A waterproof protection device for a limb
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HEALTH VOCATIONAL COLLEGE
- Filing Date
- 2025-01-08
- Publication Date
- 2026-07-07
AI Technical Summary
Existing waterproof limb protection devices are inadequate in terms of fixation, size adjustment, sealing, and water mist caused by temperature differences. They cannot meet the needs of different usage parts and scenarios, and may cause compression of blood vessels, water seepage, and water mist accumulation.
It adopts a multi-layer fixing device consisting of a ring-shaped airbag, a limiting ring, a fan-shaped silicone block and memory foam, combined with a waterproof membrane and a ventilation hose, to set up multiple waterproof barriers, and solves the problem of water mist caused by temperature difference through a water absorption strip, ensuring sealing and comfort.
It achieves robust waterproofing in different locations and scenarios, reduces the risk of water seepage, avoids water vapor buildup, reduces the risk of skin pressure, and improves user comfort and safety.
Smart Images

Figure CN224461856U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a waterproof limb protection device. Background Technology
[0002] Patients need to use protective devices when bathing or engaging in activities such as limb catheterization (e.g., PICC line insertion) or when they have open wounds to prevent wound contamination. However, current protective products have the following problems:
[0003] 1. The device can only be fixed by tightening the cuff, so its stability cannot be guaranteed. The size cannot be adjusted, and its effective range is limited to patients with a small arm width. In addition, because the cuff needs to play a certain role in fixing, it is easy to compress blood vessels and skin, causing local edema or discomfort.
[0004] 2. Size limitations and inability to guarantee a proper fit can cause sealing problems, making it prone to water leakage during use;
[0005] 3. Due to the temperature difference between the inside and outside, water vapor is easily generated on the inner wall of the device, causing the product to lose its purpose.
[0006] 4. It cannot guarantee the structural support and protection function under special working conditions. Utility Model Content
[0007] The purpose of this invention is to provide a waterproof limb protection device to solve the problems mentioned in the background art.
[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0009] A waterproof limb protection device includes a waterproof sleeve, two fixing devices, and a waterproof membrane. Each fixing device includes an annular airbag, a limiting ring, fan-shaped silicone blocks, and memory foam. The limiting ring is fitted around the outside of the annular airbag. The fan-shaped silicone blocks are spaced apart on the inside of the annular airbag, with memory foam filling the spaces between them. The two fixing devices are respectively located at both ends inside the waterproof sleeve. The waterproof membrane surrounds the fixing devices, and both ends of the waterproof membrane are connected to the limiting ring. Multiple elongated perforated slots are provided on the inner side of the waterproof membrane, and the annular airbags at both ends are connected by a ventilation hose.
[0010] Furthermore, there are two ventilation hoses in total.
[0011] Furthermore, the annular airbag is provided with an air valve on the side near the port of the waterproof sleeve.
[0012] Furthermore, the hollow slot includes a rigid silicone fixing part, a soft silicone part, and a hollow part. The soft silicone part is connected to the waterproof membrane through the rigid silicone fixing part, and the hollow part is provided in the middle of the soft silicone part.
[0013] Furthermore, the end of the rigid silicone fixing part has a smooth curved surface.
[0014] Furthermore, absorbent strips are inserted into the hollowed-out portion.
[0015] Furthermore, multiple fixing rings are evenly arranged on the outer side of the limiting ring, and fixing holes that are adapted to the fixing rings are provided on the waterproof sleeve.
[0016] Furthermore, the waterproof sleeve is made of silicone.
[0017] Beneficial effects:
[0018] The waterproof protection device in this utility model can be used in different parts and scenarios. It sets up multiple waterproof barriers to ensure waterproofing and dehumidification. At the same time, it also sets up a water absorption and dehumidification device to avoid residual water mist inside the device due to factors such as temperature difference. It also sets up an airbag to play a certain role in buffering and protection, and its sealing prevents water droplets from seeping in, ensuring that the insertion site or wound stays dry during showering and reducing the risk of infection. Attached Figure Description
[0019] Fig. 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Fig. 2 This is a cross-sectional view of the fixing device in this utility model;
[0021] Fig. 3 This is a schematic diagram of the hollow slot structure in this utility model.
[0022] The following are labeled in the diagram: 1. Limiting ring; 2. Annular airbag; 3. Valve; 4. Waterproof sleeve; 5. Ventilation hose; 6. Hollow slot; 7. Fan-shaped silicone block; 8. Memory foam; 9. Soft silicone part; 10. Hard silicone fixing part; 11. Waterproof membrane; 12. Hollow part; 13. Fixing ring; 14. Fixing hole. Detailed Implementation
[0023] In the description of this embodiment, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0024] In addition, unless otherwise specified, the components used in the following embodiments are all existing components, and their corresponding connection methods can also be achieved through conventional technical means, which will not be described in detail in this application. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0025] Example 1
[0026] A waterproof limb protection device, such as Figs. 1 to 3 As shown, the sleeve includes a waterproof sleeve 4, two fixing devices, and a waterproof membrane 11. The fixing devices include annular airbags 2, limiting rings 1, fan-shaped silicone blocks 7, and memory foam 8. The limiting rings 1 are fitted on the outside of the annular airbags 2. The fan-shaped silicone blocks 7 are arranged at intervals on the inside of the annular airbags 2, and memory foam 8 is filled between the fan-shaped silicone blocks 7. The two fixing devices are respectively set at both ends inside the waterproof sleeve 4. The waterproof membrane 11 is arranged between the fixing devices. The two ends of the waterproof membrane 11 are respectively connected to the limiting rings 1. Multiple long hollow slots 6 are provided on the inside of the waterproof membrane 11, and the annular airbags 2 at both ends are connected by ventilation hoses 5.
[0027] Specifically, in this embodiment, the limb waterproof protection device forms a multi-layered fixation device using annular airbags 2, fan-shaped silicone blocks 7, and memory foam 8. Two fixation devices are located at both ends. Limiting rings 1 are fitted around the outer rings of the annular airbags 2 to support and fix them. A waterproof membrane 11 is then fixedly connected to the limiting rings 1, surrounding the annular airbags 2 to ensure waterproof performance. The patient places the injured limb inside the device, so only the fan-shaped silicone blocks 7 and memory foam 8 within the annular airbags 2 at both ends directly contact the patient's skin. The memory foam 8, as a filler, does not compress blood vessels in the skin, thus significantly reducing the area of impact on the patient and decreasing the risk of thrombosis and edema caused by pressure. Furthermore, because the fan-shaped silicone blocks 7 and memory foam 8 are elastic, they can adapt to different volumes, thus meeting the needs of different application sites and scenarios. The annular airbags 2 provide a certain degree of cushioning protection, and the space between the waterproof membrane 11 and the skin also acts as a buffer, reducing secondary damage to the wound and thus meeting the requirements in various scenarios. Furthermore, the entire fixation device and waterproof membrane are housed within the waterproof sleeve 4. The waterproof sleeve 4 secures the device to the patient's limb and also provides additional waterproofing to the injured area. The limiting ring 1 provides fixed support for the annular airbag 2.
[0028] Preferably, there are two ventilation hoses 5, both of which are embedded in the inner wall of the waterproof membrane 11 and connected to the two annular airbags 2 on both sides, so that the two annular airbags 2 can exchange gas. Therefore, even if one side leaks air, the other side can be replenished immediately, giving the patient time to notice and deal with it, while avoiding the collapse of the pipe caused by the leakage on one side and the injury caused by the device coming into contact with the wound.
[0029] Preferably, an air valve 3 is provided on the side of the annular airbag 2 near the port of the waterproof sleeve 4. The air valve 3 is relatively short and close to the edge of the annular airbag 2, only slightly higher than the end face of the annular airbag 2. The annular airbag 2 can be inflated or deflated through the air valve 3.
[0030] Preferably, the perforated slot 6 includes a rigid silicone fixing part 10, a soft silicone part 9, and a perforated part 12. The soft silicone part 9 is connected to the waterproof membrane 11 through the rigid silicone fixing part 10, and the perforated part 12 is provided in the middle of the soft silicone part 9. The rigid silicone fixing part 10 and the soft silicone part 9 are adhered to the inner wall of the waterproof membrane 11, and the rigid silicone fixing part 10 supports the soft silicone part 9 to fix its position and shape. The surface of the soft silicone part 9 is perforated to form the perforated part 12, which facilitates the insertion and replacement of the absorbent strip. The absorbent strip absorbs water and dehumidifies, which can prevent the problem of residual water mist inside the device caused by factors such as temperature difference. At the same time, considering the need to avoid damage to the user caused by extra components inside the device in extreme situations, including but not limited to bumps and friction, the rigid silicone fixing part 10 and the soft silicone part 9 are designed so that the absorbent strip with water absorption function can be inserted into the perforated part 12 of the soft silicone part 9, so as to ensure the flatness of the inner wall of the device as much as possible.
[0031] Preferably, the end of the rigid silicone fixing part 10 is a smooth curved surface. Because the rigid silicone fixing part 10 protrudes from the surface of the waterproof membrane 11, there will be sharp edges at the end. Therefore, designing the end as a smooth curved surface can prevent the sharp edges from rubbing against the wound during use and removal.
[0032] Preferably, multiple fixing rings 13 are evenly arranged on the outer side of the limiting ring 1, and fixing holes 14 adapted to the fixing rings 13 are provided on the waterproof sleeve 4. Specifically, fixing rings 13 are respectively provided at the four positions of the limiting ring 1 (top, bottom, left, and right), and fixing holes 14 are also provided at the corresponding positions on the waterproof sleeve 4. The connection and separation of the fixing rings 13 and fixing holes 14 can realize the connection and separation of the fixing device and the waterproof sleeve 4, thereby facilitating the disassembly of the waterproof sleeve 4. In particular, when the waterproof sleeve 4 is not connected to the outside of the fixing device, the diameter of the position where the fixing ring 13 is provided is smaller than the diameter of the limiting ring 1, so the elastic waterproof sleeve 4 can increase the sealing performance of the device when it is put on.
[0033] Preferably, since the four waterproof sleeves serve a waterproof function, the material is made of ultra-thin silicone that is comfortable against the skin.
[0034] Although the embodiments of this utility model have been described in the specification, these embodiments are merely illustrative and should not limit the scope of protection of this utility model. Various omissions, substitutions, and modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.
Claims
1. A waterproof limb protection device, characterized in that: The device includes a waterproof sleeve, two fixing devices, and a waterproof membrane. The fixing device includes an annular airbag, a limiting ring, fan-shaped silicone blocks, and memory foam. The limiting ring is fitted around the outside of the annular airbag, and the fan-shaped silicone blocks are spaced apart on the inside of the annular airbag, with memory foam filling the spaces between the fan-shaped silicone blocks. The two fixing devices are respectively located at both ends inside the waterproof sleeve, and the waterproof membrane surrounds the fixing devices. Both ends of the waterproof membrane are connected to the limiting ring. The inside of the waterproof membrane is provided with multiple long, hollow slots, and the annular airbags at both ends are connected by a ventilation hose.
2. The limb waterproof protection device according to claim 1, characterized in that: There are two ventilation hoses in total.
3. The limb waterproof protection device according to claim 1, characterized in that: The annular airbag has a valve on the side near the port of the waterproof sleeve.
4. The limb waterproof protection device according to claim 1, characterized in that: The hollow slot includes a rigid silicone fixing part, a soft silicone part, and a hollow part. The soft silicone part is connected to the waterproof membrane through the rigid silicone fixing part, and the hollow part is provided in the middle of the soft silicone part.
5. The limb waterproof protection device according to claim 4, characterized in that: The end of the rigid silicone fixing part has a smooth curved surface.
6. The limb waterproof protection device according to claim 4, characterized in that: A water-absorbing strip is inserted into the hollowed-out section.
7. The limb waterproof protection device according to claim 1, characterized in that: Multiple fixing rings are evenly arranged on the outer side of the limiting ring, and fixing holes that are adapted to the fixing rings are provided on the waterproof sleeve.
8. The limb waterproof protection device according to claim 1, characterized in that: The waterproof sleeves are made of silicone.