A kinking-preventing drainage device for nursing
By introducing an anti-bending mechanism into the drainage device, and utilizing the design of a lightweight connecting plate and a spring, the problem of easy bending of the drainage tube is solved, ensuring smooth drainage, reducing the risk of infection, and achieving stability and safety of the drainage effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHENGDU MILITARY GENERAL HOSPITAL OF PLA
- Filing Date
- 2025-07-12
- Publication Date
- 2026-06-16
AI Technical Summary
Existing drainage tubes are prone to kinking due to friction with skin tissue, leading to blockages. They are also prone to twisting and kinking when the patient moves, affecting drainage effectiveness and increasing the risk of infection.
A drainage device was designed, comprising a drainage bottle, a hose, a steering head, and an anti-bend mechanism. By attaching the anti-bend mechanism to the hose, and using multiple lightweight connecting plates, guide rods, and springs to pre-bend it into an S-shape, a deformation redundancy space is provided to avoid sharp bends at local angles. When subjected to force, the deformation is released, and the device returns to a stress-free state, ensuring smooth drainage.
It effectively prevents the drainage tube from twisting or kinking when the patient moves, keeps the drainage unobstructed, reduces the risk of blockage, lowers the probability of infection, and improves the drainage effect.
Smart Images

Figure CN120960526B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, and in particular to a drainage device for nursing care that prevents folding. Background Technology
[0002] Traditionally, surgical drainage tubes made of ordinary silicone or rubber have been commonly used. While these tubes can indeed drain blood and secretions from the wound cavity, they cannot completely remove small amounts of blood exudate. Because ordinary drainage tubes have large lumens and thin walls, they are easily flattened. During insertion, they experience significant friction with the skin tissue, which can cause them to kink and become blocked, thus affecting the drainage effect.
[0003] Furthermore, during the use of drainage tubes, due to the excessive length of the tube, patients are prone to squeezing and pulling the tube when moving or turning over after surgery. Under the pressure of the patient, the drainage tube may twist or kink at the point where it connects to the patient, especially at the end where it connects to the patient. This can prevent the drainage tube from remaining unobstructed and ultimately lead to wound infections and other complications for the patient.
[0004] Therefore, we have made improvements to this by proposing a nursing drainage device that prevents folding. Summary of the Invention
[0005] The purpose of this invention is to provide a drainage device for nursing care that prevents folding, so as to solve the problems mentioned in the background art.
[0006] To achieve the above-mentioned objective, the present invention provides a nursing anti-bending drainage device, comprising a drainage bottle and a tubing. One end of the tubing is fixedly connected to a second connecting tube, and the other end of the tubing is fixedly connected to a first connecting tube. A swivel head is movably connected to both the first and second connecting tubes, and a guide tube is rotatably connected to the upper end of the swivel head connected to the first connecting tube. One end of the guide tube is inserted into the patient's implantation site through a puncture. A threaded cap is rotatably connected to the upper end of the swivel head connected to the second connecting tube. The threaded cap is threadedly connected to the upper end of the drainage bottle. An anti-bending mechanism is fitted over the tubing body, and the two ends of the anti-bending mechanism are respectively installed on the first and second connecting tubes.
[0007] As a further embodiment of the present invention, the drainage bottle includes a bottle body, an opening connected to the upper end of the bottle body, an overflow pipe installed inside the bottle body, a drain outlet opened at the bottom of the bottle body, and a drain valve cover rotatably installed at the bottom of the bottle body, the drain valve cover being installed at the bottom of the overflow pipe and the drain outlet.
[0008] As a further embodiment of the present invention, the anti-bending mechanism includes a first connecting rod and a second connecting rod, with a plurality of connecting frames hinged between the first connecting rod and the second connecting rod. A fixing clip is fixedly installed at the upper end of the connecting frame, and the fixing clip is clamped to the surface of the hose body. A second spring is connected between two adjacent fixing clips, and an extension plate is connected between two adjacent connecting frames.
[0009] As a further embodiment of the present invention, the connecting frame includes a waist-shaped plate, the waist-shaped plate being generally H-shaped, and connecting holes being provided at both ends of the waist-shaped plate.
[0010] As a further embodiment of the present invention, the extension plate includes a connecting frame, with two connecting shafts sleeved in the middle of the connecting frame. The two connecting shafts are rotatably connected to two adjacent connecting frames, and a first spring is also connected between the connecting shafts and the connecting frame.
[0011] As a further embodiment of the present invention, the guide tube includes adhesive tape, a rotating sleeve is fixedly installed in the middle of the adhesive tape, the rotating sleeve is rotatably connected to the steering head, and an internal tube is fixedly connected to the upper end of the rotating sleeve.
[0012] As a further embodiment of the present invention, the steering head includes a connecting shell, a sleeve is fixedly installed at the upper end of the connecting shell, a U-shaped swing groove is opened in the middle of the connecting shell, and an installation sleeve is fixedly connected inside the connecting shell.
[0013] As a further embodiment of the present invention, the first connecting pipe includes a first connector and a first tee with openings at both ends. The first tee is T-shaped and connected to the top of the first connector, and the two ends of the first tee are rotatably sleeved on the mounting sleeve. A first protective sleeve is fixedly connected to the outside of the first connector, and a first hinge bracket is fixedly connected to the bottom of the first protective sleeve.
[0014] As a further embodiment of the present invention, the second connecting pipe includes a second connector and a second tee with openings at both ends. The second tee is T-shaped and connected to the top of the second connector, and the two ends of the second tee are rotatably sleeved on the mounting sleeve. A second protective sleeve is fixedly connected to the outside of the second connector, and a second hinge bracket is fixedly connected to the bottom of the second protective sleeve.
[0015] As a further embodiment of the present invention, the flexible tube is S-shaped and coiled on the anti-bend mechanism.
[0016] The present invention provides a nursing drainage device that prevents folding, which has the following advantages:
[0017] 1. By installing a first connecting tube, a swivel head, and a drainage tube at the upper end of the tubing, the internal tube is inserted into the patient's wound. The swivel head is connected to the rotating sleeve. Through the connection between the swivel head and the first connecting tube, the tubing and drainage tube are freely connected by rotating along the rotating sleeve and swinging along the first tee. This avoids friction and infection between the tube and the implantation site caused by the patient's movement after insertion, which would cause inconvenience to the patient. It also prevents the drainage tube from twisting, kinking, or becoming blocked at the connection between the patient and the drainage bag when the patient moves back and forth after surgery, under the pressure of the patient. This ensures the drainage effect of the drainage device.
[0018] 2. The tubing is connected to the drainage bottle via a threaded cap, a swivel head, and a second connecting tube at one end. This allows for a flexible connection between the tubing and the drainage bottle, preventing twisting or knotting at the connection point when the patient moves with the tubing. This ensures that the fluid inside the tubing can flow smoothly into the drainage bottle.
[0019] 3. The biggest difference between the drainage tube in this application and other drainage devices is the anti-bending mechanism. The anti-bending mechanism mainly uses multiple lightweight connecting plates, guide rods, and springs. By using the anti-bending mechanism to pre-bend the drainage tube into an S-shape, it gives the drainage tube "deformation redundancy space". When external force is applied later, the pre-bent shape is released first to avoid sharp angle folding. When the tube is pulled, the anti-bending mechanism deforms with the tube and has memory. It can restore the anti-bending mechanism and the tube to a stress-free state, and store the tube. This avoids the problem of stacking and folding when the tube is too long, and ensures that the tube is unobstructed during use. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 A schematic diagram of the structure of a nursing anti-folding drainage device provided in this application;
[0022] Figure 2 A schematic diagram of the drainage bottle structure of a nursing anti-breakage drainage device provided in this application;
[0023] Figure 3 A schematic diagram of the hose connection for a nursing anti-kink drainage device provided in this application;
[0024] Figure 4A schematic diagram of the anti-folding mechanism of a drainage device for nursing use provided in this application;
[0025] Figure 5 An enlarged schematic diagram of the anti-folding mechanism of a drainage device for nursing care provided in this application;
[0026] Figure 6 A schematic diagram of the first connecting tube structure of a nursing anti-folding drainage device provided in this application;
[0027] Figure 7 A schematic diagram of the second connecting tube structure of a nursing anti-folding drainage device provided in this application;
[0028] Figure 8 A schematic diagram of the steering head structure of a nursing anti-folding drainage device provided in this application;
[0029] Figure 9 A cross-sectional view of the rotating head structure of a nursing anti-folding drainage device provided in this application.
[0030] In the diagram: 1. Drainage bottle; 11. Bottle body; 12. Pipe opening; 13. Overflow pipe; 14. Drain valve cover; 15. Drain outlet; 2. Threaded cap; 3. Flexible hose; 4. Anti-bending mechanism; 41. First connecting rod; 42. Second connecting rod; 43. Connecting frame; 431. Waist-shaped plate; 432. Connecting hole; 44. Extension plate; 441. Connecting frame; 442. Connecting shaft; 443. First spring; 45. Fixing clip; 46. Second spring 5. Spring; 6. Guide tube; 7. Adhesive tape; 8. Rotating sleeve; 9. Internal tube; 10. Steering head; 11. Connecting shell; 12. Sleeve; 13. Mounting sleeve; 14. Swing groove; 15. First connecting tube; 16. First tee; 17. First protective sleeve; 18. First hinge frame; 19. First connector; 20. Second connecting tube; 11. Second tee; 12. Second protective sleeve; 13. Second hinge frame; 14. Second connector. Detailed Implementation
[0031] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.
[0032] like Figures 1-9As shown, this embodiment proposes a nursing anti-bending drainage device, including a drainage bottle 1 and a tubing 3. One end of the tubing 3 is fixedly connected to a second connecting tube 8, and the other end of the tubing 3 is fixedly connected to a first connecting tube 7. A steering head 6 is movably connected to both the first connecting tube 7 and the second connecting tube 8. A guide tube 5 is rotatably connected to the upper end of the steering head 6 connected to the first connecting tube 7. One end of the guide tube 5 is punctured and inserted into the patient's implantation site. A threaded cap 2 is rotatably connected to the upper end of the steering head 6 connected to the second connecting tube 8. The threaded cap 2 is threadedly connected to the upper end of the drainage bottle 1. An anti-bending mechanism 4 is sleeved on the body of the tubing 3. The two ends of the anti-bending mechanism 4 are respectively installed on the first connecting tube 7 and the second connecting tube 8.
[0033] The drainage bottle 1 includes a bottle body 11, with a tube opening 12 connected to the upper end of the bottle body 11. An overflow tube 13 is installed inside the bottle body 11, and a drain outlet 15 is opened at the bottom of the bottle body 11. A drain valve cover 14 is rotatably installed at the bottom of the bottle body 11. The drain valve cover 14 is installed at the bottom of the overflow tube 13 and the drain outlet 15. By setting an overflow tube 13 inside the bottle body 11, the liquid exceeding the top of the overflow tube 13 is directly discharged through the overflow tube 13, avoiding the problem of stopping drainage when the internal liquid storage space of the drainage bottle 1 is insufficient, and ensuring the smooth progress of drainage.
[0034] The anti-bending mechanism 4 includes a first connecting rod 41 and a second connecting rod 42. Multiple connecting frames 43 are hinged between the first connecting rod 41 and the second connecting rod 42. A fixing clip 45 is fixedly installed at the center of the upper end of each connecting frame 43, clamping the surface of the hose 3. A second spring 46 connects between two adjacent fixing clips 45. An extension plate 44 connects between two adjacent connecting frames 43. The first connecting rod 41 and the second connecting rod 42 are respectively connected to the first connecting pipe 7 and the second connecting pipe 8, allowing the anti-bending mechanism 4 to deform as the first connecting pipe 7 and the second connecting pipe 8 are dragged. The first connecting pipe 7 and the second connecting pipe 8 fix both ends of the hose 3 to the steering head 6. When the ends of the drainage device are pulled, the extension and deformation of the hose 3 and the anti-bending mechanism 4 resists damage to the hose 3 caused by tension, preventing direct damage when the ends of the drainage device are pulled. Pulling on the tubing 3 causes it to bend under stress, ensuring smooth drainage. The anti-bending mechanism 4 is chain-like, and the connection between the connecting frame 43 and the extension plate 44 can rotate around the connecting shaft 442 in addition to being stretched along the extension plate 44. This allows the anti-bending mechanism 4 to bend freely, making the device more convenient and comfortable to use. The multi-segment fixing clamps 45 and the second spring 46 segments cover key nodes of the tubing 3 (such as physiological bends), forming local rigid support points to resist radial compression. The connecting frame 43 is connected in series with the nodes of the second spring 46. When stretched by external force, the second spring 46 expands and contracts synchronously, causing the entire tubing 3 to deform evenly (similar to the "accordion" effect), avoiding stress concentration at a single point. The second spring 46 bears the axial tension (such as accidental pulling when the patient moves), reducing the stress on the tubing 3 itself and lowering the risk of lumen collapse caused by tensile deformation.
[0035] The connecting frame 43 includes a waist-shaped plate 431, which is I-shaped in general. Both ends of the waist-shaped plate 431 are provided with connecting holes 432. The two ends of the waist-shaped plate 431 are connected to the extension plate 44. Adjacent connecting frames 43 are connected by extension plate 44 to achieve the purpose of adjusting the length of hose 3, avoiding the problems of knotting, folding and squeezing caused by excessively long hose 3, and ensuring the smooth use of hose 3.
[0036] The extension plate 44 includes a connecting frame 441, with two connecting shafts 442 sleeved in the middle of the connecting frame 441. The two connecting shafts 442 are rotatably connected to two adjacent connecting frames 43 respectively. A first spring 443 is also connected between the connecting shafts 442 and the connecting frame 441. The extension plate 44 is used to connect two adjacent connecting frames 43 and to extend and bend the connecting frames 43 along the extension plate 44, thereby improving the portability of the anti-bending mechanism 4.
[0037] The drainage tube 5 includes an adhesive tape 51, with a rotating sleeve 52 fixedly installed in the middle of the adhesive tape 51. The rotating sleeve 52 is rotatably connected to the steering head 6. An internal tube 53 is fixedly connected to the upper end of the rotating sleeve 52. The side of the adhesive tape 51 that contacts the patient's skin is connected with medical adhesive. After the internal tube 53 is placed in the patient's wound, it is fixed by the adhesive tape 51. The rotating sleeve 52 is rotatably connected to the steering head 6 in a sealed manner to prevent the steering head 6 from pulling or dragging the drainage tube 5 when the patient moves, which could cause abrasion to the patient's wound or pull out the internal tube 53. At the same time, it can also prevent the flexible tube 3 connected to the steering head 6 from being bent or blocked.
[0038] The steering head 6 includes a connecting shell 61, a sleeve 62 is fixedly installed at the upper end of the connecting shell 61, a U-shaped swing groove 64 is opened in the middle of the connecting shell 61, and an installation sleeve 63 is fixedly connected inside the connecting shell 61. After the installation sleeve 63 is sleeved with the first connecting pipe 7 or the second connecting pipe 8, the first connecting pipe 7 or the second connecting pipe 8 swings along the swing groove 64, while always being sealed and connected with the installation sleeve 63 to ensure the delivery of liquid.
[0039] The first connecting pipe 7 includes a first connector 74 and a first tee 71 open at both ends. The first tee 71 is T-shaped and connected to the top of the first connector 74, and both ends of the first tee 71 are rotatably sleeved on the mounting sleeve 63. A first protective sleeve 72 is fixedly connected to the outside of the first connector 74, and a first hinge bracket 73 is fixedly connected to the bottom end of the first protective sleeve 72. The second connecting pipe 8 includes a second connector 84 and a second tee 81 open at both ends. The second tee 81 is T-shaped and connected to the top of the second connector 84, and both ends of the second tee 81 are rotatably sleeved on the mounting sleeve 63. On the upper part of the second connector 84, the second protective sleeve 82 is fixedly connected to the outside. The second protective sleeve 82 is fixedly connected to the bottom end of the second hinge frame 83. The hose 3 is S-shaped and coiled on the anti-bending mechanism 4. The first connecting pipe 7 and the second connecting pipe 8 are respectively connected to the two ends of the hose 3. The two ends of the hose 3 are respectively connected to the drainage bottle 1 and the patient's wound to ensure the patient's drainage procedure. At the same time, the middle part of the hose 3 is constrained by the anti-bending mechanism 4 to avoid the problems of knotting, bending and squeezing caused by the hose 3 being too long and hanging down, and to ensure the smooth use of the hose 3.
[0040] Specifically, when using this anti-kink drainage device: a first connecting tube 7, a swivel head 6, and a guide tube 5 are installed at the upper end of the tubing 3. The device is inserted into the patient's wound through the internal tube 53. The swivel head 6 is sealed and rotatably connected to the rotating sleeve 52. The connection between the swivel head 6 and the first connecting tube 7 allows for free connection between the tubing 3 and the guide tube 5, rotating along the rotating sleeve 52 and swinging along the first tee 71. This prevents friction and infection between the tube and the implantation site caused by patient movement after insertion, avoiding inconvenience to the patient. It also prevents the drainage tube from twisting, kinking, or becoming blocked at the connection point between the patient and the drainage bag under pressure from postoperative movement, ensuring the drainage effect of the device. At one end of the drainage bottle 1, a threaded cap 2, a swivel head 6, and a second connecting tube are connected. 8. Connect one end of the tubing 3 to the drainage bottle 1 via the drainage tube 5, the steering head 6, and the first connecting tube 7 at the patient's wound end. Anti-bending measures are applied to both ends of the tubing 3 to prevent twisting and knotting at the connection point between the tubing 3 and the drainage bottle 1 when the patient moves with the tubing 3. This ensures that the fluid inside the tubing 3 can flow smoothly into the drainage bottle 1. An anti-bending mechanism 4 is used to retract the tubing 3 in an S-shape. When the tubing 3 is stretched, the anti-bending mechanism 4 deforms along with the tubing 3 and has memory properties, allowing it and the tubing 3 to return to a stress-free state for storage. This prevents the tubing 3 from stacking and kinking when it is too long, ensuring unobstructed flow during use. Any content not described in detail in this specification is prior art known to those skilled in the art.
[0041] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.
Claims
1. A nursing drainage device with anti-knotting function, comprising a drainage bottle (1) and a tubing (3), characterized in that: One end of the tubing (3) is fixedly connected to a second connecting tube (8), and the other end of the tubing (3) is fixedly connected to a first connecting tube (7). A steering head (6) is movably connected to both the first connecting tube (7) and the second connecting tube (8). A guide tube (5) is rotatably connected to the upper end of the steering head (6) connected to the first connecting tube (7). One end of the guide tube (5) is inserted into the patient's implantation site. A threaded cap (2) is rotatably connected to the upper end of the steering head (6) connected to the second connecting tube (8). The threaded cap (2) is threadedly connected to the upper end of the drainage bottle (1). An anti-bending mechanism (4) is fitted over the tubing body of the tubing (3). The two ends of the anti-bending mechanism (4) are respectively installed on the first connecting tube (7) and the second connecting tube (8). The anti-bending mechanism (4) includes a first connecting rod (41) and a second connecting rod (42). (42) has multiple connecting frames (43) hinged in the middle. A fixing clip (45) is fixedly installed at the upper end of the connecting frame (43). The fixing clip (45) is clamped on the surface of the tube body of the hose (3). A second spring (46) is connected between two adjacent fixing clips (45). An extension plate (44) is connected between two adjacent connecting frames (43). The connecting frame (43) includes a waist plate (431). The waist plate (431) is I-shaped in general. Both ends of the waist plate (431) are provided with connecting holes (432). The extension plate (44) includes a connecting frame (441). Two connecting shafts (442) are sleeved in the middle of the connecting frame (441). The two connecting shafts (442) are rotatably connected to two adjacent connecting frames (43). A first spring (443) is also connected between the connecting shaft (442) and the connecting frame (441).
2. The nursing anti-folding drainage device according to claim 1, characterized in that: The drainage bottle (1) includes a bottle body (11), the upper end of which is connected to a pipe opening (12), an overflow pipe (13) is installed inside the bottle body (11), a drain outlet (15) is opened at the bottom of the bottle body (11), and a drain valve cover (14) is rotatably installed at the bottom of the bottle body (11), the drain valve cover (14) is installed at the bottom of the overflow pipe (13) and the drain outlet (15).
3. The nursing anti-folding drainage device according to claim 1, characterized in that: The guide tube (5) includes a tape (51), a rotating sleeve (52) is fixedly installed in the middle of the tape (51), the rotating sleeve (52) is rotatably connected to the steering head (6), and an internal tube (53) is fixedly connected to the upper end of the rotating sleeve (52).
4. The nursing anti-folding drainage device according to claim 1, characterized in that: The steering head (6) includes a connecting shell (61), a sleeve (62) is fixedly installed on the upper end of the connecting shell (61), a U-shaped swing groove (64) is opened in the middle of the connecting shell (61), and an installation sleeve (63) is fixedly connected inside the connecting shell (61).
5. A nursing drainage device with anti-folding properties according to claim 4, characterized in that: The first connecting pipe (7) includes a first connector (74) and a first tee (71) with openings at both ends. The first tee (71) is T-shaped and connected to the top of the first connector (74). The two ends of the first tee (71) are rotatably sleeved on the mounting sleeve (63). The first protective sleeve (72) is fixedly connected to the outside of the first connector (74). The bottom end of the first protective sleeve (72) is fixedly connected to a first hinge bracket (73).
6. A nursing drainage device with anti-folding properties according to claim 4, characterized in that: The second connecting pipe (8) includes a second connector (84) and a second tee (81) with openings at both ends. The second tee (81) is T-shaped and connected to the top of the second connector (84). The two ends of the second tee (81) are rotatably sleeved on the mounting sleeve (63). The second protective sleeve (82) is fixedly connected to the outside of the second connector (84). The bottom end of the second protective sleeve (82) is fixedly connected to a second hinge bracket (83).
7. A nursing drainage device with anti-folding properties according to claim 1, characterized in that: The hose (3) is S-shaped and coiled on the anti-bend mechanism (4).
Citation Information
Patent Citations
Fixing device for external ventricular drainage
CN114344582A
Urine receiving bag for obstetrics and gynecology department
CN217489371U