Multifunctional hand air pressure device

Abstract

The invention relates to the technical field of medical rehabilitation, and provides a multifunctional hand air pressure device which comprises a pressure control system connected with an air source and used for accurately regulating and controlling the magnitude, frequency and mode of output air pressure; the hand air bag assembly is connected with the pressure control system through a connecting pipeline and comprises finger air bags, a palm air bag and a wrist air bag, the finger air bags, the palm air bag and the wrist air bag all adopt arc-shaped structures matched with the physiological curve of the hand and are matched with the bending and stretching actions of the hand, and the finger air bags are provided with four independent air bags of the palm side face, the back side face, the ulnar side and the radial side for each finger; the palm air bag is divided into a palm area air bag and a hand back area air bag, and the wrist air bag is divided into a palm flexion side air bag and a back extension side air bag. Through the multi-area and multi-direction air bag design according to the anatomical relation of the hand, precise pressure treatment can be carried out according to the physiological structures and functional characteristics of different parts of the hand, and the effects of promoting venous return, lymphatic return, muscle relaxation, muscular tension relief and joint motion degree improvement are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical rehabilitation, and particularly to a multifunctional hand air pressure device. Background Art

[0002] In the field of medical rehabilitation, hand rehabilitation treatment plays a crucial role in the recovery from numerous diseases and injuries. Conditions such as after hand fracture surgery, hand nerve injury, and rheumatoid arthritis involving hand joints all require promoting hand venous return and lymphatic return to reduce swelling, relieve muscle tension and abnormal muscle tone, and improve joint range of motion, thereby enhancing the recovery effect of hand function.

[0003] However, existing hand treatment devices have many drawbacks: some devices can only perform single - direction or simple overall pressurization, and it is difficult to carry out precise pressure treatment according to the complex anatomical structures of fingers, palms, and wrists; the airbag designs of some devices do not fully consider the flexion and extension movements of the hand, and cannot well conform to the physiological curves of the hand in different postures during use, resulting in a significant reduction in the treatment effect; moreover, there is a lack of efficient air pressure treatment devices designed for the fine anatomical partitions of each part of the hand on the market. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a multifunctional hand air pressure device, which can perform precise multi - direction and multi - region air pressure treatment on fingers, palms, and wrists according to the anatomical relationship of the hand, effectively promoting venous return and lymphatic return, relaxing muscles, relieving muscle tension, and improving joint range of motion. At the same time, the device can adapt to the flexion and extension movements of the hand, significantly improving the treatment effect and the comfort of patients during use.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A multifunctional hand air pressure device, comprising:

[0006] An air source for providing compressed air;

[0007] A pressure control system connected to the air source for precisely regulating the magnitude, frequency, and mode of the output air pressure;

[0008] A hand airbag assembly connected to the pressure control system through a connecting pipeline, including finger airbags, palm airbags, and wrist airbags, all of which adopt an arc structure matching the hand physiological curve and are adapted to the flexion and extension movements of the hand. Each finger airbag is provided with four independent airbags on the palmar side, dorsal side, ulnar side, and radial side, the palm airbag is divided into a palm - center area airbag and a dorsal - hand area airbag, and the wrist airbag is divided into a palmar - flexion side airbag and a dorsal - extension side airbag.

[0009] Preferably, the pressure control system includes:

[0010] An intelligent algorithm module, which is used to automatically generate an initial air pressure value according to patient data. The initial air pressure range is 5 - 15 mmHg, and the air pressure is dynamically adjusted according to real-time sensor feedback;

[0011] A pressure sensor, a temperature sensor and an electromyogram sensor, which respectively monitor the airbag pressure, the hand skin temperature and the electromyogram;

[0012] A feedback regulation module, which automatically balances the air pressure of each airbag when it detects that the local pressure exceeds the preset threshold or the temperature is abnormal.

[0013] Preferably, the pressure rising rate of the pressure control system is in a linear or non-linear mode. In the linear mode, the pressure increases at a rate of 1 - 3 mmHg / s. In the non-linear mode, the rate in the initial stage is ≤1 mmHg / s, and the rate in the later stage is increased to 2 - 5 mmHg / s.

[0014] Preferably, the connecting pipeline adopts a multi-channel independent air supply design. Each finger airbag corresponds to an independent air passage, the inner diameter of the air passage is 2 - 4 mm, and the air pressure distribution is controlled by a flow control valve between the air passages.

[0015] Preferably, the depression depth of the airbag in the palm area is 3 - 5 mm, and the arc curvature radius of the airbag in the back of the hand area is consistent with the physiological curvature of the back of the hand, and the range is 50 - 80 mm.

[0016] Preferably, the inflation pressure difference between the palmar flexion side airbag and the dorsal extension side airbag of the wrist airbag is 5 - 10 mmHg, which is used to simulate the flexion and extension movement of the wrist joint.

[0017] Preferably, the material of the hand airbag assembly is medical-grade silica gel, the thickness is 1.5 - 2.5 mm, the tensile strength ≥8 MPa, and the air permeability ≥200 cm 3 / (cm 2 ·s).

[0018] Preferably, the device further includes an operation interface, and the operation interface integrates a graphical mode switching button, a real-time parameter display module and a password locking function for switching the treatment mode.

[0019] Preferably, the treatment modes include:

[0020] Intermittent mode: The ratio of the inflation time to the deflation time is 1:2, and the single cycle duration is 30 seconds;

[0021] Continuous mode: The air pressure is stable within the range of 10 - 25 mmHg;

[0022] Customized mode: It is divided into the initial stage, the middle stage, and the late stage according to the healing stage of hand fractures. The pressure parameters in the late stage are set as follows: pressure ≥ 20 mmHg, interval ≤ 15 seconds. The parameters in the middle stage are set as: pressure 15 - 20 mmHg, interval 30 seconds. The parameters in the initial stage are set as: pressure ≤ 10 mmHg, interval ≥ 60 seconds.

[0023] Preferably, the inflation pressure of the airbag satisfies the following formula:

[0024] P = P0 + k·Δt

[0025] Wherein, P0 is the initial pressure, k is the pressure rising coefficient, Δt is the treatment time, and the pressure rising coefficient is 0.5 - 1.5 mmHg / s.

[0026] Working principle:

[0027] The air source of the device uses a micro electric air pump, and the piston is driven by a high-speed motor to compress air to generate a stable compressed air flow. The output pressure range of the air source is 5 - 30 mmHg, and the air supply volume can be dynamically adjusted according to the treatment requirements. The compressed air is transmitted to the hand airbag assembly through the multi-channel independent airways of the connecting pipeline to ensure the independent and controllable air supply of each area airbag.

[0028] The core of the pressure control system is the intelligent algorithm module, and its working process is as follows:

[0029] Initial setting: Automatically generate the initial pressure (P0 = 5 - 15 mmHg) according to the patient information (such as injury type, rehabilitation stage) and dynamically adjust the pressure through the formula P = P0 + k·Δt, where k is the pressure rising coefficient (0.5 - 1.5 mmHg / s), and Δt is the treatment time.

[0030] Real-time monitoring: The pressure sensor monitors the pressure distribution in the airbag, the temperature sensor (23) detects the hand skin temperature, and the muscle electrical signal sensor captures the muscle electrical activity.

[0031] Feedback regulation: If the local pressure exceeds the threshold (≥ 20 mmHg) or the temperature rises abnormally (ΔT ≥ 2 °C), the feedback regulation module immediately reduces the corresponding airbag pressure and redistributes the air pressure through the flow dividing valve to ensure pressure balance.

[0032] Finger airbag: The airbags in four directions are inflated independently, and the finger flexion and extension movements are simulated by alternating pressurization to promote joint activity.

[0033] Palm airbag: The airbag in the palm area fits the palm with a depression depth of 3 - 5 mm, and the airbag in the back of the hand area covers the blood vessels on the back of the hand with a curvature radius of 50 - 80 mm, promoting lymphatic return when squeezing.

[0034] Wrist airbag: The palmar flexion side airbag and the dorsal extension side airbag are alternately inflated with a pressure difference of 5-10 mmHg to assist in wrist joint flexion and extension training.

[0035] The arc design of all airbags enables them to remain closely attached during hand flexion and extension, avoiding pressure concentration or deviation.

[0036] Intermittent mode: Each 30 seconds is a cycle, promoting venous return through periodic squeezing - relaxation.

[0037] Continuous mode: Maintain a constant pressure of 10-25 mmHg to continuously inhibit muscle tension.

[0038] Custom mode: Adjust parameters according to the fracture healing stage

[0039] Initial stage: P≤10 mmHg, interval≥60 seconds;

[0040] Later stage: P≥20 mmHg, interval≤15 seconds.

[0041] The operation interface switches modes with a single click through graphical buttons, and real-time displays pressure, temperature, and remaining treatment time. The password locking function prevents misoperation. After the treatment ends, the airbag deflates slowly to avoid discomfort caused by a sudden drop in pressure.

[0042] The present invention provides a multifunctional hand pneumatic device. It has the following beneficial effects:

[0043] 1. Through the multi-region and multi-direction airbag design based on the hand's anatomical relationship, the present invention can carry out precise pressure treatment for the physiological structures and functional characteristics of different parts of the hand, significantly enhancing the effects of promoting venous return, lymphatic return, muscle relaxation, muscle tension relief, and joint range of motion improvement, which is of great significance for the recovery of complex hand function disorders.

[0044] 2. The arc design of the airbag of the present invention enables it to well adapt to the flexion and extension movements of the hand, maintain good fit and treatment effect in various hand postures, improve the comfort of patients during use, reduce treatment interruption or discomfort caused by the mismatch between the device and hand movements, and is conducive to patients' long-term adherence to treatment, thus enhancing the overall rehabilitation treatment effect.

[0045] 3. The device of the present invention integrates multiple treatment functions, can flexibly adjust pressure parameters, treatment modes, and airbag combination methods according to the conditions and rehabilitation needs of different patients, realizes personalized hand rehabilitation treatment plans, reduces the inconvenience and cost of patients using multiple single-function treatment devices, and improves the utilization efficiency of medical resources.

[0046] 4. The innovation of the air pressure adjustment method and treatment mode switching method of the present invention makes the treatment process more intelligent and precise. The intelligent air pressure adjustment can respond to the physiological changes of the patient's hand in real time, ensuring the safety and effectiveness of treatment; the rich and diverse treatment modes that are easy to switch meet the needs of different diseases and rehabilitation stages, further improving the treatment effect and patient satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic structural diagram of the back of the hand part of the present invention;

[0048] Figure 2 It is a schematic structural diagram of the palm part of the present invention.

[0049] Among them, 1. Wrist airbag; 101. Dorsiflexion side airbag; 102. Palmar flexion side airbag; 2. Palm airbag; 201. Back of hand area airbag; 202. Palm area airbag; 3. Finger airbag. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] Embodiment:

[0052] Please refer to the attached Figure 1 -attached Figure 2 , the embodiment of the present invention provides a multifunctional hand air pressure device, including:

[0053] An air source for providing compressed air; and is connected to a pressure control system for precisely regulating the magnitude, frequency and mode of the output air pressure, and the pressure rising rate is in a linear or non-linear mode. In the linear mode, the pressure increases at a rate of 1-3 mmHg / s, and in the non-linear mode, the rate in the initial stage is ≤1 mmHg / s, and the rate in the later stage is increased to 2-5 mmHg / s. Among them, the pressure control system includes:

[0054] An intelligent algorithm module for automatically generating an initial air pressure value according to patient data, and the initial air pressure range is 5-15 mmHg, and dynamically adjusting the air pressure according to the real-time sensor feedback;

[0055] A pressure sensor, a temperature sensor and an electromyogram signal sensor for respectively monitoring the airbag pressure, the hand skin temperature and the electromyogram signal;

[0056] A feedback adjustment module for automatically equalizing the airbag pressures when it detects that the local pressure exceeds the preset threshold or the temperature is abnormal;

[0057] The hand airbag assembly made of medical-grade silicone has a thickness of 1.5 - 2.5 mm, a tensile strength of ≥ 8 MPa, and an air permeability of ≥ 200 cm 3 / (cm 2 ·s). It is connected to the pressure control system through a connecting pipeline with a multi-channel independent air supply design. It includes finger airbags 3, palm airbag 2, and wrist airbag 1, and all adopt an arc structure matching the hand physiological curve and are adapted to the flexion and extension movements of the hand;

[0058] For each finger, the finger airbag 3 is provided with four independent airbags on the palmar side, dorsal side, ulnar side, and radial side. Each finger airbag 3 corresponds to an independent air passage with an inner diameter of 2 - 4 mm, and the air pressure distribution between the air passages is controlled by a shunt valve;

[0059] The palm airbag 2 is divided into a palm center area airbag 202 and a dorsal hand area airbag 201. The depression depth of the palm center area airbag 202 is 3 - 5 mm, and the arc curvature radius of the dorsal hand area airbag 201 is consistent with the physiological curvature of the dorsal hand, ranging from 50 - 80 mm;

[0060] The wrist airbag 1 is divided into a palmar flexion side airbag 102 and a dorsal extension side airbag 101. The inflation pressure difference between the palmar flexion side airbag 102 and the dorsal extension side airbag 101 is 5 - 10 mmHg, which is used to simulate the flexion and extension movement of the wrist joint.

[0061] The operation interface integrates a graphical mode switching button, a real-time parameter display module, and a password locking function for switching the treatment mode. The treatment modes include:

[0062] Intermittent mode: The ratio of inflation time to deflation time is 1:2, and the single-cycle duration is 30 seconds;

[0063] Continuous mode: The air pressure is stable within the range of 10 - 25 mmHg;

[0064] Customized mode: According to the healing stages of hand fractures, it is divided into the initial stage, middle stage, and late stage. The pressure parameters in the late stage are set as: pressure ≥ 20 mmHg, interval ≤ 15 seconds. The parameters in the middle stage are set as: pressure 15 - 20 mmHg, interval 30 seconds. The parameters in the initial stage are set as: pressure ≤ 10 mmHg, interval ≥ 60 seconds.

[0065] The airbag inflation pressure satisfies the following formula:

[0066] P = P0 + k·Δt

[0067] Wherein, P0 is the initial pressure, k is the pressure rise coefficient, Δt is the treatment time, and the pressure rise coefficient is 0.5 - 1.5 mmHg / s.

[0068] The following is introduced in combination with specific embodiments:

[0069] Example 1

[0070] Gas source installation: Select a micro electric air pump with an output pressure range of 5 - 30 mmHg and a power of 50 W as the gas source, and connect it to the main air inlet of the pressure control system through a quick connector.

[0071] Integrate the intelligent algorithm module with the pressure sensor, temperature sensor, and electromyogram sensor, and connect them to the operation interface through a data cable.

[0072] Set the initial parameters: The pressure rise coefficient k = 1 mmHg / s, the temperature threshold Δt ≤ 2 °C, and the maximum pressure threshold 20 mmHg.

[0073] The connecting pipeline adopts a four-channel independent airway design with an inner diameter of 3 mm, and is respectively connected to the finger airbag 3, palm airbag 2, and wrist airbag 1.

[0074] Check the airtightness of each pipeline to ensure that the leakage rate ≤ 0.5 mmHg / min.

[0075] Place the simulated hand model in the airbag assembly, start the pressure control system, and inflate the palmar, dorsal, ulnar, and radial airbags of each finger to 10 mmHg in sequence, and observe the airbag fitting degree.

[0076] Verify that the airbag can still fit evenly with a pressure fluctuation ≤ 2 mmHg when the finger is flexed at 30°.

[0077] Set the pressure of the palmar flexion side airbag 102 to 12 mmHg and the pressure of the dorsal extension side airbag 101 to 7 mmHg, and simulate the flexion and extension movement of the wrist joint at 0° - 60°.

[0078] Confirm that an airbag pressure difference of 5 mmHg can assist joint movement without local compression.

[0079] Example 2

[0080] Patient condition: Male, 35 years old, 4 weeks after right metacarpal fracture surgery, with mild hand swelling and limited joint movement.

[0081] Mode selection: Select the "Fracture Rehabilitation Customized Mode" through the operation interface, and the system automatically sets the parameters:

[0082] Initial stage 0 - 2 weeks: Pressure ≤ 10 mmHg, inflation interval 60 seconds;

[0083] Middle stage 3 - 6 weeks: Pressure 15 - 20 mmHg, inflation interval 30 seconds;

[0084] Late stage 7 - 12 weeks: Pressure ≥ 20 mmHg, inflation interval 15 seconds.

[0085] Wearing device: The patient puts the right hand into the hand airbag assembly and adjusts the fixing strap to ensure that the fingers, palm, and wrist respectively correspond to the airbag partitions.

[0086] Start the treatment. The system automatically loads parameters according to the middle stage of the preset phase: the initial pressure P0 = 15 mmHg, and the pressure rising rate k = 1 mmHg / s.

[0087] The airbags are inflated in sequence:

[0088] Finger airbag 3: The palm-side airbag is inflated to 15 mmHg, and after maintaining for 10 seconds, it switches to inflating the back-side airbag;

[0089] Palm airbag 2: The airbag 202 in the palm area is inflated to 12 mmHg, and the airbag 201 in the back of the hand area is inflated to 10 mmHg;

[0090] Wrist airbag 1: The palm-flexion side airbag 102 and the dorsal-extension side airbag 101 are alternately inflated with a pressure difference of 5 mmHg.

[0091] During this period, when the pressure sensor detects that the pressure in the palm area reaches 18 mmHg, which is close to the threshold, the feedback adjustment module automatically reduces the pressure in this area to 15 mmHg and increases the pressure in the back of the hand area to 12 mmHg to maintain the overall pressure balance. The temperature sensor shows that the temperature in the back of the hand rises by 1.5 °C within the normal range, and no alarm is triggered.

[0092] The system ends the treatment according to the set time of 30 minutes, and the airbags deflate slowly at a rate of 2 mmHg / s.

[0093] The patient's hand has no numbness or pain, and the joint range of motion has increased by 15% compared with before the treatment.

[0094] Example three,

[0095] Mode selection: Intermittent pneumatic mode, inflate for 10 seconds / deflate for 20 seconds, cycle of 30 seconds, with the goal of reducing joint swelling.

[0096] Pressure parameters: Initial pressure 8 mmHg, peak pressure 15 mmHg.

[0097] The back of the finger airbag and the dorsal-extension side airbag of the wrist are simultaneously inflated to 15 mmHg and maintained for 10 seconds to promote the centripetal return of lymph fluid.

[0098] During the deflation stage, the airbag pressure drops to 0 mmHg, and the hand tissue relaxes naturally.

[0099] After 30 minutes of treatment, the measurement of the hand circumference shows that the swelling has decreased by 3 mm. The ultrasonic detection confirms that the lymph return speed has increased by 20%, and the patient feedback shows that the joint stiffness has been significantly relieved.

[0100] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional hand air pressure device, characterized in that, Comprising: An air source for providing compressed air; A pressure control system connected to the air source for precisely regulating the magnitude, frequency, and mode of the output air pressure; A hand airbag assembly connected to the pressure control system through a connecting pipeline, including finger airbags (3), palm airbags (2), and wrist airbags (1), all of which adopt an arc-shaped structure matching the hand physiological curve and are adapted to the flexion and extension movements of the hand. The finger airbag (3) is provided with four independent airbags on the palmar side, dorsal side, ulnar side, and radial side for each finger. The palm airbag (2) is divided into a palm center area airbag (202) and a dorsal area airbag (201). The wrist airbag (1) is divided into a palmar flexion side airbag (102) and a dorsal extension side airbag (101).

2. The multifunctional hand air pressure device according to claim 1, wherein The pressure control system includes: An intelligent algorithm module for automatically generating an initial air pressure value according to patient data, with the initial air pressure range being 5 - 15 mmHg, and dynamically adjusting the air pressure according to real-time sensor feedback; A pressure sensor, a temperature sensor, and a muscle electrical signal sensor for monitoring the airbag pressure, hand skin temperature, and muscle electrical signals respectively; A feedback adjustment module for automatically equalizing the airbag pressures when it detects that the local pressure exceeds the preset threshold or the temperature is abnormal.

3. The multifunctional hand air pressure device according to claim 2, characterized in that, The pressure rising rate of the pressure control system is in a linear or non-linear mode. In the linear mode, the pressure increases at a rate of 1 - 3 mmHg / s, and in the non-linear mode, the rate in the initial stage is ≤ 1 mmHg / s, and the rate in the later stage increases to 2 - 5 mmHg / s.

4. A multifunctional hand pneumatic device according to claim 1, characterized in that, The connecting pipeline adopts a multi-channel independent air supply design. Each finger airbag (3) corresponds to an independent air passage, and the inner diameter of the air passage is 2 - 4 mm. The air pressure distribution between the air passages is controlled by a shunt valve.

5. A multifunctional hand air pressure device according to claim 1, characterized in that, The depression depth of the palm center area airbag (202) is 3 - 5 mm, and the arc curvature radius of the dorsal area airbag (201) is consistent with the dorsal physiological curvature of the hand, with a range of 50 - 80 mm.

6. The multifunctional hand air pressure device according to claim 1, wherein, The inflation pressure difference between the palmar flexion side airbag (102) and the dorsal extension side airbag (101) of the wrist airbag (1) is 5 - 10 mmHg, which is used to simulate the flexion and extension movements of the wrist joint.

7. A multifunctional hand air pressure device according to claim 1, characterized in that, The material of the hand airbag assembly is medical-grade silica gel, with a thickness of 1.5 to 2.5 mm, a tensile strength of ≥8 MPa, and an air permeability of ≥200 cm 3 / (cm 2 ·s).

8. A multifunctional hand air pressure device according to claim 1, characterized in that, The device further includes an operation interface, which integrates a graphical mode switching button, a real-time parameter display module, and a password locking function for switching the treatment mode.

9. The multifunctional hand air pressure device according to claim 8, characterized in that, The treatment modes include: Intermittent mode: The ratio of the inflation time to the deflation time is 1:2, and the single cycle duration is 30 seconds; Continuous mode: The air pressure is stable within the range of 10 - 25 mmHg; Customized mode: According to the hand fracture healing stage, it is divided into the initial stage, middle stage, and later stage. The pressure parameters for the later stage are set as: the pressure ≥ 20 mmHg, the interval ≤ 15 seconds. The parameters for the middle stage are set as: the pressure is 15 - 20 mmHg, the interval is 30 seconds. The parameters for the initial stage are set as: the pressure ≤ 10 mmHg, the interval ≥ 60 seconds.

10. A multifunctional hand air pressure device according to claim 1, characterized in that, The airbag inflation pressure satisfies the following formula: P = P0 + k·Δt Wherein, P0 is the initial pressure, k is the pressure rising coefficient, Δt is the treatment time, and the pressure rising coefficient is 0.5 - 1.5 mmHg / s.

Images