Limb burn local pressure sore device
By introducing a stepped fixation ring and an infection-proof diaphragm component into the local pressure ulcer device for limb burns, the problem of infection prevention in the non-contact state of the pressure ulcer device is solved, and safe isolation and breathability of the pressure ulcer site are achieved.
Patent Information
- Application Number
- CN202520376227.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-05
AI Technical Summary
Existing pressure ulcer devices for limb burns are insufficient to prevent infection from the external environment when the pressure ulcer is not in contact with the outer clothing.
A pneumatic gasket comprising a stepped fixing ring and an auxiliary connecting air rod was designed, equipped with an infection-proof partition assembly, which isolates external pollution through a ventilated pleated curtain, and has an absorbent cotton layer on the inner ring wall to keep the skin dry.
It effectively prevents pressure sores from becoming infected by external factors, while maintaining breathability and keeping the skin dry, thus avoiding abrasions in the pressure sore area.
Smart Images

Figure CN223930333U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the medical field, specifically to a device for local pressure ulcers caused by limb burns. Background Technology
[0002] When a person's skin is burned, the outer skin tissue is burned away, exposing the tendons underneath, thus forming a pressure ulcer. To accelerate the healing of the burn site, the pressure ulcer should normally be kept in a breathable and unobstructed state. This means that when patients are resting, they need to use special protective equipment to separate the pressure ulcer from the bed surface. Also, when resting, due to unconscious movements such as turning over, the limbs will swing significantly. To protect the pressure ulcers on the limbs from damage, appropriate pressure ulcer protection devices are usually used to separate the limbs from the bed surface.
[0003] Existing pressure ulcer devices for limb burns typically consist of a pneumatic gasket and an absorbent cotton layer on the inner wall of the gasket. The pneumatic gasket increases the distance between the limb and the bed surface and reduces the pressure between the pressure ulcer and the gasket. The absorbent cotton layer then absorbs excess sweat from the skin, ensuring the dryness of the contact surface and preventing inflammation of the pressure ulcer.
[0004] While this structure can effectively prevent pressure sores on the limbs from coming into contact with the outside world, when the body is in the outside world, the pressure sores on the limbs are usually exposed to the outside world, making them very susceptible to infection by dust or sewage. Wearing an outer garment can also cause friction on the pressure sores, leading to inflammation. Utility Model Content
[0005] The technical problem this invention aims to solve is that existing pressure ulcer devices for limb burns are difficult to ensure that the pressure ulcer site is not infected by the external environment when the pressure ulcer is not in contact with the outer clothing.
[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a device for local pressure ulcers in limb burns, including a pneumatic gasket fixed to the limb and an absorbent cotton layer pasted on the inner wall of the pneumatic gasket. The pneumatic gasket includes two fixed rings with a stepped interior and an auxiliary connecting air rod located between the two fixed rings. An anti-infection partition assembly is provided on the inner wall of the pneumatic gasket, located at the outer end of the auxiliary connecting air rod. The anti-infection partition assembly includes a sliding ring pasted on the inner side wall of the pneumatic gasket and a ventilated pleated curtain located between the two sliding rings. Several fixed balls are provided on both sides of the ventilated pleated curtain, located in the inner ring of the ventilated pleated curtain, and the fixed balls pass through the side wall of the sliding ring.
[0007] As an improvement, both the fixing ring and the sliding ring have an opening on one side for easy limb removal, and the fixing ring has Velcro on both sides of the opening for fixation.
[0008] As an improvement, the inner diameter of the auxiliary connecting rod is larger than the maximum inner diameter of the fixing ring.
[0009] As an improvement, the absorbent cotton layer is a detachable structure, and the absorbent cotton layer is adhered to the inner wall of the smallest inner diameter of the fixing ring.
[0010] As an improvement, the air inlet of the retaining ring is located on the outer surface of the retaining ring.
[0011] As an improvement, the fixing ball is bonded to the inner surface of the ventilated pleated curtain with waterproof adhesive, and the two ends of the ventilated pleated curtain are bonded with Velcro.
[0012] The advantages of this invention compared to existing technologies are as follows: This device uses a stepped structure for the fixing ring worn on the limb, ensuring a stable connection while enhancing breathability. It is placed on both sides of the pressure ulcer, with an auxiliary connecting air rod directly above the pressure ulcer. A pullable ventilation pleated curtain is installed on the outer wall of the auxiliary connecting air rod, which isolates external contamination and effectively prevents infection of the pressure ulcer. Furthermore, because the fixing ring has an absorbent cotton layer inside, the auxiliary connecting air rod is in a non-contact state with the skin, thus ensuring that the pressure ulcer is not abraded. Attached Figure Description
[0013] Figure 1 This is a general structural diagram of a local pressure ulcer device for limb burns according to this utility model.
[0014] Figure 2 This is a cross-sectional view of the overall structure of a local pressure ulcer device for limb burns according to this utility model.
[0015] Figure 3 This is an exploded view of the infection-preventing diaphragm component of a local pressure ulcer device for limb burns according to this utility model.
[0016] Figure 4 This is a structural diagram of a pneumatic gasket for a local pressure ulcer device for limb burns according to this utility model.
[0017] As shown in the figure: 1. Pneumatic washer; 11. Fixing ring; 111. Opening; 112. Velcro; 12. Auxiliary connecting air rod; 2. Absorbent cotton layer; 3. Infection-proof partition assembly; 31. Sliding ring; 32. Ventilated pleated curtain; 33. Fixing ball. Detailed Implementation
[0018] The present invention will now be described in further detail with reference to the accompanying drawings.
[0019] As per the instruction manual Figure 1 , 2As shown in Figure 3, the device includes a pneumatic pad 1 fixed to the limb and an absorbent cotton layer 2 adhered to the inner wall of the pneumatic pad 1. The pneumatic pad 1 elevates the limb to prevent direct contact between the pressure sore surface and the bed surface when lying down, while the absorbent cotton layer 2 ensures the dryness of the skin contact surface and avoids skin infection.
[0020] To enhance the air permeability of the pneumatic gasket 1, the pneumatic gasket 1 includes two fixed rings 11 with a stepped interior and an auxiliary connecting air rod 12 located between the two fixed rings 11. The stepped structure of the fixed rings 11 reduces the contact area and increases air permeability without affecting the supporting function. To prevent the auxiliary connecting air rod 12 from contacting the pressure sore surface, the inner diameter of the auxiliary connecting air rod 12 is larger than the maximum inner diameter of the fixed rings 11.
[0021] To facilitate adjustment of the air pressure of the fixing ring 11, the air inlet of the fixing ring 11 is located on the outer side of the fixing ring 11.
[0022] To facilitate the replacement of the absorbent cotton layer 2, the absorbent cotton layer 2 is a detachable structure, and the absorbent cotton layer 2 is glued to the inner wall of the smallest inner diameter of the fixing ring 11.
[0023] To facilitate the placement of the retaining ring 11 of the pneumatic gasket 1 on both sides of the pressure sore surface, one side of the retaining ring 11 is provided with an opening 111 for easy limb removal, and both sides of the opening 111 of the retaining ring 11 are provided with Velcro 112 for fixation.
[0024] As per the instruction manual Figure 1 , 2 As shown in Figure 4, the inner wall of the pneumatic gasket 1 is provided with an infection-proof partition assembly 3 located at the outer end of the auxiliary connecting air rod 12. The infection-proof partition assembly 3 includes a sliding ring 31 adhered to the inner side wall of the pneumatic gasket 1 and a ventilation pleated curtain 32 located between two sliding rings 31. In order to facilitate the opening and closing of the ventilation pleated curtain 32, several fixed balls 33 located in the inner circle of the ventilation pleated curtain 32 are provided on both sides of the ventilation pleated curtain 32. The fixed balls 33 pass through the side wall of the sliding ring 31, so that it can slide open freely like a pleated sunshade on the exterior window of a house. At the same time, in order to facilitate the sliding ring 31 to be quickly put on the patient's limbs, one side of the sliding ring 31 has an opening 111 that is the same as the fixed ring 11.
[0025] The fixing ball 33 is bonded to the inner ring surface of the ventilated pleated curtain 32 with waterproof adhesive, which facilitates the replacement of the fixing ball 33. The two ends of the ventilated pleated curtain 32 are bonded with Velcro to prevent the ventilated pleated curtain 32 from being poorly sealed due to external forces during use.
[0026] In the specific implementation of this utility model, two fixing rings 11 are respectively placed on both sides of the pressure ulcer. Then, the fixing rings 11 are inflated, causing the fixing rings 11 and the auxiliary connecting air rods 12 to bulge, so that the limbs cannot directly contact the bed surface or external fixing surface. At the same time, in order to avoid infection by contaminated dust or fog when walking outside, the ventilation pleated curtain 32 needs to be closed before going out and sealed with Velcro paper to isolate the outside world, ensuring the breathability of the pressure ulcer while preventing external infection.
[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A pressure ulcer device for limb burns, comprising a pneumatic gasket (1) fixed to the limb and an absorbent cotton layer (2) adhered to the inner wall of the pneumatic gasket (1), characterized in that: The pneumatic gasket (1) includes two fixed rings (11) with a stepped interior and an auxiliary connecting air rod (12) located between the two fixed rings (11). The inner wall of the pneumatic gasket (1) is provided with an anti-infection partition assembly (3) located at the outer end of the auxiliary connecting air rod (12). The anti-infection partition assembly (3) includes a sliding ring (31) attached to the inner side wall of the pneumatic gasket (1) and a ventilation pleated curtain (32) located between the two sliding rings (31). Several fixed balls (33) located in the inner circle of the ventilation pleated curtain (32) are provided on both sides of the ventilation pleated curtain (32), and the fixed balls (33) pass through the side wall of the sliding ring (31).
2. The pressure ulcer device for limb burns according to claim 1, characterized in that: Both the fixing ring (11) and the sliding ring (31) have an opening (111) on one side for easy limb removal, and the opening (111) of the fixing ring (11) has Velcro (112) on both sides for fixing.
3. The pressure ulcer device for limb burns according to claim 1, characterized in that: The inner diameter of the auxiliary connecting air rod (12) is greater than the maximum inner diameter of the fixing ring (11).
4. The pressure ulcer device for limb burns according to claim 1, characterized in that: The absorbent cotton layer (2) is a detachable structure, and the absorbent cotton layer (2) is attached to the inner wall of the smallest inner diameter of the fixing ring (11).
5. The pressure ulcer device for limb burns according to claim 1, characterized in that: The air inlet of the fixing ring (11) is located on the outer side of the fixing ring (11).
6. The pressure ulcer device for limb burns according to claim 1, characterized in that: The fixed ball (33) is bonded to the inner ring surface of the ventilated pleated curtain (32) with waterproof adhesive, and the two ends of the ventilated pleated curtain (32) are bonded with magic paper.