Fistulization tube anti-falling device capable of eliminating friction falling

By designing a device to prevent the stoma tube from falling off due to friction, and using a combination of sterile adhesive and adjustment mechanism, the stoma tube is fixed in all directions, solving the problem of the stoma tube falling off due to friction, and improving the fixation effect and patient comfort.

CN224207206UActive Publication Date: 2026-05-08XIEHE HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI & TECH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XIEHE HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI & TECH UNIV
Filing Date
2025-02-17
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing methods of fixing stoma tubes are prone to falling off due to friction during use, affecting normal function and increasing harm to patients. Furthermore, sterile dressings cannot effectively resist the movement of the stoma tube.

Method used

Design a device to prevent stoma tube from falling off due to friction, including a sterile patch, an installation component and an adjustment mechanism. By adjusting the convergence and dispersion of four anti-dislodgement locking blocks, the stoma tube can be fixed in all directions.

Benefits of technology

It improves the fixation effect of the stoma tube, avoids dislodgement due to friction, reduces skin friction damage, and enhances fixation stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a medical instrument, in particular to a fistulization tube anti-falling device capable of eliminating friction falling, which comprises a sterile patch and a mounting piece fixed on the sterile patch, and four anti-falling clamping blocks are movably mounted on the mounting piece in a circumferential array manner; the fistulization tube further comprises an adjusting mechanism which rotates on the mounting part and is in sliding connection with the four anti-disengaging clamping blocks, and when the adjusting mechanism rotates on the mounting part, the four anti-disengaging clamping blocks are driven to be gathered and abut against the fistulization tube body. According to the fistulization tube anti-falling device capable of eliminating friction falling, the structural combination and the connection relation are reasonably designed, the adjusting mechanism is rotationally adjusted on the installation piece, the four anti-falling clamping blocks in an annular array can gather and abut against the fistulization tube body, displacement of the fistulization tube body is limited, and the fistulization tube body is prevented from falling off. The mounting piece, the adjusting mechanism and the anti-falling clamping block are all mounted on the sterile patch, and the sterile patch is tightly and comprehensively attached to the skin of a patient.
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Description

Technical Field

[0001] This utility model relates to a medical device, specifically a device to prevent the stoma tube from falling off due to friction. Background Technology

[0002] A stoma is a tube used for medical purposes, surgically connecting a part of the body to the outside. It is usually used to excrete waste or drain fluids. Its main function is to help patients who cannot excrete waste through normal means, such as those who need external support to maintain normal physiological functions due to illness, surgery, or other reasons.

[0003] During the use of stoma tubes, a very tricky problem often arises. Because the extension end of the stoma tube needs to be in direct contact with the patient's skin, friction will occur between the stoma tube and the patient's clothing, sheets, or blankets during daily activities. This friction is particularly noticeable when the patient moves or changes position, especially during dressing, turning over, walking, or sleeping. When the friction is too great, it can easily pull on the stoma tube inserted into the body, causing it to partially or completely fall out. This fallout not only directly affects the normal function of the stoma tube, but also causes additional secondary injuries to the patient. Losing the originally fixed stoma tube may force the patient to undergo multiple emergency treatments or medical procedures, thereby further increasing the patient's medical burden.

[0004] Currently, many methods of fixing stoma tubes involve using sterile dressings to tightly adhere them to the patient's skin. While this method can reduce friction between the stoma tube and external items such as clothing and sheets, thus minimizing unnecessary external forces, several problems remain in practical application, particularly regarding fixation effectiveness and stability. Because the stoma tube itself is cylindrical, this shape results in less than ideal adhesion between the sterile dressing and the tube. Stoma dressings are typically designed for planar surfaces, leading to point-to-point or line-to-line contact with the tube, rather than complete coverage of the cylindrical surface. Since the stoma tube cannot be fully covered by the sterile dressing, this... This type of contact significantly reduces the effectiveness of fixation, failing to provide stable, all-around support. This design flaw is particularly noticeable during patients' daily activities. When patients turn over, walk, or perform other actions that may cause the stoma tube to shift, the extended portion of the tube often experiences pulling forces from the body or external clothing. If the fixation is inadequate, the contact surface between the sterile dressing and the skin will slip, causing the sterile dressing to be unable to effectively resist the movement of the stoma tube. This results in the tube shifting or being pulled on the skin. In such cases, patients not only face the risk of the stoma tube falling off but may also experience adverse reactions such as abrasions, redness, swelling, or ulceration, increasing the complexity of medical management. Utility Model Content

[0005] The purpose of this invention is to provide a device to prevent the stoma tube from falling off due to friction, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A device for preventing stoma tube dislodgement due to friction, used to fix the stoma tube body to the human body, comprising:

[0008] A sterile patch and an installation component fixed on the sterile patch, wherein four anti-detachment locking blocks are movably mounted in a circumferential array on the installation component;

[0009] It also includes an adjustment mechanism that rotates on the mounting component and is slidably connected to the four anti-dislodgement locking blocks. When the adjustment mechanism rotates on the mounting component, it causes the four anti-dislodgement locking blocks to converge and abut against the stoma tube body, or to disperse and move away from the stoma tube body.

[0010] As described above, a device for preventing the stoma tube from falling off due to friction is provided: the mounting component includes an anti-detachment base fixed on the side away from the sterile adhesive surface and a movable groove opened on one side of the anti-detachment base. The anti-detachment base has a hollow cavity inside, and four first guide grooves and four second guide grooves are circularly arrayed on the anti-detachment base on the upper and lower sides of the hollow cavity.

[0011] The bottom outer wall of the anti-detachment base is fixed with a limiting member that is connected to the adjustment mechanism.

[0012] As described above, a device for preventing the stoma tube from falling off due to friction is provided with a silicone strip on the side of the anti-dislodgement locking block facing the stoma tube body. A first guide block is integrally formed on the top of the side of the anti-dislodgement locking block opposite to the silicone strip. The first guide block is slidably connected in the second guide groove. A first end post is fixed on the first guide block.

[0013] A second end post is fixed on the side of the anti-detachment locking block opposite to the first guide block, and a second guide block is fixed on the second end post. The second guide block is slidably connected in the first guide groove.

[0014] As described above, a device for preventing the stoma tube from falling off due to friction is provided in three sets of limiting members. Each set of limiting members includes a fixing strip fixed on the anti-dislodgement base and a spring piece with one end fixed on the fixing strip.

[0015] It also includes engaging teeth fixed to the other end of the spring and protrusions protruding from one side of the engaging teeth.

[0016] As described above, a device for preventing the stoma tube from falling off due to friction: the adjusting mechanism includes a rotating cover mounted on the anti-dislodgement base, an adjusting component fixed inside the rotating cover, and an unlocking component sleeved on the outer wall of the rotating cover;

[0017] The bottom of the rotating cover has multiple engaging grooves that engage with the spring, and the top of the cavity of the rotating cover has four first arc-shaped grooves arranged in a ring array, which are slidably connected to the first end post.

[0018] As described above, a device for preventing the stoma tube from falling off due to friction: the adjusting component includes an extension fixed to the inner wall of the rotating cover, a linkage plate integrally formed on one side of the extension, and four second arc-shaped grooves arranged in a ring array on the linkage plate.

[0019] The extension is slidably connected in the movable groove, the linkage plate rotates in the hollow cavity at the bottom of the anti-detachment base, and the second arc-shaped groove is slidably connected to the second end post.

[0020] As described above, a device for preventing the stoma tube from falling off due to friction is provided: the unlocking component includes an unlocking ring sleeved on the outer wall of the rotating cover and convex strips fixedly connected at equal intervals to the inner wall of the unlocking ring. The convex strips are slidably connected in corresponding grooves opened on the outer wall of the rotating cover, and the bottom of the unlocking ring abuts against the convex strips.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] Through a rationally designed structural combination and connection relationship of the anti-dislodgement device for the stoma tube to eliminate friction and fall off, and by adjusting the mechanism on the mounting component, four ring-shaped anti-dislodgement locking blocks can be brought together and abutted against the stoma tube body, restricting the displacement of the stoma tube body. The mounting component, adjustment mechanism, and anti-dislodgement locking blocks are all installed on the sterile patch, which is tightly and completely attached to the patient's skin. Therefore, when the stoma tube is subjected to friction and a pulling force is generated, the pulling force acts on the mounting component, adjustment mechanism, and anti-dislodgement locking blocks, causing the sterile patch to be pulled. Because the sterile patch is tightly and completely attached to the patient's skin, it can prevent the stoma tube body from falling off due to friction. This eliminates the problem of the sterile patch directly attaching to the stoma tube, where the contact is mainly "point-to-point" or "line-to-line" contact, and cannot fully adhere to the surface of the cylindrical stoma tube, resulting in insufficient anti-dislodgement fixation of the stoma tube, thus improving the anti-dislodgement fixation effect of the stoma tube body. Attached Figure Description

[0023] Figure 1 A schematic diagram of a device to prevent the stoma tube from falling off due to friction.

[0024] Figure 2A schematic diagram of the structure of the anti-dislodgement device for the stoma tube to prevent it from falling off due to friction, from another angle.

[0025] Figure 3 A schematic diagram of the disassembled structure of the anti-dislodgement device for the stoma tube to prevent it from falling off due to friction.

[0026] Figure 4 A schematic diagram of the adjustment mechanism in a device to prevent the stoma tube from falling off due to friction.

[0027] Figure 5 A schematic diagram of the installation components in a device to prevent the stoma tube from falling off due to friction.

[0028] Figure 6 A schematic diagram of the limiting component in a device to prevent the stoma tube from falling off due to friction.

[0029] Figure 7 A schematic diagram of the rotating cover in a device designed to prevent the stoma tube from falling off due to friction.

[0030] Figure 8 A schematic diagram of the unlocking ring in a device designed to prevent the stoma tube from falling off due to friction.

[0031] Figure 9 A schematic diagram of the anti-dislodgement locking block in a device for preventing the stoma tube from falling off due to friction.

[0032] In the diagram: 1. Stoma tube body; 2. Sterile dressing; 3. Anti-detachment base; 4. Movable groove; 5. First guide groove; 6. Second guide groove; 7. Fixing strip; 8. Spring; 9. Engaging teeth; 10. Protrusion; 11. Rotating cover; 12. Engaging groove; 13. First arc-shaped groove; 14. Linkage plate; 15. Extension; 16. Second arc-shaped groove; 17. Unlocking ring; 18. Protrusion; 19. Anti-detachment engaging block; 20. Silicone strip; 21. First guide block; 22. First end post; 23. Second end post; 24. Second guide block. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0034] Please see Figures 1-3 In this embodiment of the utility model, a device for preventing the stoma tube from falling off due to friction is used to fix the stoma tube body 1 to the human body, comprising:

[0035] The sterile patch 2 and the mounting component fixed on the sterile patch 2, wherein four anti-detachment locking blocks 19 are movably mounted in a circumferential array on the mounting component;

[0036] It also includes an adjustment mechanism that rotates on the mounting component and is slidably connected to the four anti-dislodgement locking blocks 19. When the adjustment mechanism rotates on the mounting component, it causes the four anti-dislodgement locking blocks 19 to converge and abut against the stoma tube body 1, or to disperse and move away from the stoma tube body 1.

[0037] In this embodiment, when fixing the stoma tube body 1 to prevent it from falling off, the sterile patch 2 is tightly and completely attached to the patient's skin. The sterile patch 2, the mounting piece, the adjustment mechanism, and the anti-falling locking block 19 are all provided with U-shaped embedding grooves corresponding to the stoma tube body 1. The anti-falling device of the stoma tube, which eliminates friction and falls off, can be fixed to the body around the stoma tube body 1 that has been inserted into the body. By adjusting the adjustment mechanism on the mounting piece, the four anti-falling locking blocks 19 can be brought together or dispersed away from the stoma tube body 1, thereby controlling the contact and separation state of the four anti-falling locking blocks 19 on the stoma tube body 1.

[0038] The sterile patch 2 is installed on the patient's skin via an installation component, adjustment mechanism, and anti-dislodgement locking blocks 19. The sterile patch 2 can fit tightly and completely against the patient's skin. When the stoma tube body 1 is pulled by friction, the four anti-dislodgement locking blocks 19 prevent the stoma tube body 1 from shifting. Therefore, when the stoma tube body 1 is pulled, the pulling force will act on the sterile patch 2. Because the sterile patch 2 fits tightly and completely against the patient's skin, it eliminates the problem of the sterile patch 2 directly contacting the stoma tube body 1, which is mainly a "point-to-point" or "line-to-line" contact and cannot fully fit the surface of the cylindrical stoma tube body 1. This results in insufficient anti-dislodgement fixation of the stoma tube body 1. Therefore, when the stoma tube body 1 is pulled, it can prevent its displacement, thereby preventing the stoma tube body 1 from being pulled out of the patient's body and improving the anti-dislodgement fixation effect of the stoma tube body 1.

[0039] Please see Figure 3 , Figure 5 and Figure 9 As a further embodiment of this utility model, the mounting component includes an anti-detachment base 3 fixed on the side opposite to the adhesive surface of the sterile patch 2 and a movable groove 4 opened on one side of the anti-detachment base 3. The anti-detachment base 3 has a hollow cavity inside, and four first guide grooves 5 and four second guide grooves 6 are circularly arrayed on the anti-detachment base 3 on the upper and lower sides of the hollow cavity.

[0040] The bottom outer wall of the anti-detachment base 3 is fixed with a limiting member that is connected to the adjustment mechanism.

[0041] A silicone strip 20 is provided on the side of the anti-dislodgement locking block 19 facing the fistula tube body 1. A first guide block 21 is integrally formed on the top of the side of the anti-dislodgement locking block 19 opposite to the silicone strip 20. The first guide block 21 is slidably connected in the second guide groove 6. A first end post 22 is fixed on the first guide block 21.

[0042] A second end post 23 is fixed on the side of the anti-detachment locking block 19 opposite to the first guide block 21. A second guide block 24 is fixed on the second end post 23. The second guide block 24 is slidably connected in the first guide groove 5.

[0043] In this embodiment, the adhesive side of the sterile patch 2 is attached to the patient's skin, and the anti-detachment base 3 is fixed on the sterile patch 2. The upper and lower sides of the hollow cavity of the anti-detachment base 3 are provided with a second guide groove 6 and a first guide groove 5, which are respectively slidably connected to the first guide block 21 and the second guide block 24. This can restrict the anti-detachment locking block 19 to reciprocate and move along the orientation of the first guide groove 5 and the second guide groove 6 within the hollow cavity of the anti-detachment base 3. This allows the four anti-detachment locking blocks 19 to come together to abut and lock the stoma tube body 1, or to disperse and move away from each other, thus satisfying the purpose of preventing the stoma tube body 1 from falling off and fixing it.

[0044] Please see Figure 4 , Figure 6 , Figure 7 and Figure 8 As a further embodiment of this utility model, the adjustment mechanism includes a rotating cover 11 mounted on the anti-detachment base 3, an adjustment component fixed inside the rotating cover 11, and an unlocking component sleeved on the outer wall of the rotating cover 11.

[0045] The bottom of the rotating cover 11 is provided with a plurality of engaging grooves 12 that engage with the spring 8, and the top of the cavity of the rotating cover 11 is provided with four first arc-shaped grooves 13 arranged in a ring array, the first arc-shaped grooves 13 being slidably connected to the first end post 22.

[0046] The adjusting component includes an extension 15 fixed to the inner wall of the rotating cover 11, a linkage plate 14 integrally formed on one side of the extension 15, and four second arc-shaped grooves 16 arranged in a ring array on the linkage plate 14.

[0047] The extension 15 is slidably connected in the movable groove 4, the linkage plate 14 rotates in the hollow cavity at the bottom of the anti-detachment base 3, and the second arc-shaped groove 16 is slidably connected to the second end post 23.

[0048] The unlocking component includes an unlocking ring 17 sleeved on the outer wall of the rotating cover 11 and protrusions 18 equidistantly fixed to the inner wall of the unlocking ring 17. The protrusions 18 are slidably connected in a corresponding groove on the outer wall of the rotating cover 11, and the bottom of the unlocking ring 17 abuts against the protrusions 10.

[0049] The limiting component is provided in three sets. Each set of the limiting component includes a fixing strip 7 fixed on the anti-detachment base 3 and a spring 8 with one end fixed on the fixing strip 7.

[0050] It also includes a locking tooth 9 fixed to the other end of the spring 8 and a protrusion 10 protruding from one side of the locking tooth 9.

[0051] In this embodiment, when rotating the rotating cover 11, the unlocking ring 17 is pressed down. As the bottom of the unlocking ring 17 abuts against the protrusion 10, the protrusion 10 descends. Since the protrusion 10 is fixed to the engaging tooth 9, and the engaging tooth 9 is fixed to one end of the spring 8, when the protrusion 10 descends, the spring 8 at one end of the protrusion 10 is pressed down. At this time, the engaging tooth 9, which engages with the engaging groove 12, disengages, allowing... This allows the rotating cover 11 to rotate on the anti-detachment base 3. Because the top of the cavity of the rotating cover 11 has a first arc-shaped groove 13 that slides with the first end post 22, and the linkage plate 14 fixed to the inner wall of the rotating cover 11 has a second arc-shaped groove 16 that slides with the second end post 23, when the rotating cover 11 is rotated, the first end post 22 and the second end post 23 can move under the contact of the first arc-shaped groove 13 and the second arc-shaped groove 16. At this time, the four anti-detachment locking blocks 19... The anti-dislodgement blocks 19 will gather or disperse inside the anti-dislodgement base 3 to fix and prevent dislodgement of the stoma tube body 1. The design of the first arc groove 13 and the second arc groove 16 allows the anti-dislodgement locking blocks 19 to move within the hollow cavity of the anti-dislodgement base 3 when the rotating cover 11 rotates to either side. The linkage plate 14 is fixed inside the rotating cover 11 by the extension 15 on one side. When the linkage plate 14 rotates, the extension 15 slides in the movable groove 4 without affecting the rotation. After the anti-dislodgement locking blocks 19 are adjusted, the spring 8 will return to its original position due to the elastic force when the hand is released. At this time, the locking teeth 9 will engage in the locking groove 12. Through the engagement of the locking teeth 9 and the locking groove 12, the unlocking ring 17 is slidably inserted into the outer wall of the rotating cover 11 by the protrusion 18, which can limit the rotation state of the rotating cover 11, thereby achieving the limited use of the rotating cover 11 after rotation, and preventing the fixation of the stoma tube body 1 from loosening after the four anti-dislodgement locking blocks 19 gather together, thus meeting the usage requirements.

[0052] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A device for preventing the stoma tube from falling off due to friction, used to fix the stoma tube body (1) to the human body, characterized in that, include: The sterile patch (2) and the mounting component fixed on the sterile patch (2) are provided with four anti-detachment locking blocks (19) movably mounted in a circumferential array on the mounting component. It also includes an adjustment mechanism that rotates on the mounting and is slidably connected to the four anti-dislodgement locking blocks (19). When the adjustment mechanism rotates on the mounting, it causes the four anti-dislodgement locking blocks (19) to converge and abut against the stoma tube body (1), or to disperse and move away from the stoma tube body (1).

2. The anti-dislodgement device for stoma tubes to prevent friction and fall off according to claim 1, characterized in that, The mounting component includes an anti-detachment base (3) fixed on the side opposite to the adhesive surface of the sterile patch (2) and a movable groove (4) opened on one side of the anti-detachment base (3). The anti-detachment base (3) has a hollow cavity inside. Four first guide grooves (5) and four second guide grooves (6) are circularly arranged on the anti-detachment base (3) on the upper and lower sides of the hollow cavity. The bottom outer wall of the anti-detachment base (3) is fixed with a limiting member that is connected to the adjustment mechanism.

3. The anti-dislodgement device for stoma tubes to prevent friction and fall off according to claim 2, characterized in that, The anti-dislodgement locking block (19) is provided with a silicone strip (20) on the side facing the fistula tube body (1). A first guide block (21) is integrally formed on the top of the side of the anti-dislodgement locking block (19) away from the silicone strip (20). The first guide block (21) is slidably connected in the second guide groove (6). A first end post (22) is fixed on the first guide block (21). A second end post (23) is fixed on the side of the anti-detachment locking block (19) opposite to the first guide block (21), and a second guide block (24) is fixed on the second end post (23). The second guide block (24) is slidably connected in the first guide groove (5).

4. The anti-dislodgement device for stoma tubes to prevent friction and fall off according to claim 3, characterized in that, The limiting component is provided in three sets. Each set of the limiting component includes a fixing strip (7) fixed on the anti-detachment base (3) and a spring piece (8) with one end fixed on the fixing strip (7). It also includes a locking tooth (9) fixed to the other end of the spring (8) and a protrusion (10) protruding from one side of the locking tooth (9).

5. The anti-dislodgement device for stoma tubes to prevent friction and fall off according to claim 4, characterized in that, The adjustment mechanism includes a rotating cover (11) mounted on the anti-detachment base (3), an adjustment component fixed inside the rotating cover (11), and an unlocking component sleeved on the outer wall of the rotating cover (11); The bottom of the rotating cover (11) is provided with multiple engaging grooves (12) that engage with the spring (8), and the top of the cavity of the rotating cover (11) is provided with four first arc-shaped grooves (13) arranged in a ring array. The first arc-shaped grooves (13) are slidably connected to the first end post (22).

6. The anti-dislodgement device for stoma tubes according to claim 5, characterized in that, The adjusting component includes an extension (15) fixed to the inner wall of the rotating cover (11), a linkage plate (14) integrally formed on one side of the extension (15), and four second arc-shaped grooves (16) arranged in a ring on the linkage plate (14). The extension (15) is slidably connected in the movable groove (4), the linkage plate (14) rotates in the hollow cavity at the bottom of the anti-detachment base (3), and the second arc groove (16) is slidably connected to the second end post (23).

7. The anti-dislodgement device for stoma tubes to prevent friction and fall off according to claim 6, characterized in that, The unlocking component includes an unlocking ring (17) sleeved on the outer wall of the rotating cover (11) and a protrusion (18) fixedly connected at equal intervals to the inner wall of the unlocking ring (17). The protrusion (18) is slidably connected in a corresponding groove on the outer wall of the rotating cover (11). The bottom of the unlocking ring (17) abuts against the protrusion (10).