A body surface catheter securement device

Abstract

This application discloses a surface catheter fixation device to solve the problems of poor air permeability and unstable fixation effect in existing surface catheter fixation devices. This application includes a base layer and a positioning layer, with several air vents in the base layer. A fixation component is disposed between the base layer and the positioning layer. The fixation component includes a fixing member with a through channel along the width of the base layer for fixing the infusion tube. An anti-slip layer is provided on the inner wall of the through channel. This application has a simple overall structure and is easy to use. The base layer is adhered to the skin, and the infusion tube is fixed in the receiving through hole between the base layer and the positioning layer by the fixation component, avoiding direct contact between the infusion tube and the skin, ensuring a more stable catheter connection, and improving the safety of infusion tube use. The air vents improve the air permeability of the surface catheter fixation device, and the anti-slip layer improves the stability of catheter fixation, further reducing the patient's risk of infection.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a surface catheter fixation device. Background Technology

[0002] Central venous catheters (CVCs) and indwelling intravenous catheters are two commonly used infusion lines for administering medications, nutritional solutions, and other therapeutic solutions. CVCs are typically inserted into large veins, such as the internal jugular or subclavian veins, and are suitable for long-term treatments or those requiring high concentrations of medication. Indwelling intravenous catheters, on the other hand, are usually placed in peripheral veins, such as in the arm or foot, and are suitable for short-term or emergency treatments.

[0003] In existing technologies, the external portion of central venous catheters and indwelling intravenous needles needs to be secured to the body. Clinical nurses typically use medical adhesive tape to fix the catheter to the patient's skin. However, due to the rigidity and volume of the catheter, gaps usually form between the catheter and the skin. Over time, these gaps may gradually widen due to the movement or swaying of the catheter, reducing the restraining force of the medical adhesive tape. When the restraining force weakens, external forces can easily cause the catheter to shift outside the body. This shift can further lead to positional changes in the catheter connected to the body, especially when using multi-channel central venous catheters and Y-shaped indwelling intravenous needles. Due to their multiple channels and complex structure, the gaps between the skin and the medical adhesive tape are larger, making them more susceptible to displacement due to external influences. This increases the risk of infection for the patient and affects the stability and safety of treatment outcomes.

[0004] To address the aforementioned issues, patent document CN106943660A discloses a venous catheter fixation device and a venous indwelling device. This venous catheter fixation device can separate the human body from the external part of the central venous catheter through the fitting component, avoiding pressure injury to the human body. The catheter connector is accommodated through the receiving cavity, which also achieves a fixation effect. The entire device fixes the central venous catheter. While the intravenous catheter fixation device in this patent has certain advantages in terms of fixation effect, breathability, and ease of operation, it still has some shortcomings, such as: First, the multiple components are scattered on the patch, resulting in a complex overall structure of the device, increasing the difficulty and time required for operation. This also leads to a large surface area of ​​the patch and a large contact area with the skin, which may cause local skin dampness, poor breathability, and an increased risk of skin allergies and infections, especially with prolonged use. Second, although the catheter is fixed using fixation components and adhesive tape, the catheter may slide or shift within the fixation device during patient movement, leading to poor infusion and increasing patient discomfort and infection risk. Third, because multiple components of the device are fixed to the patch, and the patch needs to fit tightly against the skin, this may restrict the patient's freedom of movement. Utility Model Content

[0005] Therefore, this application provides a surface catheter fixation device to solve the problems of poor air permeability and unstable fixation effect of existing surface catheter fixation devices.

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

[0007] A surface catheter fixation device includes: a base layer that is adhered to human skin and a positioning layer that is detachably connected to the base layer, wherein the base layer has a plurality of ventilation holes.

[0008] The upper surface of the base layer is provided with a fixing component corresponding to the position between it and the positioning layer. The fixing component includes a fixing member connected to the base layer. The fixing member is provided with a through channel along the width direction of the base layer. The through channel is used to fix the catheter of the infusion tube, and the inner wall of the through channel is provided with an anti-slip layer to prevent the catheter from sliding or shifting.

[0009] Optionally, the anti-slip layer has an anti-slip textured structure, including several longitudinal stripes and several transverse stripes, which are respectively disposed on the inner wall of the through channel.

[0010] Optionally, the anti-slip layer is made of rubber.

[0011] Optionally, the fastener is provided with two clearance grooves communicating with the through channel along the length of the base layer, for accommodating the two fixing wings of the cross buckle of the dual-pipe infusion tube.

[0012] Optionally, the fixing component further includes a through hole formed in the positioning layer and used to mate with the through channel, the through hole being used for the Y-shaped tube of the infusion connector to pass through.

[0013] Optionally, the base layer has multiple adhesive layers spaced along its length on the side away from the positioning layer for adhesion to the human body, and multiple release papers corresponding to the multiple adhesive layers are respectively provided on the side away from the base layer.

[0014] Optionally, adjustable fixing straps are provided at both ends of the base layer, and the adjustable fixing straps are Velcro or elastic bands.

[0015] Optionally, one end of the positioning layer is fixedly connected to one end of the base layer, and the other end of the positioning layer is bonded to the other end of the base layer.

[0016] Optionally, the base layer has multiple interconnected micro airbags distributed along its length, and an air inlet connected to one of the airbags is provided on one side of the base layer.

[0017] Optionally, the base layer is made of nonwoven fabric, and the fastener is made of PVC, polypropylene, latex, or rubber.

[0018] Compared with the prior art, this application has at least the following beneficial effects:

[0019] 1. Based on further analysis and research of existing technical problems, this application provides a surface catheter fixation device with a simple overall structure and convenient use. The base layer is adhered to the human skin, and the infusion tube is fixed in the receiving through hole between the base layer and the positioning layer by a fixing component. This avoids direct contact between the infusion tube and the skin, ensuring a more stable catheter connection and improving the safety of infusion tube use. At the same time, several vent holes on the base layer improve the breathability of the surface catheter fixation device, and the anti-slip layer helps prevent the catheter from sliding or shifting, improving the stability of catheter fixation and further reducing patient discomfort and infection risk. The positioning layer ensures that the catheter is accurately positioned and stably fixed on the base layer, further preventing the catheter from shifting or sliding during use, thus improving the overall performance and effectiveness of the device.

[0020] 2. The base layer of this application can be provided with multiple adhesive layers along its length, which reduces the direct contact area between the base layer and the skin, further improving breathability and comfort; in addition, the fixation of the base layer is more flexible, making it convenient for medical staff to quickly adjust the position of the base layer as needed.

[0021] 3. The two ends of the base layer of this application are also provided with adjustable fixing straps. When in use, the base layer is rolled into a wearable wristband or armband by the adjustable fixing straps. It is especially suitable for indwelling venous needles inserted into the veins of the back of the hand and the forearm. It is convenient to wear and also facilitates the patient's movement.

[0022] 4. The base layer of this application also has multiple micro airbags distributed along its length. The base layer is rolled up to fix the forearm or leg in a circumferential manner, and the inflation volume of the micro airbags can be adjusted to accommodate patients of different dimensions. At the same time, there are certain gaps between adjacent airbags, which form ventilation channels and further enhance the ventilation of the base layer. Attached Figure Description

[0023] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0024] Figure 1This is a schematic diagram of the structure of the surface catheter fixation device provided in Embodiment 1 of this application;

[0025] Figure 2 for Figure 1 A schematic diagram showing the bonding of the mid-positioning layer and the base layer;

[0026] Figure 3 for Figure 1 Schematic diagram of the middle fixing component;

[0027] Figure 4 A schematic diagram illustrating the use of the surface catheter fixation device and the indwelling intravenous needle provided in Embodiment 1 of this application;

[0028] Figure 5 for Figure 4 A schematic diagram showing the bonding of the mid-positioning layer and the base layer;

[0029] Figure 6 A schematic diagram illustrating the use of the surface catheter fixation device provided in Embodiment 1 of this application in conjunction with a central venous catheter;

[0030] Figure 7 for Figure 6 A schematic diagram showing the bonding of the mid-positioning layer and the base layer;

[0031] Figure 8 for Figure 1 A schematic diagram of the bottom with the release liner;

[0032] Figure 9 for Figure 1 A cross-sectional view with a release liner;

[0033] Figure 10 This is a schematic diagram of the structure of the surface catheter fixation device provided in Embodiment 2 of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Base layer; 101. Ventilation hole; 2. Positioning layer; 3. Fixing component; 31. Fixing element; 311. Through channel; 312. Relief groove; 32. Through hole; 4. Cross buckle; 41. Fixing wing; 5. Y-shaped tube; 6. Anti-slip layer; 7. Release paper; 71. First release paper; 72. Second release paper; 73. Third release paper; 8. Adjustable fixing strap. Detailed Implementation

[0036] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "comprising," "including," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0038] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to indicate the general relative positional relationship for the purpose of intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product.

[0039] Example 1

[0040] like Figures 1-3 As shown, a surface catheter fixation device includes: a base layer 1 that is adhered to human skin and a positioning layer 2 that is detachably connected to the base layer 1. The base layer 1 has a plurality of ventilation holes 101, which helps to improve the breathability of the skin.

[0041] A fixing component 3 is provided on the upper surface of the base layer 1 at the position between it and the positioning layer 2. The fixing component 3 includes a fixing member 31 connected to the base layer 1. The fixing member 31 is provided with a through channel 311 along the width direction of the base layer 1. The through channel 311 is used to fix the infusion tube, and the inner wall of the through channel 311 is provided with an anti-slip layer 6 to prevent the tube from sliding or shifting.

[0042] In this embodiment, the base layer 1 is adhered to the human skin, and the infusion tube is fixed in the receiving through hole between the base layer 1 and the positioning layer 2 by the fixing component 3. This avoids direct contact between the infusion tube and the skin, so the base layer 1 can completely fit the human skin, eliminating the gaps caused by the catheter in traditional fixing methods. Since there are no gaps, the possibility of the catheter gaps widening under external forces in the prior art is reduced, ensuring a more stable catheter connection and improving the safety of infusion tube use. At the same time, several vent holes 101 are provided on the base layer 1, which helps to improve the breathability of the skin, avoid local skin dampness, and reduce the risk of skin allergies and infections. The anti-slip layer 6 helps to prevent the catheter from sliding or shifting, improves the stability of catheter fixation, and further reduces patient discomfort and infection risk. The positioning layer 2 ensures that the catheter is accurately positioned and stably fixed on the base layer 1, preventing the catheter from shifting or sliding during use, thereby improving the overall performance and effectiveness of the device.

[0043] Preferably, the anti-slip layer 6 has an anti-slip textured structure, including several longitudinal stripes and several transverse stripes, respectively disposed on the inner wall of the through channel 311; it can also be a raised dot or spiral textured structure. By enhancing the friction between the catheter wings and the inner wall of the fixed channel, catheter loosening that may occur during patient movement is prevented.

[0044] More preferably, the anti-slip layer 6 is made of rubber.

[0045] Preferably, such as Figure 6 , Figure 7 As shown, the fastener 31 has two clearance grooves 312 that communicate with the through channel 311 along the length of the base layer 1, which are used to accommodate the two fixing wings 41 of the cross buckle 4 of the double-pipe infusion tube.

[0046] The through-channel 311 allows the infusion tubing to be stably placed along the through-direction (double tubing can be placed together). For central venous catheters, their fixing wings 41 are typically connected to a cross buckle 4, which includes two fixing wings 41. These fixing wings 41 can be respectively embedded in two corresponding relief grooves 312 on the fixing member 31. In this way, the central venous catheter is securely fixed, preventing movement along the through-direction of the receiving through-hole and restricting the rotation of the central venous catheter.

[0047] Preferably, such as Figure 4 , Figure 5 As shown, the fixing component 3 also includes a through hole 32 formed in the positioning layer 2 and used to cooperate with the through channel 311. The through hole 32 is used for the Y-shaped tube 5 of the infusion connector to pass through.

[0048] For a Y-shaped intravenous catheter, the Y-shaped connector can extend through the through hole 32 on the positioning layer 2. This design allows the through hole 32 to match the through channel 311. The main channel of the intravenous catheter is arranged along the through channel 311, and the Y-shaped connector can extend from the through hole 32 of the positioning layer 2. The positioning layer 2 restricts the movement and rotation of the intravenous catheter.

[0049] Preferably, such as Figure 8 , Figure 9 As shown, an adhesive layer for sticking to the human body is provided on the base layer 1 on the side away from the positioning layer 2, and a release paper 7 is provided on the side of the adhesive layer away from the base layer 1; specifically, a first adhesive layer and a second adhesive layer can be provided at both ends of the base layer on the side away from the positioning layer, and a first release paper 71 and a second release paper 72 are provided on the side of the first adhesive layer and the second adhesive layer away from the base layer 1, respectively. The function of the release paper is to protect the adhesive layer from contamination before use and to make it easy to remove during use to expose the adhesive layer for sticking.

[0050] More preferably, the adhesive layer can be a medical pressure-sensitive adhesive coated on the base layer 1.

[0051] In another preferred embodiment, a third adhesive layer and a corresponding third release paper 73 are further provided in the middle part of the base layer 1.

[0052] The first, second, and third adhesive layers significantly reduce the direct contact area between the base layer 1 and the skin, lowering the risk of skin allergies and damage, enhancing breathability, and improving comfort. In addition, multiple adhesive layers and corresponding release paper 7 can be spaced along the length of the base layer 1, making the fixation of the base layer 1 more flexible. Medical staff can quickly adjust the position of the base layer 1 as needed without having to re-adhere the entire base layer 1.

[0053] Preferably, one end of the positioning layer 2 is fixedly connected to one end of the base layer 1, and the other end of the positioning layer 2 is bonded to the other end of the base layer 1, which can be done using Velcro.

[0054] Preferably, the base layer 1 is made of non-woven fabric, and the fastener 31 is made of PVC, polypropylene, latex or rubber.

[0055] Example 2

[0056] Example 3 is basically similar to Example 1, the main difference being that: adjustable fixing straps 8 are also provided at both ends of the base layer 1, and the adjustable fixing straps 8 are made of Velcro or elastic straps, such as... Figure 10 As shown.

[0057] When in use, the base layer 1 is rolled into a wearable wristband or armband using the adjustable fixing strap 8. This design is especially suitable for indwelling venous catheters inserted into the veins of the back of the hand and the veins of the forearm. These areas are highly mobile, and the wearable structure can provide better fixation and protection, while reducing discomfort for the patient during activity. It is also convenient to wear and facilitates patient movement.

[0058] Example 3

[0059] Example 3 is basically similar to Example 2, with the main difference being that: multiple micro airbags are distributed along the length of the interior of the base layer 1, and interconnected air ducts are provided between the multiple micro airbags. An air inlet connected to one of the airbags is provided on one side of the base layer 1. The arrangement of these micro airbags avoids the position of the vent hole 101 on the base layer 1 to ensure that the inflation and deflation of the airbags will not interfere with the function of the vent hole 101, and will not block the vent hole 101 due to the expansion of the airbags. This ensures that the device can maintain good air permeability while providing dynamic adjustment function.

[0060] During use, the miniature air pump and air valve inflate the miniature airbags through the air inlet. After inflation, the airbags expand, allowing for a wraparound fixation of the forearm or leg. The inflation volume can be adjusted to accommodate patients of different dimensions. At the same time, since multiple miniature airbags are spaced apart inside the base layer 1, there are certain gaps between adjacent airbags. These gaps naturally form air permeability channels, further enhancing the air permeability of the base layer 1.

[0061] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A device for fixing a superficial catheter, characterized in that, include: A base layer that is adhered to human skin and a positioning layer that is detachably connected to the base layer, wherein the base layer has several breathable holes; The upper surface of the base layer is provided with a fixing component corresponding to the position between it and the positioning layer. The fixing component includes a fixing member connected to the base layer. The fixing member is provided with a through channel along the width direction of the base layer. The through channel is used to fix the catheter of the infusion tube, and the inner wall of the through channel is provided with an anti-slip layer to prevent the catheter from sliding or shifting.

2. The body surface catheter fixation device according to claim 1, characterized in that, The anti-slip layer has an anti-slip textured structure, including several longitudinal stripes and several transverse stripes, which are respectively set on the inner wall of the through channel.

3. The body surface catheter fixation device according to claim 1 or 2, characterized in that, The anti-slip layer is made of rubber.

4. The body surface catheter fixation device according to claim 1, characterized in that, The fastener has two clearance grooves along the length of the base layer that communicate with the through channel, for accommodating the two fixing wings of the cross buckle of the dual-pipe infusion tube.

5. The body surface catheter fixation device according to claim 1, characterized in that, The fixing component also includes a through hole formed in the positioning layer and used to cooperate with the through channel, the through hole being used for the Y-shaped tube of the infusion connector to pass through.

6. The body surface catheter fixation device according to claim 1, characterized in that, The base layer has multiple adhesive layers spaced along its length on the side away from the positioning layer for adhesion to the human body, and multiple release papers corresponding to each adhesive layer are provided on the side away from the base layer.

7. The body surface catheter fixation device according to claim 1 or 6, characterized in that, The base layer is provided with adjustable fixing straps at both ends, and the adjustable fixing straps are made of Velcro or elastic straps.

8. The body surface catheter fixation device according to claim 1, characterized in that, One end of the positioning layer is fixedly connected to one end of the base layer, and the other end of the positioning layer is bonded to the other end of the base layer.

9. The body surface catheter fixation device according to claim 1, characterized in that, The base layer has multiple interconnected micro air bladders distributed along its length, and an air inlet connected to one of the air bladders is provided on one side of the base layer.

10. The body surface catheter fixation device according to claim 1, characterized in that, The base layer is made of non-woven fabric, and the fastener is made of PVC, polypropylene, latex, or rubber.

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