Catheter fixing device

Abstract

The invention discloses a catheter fixing device, and relates to the technical field of medical instruments, the catheter fixing device comprises a fixing paste and a fixing buckle which are connected, the fixing buckle comprises a base and a cover body which are connected in a turnover manner, the end part of the cover body is provided with a clamping hook and a shifting block, the root part of the clamping hook is elastic, the shifting block is arranged on the outer side of the clamping hook, and the clamping hook is arranged on the base. The clamping hook and the shifting block are connected through an integrated elastic structure, the elastic structure is bent towards the cover face of the cover body, the hook portion of the clamping hook is bent inwards, the elastic structure extends out from the back face of the hook portion of the clamping hook, a clamping groove matched with the clamping hook is formed in the end of the base, and the elastic structure is arranged in the clamping groove. At least the end portion of the cover body is provided with a positioning column, at least the end portion of the base is provided with a positioning hole, and the positioning column is matched with the positioning hole in an inserted mode. According to the catheter fixing device, the clinical use risk is reduced, a catheter is easier, more convenient, safer and easier to replace, production is easy, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a catheter fixing device. Background Art

[0002] A urinary catheter fixing device is an auxiliary device used in a medical environment, especially very important for patients who need long-term or short-term urinary catheterization. Its main function is to ensure that the urinary catheter is firmly held in place, avoid discomfort or injury caused by the movement of the urinary catheter, and reduce the risk of infection. This device is crucial for improving the comfort and safety of patients. In the current domestic market, the locking structure design of common urinary catheter fixing devices usually has the hook facing outward. When it needs to be opened in the closed state, the dial block must be pressed inward forcefully so that the hook can disengage from the clamping groove to open the lid. However, due to the presence of a fixing column in the middle, this process often requires a relatively large force to cause sufficient deformation of the structure to disengage from the card slot, or cause deformation of the positioning column. This design is not only inconvenient to open and close, but also there is a risk of significant shaking of the catheter due to excessive force, which may cause secondary injury to the patient. Summary of the Invention

[0003] Technical Problems to be Solved by the Invention

[0004] The technical problem to be solved by the present invention is to provide a catheter fixing device, which reduces the clinical use risk, makes it more convenient, safe and easy to replace the urinary catheter, and is simple to produce and reduces the production cost.

[0005] Technical Solution

[0006] To solve the above problems, the technical solution provided by the present invention is as follows:

[0007] A catheter fixing device includes a fixing patch and a fixing buckle connected to each other. The fixing buckle includes a base and a lid body connected by folding. The end of the lid body is provided with a hook and a dial block. The root of the hook has elasticity. The dial block is arranged outside the hook. The hook and the dial block are connected by an integrated elastic structure. The elastic structure bends towards the lid surface of the lid body. The hook part of the hook bends inwards. The elastic structure extends from the back of the hook part of the hook. The end of the base is provided with a card slot cooperating with the hook. At least the end of the lid body is provided with a positioning column, and at least the end of the base is provided with a positioning hole. The positioning column and the positioning hole are inserted and matched.

[0008] The entire device consists of two major parts: a fixed patch and a fixed buckle, which are connected to form a whole. The fixed buckle is further subdivided into a base and a cover body that are foldably connected, facilitating the opening of the cover body without it falling off after being opened. The end of the cover body is provided with a hook and a dial block. The root of the hook is designed to be elastic, allowing the hook to swing left and right for flexible opening and closing. The dial block is arranged outside the hook, and the hook and the dial block are connected by an integrated elastic structure. This elastic structure bends towards the cover surface of the cover body, increasing the flexibility and convenience during operation. When the dial block is toggled, the elastic structure is subjected to the force of the dial block, forming an outward-turning acting force on the hook, and the hook turns outwards to disengage from the card slot. The hook part of the hook is designed to bend inwards to ensure stability in the closed state; while the elastic structure extends from the back of the hook part of the hook, further enhancing its elasticity and durability. The end of the base is provided with a card slot that cooperates with the hook to ensure the stability and safety of the device in the closed state.

[0009] Positioning mechanism:

[0010] At least a positioning post is provided at the end of the cover body, and a corresponding positioning hole is provided at the end of the base. The positioning post and the positioning hole are inserted and matched, which not only strengthens the stability in the closed state, but also simplifies the assembly process and reduces the production cost.

[0011] Optionally, the positioning post and the positioning hole are obliquely engaged. The positioning post is inclined outwards, and the inclination direction and angle of the positioning hole are adapted to the positioning post.

[0012] The positioning post and the positioning hole adopt the way of oblique engagement. This design not only increases the friction between structures, but also provides additional stability, helping to prevent the device from loosening due to accidental collision or pulling. The positioning post is set to be inclined outwards, that is, it extends obliquely outwards from the end of the cover body. Such a design enables the positioning post to enter the positioning hole more naturally when inserted, and due to the existence of the inclination angle, it has better installation stability when not opened, reduces the resistance and the risk of jamming when the dial block is turned up, and does not subject the positioning post to pressure, so it is easier to open, improving the success rate of flipping the cover and avoiding the risk of jamming and significant shaking of the catheter due to excessive force. The inclination direction and angle of the positioning hole are adapted to the positioning post. This means that the positioning hole also inclines inwards at a corresponding angle to ensure that the positioning post can be smoothly inserted and firmly held in place. This precisely matched design enhances the firmness of the overall structure while simplifying the operation process, enabling medical staff to quickly and accurately complete the installation and disassembly of the fixing device without adding too much complexity.

[0013] Optionally, the angle range of the positioning post with respect to the horizontal plane is 60° - 89°.

[0014] Enhanced fixing effect: By setting the positioning post within this angular range, the friction and stability when the positioning post is inserted into the positioning hole can be effectively increased. Compared with a vertical or nearly vertical design, this inclined arrangement can provide additional resistance to prevent the device from loosening due to accidental pulling or collision.

[0015] Easy to operate: The design within this angular range not only ensures sufficient guidance, making it easier for the positioning post to align and smoothly insert into the positioning hole, but also avoids the insertion difficulties that may be caused by an overly steep angle. Such a design helps medical staff complete the installation and disassembly process of the device more quickly and accurately.

[0016] Adapt to different application scenarios: Different clinical needs and patient conditions may require slightly adjusting the firmness of the fixing device. By setting a relatively wide angular range (60° - 89°), the angle of the positioning post can be flexibly adjusted according to specific situations to achieve the best use effect.

[0017] Optionally, the axis line of the positioning post is tangent to the arc of the cover body when it is folded.

[0018] The axis line of the positioning post is tangent to the arc at the folding position of the cover body, ensuring that the positioning post can accurately align with the positioning hole during installation. This design reduces the insertion difficulties or device instability caused by misalignment, improving the assembly success rate and stability.

[0019] By making the axis line of the positioning post tangent to the folding arc, the natural curvature of the cover body when it is folded can be maximally utilized to guide the positioning post to accurately enter the positioning hole. This not only enhances the overall structural stability of the fixing device but also reduces the potential risks caused by improper operation. More importantly, when the cover is flipped, the positioning post comes out along the arc of the cover body when it is folded, which can greatly reduce the resistance and the risk of jamming, without subjecting the positioning post to pressure, so it is easier to open.

[0020] Optionally, the outer side of the positioning post closely adheres to the outer wall of the positioning hole, and there is a gap between the inner side of the positioning post and the inner wall of the positioning hole.

[0021] By making the outer side of the positioning post in close contact with the outer wall of the positioning hole, the stability of the entire fixing device can be significantly improved. This helps prevent the positioning post from loosening or slipping out due to external forces, ensuring that the catheter remains stable during use. By leaving a certain gap between the inner side of the positioning post and the inner wall of the positioning hole, the frictional resistance during removal can be effectively reduced, making the operation smoother, and at the same time reducing the risk of significant catheter shaking caused by excessive force during forced removal, thereby reducing the probability of secondary injury to the patient.

[0022] Optionally, the radius of the arc along which the inner end of the positioning post is folded along the cover body is greater than the distance between the inner orifice of the positioning hole and the folding point.

[0023] This structural design means that when the cover body is flipped open, the inner end of the positioning post will move along a circular arc trajectory with a larger radius, and this trajectory exceeds the range that the inner orifice of the positioning hole can cover. Therefore, during the opening process, the positioning post can be disengaged from the constraint of the positioning hole earlier, avoiding jamming phenomena and significantly improving the smoothness of opening and closing and the ease of operation.

[0024] Optionally, the positioning post is elastic.

[0025] Enhanced adaptability: Since the positioning post is elastic, it can adapt to a certain degree of dimensional deviation or shape irregularities, ensuring good insertion and fixing effects even within manufacturing tolerances or when facing positioning holes of different specifications.

[0026] Improved operation convenience: When the positioning post is inserted into the positioning hole, its elastic characteristics make the insertion process smoother, reducing the resistance caused by hard contact. Similarly, when disassembly is required, the positioning post can be slightly deformed to reduce the frictional force during extraction, making the operation easier and faster.

[0027] Increased safety and comfort: The elastic positioning post can buffer external impact forces to a certain extent, avoiding device damage or discomfort to the patient caused by sudden external forces. In addition, it can reduce the shaking of the catheter caused by excessive force, thereby reducing the risk of secondary injury to the patient.

[0028] Optimized structural stability: Although the positioning post is elastic, after correct installation, its tight fit with the positioning hole can still provide sufficient support force to ensure the stability of the entire fixing device. Especially in combination with the aforementioned designs of "the outer side of the positioning post closely adheres to the outer wall of the positioning hole" and "there is a gap between the inner side of the positioning post and the inner wall of the positioning hole", a stable and flexible fixing effect can be achieved.

[0029] Optionally, a chamfer structure is provided at the end of the positioning post.

[0030] Improve insertion smoothness: The chamfer structure can play a guiding role, making it easier for the positioning post to align and smoothly enter the positioning hole. This design reduces the operation difficulty caused by difficult precise positioning, especially in cases with poor visibility or limited operation space, greatly improving the assembly efficiency.

[0031] Reduce the risk of wear and damage: The chamfered edge is smoother than the right-angled edge, which can effectively avoid scratching or wearing the inner wall of the positioning hole during insertion. In addition, it can also reduce the possibility of damage to the positioning post itself due to hard contact, extending the service life of the entire fixing device.

[0032] Enhance safety and comfort: By reducing the friction and resistance during insertion, the chamfered structure not only makes the operation easier but also reduces the extra force required for forced insertion, thus reducing the risk of catheter shaking caused by improper force and protecting the patient from secondary injuries.

[0033] Optionally, the orifice of the positioning hole is provided with a rounded corner structure.

[0034] Improve the smoothness of insertion: The rounded corner structure can play a guiding role, making it easier for the positioning post to align and smoothly enter the positioning hole. Especially in the case of limited visibility or narrow operating space, the rounded corner design greatly reduces the difficulty of precise alignment, improving the assembly efficiency and success rate.

[0035] Reduce the risk of wear and damage: Compared with the sharp orifice edge, the rounded corner edge is smoother, which can effectively avoid scratching or wearing the surface of the positioning post during insertion. At the same time, this design also reduces the possibility of damage to the positioning hole itself due to hard contact, helping to extend the service life of the entire fixing device.

[0036] Optionally, the base and the cover body are of an integral structure.

[0037] Compared with the split design, the one-piece molding reduces the number of components and assembly steps, thus simplifying the production process, reducing the manufacturing cost, and improving the production efficiency.

[0038] Beneficial effects

[0039] Adopting the technical solution provided by the present invention, compared with the prior art, it has the following beneficial effects:

[0040] The technical solution provided by the present invention solves the problem of catheter shaking caused by excessive force in the prior art through the structural design of the hook, reducing the risk of secondary injury to the patient. In addition, its simple operation method, stable fixing effect, and simplified production process make it more advantageous in clinical applications. Brief description of the drawings

[0041] Figure 1 It is a schematic structural diagram of a catheter fixing device proposed by an embodiment of the present invention;

[0042] Figure 2 It is a cross-sectional view of a catheter fixing device proposed by an embodiment of the present invention;

[0043] Figure 3 A partial cross-section of a catheter fixing device proposed for an embodiment of the present invention Figure 1 ;

[0044] Figure 4 A partial cross-section of a catheter fixing device proposed for an embodiment of the present invention Figure 2 ;

[0045] 1. Fixing buckle; 11. Base; 12. Cover body; 13. Pushing block; 14. Hook; 15. Slot; 16. Positioning post; 17. Positioning hole; 2. Chassis; 3. Fixing sticker. Detailed implementation manners

[0046] To further understand the content of the present invention, the present invention will be described in detail with reference to the accompanying drawings and embodiments.

[0047] Embodiment 1

[0048] Combined with the attached Figure 1 , 2 , a catheter fixing device includes a fixing sticker 3 and a fixing buckle 1 which are connected to each other. The fixing sticker 3 and the fixing buckle 1 are connected through a chassis 2. Generally, the material of the fixing sticker 3 is non-woven fabric, and the adhesive layer on the non-woven fabric is arranged in dots, which can effectively reduce the incidence of skin allergy and ulceration. The size of the fixing sticker 3 needs to be determined according to specific usage requirements. Generally, the area of the fixing sticker 3 is larger than the area of the fixing buckle 1, so as to effectively ensure the fixing effect and strength. The chassis 2 and the fixing sticker 3 are fixed by UV glue or other medical-grade glues. After the buckle on the chassis 2 and the hole on the base 11 of the fixing buckle 1 are assembled, the fixing buckle 1 and the chassis 2 are integrated and do not fall off.

[0049] The fixing buckle 1 includes a base 11 and a cover body 12 which are connected by folding. The base 11 and the cover body 12 are of an integral structure. Both the base 11 and the cover body 12 are strip-shaped, and there is a groove for passing the catheter between them. One end is the folding point, and the base 11 and the cover body 12 are integrally connected together. The other end is a hook 14 and a slot 15 structure, which are buckled and connected, and can be opened when the cover needs to be flipped.

[0050] Combined with the attached Figure 2 , the end of the cover body 12 is provided with a hook 14 and a pushing block 13. The root of the hook 14 has elasticity, and the hook part of the hook 14 is arc-bent to provide a moderate clamping force.

[0051] The shift block 13 is arranged outside the hook 14, and the shift block 13 is in the shape of a rectangular parallelepiped. The hook 14 and the shift block 13 are connected by an integrated elastic structure, which is a long strip of plastic material with certain strength and elasticity, which saves effort when shifting the shift block 13 and is not easy to fail when the hook 14 is engaged. The elastic structure is bent toward the cover surface of the cover body 12, and the hook portion of the hook 14 is bent inward. The elastic structure extends from the back of the hook portion of the hook 14, and is combined with the attached Figure 2 When the finger moves the shift block 13, the shift block 13 moves upward, the left end of the elastic structure moves upward, and the right end of the elastic structure cannot move in the vertical direction because it is connected to the hook of the hook 14. When the shift block 13 moves to a certain extent, the right end of the elastic structure applies force to the left due to its own elasticity, and the hook 14 naturally escapes from the slot 15. The force applied to the shift block 13 is obliquely to the upper right, which is consistent with the direction of the flip cover, so the cover can be flipped easily.

[0052] The end of the base 11 is provided with a slot 15 that cooperates with the hook 14, at least the end of the cover 12 is provided with a positioning column 16, at least the end of the base 11 is provided with a positioning hole 17, and the positioning column 16 and the positioning hole 17 are plugged and matched. Figure 1 A positioning column 16 and a positioning hole 17 structure are provided at both ends of the cover 12 and the base 11, and a positioning column 16 and a positioning hole 17 structure is also provided at the groove for passing the catheter. A positioning column 16 and a positioning hole 17 structure is provided at the folding point, and two positioning columns 16 and positioning holes 17 structures are provided at the end of the hook 14 and the slot 15.

[0053] Combined with Figure 3 , the positioning column 16 and the positioning hole 17 are obliquely engaged, the positioning column 16 is inclined outward, and the inclination direction and angle of the positioning hole 17 are adapted to the positioning column 16. Stronger guidance: Since the positioning column 16 is inclined outward, during the closing process of the cover body 12, the front end of the positioning column 16 can be naturally aligned with the opening of the positioning hole 17, avoiding the insertion difficulty caused by the front misalignment, and improving the assembly efficiency. Enhanced locking effect: The oblique design makes the positioning column 16 generate a component force in the inclination direction when it is subjected to external tension after being inserted into the positioning hole 17, thereby increasing the resistance to disengagement, improving the locking performance of the overall structure, and preventing accidental loosening. Strong fault tolerance: The structural design allows a certain degree of manufacturing error or assembly deviation, and can still ensure a good engagement state, which is conducive to improving the product yield and clinical use stability. Easy to operate and high safety: When opening the device, medical staff only need to apply moderate force in the opposite direction of the inclination to easily unlock it, without the need for additional tools or excessive force, reducing the risk of secondary injury to the patient caused by the shaking of the catheter due to improper force.

[0054] More preferably, the angle between the positioning column 16 and the horizontal plane is α, ranging from 60° to 89°. In this embodiment, α can be 60°, 86° or 89°.

[0055] Preferably, the axis line of the positioning post 16 is tangent to the arc along which the cover 12 is folded. By making the axis line of the positioning post 16 tangent to the folding arc, the natural curvature of the folded cover 12 can be maximally utilized to guide the positioning post 16 to accurately enter and exit the positioning hole 17, reducing the resistance.

[0056] The positioning post 16 is elastic and can be an integral structure with the cover 12. It is made of a plastic material, having both a certain structural strength and elasticity.

[0057] The end of the positioning post 16 is provided with a chamfer structure with an angle of 45°.

[0058] The orifice of the positioning hole 17 is provided with a rounded corner structure.

[0059] Working principle:

[0060] When the cover 12 is closed, the opening of the hook 14 faces inward to hook the card slot 15. When opened, the acting force is on the dial 13, causing the hook 14 to deform outward and disengage from the card slot 15. At this time, the positioning post 16 is not under pressure, so it is relatively easy to open. When the cover 12 is closed, the inclined positioning post 16 and the side surface of the positioning hole 17 have a vertical engaging and disengaging force, making the cover 12 not easily fall off upward. When opening, the positioning post 16 moves along the arc of the flip cover, reducing the resistance of side wall friction or interference compared with the vertically arranged positioning post 16 and positioning hole 17.

[0061] Embodiment 2

[0062] Combined with the attached Figure 4 , compared with the technical solution of Embodiment 1, a catheter fixing device of this embodiment can be improved as follows:

[0063] The outer side of the positioning post 16 is closely attached to the outer side wall of the positioning hole 17, and there is a gap between the inner side of the positioning post 16 and the inner side wall of the positioning hole 17: This structural design makes the positioning post 16 form a stable support in the outer direction after being inserted into the positioning hole 17, enhancing the stability of the overall connection; while leaving a gap inside helps to reduce the friction resistance during the insertion and extraction process, making the operation smoother and reducing the shaking of the catheter caused by forced extraction, thereby reducing the risk of secondary injury to the patient.

[0064] The positioning post 16 and the positioning hole 17 can be arranged obliquely or vertically: As Figure 4 shown, in addition to the above-mentioned inclined arrangement method, the positioning post 16 and the positioning hole 17 can also be arranged vertically. This variation form can be selected according to actual usage requirements. For example, in scenarios with less space limitation or lower requirements for locking force, the vertical arrangement can simplify the structure and improve the assembly efficiency, while still ensuring the basic fixing effect.

[0065] The radius of the inner end of the positioning post 16 along the folding arc of the cover 12 is greater than the distance between the inner orifice of the positioning hole 17 and the folding point: This structural feature ensures that when the cover 12 is turned and opened, the inner end of the positioning post 16 will move along a trajectory with a larger radius and disengage from contact earlier than the constraint range of the positioning hole 17, thereby avoiding jamming and improving the smoothness of opening and closing and the operational convenience.

[0066] The above has schematically described the present invention and its implementation manners. This description is not restrictive, and only one of the implementation manners of the present invention is shown in the drawings. The actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design, without creative efforts, structural manners and embodiments similar to the technical solution without departing from the gist of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A catheter fixation device, characterized in that, It includes a connected fixed patch and a fixed buckle. The fixed buckle includes a base and a cover body connected by folding. The end of the cover body is provided with a hook and a dial block. The root of the hook has elasticity. The dial block is arranged outside the hook. The hook and the dial block are connected by an integrated elastic structure. The elastic structure bends towards the cover surface of the cover body. The hook part of the hook bends inwards. The elastic structure extends from the back of the hook part of the hook. The end of the base is provided with a card slot matching the hook. At least the end of the cover body is provided with a positioning post, and at least the end of the base is provided with a positioning hole. The positioning post and the positioning hole are inserted and matched.

2. The catheter fixing device according to claim 1, characterized in that, The positioning post and the positioning hole are obliquely engaged. The positioning post inclines outwards. The inclination direction and angle of the positioning hole are adapted to the positioning post.

3. The catheter fixing device according to claim 2, wherein The angle range between the positioning post and the horizontal plane is 60° - 89°.

4. The catheter fixing device according to claim 3, wherein, The axis line of the positioning post is tangent to the arc of the cover body folding.

5. The catheter fixing device according to claim 1, characterized in that, The outside of the positioning post is closely attached to the outer side wall of the positioning hole, and there is a gap between the inner side of the positioning post and the inner side wall of the positioning hole.

6. The catheter fixing device according to claim 5, wherein The radius of the arc along which the inner end of the positioning post folds the cover body is greater than the distance between the inner hole opening of the positioning hole and the folding point.

7. A catheter fixing device according to claim 2 or 5, characterized in that, The positioning post has elasticity.

8. A catheter fixing device according to claim 2 or 5, characterized in that, The end of the positioning post is provided with a chamfer structure.

9. A catheter fixation device according to claim 2 or 5, characterized in that, The hole opening of the positioning hole is provided with a rounded corner structure.

10. A catheter fixing device according to claim 1, characterized in that, The base and the cover body are of an integral structure.

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