Pipeline fixing limiter for critical patient nursing

By designing a flexible pipe protection mechanism and a limiter with a gear and rack structure, the problem of fixing the infusion pipe of critically ill patients when their body position changes or they are under pressure is solved, achieving stable limiting and pressure protection, and avoiding pipe twisting, folding and blockage.

CN120939411APending Publication Date: 2025-11-14THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
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Patent Information

Application Number
CN202511360410.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-23
Publication Date
2025-11-14

AI Technical Summary

Technical Problem

In existing technologies, intravenous infusion tubing for critically ill patients is prone to twisting, folding, or even blockage when the patient's position changes or is subjected to pressure, and tape fixation cannot effectively disperse external pressure.

Method used

Design a limiter consisting of a malleable pipe protection mechanism, including a limit block, a rotating arm, and an air bladder. The air bladder expands to push the positioning column to fix the pipe, and the combination of a gear and rack structure achieves pipe shaping and pressure protection.

Benefits of technology

It achieves stable positioning and pressure protection for infusion tubing in critically ill patients, preventing tubing twisting, folding, and blockage, adapting to changes in patient position, and improving fixation effectiveness.

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Abstract

The invention discloses a pipeline fixing limiter for critical patient nursing, and relates to the technical field of critical patient nursing, the pipeline fixing limiter for critical patient nursing comprises a plastic pipeline protection mechanism, and the plastic pipeline protection mechanism is composed of a plurality of limiting blocks. By arranging a plastic pipeline protection mechanism which is composed of a plurality of limiting blocks and is of a lock A-like structure, the device is placed on the surface of the body of a patient, the device covers the outer side of a pipeline, the positions of the two sides of the pipeline on the surface of the device can be pressed according to the number of the pipeline, and therefore a plurality of channels wrapping the pipeline are formed in the device; the two ends of the rotating arm rotate between the two sets of fixing structures, namely the two sets of fixing blocks, the device is shaped along the surface of the body of a patient, finally, overall rotation free point fixing is carried out on the plastic pipeline protection mechanism, and therefore the device is shaped and fixed. Limiting and anti-pressure protection are achieved on pipelines such as infusion tubes on the body of a patient.
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Description

Technical Field

[0001] This invention relates to the field of critical care nursing technology, specifically to a tube fixing limiter for critical care nursing. Background Technology

[0002] The fixation and protection of infusion tubing and other tubes in critically ill patients is a key aspect of clinical nursing. While medical tape provides basic fixation, it is insufficient to prevent pressure buildup, especially considering patient position changes during treatment. Tape only restricts tube displacement and cannot distribute external pressure. When the patient changes position or experiences pressure (such as turning over or limb movement), the tube may twist, fold, or even become blocked due to localized pressure. Therefore, a tube fixation and limiting device for critically ill patients is proposed. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a tube fixing limiter for critical care patients, which solves the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a tube fixation and limiting device for critical care patients, comprising a malleable tube protection mechanism, wherein the malleable tube protection mechanism is composed of several limiting blocks, and adjacent limiting blocks are interconnected by a connecting mechanism. Each limiting block has an air cavity inside, and a connecting mechanism is installed on the four sides of each limiting block near another limiting block. Each connecting mechanism includes two fixing blocks, one end of each fixing block is fixedly installed on the surface of the limiting block, and rotating shafts are rotatably connected to both sides of the two tubes. A rotating arm is fixedly connected between the two rotating shafts, and the other end of the rotating arm is fixedly connected to one end of the other two rotating shafts. A silicone protective layer is provided on the surface of each limiting block.

[0005] Preferably, each of the limiting blocks has a storage cavity inside and at one end of the rotating arm. An airbag is fixedly connected to one end of each storage cavity, a push block is fixedly connected to one end of each airbag, a positioning post is fixedly connected to one end of each push block, and a spring is sleeved on the outside of each positioning post. One end of each spring is fixedly connected to one end of each push block, and the other end of each spring is fixedly connected to one side of the storage cavity.

[0006] Preferably, a plurality of fixing holes are provided on the outer sides of both ends of the rotating arm, and one end of each positioning post extends into the corresponding fixing hole.

[0007] Preferably, two adjacent fixing blocks form a set of fixing structures, and only one fixing block in each set of fixing structures is equipped with a first rotary joint. One end of the first rotary joint is equipped with a conduit, and the other end of the first rotary joint is equipped with a connecting pipe. One end of the connecting pipe passes through the rotating arm and is connected to one end of a first rotary joint in another set of fixing structures.

[0008] Preferably, a connector is fixedly connected inside the limiting block and between the air cavity and the receiving cavity, with both ends of the connector extending into the air cavity and the airbag, respectively.

[0009] Preferably, a butterfly valve is fixedly connected to the surface of one of the limiting blocks in the plastic pipe protection mechanism. One end of the butterfly valve extends into the air chamber, and an external threaded end is fixedly connected to the top of the butterfly valve. An internal threaded sleeve is threaded to the outer side of the external threaded end, and a connecting end is fixedly connected to the top of the internal threaded sleeve. One end of the connecting end extends into the external threaded end, and a sealing gasket is installed on the outer side of one end of the connecting end and inside the external threaded end.

[0010] Preferably, a rotating ring is fixedly sleeved on the outer side of the top end of the connecting end, a second rotary joint is installed on the top end of the connecting end, a fixed tube is installed on one end of the second rotary joint, a fixed rod is fixedly connected to one side of the fixed tube, a storage box is fixedly connected to one side of the butterfly valve, the bottom end of the fixed rod extends into the interior of the storage box, one end of the valve shaft of the butterfly valve extends into the interior of the storage box and is fixedly sleeved with a gear, and a plurality of tooth grooves are opened on the surface of the rack, and all the tooth grooves mesh with the gear.

[0011] Preferably, one end of the fixed tube is fixedly connected to a driver, the driver has an internal mounting cavity, a pressure pump is fixedly installed inside the mounting cavity, one end of the pressure pump extends to the outside of the driver and is connected to one end of the hose, a pressure gauge is installed at the connection between the one end of the pressure pump and the one end of the hose, a gas cylinder is fixedly connected inside the driver, one end of the pressure pump is fixedly connected to one end of the gas cylinder, and a controller is fixedly connected to the top of the driver.

[0012] This invention provides a tube fixing limiter for critical care patients, which has the following beneficial effects: 1. This tube fixation and limiting device for critical care patients uses a malleable tube protection mechanism with a "chainmail"-like structure composed of several limiting blocks. The device is placed on the patient's body surface, covering the outside of the tubes. Depending on the number of tubes, pressure can be applied to both sides of the tubes on the device's surface to create several channels that enclose the tubes. During this process, the rotating arm rotates between two sets of fixing structures (two sets of fixing blocks) to shape the device along the patient's body surface. Finally, the malleable tube protection mechanism is fixed at its overall rotational free point, thus shaping and fixing the device, thereby limiting and protecting the infusion tubes and other tubing on the patient from pressure.

[0013] 2. This critical care patient care pipe fixing limiter, equipped with gears, racks, and toothed grooves, allows for the following operation: Before using the malleable pipe protection mechanism, when connecting the connecting end and the external threaded end, the connecting end is turned downwards, causing the fixing rod to move downwards simultaneously. This drives the rack and several toothed grooves on its surface to move downwards, thereby driving the gear to rotate. When the connecting end and the external threaded end are separated, the rotating ring, the connecting end, the fixing rod, the rack, and several toothed grooves on the rack surface move upwards, driving the gear to rotate in the opposite direction. The gear then drives the valve stem connected to the valve plate inside the butterfly valve to rotate, thereby driving the valve plate to rotate and opening or closing the butterfly valve to shape and fix the malleable pipe protection mechanism. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the driver structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the plastic pipe protection mechanism of the present invention; Figure 4 This is a schematic diagram of the internal structure of the limiting block of the present invention; Figure 5 This is a schematic diagram of the connection structure between the limiting block and the driver of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point A; Figure 7 This is a schematic diagram of the structure of the plastic pipe protection mechanism of the present invention; Figure 8 This is a schematic diagram of the shape of the plastic pipe protection mechanism of the present invention.

[0015] In the diagram: 1. Flexible pipe protection mechanism; 2. Limiting block; 3. Butterfly valve; 4. Air chamber; 5. Receiving chamber; 6. Airbag; 7. Positioning column; 8. Spring; 9. Fixing block; 10. Conduit; 11. First rotary joint; 12. Rotating arm; 13. Connecting pipe; 14. Fixing hole; 15. Connector; 16. Push block; 17. Storage box; 18. Fixing pipe; 19. Second rotary joint; 20. Rotary ring; 21. Internal threaded sleeve; 22. External threaded end; 23. Sealing gasket; 24. Gear; 25. Rack; 26. Gear groove; 27. Connecting end; 28. Fixing rod; 29. ​​Driver; 30. Pressure pump; 31. Gas cylinder; 32. Controller; 33. Hoses; 34. Rotating shaft; 35. Medical tape; 36. Connecting mechanism; 37. Mounting chamber; 38. Pressure gauge. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] Example 1 Please see Figure 1 , Figures 3 to 5 , Figure 7 and Figure 8 The present invention provides a technical solution: a tube fixation limiter for critical care patients, including a malleable tube protection mechanism 1, which is composed of several limiting blocks 2, and adjacent limiting blocks 2 are connected to each other by a connecting mechanism 36. Each limiting block 2 has an air chamber 4 inside. Each of the four sides of the limiting block 2 near another limiting block 2 is equipped with a connecting mechanism 36. Each connecting mechanism 36 includes two fixing blocks 9, one end of each fixing block 9 is fixedly installed on the surface of the limiting block 2. Rotating shafts 34 are rotatably connected to both sides of the two tubes 10. Rotating arms 12 are fixedly connected between the two rotating shafts 34. The other end of the rotating arm 12 is fixedly connected to one end of the other two rotating shafts 34.

[0018] The limiting block 2 has a storage cavity 5 inside and at one end of the rotating arm 12. An airbag 6 is fixedly connected to one end of the storage cavity 5. A push block 16 is fixedly connected to one end of the airbag 6. A positioning post 7 is fixedly connected to one end of the push block 16. A spring 8 is sleeved on the outside of the positioning post 7. One end of the spring 8 is fixedly connected to one end of the push block 16. The other end of the spring 8 is fixedly connected to one side of the storage cavity 5. The spring 8 can limit and store the push block 16 and the positioning post 7 into the storage cavity 5.

[0019] The rotating arm 12 has several fixing holes 14 on the outer side of both ends. One end of the positioning post 7 extends into the corresponding fixing hole 14. The positioning post 7 cooperates with several fixing holes 14 on the outer side of one end of the rotating arm 12 to limit and fix the angle position of the rotating arm 12.

[0020] Two adjacent fixing blocks 9 form a set of fixing structures, and only one fixing block 9 in each set of fixing structures is equipped with a first rotary joint 11. One end of the first rotary joint 11 is equipped with a conduit 10, and the other end of the first rotary joint 11 is equipped with a connecting pipe 13. One end of the connecting pipe 13 passes through the rotating arm 12 and is connected to one end of a first rotary joint 11 in another set of fixing structures. Through the first rotary joint 11, the conduit 10, and the connecting pipe 13, the limiting blocks 2 can be connected to each other.

[0021] The limiting block 2 is fixedly connected to the air cavity 4 and the receiving cavity 5. The two ends of the connector 15 extend into the air cavity 4 and the air bag 6 respectively, so that the air cavity 4 and the air bag 6 are internally connected through the connector 15.

[0022] Example 2 Please see Figures 1 to 3 , Figure 5 and Figure 6 The present invention provides a technical solution: a butterfly valve 3 is fixedly connected to the surface of one of the limiting blocks 2 in a plastic pipe protection mechanism 1. One end of the butterfly valve 3 extends into the air chamber 4. An external threaded end 22 is fixedly connected to the top of the butterfly valve 3. An internal threaded sleeve 21 is threadedly connected to the outer side of the external threaded end 22. A connecting end 27 is fixedly connected to the top of the internal threaded sleeve 21. One end of the connecting end 27 extends into the external threaded end 22. A sealing gasket 23 is installed on the outer side of one end of the connecting end 27 and inside the external threaded end 22. The sealing gasket 23 seals the connection end 27 and the external threaded end 22.

[0023] Among them, a rotating ring 20 is fixedly sleeved on the outer side of the top end of the connecting end 27, a second rotary joint 19 is installed on the top end of the connecting end 27, a fixed tube 18 is installed on one end of the second rotary joint 19, a fixed rod 28 is fixedly connected to one side of the fixed tube 18, a storage box 17 is fixedly connected to one side of the butterfly valve 3, the bottom end of the fixed rod 28 extends into the interior of the storage box 17, one end of the valve shaft of the butterfly valve 3 extends into the interior of the storage box 17 and is fixedly sleeved with a gear 24, a number of tooth grooves 26 are opened on the surface of the rack 25, and the tooth grooves 26 mesh with the gear 24. Through the cooperation of the tooth grooves 26 and the gear 24, the valve stem inside the butterfly valve 3 can be driven to rotate the valve plate installed on the valve stem, and the function of opening or closing the butterfly valve 3 is realized by the rotating valve plate.

[0024] The fixed tube 18 is fixedly connected to one end of a driver 29. The driver 29 has an installation cavity 37 inside, and a pressure pump 30 is fixedly installed inside the installation cavity 37. One end of the pressure pump 30 extends to the outside of the driver 29 and is connected to one end of a hose 33. A pressure gauge 38 is installed at the connection between one end of the pressure pump 30 and one end of the hose 33. A gas cylinder 31 is fixedly connected inside the driver 29. One end of the pressure pump 30 is fixedly connected to one end of the gas cylinder 31. A controller 32 is fixedly connected to the top of the driver 29. A rechargeable battery is fixedly connected to one side of the driver 29 to supply power to the pressure gauge 38, the controller 32, and the pressure pump 30.

[0025] In summary, when using this critical care patient care pipe fixing limiter, one end of the internal thread sleeve 21 is fitted onto the outside of the top of the external thread end 22, so that the fixing rod 28 is aligned with the opening at the top of the storage box 17. Then, the rotating ring 20 is turned, causing the rotating ring 20 to drive the connecting end 27 and the internal thread sleeve 21 to rotate, so that the internal thread sleeve 21 is screwed onto the outside of the external thread end 22, so that the bottom end of the connecting end 27 is inserted into the interior of the external thread end 22, so that the bottom end of the fixing rod 28 is inserted into the interior of the storage box 17. During the downward movement of the rack 25, the rack 25 drives the gear 24 to rotate through several tooth grooves 26, so that the gear 24 drives the valve stem to rotate, thereby driving the valve plate to rotate through the valve stem, so that the butterfly valve 3 is in the connected state. Then place the device on the patient's body surface and cover the outside of the tube. Depending on the number of tubes, press the positions on both sides of the tubes on the surface of the device to form several channels that wrap around the tubes. During this process, the device is shaped along the patient's body surface by rotating the two ends of the rotating arm 12 between the two sets of fixed structures, namely the two sets of fixed blocks 9. Then, the controller 32 starts the pressurizing pump 30, causing one end of the pressurizing pump 30 to extract the gas from the gas cylinder 31. The pressurized gas is then introduced into the hose 33 and the fixed pipe 18, the second rotary joint 19, the connecting end 27 and the external thread end 22, and the butterfly valve 3. The gas then enters the gas chamber 4. The gas inside the gas chamber 4 enters the air bag 6 through the connector 15, causing the air bag 6 to expand and push the push block 16 and the positioning pin 7 to overcome the elastic support force of the spring 8 on the push block 16, thereby pushing one end of the positioning pin 7 to insert into the corresponding... The fixed hole 14 is used to limit and fix the position of the rotating arm 12. During this process, the gas inside the air chamber 4 enters the first rotary joint 11 through the conduit 10, and then enters the other first rotary joint 11 and conduit 10 through the connecting pipe 13, thereby entering the other air chamber 4 and fixing the position of the nearby limiting block 2. This shapes the device and forms a protective shell that protects the patient's body and the pipeline. The protective shell can withstand a certain pressure, preventing the pipeline from being squeezed and blocked. When in use, the device can be used to limit the tube on the patient's body, such as the arm and leg. The device can be wrapped around the arm and leg and then shaped to limit and fix the tube. Alternatively, after shaping the device, medical tape 35 can be used to stick the device to the patient's body surface. When the device needs to be removed after use, the gas inside the air chambers 4 of several limit blocks 2 is extracted by the pressure pump 30, causing the air bag 6 to contract. The elastic force of the spring 8 pushes the push block 16 and the positioning post 7 to move, so that one end of the positioning post 7 moves out of the fixing hole 14, releasing the limiting fixation of the rotating arm 12. One end of the pressure pump 30 discharges the gas into the gas cylinder 31 for storage. Then, the user resets and rotates the rotating ring 20, so that the rotating ring 20 drives the internal thread sleeve 21 to reset and rotate, so that the internal thread sleeve 21 is screwed upwards towards the external thread end 22, so that the internal thread sleeve 21 and the rack 25 move upwards. The rack 25 drives the tooth groove 26 to move upwards, and through the tooth groove 26, the gear 24 drives the valve stem and valve plate to reset and rotate, closing the butterfly valve 3.

[0026] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The installation methods between equipment are also the same as conventional installation methods in the prior art. For example, the two ends of shaft-shaped parts are connected by bearings, the connection position of valve components is provided with anti-leakage rubber strips, the outside of threaded rods or lead rods is provided with dust covers, and the equipment can be driven by either built-in batteries or external power supply. The control method is automatic control by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this invention is mainly used to protect mechanical devices, this invention will not explain the control method and circuit connection in detail. The external controller mentioned in the specification can play a control role for the electrical components mentioned herein, and the external controller is a conventional known device.

[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tube fixing limiter for critical care patients, characterized in that: The device includes a plastic pipe protection mechanism (1), which is composed of several limiting blocks (2). Adjacent limiting blocks (2) are connected to each other by a connecting mechanism (36). Each limiting block (2) has an air cavity (4) inside. Each of the four sides of the limiting block (2) near another limiting block (2) is equipped with a connecting mechanism (36). Each connecting mechanism (36) includes two fixing blocks (9). One end of each fixing block (9) is fixedly installed on the surface of the limiting block (2). Both sides of the two conduits (10) are rotatably connected to a rotating shaft (34). A rotating arm (12) is fixedly connected between the two rotating shafts (34). The other end of the rotating arm (12) is fixedly connected to one end of the other two rotating shafts (34).

2. The tube fixing limiter for critical care patients according to claim 1, characterized in that: The limiting block (2) has a storage cavity (5) inside and at one end of the rotating arm (12). An airbag (6) is fixedly connected to one end of the inner cavity of the storage cavity (5). A push block (16) is fixedly connected to one end of the airbag (6). A positioning post (7) is fixedly connected to one end of the push block (16). A spring (8) is sleeved on the outside of the positioning post (7). One end of the spring (8) is fixedly connected to one end of the push block (16), and the other end of the spring (8) is fixedly connected to one side of the inner cavity of the storage cavity (5).

3. The tube fixing and limiting device for critical care patients according to claim 1, characterized in that: Several fixing holes (14) are provided on the outer sides of both ends of the rotating arm (12), and one end of the positioning post (7) extends into the corresponding fixing hole (14).

4. The tube fixing and limiting device for critical care patients according to claim 1, characterized in that: Two adjacent fixing blocks (9) form a set of fixing structures, and only one fixing block (9) in each set of fixing structures is equipped with a first rotary joint (11). One end of the first rotary joint (11) is equipped with a conduit (10), and the other end of the first rotary joint (11) is equipped with a connecting pipe (13). One end of the connecting pipe (13) passes through the rotating arm (12) and is connected to one end of a first rotary joint (11) in another set of fixing structures.

5. A tube fixing limiter for critical care patients according to claim 1, characterized in that: The limiting block (2) is fixedly connected to a connector (15) located between the air cavity (4) and the storage cavity (5), with the two ends of the connector (15) extending into the air cavity (4) and the air bag (6) respectively.

6. A tube fixing limiter for critical care patients according to claim 1, characterized in that: A butterfly valve (3) is fixedly connected to the surface of one of the limiting blocks (2) in the plastic pipe protection mechanism (1). One end of the butterfly valve (3) extends into the air chamber (4). An external thread end (22) is fixedly connected to the top of the butterfly valve (3). An internal thread sleeve (21) is threaded to the outer side of the external thread end (22). A connecting end (27) is fixedly connected to the top of the internal thread sleeve (21). One end of the connecting end (27) extends into the external thread end (22). A sealing gasket (23) is installed on the outer side of the connecting end (27) and inside the external thread end (22).

7. A tube fixing limiter for critical care patients according to claim 1, characterized in that: A rotating ring (20) is fixedly sleeved on the outer side of the top end of the connecting end (27). A second rotating joint (19) is installed on the top end of the connecting end (27). A fixed tube (18) is installed on one end of the second rotating joint (19). A fixed rod (28) is fixedly connected to one side of the fixed tube (18). A storage box (17) is fixedly connected to one side of the butterfly valve (3). The bottom end of the fixed rod (28) extends into the interior of the storage box (17). One end of the valve shaft of the butterfly valve (3) extends into the interior of the storage box (17) and is fixedly sleeved with a gear (24). A number of tooth grooves (26) are opened on the surface of the rack (25), and the tooth grooves (26) mesh with the gear (24).

8. A tube fixing limiter for critical care patients according to claim 1, characterized in that: One end of the fixed tube (18) is fixedly connected to a driver (29). The driver (29) has an installation cavity (37) inside. A pressure pump (30) is fixedly installed inside the installation cavity (37). One end of the pressure pump (30) extends to the outside of the driver (29) and is connected to one end of the hose (33). A pressure gauge (38) is installed at the connection between one end of the pressure pump (30) and one end of the hose (33). A gas cylinder (31) is fixedly connected inside the driver (29). One end of the pressure pump (30) is fixedly connected to one end of the gas cylinder (31). A controller (32) is fixedly connected to the top of the driver (29).