Surrounding type pressurizing ice compress device for knee joint
By designing a technical solution that incorporates a knee-joint wraparound compression device, the problems of fit and stability of the knee joint ice pack device are solved, achieving a continuous pressure cooling effect on the knee joint, with the advantage of low energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING JISHUITAN HOSPITAL
- Filing Date
- 2025-01-14
- Publication Date
- 2026-04-28
AI Technical Summary
Existing ice pack devices are prone to misalignment at the knee joint, failing to fit effectively and resulting in inadequate icing and inconvenience in use.
A knee-encircling pressure ice pack device is designed, comprising a knee joint cover, a water-cooling component, and a pressure component. It utilizes a semiconductor cooling chip and a peristaltic pump to achieve the circulation and cooling of the coolant, and is fixed to the knee joint by an elastic cloth cover and a soft bladder to provide continuous pressure cooling.
It achieves stable cold compress and pressure on the knee joint, improves the effect of ice application, and has the characteristics of low energy consumption and reusability.
Smart Images

Figure CN224166489U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical auxiliary device technology, specifically to a knee joint surround pressure ice pack device. Background Technology
[0002] After total knee replacement surgery, hospitals often use ice packs to alleviate discomfort for patients. Applying ice packs lowers the temperature of the skin, subcutaneous tissue, and muscles around the knee joint, causing vasoconstriction, reducing circulating blood volume, decreasing vascular permeability, promoting blood clotting, and localizing hematoma to achieve hemostasis and reduce exudation.
[0003] However, current methods of applying ice packs have some drawbacks. For example, ice packs used on the knees are block-shaped, which makes it difficult for them to conform well to the patient's knee joint during use. They are also prone to displacement when the patient moves their leg, resulting in the ice not reaching the desired area. Based on the above, this paper proposes a knee joint surround pressure ice pack device. Utility Model Content
[0004] The purpose of this invention is to provide a knee joint surround-type pressure ice pack device to address the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this invention provides the following technical solution:
[0005] It includes a knee joint cover, the inside of which is provided with a pressure component, and the outer surface of which is provided with a water cooling component;
[0006] The knee support includes a frustum-shaped elastic fabric cover and a knee support bag sewn into the middle of the elastic fabric cover.
[0007] The water-cooling assembly includes a water jacket, a peristaltic pump installed on the outer surface of the water jacket, and two thermoelectric coolers attached to the left and right sides of the outer ring of the water jacket by thermal grease. The cooling end face of the thermoelectric cooler is in contact with the outer surface of the water jacket. A copper heat-conducting plate is fixed to the heat-dissipating end face of the thermoelectric cooler, and a small servo fan is fixed to the end face of the copper heat-conducting plate away from the thermoelectric cooler.
[0008] The pressurization assembly includes a soft bladder and a chamber formed inside the soft bladder for the soft bladder to expand and contract.
[0009] The water jacket has a liquid extraction pipe running through its side wall, and the soft bladder has a liquid drain pipe running through its side wall. The end of the liquid extraction pipe away from the water jacket is connected to the liquid extraction port of the peristaltic pump, and the end of the liquid drain pipe away from the soft bladder is connected to the delivery end of the peristaltic pump. A return pipe runs through the soft bladder and the water jacket to allow the coolant inside the soft bladder to be drained back into the water jacket cavity.
[0010] As a preferred embodiment of this utility model: one end of the elastic fabric cover is sewn with a calf elastic band for tightly fitting the calf area; the other end of the elastic fabric cover is sewn with a thigh elastic band for tightly fitting the thigh area.
[0011] As a preferred embodiment of this utility model: a battery for powering the water-cooling component is connected to the side wall surface of the elastic cloth sleeve by an adhesive, and the battery has a charging port.
[0012] As a preferred embodiment of this utility model: the interior of the water jacket is provided with a chamber for filling with coolant, and a protrusion is fixed on the outer surface of the water jacket, and the bottom surface of the peristaltic pump is fixedly connected to the outer surface of the protrusion.
[0013] As a preferred embodiment of this utility model: the semiconductor cooling chips are arranged in a circular array with the central axis of the water jacket as the base point, and the power supply terminals of the semiconductor cooling chips and the power supply terminals of the small servo fan are all connected to power lines.
[0014] As a preferred embodiment of this utility model: the power input terminal of the peristaltic pump and the power cord are both connected to the battery power supply terminal on the side wall of the elastic cloth sleeve.
[0015] As a preferred embodiment of this utility model: the side walls of the water jacket and the soft bladder are respectively provided with through holes for the liquid extraction pipe and the liquid drainage pipe to pass through, and a sealing ring is provided in each through hole.
[0016] As a preferred embodiment of this utility model: a temperature sensor is fixed in the inner cavity of the water jacket, and a control panel is installed on the surface of the water jacket.
[0017] The technical effects and advantages provided by this utility model in the above technical solution are as follows:
[0018] In this technical solution, multiple semiconductor cooling chips are used to cool the coolant in the water jacket, and a peristaltic pump is used to draw the coolant from the water jacket into a soft bladder. After the soft bladder expands, it can wrap around the knee joint. In conjunction with an elastic knee joint covering, it can achieve the effect of applying pressure to fix the soft tissue in the area while applying cold compress to the knee joint, thus providing a continuous and stable pressure ice compress effect on the knee joint. Moreover, compared with the current ice compress methods, this device also has the characteristics of low energy consumption and recyclable use. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0020] Figure 1 A schematic diagram of the overall structure for applying pressure ice to the knee joint;
[0021] Figure 2 A schematic diagram showing the breakdown of the structure of a pressure ice pack on the knee joint;
[0022] Figure 3 A schematic diagram of the water-cooling component in a pressure ice pack structure for the knee joint;
[0023] Figure 4 A schematic diagram of the heat dissipation component of the water-cooling assembly in a pressure ice pack structure for the knee joint.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1. Knee joint covering; 11. Elastic cloth cover; 12. Knee wrap; 13. Thigh elastic band; 14. Calf elastic band; 2. Water cooling assembly; 21. Water jacket; 22. Power cord; 23. Semiconductor cooling chip; 24. Liquid suction tube; 25. Peristaltic pump; 26. Drain tube; 27. Copper heat conduction plate; 28. Small servo fan; 3. Pressurization assembly; 31. Soft bladder; 32. Chamber. Detailed Implementation
[0026] To provide a clearer explanation and description of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.
[0027] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of each embodiment. Specific details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures. The disclosures of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solutions of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.
[0028] Preferred technical solution for a surround-type pressure ice pack device:
[0029] See attached document Figure 1 - Appendix Figure 4 As shown; this embodiment includes:
[0030] It includes a knee joint cover 1, a pressure component 3 is provided inside the knee joint cover 1, and a water cooling component 2 is provided on the outer surface of the knee joint cover 1.
[0031] The knee support sleeve 1 includes a frustum-shaped elastic fabric sleeve 11 and a knee support bag 12 sewn into the middle section of the elastic fabric sleeve 11.
[0032] The water-cooling assembly 2 includes a water jacket 21, a peristaltic pump 25 installed on the outer surface of the water jacket 21, and two thermoelectric coolers 23 attached to the left and right sides of the outer ring of the water jacket 21 by thermal grease. The cooling end face of the thermoelectric cooler 23 is in contact with the outer surface of the water jacket 21. A copper heat-conducting plate 27 is fixed on the heat dissipation end face of the thermoelectric cooler 23. A small servo fan 28 is fixed on the end face of the copper heat-conducting plate 27 away from the thermoelectric cooler 23.
[0033] The pressurization assembly 3 includes a soft bladder 31 and a chamber 32 formed inside the soft bladder 31 for the soft bladder 31 to expand and contract.
[0034] The water jacket 21 has a liquid extraction pipe 24 running through its side wall, and the soft bladder 31 has a liquid drain pipe 26 running through its side wall. The end of the liquid extraction pipe 24 away from the water jacket 21 is connected to the liquid extraction port of the peristaltic pump 25, and the end of the liquid drain pipe 26 away from the soft bladder 31 is connected to the delivery end of the peristaltic pump 25. A return pipe runs through the soft bladder 31 and the water jacket 21 to allow the coolant inside the soft bladder 31 to be drained back into the inner cavity of the water jacket 21.
[0035] One end of the elastic fabric cover 11 is sewn with an elastic band 14 for the calf, which is used to tightly fit the calf area; the other end of the elastic fabric cover 11 is sewn with an elastic band 13 for the thigh, which is used to tightly fit the thigh area. A battery for powering the water-cooling assembly 2 is connected to the side wall surface of the elastic fabric cover 11 by adhesive, and the battery has a charging port.
[0036] The water jacket 21 has a chamber for filling with coolant inside, and a protrusion is fixed on the outer surface of the water jacket 21. The bottom surface of the peristaltic pump 25 is fixedly connected to the outer surface of the protrusion. The semiconductor cooling chips 23 are arranged in a ring array with the central axis of the water jacket 21 as the base point, and the power supply terminals of the semiconductor cooling chips 23 and the power supply terminals of the small servo fan 28 are connected to power lines 22.
[0037] The power input terminal of the peristaltic pump 25 and the power cord 22 are both connected to the battery power supply terminal on the side wall of the elastic cloth sleeve 11. The side walls of the water sleeve 21 and the soft bladder 31 are respectively provided with through holes for the suction pipe 24 and the drain pipe 26 to pass through, and sealing rings are provided in the through holes. A temperature sensor is fixed in the inner cavity of the water sleeve 21, and a control panel is installed on the surface of the water sleeve 21.
[0038] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows:
[0039] After the elastic fabric cover 11 is placed on the knee joint, the calf elastic band 14 is used to tighten it near the calf, and the thigh elastic band 13 is used to tighten it near the thigh, thus stabilizing the elastic fabric cover 11 and the knee wrap 12. The elasticity of the elastic fabric cover 11 itself will wrap around the entire knee joint. After power is supplied to the thermoelectric cooler 23, the cooling end face of the thermoelectric cooler 23 cools the coolant inside the water jacket 21. The control panel controls the airflow of the small servo fan 28, thereby controlling the cooling effect of the thermoelectric cooler 23. After the coolant reaches the appropriate temperature as detected by the temperature sensor, the peristaltic pump 25 and the extraction pipe 24 extract the cooled coolant from inside the water jacket 21 and deliver it to the chamber 32 inside the soft bladder 31 through the drain pipe 26. At this time, because the soft bladder 31 surrounds and wraps around the entire knee joint, the low temperature will be transmitted to the knee joint through the soft bladder 31, achieving the effect of cold compress on the knee joint. The coolant that has circulated inside the soft bladder 31 will return to the interior of the water jacket 21 along the return pipe.
[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A knee joint surround pressure ice pack device, comprising a knee joint covering sleeve (1), characterized in that: The knee joint cover (1) is provided with a pressure component (3) inside, and a water cooling component (2) is provided on the outer surface of the knee joint cover (1). The knee joint covering (1) includes an elastic fabric cover (11) in the shape of a frustum, and a knee covering (12) sewn into the middle section of the elastic fabric cover (11). The water-cooling assembly (2) includes a water jacket (21), a peristaltic pump (25) installed on the outer surface of the water jacket (21), and two semiconductor cooling chips (23) attached to the left and right sides of the outer ring of the water jacket (21) by heat dissipation grease. The cooling end face of the semiconductor cooling chip (23) is in contact with the outer surface of the water jacket (21). A copper heat-conducting plate (27) is fixed on the heat dissipation end face of the semiconductor cooling chip (23). A small servo fan (28) is fixed on the end face of the copper heat-conducting plate (27) away from the semiconductor cooling chip (23). The pressurization assembly (3) includes a soft bladder (31) and a chamber (32) formed inside the soft bladder (31) for the soft bladder (31) to expand and contract. The water jacket (21) has a liquid extraction pipe (24) running through its side wall, and the soft bladder (31) has a liquid drain pipe (26) running through its side wall. The end of the liquid extraction pipe (24) away from the water jacket (21) is connected to the liquid extraction port of the peristaltic pump (25), and the end of the liquid drain pipe (26) away from the soft bladder (31) is connected to the delivery end of the peristaltic pump (25). A return pipe runs through the soft bladder (31) and the water jacket (21) to allow the coolant inside the soft bladder (31) to be drained back into the water jacket (21).
2. The knee joint surround pressure ice pack device according to claim 1, characterized in that: One end of the elastic fabric cover (11) is sewn with a calf elastic band (14) for tightly fitting the calf area; the other end of the elastic fabric cover (11) is sewn with a thigh elastic band (13) for tightly fitting the thigh area.
3. The knee joint surround pressure ice pack device according to claim 1, characterized in that: The sidewall surface of the elastic cloth sleeve (11) is connected by an adhesive to a battery that powers the water-cooling assembly (2), and the battery has a charging port.
4. The knee joint surround pressure ice pack device according to claim 1, characterized in that: The water jacket (21) has a chamber for filling with coolant inside, and a protrusion is fixed on the outer surface of the water jacket (21). The bottom surface of the peristaltic pump (25) is fixedly connected to the outer surface of the protrusion.
5. The knee joint surround pressure ice pack device according to claim 1, characterized in that: The semiconductor cooling chips (23) are arranged in a ring array with the central axis of the water jacket (21) as the base point, and the power supply terminals of the semiconductor cooling chips (23) and the power supply terminals of the small servo fan (28) are connected to power lines (22).
6. The knee joint surround pressure ice pack device according to claim 1, characterized in that: The power input terminal of the peristaltic pump (25) and the power cord (22) are both connected to the battery power supply terminal on the side wall of the elastic cloth sleeve (11).
7. The knee joint surround pressure ice pack device according to claim 1, characterized in that: The side walls of the water jacket (21) and the soft bladder (31) are respectively provided with through holes for the liquid extraction pipe (24) and the liquid discharge pipe (26) to pass through, and a sealing ring is provided in each through hole.
8. The knee joint surround pressure ice pack device according to claim 1, characterized in that: A temperature sensor is fixed in the inner cavity of the water jacket (21), and a control panel is installed on the surface of the water jacket (21).