Anti-dislodgement device for intravenous therapy

Abstract

A device for preventing intravenous catheter dislodgement in intravenous therapy includes a housing with medical tape on both sides of the bottom for skin adhesion and a detachable end cap at the top; a cylinder fixed to the middle of the inner side of the housing, with an inner annular airbag sleeved on the outer side of the cylinder, the inner annular airbag being configured to deform upwards under pressure; a lifting plate sleeved on the cylinder, the lifting plate being movable up and down along the cylinder, with a lower silicone layer fixed on its top surface; a circular airbag located at the bottom of the housing, the circular airbag communicating with the inner annular airbag; and a straight channel penetrating the lifting plate and the cylinder, one end of the straight channel having an entry hole communicating with the housing. This utility model has a novel structure and ingenious design, combining mechanical clamping with medical tape, achieving a tensile strength ≥30N, which is a certain improvement over traditional tape fixation. The trapezoidal cross-section airbag design enables dynamic pressure transmission, ensuring continuous and stable clamping.

Description

Technical Field

[0001] This utility model relates to nursing devices, specifically an anti-dislodgement nursing device for intravenous therapy. Background Technology

[0002] Intravenous therapy plays a vital role in clinical medicine, serving as a widely used method in the treatment of various diseases. From routine infusions to complex drug administration, from nutritional support to specialized treatments such as hemodialysis, the use of intravenous catheters is ubiquitous. However, behind this seemingly routine procedure, catheter fixation remains a persistent challenge for both healthcare professionals and patients.

[0003] Currently, the most common method for catheter fixation in clinical practice is to directly attach the catheter to the skin using medical tape. This traditional method has several drawbacks. First, the fixation effect of medical tape is easily affected by various factors. Sweat and oil secretion on the skin surface significantly reduce the adhesiveness of the tape, weakening its fixing force. During unintentional patient movements, the catheter can easily shift or even fall off. Statistics show that in the hot and sweaty summer, the catheter displacement rate due to tape adhesion problems is about 30% higher than in other seasons. Second, patients' activities are complex and varied. Everyday actions such as turning over, raising an arm, or getting out of bed all exert a pulling effect on the catheter. Ordinary medical tape cannot adaptively adjust to the patient's activity level and cannot provide sufficient resistance to pulling. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a nursing device for preventing tube dislodgement in intravenous therapy, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model includes...

[0006] The box has medical tape for attaching to the skin on both sides and bottom, and a detachable end cap at the top.

[0007] A cylinder is fixed to the middle of the inner side of the box, and an inner annular airbag is sleeved on the outer side of the cylinder. The inner annular airbag is configured to deform upward when subjected to pressure.

[0008] A lifting plate is sleeved on the cylinder, and the lifting plate can move up and down along the cylinder, with a lower silicone layer fixed on its top surface;

[0009] A circular airbag is located at the bottom of the box, and the circular airbag is connected to the inner annular airbag.

[0010] A straight channel runs through the lifting plate and the cylinder. One end of the straight channel is provided with an entry hole that communicates with the box body, and the other end is connected to a storage slot opened on the lower silicone layer through an arc-shaped channel.

[0011] An upper silicone layer is disposed inside the lower silicone layer, and the upper silicone layer and the lower silicone layer form an elastic clamping structure.

[0012] Preferably, the radial cross-section of the inner annular airbag is trapezoidal, and the top width of the inner annular airbag is smaller than the bottom width.

[0013] Preferably, the axis of the straight channel coincides with the axis of the cylinder, and the radius of curvature of the arc-shaped channel is greater than the diameter of the conduit.

[0014] Preferably, the storage groove is a semi-circular groove, and the opening direction of the storage groove is perpendicular to the clamping surface of the upper silicone layer.

[0015] Preferably, the inner wall of the straight channel is provided with anti-slip texture, and the outlet end of the arc-shaped channel is inclined toward the storage groove.

[0016] Preferably, a tapered clamping space is formed between the upper silicone layer and the lower silicone layer, and the minimum gap is smaller than the outer diameter of the conduit.

[0017] Beneficial effects: The combination of mechanical clamping (silicone layer) and medical tape provides tensile strength ≥30N, which is a certain improvement over traditional tape fixation. The trapezoidal cross-section airbag design enables dynamic pressure transmission, ensuring continuous and stable clamping.

[0018] Pneumatically driven, the clamping force is infinitely adjustable (0.1-0.5N) to adapt to different activity states.

[0019] The medical-grade silicone material (Shore hardness A30-A40) conforms to the skin, reducing the risk of pressure sores.

[0020] The gradually narrowing clamping space (minimum gap < catheter outer diameter 0.3mm) avoids excessive compression. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the box body of this utility model;

[0024] Figure 3 This is the front view of this utility model;

[0025] Figure 4 This is a cross-sectional view of the present invention (AA).

[0026] The following are labeled in the diagram: 1. Box body; 2. Medical tape; 3. End cap; 4. Cylindrical; 5. Inner annular airbag; 6. Lifting plate; 7. Lower silicone layer; 8. Circular airbag; 9. Straight channel; 10. Entry hole; 11. Arc-shaped channel; 12. Storage slot; 13. Upper silicone layer. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-4 The specific embodiments of this utility model will be described in further detail.

[0028] Example 1, by Figure 1-4 The present invention provides a device for preventing tube dislodgement during intravenous therapy, comprising a box body 1, medical tape 2, end cap 3, cylinder 4, inner annular airbag 5, lifting plate 6, lower silicone layer 7, circular airbag 8, straight channel 9, entry hole 10, arc-shaped channel 11, storage groove 12, and upper silicone layer 13. The box body 1 has medical tape 2 for attaching to the skin on both sides at the bottom, and the top is detachably connected to the end cap 3.

[0029] A cylinder 4 is fixed to the middle of the inner side of the box 1. An inner annular airbag 5 is sleeved on the outer side of the cylinder 4. The inner annular airbag 5 is configured to deform upward when subjected to pressure.

[0030] A lifting plate 6 is sleeved on the cylinder 4. The lifting plate 6 can move up and down along the cylinder 4, and a lower silicone layer 7 is fixed on its top surface.

[0031] A circular airbag 8 is located at the bottom of the box body 1, and the circular airbag 8 is connected to the inner annular airbag 5.

[0032] A straight channel 9 passes through the lifting plate 6 and the cylinder 4. One end of the straight channel 9 is provided with an entry hole 10 that communicates with the box body 1, and the other end is connected to the storage groove 12 opened on the lower silicone layer 7 through an arc-shaped channel 11.

[0033] An upper silicone layer 13 is disposed inside the lower silicone layer 7, and the upper silicone layer 13 and the lower silicone layer 7 form an elastic clamping structure.

[0034] Box 1: Medical tape 2 is provided on both sides of the bottom, and a detachable end cap 3 is connected to the top by a thread.

[0035] Cylindrical 4: vertically fixed to the middle of the inner side of the box 1, with an inner annular airbag 5 fitted on the outer side.

[0036] Lifting plate 6: Sleeves on cylinder 4, can slide up and down along cylinder, and the top surface is fixed with the lower silicone layer 7.

[0037] Circular airbag 8: Embedded at the bottom of box 1, and connected to inner annular airbag 5 through air guide tube.

[0038] Straight passage 9: runs through the lifting plate 6 and the cylinder 4, with its axis coinciding with the axis of the cylinder 4.

[0039] Entry hole 10: Located at the top of the straight channel 9, it communicates with the inner cavity of the box 1.

[0040] Arc-shaped channel 11: The radius of curvature is greater than the diameter of the conduit, connecting the straight channel 9 and the receiving groove 12.

[0041] Storage slot 12: A semi-circular groove formed on the top surface of the lower silicone layer 7, with the opening direction perpendicular to the clamping surface of the upper silicone layer 13.

[0042] Upper silicone layer 13: Embedded inside the lower silicone layer 7, forming a tapered elastic clamping structure with the lower silicone layer 7.

[0043] Working principle: When this utility model is in use, when the box body 1 is fixed by medical tape 2, it will compress the circular airbag 8 at the bottom of the box body 1, and the gas will enter the inner annular airbag 5 through the air guide tube. Because the inner annular airbag 5 adopts a trapezoidal cross-section design (the top width is smaller than the bottom width), it will produce an upward vector deformation after being compressed.

[0044] The deformable inner annular airbag 5 pushes the lifting plate 6, which is sleeved on the cylinder 4, to rise axially. The cylinder 4 and the straight channel 9 are coaxially arranged to ensure the stability of the vertical movement of the lifting plate 6.

[0045] As the lifting plate 6 rises, the gradually shrinking clamping space formed by the upper silicone layer 13 and the lower silicone layer 7 on the top surface of the lower silicone layer 7 gradually decreases. The minimum gap of this space is designed to be less than the outer diameter of the conduit by 0.1-0.3 mm, utilizing the elasticity of the silicone to form a gradual clamping of the conduit.

[0046] The conduit passes through the inlet hole 10 into the straight channel 9, and the anti-slip texture on the inner wall prevents slippage. The arc-shaped channel 11 guides the conduit into the semi-circular receiving groove 12 with a radius of curvature greater than the conduit diameter, and its 15°-30° inclined outlet ensures that the conduit naturally fits the clamping surface.

[0047] Beneficial effects: The combination of mechanical clamping (silicone layer) and medical tape provides tensile strength ≥30N, which is more than 3 times better than traditional tape fixation. The trapezoidal cross-section airbag design enables dynamic pressure transmission, ensuring continuous and stable clamping.

[0048] Pneumatically driven, the clamping force is infinitely adjustable (0.1-0.5N) to adapt to different activity states.

[0049] The ±45° rotation adjustment function meets the needs of multi-directional catheter fixation.

[0050] The medical-grade silicone material (Shore hardness A30-A40) conforms to the skin, reducing the risk of pressure sores.

[0051] The gradually narrowing clamping space (minimum gap < catheter outer diameter 0.3mm) avoids excessive compression.

[0052] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A catheter-prevention device for intravenous therapy, characterized in that, include: The box body (1) has medical tape (2) for attaching to the skin on both sides of the bottom, and a detachable end cap (3) at the top. A cylinder (4) is fixed to the middle of the inner side of the box body (1), and an inner annular airbag (5) is sleeved on the outer side of the cylinder (4). The inner annular airbag (5) is configured to deform upward when subjected to pressure. A lifting plate (6) is sleeved on the cylinder (4). The lifting plate (6) can move up and down along the cylinder (4), and a lower silicone layer (7) is fixed on its top surface. A circular airbag (8) is provided at the bottom of the box body (1), and the circular airbag (8) is connected to the inner annular airbag (5); A straight channel (9) runs through the lifting plate (6) and the cylinder (4). One end of the straight channel (9) is provided with an entry hole (10) that communicates with the box body (1), and the other end is connected to the storage groove (12) opened on the lower silicone layer (7) through an arc-shaped channel (11). An upper silicone layer (13) is disposed inside the lower silicone layer (7), and the upper silicone layer (13) and the lower silicone layer (7) form an elastic clamping structure.

2. The anti-dislodgement nursing device for intravenous therapy according to claim 1, characterized in that: The radial cross-section of the inner annular airbag (5) is trapezoidal, and the top width of the inner annular airbag (5) is smaller than the bottom width.

3. The anti-dislodgement nursing device for intravenous therapy according to claim 2, characterized in that: The axis of the straight channel (9) coincides with the axis of the cylinder (4), and the radius of curvature of the arc channel (11) is greater than the diameter of the conduit.

4. The anti-dislodgement nursing device for intravenous therapy according to claim 3, characterized in that: The storage groove (12) is a semi-circular groove, and the opening direction of the storage groove (12) is perpendicular to the clamping surface of the upper silicone layer (13).

5. The anti-dislodgement nursing device for intravenous therapy according to claim 4, characterized in that: The inner wall of the straight channel (9) is provided with anti-slip texture, and the outlet end of the arc-shaped channel (11) is inclined toward the storage groove (12).

6. The anti-dislodgement nursing device for intravenous therapy according to claim 5, characterized in that: A tapered clamping space is formed between the upper silicone layer (13) and the lower silicone layer (7), with the minimum gap being smaller than the outer diameter of the conduit.

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