Minimally invasive closed drainage device special for pneumothorax

Abstract

The invention belongs to the technical field of clinical medical instruments, and particularly relates to a special minimally invasive closed drainage device for pneumothorax, which comprises a puncture hard cannula, the bottom end of the puncture hard cannula is fixedly communicated with a hollow connector, the inner walls of the puncture hard cannula and the hollow connector are jointly and movably sleeved with a cannula core, and the connecting end of the hollow connector is hermetically connected with a drainage tube. The device adopts a minimally invasive mode, does not need to cut the skin in a large range, reduces treatment injury, relieves puncture drainage pain of a pneumothorax patient, prevents the patient from twisting due to pain, reduces the operation difficulty of a doctor, and improves the installation convenience and efficiency of the pneumothorax pneumatosis drainage device; in addition, the special minimally invasive closed drainage device for pneumothorax not only has the functions of early warning of connection sealing failure of the drainage tube and the drainage bottle and early warning of excessive effusion amount of the drainage bottle, but also has the function of improving the use stability of the device, can effectively improve the pneumothorax pneumothorax drainage effect and reliability, and improves the safety of pneumothorax pneumothorax drainage of a patient.

Description

Technical Field

[0001] The invention belongs to the technical field of clinical medical devices, and in particular relates to a minimally invasive closed drainage device dedicated to pneumothorax. Background Art

[0002] The current treatment method for drainage of pneumothorax is to make a 1.5-2 cm skin incision parallel to the upper edge of the ribs at the 2nd intercostal space outside the midclavicular line or the 4th-5th intercostal space at the anterior axillary line under local anesthesia, puncture the pleural cavity with a trocar, remove the needle core, and insert the sterile rubber tube into the chest cavity through the cannula. However, since there is currently no drainage catheter specifically for pneumothorax, a large-sized urinary catheter or silicone tube is generally used clinically, and a duckbill-shaped opening is cut at the front end, and several side holes are cut for drainage. Another existing method is to bluntly separate the intercostal tissue to reach the pleura after cutting the skin, and then pierce the pleura to directly send the catheter into the pleural cavity for drainage, thereby guiding out the air and fluid in the pneumothorax, and the fluid drained by the above-mentioned drainage tube will be transported to the drainage bottle for temporary storage.

[0003] Since the above methods require large skin incisions and require large cannulas or hemostats to expand the pectoral muscles and separate the subcutaneous muscle tissue to the pleural cavity to facilitate the insertion of the catheter, the operation process is very damaging to the patient and causes great pain to the patient during clinical operation. The patient will scream or twist due to pain, which inevitably increases the difficulty of the doctor's operation and affects the convenience and efficiency of the installation of the pneumothorax drainage device. Secondly, the drainage bottles of current pneumothorax drainage devices are mostly placed directly on the ground, which makes the drainage bottles less stable. When the patient turns over in the bed, the posture of the drainage tube will change, which will cause the drainage bottle placed on the ground to fall over. Moreover, when the patient gets out of bed and moves around, in order to ensure the drainage effect of the drainage bottle, the height of the drainage bottle should not exceed the patient's knees. This means that the patient needs to lift the drainage bottle by himself when getting out of bed. At this time, the suspended drainage bottle is easily disturbed by the patient's walking and is very likely to be separated from the drainage tube, thereby affecting the existing drainage effect and causing the drainage system to fail to seal, resulting in external air entering the patient's chest cavity and causing infection. This not only affects the effect of pneumothorax drainage, but also affects the safety of pneumothorax drainage for patients.

[0004] To this end, we proposed a minimally invasive closed drainage device specifically for pneumothorax to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a minimally invasive closed drainage device specifically for pneumothorax in order to solve the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a minimally invasive closed drainage device for pneumothorax, comprising a puncture hard cannula, the bottom end of the puncture hard cannula is fixedly connected with a hollow connector, the inner walls of the puncture hard cannula and the hollow connector are movably sleeved with a cannula core, the connecting end of the hollow connector is sealed and connected with a drainage tube, the bottom end of the drainage tube is sealed and sleeved with a drainage bottle, and the outer wall of the puncture hard cannula is movably sleeved with a limiting mechanism; The tube wall of the drainage tube is movably sleeved with a first stabilizing mechanism; The outer wall of the drainage bottle is movably sleeved with a second stabilizing mechanism.

[0007] In the above-mentioned minimally invasive closed drainage device specially used for pneumothorax, the limiting mechanism includes an internal threaded ring and a rubber ring sheet which are movably connected to the outer wall of the puncture hard sleeve, the outer side of the rubber ring sheet is fixedly connected to an external threaded ring which matches the internal threaded ring, and the inner wall of the internal threaded ring is fixedly connected to an annular sealing rubber.

[0008] In the above-mentioned minimally invasive closed drainage device specially used for pneumothorax, the first stabilizing mechanism comprises a rubber sleeve movably connected to the outer wall of the drainage tube, the outer wall of the rubber sleeve is fixedly connected with a connecting ring, the inner wall of the connecting ring is movably connected with an elastic cloth belt, and the outer walls on both sides of the elastic cloth belt are respectively fixedly connected with needle hair Velcro pieces and cotton hair Velcro pieces that cooperate with each other.

[0009] In the above-mentioned minimally invasive closed drainage device dedicated to pneumothorax, the second stabilizing mechanism includes a rubber frame movably connected to the outer wall of the drainage bottle, the outer wall of the rubber frame is fixedly sleeved with a connecting frame, the bottom end of the connecting frame is fixedly connected with a U-shaped insulating frame, the two vertical parts of the U-shaped insulating frame are commonly movably sleeved with a movable plate, the outer wall of the movable plate is provided with two rectangular through holes that match the vertical parts of the U-shaped insulating frame, the bottom end of the U-shaped insulating frame is fixedly connected with an early warning mechanism for monitoring the tilt or overweight state of the drainage bottle, the outer walls of the two ends of the U-shaped insulating frame are fixedly connected with extension rods, the rod wall of the extension rod is fixedly sleeved with rolling bearings, the outer walls of the outer rings of the two rolling bearings are commonly sleeved with an insulating positioning cylinder, and the outer wall of the bottom end of the insulating positioning cylinder is fixedly connected with a positioning mechanism.

[0010] In the above-mentioned minimally invasive closed drainage device dedicated to pneumothorax, the early warning mechanism includes a pressure sensor, a lithium battery module and a buzzer fixedly connected to the outer wall of the bottom end of the U-shaped insulating frame, the top force-bearing end of the pressure sensor is in contact with the lower surface of the movable plate, the bottom end of the U-shaped insulating frame is provided with a mounting hole, and the hole wall of the mounting hole is fixedly connected to a micro PLC controller, the lower surface of the U-shaped insulating frame is fixedly connected to a conductive rod, the inner wall of the insulating positioning cylinder is fixedly connected to a conductive cylinder, and the bottom end of the conductive rod is located at the central axis position of the conductive cylinder.

[0011] In the above-mentioned minimally invasive closed drainage device specially used for pneumothorax, the positioning mechanism includes an annular cover fixedly connected to the inner wall of the bottom end of an insulating positioning tube, a plurality of negative pressure suction cups are fixedly connected to the lower surface of the insulating positioning tube, the air guide ends of the plurality of negative pressure suction cups all pass through the inner wall of the insulating positioning tube and are located inside the annular cover, a control valve is fixedly connected to the top end of the annular cover, a micro air pump is fixedly connected to the upper surface of the annular cover, the air inlet end of the micro air pump is fixedly connected to the top end of the control valve through a connecting pipe, a connecting plate is fixedly connected to the outer wall of the insulating positioning tube, two rope holes are provided on the outer wall of the connecting plate, and two connecting ropes matching the rope holes are fixedly connected to the outer wall of the insulating positioning tube.

[0012] In the above-mentioned minimally invasive closed drainage device specially used for pneumothorax, a puncture tip is provided at the top end of the sleeve core, and a puncture chamfer is provided at the top end of the puncture hard sleeve.

[0013] In the above-mentioned minimally invasive closed drainage device for pneumothorax, the side of the rubber ring sheet away from the external threaded ring is coated with an adhesive glue layer, and the outer side of the adhesive glue layer is connected to a release paper protective layer.

[0014] Compared with existing technologies, the advantages of the minimally invasive closed drainage device for pneumothorax are: By providing the puncture hard cannula, cannula core and limiting mechanism, when a pneumothorax patient needs puncture to discharge chest gas, the cannula core is first inserted into the inside of the puncture hard cannula to improve the structural strength of the puncture hard cannula, and due to the assistance of the puncture tip of the cannula core, the puncture effect of the puncture hard cannula can be improved. Finally, the cannula core carries the puncture hard cannula and is inserted into the chest gas accumulation of the pneumothorax patient, and then the cannula core is pulled out, and at the same time, the drainage tube is connected to the puncture hard cannula through a hollow connector, and the bottom of the drainage tube is connected to the drainage bottle, so that the puncture hard cannula can discharge the chest gas and fluid of the pneumothorax patient into the drainage bottle, and the stability of the puncture hard cannula is ensured by the limiting mechanism. The method for draining chest gas in pneumothorax patients adopts a minimally invasive approach, does not require large-scale incision of the patient's skin, reduces the patient's treatment damage, and reduces the pain of the pneumothorax patient during puncture to discharge gas, avoids the patient from screaming or twisting due to pain, reduces the doctor's operation difficulty, and improves the convenience and efficiency of installing the pneumothorax gas drainage device.

[0015] By setting up the first stabilizing mechanism, when the pneumothorax patient is in the process of removing chest air, the two ends of the elastic cloth belt are wrapped around the waist of the pneumothorax patient and fixed by the needle hair Velcro patch and the cotton wool Velcro patch. In addition, the elastic cloth belt and the rubber sleeve can cooperate to limit the middle part of the drainage tube, so as to avoid the adverse interference of the puncture hard cannula caused by the shaking of the drainage tube, and try to ensure the stability of the position of the puncture hard cannula, thereby improving the reliability of the removal of chest air in pneumothorax patients.

[0016] Through the second stabilizing mechanism, early warning mechanism and positioning mechanism, if the pneumothorax patient discharges chest air on the bed, the drainage bottle is placed on the floor next to the bed, and then the positioning mechanism is used to ensure the stable arrangement of the insulating positioning cylinder. If the pneumothorax patient changes position too quickly or drastically on the bed, the first stabilizing mechanism will pull the drainage bottle through the drainage tube, and the drainage bottle will deflect on the U-shaped frame, and the buzzer in the early warning mechanism will be triggered to power on and alarm, reminding the pneumothorax patient that the movement amplitude is too large, which may easily cause the sealing connection between the drainage tube and the drainage bottle to fail. If the pneumothorax patient needs to get out of bed and walk, the connecting piece, rope hole and connecting The connecting rope fixes the insulating positioning cylinder at the patient's ankle, so the patient does not need to lift the drainage tube and the drainage bottle, and the early warning mechanism can also monitor the external force on the drainage tube in real time, to avoid the failure of the seal connected to the drainage bottle due to the drainage tube being pulled by external force, and to avoid the invasion of outside air into the chest cavity of the pneumothorax patient to cause infection. This mechanism makes the minimally invasive closed drainage device dedicated to pneumothorax not only have the function of early warning of the failure of the seal connection between the drainage tube and the drainage bottle, but also has the function of improving the stability of the device, thereby effectively improving the effect and reliability of pneumothorax gas drainage, and improving the safety of pneumothorax gas drainage in patients.

[0017] By setting up the movable plate and pressure sensor, as the amount of fluid discharged along with the accumulated gas in the drainage bottle gradually increases, the weight of the drainage bottle also gradually increases. The pressure sensor can also detect the weight of the drainage bottle in real time, and send the detection result to the micro PLC controller in the form of an electrical signal. If the pressure sensor detects that the weight of the drainage bottle exceeds the warning threshold preset by the micro PLC controller, the micro PLC controller promptly controls the buzzer to power on and sound an early warning, reminding medical staff to replace the new drainage bottle in time to avoid excessive fluid accumulation in the drainage bottle and adversely interfere with the discharge of chest fluid in pneumothorax patients. This mechanism enables the minimally invasive closed drainage device dedicated to pneumothorax to have the function of early warning of excessive fluid accumulation in the drainage bottle, thereby improving the reliability of the use of the minimally invasive closed drainage device dedicated to pneumothorax. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a minimally invasive closed drainage device dedicated to pneumothorax provided by the present invention; Figure 2 It is a structural schematic diagram of the sleeve core part of the minimally invasive closed drainage device dedicated to pneumothorax provided by the present invention; Figure 3 It is a structural schematic diagram of a limiting mechanism in a minimally invasive closed drainage device dedicated to pneumothorax provided by the present invention; Figure 4 yes Figure 3 The structural diagram of part A in the figure; Figure 5 It is a structural schematic diagram of the second stabilizing mechanism part of the minimally invasive closed drainage device for pneumothorax provided by the present invention; Figure 6 yes Figure 5 Schematic diagram of the structure of part B.

[0019] In the figure: 1 puncture hard sleeve, 2 hollow connector, 3 sleeve core, 4 drainage tube, 5 limit mechanism, 51 internal thread ring, 52 rubber ring sheet, 53 annular sealing rubber, 54 external thread ring, 6 first stabilizing mechanism, 61 rubber sleeve, 62 connecting ring, 63 elastic cloth belt, 64 needle wool Velcro, 65 cotton wool Velcro, 7 second stabilizing mechanism, 71 rubber frame, 72 connecting frame, 73 U-shaped insulating frame, 74 moving plate, 75 extension rod, 76 rolling bearing, 77 insulating positioning cylinder, 8 early warning mechanism, 81 pressure sensor, 82 lithium battery module, 83 buzzer, 84 micro PLC controller, 85 conductive rod, 86 conductive cylinder, 9 positioning mechanism, 91 annular cover, 92 negative pressure suction cup, 93 control valve, 94 micro air pump, 95 connecting sheet, 96 rope hole, 97 connecting rope, 10 drainage bottle, 11 bonding glue layer, 12 release paper protective layer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1-Figure 6As shown, a minimally invasive closed drainage device dedicated to pneumothorax comprises a puncture hard cannula 1, the bottom end of the puncture hard cannula 1 is fixedly connected with a hollow connector 2, the inner walls of the puncture hard cannula 1 and the hollow connector 2 are movably sleeved with a cannula core 3, the top of the cannula core 3 is provided with a puncture tip, and the top of the puncture hard cannula 1 is provided with a puncture chamfer, thereby improving the puncture effect and reliability of the puncture hard cannula 1 and the cannula core 3, the connecting end of the hollow connector 2 is sealedly connected with a drainage tube 4, the bottom end of the drainage tube 4 is sealedly sleeved with a drainage bottle 10, the outer wall of the puncture hard cannula 1 is movably sleeved with a limiting mechanism 5, the limiting mechanism 5 comprises an internal threaded ring 51 and a rubber ring sheet 52 movably sleeved with the outer wall of the puncture hard cannula 1, The side of the rubber ring piece 52 away from the external threaded ring 54 is coated with an adhesive glue layer 11, and the outer side of the adhesive glue layer 11 is connected to a release paper protective layer 12. The adhesive glue layer 11 can improve the stability of the connection between the puncture hard sleeve 1 and the pneumothorax patient. The outer side of the rubber ring piece 52 is fixedly connected to an external threaded ring 54 that matches the internal threaded ring 51. The inner wall of the internal threaded ring 51 is fixedly connected to an annular sealing rubber 53. The annular sealing rubber 53 can not only ensure the stable arrangement of the puncture hard sleeve 1, but also ensure the protective effect of the puncture site. If the internal threaded ring 51 is opened, the puncture site of the pneumothorax patient can be conveniently sprayed with anti-inflammatory liquid through the external threaded ring 54 to ensure the health of the puncture site of the pneumothorax patient.

[0022] The tube wall of the drainage tube 4 is movably connected to a first stabilizing mechanism 6, and the first stabilizing mechanism 6 includes a rubber sleeve 61 movably connected to the outer wall of the drainage tube 4, the outer wall of the rubber sleeve 61 is fixedly connected to a connecting ring 62, the inner wall of the connecting ring 62 is movably connected to an elastic cloth belt 63, and the outer walls on both sides of the elastic cloth belt 63 are respectively fixedly connected to a needle hair Velcro piece 64 and a cotton hair Velcro piece 65 that cooperate with each other. This mechanism can effectively improve the stability of the drainage tube 4 during use, thereby ensuring the sealing of the connection between the two ends of the drainage tube 4.

[0023] The outer wall of the drainage bottle 10 is movably sleeved with a second stabilizing mechanism 7, which includes a rubber frame 71 movably connected to the outer wall of the drainage bottle 10, a connecting frame 72 is fixedly sleeved on the outer wall of the rubber frame 71, and a U-shaped insulating frame 73 is fixedly connected to the bottom end of the connecting frame 72. The two vertical parts of the U-shaped insulating frame 73 are movably sleeved with a movable plate 74, and the outer wall of the movable plate 74 is provided with two rectangular through holes that match the vertical parts of the U-shaped insulating frame 73. The bottom end of the U-shaped insulating frame 73 is fixedly connected to an early warning mechanism 8 for monitoring the tilt or overweight state of the drainage bottle 10, and the early warning mechanism 8 includes a fixed outer wall connected to the bottom end of the U-shaped insulating frame 73. The pressure sensor 81, the lithium battery module 82 and the buzzer 83 are connected, the top force-bearing end of the pressure sensor 81 contacts the lower surface of the movable plate 74, the bottom end of the U-shaped insulating frame 73 is provided with a mounting hole, and the hole wall of the mounting hole is fixedly connected with a micro PLC controller 84, the lower surface of the U-shaped insulating frame 73 is fixedly connected with a conductive rod 85, the inner wall of the insulating positioning cylinder 77 is fixedly connected with a conductive cylinder 86, and the bottom end of the conductive rod 85 is located at the central axis position of the conductive cylinder 86. This mechanism enables the minimally invasive closed drainage device dedicated to pneumothorax to have the function of warning of excessive effusion in the drainage bottle 10, thereby improving the minimally invasive closed drainage device dedicated to pneumothorax. The reliability of the device is improved. The outer walls of both ends of the U-shaped insulating frame 73 are fixedly connected with extension rods 75. The rod wall of the extension rod 75 is fixedly sleeved with a rolling bearing 76. The outer walls of the outer rings of the two rolling bearings 76 are jointly sleeved with an insulating positioning tube 77. The outer wall of the bottom end of the insulating positioning tube 77 is fixedly connected with a positioning mechanism 9. The positioning mechanism 9 includes an annular cover 91 fixedly connected to the inner wall of the bottom end of the insulating positioning tube 77. The lower surface of the insulating positioning tube 77 is fixedly connected with a plurality of negative pressure suction cups 92. The air guide ends of the plurality of negative pressure suction cups 92 all pass through the inner wall of the insulating positioning tube 77 and are located inside the annular cover 91. The top of the annular cover 91 is fixedly connected with a control valve 93, a micro air pump 94 is fixedly connected to the upper surface of the annular cover 91, and the air inlet end of the micro air pump 94 is fixedly connected to the top of the control valve 93 through a connecting pipe, and a connecting piece 95 is fixedly connected to the outer wall of the insulating positioning cylinder 77. Two rope holes 96 are provided on the outer wall of the connecting piece 95, and two connecting ropes 97 matched with the rope holes 96 are fixedly connected to the outer wall of the insulating positioning cylinder 77, which can improve the drainage stability of the drainage bottle 10 and prevent the drainage bottle 10 from tipping over. This mechanism enables the minimally invasive closed drainage device dedicated to pneumothorax to not only have the function of warning of sealing failure between the drainage tube 4 and the drainage bottle 10, but also has the function of improving the stability of the device during use.

[0024] The input circuit composed of the conductive rod 85 and the conductive tube 86 and the pressure sensor 81 are electrically connected to the input end of the micro PLC controller 84 through wires, and the buzzer 83, the micro air pump 94 and the control valve 93 are electrically connected to the output end of the micro PLC controller 84 through wires. The above-mentioned electrical connection box power-on equipment are all existing technologies and will not be repeated here.

[0025] The operating principle of the present invention is now described as follows: when a pneumothorax patient needs puncture to discharge chest gas, first, the cannula core 3 is inserted into the interior of the puncture hard cannula 1 to improve the structural strength of the puncture hard cannula 1, and due to the assistance of the puncture tip of the cannula core 3, the puncture effect of the puncture hard cannula 1 can be improved. Finally, the cannula core 3 carries the puncture hard cannula 1 and is inserted into the chest gas accumulation of the pneumothorax patient, then the cannula core 3 is pulled out, and at the same time, the drainage tube 4 is connected to the puncture hard cannula 1 through the hollow connector 2, and the bottom of the drainage tube 4 is connected to the drainage bottle 10, so that the puncture hard cannula 1 can discharge the chest gas and fluid of the pneumothorax patient into the drainage bottle 10, and at the same time, the release paper protective layer 12 is torn off, and the adhesive glue layer 11 is bonded to the skin of the pneumothorax patient at the puncture position, and finally The internal threaded ring 51 is rotatably connected with the external threaded ring 54, and the annular sealing rubber 53 is inserted into the external threaded ring 54. The annular sealing rubber 53 can not only ensure the stable arrangement of the puncture hard sleeve 1, but also ensure the protective effect of the puncture site. If the internal threaded ring 51 is opened, the anti-inflammatory liquid can be conveniently sprayed on the puncture site of the pneumothorax patient through the external threaded ring 54 to ensure the health of the puncture site of the pneumothorax patient. The chest air drainage method for pneumothorax patients adopts a minimally invasive method, without the need to cut the patient's skin on a large scale, reducing the patient's treatment damage, and at the same time reducing the pain of pneumothorax patients during puncture and drainage of air, avoiding patients from screaming or twisting due to pain, reducing the difficulty of doctors' operation, and at the same time improving the convenience and efficiency of installing the pneumothorax air drainage device; When the pneumothorax patient is removing the chest gas, the two ends of the elastic cloth belt 63 are wrapped around the waist of the pneumothorax patient and fixed by the needle hair Velcro patch 64 and the cotton wool Velcro patch 65. In addition, the elastic cloth belt 63 cooperates with the rubber sleeve 61 to limit the middle of the drainage tube 4, so as to prevent the shaking of the drainage tube 4 from causing adverse interference to the puncture hard sleeve 1, and to ensure the stability of the position of the puncture hard sleeve 1 as much as possible, thereby improving the reliability of chest drainage for pneumothorax patients; If the pneumothorax patient is on the bed and the chest air is discharged, the drainage bottle 10 is placed on the floor next to the bed, and then the negative pressure suction cup 92 at the bottom of the insulating positioning tube 77 contacts the floor, and the micro air pump 94 and the control valve 93 are powered on and started for 10 seconds through the control panel external to the micro PLC controller 84. The micro air pump 94 sucks the air inside the annular cover 91 through the control valve 93, so that the inside of the annular cover 91 is in a negative pressure environment. Then the negative pressure environment makes the negative pressure suction cup 92 tightly suck the floor, so that the insulating positioning tube 77 is firmly arranged. After the 10-second countdown is completed, the micro air pump 94 and the control valve 93 are powered off, and the control valve 93 is powered off and closed to ensure that the negative pressure suction cup 92 continues to tightly suck the floor to maintain stability. At the same time, if pneumothorax When the patient's position on the bed changes too quickly or greatly, the first stabilizing mechanism 6 will pull the drainage bottle 10 through the drainage tube 4, and the drainage bottle 10 will deflect through the connecting frame 72, the extension rod 75 and the rolling bearing 76, and drive the conductive rod 85 to deflect, so that the conductive rod 85 contacts the conductive tube 86, and then connects to an input circuit of the micro PLC controller 84, and the input circuit sends an electrical signal to the micro PLC controller 84. The micro PLC controller 84 controls the buzzer 83 to issue a sound warning in time according to the electrical signal, reminding the pneumothorax patient that the movement amplitude is too large, which may easily cause the sealing connection between the drainage tube 4 and the drainage bottle 10 to fail, and can prevent the drainage bottle 10 from tipping over and affecting the drainage effect and safety of the pneumothorax patient; If the pneumothorax patient needs to get out of bed and walk, the insulating positioning tube 77 is fixed to the patient's ankle through the connecting piece 95, the rope hole 96 and the connecting rope 97, so the patient does not need to pull the drainage tube 4 and the drainage bottle 10, and the early warning mechanism 8 can also monitor the drainage tube 4 in real time under the action of external force, so as to prevent the drainage tube 4 from being pulled by external force and the seal failure of the connection with the drainage bottle 10, thereby preventing the outside air from invading the chest cavity of the pneumothorax patient and causing infection. This mechanism enables the minimally invasive closed drainage device dedicated to pneumothorax to not only have the function of early warning of the seal failure of the connection between the drainage tube 4 and the drainage bottle 10, but also has the function of improving the stability of the device, thereby effectively improving the effect and reliability of pneumothorax gas drainage, and improving the safety of pneumothorax gas drainage for patients; In addition, through the cooperation of the movable plate 74 and the pressure sensor 81, when the amount of fluid discharged along with the accumulated gas in the drainage bottle 10 increases, its weight also gradually increases. The pressure sensor 81 detects the weight change in real time and sends the detection result to the micro PLC controller 84 in the form of an electrical signal. If the pressure sensor 81 detects that the weight of the drainage bottle 10 exceeds the warning threshold preset by the micro PLC controller 84, the micro PLC controller 84 promptly controls the buzzer 83 to power on and issue a sound warning, reminding medical staff to replace the new drainage bottle 10 in time to avoid excessive fluid accumulation in the drainage bottle 10 and causing adverse interference to the discharge of chest fluid in patients with pneumothorax. This mechanism enables the minimally invasive closed drainage device dedicated to pneumothorax to have the function of warning of excessive fluid accumulation in the drainage bottle 10, thereby improving the reliability of the use of the minimally invasive closed drainage device dedicated to pneumothorax.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A minimally invasive closed drainage device for pneumothorax, comprising a puncture hard cannula (1), characterized in that: The bottom end of the puncture hard sleeve (1) is fixedly connected to a hollow connector (2); the inner walls of the puncture hard sleeve (1) and the hollow connector (2) are movably sleeved with a sleeve core (3); the connecting end of the hollow connector (2) is sealedly connected to a drainage tube (4); the bottom end of the drainage tube (4) is sealedly sleeved with a drainage bottle (10); and the outer wall of the puncture hard sleeve (1) is movably sleeved with a limiting mechanism (5); The wall of the drainage tube (4) is movably sleeved with a first stabilizing mechanism (6); The outer wall of the drainage bottle (10) is movably sleeved with a second stabilizing mechanism (7).

2. The minimally invasive closed drainage device for pneumothorax according to claim 1, characterized in that: The limiting mechanism (5) comprises an internal threaded ring (51) and a rubber ring sheet (52) movably sleeved on the outer wall of the puncture hard sleeve (1); an external threaded ring (54) matching the internal threaded ring (51) is fixedly connected to the outer side of the rubber ring sheet (52); and an annular sealing rubber (53) is fixedly connected to the inner wall of the internal threaded ring (51).

3. The minimally invasive closed drainage device for pneumothorax according to claim 1, characterized in that: The first stabilizing mechanism (6) comprises a rubber sleeve (61) movably sleeved with the outer wall of the drainage tube (4); the outer wall of the rubber sleeve (61) is fixedly connected to a connecting ring (62); the inner wall of the connecting ring (62) is movably connected to an elastic cloth belt (63); and the outer walls on both sides of the elastic cloth belt (63) are respectively fixedly connected to a needle-hair Velcro patch (64) and a cotton-hair Velcro patch (65) that cooperate with each other.

4. The minimally invasive closed drainage device for pneumothorax according to claim 1, characterized in that: The second stabilizing mechanism (7) comprises a rubber frame (71) movably connected to the outer wall of the drainage bottle (10); a connecting frame (72) is fixedly sleeved on the outer wall of the rubber frame (71); a U-shaped insulating frame (73) is fixedly connected to the bottom end of the connecting frame (72); two vertical parts of the U-shaped insulating frame (73) are movably sleeved on a movable plate (74); two rectangular through holes are provided on the outer wall of the movable plate (74) and are matched with the vertical parts of the U-shaped insulating frame (73); an early warning mechanism (8) for monitoring the tilt or overweight state of the drainage bottle (10) is fixedly connected to the bottom end of the U-shaped insulating frame (73); extension rods (75) are fixedly connected to the outer walls of both ends of the U-shaped insulating frame (73); a rolling bearing (76) is fixedly sleeved on the rod wall of the extension rod (75); an insulating positioning cylinder (77) is commonly sleeved on the outer walls of the outer rings of the two rolling bearings (76); and a positioning mechanism (9) is fixedly connected to the outer wall of the bottom end of the insulating positioning cylinder (77).

5. The minimally invasive closed drainage device for pneumothorax according to claim 4, characterized in that: The early warning mechanism (8) comprises a pressure sensor (81), a lithium battery module (82) and a buzzer (83) fixedly connected to the outer wall of the bottom end of the U-shaped insulating frame (73); the top force-bearing end of the pressure sensor (81) contacts the lower surface of the movable plate (74); a mounting hole is provided at the bottom end of the U-shaped insulating frame (73); a micro PLC controller (84) is fixedly connected to the hole wall of the mounting hole; a conductive rod (85) is fixedly connected to the lower surface of the U-shaped insulating frame (73); a conductive cylinder (86) is fixedly connected to the inner wall of the insulating positioning cylinder (77); and the bottom end of the conductive rod (85) is located at the central axis position of the conductive cylinder (86).

6. The minimally invasive closed drainage device for pneumothorax according to claim 4, characterized in that: The positioning mechanism (9) comprises an annular cover (91) fixedly connected to the inner wall of the bottom end of the insulating positioning cylinder (77); the lower surface of the insulating positioning cylinder (77) is fixedly connected to a plurality of negative pressure suction cups (92); the air guide ends of the plurality of negative pressure suction cups (92) pass through the inner wall of the insulating positioning cylinder (77) and are located inside the annular cover (91); the top end of the annular cover (91) is fixedly connected to a control valve (93); the upper surface of the annular cover (91) is fixedly connected to a micro air pump (94); the air inlet end of the micro air pump (94) is fixedly connected to the top end of the control valve (93) via a connecting pipe; the outer wall of the insulating positioning cylinder (77) is fixedly connected to a connecting piece (95); the outer wall of the connecting piece (95) is provided with two rope holes (96); the outer wall of the insulating positioning cylinder (77) is fixedly connected to two connecting ropes (97) that match the rope holes (96).

7. The minimally invasive closed drainage device for pneumothorax according to claim 1, characterized in that: The top end of the sleeve core (3) is provided with a puncture tip, and the top end of the puncture hard sleeve (1) is provided with a puncture chamfer.

8. The minimally invasive closed drainage device for pneumothorax according to claim 2, characterized in that: A bonding glue layer (11) is coated on the side of the rubber ring sheet (52) away from the external threaded ring (54), and a release paper protective layer (12) is connected to the outside of the bonding glue layer (11).

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