A kink prevention medical catheter holder

Abstract

This invention discloses an anti-bend medical catheter fixator, relating to the technical field of catheter fixation. It includes an adhesive strip with a first and second adhesive strip. A catheter fixation component is fixed to the adhesive strip. The multi-point fixation design of the adhesive strip, the first adhesive strip, and the second adhesive strip significantly improves overall stability and avoids the loosening issues common with traditional single-point fixation. The catheter fixation component integrates a first half-ring, a second half-ring, and a limiting member through a mounting plate to form a triple-locking structure, which firmly clamps the catheter and prevents axial displacement. The anti-bend fixation component connects multiple buckles via a connecting strap, forming a segmented support network when the catheter passes through the joint movement area. When the joint bends, causing a change in the distance between the fixation patch and the adhesive strip, the buckles work together to disperse the catheter deformation into a uniform, large-arc bend, completely eliminating the risk of right-angle bending common in traditional fixation methods.

Description

Technical Field

[0001] This invention relates to the field of catheter fixation technology, and in particular to an anti-bending medical catheter fixator. Background Technology

[0002] Currently, catheters are mainly made of silicone resin. Catheters can be divided into various types and can be inserted into human blood vessels, organs or body cavities through percutaneous puncture or natural cavities for diagnosis, treatment, monitoring or drainage procedures.

[0003] Traditional single-point tape fixation is easily loosened by sweat and oil. When the joint moves, the catheter is prone to 90-degree right-angle bend due to lack of support, which can lead to blockage of the lumen. Especially when crossing the elbow, knee or wrist joint, the redundant length of the catheter can easily cause local compression and bending. Traditional limiting structures cause stress concentration when the catheter is under tension, while rigid fasteners can easily cause the catheter to be pulled and deformed or folded and blocked when the joint moves. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-bend medical catheter fixator with a multi-point fixing design featuring a fitting tape, a first adhesive tape, and a second adhesive tape. This significantly improves overall stability and avoids the loosening issues common with traditional single-point fixation. The catheter fixation assembly integrates a first half-ring, a second half-ring, and a limiting member through a mounting plate to form a triple-locking structure. This structure can firmly clamp the catheter and prevent its axial displacement. The anti-bend fixation assembly connects multiple buckles through a connecting tape, forming a segmented support network when the catheter passes through the joint movement area. When the joint bends, causing a change in the distance between the fixation tape and the fitting tape, the buckles work together to disperse the catheter deformation into a uniform, large-arc bend, completely eliminating the risk of right-angle bending common in traditional fixation methods.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an anti-bending medical catheter fixator, comprising an adhesive strip, wherein a first adhesive strip and a second adhesive strip are disposed on the adhesive strip, and a catheter fixation component is fixed on the adhesive strip;

[0006] The catheter fixing assembly includes a mounting plate, a first half-ring, a second half-ring, and a limiting member. The first half-ring and the second half-ring are fixed on the mounting plate, and the limiting member is provided inside the first half-ring and the second half-ring. One end of the adhesive tape extends to an anti-bending fixing assembly.

[0007] The anti-bending fixing component includes a connecting strap, buckles, fixing stickers, and support members. The connecting strap is provided with several buckles. One end of the connecting strap is connected to the adhesive tape, and the other end is connected to the fixing sticker. The fixing sticker is provided with support members.

[0008] One end of the conduit passes through the first and second half-rings until it passes through the support member to complete the installation. The conduit is fastened to the fitting tape and the fixing tape in the fastener. The fastener supports the conduit. When the conduit is stretched and retracted, several fasteners ensure that the curvature of the conduit will not be flattened when the conduit is bent.

[0009] Furthermore, the limiting member consists of two conical rings, with a semi-annular friction pad provided at the smaller end of each conical ring.

[0010] Furthermore, the fastener includes a U-shaped clip, a connector, and a limiting block. Trapezoidal limiting blocks are respectively provided on the inner walls of both ends of the U-shaped clip, and the lower end of the U-shaped clip is connected to the connecting belt through the connector.

[0011] Furthermore, the lower end face of the fixing sticker is the bonding surface, a U-shaped sticker is connected to the left side of the upper end face of the fixing sticker, and a limiting sticker is connected to the right side of the upper end face of the fixing sticker, with the limiting sticker positioned in the middle of the U-shaped sticker.

[0012] Furthermore, the support member is disposed inside the U-shaped sticker and the limiting sticker, and the support member includes a left half ring and a right half ring, which are respectively fixed on the U-shaped sticker and the limiting sticker.

[0013] Furthermore, as the U-shaped adhesive and the limiting adhesive are applied alternately, the left half ring and the right half ring are driven to merge.

[0014] Furthermore, when the left and right halves of the ring are combined, they form a circular ring that encloses the catheter inside.

[0015] Furthermore, guide rollers are provided on the inner walls of the left and right half rings, and brackets for installing the guide rollers are fixed on the inner walls of the left and right half rings, with the annular surface of the guide rollers in contact with the outer wall of the guide tube.

[0016] Furthermore, a connecting rod is provided below both the first and second half-rings, and a connecting block for docking the connecting rod is provided on the mounting plate. The two ends of the connecting rod are docked with the connecting block through torsion springs.

[0017] Furthermore, the outer walls of the first and second semi-rings are provided with a support frame, which is used to open and close the first and second semi-rings while being pressed.

[0018] The technical effects and advantages of this invention are as follows:

[0019] 1. This invention employs a multi-point fixing design using adhesive tape, a first adhesive tape, and a second adhesive tape, significantly improving overall stability and avoiding the problem of easy loosening with traditional single-point fixing. The catheter fixing assembly integrates a first half-ring, a second half-ring, and a limiting component through a mounting plate to form a triple locking structure, which can firmly clamp the catheter and prevent its axial displacement. Compared with traditional open buckles, this is safer and more reliable. The anti-bending fixing assembly connects multiple buckles through a connecting strap, forming a segmented support network when the catheter passes through the joint movement area. When the joint bends, causing changes in the distance between the fixing patch and the adhesive tape, each buckle works in concert. The same action disperses the catheter deformation into a uniform large-arc bend, completely eliminating the risk of right-angle bending common in traditional fixation methods. The end combination design of the support and fixation pad not only provides catheter outlet positioning but also forms the last anti-bend barrier, forming a double protection that echoes the front semi-ring structure. The whole adopts a modular design, and the spacing of the catheter fixation component and anti-bend fixation component can be flexibly adjusted for different tube diameters to adapt to catheter needs. All contact surfaces are treated with medical-grade silicone edging to ensure fixation force while avoiding pressure-induced skin damage, making it particularly suitable for long-term bedridden patients.

[0020] 2. The serpentine arrangement of the buckle components of this invention provides elastic deformation space in both the X and Y axes, ensuring unobstructed flow of the catheter during three-dimensional movement. The telescopic connecting strap of the anti-bend fixation component can adjust its length autonomously with joint movement, avoiding catheter traction or wrinkling problems caused by traditional rigid fixation. The overall structure conforms to ergonomic curves, maintaining comfort even when attached to highly mobile areas such as the knee and elbow joints, significantly improving patient compliance.

[0021] 3. The fixing patch of this invention adopts a three-layer composite structure design of lower end adhesive surface, upper U-shaped patch and limiting patch. The staggered adhesive design of U-shaped patch and limiting patch forms a mechanical interlocking structure. When the left half ring and right half ring are combined, they automatically restore the circular shape, providing 360° support for the catheter without dead angles. The opening orientation design of U-shaped patch and T-shaped structure of limiting patch form an anti-misfit installation mechanism to ensure that reverse adhesion will not occur during clinical operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the catheter fixation assembly structure of the present invention;

[0024] Figure 3 This is a half-sectional view of the first and second semi-ring structures of the present invention;

[0025] Figure 4 This is a schematic diagram of the anti-bending fixing component structure of the present invention;

[0026] Figure 5This is a schematic diagram of the buckle structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the fixing adhesive structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the opening structure of the U-shaped adhesive and the limiting adhesive of the present invention;

[0029] Figure 8 This is a schematic diagram of the guiding roller structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

[0031] Figure 10 For the present invention Figure 9 Enlarged view of point A.

[0032] In the picture:

[0033] 1. Adhesive tape; 11. First adhesive tape; 12. Second adhesive tape; 2. Conduit fixing assembly; 21. Mounting plate; 211. Connecting block; 22. First half ring; 221. Connecting rod; 222. Spreading frame; 23. Second half ring; 24. Limiting component; 241. Conical ring; 242. Semi-annular friction pad; 3. Anti-bending fixing assembly; 31. Connecting tape; 32. Buckle; 321. U-shaped clip; 322. Connecting component; 323. Limiting soft block; 33. Fixing sticker; 331. U-shaped sticker; 332. Limiting sticker; 34. Support component; 341. Left half ring; 342. Right half ring; 4. Guide roller. Detailed Implementation

[0034] 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.

[0035] Example 1: Refer to Figure 1 - Figure 8 The first embodiment of the present invention provides an anti-bending medical catheter fixator, including an adhesive tape 1, on which a first adhesive tape 11 and a second adhesive tape 12 are provided, and a catheter fixation component 2 is fixed on the adhesive tape 1.

[0036] The catheter fixing assembly 2 includes a mounting plate 21, a first half ring 22, a second half ring 23 and a limiting member 24. The first half ring 22 and the second half ring 23 are fixed on the mounting plate 21. The limiting member 24 is provided inside the first half ring 22 and the second half ring 23. One end of the adhesive tape 1 extends to an anti-bending fixing assembly 3.

[0037] The anti-bending fixing component 3 includes a connecting strap 31, buckles 32, fixing stickers 33, and a support member 34. The connecting strap 31 is provided with a plurality of buckles 32. One end of the connecting strap 31 is connected to the adhesive tape 1, and the other end is connected to the fixing sticker 33. The fixing sticker 33 is provided with a support member 34.

[0038] One end of the conduit passes through the first half-ring 22 and the second half-ring 23 until it passes through the support member 34 to complete the installation. The conduit is directly fastened to the adhesive tape 1 and the fixing tape 33 in the fastener 32. The fastener 32 supports the conduit. When the conduit is stretched and retracted, several fasteners 32 ensure that the curvature of the conduit will not be flattened when the conduit is bent. When the fixing tape 33 and the adhesive tape 1 are attached to both sides of the movable joint, the joint bends during use, which will cause the conduit between the fixing tape 33 and the adhesive tape 1 to stretch and retract. When stretched, the joint returns to its original position. The length of the conduit is greater than the distance between the fixing tape 33 and the adhesive tape after the joint returns to its original position, which causes the conduit to bend. With the setting of multiple fasteners 32, the conduit bending is affected by the fasteners 32 and will not bend at a certain point. Instead, it will bend in a large arc, avoiding local bending of the conduit.

[0039] The multi-point fixing design using the adhesive tape 1, the first adhesive tape 11, and the second adhesive tape 12 significantly improves overall stability and avoids the problem of easy loosening in traditional single-point fixing. The catheter fixing component 2 integrates the first half-ring 22, the second half-ring 23, and the limiting member 24 through the mounting plate 21 to form a triple locking structure, which can firmly clamp the catheter and prevent its axial displacement. Compared with traditional open buckles, it is safer and more reliable. The anti-bending fixing component 3 connects multiple buckles 32 through the connecting tape 31 to form a segmented support network when the catheter passes through the joint movement area. When the joint bends and the distance between the fixing patch 33 and the adhesive tape 1 changes, the buckles 32 work together to disperse the catheter deformation into a uniform large-arc bend, completely eliminating the risk of 90-degree right-angle bending common in traditional fixing methods. The end combination design of the support member 34 and the fixing patch 33 provides both the catheter outlet positioning and the end combination design of the fixing patch 33. The second layer forms the final anti-bend barrier, creating a double protection that echoes the front semi-ring structure. The overall design is modular, with the catheter fixation component 2 and the anti-bend fixation component 3 allowing for flexible adjustment of the spacing to accommodate different catheter diameters and meet catheter requirements. All contact surfaces are edged with medical-grade silicone, ensuring fixation while preventing pressure-induced skin damage, making it particularly suitable for long-term bedridden patients. The serpentine arrangement of the buckles 32 provides elastic deformation space in both the X and Y axes, ensuring unobstructed catheter movement in three-dimensional space. The telescopic connecting strap 31 of the anti-bend fixation component 3 can adjust its length autonomously with joint movement, avoiding catheter traction or wrinkling problems caused by traditional rigid fixation. The overall structure conforms to ergonomic curves, maintaining comfort even when attached to highly mobile areas such as the knee and elbow joints, significantly improving patient compliance.

[0040] The limiting component 24 consists of two conical rings 241. A semi-annular friction pad 242 is provided at the small end of the conical ring 241. The limiting component 24 adopts an innovative design of double conical rings 241 combined with semi-annular friction pads 242. Through the progressive locking principle of the conical surface, it ensures that the catheter becomes tighter and tighter when subjected to axial tension. At the same time, the medical-grade silicone material of the semi-annular friction pad 242 provides sufficient frictional resistance while avoiding damage to the catheter surface. Compared with the traditional planar limiting structure, the anti-slip performance is improved by more than 60%.

[0041] The fastening component 32 includes a U-shaped clamp 321, a connector 322, and a limiting soft block 323. The inner walls of both ends of the U-shaped clamp 321 are respectively provided with trapezoidal limiting soft blocks 323. The lower end of the U-shaped clamp 321 is connected to the connecting strap 31 through the connector 322. The trapezoidal limiting soft block 323 embedded in the U-shaped clamp 321 of the fastening component 32 forms a three-point contact fixation. The trapezoidal structure, which is wider at the top and narrower at the bottom, generates a self-locking effect when the catheter is subjected to force. Combined with the limiting soft block 323 made of medical-grade TPE material, it not only ensures the clamping stability but also prevents the catheter from detaching from the upper opening.

[0042] The lower end face of the fixing patch 33 is the adhesive surface. A U-shaped patch 331 is connected to the left side of the upper end face of the fixing patch 33, and a limiting patch 332 is connected to the right side of the upper end face of the fixing patch 33. The limiting patch 332 is positioned in the middle of the U-shaped patch 331. A support member 34 is disposed inside the U-shaped patch 331 and the limiting patch 332. The support member 34 includes a left half-ring 341 and a right half-ring 342, which are respectively fixed to the U-shaped patch 331 and the limiting patch 332. As the U-shaped patch 331 and the limiting patch 332 are applied alternately, the left half-ring 341 and the right half-ring 342 merge. When the left half-ring 341 and the right half-ring 342 merge, they form a ring shape, encasing the catheter inside. The fixing patch 33 adopts a three-layer composite structure design with a lower adhesive surface, an upper U-shaped patch 331, and a limiting patch 332. The acrylic adhesive layer provides superior adhesion to the skin contact surface, while the upper component remains adjustable. The staggered fitting design of the U-shaped patch 331 and the limiting patch 332 forms a mechanical interlocking structure, generating a 1.5mm pre-tightening displacement during fitting to ensure precise alignment of the left half-ring 341 and the right half-ring 342 when closed. The innovative split design of the support component 34 integrates the left half-ring 341 into the U-shaped patch 331 and the right half-ring 342 into the limiting patch 332. The catheter can be automatically secured by natural fitting action. The left half-ring 341 and the right half-ring 342 automatically restore their circular shape when merged, providing 360° support for the catheter. The opening orientation design of the U-shaped patch 331 and the T-shaped structure of the limiting patch 332 form an anti-misfit fitting mechanism to ensure that reverse fitting does not occur during clinical operation.

[0043] Guide rollers 4 are provided on the inner walls of the left half ring 341 and the right half ring 342. Supports for mounting guide rollers 4 are fixed on the inner walls of the left half ring 341 and the right half ring 342. The annular surface of the guide rollers 4 contacts the outer wall of the catheter. The guide rollers 4 are made of medical ceramic composite material with ultra-low friction coefficient, which reduces the sliding resistance of the catheter during joint movement and ensures that the catheter can freely extend and retract with the joint movement. The precisely arranged array of guide rollers 4 forms a dynamic guide rail system. The catheter always maintains a linear movement trajectory during the stretching and retraction process, avoiding the generation of non-axial stress.

[0044] Example 2: Refer to Figure 9 - Figure 10This is the second embodiment of the present invention. Unlike the first embodiment, this embodiment has a connecting rod 221 below both the first half-ring 22 and the second half-ring 23. The mounting plate 21 has a connecting block 211 for docking the connecting rod 221. The two ends of the connecting rod 221 are docked with the connecting block 211 through torsion springs. The outer walls of the first half-ring 22 and the second half-ring 23 are provided with a support frame 222. Pressing the support frame 222 is used to open and close the first half-ring 22 and the second half-ring 23. Through the combination of the preload of the torsion spring and the lever principle, when the support frame 222 is pressed, it is actually overcoming the torque of the torsion spring, causing the connecting rod 221 to rotate and drive the half-ring to open. When released, the torsion spring automatically resets, which ensures reliable fixation and does not damage the conduit. The support frame 222 is ergonomically designed and can be operated with one finger.

[0045] The specific initial closed state: The preload of the torsion spring keeps the connecting rod 221 in a vertical state, causing the first half-ring 22 and the second half-ring 23 to close, forming a complete conduit channel. The operator presses the opening frame 222 with one finger, pushing the connecting rod 221 to rotate around the axis of the torsion spring. The rotation of the connecting rod 221 is converted into a horizontal component force through the connecting block 211, driving the two half-rings to move outward synchronously, achieving an 80° opening. The conduit is inserted into the inner cavity of the half-ring from the opening. At this time, the conical ring 241 of the limiting member 24 is in an open state. After releasing the opening frame 222, the torque of the torsion spring pulls the connecting rod 221 back to its original position, causing the half-ring to close within 0.3 seconds. When closing, the silicone layer on the inner wall of the half-ring compresses the surface of the conduit, while the friction pad 242 of the conical ring 241 is radially locked, and the limiting soft block 323 provides axial anti-slip.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A medical catheter fixator to prevent folding, comprising a fitting band (1), characterized in that, The adhesive tape (1) is provided with a first adhesive tape (11) and a second adhesive tape (12), and a catheter fixing assembly (2) is fixed on the adhesive tape (1). The catheter fixing assembly (2) includes a mounting plate (21), a first half ring (22), a second half ring (23), and a limiting member (24). The first half ring (22) and the second half ring (23) are fixed on the mounting plate (21). The limiting member (24) is provided inside the first half ring (22) and the second half ring (23). One end of the fitting tape (1) extends to an anti-bending fixing assembly (3). The anti-folding fixing component (3) includes a connecting strap (31), a buckle (32), a fixing sticker (33), and a support member (34). The connecting strap (31) is provided with a plurality of buckles (32). One end of the connecting strap (31) is connected to the adhesive tape (1), and the other end is connected to the fixing sticker (33). The fixing sticker (33) is provided with a support member (34). One end of the conduit passes through the first half-ring (22) and the second half-ring (23) until it passes through the support member (34) to complete the installation. The conduit between the adhesive tape (1) and the fixing tape (33) is snapped in the snap member (32). The snap member (32) supports the conduit. When the conduit is stretched or retracted, several snap members (32) ensure that the curvature of the conduit will not be flattened when the conduit is bent. The limiting member (24) is composed of two conical rings (241), and a semi-circular friction pad (242) is provided at the small end of the conical ring (241). The fastener (32) includes a U-shaped clip (321), a connector (322) and a limiting soft block (323). The inner walls of both ends of the U-shaped clip (321) are respectively provided with trapezoidal limiting soft blocks (323). The lower end of the U-shaped clip (321) is connected to the connecting strip (31) through the connector (322). The support member (34) includes a left half ring (341) and a right half ring (342). A guide roller (4) is provided on the inner wall of the left half ring (341) and the right half ring (342). A bracket for installing the guide roller (4) is fixed on the inner wall of the left half ring (341) and the right half ring (342). The annular surface of the guide roller (4) contacts the outer wall of the conduit. When the left half ring (341) and the right half ring (342) are combined, they form a ring shape, covering the conduit inside.

2. The anti-bending medical catheter fixator according to claim 1, characterized in that, The lower end face of the fixing sticker (33) is the bonding surface. A U-shaped sticker (331) is connected to the left side of the upper end face of the fixing sticker (33), and a limiting sticker (332) is connected to the right side of the upper end face of the fixing sticker (33). The limiting sticker (332) is located in the middle of the U-shaped sticker (331).

3. The anti-bending medical catheter fixator according to claim 2, characterized in that, The support member (34) is disposed inside the U-shaped sticker (331) and the limiting sticker (332), and the left half ring (341) and the right half ring (342) are fixed on the U-shaped sticker (331) and the limiting sticker (332) respectively.

4. The anti-bending medical catheter fixator according to claim 3, characterized in that, While the U-shaped sticker (331) and the limiting sticker (332) are staggered together, the left half ring (341) and the right half ring (342) are driven to merge.

5. The anti-bending medical catheter fixator according to claim 1, characterized in that, A connecting rod (221) is provided below the first half ring (22) and the second half ring (23). A connecting block (211) for docking the connecting rod (221) is provided on the mounting plate (21). The two ends of the connecting rod (221) are docked with the connecting block (211) through torsion springs.

6. The anti-bending medical catheter fixator according to claim 5, characterized in that, The first half-ring (22) and the second half-ring (23) are provided with a support frame (222), which is used to open and close the first half-ring (22) and the second half-ring (23) while pressing the support frame (222).

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