Cold compress bag and cold compress system thereof

Abstract

The invention discloses a cold compress bag and a cold compress system thereof.The cold compress bag comprises a first surface layer, a middle layer and a second surface layer, a liquid storage space is defined between the first surface layer and the middle layer, a gas storage space is defined between the second surface layer and the middle layer, the gas storage space is provided with a ventilation opening, and the ventilation opening is communicated with the gas storage space and the outside; the partition piece is connected with the first surface layer and the middle layer so that the liquid storage space can be divided into a water inlet area and a water outlet area which are communicated, the water inlet area is provided with a water inlet, the water inlet is communicated with the water inlet area and the outside, the water outlet area is provided with a water outlet, and the water outlet is communicated with the water outlet area and the outside. The air storage space of the cold compress bag can be inflated through the air vent, so that the function of air pressure treatment is achieved, and venous thrombosis can be prevented; by means of the water inlet and the water outlet, liquid can sequentially pass through the water inlet area and the water outlet area and circulate between the cold compress bag and the cold compress machine, and the limbs of a patient can be evenly and continuously subjected to cold compress.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, and in particular to a cold compress bag and a cold compress system thereof. Background Art

[0002] Cold therapy uses substances below human body temperature to act on the human body surface, causing the contraction of blood vessels in the skin and internal organs through nerve conduction, so as to change the body fluid circulation and metabolism of various systems of the patient's body and achieve the purpose of treatment. In the medical field, cold therapy has been widely used as a physical therapy method to treat various diseases and injuries, which can reduce local bleeding, reduce edema, relieve pain, relieve spasms, etc.

[0003] Patients usually need to stay in bed after surgery. Lack of activity can slow blood flow in the lower extremities, increasing the risk of thrombosis. Blood loss may occur during surgery, which in turn stimulates the coagulation system, making the blood more likely to coagulate, further increasing the risk of thrombosis. Cold compress bags in related technologies can play a role in cold therapy, but have little effect on preventing postoperative venous thrombosis. Summary of the invention

[0004] One object of the present invention is to provide a cold compress bag which, on the basis of achieving a cold therapy effect, is also beneficial for preventing venous thrombosis.

[0005] Another object of the present invention is to provide a cold compress system having the above-mentioned cold compress bag, which not only plays a cold therapy role, but also helps prevent venous thrombosis.

[0006] In order to achieve at least one of the above purposes, the technical solution adopted by the present invention is: a cold compress bag, comprising: a first surface layer, a middle layer and a second surface layer, a liquid storage space is defined between the first surface layer and the middle layer, an air storage space is defined between the second surface layer and the middle layer, the air storage space has a vent, and the vent is connected to the air storage space and the outside world; a partition, the partition is connected to the first surface layer and the middle layer to separate the liquid storage space into a connected water inlet area and a water outlet area, the water inlet area has a water inlet, and the water inlet is connected to the water inlet area and the outside world, and the water outlet area has a water outlet, and the water outlet is connected to the water outlet area and the outside world.

[0007] Preferably, the cold compress bag further comprises a plurality of guide portions, which are configured to connect the second surface layer and the middle layer so that the air storage space is divided into a first clamping area, a holding area and a second clamping area that are connected along a first direction.

[0008] Preferably, the guide portion is connected to the first surface layer and the middle layer, the guide portion is spaced apart from an outer edge of the cold compress bag to define an outer channel between the guide portion and the outer edge of the cold compress bag, and the guide portion is spaced apart from the partition piece to define an inner channel between the guide portion and the partition piece.

[0009] As a preferred embodiment, the partition member includes a main partition portion and a secondary partition portion, the main partition portion is capable of dividing the liquid storage space into the water inlet area and the water outlet area along the second direction, the secondary partition portion is connected to the main partition portion, and the extension direction of the secondary partition portion is arranged at an angle to the extension direction of the main partition portion to define a transition channel on the side away from the water inlet and the water outlet, and the transition channel is capable of connecting the water inlet area and the water outlet area.

[0010] Preferably, the main partition portion includes a first section, a transition section and a second section, the first section and the second section are staggered along the second direction, and the transition section is bent and extended to connect the first section and the second section, so that the width of at least a part of the water inlet area along the second direction gradually increases from the side close to the water inlet along the first direction to the side away from the water inlet.

[0011] Preferably, the secondary partition portion is bent and extends along the second direction, and the center of curvature of the secondary partition portion is located on the side facing the water inlet and the water outlet.

[0012] As a preference, the guide portion includes a first guide portion and a second guide portion, the first guide portion and the second guide portion are both bent and extended along a second direction, the centers of curvature of the first guide portion and the second guide portion are both located on the side facing the water inlet and the water outlet, the first guide portion is arranged closer to the water inlet and the water outlet than the second guide portion, and the length of the first guide portion is greater than the length of the second guide portion.

[0013] Preferably, the cold compress bag further comprises a plurality of diversion parts, at least some of which are arranged in an array to divert the liquid in the liquid storage space.

[0014] Preferably, the outer edge of the cold compress bag includes a plurality of smoothly connected arc segments, which can guide the flow direction of the liquid in the liquid storage space, and the arc segments include a concave segment, which is concavely curved toward the center of the cold compress bag, and when the cold compress bag is tied to a limb, the concave segment can avoid the joints.

[0015] In order to achieve at least one of the above purposes, the technical solution adopted by the present invention is: a cold compress system, comprising: a cold compress bag as described above; a cold compress machine, the cold compress machine comprising a box body, the box body having a containing cavity, capable of containing liquid; a box cover, the box cover being suitable for covering the top of the box body, the box cover comprising a cover body, an inlet and outlet module, a pressurizing module and a control module, the cover body having a containing space, capable of containing the inlet and outlet module, the pressurizing module and the control module; the inlet and outlet module is capable of allowing liquid to circulate between the box body and the cold compress bag, so that the cold The compress machine works in the cold therapy mode, and the water inlet and outlet module is capable of discharging the liquid in the cold compress bag so that the cold compress machine works in the drainage mode; the pressurizing module is capable of inflating the cold compress bag so that the cold compress machine works in the pressurizing mode; the control module is capable of controlling the water inlet and outlet module and the pressurizing module so that the cold compress machine works in at least one of the pressurizing mode, the cold therapy mode and the drainage mode; a water diversion structure, which extends from the cover body to the bottom of the box body, and the water diversion structure is capable of connecting the accommodating cavity and the water inlet and outlet module.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) Through the vent, air can be inflated into the air storage space of the cold compress bag, and then when the cold compress bag is tied to the patient's limb, it can play the role of air pressure therapy, which is beneficial to prevent venous thrombosis;

[0018] (2) Through the water inlet and the water outlet, the liquid can pass through the water inlet area and the water outlet area in turn, and circulate between the cold compress bag and the cold compress machine, which is conducive to uniform and continuous cold compressing of the patient's limbs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front schematic diagram of a cold compress bag according to some embodiments of the present application.

[0020] Figure 2 is a schematic cross-sectional view of a cold compress bag according to some embodiments of the present application.

[0021] Figure 3 It is a front schematic diagram of a cold compress bag according to other embodiments of the present application.

[0022] Figure 4 It is a front schematic diagram of a cold compress bag according to other embodiments of the present application.

[0023] Figure 5 is a schematic diagram of the back side of a cold compress bag according to some embodiments of the present application.

[0024] Figure 6 is a schematic diagram of liquid flow in a cold compress pack according to some embodiments of the present application.

[0025] Figure 7 is a schematic diagram of a cold compress system according to some embodiments of the present application.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of a cold compress machine according to some embodiments of the present application.

[0027] Fig. 9 This is a schematic diagram of the interior of a box cover of a cold compress machine according to some embodiments of the present application.

[0028] Fig.10 It is a cross-sectional schematic diagram of a cold compress machine according to some embodiments of the present application.

[0029] Fig.11 It is a schematic diagram of the three-dimensional structure of the box cover and the water diversion structure according to some embodiments of the present application.

[0030] Fig.12 It is a schematic diagram of a three-dimensional structure in which a lower box cover and a water diversion structure are integrally formed according to some embodiments of the present application.

[0031] Fig.13 It is a schematic diagram of the three-dimensional structure of a pipeline component according to some embodiments of the present application.

[0032] In the figure: 1, cold pack; 11, first surface layer; 12, middle layer; 13, second surface layer; 20, liquid storage space; 21, water inlet area; 211, water inlet; 212, water inlet chamber; 22, water outlet area; 221, water outlet; 222, water outlet chamber; 23, transition channel; 24, inner channel; 25, outer channel; 30, air storage space; 31, vent; 32, first clamping area; 33, holding area; 34, second clamping area; 40, partition; 41, main partition; 411, first section; 412, transition section; 413, second section; 42, secondary partition; 50, guide; 51, first guide; 52, second guide; 60, diversion; 70, outer edge; 71, The first convex section; 72, the concave section; 73, the second convex section; 2, the cold compress machine; 80, the box body; 81, the accommodating chamber; 82, the outer shell; 83, the inner shell; 84, the partition gap; 90, the box cover; 91, the cover body; 911, the upper cover; 912, the lower cover; 913, the accommodating space; 92, the water inlet and outlet module; 93, the pressurizing module; 94, the control module; 101, the water diversion structure; 1011, the main body; 1012, the outer arc part; 1013, the water inlet hole; 1014, the water outlet hole; 201, the pipeline; 2011, the plate body; 2012, the main pipeline; 2013, the auxiliary pipeline; 2014, the reinforcing rib; 2015, the water diversion gap; 301, the filter element; 302, the lighting lamp; 303, the handle. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0034] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0035] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0036] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0037] It should be noted that, as used in this application, the terms "substantially", "approximately" and similar terms are used as terms to express approximation rather than as terms to express degree, and are intended to account for the inherent deviations in measurements or calculations that would be recognized by a person of ordinary skill in the art.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, a contact connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] A cold pack 1, such as Figure 1-Figure 6As shown, it includes: a first surface layer 11, an intermediate layer 12 and a second surface layer 13, a liquid storage space 20 is defined between the first surface layer 11 and the intermediate layer 12, an air storage space 30 is defined between the second surface layer 13 and the intermediate layer 12, the air storage space 30 has an air vent 31, and the air vent 31 connects the air storage space 30 with the outside; a partition 40, the partition 40 connects the first surface layer 11 and the intermediate layer 12 to separate the liquid storage space 20 into a connected water inlet area 21 and a water outlet area 22, the water inlet area 21 has a water inlet 211, and the water inlet 211 connects the water inlet area 21 with the outside, and the water outlet area 22 has a water outlet 221, and the water outlet 221 connects the water outlet area 22 with the outside.

[0040] It should be understood that the air storage space 30 of the cold compress bag 1 can be inflated or the gas in the air storage space 30 can be discharged through the vent 31, and then the patient's limbs can be intermittently pressurized under the condition that the cold compress bag 1 is tied to the patient's limbs, which plays the role of air pressure therapy and is conducive to preventing venous thrombosis. Further, through the water inlet 211 and the water outlet 221, the liquid can pass through the water inlet area 21 and the water outlet area 22 in sequence, and circulate between the cold compress bag 1 and the cold compress machine 2, which is conducive to uniformly and continuously cold compressing the patient's limbs, and plays the role of reducing tissue swelling, reducing bleeding, relieving pain, and slowing down inflammatory reactions.

[0041] In some embodiments, Figure 5 As shown, the cold compress bag 1 further includes a plurality of guide portions 50, which are connected to the second surface layer 13 and the middle layer 12, so that the gas storage space 30 is divided into a first clamping area 32, a holding area 33, and a second clamping area 34 along a first direction. Specifically, the vent 31 and the holding area 33 are respectively located on opposite sides of the first clamping area 32, so that the gas can enter the first clamping area 32, the holding area 33, and the second clamping area 34 in sequence from the vent 31.

[0042] It should be understood that due to the obstruction of the guide portion 50, it is conducive to the gas to fill the first clamping area 32 faster, then slowly transition to fill the holding area 33, and then slowly transition to fill the second clamping area 34. In other words, the first clamping area 32, the holding area 33, and the second clamping area 34 swell in sequence to play the role of gradual pressurization and gradual decompression in different areas, so that the patient's limbs can be treated with air pressure. It is worth mentioning that if the cold compress bag 1 is filled directly, the limbs will be subjected to pressure from multiple different directions, which is not conducive to guiding blood circulation. In this embodiment, the cold compress bag 1 can achieve the effect of gradual pressurization and decompression in different areas, thereby promoting the blood pressure circulation in a certain direction, and better promoting the flow of blood and lymph.

[0043] It is worth mentioning that, compared with the completely connected air storage space 30 without the guide part 50, in this embodiment, the first clamping area 32, the holding area 33 and the second clamping area 34 are sequentially bulged by the guide part 50, so as to achieve the effect of segmented pressurization, which is conducive to simulating the natural muscle pump action and better preventing venous thrombosis. Furthermore, segmented pressurization is conducive to adjusting the pressure according to the specific situation of the patient, improving the comfort and effectiveness of air pressure therapy.

[0044] In addition, by providing the guide portion 50, the bendability of the cold compress bag 1 can be improved, that is, the cold compress bag 1 can be bent at the guide portion 50, which is conducive to making the first clamping area 32, the holding area 33 and the second clamping area 34 fit the patient's limbs more closely, thereby achieving a more comprehensive and substantial wrapping, improving the comfort of use, and improving the operability and convenience of medical staff tying the cold compress bag 1 to the patient's limbs. It should be understood that under the condition of performing air pressure therapy and cold therapy at the same time, the bendability and wrapping of the cold compress bag 1 are better, which is conducive to making the cold compress bag 1 fit the patient's skin more closely, thereby improving the effect of cold therapy.

[0045] In some embodiments, Figure 1-Figure 4 As shown, the guide portion 50 is connected to the first surface layer 11 and the middle layer 12, the guide portion 50 is spaced apart from the outer edge 70 of the cold compress bag 1 to define the outer channel 25 between the guide portion 50 and the outer edge 70 of the cold compress bag 1, and the guide portion 50 is spaced apart from the partition member 40 to define the inner channel 24 between the guide portion 50 and the partition member 40. In other words, the guide portion 50 is connected to the first surface layer 11, the middle layer 12, and the second surface layer 13. On the basis that the guide portion 50 divides the gas storage space 30 into the first clamping area 32, the holding area 33, and the second clamping area 34 along the first direction, the guide portion 50 can also divide the water inlet area 21 of the liquid storage space 20 into a plurality of connected water inlet chambers 212 along the first direction, and divide the water outlet area 22 into a plurality of connected water outlet chambers 222 along the first direction. It should be understood that the guide portion 50 and the outer edge 70 are spaced apart so that the liquid can flow from the outer channel 25 between the guide portion 50 and the outer edge 70 through each water inlet chamber 212 and each water outlet chamber 222, and the guide portion 50 and the partition member 40 are spaced apart so that the liquid can flow from the inner channel 24 between the guide portion 50 and the partition member 40 through each water inlet chamber 212 and each water outlet chamber 222.

[0046] If the guide portion 50 is connected to the outer edge 70, or the guide portion 50 is connected to the partition 40, a dead zone and eddy current may be formed at the connection. In this embodiment, the liquid can flow in the outer channel 25 and the inner channel 24, which is beneficial to reducing the dead zone and eddy current in the liquid storage space 20, and is beneficial to improving the flow efficiency and heat exchange efficiency of the liquid, so that the liquid can circulate more smoothly between the cold compress bag 1 and the cold compress machine 2.

[0047] In addition, when the liquid needs to be drained, by providing the outer channel 25 and the inner channel 24, the dead angle between the guide portion 50, the partition member 40 and the outer edge 70 can be reduced, so that the body can be more smoothly drawn out of the cold compress bag 1, which is beneficial to reduce the residual liquid in the cold compress bag 1, reduce bacterial growth, and improve hygiene.

[0048] It is worth mentioning that the first surface layer 11, the middle layer 12 and the second surface layer 13 can all be bent at the guide portion 50, which is conducive to further improving the bendability and wrapping of the cold compress bag 1. In addition, the provision of the guide portion 50 can also enhance the connection strength of the first surface layer 11, the middle layer 12 and the second surface layer 13, which is conducive to improving the structural reliability of the cold compress bag 1 and reducing the risk of the edge of the cold compress bag 1 being stretched open by gas or liquid.

[0049] In some embodiments, Figure 1-Figure 4 As shown, the partition 40 includes a main partition part 41 and a secondary partition part 42. The main partition part 41 can separate the liquid storage space 20 into a water inlet area 21 and a water outlet area 22 along the second direction. The secondary partition part 42 is connected to the main partition part 41. The extension direction of the secondary partition part 42 is set at an angle with the extension direction of the main partition part 41 to define the transition channel 23 on the side away from the water inlet 211 and the water outlet 221. The transition channel 23 can connect the water inlet area 21 and the water outlet area 22. It should be understood that the liquid enters the liquid storage space 20 from the water inlet 211, flows through the various water inlet chambers 212 of the water inlet area 21, the transition channel 23 and the various water outlet chambers 222 of the water outlet area 22 in sequence, and then is discharged from the liquid storage space 20 from the water outlet 221. In other words, the liquid can flow approximately one circle in the liquid storage space 20.

[0050] If there is no partition 40 to separate the liquid storage space 20 into the water inlet area 21, the transition channel 23 and the water outlet area 22, the liquid may mainly flow on the side close to the water inlet 211 and the water outlet 221, while the liquid on the side far from the water inlet 211 and the water outlet 221 is difficult to fully flow and participate in the circulation between the cold compress bag 1 and the cold compress machine 2. In this embodiment, by providing the partition 40, it is beneficial to make the liquid flow through the water inlet area 21, the transition channel 23 and the water outlet area 22 in a relatively orderly manner, so as to circulate approximately one circle in the liquid storage space 20, and then on the basis of ensuring that the liquid circulates more efficiently, it is beneficial to make the temperature of each part of the cold compress bag 1 more uniform, reduce the risk of skin frostbite caused by long-term low temperature in local areas, and reduce the risk of long-term high temperature in local areas that makes it difficult to effectively apply cold compress, which is beneficial to improve the patient's comfort and the reliability of the cold therapy effect.

[0051] In at least one embodiment, Figure 1-Figure 7 As shown, the water inlet 211, the water outlet 221 and the vent 31 are located on the same side of the outer edge 70 of the cold compress bag 1. When the water inlet 211, the water outlet 221 and the vent 31 are connected to the cold compress machine 2 through pipelines respectively, it is beneficial to integrate the various pipelines into the same pipe belt so as to facilitate connection and conduction with another pipe belt connected to the cold compress machine 2, thereby improving the convenience of operation.

[0052] It is worth mentioning that Figure 1 As shown, the main partition portion 41 is arranged close to the midline of the liquid storage space 20 extending along the first direction, so that the volume difference between the water inlet area 21 and the water outlet area 22 is small, and the water inlet 211 and the water outlet 221 are respectively located on both sides of the main partition portion 41, which is beneficial to keep the liquid capacity of the water inlet area 21 and the water outlet area 22 uniform, thereby further improving the cooling effect.

[0053] In some embodiments, Figure 1 As shown, the main partition portion 41 includes a first section 411, a transition section 412 and a second section 413. The first section 411 and the second section 413 are staggered along the second direction, and the transition section 412 is bent and extended to connect the first section 411 and the second section 413, so that from the side close to the water inlet 211 along the first direction to the side away from the water inlet 211, the width of at least a portion of the water inlet area 21 along the second direction gradually increases.

[0054] It should be understood that the flow rate and pressure of the liquid when it flows from the cold compress machine 2 to the cold compress bag 1 are relatively large, and at least part of the flow channel of the water inlet area 21 is widened, so that the flow rate of the liquid after entering the liquid storage space 20 is reduced, which is conducive to reducing the wear and impact of the liquid on the first surface layer 11, the middle layer 12 and the outer edge 70 of the cold compress bag 1, thereby improving the durability and service life of the cold compress bag 1, and helping to reduce the risk of leakage caused by the cold compress bag 1 being broken by the liquid. In addition, reducing the flow rate can also reduce the pressure loss of the liquid, which is conducive to improving the stability of the liquid flow, reducing the risk of irritation to the skin in the cold compress area caused by the impact force of the liquid flow, and helping to improve the comfort of the patient.

[0055] In addition, compared with the transition section 412 extending in a straight line or in a curved manner to connect the first section 411 and the second section 413, in this embodiment, the transition section 412 extends in a curved manner, which is conducive to a smooth transition to connect the first section 411 and the second section 413 to guide the flow of liquid, and is conducive to avoiding corners, reducing dead zones, and reducing the obstruction of the main partition portion 41 to the flow of liquid, thereby improving the efficiency of liquid circulation and the efficiency of emptying the liquid.

[0056] In at least one embodiment, Figure 1 As shown, the transition section 412 is one or more arc segments. In at least one other embodiment, as Figure 3 and Figure 4 As shown, the transition section 412 is a parabola, a hyperbola, an elliptical arc segment, a sine curve, an exponential curve, an irregular curve, etc. This application does not impose any specific limitation on this.

[0057] In at least one embodiment, Figure 1-Figure 4 As shown, the second section 413 is arranged close to the center line of the cold compress bag 1, so as to more evenly separate the water inlet area 21 and the water outlet area 22, which is conducive to making the hydraulic pressure in the liquid storage space 20 more stable, thereby making the flow of the liquid more stable and smooth, which is conducive to improving the efficiency of liquid circulation and the efficiency of emptying the liquid. The first section 411 is arranged along the second direction toward the water inlet area 21, and then through the position difference between the first section 411 and the second section 413 along the second direction, the width of the part of the water inlet area 21 corresponding to the transition section 412 along the second direction gradually increases from the side close to the water inlet 211 along the first direction to the side away from the water inlet 211, which is conducive to playing a pressure relief role. It is worth mentioning that along the first direction, the transition section 412 is located on the side close to the cold compress bag 1 with the water inlet 211, which is conducive to timely playing a pressure relief role after the liquid enters the water inlet area 21 of the liquid storage space 20.

[0058] In some embodiments, Figure 1-Figure 4As shown, the secondary partition portion 42 bends and extends along the second direction, and the center of curvature of the secondary partition portion 42 is located on the side facing the water inlet 211 and the water outlet 221. It should be understood that the secondary partition portion 42 and the outer edge 70 on the cold compress bag 1 on the side away from the water inlet 211 are spaced apart along the first direction, so that a transition channel 23 is formed between the secondary partition portion 42 and the outer edge 70. Compared with the outer edge 70 on the side away from the water inlet 211, the secondary partition portion 42 is arranged closer to the water inlet 211, and the secondary partition portion 42 extends along the second direction, so as to play a role in blocking the liquid. In other words, the liquid in the water inlet area 21 needs to bypass the secondary partition portion 42 to enter the transition channel 23. Figure 6 As shown by the solid arrow, it is helpful to prevent the liquid from directly impacting the outer edge 70 along the first direction, so as to further reduce the risk of leakage caused by the cold compress bag 1 being broken by the liquid.

[0059] Furthermore, the center of curvature of the secondary partition portion 42 is located on the side facing the water inlet 211 and the water outlet 221. When the liquid needs to be drained, the secondary partition portion 42 can guide the liquid to flow toward the water outlet area 22, which is beneficial to avoid liquid retention in the transition channel 23, thereby improving the efficiency of draining the liquid, reducing the amount of residual liquid in the cold compress bag 1, and helping to reduce bacterial growth.

[0060] In at least one embodiment, Figure 1-Figure 4 As shown, the secondary partition portion 42 is arranged in parallel or approximately in parallel with the portion of the outer edge 70 opposite to the secondary partition portion 42 along the first direction, so that the width of the transition channel 23 between the secondary partition portion 42 and the outer edge 70 along the first direction is relatively uniform, which is beneficial for the liquid to flow through the transition channel 23 more smoothly and steadily, reduces the generation of turbulence, and is beneficial for further improving the circulation efficiency of the liquid and the efficiency of emptying the liquid.

[0061] It is worth mentioning that the main partition portion 41 is able to extend along the first direction to connect the first surface layer 11 and the middle layer 12, and the secondary partition portion 42 is able to extend along the second direction to connect the first surface layer 11 and the middle layer 12, which is beneficial to improve the connection strength between the first surface layer 11 and the middle layer 12 and improve the structural reliability of the cold compress bag 1.

[0062] In some embodiments, Figure 1 and Figure 5 As shown, the guide portion 50 includes a first guide portion 51 and a second guide portion 52, and the first guide portion 51 and the second guide portion 52 are both bent and extended along the second direction. The centers of curvature of the first guide portion 51 and the second guide portion 52 are both located on the side facing the water inlet 211 and the water outlet 221. The first guide portion 51 is arranged closer to the water inlet 211 and the water outlet 221 than the second guide portion 52, and the length of the first guide portion 51 is greater than the length of the second guide portion 52.

[0063] It should be understood that, compared with the second guide portion 52, the first guide portion 51 is arranged closer to the water inlet 211 and the water outlet 221, and the length of the first guide portion 51 is greater than the length of the second guide portion 52, which is conducive to making the width of the outer channel 25 between the first guide portion 51 and the outer edge 70 smaller, so that the first guide portion 51 can withstand more impact force of the liquid along the first direction, and can guide the liquid to flow to the inner channel 24 between the first guide portion 51 and the partition member 40, as shown in FIG. Figure 6 As shown by the solid arrow, the width of the outer channel 25 between the second guide portion 52 and the outer edge 70 is relatively large, which is conducive to the smooth passage of the liquid.

[0064] Furthermore, the centers of curvature of the first guide portion 51 and the second guide portion 52 are both located on the side facing the water inlet 211 and the water outlet 221. When the liquid needs to be drained, the first guide portion 51 and the second guide portion 52 can guide the liquid to flow toward the outer channel 25. Figure 6 As shown by the dotted arrow, it is beneficial for the liquid to flow to the water outlet 221 through the outer channel 25 and the transition channel 23, which is beneficial to avoid the liquid from being retained in the inner channel 24, the water inlet chamber 212, and the water outlet chamber 222, so as to improve the efficiency of emptying the liquid, reduce the residual liquid in the cold compress bag 1, and help reduce bacterial growth.

[0065] In at least one embodiment, Figure 1 and Figure 5 As shown, a group of first guide portions 51 and second guide portions 52 are respectively provided on both sides of the main partition portion 41 along the second direction, and from one end close to the main partition portion 41 to the end close to the outer edge 70, the first guide portion 51 and the second guide portion 52 are both bent toward the side where the water inlet 211 and the water outlet 221 are located, which is beneficial for draining the liquid to the outer channel 25. When the liquid needs to be drained, the risk of the liquid being intercepted by the first guide portion 51 and the second guide portion 52 along the first direction can be further reduced, which is beneficial for further reducing the amount of residual liquid in the cold compress bag 1.

[0066] In some embodiments, Figure 1-Figure 4 As shown, the cold compress bag 1 also includes a plurality of diverter portions 60, at least some of which are arranged in an array, so as to divert the liquid in the liquid storage space 20. It should be understood that if the diverter portion 60 is not provided, the difference between the liquid flow rate near the center of the liquid storage space 20 and the liquid flow rate near the outer edge 70, the guide portion 50 and the partition 40 is large, and the possibility of turbulence is greater. In this embodiment, by providing the diverter portion 60, the friction area between the liquid and the cold compress bag 1 is increased, and the flow rate difference of the liquid in the liquid storage space 20 is reduced, which is conducive to avoiding the phenomenon of turbulence of the liquid.

[0067] It is worth mentioning that a plurality of diverter portions 60 are connected to the first surface layer 11 and the middle layer 12, which is conducive to improving the connection strength between the first surface layer 11 and the middle layer 12, improving the structural reliability of the cold compress bag 1, and further reducing the thickness of the cold compress bag 1 when it is filled with liquid, so that the cold compress bag 1 is easy to roll up and spread when it is filled with liquid. In addition, by providing a plurality of diverter portions 60, it is also conducive to improving the bendability and wrapping of the cold compress bag 1, which is conducive to making the cold compress bag 1 more closely fit the patient's skin, thereby improving the effect of cold therapy.

[0068] In some embodiments, Figure 1-Figure 6 As shown, the outer edge 70 of the cold compress bag 1 includes a plurality of smoothly connected arc segments, and the arc segments can guide the flow direction of the liquid in the liquid storage space 20. It should be understood that compared with the outer edge 70 extending in a fold line, the outer edge 70 of this embodiment is a plurality of smoothly connected arc segments, which is conducive to reducing the resistance of the outer edge 70 to the flow of liquid, thereby reducing pressure loss and improving the smoothness of the flow of liquid. Further, the outer edge 70 is a plurality of smoothly connected arc segments, which is conducive to reducing dead zones and eddies. When the liquid needs to be emptied, the risk of liquid being retained in the dead zone at the corner of the outer edge 70 can be reduced, which is conducive to further reducing the amount of liquid residual in the cold compress bag 1.

[0069] In addition, the continuous guiding effect of the outer edge 70 on the flow direction of the liquid is also beneficial to reduce the impact force of the liquid on the outer edge 70, and to make the stress distribution on the outer edge 70 more uniform, thereby reducing the risk of the outer edge 70 being broken by the liquid and causing leakage of the cold compress bag 1.

[0070] Further, such as Figure 1 As shown, the arc segment includes a concave segment 72, which is concave and curved toward the center of the cold compress bag 1. When the cold compress bag 1 is tied to a limb, the concave segment 72 can avoid joints, such as elbows, cubital fossa, wrists, knees, popliteal fossa, ankles, etc., which helps to avoid affecting the patient's normal activities, improve the patient's comfort, and be more ergonomic.

[0071] In at least one embodiment, Figure 1 As shown, the outer edge 70 also includes a first convex section 71 and a second convex section 73, and the concave section 72 is connected to the first convex section 71 and the second convex section 73. Specifically, the outer edge 70 of the cold compress bag 1 is symmetrical along the second direction, and the first convex section 71 is convex and curved away from the center of the cold compress bag 1, which is conducive to forming a match with the transition section 412 of the main partition part 41, so as to promptly relieve pressure after the liquid enters the water inlet area 21 of the liquid storage space 20, and is conducive to guiding the liquid to flow to the water outlet 221, so as to improve the drainage efficiency, as shown in FIG. Figure 6As shown by the solid arrow. The concave section 72 and the retaining area 33 of the air storage space 30 are arranged relative to each other along the second direction, so that the joints can be avoided when the cold compress bag 1 is tied to the patient's limbs. The second convex section 73 is rotated and bent to extend, so as to connect the two concave sections 72. Furthermore, the second convex section 73 and the auxiliary partition part 42 are arranged relative to each other along the first direction, so that a transition channel 23 is formed between the second convex section 73 and the auxiliary partition part 42. It should be understood that the rotating and bent second convex section 73 is conducive to guiding the liquid from the water inlet area 21 into the transition channel 23, and from the transition channel 23 into the water outlet area 22, thereby improving the smoothness of the liquid flow in the liquid storage space 20, and thus helping to improve the circulation efficiency of the liquid and the drainage efficiency.

[0072] In some embodiments, when the liquid needs to be drained, the cold compress machine 2 is able to extract the liquid in the liquid storage space 20, and at the same time, the cold compress machine 2 is able to inflate the gas storage space 30, and squeeze the cold compress bag 1 by applying pressure to simulate the action of manually squeezing the cold compress bag 1, thereby causing the liquid in the liquid storage space 20 to flow, which is beneficial for the liquid to flow back to the cold compress machine 2, thereby further reducing the amount of liquid retained in the cold compress bag 1.

[0073] It should be understood that when the cold compress machine 2 inflates the air storage space 30, the middle layer 12 and the second surface layer 13 are stretched open, so that the middle layer 12 can provide an extrusion force toward the first surface layer 11, driving the liquid to flow in the liquid storage space 20. At the same time, the partition 40, the guide part 50, the diversion part 60 and the outer edge 70 can provide guidance for the liquid, which is beneficial to avoid liquid retention in dead areas, so that the liquid is more fully discharged from the water storage space.

[0074] A cold compress system, such as Figure 7-Figure 13 As shown, it includes the above-mentioned cold compress bag 1 and a cold compress machine 2.

[0075] like Figure 8-Figure 10As shown, the cold compress machine 2 includes a box body 80, a box cover 90 and a water diversion structure 101. The box body 80 has a receiving chamber 81 for containing liquid; the box cover 90 is suitable for covering the box body 80. The box cover 90 includes a cover body 91, an inlet and outlet module 92, a pressurizing module 93 and a control module 94. The cover body 91 has an accommodating space 913, which can accommodate the inlet and outlet module 92, the pressurizing module 93 and the control module 94. The inlet and outlet module 92 can make the liquid circulate between the box body 80 and the cold compress bag 1, so that the cold compress machine 2 works in the cold therapy mode; the inlet and outlet module 92 can extract the liquid in the cold compress bag 1, so that the cold compress machine 2 works in the drainage mode. The pressurizing module 93 can inflate the cold compress bag 1, so that the cold compress machine 2 works in the pressurizing mode. The control module 94 can control the inlet and outlet module 92 and the pressurizing module 93, so that the cold compress machine 2 works in at least one of the pressurizing mode, the cold therapy mode and the drainage mode. The water diversion structure 101 extends from the cover body 91 to the bottom of the box body 80 , so that the water diversion structure 101 is connected to the accommodating cavity 81 and the water inlet and outlet module 92 .

[0076] Specifically, the water inlet and water discharge module 92 is connected to the water inlet 211 of the cold compress bag 1 through at least one water inlet pipe, so that the liquid flows from the cold compress machine 2 to the cold compress bag 1, and the water inlet and water discharge module 92 is connected to the water outlet 221 of the cold compress bag 1 through at least one water return pipe, so that the liquid flows back from the cold compress bag 1 to the cold compress machine 2. The pressurizing module 93 is connected to the vent 31 of the cold compress bag 1 through at least one air pipe, so as to inflate the cold compress bag 1.

[0077] It should be understandable that, through the control module 94 and the water inlet and outlet module 92, the cold compress machine 2 can be operated in the cold therapy mode. The water inlet and outlet module 92 allows the liquid to circulate between the cold compress machine 2 and the cold compress bag 1. The cold compress bag 1 is tied to the patient's limbs, thereby cooling the patient's limbs, reducing tissue swelling, reducing bleeding, relieving pain, and alleviating inflammatory reactions.

[0078] Furthermore, through the control module 94 and the pressurizing module 93, the cold compress machine 2 can be operated in the pressurizing mode. The pressurizing module 93 inflates the cold compress bag 1, and the cold compress bag 1 is tied to the patient's limbs, thereby generating pressure on the limbs, thereby preventing venous thrombosis and enhancing venous blood flow in the lower limbs.

[0079] Furthermore, through the control module 94 and the water inlet and outlet module 92, the cold compress machine 2 can work in the drainage mode, and the water inlet and outlet module 92 can discharge the liquid in the cold compress bag 1, which is beneficial to avoid liquid retention in the cold compress bag 1, reduce bacterial growth, and improve sanitary conditions.

[0080] It is worth mentioning that, compared with setting a drain port on the cold compress bag 1 to discharge the liquid in the cold compress bag 1 by manual draining, in this embodiment, the liquid in the cold compress bag 1 is discharged by using the water inlet and outlet module 92, which helps to reduce the workload of medical staff and is also convenient for patients to operate by themselves; and it is also helpful to avoid setting a drain port on the cold compress bag 1, thereby improving the sealing of the cold compress bag 1.

[0081] In some embodiments, when the cold compress machine 2 operates in drainage mode, the pressurizing module 93 is able to inflate air into the cold compress bag 1 to squeeze the cold compress bag 1, which is conducive to the liquid flowing back to the cold compress machine 2, thereby further reducing the amount of liquid retained in the cold compress bag 1.

[0082] In at least one embodiment, in the early stage of the drainage mode, only the water inlet and outlet module 92 works so that the liquid in the cold compress bag 1 can be discharged more quickly; in the later stage of the drainage mode, the water inlet and outlet module 92 and the pressurizing module 93 work simultaneously, so that the pressurizing module 93 can inflate the cold compress bag 1, which is beneficial to squeeze the liquid in the cold compress bag 1 toward the return pipe, thereby improving the drainage efficiency.

[0083] In some embodiments, Figure 10-12 As shown, along the extension direction of the water diversion structure 101, the water diversion structure 101 is in a tapered shape with a larger top and a smaller bottom, which is conducive to making the water droplets retained on the surface of the water diversion structure 101 slide off, reducing the residual water stains and scale on the surface of the water diversion structure 101, and is conducive to improving the sanitary condition of the cold compress machine 2. In addition, the tapered structure with a larger top and a smaller bottom is easy to clean. It should be understood that compared with the straight-cylindrical water diversion structure 101, the water diversion structure 101 in this embodiment is easier for cleaning tools to be inserted, which is conducive to more convenient and more comprehensive cleaning of the water diversion structure 101.

[0084] In some embodiments, Figure 10-12 As shown, the water diversion structure 101 includes a main body 1011 and a plurality of outer arc parts 1012, the outer arc parts 1012 surround the outer periphery of the main body 1011, and the outer arc parts 1012 protrude radially from the main body 1011, so that the water diversion structure 101 is in a cone shape with a larger top and a smaller bottom. It should be understood that the angle between the arc surface at the connection between the end of the outer arc part 1012 and the main body 1011 and the horizontal plane is small, so it is conducive to water droplets dripping directly from the end of the outer arc part 1012, so as to further reduce the residual water stains and scale on the surface of the water diversion structure 101. In addition, the radial size of the outer arc part 1012 is larger than that of the main body 1011, which is conducive to improving the structural strength of the water diversion structure 101. It is worth mentioning that the cooperation of the plurality of main bodies 1011 and the plurality of outer arc parts 1012 can make the water diversion structure 101 approximate to an iceberg shape, which is conducive to improving the aesthetics of the water diversion structure 101.

[0085] In at least one embodiment, the plurality of outer arc portions 1012 are irregularly shaped, and the outer arc portions 1012 are not identical to each other. In at least one other embodiment, the outer arc portion 1012 is an ellipsoid, or an elliptical parabola, or a single-leaf hyperboloid, or a double-leaf hyperboloid, etc., which is not specifically set in the present application.

[0086] In some embodiments, Fig.11 and Fig.12 As shown, the water diversion structure 101 has a plurality of water inlet holes 1013 and at least one water outlet hole 1014. The water inlet hole 1013 is opened at the end of the water diversion structure 101 so as to be arranged opposite to the bottom of the box body 80. The water inlet hole 1013 allows the liquid in the accommodating chamber 81 to enter the water inlet and outlet module 92. The water outlet hole 1014 is located above the water inlet hole 1013. The water outlet hole 1014 allows the liquid in the water inlet and outlet module 92 to be discharged into the accommodating chamber 81.

[0087] That is, the water inlet 1013 is arranged near the bottom of the box body 80, so that the water inlet and outlet module 92 can extract the liquid at the bottom of the accommodating chamber 81 into the cold compress bag 1, and the water outlet 1014 is located above the water inlet 1013, that is, arranged near the box cover 90 or near the liquid surface, so that the liquid discharged from the cold compress bag 1 can flow to the upper layer of the accommodating chamber 81, that is, flow to the liquid surface or a position close to the liquid surface. It should be understood that the temperature of the liquid extracted into the cold compress bag 1 is relatively low, and the temperature of the liquid discharged from the cold compress bag 1 is relatively high. Flowing the discharged liquid to the liquid surface is conducive to slowing down the heat transfer of the liquid with a higher temperature to the liquid close to the bottom of the accommodating chamber 81, and thus is conducive to keeping the temperature of the liquid at the bottom of the accommodating chamber 81 relatively low.

[0088] In some embodiments, Fig.10 As shown, the distance H from the end of the water diversion structure 101 to the bottom of the box 80 is less than 5 cm. It should be understood that the water inlet 1013 is opened at the end of the water diversion structure 101, that is, the water inlet 1013 is close to the bottom of the box 80. It should be understood that compared with the position close to the water surface, the water pressure near the bottom of the box 80 is greater, which is conducive to improving the water absorption efficiency. In addition, it can also reduce the disturbance of the water surface during the water absorption process, which is conducive to more stable absorption of water into the cold compress bag 1. It is worth mentioning that the water inlet 1013 is arranged close to the bottom of the box 80, which is also conducive to avoiding the absorption of air into the cold compress bag 1, and further improving the reliability of the cold compress machine 2 and the cold compress bag 1 during use.

[0089] Preferably, the distance H from the end of the water diversion structure 101 to the bottom of the box 80 is less than 3 cm. More preferably, the distance H from the end of the water diversion structure 101 to the bottom of the box 80 is less than or equal to 1 cm.

[0090] In some embodiments, Fig.10As shown, the cover body 91 includes an upper cover 911 and a lower cover 912 that are adapted to be buckled with each other, and a receiving space 913 is formed between the upper cover 911 and the lower cover 912 to receive the water inlet and outlet module 92, the pressurizing module 93, and the control module 94. Furthermore, the water diversion structure 101 is integrally formed with the lower cover 912, which is beneficial to reducing the number of parts and manufacturing costs, and is also beneficial to improving the sealing between the water diversion structure 101 and the lower cover 912, thereby reducing the risk of water ingress to each module in the cover body 91, thereby improving the reliability and safety of the cold compress machine 2.

[0091] In some embodiments, Fig.10 and Fig.13 As shown, the cold compress machine 2 also includes a pipe member 201, which is arranged in the water diversion structure 101. The pipe member 201 includes a plate body 2011, a main pipe 2012 and a sub-pipe 2013. The plate body 2011 is sealed and connected to the water diversion structure 101, defining a water diversion gap 2015 between the pipe member 201 and the sealing structure. The main pipe 2012 extends from the plate body 2011 toward the end of the water diversion structure 101 to connect the water diversion gap 2015 and the inlet and outlet module 92, so that liquid enters the inlet and outlet module 92. The sub-pipe 2013 is located above the main pipe 2012. The sub-pipe 2013 extends from the plate body 2011 toward the side wall of the water diversion structure 101 to connect the water diversion gap 2015 and the inlet and outlet module 92, so that liquid is discharged to the accommodating cavity 81.

[0092] It should be understood that, under the action of the water inlet and outlet module 92, the liquid in the accommodating chamber 81 enters the cold compress bag 1 through the water inlet hole 1013 of the water diversion structure 101, the water diversion gap 2015, the main pipe 2012 of the pipeline component 201, and the water inlet pipe, and flows back to the accommodating chamber 81 through the return pipe of the pipeline component 201, the auxiliary pipe 2013, the water diversion gap 2015 and the water outlet hole 1014 of the water diversion structure 101.

[0093] In at least one embodiment, Fig.10 As shown, the plate body 2011 is fixed to the lower cover 912 , and a sealing member is provided between the plate body 2011 and the lower cover 912 to seal and connect the pipe member 201 and the lower cover 912 .

[0094] In at least one embodiment, Fig.10 and Fig.13 As shown, the pipe member 201 further includes a plurality of reinforcing ribs 2014 , and the reinforcing ribs 2014 are capable of connecting the plate body 2011 and the main pipe 2012 , which is beneficial to improving the structural strength of the pipe member 201 .

[0095] In at least one embodiment, the secondary conduit 2013 is disposed opposite to the water outlet hole 1014 of the water diversion structure 101 , which facilitates the water discharged from the cold compress bag 1 to enter the accommodating cavity 81 through the water outlet hole 1014 .

[0096] In some embodiments, Fig.10 As shown, the cold compress machine 2 also includes a filter element 301, which is installed in the main pipeline 2012 to filter impurities, thereby preventing impurities from entering the water inlet and outlet module 92 and the cold compress bag 1, thereby improving the reliability of the operation of the cold compress machine 2, and improving the service life of components of the water inlet and outlet module 92, such as the pump body and the valve body.

[0097] In some embodiments, the pressurizing module 93 includes an air-charging and air-discharging component and an air pressure sensor. The air-charging and air-discharging component is used to inflate the cold compress bag 1 and discharge the gas in the cold compress bag 1, and the air pressure sensor is used to sense the air pressure in the cold compress bag 1. It should be understood that, through the cooperation of the air-charging and air-discharging component and the air pressure sensor, the cold compress bag 1 can generate intermittent pressure to act on the limbs to simulate the blood vessel pressure during natural movement. For example, under the condition that the cold compress bag 1 is tied to the patient's calf, the intermittent pressure generated by the cold compress bag 1 can simulate the blood vessel pressure during natural walking, which is beneficial for massaging muscles and preventing venous thrombosis. It is worth mentioning that the pressure in the cold compress bag 1 can be sensed by the air pressure sensor, and then the pressure can be more accurately controlled by adjusting the work of the air-charging and air-discharging component, which is beneficial to avoid ischemia and hypoxia caused by excessive pressure, and to avoid the inability to achieve a therapeutic effect due to too low pressure.

[0098] In at least one embodiment, the pressurizing module 93 is capable of controlling the pressure to be between 35 mmHg and 40 mmHg.

[0099] In at least one embodiment, the inflation and deflation assembly includes an air pump and a solenoid valve. The air pump is capable of inflating air into the cold compress bag 1. The solenoid valve is capable of discharging the gas in the cold compress bag 1.

[0100] In some embodiments, the water inlet and outlet module 92 includes a water pump and a valve body, and the water pump can circulate the liquid between the cold compress machine 2 and the cold compress bag 1. The valve body can block the water inlet of the cold compress bag 1, so that the water pump extracts the liquid in the cold compress bag 1, so that the cold compress machine 2 works in the drainage mode, that is, the water inlet and outlet module 92 can drain the liquid in the cold compress bag 1 by extraction. It should be understood that the liquid in the cold compress bag 1 can also be drained by other methods, and the present application does not make specific restrictions on this.

[0101] In some embodiments, Fig.10As shown, the box body 80 includes an outer shell 82 and an inner shell 83, and the outer shell 82 is sleeved on the outer periphery of the inner shell 83, defining a space 84 between the outer shell 82 and the inner shell 83. It should be understood that the outer shell 82 and the inner shell 83 arranged at intervals can play a role of heat insulation, which is conducive to reducing the heat exchange between the ice-water mixture in the box body 80 and the outside, thereby allowing the ice-water mixture in the box body 80 to be maintained in the range of ice-water ratio of 1:1.4 to 1:2.5 for a long time.

[0102] In at least one embodiment, Fig.10 and Fig.12 As shown, the space gap 84 is evacuated. In at least one other embodiment, the space gap 84 is filled with an inert gas, or air, or gel, etc., which is not specifically limited in the present application.

[0103] In some embodiments, the outer shell 82 and the inner shell 83 of the box 80 are made of transparent materials, and the cold compress machine 2 also includes a lighting lamp 302 to illuminate the accommodating cavity 81 of the box 80, so as to observe the condition of the ice-water mixture in the box 80 in a darker environment.

[0104] In at least one embodiment, the lighting lamp 302 can change color according to different working modes, so that the user can quickly distinguish the working mode of the cold compress machine 2.

[0105] In some embodiments, Figure 8-Figure 11 As shown, the cold compress machine 2 also includes a handle 303, which is rotatably connected to the box body 80 or the box cover 90 to facilitate moving and carrying the cold compress machine 2.

[0106] The above describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A cold compress bag, characterized in that: include: a first surface layer, a middle layer, and a second surface layer, wherein a liquid storage space is defined between the first surface layer and the middle layer, and an air storage space is defined between the second surface layer and the middle layer, and the air storage space has a vent, and the vent is connected to the air storage space and the outside; A partition member, wherein the partition member is capable of connecting the first surface layer and the middle layer so as to separate the liquid storage space into a connected water inlet area and a water outlet area, wherein the water inlet area has a water inlet, and the water inlet is capable of connecting the water inlet area with the outside world, and the water outlet area has a water outlet, and the water outlet is capable of connecting the water outlet area with the outside world.

2. The cold compress pack according to claim 1, characterized in that: The cold compress bag further comprises a plurality of guide parts, which are configured to connect the second surface layer and the middle layer so as to separate the air storage space into a first clamping area, a holding area and a second clamping area that are connected along a first direction.

3. The cold compress pack according to claim 2, characterized in that: The guide portion is connected to the first surface layer and the middle layer, the guide portion is spaced apart from the outer edge of the cold compress bag to define an outer channel between the guide portion and the outer edge of the cold compress bag, and the guide portion is spaced apart from the partition piece to define an inner channel between the guide portion and the partition piece.

4. The cold compress pack according to claim 1, characterized in that: The partition member includes a main partition portion and a secondary partition portion, the main partition portion enables the liquid storage space to be divided into the water inlet area and the water outlet area along the second direction, the secondary partition portion is connected to the main partition portion, and the extension direction of the secondary partition portion is arranged at an angle with the extension direction of the main partition portion to define a transition channel on the side away from the water inlet and the water outlet, and the transition channel enables the water inlet area and the water outlet area to be connected.

5. The cold compress pack according to claim 4, characterized in that: The main partition portion includes a first section, a transition section and a second section. The first section and the second section are staggered along the second direction. The transition section is bent and extended to connect the first section and the second section, so that from the side close to the water inlet along the first direction to the side away from the water inlet, the width of at least part of the water inlet area along the second direction gradually increases.

6. The cold compress pack according to claim 4, characterized in that: The secondary partition portion is bent and extends along the second direction, and the center of curvature of the secondary partition portion is located on a side facing the water inlet and the water outlet.

7. The cold compress pack according to any one of claims 2 or 3, characterized in that: The guide portion includes a first guide portion and a second guide portion, the first guide portion and the second guide portion are both bent and extended along a second direction, the centers of curvature of the first guide portion and the second guide portion are both located on the side facing the water inlet and the water outlet, the first guide portion is arranged closer to the water inlet and the water outlet than the second guide portion, and the length of the first guide portion is greater than the length of the second guide portion.

8. The cold compress pack according to any one of claims 1 to 6, characterized in that: The cold compress bag also includes a plurality of diversion parts, at least some of which are arranged in an array so as to divert the liquid in the liquid storage space.

9. The cold compress pack according to any one of claims 1 to 6, characterized in that: The outer edge of the cold compress bag includes a plurality of smoothly connected arc segments, which can guide the flow direction of the liquid in the liquid storage space. The arc segments include a concave segment, which is concavely curved toward the center of the cold compress bag. When the cold compress bag is tied to a limb, the concave segment can avoid the joints.

10. A cold compress system, characterized in that: include: A cold pack as described in any one of claims 1 to 9; A cold compress machine, the cold compress machine comprises a box body, the box body has a accommodating cavity for containing liquid; a box cover, the box cover is suitable for covering the top of the box body, the box cover comprises a cover body, an inlet and outlet module, a pressurizing module and a control module, the cover body has an accommodating space for accommodating the inlet and outlet module, the pressurizing module and the control module; the inlet and outlet module is capable of allowing liquid to circulate between the box body and the cold compress bag so that the cold compress machine works in a cold therapy mode, and the inlet and outlet module is capable of discharging liquid in the cold compress bag so that the cold compress machine works in a draining mode; the pressurizing module is capable of inflating air into the cold compress bag so that the cold compress machine works in a pressurizing mode; the control module is capable of controlling the inlet and outlet module and the pressurizing module so that the cold compress machine works in at least one of the pressurizing mode, the cold therapy mode and the draining mode; a water diversion structure, the water diversion structure extends from the cover body to the bottom of the box body, and the water diversion structure is capable of connecting the accommodating cavity and the inlet and outlet module.

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