False pulling prevention protection device for drainage tube in pediatric urinary surgery

Abstract

The invention discloses a pediatric urinary surgery drainage tube mistaken-pulling-preventing protection device, and relates to the technical field of medical instruments, the pediatric urinary surgery drainage tube mistaken-pulling-preventing protection device comprises a connecting seat, two first limiting rings which are symmetrical to each other are slidably arranged in the connecting seat, and a plurality of rollers are rotatably connected in the first limiting rings; the multiple rollers are distributed at equal intervals in a circumferential array by taking the circle center of the first limiting ring as the center, connecting shafts are connected to the rollers, and the rollers are rotationally connected into the first limiting ring through the connecting shafts; when mistaken pulling occurs, firstly, a connecting rope and a winding roller convert tensile force, a rotary damper and a speed reducer slow down the speed, a coil spring provides reverse restoring force, multi-stage buffering is formed to weaken impact, then a magnetic control structure is triggered through centrifugal force to lock a roller, a drainage tube is prevented from being disengaged, meanwhile, an alarm is triggered, the coil spring is locked, and secondary damage is avoided; the risks of wound tearing of a patient and drainage tube disengagement can be reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a protective device for preventing accidental removal of pediatric urological drainage tubes. Background Technology

[0002] A drainage tube is a medical device used in clinical surgery to drain pus, blood, and fluid accumulated between body tissues or in body cavities, preventing postoperative infection and promoting wound healing. Many types of surgical drainage tubes are used clinically; some are for urinary catheterization, others for wounds, and they are used in the thoracic cavity, brain cavity, gastrointestinal tract, and biliary tract, among others. The purpose of surgical drainage is to drain pus, blood, and fluid accumulated between body tissues or in body cavities to prevent postoperative infection and to avoid affecting wound healing. However, if a drainage tube becomes dislodged or is accidentally pulled out during use, it can cause serious harm to the patient. Therefore, proper care of drainage tubes is crucial. Consequently, existing technologies include fixation devices to secure drainage tubes and prevent dislodgement.

[0003] A Chinese patent (publication number: CN114652944A) discloses a device for fixing a drainage tube to prevent accidental removal, including a housing, a left fixing strap, and a right fixing strap. The housing contains a control board and a human body sensor. The control board is connected to the human body sensor and has a sensing intensity threshold. By setting up the human body sensor and the control board, the device can effectively detect whether accidental removal has occurred and then send a signal to the external hospital system to trigger an alarm.

[0004] During use, this fixation device can transmit an alarm to the hospital system when a patient accidentally pulls it out, thanks to the sensors installed. However, this device is more of an early warning mechanism; it does not provide any protective measures in case of accidental removal, which could still result in harm to the patient.

[0005] To address this issue, we designed a protective device to prevent accidental removal of pediatric urological drainage tubes. Summary of the Invention

[0006] The purpose of this invention is to provide a protective device to prevent accidental removal of pediatric urological drainage tubes, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides a pediatric urological drainage tube anti-accidental removal protection device, comprising a connecting seat, two mutually symmetrical first limiting rings slidably disposed within the connecting seat, a plurality of rollers rotatably connected within the first limiting rings, the plurality of rollers being distributed in a circumferential array at equal intervals with the center of the first limiting ring as the center, a connecting shaft connected to the rollers, the rollers being rotatably connected within the first limiting rings via the connecting shafts, a plurality of mounting frames connected within the first limiting rings, and every two mounting frames corresponding to one roller, symmetrically arranged on both sides of the rollers, a plurality of connecting frames connected to the connecting shafts, a first return spring connected within the connecting frames, the other end of the first return spring connected to a first magnetic block, a first electromagnet for attracting the first magnetic block connected within the mounting frames, the first electromagnet being arranged in a ring.

[0008] Furthermore, a mounting base is provided on one side of the connecting seat, and medical double-sided tape is fixedly connected to one side of the mounting base for adhering to the patient's skin. A winding roller is rotatably connected inside the mounting base, and a connecting rope is wound around the winding roller. The other end of the connecting rope is connected to the bottom of the connecting seat, so that when the drainage tube is accidentally pulled out, the winding roller will rotate due to the stretching of the connecting rope, thus buffering the pulling force of the accidental pull.

[0009] Furthermore, a rotary damper is fixedly connected inside the mounting base, and a mounting shaft is rotatably connected inside the mounting base. The winding roller is fixedly sleeved on the mounting shaft, and one end of the mounting shaft is fixedly connected to the output end of the rotary damper. The rotary damper is used to provide damping resistance when the winding roller rotates with the connecting rope, thereby slowing down the rotation speed of the winding roller.

[0010] Furthermore, a connecting plate is fixedly connected inside the mounting base, and a coil spring is provided inside the connecting plate. One end of the coil spring is fixedly connected to the inner wall of the mounting base, and the other end is fixedly connected to the outer wall of the mounting shaft.

[0011] Furthermore, the mounting base is connected to two symmetrical connecting plates. A second electromagnet is connected to one side of each connecting plate, a second return spring is connected to one side of the second electromagnet, and a second limiting ring for limiting the mounting shaft is connected to the other end of the second return spring.

[0012] Furthermore, an alarm button is fixedly connected inside the connecting seat, and the alarm button is electrically connected to an external alarm mechanism and a second electromagnet; an abutting cam is fixedly sleeved on one end of the mounting shaft, and the protruding end of the abutting cam faces the alarm button; wherein, when the drainage tube is accidentally pulled out and the mounting shaft is rotated, the abutting cam rotates synchronously with the mounting shaft, and its protruding end abuts the alarm button, triggering the external alarm device to issue an alarm.

[0013] Furthermore, a knob is rotatably connected to the top of the connecting seat, and two symmetrical guide slots are opened at the bottom of the knob. The two guide slots are symmetrically distributed with the axis of the knob as the center, and the guide slots have an arc-shaped structure. Two telescopic plates are slidably connected inside the connecting seat. The two telescopic plates are fixedly connected to the outer walls of the two first limiting rings respectively. A guide post is fixedly connected to the top of the telescopic plate. The end of the guide post away from the telescopic plate extends into the guide slot and slides in cooperation with the inner wall of the guide slot. When the knob is rotated, the guide slot drives the telescopic plate to slide along the inside of the connecting seat through the guide post, thereby adjusting the distance between the two first limiting rings to adapt to drainage pipes of different diameters.

[0014] Furthermore, a fixing plate is connected inside the mounting base, the connecting disc is connected to the fixing plate, a reducer is provided inside the mounting base, and the reducer is connected to the mounting shaft.

[0015] Furthermore, the outer peripheral wall of the roller is wrapped with a flexible anti-wear pad layer, which is made of medical-grade silicone.

[0016] Furthermore, the mounting base has multiple ventilation holes, and both ends of the mounting base have mounting slots.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. In the event of accidental removal, the tension is first converted by the connecting rope and the winding roller, the speed is slowed down by the rotation damper and the reducer, and the coil spring provides the reverse restoring force, forming a multi-stage buffer to weaken the impact. Then, the centrifugal force triggers the magnetic control structure to lock the roller, preventing the drainage tube from falling out. At the same time, the alarm is triggered and the coil spring is locked to avoid secondary injury. This setting can reduce the risk of wound tearing and drainage tube dislodgement for patients.

[0018] 2. Simply turn the knob to adjust the spacing of the first limit ring, which can accommodate drainage tubes of different diameters without replacing the device. The mounting base is fixed with medical double-sided tape and features a ventilation hole design, which ensures that the device fits the skin securely while allowing air circulation, reducing the skin stuffiness and allergies caused by sweat accumulation. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the overall external structure of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a first sectional view of the present invention; Figure 4 This is a front view of the present invention; Figure 5 This is a second sectional view of the present invention; Figure 6 This is a third sectional view of the present invention; Figure 7 For the present invention Figure 5 Enlarged view of the structure at point A in the middle; Figure 8 For the present invention Figure 2 Enlarged view of the structure at point B; Figure 9 For the present invention Figure 6 Enlarged view of the structure at point C; Figure 10 For the present invention Figure 5 Enlarged view of the structure at point D.

[0020] In the diagram: 1. Connecting seat; 2. First limiting ring; 3. Roller; 4. Connecting shaft; 5. Mounting frame; 6. Connecting frame; 7. First return spring; 8. First magnetic block; 9. First electromagnet; 10. Mounting seat; 11. Winding roller; 12. Connecting rope; 13. Rotation damper; 14. Mounting shaft; 15. Connecting disc; 16. Coil spring; 17. Knob; 18. Telescopic plate; 19. Guide post; 20. Guide slot; 21. Connecting plate; 22. Second electromagnet; 23. Second return spring; 24. Second limiting ring; 25. Guide block; 26. Alarm button; 27. Abutting cam; 28. Fixing plate; 29. ​​Vent hole; 30. Mounting slot; 31. Reducer. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 10This invention provides a technical solution: a protective device for preventing accidental removal of pediatric urological drainage tubes, comprising a connecting seat 1, two symmetrical first limiting rings 2 slidably disposed within the connecting seat 1, multiple rollers 3 rotatably connected within the first limiting rings 2, the multiple rollers 3 being evenly distributed in a circular array with the center of the first limiting rings 2 as the center, a connecting shaft 4 connected to the rollers 3, the rollers 3 being rotatably connected within the first limiting rings 2 via the connecting shaft 4, multiple mounting frames 5 connected within the first limiting rings 2, and every two mounting frames 5 corresponding to one roller 3, symmetrically arranged on both sides of the roller 3, multiple connecting frames 6 connected to the connecting shaft 4, a first return spring 7 connected within the connecting frame 6, a first magnetic block 8 connected to the other end of the first return spring 7, and a first electromagnet 9 for attracting the first magnetic block 8 connected within the mounting frame 5, the first electromagnet 9 being arranged in a ring.

[0023] In practice, during use, the drainage tube passes through the clamping space formed by the two first limiting rings 2. During normal use, slight movement of the drainage tube will cause the roller 3 to rotate slowly around the connecting shaft 4. At this time, the first magnetic block 8 is held within the connecting frame 6 under the elastic force of the first reset spring 7 and does not contact the first electromagnet 9. When the patient accidentally pulls out the drainage tube, the force of the accidental pull is generally large, causing the drainage tube to move rapidly, driving the roller 3 to rotate at high speed. The connecting shaft 4 rotates at high speed synchronously with the roller 3, generating centrifugal force. This centrifugal force causes the first magnetic block 8 to slide towards the mounting frame 5 against the elastic force of the first reset spring 7 until the first magnetic block 8 is attracted and fixed by the annular first electromagnet 9. Then, the roller 3 is locked by the connecting shaft 4. After the roller 3 stops rotating, it clamps the drainage tube, preventing the drainage tube from being pulled out further.

[0024] See Figure 1 and Figure 4 A mounting base 10 is provided on one side of the connecting base 1. Medical double-sided tape is fixedly connected to one side of the mounting base 10 for bonding to the patient's skin. A winding roller 11 is rotatably connected inside the mounting base 10. A connecting rope 12 is wound around the winding roller 11. The other end of the connecting rope 12 is connected to the bottom of the connecting base 1. When the drainage tube is accidentally pulled out, the winding roller 11 is rotated by the stretching of the connecting rope 12 to buffer the pulling force of the accidental pull.

[0025] In practice, the device is fixed to the patient's skin surface with medical double-sided tape on one side of the mounting base 10 to prevent the device from moving with the drainage tube. When the drainage tube is accidentally pulled out, the connecting base 1 moves away from the patient along with the drainage tube, pulling the connecting rope 12 to unfold from the winding roller 11. The winding roller 11 rotates accordingly. During the stretching of the connecting rope 12 and the rotation of the winding roller 11, the instantaneous tension of the accidental pull is converted into the rotational kinetic energy of the winding roller 11, thus achieving tension buffering. This setting can reduce the risk of wound tearing.

[0026] See Figure 9A rotary damper 13 is fixedly connected inside the mounting base 10, and a mounting shaft 14 is also rotatably connected inside the mounting base 10. The winding roller 11 is fixedly sleeved on the mounting shaft 14, and one end of the mounting shaft 14 is fixedly connected to the output end of the rotary damper 13. The rotary damper 13 is used to provide damping resistance when the winding roller 11 is stretched and rotated with the connecting rope 12, thereby slowing down the rotation speed of the winding roller 11.

[0027] In practice, when the accidental pulling causes the connecting rope 12 to pull the winding roller 11 to rotate, the winding roller 11 drives the mounting shaft 14 to rotate synchronously. The rotation damper 13 generates damping resistance on the rotation of the mounting shaft 14, slowing down the rotation speed of the mounting shaft 14 and the winding roller 11, thereby weakening the pull force transmitted by the accidental pulling of the connecting rope 12.

[0028] See Figure 9 A connecting plate 15 is fixedly connected inside the mounting base 10. A coil spring 16 is provided inside the connecting plate 15. One end of the coil spring 16 is connected to the mounting base 10. The present invention provides a technical solution: a pediatric urological drainage tube anti-accidental removal protection device, including a connecting base 1. Two mutually symmetrical first limiting rings 2 are slidably arranged inside the connecting base 1. Multiple rollers 3 are rotatably connected inside the first limiting rings 2. The multiple rollers 3 are distributed in a circumferential array with equal spacing around the center of the first limiting rings 2. A connecting shaft 4 is connected to the rollers 3. The rollers 3 are rotatably connected inside the first limiting rings 2 through the connecting shaft 4. Multiple mounting frames 5 are connected inside the first limiting rings 2, and every two mounting frames 5 correspond to one roller 3 and are symmetrically arranged on both sides of the roller 3. Multiple connecting frames 6 are connected to the connecting shaft 4. A first return spring 7 is connected inside the connecting frame 6. The other end of the first return spring 7 is connected to a first magnetic block 8. A first electromagnet 9 that attracts the first magnetic block 8 is connected inside the mounting frame 5. The first electromagnet 9 is arranged in a ring.

[0029] In practice, during use, the drainage tube passes through the clamping space formed by the two first limiting rings 2. During normal use, slight movement of the drainage tube will cause the roller 3 to rotate slowly around the connecting shaft 4. At this time, the first magnetic block 8 is held within the connecting frame 6 under the elastic force of the first reset spring 7 and does not contact the first electromagnet 9. When the patient accidentally pulls out the drainage tube, the force of the accidental pull is generally large, causing the drainage tube to move rapidly, driving the roller 3 to rotate at high speed. The connecting shaft 4 rotates at high speed synchronously with the roller 3, generating centrifugal force. This centrifugal force causes the first magnetic block 8 to slide towards the mounting frame 5 against the elastic force of the first reset spring 7 until the first magnetic block 8 is attracted and fixed by the annular first electromagnet 9. Then, the roller 3 is locked by the connecting shaft 4. After the roller 3 stops rotating, it clamps the drainage tube, preventing the drainage tube from being pulled out further.

[0030] See Figure 1 and Figure 4A mounting base 10 is provided on one side of the connecting base 1. Medical double-sided tape is fixedly connected to one side of the mounting base 10 for bonding to the patient's skin. A winding roller 11 is rotatably connected inside the mounting base 10. A connecting rope 12 is wound around the winding roller 11. The other end of the connecting rope 12 is connected to the bottom of the connecting base 1. When the drainage tube is accidentally pulled out, the winding roller 11 is rotated by the stretching of the connecting rope 12 to buffer the pulling force of the accidental pull.

[0031] In practice, the device is fixed to the patient's skin surface with medical double-sided tape on one side of the mounting base 10 to prevent the device from moving with the drainage tube. When the drainage tube is accidentally pulled out, the connecting base 1 moves away from the patient along with the drainage tube, pulling the connecting rope 12 to unfold from the winding roller 11. The winding roller 11 rotates accordingly. During the stretching of the connecting rope 12 and the rotation of the winding roller 11, the instantaneous tension of the accidental pull is converted into the rotational kinetic energy of the winding roller 11, thus achieving tension buffering. This setting can reduce the risk of wound tearing.

[0032] See Figure 9 A rotary damper 13 is fixedly connected inside the mounting base 10, and a mounting shaft 14 is also rotatably connected inside the mounting base 10. The winding roller 11 is fixedly sleeved on the mounting shaft 14, and one end of the mounting shaft 14 is fixedly connected to the output end of the rotary damper 13. The rotary damper 13 is used to provide damping resistance when the winding roller 11 is stretched and rotated with the connecting rope 12, thereby slowing down the rotation speed of the winding roller 11.

[0033] In practice, when the accidental pulling causes the connecting rope 12 to pull the winding roller 11 to rotate, the winding roller 11 drives the mounting shaft 14 to rotate synchronously. The rotation damper 13 generates damping resistance on the rotation of the mounting shaft 14, slowing down the rotation speed of the mounting shaft 14 and the winding roller 11, thereby weakening the pull force transmitted by the accidental pulling of the connecting rope 12.

[0034] See Figure 9 A connecting plate 15 is fixedly connected inside the mounting base 10. A coil spring 16 is provided inside the connecting plate 15. One end of the coil spring 16 is fixedly connected to the inner wall of the connecting plate 15, and the other end is fixedly connected to the outer wall of the mounting shaft 14.

[0035] In practice, when a patient accidentally pulls out the drainage tube, the drainage tube moves the connecting seat 1, which in turn pulls the connecting rope 12 to unfold from the winding roller 11. The winding roller 11 rotates synchronously with the stretching of the connecting rope 12, and drives the coaxial mounting shaft 14 to rotate. When the mounting shaft 14 rotates, it twists the coil spring 16, causing the coil spring 16 to undergo elastic deformation and store elastic force. During this process, the coil spring 16 generates a reverse restoring force due to elastic deformation. This reverse restoring force is transmitted to the winding roller 11 through the mounting shaft 14, forming resistance to the rotation of the winding roller 11, slowing down the rope release speed of the winding roller 11, and thus weakening the pull force of the connecting rope 12 transmitted to the connecting seat 1 due to accidental pull. When the pull force of accidental pull disappears, the coil spring 16 releases its elastic potential energy, causing the mounting shaft 14 to rotate in the opposite direction, which in turn causes the winding roller 11 to retract the connecting rope 12, so that the connecting seat 1 returns to its initial position.

[0036] See Figure 9 The mounting base 10 is connected to two symmetrical connecting plates 21. A second electromagnet 22 is connected to one side of the connecting plate 21, a second return spring 23 is connected to one side of the second electromagnet 22, and a second limiting ring 24 that limits the mounting shaft 14 is connected to the other end of the second return spring 23.

[0037] It should be noted that one end of the second limiting ring 24 is connected to a guide block 25, and the guide block 25 is slidably connected to the connecting plate 21.

[0038] In practice, when the procedure is performed, the second electromagnet 22 is energized, and the second electromagnet 22 generates magnetic attraction to the second limiting ring 24. The second limiting ring 24 overcomes the elastic force of the second reset spring 23 and moves towards the mounting shaft 14 until it fits against the outer wall of the mounting shaft 14, forming a clamping limit on the mounting shaft 14. At this time, even if the coil spring 16 has a tendency to rebound, the mounting shaft 14 is locked by the second limiting ring 24 and cannot rotate, thus preventing the coil spring 16 from rebounding and causing the winding roller 11 to retract the connecting rope 12, thereby preventing the drainage tube from being reinserted into the patient's body. This setting can avoid the risk of secondary injury caused by the reset of the coil spring 16.

[0039] See Figure 9 An alarm button 26 is fixedly connected inside the connecting seat 1. The alarm button 26 is electrically connected to the external alarm mechanism and the second electromagnet 22. An abutting cam 27 is fixedly sleeved on one end of the mounting shaft 14. The protruding end of the abutting cam 27 faces the alarm button 26. When the drainage tube is accidentally pulled out and the mounting shaft 14 is rotated, the abutting cam 27 rotates synchronously with the mounting shaft 14, and its protruding end abuts the alarm button 26, triggering the external alarm device to sound an alarm.

[0040] In practice, when the drainage tube is accidentally pulled out and the mounting shaft 14 rotates, the mounting shaft 14 drives the contact cam 27 to rotate synchronously. The protruding end of the contact cam 27 gradually presses the alarm button 26 as it rotates. After the alarm button 26 is triggered, it sends a signal to the external alarm mechanism and issues an audible and visual alarm to remind medical staff. At the same time, it simultaneously powers the second electromagnet 22.

[0041] See Figure 1 and Figure 8 A knob 17 is rotatably connected to the top of the connecting seat 1. Two symmetrical guide slots 20 are opened at the bottom of the knob 17. The two guide slots 20 are symmetrically distributed with the axis of the knob 17 as the center, and the guide slots 20 have an arc-shaped structure. Two telescopic plates 18 are slidably connected inside the connecting seat 1. The two telescopic plates 18 are fixedly connected to the outer walls of the two first limiting rings 2 respectively. A guide post 19 is fixedly connected to the top of the telescopic plate 18. The end of the guide post 19 away from the telescopic plate 18 extends into the guide slot 20 and slides with the inner wall of the guide slot 20. When the knob 17 is rotated, the guide slot 20 drives the telescopic plate 18 to slide along the inside of the connecting seat 1 through the guide post 19, thereby adjusting the distance between the two first limiting rings 2 to adapt to drainage pipes of different diameters.

[0042] In practice, when using drainage tubes of different diameters, medical staff turn knob 17. The arc-shaped guide groove 20 at the bottom of knob 17 rotates with knob 17. The inner wall of guide groove 20 exerts a pushing or pulling force on guide post 19, causing guide post 19 to slide along guide groove 20. Guide post 19 causes telescopic plate 18 to slide in connecting seat 1. Telescopic plate 18 then pulls or pushes first limiting ring 2 to slide along inner wall of connecting seat 1, adjusting the distance between the two first limiting rings 2 until it matches the current drainage tube diameter.

[0043] See Figure 9 The mounting base 10 is connected to a fixing plate 28, and the connecting plate 15 is connected to the fixing plate 28. The mounting base 10 is equipped with a reducer 31, which is connected to the mounting shaft 14.

[0044] In practice, the connecting plate 15 is fixed in the mounting base 10 by the fixing plate 28 to ensure that the coil spring 16 is stable in position during torsion and rebound, and to avoid the coil spring 16 breaking due to uneven force caused by the displacement of the connecting plate 15; the reducer 31 is installed on the mounting shaft 14. When accidentally pulled out, the mounting shaft 14 rotates and drives the reducer 31 to work. The reducer 31 further reduces the rotation speed of the mounting shaft 14 and slows down the rope release speed of the winding roller 11.

[0045] See Figure 1 The outer wall of roller 3 is wrapped with a flexible anti-wear pad, which is made of medical silicone material.

[0046] In practice, when the drainage tube is inserted, it comes into direct contact with the medical silicone anti-wear pad on the outer periphery of the roller 3. During normal slight movement or sliding before accidental removal and locking, the flexibility of the silicone pad can reduce frictional damage to the outer wall of the drainage tube by the roller 3.

[0047] See Figure 1 and Figure 6 The mounting base 10 has multiple ventilation holes 29, and both ends of the mounting base 10 have mounting slots 30.

[0048] In practice, when the mounting base 10 is attached to the patient's skin with medical double-sided tape, the ventilation hole 29 allows air circulation between the skin and the outside, reducing sweat accumulation and lowering the risk of skin stuffiness and allergies; the mounting slot 30 is used to install the external fixing strap.

[0049] Working principle: Medical staff attach the medical double-sided tape on one side of the mounting base 10 to the area near the drainage tube wound, and ensure skin ventilation through the ventilation hole 29; According to the actual diameter of the drainage tube, rotate the knob 17 at the top of the connecting seat 1; the arc-shaped guide groove 20 at the bottom of the knob 17 pushes the guide post 19 to slide as it rotates, and the guide post 19 drives the telescopic plate 18 to move within the connecting seat 1, thereby pulling the two symmetrical first limiting rings 2 to adjust the spacing; after the spacing is adapted to the diameter of the drainage tube, stop rotating the knob 17 and pass the drainage tube through the clamping space formed by the two first limiting rings 2. At this time, the outer wall of the drainage tube is in contact with the medical silicone anti-wear pad layer on the outer periphery of the inner roller 3 of the first limiting ring 2. When the drainage tube needs to be moved slightly during clinical use, the outer wall of the drainage tube drives the roller 3 to rotate slowly around the connecting shaft 4. At this time, the speed of the connecting shaft 4 is low, and the centrifugal force generated is insufficient to overcome the elastic force of the first reset spring 7. The first magnetic block 8 remains in the connecting frame 6 and does not contact the annular first electromagnet 9 in the mounting frame 5. When a patient unintentionally pulls out the drainage tube, the pulling force causes the drainage tube to move away from the patient, pulling the connecting seat 1 to move synchronously. The connecting seat 1 pulls the connecting rope 12 to unfold from the winding roller 11. The winding roller 11 rotates around the mounting shaft 14 as the connecting rope 12 stretches, converting the instantaneous pulling force into the rotational kinetic energy of the winding roller 11, weakening the pulling impact and reducing the risk of wound tearing. When the winding roller 11 rotates, it drives the coaxial mounting shaft 14 to rotate synchronously. The rotation damper 13 at one end of the mounting shaft 14 generates damping resistance, slowing down the rotation speed of the mounting shaft 14. At the same time, the reducer 31 on the mounting shaft 14 further reduces the rotation speed. During the rotation of the mounting shaft 14, the coil spring 16 inside the connecting disc 15 is twisted synchronously. The coil spring 16 undergoes elastic deformation and stores elastic potential energy, generating a reverse restoring force. This force is transmitted to the winding roller 11 through the mounting shaft 14, forming additional resistance to the rotation of the winding roller 11, further weakening the pulling force. When the pulling force continues to act due to accidental removal, the drainage tube moves faster, causing the roller 3 and connecting shaft 4 to rotate at high speed. The centrifugal force generated by the high-speed rotation of the connecting shaft 4 increases significantly, overcoming the elastic force of the first return spring 7, and causing the first magnetic block 8 in the connecting frame 6 to slide towards the mounting frame 5. Until the first magnetic block 8 is attracted and fixed by the annular first electromagnet 9, the first magnetic block 8 restricts the rotation of the roller 3 through the connecting shaft 4. After the roller 3 stops rotating, it clamps the drainage tube, preventing the drainage tube from being pulled out further. When the mounting shaft 14 rotates during the accidental removal process, it synchronously drives the abutting cam 27 at one end to rotate. As the abutting cam 27 rotates, the protruding end gradually presses the alarm button 26 in the connecting seat 1. After the alarm button 26 is triggered, it sends a signal to the external alarm mechanism to remind medical staff to intervene in time. At the same time, it simultaneously powers the second electromagnet 22 in the mounting seat 10. When the second electromagnet 22 is energized, it generates magnetism and attracts the second limiting ring 24 to move towards the mounting shaft 14 against the elastic force of the second reset spring 23 until the second limiting ring 24 fits against the outer wall of the mounting shaft 14 and forms a clamping limit. At this time, even if the pull force of the accidental pull disappears, although the coil spring 16 has the tendency to release elastic potential energy and drive the mounting shaft 14 to rotate in the opposite direction to retract the connecting rope 12, the mounting shaft 14 is locked by the second limiting ring 24 and cannot rotate. This prevents the coil spring 16 from rebounding and driving the winding roller 11 to retract the connecting rope 12, thereby preventing the accidentally pulled drainage tube from being reinserted into the patient's body and eliminating secondary injury. After receiving the alarm and handling the accidental disconnection, the medical staff disconnected the power supply to the second electromagnet 22, and the magnetism of the second electromagnet 22 disappeared; the second limiting ring 24 was reset under the elastic force of the second reset spring 23, releasing the limitation on the mounting shaft 14; at this time, the coil spring 16 released its elastic potential energy, causing the mounting shaft 14 and the connecting roller 11 to rotate in the opposite direction, retracting the connecting rope 12, so that the connecting seat 1 was reset to the initial position and fixedly connected to the inner wall of the connecting plate 15, and the other end was fixedly connected to the outer wall of the mounting shaft 14.

[0050] In practice, when a patient accidentally pulls out the drainage tube, the drainage tube moves the connecting seat 1, which in turn pulls the connecting rope 12 to unfold from the winding roller 11. The winding roller 11 rotates synchronously with the stretching of the connecting rope 12, and drives the coaxial mounting shaft 14 to rotate. When the mounting shaft 14 rotates, it twists the coil spring 16, causing the coil spring 16 to undergo elastic deformation and store elastic force. During this process, the coil spring 16 generates a reverse restoring force due to elastic deformation. This reverse restoring force is transmitted to the winding roller 11 through the mounting shaft 14, forming resistance to the rotation of the winding roller 11, slowing down the rope release speed of the winding roller 11, and thus weakening the pull force of the connecting rope 12 transmitted to the connecting seat 1 due to accidental pull. When the pull force of accidental pull disappears, the coil spring 16 releases its elastic potential energy, causing the mounting shaft 14 to rotate in the opposite direction, which in turn causes the winding roller 11 to retract the connecting rope 12, so that the connecting seat 1 returns to its initial position.

[0051] See Figure 9The mounting base 10 is connected to two symmetrical connecting plates 21. A second electromagnet 22 is connected to one side of the connecting plate 21, a second return spring 23 is connected to one side of the second electromagnet 22, and a second limiting ring 24 that limits the mounting shaft 14 is connected to the other end of the second return spring 23.

[0052] In practice, when the procedure is performed, the second electromagnet 22 is energized, and the second electromagnet 22 generates magnetic attraction to the second limiting ring 24. The second limiting ring 24 overcomes the elastic force of the second reset spring 23 and moves towards the mounting shaft 14 until it fits against the outer wall of the mounting shaft 14, forming a clamping limit on the mounting shaft 14. At this time, even if the coil spring 16 has a tendency to rebound, the mounting shaft 14 is locked by the second limiting ring 24 and cannot rotate, thus preventing the coil spring 16 from rebounding and causing the winding roller 11 to retract the connecting rope 12, thereby preventing the drainage tube from being reinserted into the patient's body. This setting can avoid the risk of secondary injury caused by the reset of the coil spring 16.

[0053] See Figure 9 An alarm button 26 is fixedly connected inside the connecting seat 1. The alarm button 26 is electrically connected to the external alarm mechanism and the second electromagnet 22. An abutting cam 27 is fixedly sleeved on one end of the mounting shaft 14. The protruding end of the abutting cam 27 faces the alarm button 26. When the drainage tube is accidentally pulled out and the mounting shaft 14 is rotated, the abutting cam 27 rotates synchronously with the mounting shaft 14, and its protruding end abuts the alarm button 26, triggering the external alarm device to sound an alarm.

[0054] In practice, when the drainage tube is accidentally pulled out and the mounting shaft 14 rotates, the mounting shaft 14 drives the contact cam 27 to rotate synchronously. The protruding end of the contact cam 27 gradually presses the alarm button 26 as it rotates. After the alarm button 26 is triggered, it sends a signal to the external alarm mechanism and issues an audible and visual alarm to remind medical staff. At the same time, it simultaneously powers the second electromagnet 22.

[0055] See Figure 1 and Figure 8 A knob 17 is rotatably connected to the top of the connecting seat 1. Two symmetrical guide slots 20 are opened at the bottom of the knob 17. The two guide slots 20 are symmetrically distributed with the axis of the knob 17 as the center, and the guide slots 20 have an arc-shaped structure. Two telescopic plates 18 are slidably connected inside the connecting seat 1. The two telescopic plates 18 are fixedly connected to the outer walls of the two first limiting rings 2 respectively. A guide post 19 is fixedly connected to the top of the telescopic plate 18. The end of the guide post 19 away from the telescopic plate 18 extends into the guide slot 20 and slides with the inner wall of the guide slot 20. When the knob 17 is rotated, the guide slot 20 drives the telescopic plate 18 to slide along the inside of the connecting seat 1 through the guide post 19, thereby adjusting the distance between the two first limiting rings 2 to adapt to drainage pipes of different diameters.

[0056] In practice, when using drainage tubes of different diameters, medical staff turn knob 17. The arc-shaped guide groove 20 at the bottom of knob 17 rotates with knob 17. The inner wall of guide groove 20 exerts a pushing or pulling force on guide post 19, causing guide post 19 to slide along guide groove 20. Guide post 19 causes telescopic plate 18 to slide in connecting seat 1. Telescopic plate 18 then pulls or pushes first limiting ring 2 to slide along inner wall of connecting seat 1, adjusting the distance between the two first limiting rings 2 until it matches the current drainage tube diameter.

[0057] See Figure 9 The mounting base 10 is connected to a fixing plate 28, and the connecting plate 15 is connected to the fixing plate 28. The mounting base 10 is equipped with a reducer 31, which is connected to the mounting shaft 14.

[0058] In practice, the connecting plate 15 is fixed in the mounting base 10 by the fixing plate 28 to ensure that the coil spring 16 is stable in position during torsion and rebound, and to avoid the coil spring 16 breaking due to uneven force caused by the displacement of the connecting plate 15; the reducer 31 is installed on the mounting shaft 14. When accidentally pulled out, the mounting shaft 14 rotates and drives the reducer 31 to work. The reducer 31 further reduces the rotation speed of the mounting shaft 14 and slows down the rope release speed of the winding roller 11.

[0059] See Figure 1 The outer wall of roller 3 is wrapped with a flexible anti-wear pad, which is made of medical silicone material.

[0060] In practice, when the drainage tube is inserted, it comes into direct contact with the medical silicone anti-wear pad on the outer periphery of the roller 3. During normal slight movement or sliding before accidental removal and locking, the flexibility of the silicone pad can reduce frictional damage to the outer wall of the drainage tube by the roller 3.

[0061] See Figure 1 and Figure 6 The mounting base 10 has multiple ventilation holes 29, and both ends of the mounting base 10 have mounting slots 30.

[0062] In practice, when the mounting base 10 is attached to the patient's skin with medical double-sided tape, the ventilation hole 29 allows air circulation between the skin and the outside, reducing sweat accumulation and lowering the risk of skin stuffiness and allergies; the mounting slot 30 is used to install the external fixing strap.

[0063] Working principle: Medical staff attach the medical double-sided tape on one side of the mounting base 10 to the area near the drainage tube wound, and ensure skin ventilation through the ventilation hole 29; According to the actual diameter of the drainage tube, rotate the knob 17 at the top of the connecting seat 1; the arc-shaped guide groove 20 at the bottom of the knob 17 pushes the guide post 19 to slide as it rotates, and the guide post 19 drives the telescopic plate 18 to move within the connecting seat 1, thereby pulling the two symmetrical first limiting rings 2 to adjust the spacing; after the spacing is adapted to the diameter of the drainage tube, stop rotating the knob 17 and pass the drainage tube through the clamping space formed by the two first limiting rings 2. At this time, the outer wall of the drainage tube is in contact with the medical silicone anti-wear pad layer on the outer periphery of the inner roller 3 of the first limiting ring 2. When the drainage tube needs to be moved slightly during clinical use, the outer wall of the drainage tube drives the roller 3 to rotate slowly around the connecting shaft 4. At this time, the speed of the connecting shaft 4 is low, and the centrifugal force generated is insufficient to overcome the elastic force of the first reset spring 7. The first magnetic block 8 remains in the connecting frame 6 and does not contact the annular first electromagnet 9 in the mounting frame 5. When a patient unintentionally pulls out the drainage tube, the pulling force causes the drainage tube to move away from the patient, pulling the connecting seat 1 to move synchronously. The connecting seat 1 pulls the connecting rope 12 to unfold from the winding roller 11. The winding roller 11 rotates around the mounting shaft 14 as the connecting rope 12 stretches, converting the instantaneous pulling force into the rotational kinetic energy of the winding roller 11, weakening the pulling impact and reducing the risk of wound tearing. When the winding roller 11 rotates, it drives the coaxial mounting shaft 14 to rotate synchronously. The rotation damper 13 at one end of the mounting shaft 14 generates damping resistance, slowing down the rotation speed of the mounting shaft 14. At the same time, the reducer 31 on the mounting shaft 14 further reduces the rotation speed. During the rotation of the mounting shaft 14, the coil spring 16 inside the connecting disc 15 is twisted synchronously. The coil spring 16 undergoes elastic deformation and stores elastic potential energy, generating a reverse restoring force. This force is transmitted to the winding roller 11 through the mounting shaft 14, forming additional resistance to the rotation of the winding roller 11, further weakening the pulling force. When the pulling force continues to act due to accidental removal, the drainage tube moves faster, causing the roller 3 and connecting shaft 4 to rotate at high speed. The centrifugal force generated by the high-speed rotation of the connecting shaft 4 increases significantly, overcoming the elastic force of the first return spring 7, and causing the first magnetic block 8 in the connecting frame 6 to slide towards the mounting frame 5. Until the first magnetic block 8 is attracted and fixed by the annular first electromagnet 9, the first magnetic block 8 restricts the rotation of the roller 3 through the connecting shaft 4. After the roller 3 stops rotating, it clamps the drainage tube, preventing the drainage tube from being pulled out further. When the mounting shaft 14 rotates during the accidental removal process, it synchronously drives the abutting cam 27 at one end to rotate. As the abutting cam 27 rotates, the protruding end gradually presses the alarm button 26 in the connecting seat 1. After the alarm button 26 is triggered, it sends a signal to the external alarm mechanism to remind medical staff to intervene in time. At the same time, it simultaneously powers the second electromagnet 22 in the mounting seat 10. When the second electromagnet 22 is energized, it generates magnetism and attracts the second limiting ring 24 to move towards the mounting shaft 14 against the elastic force of the second reset spring 23 until the second limiting ring 24 fits against the outer wall of the mounting shaft 14 and forms a clamping limit. At this time, even if the pull force of the accidental pull disappears, although the coil spring 16 has the tendency to release elastic potential energy and drive the mounting shaft 14 to rotate in the opposite direction to retract the connecting rope 12, the mounting shaft 14 is locked by the second limiting ring 24 and cannot rotate. This prevents the coil spring 16 from rebounding and driving the winding roller 11 to retract the connecting rope 12, thereby preventing the accidentally pulled drainage tube from being reinserted into the patient's body and eliminating secondary injury. After receiving the alarm and handling the accidental disconnection, the medical staff disconnected the power supply to the second electromagnet 22, and the magnetism of the second electromagnet 22 disappeared; the second limit ring 24 reset under the elastic force of the second reset spring 23, releasing the limit on the mounting shaft 14; at this time, the coil spring 16 released its elastic potential energy, driving the mounting shaft 14 and the connecting roller 11 to rotate in the opposite direction, retracting the connecting rope 12, and resetting the connecting seat 1 to the initial position.

Claims

1. A protective device for preventing accidental removal of pediatric urological drainage tubes, comprising a connecting base (1), characterized in that, Two symmetrical first limiting rings (2) are slidably arranged inside the connecting seat (1). Multiple rollers (3) are rotatably connected inside the first limiting rings (2). The multiple rollers (3) are distributed in a circular array with equal spacing around the center of the first limiting rings (2). A connecting shaft (4) is connected to the rollers (3). The rollers (3) are rotatably connected inside the first limiting rings (2) through the connecting shaft (4). Multiple mounting frames (5) are connected inside the first limiting rings (2). Each pair of mounting frames (5) corresponds to one roller (3) and is symmetrically arranged on both sides of the roller (3). Multiple connecting frames (6) are connected to the connecting shaft (4). A first return spring (7) is connected inside the connecting frame (6). A first magnetic block (8) is connected to the other end of the first return spring (7). A first electromagnet (9) that attracts the first magnetic block (8) is connected inside the mounting frame (5). The first electromagnet (9) is arranged in a ring.

2. The pediatric urological drainage tube anti-accidental removal protection device as described in claim 1, characterized in that: A mounting base (10) is provided on one side of the connecting seat (1). Medical double-sided tape is fixedly connected to one side of the mounting base (10) for bonding to the patient's skin. A winding roller (11) is rotatably connected inside the mounting base (10). A connecting rope (12) is wound around the winding roller (11). The other end of the connecting rope (12) is connected to the bottom of the connecting seat (1) for driving the winding roller (11) to rotate through the stretching of the connecting rope (12) when the drainage tube is accidentally pulled out, thus buffering the pulling force of the accidental pull.

3. The pediatric urological drainage tube anti-accidental removal protection device as described in claim 2, characterized in that: A rotary damper (13) is fixedly connected inside the mounting base (10), and a mounting shaft (14) is also rotatably connected inside the mounting base (10). The winding roller (11) is fixedly sleeved on the mounting shaft (14), and one end of the mounting shaft (14) is fixedly connected to the output end of the rotary damper (13). The rotary damper (13) is used to provide damping resistance when the winding roller (11) is stretched and rotated with the connecting rope (12), thereby slowing down the rotation speed of the winding roller (11).

4. The pediatric urological drainage tube anti-accidental removal protection device as described in claim 2, characterized in that: A connecting plate (15) is fixedly connected inside the mounting base (10). A coil spring (16) is provided inside the connecting plate (15). One end of the coil spring (16) is fixedly connected to the inner wall of (15), and the other end is fixedly connected to the outer wall of the mounting shaft (14).

5. The pediatric urological drainage tube anti-accidental removal protection device as described in claim 2, characterized in that: The mounting base (10) is connected to two symmetrical connecting plates (21). A second electromagnet (22) is connected to one side of the connecting plate (21). A second reset spring (23) is connected to one side of the second electromagnet (22). A second limiting ring (24) that limits the mounting shaft (14) is connected to the other end of the second reset spring (23).

6. The pediatric urological drainage tube anti-accidental removal protection device as described in claim 3, characterized in that: An alarm button (26) is fixedly connected inside the connecting seat (1). The alarm button (26) is electrically connected to the external alarm mechanism and the second electromagnet (22). One end of the mounting shaft (14) is fixedly fitted with an abutting cam (27). The protruding end of the abutting cam (27) faces the alarm button (26). When the drainage tube is accidentally pulled out and the mounting shaft (14) rotates, the abutting cam (27) rotates synchronously with the mounting shaft (14), and its protruding end abuts the alarm button (26), triggering the external alarm device to issue an alarm.

7. The pediatric urological drainage tube anti-accidental removal protection device as described in claim 1, characterized in that: The top of the connecting seat (1) is rotatably connected to a knob (17). The bottom of the knob (17) has two symmetrical guide slots (20). The two guide slots (20) are symmetrically distributed with the axis of the knob (17) as the center, and the guide slots (20) have an arc-shaped structure. The connecting seat (1) is slidably connected to two telescopic plates (18). The two telescopic plates (18) are fixedly connected to the outer walls of the two first limiting rings (2). The top of the telescopic plates (18) is fixedly connected to a guide post (19). The end of the guide post (19) away from the telescopic plate (18) extends into the guide slot (20) and slides with the inner wall of the guide slot (20). When the knob (17) is rotated, the guide slot (20) drives the telescopic plate (18) to slide along the inside of the connecting seat (1) through the guide post (19), thereby adjusting the distance between the two first limiting rings (2) to adapt to drainage pipes of different diameters.

8. The pediatric urological drainage tube anti-accidental removal protection device as described in claim 4, characterized in that: The mounting base (10) is connected to a fixing plate (28), the connecting plate (15) is connected to the fixing plate (28), the mounting base (10) is provided with a reducer (31), and the reducer (31) is connected to the mounting shaft (14).

9. A pediatric urological drainage tube anti-accidental removal protection device as described in claim 1, characterized in that: The outer peripheral wall of the roller (3) is covered with a flexible anti-wear pad layer, which is made of medical silicone material.

10. A pediatric urological drainage tube anti-accidental removal protection device as described in claim 2, characterized in that: The mounting base (10) has multiple ventilation holes (29), and both ends of the mounting base (10) have mounting slots (30).

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