A smart wearable external fixator made of thermal responsive hydrogel material

Abstract

The present invention discloses an intelligent wearable external fixator made of a thermally responsive hydrogel material, which relates to the technical field of orthopedic medical devices. A first fixing member is arranged on the inner side of the elastic outer lining, and the first fixing member includes a plurality of lining bags arranged on the outer surface of the elastic outer lining, and a thermally responsive antibacterial hydrogel substrate arranged in the lining bag. A photoelectric sensor is installed on the side surface of the lining bag away from the elastic outer lining, and a microcomputer chip and a sponge heating electrode are installed in the lining bag. The present invention adjusts the fixing part elastically through an external fixator to avoid continuous pressure on the injured area tissue, avoid obstruction of venous return at the distal end of the fixed part and extracellular fluid exudation, achieve the purpose of slowing down the swelling of muscle soft tissue, reduce the compression of arterial blood vessels, and avoid the pressure in the tissue gap exceeding the perfusion pressure, thereby blocking the microcirculation of tissues in the fascial chamber and causing the problem of the contents of the fascial chamber.

Description

Technical Field

[0001] The present invention relates to the technical field of orthopedic medical devices, and in particular to an intelligent wearable external fixator made of a thermal responsive hydrogel material. Background Art

[0002] Traditional external fixators are mainly made of materials such as plaster or resin. When fractures occur in limbs or pelvis and other parts of the trunk, external fixation of the injured limb is often performed to facilitate the transportation of the injured or assist in treatment. External fixation is an external device that keeps the affected limb in the position required for treatment, such as maintaining a certain position after fracture, dislocation reduction or certain limb orthopedic surgery to facilitate the repair of fractures and other soft tissues.

[0003] However, when severe trauma occurs in muscle-rich areas such as the forearm and calf, the muscle and soft tissues in the injured area swell due to edema, and it is difficult for general external fixators to adjust the elasticity of the fixation site, resulting in continuous compression of the tissues in the injured area. In severe cases, the distal venous return of the fixation site is obstructed, and extracellular fluid exudation occurs, aggravating the swelling of the muscle and soft tissues. This vicious cycle is repeated, eventually leading to compression of the arteries, and the pressure in the tissue gap exceeds the perfusion pressure, blocking the microcirculation of the tissues in the fascial compartment, causing the contents of the fascial compartment, such as muscles and nerves, to undergo progressive ischemic necrosis and form compartment syndrome, ultimately causing irreversible damage to the injured area or even amputation and disability. In severe cases, it causes renal failure or other organ dysfunction and endangers the life of the injured. Summary of the invention

[0004] The present invention aims at the deficiencies of the prior art and provides the following technical solutions: an intelligent wearable external fixator made of a thermal responsive hydrogel material, comprising an elastic outer liner, a first fixing piece is arranged on the inner side of the elastic outer liner, and a second fixing piece for fixing and strengthening is arranged on the outer side of the elastic outer liner;

[0005] The first fixing member includes a plurality of lining bags arranged on the outer surface of the elastic outer lining, and a thermally responsive antibacterial hydrogel substrate arranged in the lining bags, a photoelectric sensor is installed on the side surface of the lining bags away from the elastic outer lining, a microcomputer chip and a sponge heating electrode are installed in the lining bags, the sponge heating electrode is arranged on the side surface of the antibacterial hydrogel substrate close to the photoelectric sensor, and the sponge heating electrode and the photoelectric sensor are electrically connected to the microcomputer chip through wires.

[0006] As an improvement of the above technical solution, the surfaces of the elastic outer lining and the inner lining bag at corresponding positions are sewn with hook and barb tapes of the first Velcro respectively, and the inner lining bag is bonded and fixed to the elastic outer lining by the first Velcro.

[0007] As an improvement of the above technical solution, the second fixing member includes a plurality of outer pockets arranged on the outer surface of the elastic outer lining for storing the low-temperature thermoplastic substrate.

[0008] As an improvement of the above technical solution, the surfaces of the elastic outer lining and the outer pocket at corresponding positions are sewn with hook and barb tapes of a second Velcro respectively, and the microcomputer chip is bonded and fixed to the elastic outer lining through the second Velcro.

[0009] As an improvement of the above technical solution, a ventilation mechanism for ventilation is further provided in the holes opened on the surface of the elastic outer lining, and the ventilation mechanism is located between two adjacent inner lining bags.

[0010] As an improvement of the above technical solution, the ventilation mechanism includes a guide tube bonded and fixed in a hole opened in the surface of an elastic outer lining, the outer surface of the guide tube is integrally formed with a skirt, and the skirt is bonded to the outer surface of the elastic outer lining, a fan electrically connected to a microcomputer chip is arranged in the skirt, and an air outlet hole for ventilation is opened on the side of the guide tube, and the air outlet hole is located in the elastic outer lining.

[0011] As an improvement of the above technical solution, a protective net is installed at the air inlet end of the guide pipe, an arc-shaped guide plate is arranged at one end of the guide pipe away from the air inlet end, and the annular array of air outlet holes is outside the arc-shaped guide plate.

[0012] As an improvement of the above technical solution, a battery and an air pump are bonded to the outer surface of the elastic outer lining close to the strap, an inflatable airbag is bonded to the inner surface of the elastic outer lining, and the air inlet end of the inflatable airbag is connected to the three-way solenoid valve at the air outlet end of the air pump, a second air permeable groove for ventilation is provided on the surface of the inflatable airbag, and a first air permeable groove for ventilation is provided on the surface of the inner lining bag.

[0013] As an improvement of the above technical solution, the battery is electrically connected to the air pump, the fan, the sponge heating electrode, the microcomputer chip and the liner bag.

[0014] As an improvement of the above technical solution, a strap for binding is sewn on the outer surface of the elastic outer lining, a third Velcro is sewn on the outer surface of one end of the elastic outer lining, and the strap and the third Velcro are bonded and fixed when the elastic outer lining is wrapped around the patient's limbs.

[0015] The beneficial effects of the present invention are as follows: by means of the first fixing member and the second fixing member arranged on the inner side of the elastic outer lining, when the elastic outer lining is tied to the patient's joint sprain, it is fixed separately by the first fixing member, and the second fixing member is used to strengthen the fixation when a fracture occurs, so that the patient's limbs are fixed when the fixator is worn, and the first fixing member is composed of an inner lining bag, a microcomputer chip, a sponge heating electrode and a photoelectric sensor, and the sponge heating electrode and the photoelectric sensor are electrically connected to the microcomputer chip through a wire, and the photoelectric sensor obtains the pressure value in the myofascial compartment by detecting the amount of blood in the myofascial compartment irradiated by the light source, so that the photoelectric sensor continuously detects the pressure in the muscle compartment of the limb, and when the photoelectric sensor detects an increase in the pressure value, the microcomputer chip controls the sponge heating electrode to heat the antibacterial hydrogel substrate, so that the antibacterial hydrogel substrate undergoes a sol-to-fluid transformation and shrinkage, which can increase the gap between the antibacterial hydrogel substrate and the limb skin to play a buffering role, thereby preventing the limb from being continuously compressed and causing fascial compartment syndrome or ischemic necrosis, and when the photoelectric sensor detects a decrease in the pressure value, the microcomputer chip controls the sponge heating electrode to heat the antibacterial hydrogel substrate. Stop heating the antibacterial hydrogel substrate, so that the temperature in the lining bag drops to room temperature or human body temperature, and the antibacterial hydrogel substrate recovers from the sol state to the hydrogel state, expands appropriately and enhances the mechanical support performance, so that the external fixator fits the limbs better and plays a stable external fixation role. At the same time, different lining bag temperatures can be set by controlling the operation of the sponge heating electrodes in different lining bags, thereby controlling the gel-sol state of the antibacterial hydrogel substrates in different lining bags, which can better adapt to different anatomical curvatures of human limbs and make the external fixation more fit. At the same time, the above operations can be performed in sequence through four lining bags, which is equivalent to filling and deflating in sequence, so as to avoid continuous pressure on the skin of the fixed area, resulting in the problem of local skin pressure sores caused by long-term wearing of the external fixator. The elastic adjustment of the fixed part by the external fixator can avoid continuous pressure on the tissue in the injured area, avoid obstruction of venous return at the distal end of the fixed part and extracellular fluid exudation, so as to achieve the purpose of slowing down the swelling of muscle soft tissue, reduce the compression of arterial blood vessels, avoid the pressure in the tissue gap exceeding the perfusion pressure, and block the microcirculation of tissues in the fascial chamber, resulting in problems with the contents of the fascial chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 It is a parts structure diagram of the present invention;

[0018] Figure 3 It is an expanded three-dimensional structure diagram of the present invention;

[0019] Figure 4 It is a three-dimensional structural diagram of the present invention;

[0020] Figure 5It is a structural diagram of the elastic outer lining and the ventilation mechanism in the present invention;

[0021] Figure 6 It is a cross-sectional structural diagram of the elastic outer lining and the ventilation mechanism in the present invention;

[0022] Figure 7 This is a structural diagram of the inner liner bag in the present invention;

[0023] Figure 8 It is a structural block diagram of the present invention.

[0024] Figure numerals: 1. elastic outer lining; 2. inner lining bag; 3. microcomputer chip; 4. sponge heating electrode; 5. photoelectric sensor; 6. outer pocket; 7. first Velcro; 8. second Velcro; 9. first ventilation groove; 10. strap; 11. third Velcro; 12. ventilation mechanism; 121. guide tube; 122. skirt; 123. protective net; 124. fan; 125. air outlet; 13. battery; 14. air pump; 15. inflatable airbag; 16. second ventilation groove. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Embodiment 1

[0026] See also Figure 1-8 As shown, the present invention provides a technical solution: an intelligent wearable external fixator made of a thermal responsive hydrogel material, comprising an elastic outer lining 1, a first fixing piece is arranged on the inner side of the elastic outer lining 1, and a second fixing piece for fixing and strengthening is arranged on the outer side of the elastic outer lining 1;

[0027] The first fixing part includes a plurality of lining bags 2 arranged on the outer surface of the elastic outer lining 1, and a thermally responsive antibacterial hydrogel substrate arranged in the lining bags 2. A photoelectric sensor 5 is installed on the side surface of the lining bags 2 away from the elastic outer lining 1. A microcomputer chip 3 and a sponge heating electrode 4 are installed in the lining bags 2. The sponge heating electrode 4 is arranged on the side surface of the antibacterial hydrogel substrate close to the photoelectric sensor 5, and the sponge heating electrode 4 and the photoelectric sensor 5 are electrically connected to the microcomputer chip 3 through wires.

[0028] The elastic outer lining 1 is made of ballistic nylon material, the inner lining bag 2 is made of polymer silica gel, and the inner lining bag 2 is filled with an antibacterial hydrogel substrate composed of copper-containing polyoxometalate and carboxymethyl chitosan. The hydrogel has thermal responsiveness, and the gel-sol transition temperature is in the range of 50-70°C. It has rapid self-healing properties and is antibacterial, and can be used for a long time or repeatedly.

[0029] In this embodiment, the first fixing member and the second fixing member are arranged on the inner side of the elastic outer lining 1, so that when the elastic outer lining 1 is tied to the patient's joint sprain, it is fixed separately by the first fixing member, and the second fixing member is used to strengthen the fixation when the fracture occurs, so that the patient's limbs are fixed when the fixator is worn. The first fixing member is composed of an inner lining bag 2, a microcomputer chip 3, a sponge heating electrode 4 and a photoelectric sensor 5. The sponge heating electrode 4 and the photoelectric sensor 5 are electrically connected to the microcomputer chip 3 through a wire, and the photoelectric sensor 5 obtains the pressure value in the compartment by detecting the blood volume in the myofascial compartment irradiated by the light source, so that the photoelectric sensor 5 continuously detects the pressure in the muscle compartment of the limb. When the photoelectric sensor 5 detects that the pressure value increases, the microcomputer chip 3 controls the sponge heating electrode 4 to heat the antibacterial hydrogel substrate, so that the antibacterial hydrogel substrate undergoes a sol-to-fluid transformation and retraction, which can increase the gap between the antibacterial hydrogel substrate and the limb skin to play a buffering role, thereby preventing the limb from being continuously compressed and causing fascial compartment syndrome or ischemic necrosis;

[0030] When the photoelectric sensor 5 detects that the pressure value decreases, the microcomputer chip 3 controls the sponge heating electrode 4 to stop heating the antibacterial hydrogel substrate, so that the temperature in the lining bag 2 drops to room temperature or human body temperature, and the antibacterial hydrogel substrate recovers from the sol state to the hydrogel state, expands appropriately and enhances the mechanical support performance, so that the external fixator fits the limbs better and plays a stable external fixation role. At the same time, the temperature of different lining bags 2 can be set by controlling the operation of the sponge heating electrode 4 in different lining bags 2, thereby controlling the gel-sol state of the antibacterial hydrogel substrate in different lining bags 2, which can better adapt to different anatomical curvatures of human limbs and make the external fixation more fit. At the same time, the above operations can be performed in sequence through four lining bags 2, which is equivalent to filling and deflation in sequence, avoiding continuous pressure on the skin of the fixed area, resulting in the problem of pressure sores on the local skin caused by long-term wearing of the external fixator;

[0031] The external fixator is used to adjust the elasticity of the fixation site to avoid continuous pressure on the injured tissue and to avoid extracellular fluid infiltration caused by obstruction of venous return distal to the fixation site, so as to reduce the swelling of muscle soft tissue, relieve the compression of arterial blood vessels, and avoid the pressure in the tissue gap exceeding the perfusion pressure, thereby blocking the microcirculation of the tissues in the fascial chamber and causing problems with the contents of the fascial chamber.

[0032] The antibacterial hydrogel substrate is composed of copper-containing polyoxometalate and carboxymethyl chitosan; the antibacterial hydrogel substrate is a temperature-sensitive hydrogel material with temperature sensitivity: when the temperature is lower than its phase transition temperature, the polymer can be dissolved in water to form a free-flowing liquid; as the temperature rises to above the phase transition temperature, the aqueous solution of the polymer will undergo a phase change to form a non-chemically cross-linked gel; this process is reversible, that is, when the temperature drops, the transition from gel to solution will occur again. Embodiment 2

[0033] See also Figure 1-4 and Figure 6 , Figure 7 As shown, specifically, the surfaces at corresponding positions of the elastic outer lining 1 and the inner lining bag 2 are sewn with the hook and hair bands and the barbed bands of the first Velcro 7 respectively, and the inner lining bag 2 is bonded and fixed to the elastic outer lining 1 through the first Velcro 7 .

[0034] In this embodiment, the surfaces at corresponding positions of the elastic outer lining 1 and the inner lining bag 2 are respectively sewn with the hook and barb tape of the first Velcro 7, so that the inner lining bag 2 is bonded and fixed to the elastic outer lining 1 through the first Velcro 7, which facilitates the inner lining bag 2 to be bonded and fixed to the inner surface of the elastic outer lining 1.

[0035] Specifically, the second fixing member includes a plurality of outer pockets 6 disposed on the outer surface of the elastic outer lining 1 for storing the low-temperature thermoplastic substrate.

[0036] In this embodiment, the second fixing member is composed of a plurality of outer pockets 6, and a low-temperature thermoplastic substrate is arranged in the outer pocket 6, so that the low-temperature thermoplastic substrate supports the external fixator, so that the second fixing member and the first fixing member cooperate to achieve the purpose of stably supporting the external fixator. At the same time, local materials can be used in the outer pocket 6, and hard objects such as wooden strips and iron sheets can be inserted into the outer pocket 6 for support and fixation.

[0037] Low-temperature thermoplastic board is a special synthetic high-molecular polyester, which is a new type of medical material processed by a series of physical and chemical methods and is used for the production of orthopedic external fixation, orthosis and brace. Because this material does not absorb radiation, has good shaping effect after heating and softening, and has a unique shape memory function, it can be reheated, reshaped or locally heated and reshaped when the shaping is not satisfactory, and it is simple to operate and easy to fix. It is the most ideal external fixation material for radiotherapy positioning.

[0038] When a fracture requires strong external fixation, a low-temperature thermoplastic plate can be placed in the outer pocket 6 to solidify and shape it to achieve strong fixation. During pre-hospital emergency treatment, local materials can be used to insert hard objects such as wooden strips and iron sheets into the pocket for support and fixation. The photoelectric sensor 5 can continuously detect the pressure of the intermuscular compartment of the limb and record the movement through a certain algorithm. When the limb continues to swell and the space is limited and squeezed, the photoelectric sensor 5 detects that the pressure of the intermuscular compartment continues to increase rapidly. Even when the pressure increases to a certain value, such as 8.7kpa (65mmHg) for the forearm and 7.3kpa (55mmHg) for the calf, it is shown that there is a high probability of osteofascial compartment syndrome. The microcomputer chip 3 starts the heating electrode response, so that the sponge heating electrode 4 works until the temperature in the inner lining bag 2 rises to more than 50 degrees, and the hydrogel in the inner lining bag 2 undergoes sol transformation into fluid and shrinks, which can increase the gap between the hydrogel and the skin of the limb to play a buffering role, preventing the limb from being continuously compressed and causing fascial compartment syndrome or ischemic necrosis;

[0039] When the swelling of the limb subsides, the photoelectric sensor 5 detects through continuous scanning that the pressure in the myofascial compartment is normal, and when the blood flow is normal, the microcomputer chip 3 stops the sponge heating electrode 4 from responding, so that the temperature inside the lining bag 2 drops to room temperature or human body temperature, and recovers from the sol state to the hydrogel state, expands moderately and enhances the mechanical support performance, so that the external fixator fits the limb better and plays a stable external fixation role.

[0040] Specifically, the surfaces of the elastic outer lining 1 and the outer pocket 6 at corresponding positions are sewn with the hook and hair bands and the barbed bands of the second Velcro 8 , and the microcomputer chip 3 is bonded and fixed to the elastic outer lining 1 through the second Velcro 8 .

[0041] In this embodiment, the surfaces at corresponding positions of the elastic outer lining 1 and the outer pocket 6 are respectively sewn with the hook and barb tape of the second Velcro 8, so that the microcomputer chip 3 is bonded and fixed to the elastic outer lining 1 through the second Velcro 8, making it convenient for the outer pocket 6 to be bonded and fixed to the outer surface of the elastic outer lining 1. Embodiment 3

[0042] See also Figure 1-6 and Figure 8As shown, specifically, a ventilation mechanism 12 for ventilation is provided in the hole opened on the surface of the elastic outer lining 1, and the ventilation mechanism 12 is located between two adjacent liner bags 2, the ventilation mechanism 12 includes a guide tube 121 bonded and fixed in the hole opened on the surface of the elastic outer lining 1, the outer surface of the guide tube 121 is integrally formed with a skirt 122, and the skirt 122 is bonded to the outer surface of the elastic outer lining 1, a fan 124 electrically connected to the microcomputer chip 3 is provided in the skirt 122, an air outlet hole 125 for ventilation is provided on the side of the guide tube 121, and the air outlet hole 125 is located in the elastic outer lining 1, a protective net 123 is installed at the air inlet end of the guide tube 121, an arc-shaped guide plate is provided at the end of the guide tube 121 away from the air inlet end, and the air outlet holes 125 are arranged in a ring array on the outside of the arc-shaped guide plate.

[0043] In this embodiment, a ventilation mechanism 12 for ventilation is provided in the hole on the surface of the elastic outer liner 1, so that the ventilation mechanism 12 can ventilate between two adjacent inner liner bags 2, thereby avoiding the problem of sweating caused by untimely heat dissipation between the external fixator and the skin. The ventilation mechanism 12 is composed of a guide tube 121, a skirt 122, a fan 124 and an air outlet 125. The guide tube 121 is bonded and fixed in the hole on the surface of the elastic outer liner 1, and the skirt 122 is bonded to the surface of the elastic outer liner 1, so that the guide tube 121 and the outer integrally formed skirt 122 are matched. The reliability of bonding with the elastic outer lining 1 is improved, and the fan 124 installed in the guide pipe 121 makes it convenient for the air inside the guide pipe 121 to be blown into the elastic outer lining 1 through the air outlet 125 under the action of the fan 124, thereby increasing the fluidity of the air in the elastic outer lining 1, thereby facilitating the heat dissipation of the external fixer, and the protective net 123 installed at the air inlet end of the guide pipe 121 makes it convenient for the protective net 123 to protect the fan 124, and the arc-shaped guide plate set away from the air inlet end of the guide pipe 121 makes it convenient for the arc-shaped guide plate to guide the air in the guide pipe 121 to the air outlet 125.

[0044] Specifically, a battery 13 and an air pump 14 are bonded to the outer surface of the elastic outer lining 1 close to the strap 10, an inflatable airbag 15 is bonded to the inner surface of the elastic outer lining 1, and the air inlet end of the inflatable airbag 15 is connected to the three-way solenoid valve at the air outlet end of the air pump 14, a second air permeable groove 16 for ventilation is provided on the surface of the inflatable airbag 15, and a first air permeable groove 9 for ventilation is provided on the surface of the inner lining bag 2.

[0045] In this embodiment, the inflatable airbag 15 bonded to the inner surface of the elastic outer lining 1 makes it convenient for the air pump 14 to inflate the inflatable airbag 15 through a three-way solenoid valve installed at the air outlet end. At the same time, the inflatable airbag 15 can also be exhausted through the three-way solenoid valve, which makes it convenient for the inflatable airbag 15 to control the pressure on the limb after the external fixator is installed. The second air permeable groove 16 arranged on the surface of the inflatable airbag 15 and the first air permeable groove 9 arranged on the surface of the inner lining bag 2 increase the air permeability between the inner lining bag 2 and the skin.

[0046] Specifically, the battery 13 is electrically connected to the air pump 14 , the fan 124 , the sponge heating electrode 4 , the microcomputer chip 3 and the liner bag 2 .

[0047] In this embodiment, the battery 13 is convenient for supplying power to the air pump 14 , the fan 124 , the sponge heating electrode 4 , the microcomputer chip 3 and the liner bag 2 .

[0048] Specifically, a binding strap 10 is sewn on the outer surface of the elastic outer lining 1, a third Velcro 11 is sewn on the outer surface of one end of the elastic outer lining 1, and the binding strap 10 and the third Velcro 11 are bonded and fixed when the elastic outer lining 1 is wrapped around the patient's limbs.

[0049] In this embodiment, the binding strap 10 and the third Velcro 11 cooperate to bind the external fixator on the injured limb of the patient.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them.

Claims

1. An intelligent wearable external fixator made of a thermal responsive hydrogel material, comprising an elastic outer lining (1), characterized in that: A first fixing member is arranged on the inner side of the elastic outer lining (1), and a second fixing member for fixing and reinforcing is arranged on the outer side of the elastic outer lining (1); The first fixing member comprises a plurality of lining bags (2) arranged on the outer surface of the elastic outer lining (1), and a heat-responsive antibacterial hydrogel substrate arranged in the lining bags (2); a photoelectric sensor (5) is installed on the side surface of the lining bags (2) away from the elastic outer lining (1); a microcomputer chip (3) and a sponge heating electrode (4) are installed in the lining bags (2); the sponge heating electrode (4) is arranged on the side surface of the antibacterial hydrogel substrate close to the photoelectric sensor (5), and the sponge heating electrode (4) and the photoelectric sensor (5) are electrically connected to the microcomputer chip (3) via a wire; The photoelectric sensor (5) detects the blood volume in the myofascial compartment irradiated by the light source to obtain the pressure value in the compartment, so that the photoelectric sensor (5) continuously detects the pressure in the limb muscle compartment. When the photoelectric sensor (5) detects that the pressure value increases, the microcomputer chip (3) controls the sponge heating electrode (4) to heat the antibacterial hydrogel substrate, so that the antibacterial hydrogel substrate is transformed from sol into fluid and shrinks, thereby increasing the gap between the antibacterial hydrogel substrate and the limb skin and providing buffering. When the photoelectric sensor (5) detects that the pressure value decreases, the microcomputer chip (3) controls the sponge heating electrode (4) to stop heating the antibacterial hydrogel substrate, the temperature inside the lining bag (2) drops to room temperature or human body temperature, and the antibacterial hydrogel substrate recovers from a sol state to a hydrogel state, expands appropriately and enhances the mechanical support performance, so that the external fixator fits the limb better.

2. The intelligent wearable external fixator made of a thermal responsive hydrogel material according to claim 1, characterized in that: The surfaces of the elastic outer lining (1) and the inner lining bag (2) at corresponding positions are respectively sewn with the hook and hair band and the hook and barb band of the first Velcro (7), and the inner lining bag (2) is bonded and fixed to the elastic outer lining (1) via the first Velcro (7).

3. The intelligent wearable external fixator made of a thermal responsive hydrogel material according to claim 1, characterized in that: The second fixing member comprises a plurality of outer pockets (6) arranged on the outer surface of the elastic outer lining (1) for storing the low-temperature thermoplastic substrate.

4. The intelligent wearable external fixator made of a thermal responsive hydrogel material according to claim 3, characterized in that: The surfaces of the elastic outer lining (1) and the outer pocket (6) at corresponding positions are respectively sewn with hook and tang tapes of a second Velcro (8), and the microcomputer chip (3) is bonded and fixed to the elastic outer lining (1) via the second Velcro (8).

5. The intelligent wearable external fixator made of a thermal responsive hydrogel material according to claim 1, characterized in that: A ventilation mechanism (12) for ventilation is also provided in the holes opened on the surface of the elastic outer lining (1), and the ventilation mechanism (12) is located between two adjacent inner lining bags (2).

6. The intelligent wearable external fixator made of a thermal responsive hydrogel material according to claim 5, characterized in that: The ventilation mechanism (12) comprises a guide tube (121) bonded and fixed in a hole formed in the surface of the elastic outer lining (1); the outer surface of the guide tube (121) is integrally formed with a skirt (122), and the skirt (122) is bonded to the outer surface of the elastic outer lining (1); a fan (124) electrically connected to the microcomputer chip (3) is arranged in the skirt (122); and an air outlet hole (125) for ventilation is formed on the side of the guide tube (121), and the air outlet hole (125) is located in the elastic outer lining (1).

7. The intelligent wearable external fixator made of a thermal responsive hydrogel material according to claim 6, characterized in that: The air inlet end of the guide tube (121) is provided with a protective net (123), an end of the guide tube (121) away from the air inlet end is provided with an arc-shaped guide plate, and an annular array of air outlet holes (125) is located outside the arc-shaped guide plate.

8. The intelligent wearable external fixator made of a thermal responsive hydrogel material according to claim 6, characterized in that: The outer surface of the elastic outer lining (1) close to the strap (10) is bonded with a storage battery (13) and an air pump (14), the inner surface of the elastic outer lining (1) is bonded with an inflatable airbag (15), and the air inlet end of the inflatable airbag (15) is connected to the three-way solenoid valve at the air outlet end of the air pump (14), the surface of the inflatable airbag (15) is provided with a second air permeable groove (16) for ventilation, and the surface of the inner lining bag (2) is provided with a first air permeable groove (9) for ventilation.

9. The intelligent wearable external fixator made of a thermal responsive hydrogel material according to claim 8, characterized in that: The storage battery (13) is electrically connected to the air pump (14), the fan (124), the sponge heating electrode (4), the microcomputer chip (3) and the liner bag (2).

10. The intelligent wearable external fixator made of a thermal responsive hydrogel material according to claim 1, characterized in that: The outer surface of the elastic outer lining (1) is sewn with a binding strap (10) for binding, and the outer surface of one end of the elastic outer lining (1) is sewn with a third Velcro (11), and when the elastic outer lining (1) is wrapped around the patient's limbs, the binding strap (10) and the third Velcro (11) are bonded and fixed.

Images