Mirabilite ice compress bag for joint swelling and pain after knee joint replacement
By designing a Glauber's salt ice pack that combines internal and external cold compresses with a metal mesh structure, the problems of short ice compress time and high risk of frostbite after knee replacement surgery have been solved. This approach achieves longer-lasting cold compresses and enhanced pharmacological effects, improving patient comfort and rehabilitation outcomes while reducing medical costs.
Patent Information
- Application Number
- CN202422401210.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing post-knee replacement ice pack devices have problems such as limited ice application time, high risk of frostbite, high cost and redundant structure, and drug treatment has side effects.
Design a Glauber's salt ice pack comprising an inner and an outer cold compress bag. The inner cold compress bag is composed of a diamond-shaped grid filled with Glauber's salt, while the outer cold compress bag is made of a gel material combined with a wire mesh structure to adapt to the shape of the knee. Fixing straps and elastic sleeves are used for fixation, achieving prolonged cold compress and enhanced pharmacological effects.
It enables prolonged cold compresses, reduces the risk of frostbite, enhances the pharmacological effects of Glauber's salt, improves comfort and fixation, promotes recovery, and reduces medical costs.
Smart Images

Figure CN223787943U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical auxiliary tools technology, specifically to a Glauber's salt ice pack for joint swelling and pain after knee replacement surgery. Background Technology
[0002] Osteoarthritis is a chronic degenerative knee disease with a high incidence rate among middle-aged and elderly people. Currently, total knee arthroplasty (TKA) is the most common treatment both domestically and internationally. TKA can effectively relieve knee pain and improve joint function. However, postoperative joint pain and swelling often cause distress for patients, and their fear of pain can delay the optimal time for rehabilitation training.
[0003] Currently, commonly used clinical methods for reducing swelling and relieving pain include medication and physical therapy. Compared to physical therapy, medication has the advantages of rapid onset and significant effects, but it is expensive, and most drugs need to be metabolized by the liver and kidneys, which can easily cause side effects. Ice packs are a commonly used physical pain relief method in clinical practice, which can lower the temperature of swollen joints and thus reduce pain. However, ordinary ice packs have disadvantages such as high hardness, small contact area with the body surface, easy to cause pressure injury and frostbite, and the liquid after melting can easily soak into the dressing.
[0004] Glauber's salt, a traditional Chinese medicine, is a crystalline form of sodium sulfate. It is water-soluble, possesses strong penetrating power, and can absorb heat. When in contact with the skin, its crystals dissolve with body heat, creating a hypertonic environment that absorbs exudate from the tissue, thus reducing swelling. Glauber's salt ice packs have been used in the early treatment of postoperative joint swelling and pain in traditional Chinese orthopedics, with good clinical results.
[0005] The existing technology disclosure number CN209437485U discloses a malleable Glauber's salt ice pack, which has a metal wire mesh layer for shaping between the inner and outer layers of the bag body, and a Glauber's salt bag that can hold Glauber's salt between the breathable layer and the inner layer, which has a good cold compress effect and good shaping and shaping. The existing technology disclosure number CN213076192U discloses a special ice pack device for knee replacement surgery, which is equipped with a knee brace unit and a weight-bearing unit, which improves the fit of the ice pack to the surgical replacement site and avoids direct contact between the ice pack and the affected area. The above two solutions have the following problems: (1) the ice pack time is limited, and the entire ice pack needs to be replaced after a certain period of time; (2) in the second solution, the weight-bearing unit structure also needs to be set up for redundancy. Utility Model Content
[0006] 1. The technical problem to be solved:
[0007] To address the aforementioned technical problems, this utility model provides a Glauber's salt ice pack for joint swelling and pain after knee replacement surgery. The outer cold pack not only provides cold compress but also enhances the pharmacological effects of Glauber's salt: Glauber's salt exerts its pharmacological effects more easily at low temperatures, which helps constrict blood vessels, reduce tissue fluid exudation, and facilitate drug penetration and absorption.
[0008] 2. Technical Solution:
[0009] A Glauber's salt ice pack for treating joint swelling and pain after knee replacement surgery, characterized in that: it comprises an inner cold pack and an outer cold pack, both detachably connected to the inner and outer sides of an assembled bag; the ice pack material in the inner cold pack is Glauber's salt, and the inner cold pack is divided into multiple rhomboid compartments; the Glauber's salt is evenly distributed in the multiple rhomboid compartments; the ice pack material in the outer cold pack is gel; the assembled bag is slightly larger than the inner and outer cold packs; a metal mesh is embedded inside the main body; when the metal mesh deforms, it causes the assembled bag to deform as well.
[0010] Furthermore, the inner surface of the assembly bag is provided with multiple pockets for laying individual inner cold compress sub-bags; the shape of the pockets is adapted to the shape of the individual inner cold compress sub-bags; each pocket is provided with an opening for replacing the individual inner cold compress sub-bags; the multiple individual inner cold compress sub-bags constitute the inner cold compress bag as a whole; the outer surface of the assembly bag is provided with a pocket for laying an outer cold compress bag.
[0011] Furthermore, the metal mesh embedded inside the columnar bag is in the shape of a grid, with the knee section positioned in the middle of the grid when in use.
[0012] Furthermore, the external cold compress bag is a rectangular cold compress bag; its dimensions are (30~35cm) * (25~35cm).
[0013] Furthermore, the inner cold compress bag is composed of three sub-bags spliced together. Each sub-bag is trapezoidal, corresponding to the upper part of the knee, the knee, and the lower part of the knee in sequence. The dimensions of each part are as follows: the upper part of the knee is (10~12cm)*(30~35cm), the knee part is (12~14cm)*(25~30cm), and the lower part of the knee is (8~10cm)*(20~25cm).
[0014] Furthermore, it also includes a fixing strap; the fixing strap includes two straps fixed to one long side of the assembly bag, and the cold compress bag is fixed by buckles set on opposite sides.
[0015] Furthermore, the strap of the fixing strap is an elastic band; and a fastening Velcro is provided at the end of the strap.
[0016] Furthermore, an elastic sleeve is provided on the inner side of the fixing strap; in use, the knee joint area is fitted into the cavity between the elastic sleeve and the assembly bag.
[0017] 3. Beneficial effects:
[0018] This utility model discloses a Glauber's salt ice pack for joint swelling and pain after knee replacement surgery. It adopts a combination of internal and external cold compress effects and has the following functions: (1) Lowering local temperature: The cold pack can lower the local temperature and slow down local blood circulation through cold stimulation, thereby reducing the release and exudation of inflammatory mediators, so as to relieve pain, swelling and edema. (2) Enhancing the pharmacological effect of Glauber's salt: Glauber's salt is more likely to exert its pharmacological effect at low temperature. Low temperature helps to constrict blood vessels, reduce tissue fluid exudation, and facilitate drug penetration and absorption. (3) Preventing frostbite: The design is to place the ice pack on top of the Glauber's salt pack and then apply it to the skin of the affected limb, taking into account the patient's comfort and safety. (4) Improve comfort: The cold compress uses cold compress gel. Compared with using ice cubes or ice water directly, the cold compress has better heat insulation performance, slows down the rate of temperature drop, and avoids sudden temperature changes causing discomfort to the patient. (5) Convenient fixation and replacement: The assembly bag is equipped with a metal mesh. When in use, the metal mesh is deformed to fit the shape of the knee by applying force. At the same time, the outer cold compress bag made of gel is malleable, which makes the ice compress bag fit the patient's knee joint better.
[0019] Therefore, the combination of ice packs and Glauber's salt used in this method can not only improve patients' clinical symptoms, promote functional recovery, and shorten hospital stay, but also reduce medical costs and improve patient satisfaction. Attached Figure Description
[0020] Figure 1 This is an external view of the Glauber's salt ice pack in this utility model;
[0021] Figure 2 This is an internal view of the Glauber's salt ice pack in this utility model;
[0022] Figure 3 This is an external view of a single inner cold compress sub-bag of the inner ice compress bag in specific embodiment 1;
[0023] Figure 4 This is a schematic diagram showing that the overall inner ice pack of Specific Embodiment 2 is trapezoidal;
[0024] Figure 5 This is an external view of a single inner cold compress sub-bag of the inner ice compress bag in specific embodiment 2;
[0025] Figure 6 This is a schematic diagram of the metal wire mesh embedded in the assembly bag of specific embodiment 3;
[0026] Figure 7 This is one embodiment using a supine position in a specific implementation;
[0027] Figure 8 This is one embodiment using a seated position in a specific implementation.
[0028] Figure 9 This is a schematic diagram of the sleeve in a specific embodiment.
[0029] Reference numerals: 1. Inner cold compress bag; 2. Outer cold compress bag; 3. Assembly bag; 4. Wire mesh; 5. Pocket; 6. Individual inner cold compress sub-bag; 7. Fixing strap; 8. Sleeve. Detailed Implementation
[0030] The present invention will now be described in detail with reference to the accompanying drawings.
[0031] As attached Figure 1 To be continued Figure 2 As shown, a Glauber's salt ice pack for joint swelling and pain after knee replacement surgery is characterized by: comprising an inner cold pack 1 and an outer cold pack 2, both detachably connected to the inner and outer sides of an assembly bag 3; the ice pack material in the inner cold pack is Glauber's salt, and the inner cold pack is divided into multiple rhomboid grids; the Glauber's salt is evenly distributed in the multiple rhomboid grids; the ice pack material in the outer cold pack is gel; the assembly bag is slightly larger than the inner and outer cold packs; a metal mesh 4 is embedded inside the main body; when the metal mesh deforms, it causes the assembly bag to deform as well.
[0032] Furthermore, the inner surface of the assembly bag is provided with multiple pockets 5 for laying individual inner cold compress sub-bags; the shape of the pockets is adapted to the shape of the individual inner cold compress sub-bags 6; each pocket is provided with an opening for replacing the individual inner cold compress sub-bags; the multiple individual inner cold compress sub-bags constitute the inner cold compress bag as a whole; the outer surface of the assembly bag is provided with a pocket for laying an outer cold compress bag.
[0033] Furthermore, the metal mesh embedded inside the columnar bag is in the shape of a grid, with the knee section positioned in the middle of the grid when in use.
[0034] Furthermore, the external cold compress bag is a rectangular cold compress bag; its dimensions are (30~35cm) * (25~35cm).
[0035] Furthermore, the inner cold compress bag is composed of three sub-bags spliced together. Each sub-bag is trapezoidal, corresponding to the upper part of the knee, the knee, and the lower part of the knee in sequence. The dimensions of each part are as follows: the upper part of the knee is (10~12cm)*(30~35cm), the knee part is (12~14cm)*(25~30cm), and the lower part of the knee is (8~10cm)*(20~25cm).
[0036] Furthermore, it also includes a fixing strap 7; the fixing strap includes two straps fixed to one long side of the assembly bag, and the cold compress bag is fixed by buckles set on opposite sides.
[0037] Furthermore, the strap of the fixing strap is an elastic band; and a fastening Velcro is provided at the end of the strap.
[0038] Furthermore, an elastic sleeve is provided on the inner side of the fixing strap; in use, the knee joint area is fitted into the cavity between the elastic sleeve and the assembly bag. Specific Implementation Example 1:
[0040] This implementation example is attached. Figures 1-3 As shown, in this embodiment, the internal cold compress bag is composed of three individual internal cold compress sub-bags spliced together; corresponding to the upper knee, knee, and lower knee parts; each individual internal cold compress sub-bag is square; before use, the three individual internal cold compress sub-bags are laid in the pockets on the inner side wall of the assembled bag; each internal cold compress sub-bag contains a certain mass of Glauber's salt; in order to prevent the Glauber's salt from being unevenly distributed due to gravity, the sub-bag is designed to be composed of multiple rhombuses; the preferred material for applying to the skin surface of the knee joint is non-woven fabric. Figure 2 In order to prevent some areas from not being cooled, the bags used to lay the inner cooling bags are overlapped where they touch, and the opening is set on one side of the bag.
[0041] When using this product, if the cold compress time exceeds the preset time, the Glauber's salt in the inner cold compress bag will no longer be effective and needs to be replaced. Simply remove it from the pocket on the inner wall to replace it.
[0042] In this solution, the external cooling pack uses a gel material for cooling. Once the temperature of the cooling pack rises, it is removed from the bag and placed in a refrigerator to cool further. This demonstrates that the Glauber's salt ice pack can effectively prevent frostbite caused by traditional gels due to excessively low temperatures. Specific Implementation Example 2:
[0044] As attached Figure 3 , 4 As shown, in this embodiment, the inner cooling bag is composed of three individual inner cooling sub-bags spliced together. The difference from the specific embodiment is that each individual inner cooling sub-bag is trapezoidal, and the assembled bag as a whole is also trapezoidal. Figure 5 shows the pocket used to lay out the individual inner cooling sub-bags; this better conforms to the structure of the knee. During use, the individual inner cooling sub-bags are installed through the designated openings. Specific Implementation Example 3:
[0046] As attached Figure 5The image shows a specific embodiment of the inlaid metal mesh inside the main body in this embodiment. This embodiment uses a "grid" shaped metal mesh. During use, the knee area is aligned with the center of the grid for easy fixation. The assembled inner and outer cold compress bags are placed on the knee surface. Force is applied to the outer surface of the assembled bag to conform its shape to the knee's shape. The straps are then secured, and finally, the outer cold compress bag is fixed to the surface of the assembled bag.
[0047] Because the shape of this cooling pack is easily adjustable, it can adapt to different knee shapes. (See attached image) Figure 7 , 8 As shown, this cold compress bag is not only suitable for patients in a lying position, but also for patients in a sitting position, thus helping them recover.
[0048] During the recovery process, the temperature of the external cold compress can be adjusted according to the patient's condition; alternatively, only the internal cold compress can be used. Specific Implementation Example 4:
[0050] like Figure 9 As shown, in order to ensure the stability of this cold compress bag during use, this utility model also provides a sleeve 8 made of elastic fabric inside the tie-type fixing strap; when in use, the knee joint is put into the cavity between the elastic sleeve and the assembly bag, the elastic sleeve fits snugly against the skin behind the knee joint, and then is fixed by a tie with Velcro.
[0051] Although the present invention has been disclosed above with reference to preferred embodiments, these are not intended to limit the present invention. Anyone skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of protection of the claims of this application.
Claims
1. A mirabilite ice bag for post-knee arthroplasty joint swelling and pain, characterized in that: The cold compress bag comprises an inner cold compress bag and an outer cold compress bag, which are respectively detachably connected to the inner and outer surfaces of the assembling bag. The ice compress material in the inner cold compress bag is mirabilite, and the inner cold compress bag is divided into multiple rhombic cells; the mirabilite is uniformly distributed in the multiple rhombic cells; the ice compress material in the outer cold compress bag is gel; the assembling bag is slightly larger than the inner and outer cold compress bags; the assembling bag body is inlaid with a metal wire mesh; when the metal wire mesh is deformed, the assembling bag is deformed.
2. The mirabilite ice bag for swelling and pain of the knee joint after arthroplasty according to claim 1, characterized in that: The inner surface of the assembling bag is provided with multiple pockets for laying single inner cold compress sub-bags; the shape of the pockets is adapted to the shape of the single inner cold compress sub-bags; each pocket is provided with an opening for replacing the single inner cold compress sub-bag; the multiple single inner cold compress sub-bags constitute the inner cold compress bag as a whole; the outer surface of the assembling bag is provided with a pocket for laying the outer cold compress bag.
3. The mirabilite ice bag for swelling and pain of the knee joint after arthroplasty according to claim 1, characterized in that: The metal wire mesh inlaid in the cylindrical bag is in the shape of a cross, and when used, the knee part is located in the middle position of the cross.
4. The mirabilite ice bag for swelling and pain of the knee joint after arthroplasty according to claim 1, characterized in that: The outer cold compress bag is a rectangular cold compress bag; the size is (30-35 cm) * (25-35 cm).
5. The mirabilite ice bag for swelling and pain of the knee joint after arthroplasty according to claim 2, characterized in that: The inner cold compress bag is composed of three sub-bags, and each sub-bag is a trapezoid corresponding to the upper knee, the knee and the lower knee in sequence; the size of each part is as follows: the size of the upper knee part is (10-12 cm) * (30-35 cm), the size of the knee part is (12-14 cm) * (25-30 cm), and the size of the lower knee part is (8-10 cm) * (20-25 cm).
6. The mirabilite ice bag for swelling and pain of the knee joint after arthroplasty according to claim 1, characterized in that: The fixing belt comprises two straps fixed to one long side of the assembling bag, and the fixing of the cold compress bag is realized through the buckle rings arranged on the opposite side.
7. The mirabilite ice bag for swelling and pain of the knee joint after arthroplasty according to claim 6, characterized in that: The strap of the fixing belt is an elastic band; the tail of the strap is provided with a fixed magic tape.
8. The mirabilite ice bag for swelling and pain of the knee joint after arthroplasty according to claim 6, characterized in that: The inner side of the fixing belt is further provided with an elastic sleeve; when used, the knee joint part is sleeved in the cavity between the elastic sleeve and the assembling bag.
Citation Information
Patent Citations
Shapable mirabilite ice compress bag
CN209437485U
Ice compress device special for knee replacement surgery
CN213076192U