the arc rack 42, the first gear 43, the first rotating rod 44, the first transmission belt 45, the second rotating rod 46, the second gear 47, the straight rack 48 and the moving rod 49, enter the fixed tube 411, and complete the blocking of the fixed tube 411. In the process of the boost plug 410 downward entering the fixed tube 411, it will push the liquid in the fixed tube 411 and the first infusion tube 1 into the body, preventing waste of resources. When the boost plug 410 completes the blocking of the fixed tube 411, it can prevent blood backflow.

[0045] The driving mechanism 5 provided in the present invention is used to clean the inner wall of the sensor 32 to prevent the sediment in the liquid from being deposited on the inner wall of the sensor 32. At the same time, the structural design of the driving mechanism 5 is reasonable, and the cleaning process can be realized without external power. Specifically, during the downward movement of the liquid, it will enter the liquid guide groove 53 and push the rotating disk through the liquid guide groove 53 to rotate clockwise. The rotation of the rotating disk will rotate the cleaning brush 57 through the combination of the third rotating rod 52, the second transmission belt 54, the fourth rotating rod 55 and the rotating disk 56. The rotation of the cleaning brush 57 will clean the inner wall of the sensor 32, thereby preventing the solid matter in the liquid from being deposited on the inner wall of the sensor 32, thereby ensuring that the sensor 32 always has a good sensing effect.

[0046] The traction mechanism 6 provided in the present invention will act on the traction mechanism 6 during the rotation of the cleaning brush 57, and assist the rotating disk to rotate through the traction mechanism 6, thereby accelerating the rapid movement of the liquid above the rotating disk to the bottom, avoiding the situation where the infusion pump is blocked due to equipment reasons, thereby ensuring that the liquid can smoothly move downward through the rotating disk.

[0047] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. An anti-blood backflow infusion device, characterized in that: The invention comprises a first infusion tube (1) and a blood-back prevention mechanism (3) connected to the first infusion tube (1); the blood-back prevention mechanism (3) is connected to a second infusion tube (2) at one end away from the first infusion tube (1); the first infusion tube (1), the second infusion tube (2) and the blood-back prevention mechanism (3) are connected to each other, and the blood-back prevention mechanism (3) is used to prevent the liquid in the first infusion tube (1) and the second infusion tube (2) from flowing back; the blood-back prevention mechanism (3) comprises a support box (31) and a sensor (32) provided in the support box (31) and connected to the second infusion tube (2); a trumpet-shaped guide tube (33) is provided in the support box (31); the upper end of the first infusion tube (1) is connected to the trumpet-shaped guide tube (33) is connected, and a backflow prevention component is provided between the trumpet-shaped guide tube (33) and the sensor (32). When no liquid flows through the sensor (32), the backflow prevention component is used to block the support box (31) to prevent the backflow of liquid in the first infusion tube (1) and the second infusion tube (2); the backflow prevention component includes a rotating plate (34) hinged at one end on the inner wall of the support box (31), the other end of the rotating plate (34) is abutted against an inclined plate (38), and the inclined upper end of the inclined plate (38) is fixedly connected to the inner wall of the support box (31), and one end of a first support spring (35) and an electromagnet (36) are fixedly connected to the lower end surface of the rotating plate (34), and the first support spring (3 5) is fixedly connected to the trumpet-shaped guide tube (33), and the trumpet-shaped guide tube (33) is provided with an iron block (37) matching the electromagnet (36); a booster mechanism (4) is provided in the anti-blood backflow mechanism (3); the booster mechanism (4) includes an arc rod (41) fixed on the rotating plate (34), and the arc rod (41) is movably plugged into the trumpet-shaped guide tube (33), and an arc rack (42) is fixedly connected to the arc rod (41), and the arc rack (42) is meshed with the first gear (43), the first gear (43) is fixedly sleeved outside the first rotating rod (44), the first rotating rod (44) is rotatably set in the support box (31), and the support box (31) is covered One end of the first transmission belt (45) is connected, and the other end of the first transmission belt (45) is transmission-connected to a second rotating rod (46), the second rotating rod (46) is rotatably arranged in the first infusion tube (1), and a second gear (47) is fixedly sleeved outside the second rotating rod (46), the second gear (47) is meshed with a straight rack (48), and the straight rack (48) is fixedly arranged on the side wall of the moving rod (49), the upper end of the moving rod (49) is fixedly connected to a boosting plug (410), and the boosting plug (410) is movably arranged in a fixed tube (411), the fixed tube (411) is connected to the upper end of the first infusion tube (1), and the fixed tube (411) is connected to the trumpet-shaped guide tube (33).

2. The anti-blood-back infusion device according to claim 1, characterized in that: The contact points of the rotating plate (34) and the inclined plate (38) are respectively inlaid with a second magnet (310) and a first magnet (39), and the second magnet (310) and the first magnet (39) are arranged to contact each other on their adjacent sides.

3. The anti-blood-backflow infusion device according to claim 2, characterized in that: The boosting mechanism (4) further comprises a limiting ring (412), the limiting ring (412) being movably sleeved on the outside of the moving rod (49), and one end of a transverse rod (413) being fixedly connected to the outer side wall of the limiting ring (412), and the other end of the transverse rod (413) being fixedly connected to the inner side wall of the first infusion tube (1), and a second support spring (414) being wound around the outside of the moving rod (49), and the two ends of the second support spring (414) being fixedly connected to the side wall of the moving rod (49) and the lower end surface of the limiting ring (412), respectively.

4. The anti-blood-backflow infusion device according to claim 3, characterized in that: A driving mechanism (5) is provided in the anti-blood backflow mechanism (3), and the driving mechanism (5) includes a circular box (51) fixedly plugged into the second infusion tube (2), a third rotating rod (52) is rotatably provided in the circular box (51), and a rotating disk is fixedly provided on the outer sleeve of the third rotating rod (52), the rotating disk is rotatably provided in the circular box (51), and a plurality of liquid guide grooves (53) are provided on the circumference of the rotating disk, one end of the second transmission belt (54) is connected to the outer sleeve of the third rotating rod (52), and the other end of the second transmission belt (54) is transmission-connected to a fourth rotating rod (55), the fourth rotating rod (55) is rotatably provided on the sensor (32), and a rotating disk (56) is fixedly provided on the outer sleeve of the fourth rotating rod (55), and a plurality of cleaning brushes (57) are provided on the circumference of the rotating disk (56).

5. The anti-blood-backflow infusion device according to claim 4, characterized in that: The rotating disk is provided with a plurality of traction mechanisms (6), the traction mechanisms (6) comprising a traction block (61), the traction block (61) being movably inserted into a sliding groove (64), and the sliding groove (64) being provided on the rotating disk, one end of a guide support assembly (65) being fixedly connected to the upper end surface of the traction block (61), and the other end of the guide support assembly (65) being fixedly connected to the top wall of the sliding groove (64), and an inclined step (62) being provided on the side wall of the traction block (61), and a plurality of traction protrusions (63) being provided on the inclined step (62).

6. The anti-blood-backflow infusion device according to claim 5, characterized in that: The guide support assembly (65) comprises a guide support rod (651), a guide support tube (652) and a guide support spring (653); the guide support rod (651) is movably inserted into the guide support tube (652); the guide support spring (653) is wound around and connected to the outside of the guide support rod (651); and the two ends of the guide support spring (653) are respectively fixedly connected to the side wall of the guide support rod (651) and the outer side wall of the guide support tube (652).

Images