A temperature-controlled hand massager suitable for PICC catheterization patients

Abstract

This invention discloses a temperature-controlled hand massager suitable for patients with PICC (Peripherally Inserted Central Catheter) insertion, belonging to the field of medical and nursing auxiliary device technology. It includes a glove-shaped main body, a massage module, a temperature control module, a power supply module, and a safety protection module. The glove-shaped main body is divided into a palm massage area, a finger massage area, and a wrist fixation area. A PICC catheter avoidance groove is provided in the wrist fixation area, and an elastic protective pad is placed inside the PICC catheter avoidance groove. The massage module includes a miniature air pump, multiple massage airbags, an air duct, and a massage gradient control unit. The multiple massage airbags are respectively located in the palm massage area, finger massage area, and wrist fixation area. The massage airbags are connected to the miniature air pump through the air duct, and the massage gradient control unit is electrically connected to the miniature air pump. Adapting to the special needs of PICC insertion patients, the PICC catheter avoidance groove and elastic protective pad in the wrist fixation area effectively avoid pressure on the insertion site during massage, preventing catheter displacement and bleeding, and ensuring insertion safety.

Description

Technical Field

[0001] This invention relates to the field of medical and nursing assistive device technology, and in particular to a temperature-controlled hand massager suitable for patients with PICC catheters. Background Technology

[0002] Peripherally inserted central catheters (PICCs) are a commonly used intravenous infusion technique in clinical practice, widely used for patients undergoing chemotherapy for cancer and requiring long-term intravenous nutritional support. After PICC placement, patients are prone to problems such as poor blood circulation, numbness, and swelling in the arm on the insertion side. If these problems are not relieved for a long time, they may also increase the risk of complications such as venous thrombosis and catheter blockage.

[0003] Currently, hand care for patients with PICC lines in clinical practice largely relies on manual massage. However, manual massage suffers from uneven pressure, inconsistent frequency, and is time-consuming and laborious. Furthermore, the varying levels of expertise among caregivers can lead to inconsistent massage effectiveness. In addition, conventional hand massage devices do not consider the special needs of PICC line placement, lack catheter avoidance structures, and are prone to compressing the insertion site, potentially causing catheter displacement, bleeding, and other risks. Moreover, they lack temperature control functions, failing to further promote blood circulation through the warming effect, and also lack specific safety protection designs, posing a safety hazard of uncontrolled air pressure and temperature when used by patients independently. Summary of the Invention

[0004] The present invention provides a temperature-controlled hand massager suitable for patients with PICC catheters, aiming to solve the problems of uneven massage intensity, inconsistent frequency, time and effort consumption, easy pressure on the catheter insertion site, risk of catheter displacement and bleeding, inability to further promote blood circulation through the heat effect, and safety hazards of uncontrolled air pressure and temperature.

[0005] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions: A temperature-controlled hand massager suitable for patients with PICC line insertion includes: The glove-shaped main body is specifically divided into a palm massage area, a finger massage area and a wrist fixation area. The wrist fixation area is provided with a PICC catheter avoidance groove, and an elastic protective pad is provided in the PICC catheter avoidance groove. The massage module specifically comprises a miniature air pump, multiple massage airbags, an air duct, and a massage gradient control unit. The multiple massage airbags are respectively disposed in the palm massage area, the finger massage area, and the wrist fixation area. The multiple massage airbags are connected to the miniature air pump through the air duct, and the massage gradient control unit is electrically connected to the miniature air pump. A temperature control module is located in the palm massage area; The power supply module is located in the wrist fixation area; A safety protection module is disposed in the palm massage area, the finger massage area and the wrist fixation area, and is electrically connected to the massage gradient control unit and the temperature control module.

[0006] Furthermore, the massage gradient control unit enables multiple massage airbags to perform gradient pressure application and depressurization actions from the finger massage area to the palm massage area, and then from the palm massage area to the wrist fixation area. The specific formula is as follows:

[0007] in: For the first The actual inflation pressure of each massage airbag, n=1-9; The chip is preset with a base air pressure, which is 70% of the maximum safe inflation pressure for the airbag. (Default) =20kPa; The massage intensity level coefficient is assigned by the chip based on the intensity adjustment button command; The inflation time for the nth airbag increases sequentially in a gradient manner. Basic inflation time, default =1s, which serves as the chip calibration reference; The massage frequency is determined by the inflation and deflation times; the chip switches frequencies by adjusting the total inflation and deflation duration. Gradient logic: chip control. according to The pressure is increased gradually, from the extremities to the wrist, and then released by pressing... The pressure is gradually reduced to simulate the squeezing and reflux action of a manual massage.

[0008] Furthermore, the temperature control module includes a heating element, a temperature sensor, a temperature control switch, and a constant temperature control unit. The heating element is disposed in the palm massage area and its outer surface is covered with heat-insulating non-woven fabric. The temperature sensor has a temperature adjustment range of 35℃-45℃ and an adjustment accuracy of 0.5℃. The constant temperature control unit realizes automatic power-off heat preservation and heat replenishment. The heating element, the temperature sensor, the temperature control switch, and the constant temperature control unit are electrically connected.

[0009] Furthermore, the constant temperature control unit achieves precise temperature control. The temperature is collected in real-time by the temperature control module and the temperature sensor, and compared with a preset temperature. Then, the power supply to the heating element is adjusted using a PID proportional-integral-derivative control formula to achieve precise temperature control without overshoot. The specific formula is as follows:

[0010] The deviation value is:

[0011] Where: is the power supply power output by the chip to the flexible heating sheet, 0 ≤ P ≤ 5W; is the temperature deviation value, which is the difference between the preset temperature of the chip and the temperature actually collected by the temperature sensor; is the proportionality coefficient, default = 0.8; is the integral coefficient, default = 0.2; is the differential coefficient, default = 0.1. These three are the built-in PID calibration parameters of the chip, which are adapted to the thermal characteristics of the graphene heating sheet.

[0012] Furthermore, the power supply module is specifically a lithium battery, which is arranged in the wrist fixing area, the battery capacity ≥ 2000mAh, and is equipped with a Type-C charging interface.

[0013] Furthermore, the safety protection module uses this formula to make real-time judgments on three types of safety signals: pressure, temperature, and current. When the collected value exceeds the preset threshold, it automatically triggers a protection action. The specific formula is:

[0014] Where: is the chip protection action trigger instruction, Y = 0 means normal operation, Y = 1 means triggering protection, and downshift / power off is executed; is the physical quantity collected by the chip in real time, which can be replaced by air pressure P, temperature T, and current I; is the preset safety threshold of the chip.

[0015] Furthermore, an energy-saving module is also included. The energy-saving module realizes the automatic switching of the energy-saving mode and the battery life protection for low battery power. The core is the energy-saving mode trigger module and the low battery life protection module, and the two operate independently and output in a linked manner.

[0016] Furthermore, the specific formula of the energy-saving mode trigger module is:

[0017] Where: is the cumulative time of no operation and no activity, and the chip records the time in real time; is the operation signal, no key operation, and key operation; is the activity signal, no activity of the hand (no signal from the anti-drop sensor), and activity of the hand; is the energy-saving mode instruction. When the chip automatically switches the massage mode to gentle strength + low speed frequency, it is the normal mode.

[0018] Furthermore, the specific formula of the low battery life protection module is:

[0019] in: The real-time remaining power of the lithium battery is the rated capacity of the lithium battery (≥2000mAh). This is a low battery protection command.

[0020] Beneficial effects: To meet the specific needs of PICC placement patients, a PICC catheter avoidance groove and elastic protective pad are provided in the wrist fixation area to effectively avoid pressure on the placement site during massage, preventing catheter displacement and bleeding, and ensuring placement safety. A massage gradient control unit achieves progressive pressure application and reflux deflation from the fingertips to the wrist, simulating the squeezing and reflux action of manual massage, which better conforms to the body's blood circulation patterns, improving blood circulation and alleviating swelling and numbness in the arm after PICC placement. A temperature control module works in conjunction with massage to further promote blood circulation, while the heat-insulating non-woven fabric prevents the heating element from directly contacting the skin and causing burns. A safety protection module addresses safety hazards such as uncontrolled air pressure and temperature. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 For the present invention Figure 1 Sectional view at point AA; Figure 3 This is a flowchart of the process of the present invention; In the diagram: 1. Glove-shaped main body, 11. Palm massage area, 12. Finger massage area, 13. Wrist fixation area, 2. Massage airbag, 3. PICC catheter clearance groove, 4. Lithium battery. Detailed Implementation

[0022] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0023] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Combination Figure 1-3 As shown, this invention provides a temperature-controlled hand massager suitable for patients with PICC line insertion, comprising a glove-shaped main body 1, a massage module, a temperature control module, a power supply module, and a safety protection module; the glove-shaped main body 1 is divided into a palm massage area 11, a finger massage area 12, and a wrist fixation area 13, with a PICC line avoidance groove 3 provided in the wrist fixation area 13, and an elastic protective pad provided in the PICC line avoidance groove 3; the massage module includes a miniature air pump, multiple massage airbags 2, an air duct, and a massage gradient control unit, with the multiple massage airbags 2 respectively located in the palm massage area. The massage device includes a palm massage area 11, a finger massage area 12, and a wrist fixation area 13. The massage airbag 2 is connected to the micro air pump via an air duct, and the massage gradient control unit is electrically connected to the micro air pump. The temperature control module is located in the palm massage area 11 to achieve precise constant temperature heating of the hand. The power supply module is located in the wrist fixation area 13 to provide power support for the entire massage device. The safety protection module is located in the palm massage area 11, the finger massage area 12, and the wrist fixation area 13, and is electrically connected to the massage gradient control unit and the temperature control module to perform real-time safety monitoring and protection of air pressure, temperature, and current.

[0027] This invention provides a temperature-controlled hand massager suitable for patients with PICC (Peripherally Inserted Central Catheter) insertion. It is tailored to the specific needs of PICC patients, featuring a PICC catheter avoidance groove and an elastic protective pad in the wrist fixation area 13. This effectively avoids pressure on the insertion site during massage, preventing catheter displacement and bleeding, and ensuring insertion safety. A massage gradient control unit achieves progressive pressure application and reflux deflating from the fingertips to the wrist, simulating the squeezing and reflux action of manual massage. This better conforms to the body's blood circulation patterns, improving blood circulation and alleviating swelling and numbness in the arm after PICC insertion. A temperature control module further promotes blood circulation in conjunction with massage, while an insulating non-woven fabric prevents the heating element from directly contacting the skin and causing burns. A safety protection module addresses safety hazards related to uncontrolled air pressure and temperature.

[0028] In an embodiment of the present invention, the massage gradient control unit implements gradient pressure application and deflation actions for multiple massage airbags 2 from the finger massage area 12 to the palm massage area 11, and then from the palm massage area 11 to the wrist fixation area 13. The specific formula is as follows:

[0029] in: For the first The actual inflation pressure of each massage airbag 2, n=1-9; The chip is preset with a base air pressure, which is 70% of the maximum safe inflation pressure for the airbag. (Default) =20kPa; This refers to the massage intensity level, with the gentle setting as the setting. =0.6, Standard Range =1.0, Enhanced Version =1.4, assigned by the chip via force adjustment key commands; The inflation time for the nth airbag increases sequentially in a gradient manner. =0.5s, = +0.2s; Basic inflation time, default =1s, which serves as the chip calibration reference; The massage frequency is determined by the inflation and deflation time, with the low speed setting being the optimal setting. =10 beats / minute, medium speed =20 times / minute, high speed =30 times / minute, the chip switches frequencies by adjusting the total charging and discharging duration; gradient logic: chip control. according to The pressure is increased gradually, from the extremities to the wrist, and then released by pressing... The pressure is gradually reduced to simulate the squeezing and reflux action of a manual massage.

[0030] In an embodiment of the present invention, the temperature control module includes a heating element, a temperature sensor, a temperature control switch, and a constant temperature control unit. The heating element is disposed in the palm massage area 11 and its outer surface is covered with heat-insulating non-woven fabric. The temperature sensor has a temperature adjustment range of 35℃-45℃ and an adjustment accuracy of 0.5℃. The constant temperature control unit realizes automatic power-off heat preservation and heat replenishment. The heating element, temperature sensor, temperature control switch, and constant temperature control unit are electrically connected.

[0031] In an embodiment of the present invention, the constant temperature control unit achieves precise temperature control. The temperature is collected in real-time by a temperature control module and a temperature sensor, and compared with a preset temperature. Then, the power supply to the heating element is adjusted using a PID proportional-integral-derivative control formula to achieve precise temperature control without overshoot. The specific formula is as follows:

[0032] The deviation value is:

[0033] in: The power output from the chip to the flexible heating element is 0 ≤ P ≤ 5W; This is the temperature deviation value, which is the difference between the chip's preset temperature setting and the actual temperature collected in real time by the temperature sensor. This is the scaling factor, the default value. =0.8; The integral coefficient is the default value. =0.2; These are the differential coefficients, default value. =0.1, these three are the built-in PID calibration parameters of the chip, adapted to the thermal characteristics of the graphene heating element; Set: the target temperature (°C) set by the patient, 35°C≤Set≤45°C, input by the heating / cooling button command; Real: the temperature sensor collects the temperature (°C) in real time, with a sampling frequency of 1 time / 0.5s; Constant temperature logic: when e(t)>0.5°C, the chip increases P to increase the heating power; when |e(t)|≤0.5°C, the chip keeps P unchanged to achieve constant temperature; when e(t)<-0.5°C, the chip reduces P to 0 and cuts off the power supply to the heating element.

[0034] In an embodiment of the present invention, the power supply module is specifically a lithium battery 4, which is disposed in the wrist fixing area 13, has a battery capacity of ≥2000mAh, and is equipped with a Type-C charging interface.

[0035] In an embodiment of the present invention, the safety protection module uses this formula to make real-time judgments on three types of safety signals: pressure, temperature, and current. When the collected value exceeds a preset threshold, a protection action is automatically triggered. The specific formula is as follows:

[0036] Wherein: is the trigger instruction for chip protection action. Y = 0 means normal operation, and Y = 1 means trigger protection, and downshift / power-off is executed; is the physical quantity collected by the chip in real time, and can be replaced by air pressure P, temperature T, and current I; is the preset safety threshold of the chip, and a fixed value is set according to different protection types: Pressure protection: (the maximum safe air pressure of the massage airbag 2), and the collected value is the real-time air pressure of the airbag of the pressure sensor; Over-temperature protection: (the highest safe temperature of the heating sheet), and the collected value is the real-time temperature of the temperature sensor; Over-current protection: (the maximum safe working current of the circuit), and the collected value is the real-time current of the current sensor connected in series in the circuit; Protection logic: When Y = 1, the chip executes actions according to the preset program - when the pressure exceeds the threshold, kL is downshifted by one gear, and when the temperature / current exceeds the threshold, the power supply of the corresponding module is directly cut off.

[0037] In the embodiment of the present invention, an energy-saving module is further included. The energy-saving module realizes the automatic switching of the energy-saving mode and the power-off protection for low battery power. The core is the energy-saving mode trigger module and the low-battery power-off protection module, and the two operate independently and output in a linkage manner.

[0038] In the embodiment of the present invention, the specific formula of the energy-saving mode trigger module is:

[0039] Wherein: is the cumulative time of no operation and no activity, and the chip measures time in real time; is the operation signal, no operation means no key operation, and operation means there is key operation; is the activity signal, no movement means no activity of the hand (no signal from the anti-detachment sensor), and movement means there is activity of the hand; is the energy-saving mode instruction. When the chip saves time, the massage mode is automatically switched to gentle strength + low speed frequency, and save is the normal mode.

[0040] In the embodiment of the present invention, the specific formula of the low-battery power-off protection module is:

[0041] Wherein: is the remaining power of the lithium battery 4 in real time, and the rated capacity of the lithium battery 4 is rated (≥2000 mAh); is the low-battery protection instruction.

[0042] Usage process: The present invention relates to a temperature-controlled hand massager suitable for patients with PICC line insertion. The steps for using the device are as follows: Wearing: The patient inserts the arm with the PICC insertion into the glove-like main body 1, places the PICC catheter in the catheter clearance groove of the wrist fixation area 13, and fixes the wrist fixation area 13 with Velcro to ensure that the catheter is not compressed and that the massage balloon 2 fits snugly against the hand; Power on: Press the temperature control switch to power on the device. The power indicator light will illuminate, showing the remaining power. Parameter settings: Patients can select the massage intensity (gentle / standard / strong) using the intensity adjustment button, select the massage frequency (low / medium / high) using the frequency adjustment button, and set the target temperature (35℃-45℃) using the heating / cooling button. Massage Start: After the parameters are set, the device will automatically start the massage module and temperature control module, and perform massage according to the preset gradient. At the same time, the heating element will achieve precise constant temperature heating according to the set temperature. Self-use: Patients can adjust the massage intensity, frequency, and temperature control at any time according to their own feelings. During the massage, the safety protection module monitors the air pressure, temperature, and current in real time to ensure safe use. Power off / Energy saving: After the massage is finished, the patient presses the temperature control switch to turn off the device; if the patient does not operate or move for 10 minutes, the device will automatically switch to energy saving mode and automatically start the power protection when the battery is low. Charging: When the power indicator light shows low battery, charge the lithium battery 4 via the Type-C charging port.

[0043] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A temperature-controlled hand massager suitable for patients with PICC line insertion, characterized in that, include: The glove-shaped main body is specifically divided into a palm massage area, a finger massage area and a wrist fixation area. The wrist fixation area is provided with a PICC catheter avoidance groove, and an elastic protective pad is provided in the PICC catheter avoidance groove. The massage module specifically comprises a miniature air pump, multiple massage airbags, an air duct, and a massage gradient control unit. The multiple massage airbags are respectively disposed in the palm massage area, the finger massage area, and the wrist fixation area. The multiple massage airbags are connected to the miniature air pump through the air duct, and the massage gradient control unit is electrically connected to the miniature air pump. A temperature control module is located in the palm massage area; The power supply module is located in the wrist fixation area; A safety protection module is disposed in the palm massage area, the finger massage area and the wrist fixation area, and is electrically connected to the massage gradient control unit and the temperature control module.

2. A temperature-controlled hand massager suitable for patients with PICC catheterization according to claim 1, characterized in that, The massage gradient control unit enables multiple massage airbags to perform gradient pressure application and deflation actions from the finger massage area to the palm massage area, and then from the palm massage area to the wrist fixation area. The specific formula is as follows: ； in: For the first The actual inflation pressure of each massage airbag, n=1-9; The chip is preset with a base air pressure, which is 70% of the maximum safe inflation pressure for the airbag. (Default) =20kPa; The massage intensity level coefficient is assigned by the chip based on the intensity adjustment button command; The inflation time for the nth airbag increases sequentially in a gradient manner. Basic inflation time, default =1s, which serves as the chip calibration reference; The massage frequency is determined by the inflation and deflation times; the chip switches frequencies by adjusting the total inflation and deflation duration. Gradient logic: chip control. according to The pressure is increased gradually, from the extremities to the wrist, and then released by pressing... The pressure is gradually reduced to simulate the squeezing and reflux action of a manual massage.

3. A temperature-controlled hand massager suitable for patients with PICC catheterization according to claim 1, characterized in that, The temperature control module includes a heating element, a temperature sensor, a temperature control switch, and a constant temperature control unit. The heating element is disposed in the palm massage area and its outer surface is covered with heat-insulating non-woven fabric. The temperature sensor has a temperature adjustment range of 35℃-45℃ and an adjustment accuracy of 0.5℃. The constant temperature control unit realizes automatic power-off heat preservation and heat replenishment. The heating element, the temperature sensor, the temperature control switch, and the constant temperature control unit are electrically connected.

4. A temperature-controlled hand massager suitable for patients with PICC line insertion according to claim 3, characterized in that, The constant temperature control unit achieves precise temperature control. It acquires the temperature of the heating element in real time through the temperature control module and the temperature sensor, compares this temperature with a preset temperature, and then adjusts the power supply to the heating element using a PID proportional-integral-derivative control formula to achieve precise temperature control without overshoot. The specific formula is as follows: The deviation value is: ,in: The power output from the chip to the flexible heating element is 0 ≤ P ≤ 5W; This is the temperature deviation value, which is the difference between the chip's preset temperature setting and the actual temperature collected in real time by the temperature sensor. This is the scaling factor, the default value. =0.8; The integral coefficient is the default value. =0.2; These are the differential coefficients, default value. =0.1, these three are the PID calibration parameters built into the chip, adapted to the thermal characteristics of the graphene heating element.

5. A temperature-controlled hand massager suitable for patients with PICC line insertion according to claim 1, characterized in that, The power supply module is specifically a lithium battery, which is located in the wrist fixing area. The lithium battery has a capacity of ≥2000mAh and is equipped with a Type-C charging interface.

6. A temperature-controlled hand massager suitable for patients with PICC line insertion according to claim 1, characterized in that, The safety protection module uses this formula to make real-time judgments on three types of safety signals: pressure, temperature, and current. When the collected value exceeds a preset threshold, it automatically triggers a protection action. The specific formula is as follows: ;in: This is the chip protection action trigger command. Y=0 means normal operation, Y=1 means triggering protection, executing downgrading / power off; The physical quantities collected in real time by the chip can be replaced by air pressure P, temperature T, and current I; The preset safety threshold for the chip.

7. A temperature-controlled hand massager suitable for patients with PICC line insertion according to claim 1, characterized in that, It also includes an energy-saving module, which realizes automatic switching of energy-saving mode and low battery protection. The core of the module is the energy-saving mode trigger module and the low battery protection module, which operate independently and output in conjunction.

8. A temperature-controlled hand massager suitable for patients with PICC line insertion according to claim 7, characterized in that, The specific formula for the energy-saving mode trigger module is as follows: ; Wherein: is the cumulative time of no operation and no activity, and the chip performs real-time timing; is the operation signal, where "no operation" means no key operation, and "operation" means there is a key operation; is the activity signal, where "no activity" means no hand activity (no signal from the anti-drop sensor), and "activity" means there is hand activity; is the energy-saving mode instruction. When "energy-saving", the chip automatically switches the massage mode to gentle intensity + low speed frequency, and when "normal", it is the normal mode.

9. A temperature-controlled hand massager suitable for patients with PICC line insertion according to claim 7, characterized in that, The specific formula for the low battery protection module is as follows: ;in: The real-time remaining power of the lithium battery is the rated capacity of the lithium battery (≥2000mAh). This is a low battery protection command.

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