Monitoring nursing device with arm numbness preventing function for hemodialysis nursing

Abstract

The invention discloses a monitoring nursing device with an arm numbness preventing function for hemodialysis nursing, and belongs to the technical field of medical nursing equipment. The device comprises a housing, an arm frame is longitudinally installed in the housing, horizontal and vertical massage columns are arranged on the two sides and the bottom of the arm frame and driven by a side motor and a bottom motor through cams, reciprocating massage is achieved in cooperation with a reset spring, and the paired massage columns press alternately; a breathable cotton layer, a temperature sensor and a heating piece are arranged on the inner side of the arm frame, and the heating piece is connected with the arm frame through a fixing spring. A pressing type spring switch and an adjustable spacing structure are further arranged, and linkage control is provided. The arm massager can massage the arms of a patient, promote blood circulation, monitor temperature, heat and keep warm, trigger massage according to the movement of the arms of the patient, adapt to different arm thicknesses, prevent the arms from numbness and improve the comfort degree.

Description

Technical Field

[0001] This invention belongs to the field of medical and nursing equipment technology, specifically relating to a monitoring and nursing device for hemodialysis nursing that has the function of preventing arm numbness. Background Technology

[0002] During hemodialysis treatment, patients typically need to keep their arm in a specific position (usually extended or slightly externally rotated) for an extended period to ensure unobstructed blood drainage and the stability of the dialysis tubing. However, due to the long treatment time (usually 3-5 hours), the patient's arm remains in a static state for an extended period, resulting in prolonged inactivity of the arm muscles, obstructed venous return, and local ischemia and hypoxia, which in turn causes numbness and tingling sensations.

[0003] To relieve numbness in the arm, medical staff or family members intermittently knead the patient's arm to promote blood circulation. However, this manual method is inconvenient and prone to errors that could affect the tubing. Existing technologies use vibration motors to simulate massage or passive deformation to achieve the same effect, but neither method is very effective in promoting blood circulation, and both lack sufficient regulatory coordination and integration. Summary of the Invention

[0004] To address the problems mentioned above, this invention proposes a monitoring and nursing device for hemodialysis care that prevents arm numbness. Using this device, the arm can be massaged during dialysis to promote blood circulation, while simultaneously monitoring the patient's skin surface temperature and providing arm heating and warmth. The combination of massage and warmth prevents numbness in the patient's arm.

[0005] To achieve the technical objectives mentioned above, the present invention is implemented through the following technical solution: a monitoring and nursing device for hemodialysis care with an anti-arm numbness function, comprising a cover, the cover being a rectangular shell with an open top, protective plates snapped onto the front and back of the cover, an arm frame longitudinally installed inside the cover, the cross-section of the arm frame being a U-shape with an open top, allowing the patient to place their dialysis arm into the arm frame, the arm frame having several pairs of transverse holes symmetrically opened on both sides, each pair consisting of two front and two back holes, and each hole housing a transverse horizontal massage column, which can slide laterally to massage the inner side, a cam installed on the inner side of the cover corresponding to the outer end of the horizontal massage column, the cam driving the horizontal massage column to move, each cam being composed of... Controlled by the same rotating shaft, a side motor is installed on the front side of the cover corresponding to the cam. The output end of the side motor is coaxially connected to the cam shaft, and the side motor drives the cam to drive the horizontal massage column. The bottom of the arm frame is equipped with vertical massage columns, cams, and bottom motors that are symmetrical to the horizontal massage columns, thereby realizing massage of the lower and left and right sides of the patient's arm. A breathable cotton layer is installed on the inner side of the arm frame. The left and right sides of the breathable cotton layer are fixed to the top of the left and right sides of the arm frame, respectively. The breathable cotton layer is loose and deformable. After the arm is placed in the arm frame, the breathable cotton layer fits the arm to keep it warm and does not affect the massage effect. Several temperature sensors are installed on the surface of the breathable cotton layer to monitor the temperature of the arm surface.

[0006] Furthermore, the inner side of the arm frame is symmetrically equipped with heating pads arranged in a front-to-back pattern. The side of the heating pad corresponding to the breathable cotton layer can be heated, which facilitates heating and keeping the patient's arm warm. The heating pads are connected to the arm frame by a fixed spring, so that the heating pads can swing with the arm movement and maintain a close fit, thereby improving the heat transfer efficiency.

[0007] The inner front and rear ends of the arm frame are equipped with symmetrical push-type spring switches. The push-type spring switches are inclined to the axis of the arm frame, and the trigger point is located at the line connecting the highest points of the horizontal and vertical massage columns. This allows the push-type spring switches to be triggered by arm movement after the arm is placed in the arm. The switches on the left and right sides control the bottom motor and side motor on the left and right sides, respectively. When the patient moves the arm to the left, the left horizontal massage column and the left vertical massage column can be activated for massage. The same applies when moving the arm to the right, which improves the control linkage of the device and allows massage to be performed according to the patient's needs during use.

[0008] The horizontal massage column is fitted with a return spring on the outer part of the arm frame. One end of the return spring is connected to the outer end of the horizontal massage column, and the other end is connected to the outer surface of the arm frame. The return spring causes the horizontal massage column to return to its original position after sliding under the drive of the cam, thus maintaining reciprocating motion.

[0009] The protruding parts of the cams at the rear ends of the horizontal and vertical massage columns are opposite to each other, so that the paired massage columns press alternately, further simulating the effect of artificial massage and improving patient comfort.

[0010] Furthermore, a control module is installed on the side of the housing. The control module is electrically connected to the bottom motor, the side motor, the heating element, and the temperature sensor. The control module includes a motor speed control unit and a temperature control unit, which can control the motor speed, preset the temperature threshold, and control the heating element according to the temperature monitored by the temperature sensor, thereby adjusting it according to the patient's needs.

[0011] The cover and arm frame are divided into left and right parts at the left and right axis of symmetry, so that the distance between the cover and the arm frame is adjustable. The bottom of the left and right parts of the cover is equipped with a fixed sleeve and a threaded sleeve in sequence. A fixed rod is sleeved in the fixed sleeve. The right end of the fixed rod is fixedly connected to the right part of the cover, and the left end of the fixed rod is slidable with the sleeve part of the cover. A screw is sleeved in the threaded sleeve. The right end of the screw is sleeved in the threaded sleeve through a bearing, and the left end of the screw is threaded with the threaded sleeve. By rotating the screw, the distance between the left and right parts of the cover and the arm frame can be adjusted to accommodate patients with different arm sizes.

[0012] The massage ends of the horizontal and vertical massage columns are spherical and have smooth surfaces, which reduces friction between the ends and the breathable cotton layer and concentrates the massage force points, thereby improving the massage effect.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The arm frame, horizontal massage column, cam, and side motor are installed vertically inside the housing, and the vertical massage column, cam, and bottom motor are correspondingly installed at the bottom of the arm frame. The cam rotates under the drive of the side motor or bottom motor, pushing the horizontal massage column to slide laterally or the vertical massage column to move vertically. The return spring makes the massage column return to its original position to achieve reciprocating motion. At the same time, the protruding parts of the cam are opposite to each other, so that the paired massage columns press alternately, thereby providing alternating massage to the lower part and left and right sides of the patient's arm, simulating the effect of manual massage, preventing numbness in the arm during hemodialysis and improving comfort.

[0015] 2. Utilizing a breathable cotton layer, temperature sensor, and symmetrical heating pads installed on the inside of the arm frame, the temperature sensor monitors the surface temperature of the breathable cotton layer. The temperature control unit of the control module adjusts the heating pads according to the set threshold. The heating pads are connected to the arm frame via fixed springs, allowing them to swing with the arm movement and maintain a close fit. Thus, when the arm is placed in the frame, the breathable cotton layer relaxes and deforms to fit the arm and keep it warm, while achieving automatic temperature regulation and efficient heat transfer. This avoids discomfort caused by excessively low temperatures and maintains a suitable care environment.

[0016] 3. With the help of push-type spring switches installed at the front and rear ends of the inner side of the arm frame at an angle to the axis, and the adjustable spacing structure between the cover and the arm frame, the push-type spring switches are triggered when the patient's arm moves, and the bottom motor and side motor on the corresponding side are activated to control the massage according to the left or right tilt of the arm.

[0017] 4. By using a fixed sleeve, a fixed rod, a threaded sleeve, and a screw, the distance between the cover and the left and right parts of the arm frame can be adjusted by rotating the screw. This allows the device to adapt to patients with different arm sizes, improving its flexibility and making it easier for patients to actively trigger the massage as needed, while also ensuring the device's universality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments are briefly introduced below.

[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of Embodiment 1 of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall structure of the right half of Embodiment 1 of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the right half of the casing in Embodiment 1 of the present invention;

[0023] Figure 5 This is a schematic diagram of the heating element structure in Embodiment 1 of the present invention;

[0024] Figure 6 This is an overall sectional view of the screw section in Embodiment 1 of the present invention.

[0025] The structural names represented by each number in the attached diagram are as follows:

[0026] 1-Cover, 101-Protective plate, 102-Threaded sleeve, 103-Fixing sleeve, 2-Arm frame, 3-Breathable cotton layer, 301-Temperature sensor, 4-Horizontal massage column, 401-Reset spring, 5-Vertical massage column, 6-Bottom motor, 7-Side motor, 8-Cam, 801-Rotating shaft, 9-Heating element, 901-Fixing spring, 10-Push-type spring switch, 11-Screw, 12-Fixing rod, 13-Control module. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Example 1

[0029] This embodiment provides a monitoring and nursing device for hemodialysis care that prevents arm numbness. It includes a rectangular shell 1 made of medical-grade ABS plastic. The shell 1 has an open top and is fitted with removable protective plates 101 at the front and back for easy cleaning and disinfection. Inside the shell 1, a U-shaped aluminum alloy arm support 2 is longitudinally installed, allowing the patient's dialysis arm to rest. The arm support 2 has several pairs of symmetrical transverse holes on its left and right sides. Each pair consists of two holes, one at the front and one at the back. A horizontally sliding massage column 4 is fitted inside each hole, with its massage end made of smooth spherical stainless steel. The outer end of the horizontal massage column 4 extends to the inside of the shell 1. Cams 8 are installed on the inside of the shell 1 corresponding to the outer ends of each horizontal massage column 4. Each cam 8 is linked via the same rotating shaft 801. Side motors 7 are installed on both sides of the shell 1, their output ends coaxially connected to the rotating shaft 801 of the cams 8, driving the cams 8 to rotate and push the horizontal massage columns 4 to slide laterally, thus massaging both sides of the patient's arm. The bottom of the armrest 2 is equipped with symmetrical vertical massage columns 5 (the massage ends are also spherical), cams 8 and bottom motors 6 in the same way. The bottom motors 6 drive the cams 8 to make the vertical massage columns 5 move in the vertical direction to massage the lower part of the arm.

[0030] The inner side of the arm frame 2 is covered with a loose and flexible breathable cotton layer 3, made of medical-grade absorbent cotton. The left and right sides are fixed to the top of the arm frame 2, automatically conforming to the skin for warmth when the arm is placed inside. Several temperature sensors 301 are embedded in the surface of the breathable cotton layer 3 to monitor the arm surface temperature in real time. Heating pads 9 are symmetrically arranged front and back on the inner side of the arm frame 2, with the heating surface facing the breathable cotton layer 3. The heating pads 9 are connected to the arm frame 2 by a fixing spring 901, allowing the heating pads 9 to swing with arm movement to maintain a close fit and improve heat transfer efficiency. Symmetrical push-type spring switches 10 are located at the front and back ends of the inner side of the arm frame 2, angled at 45 degrees towards the axis of the arm frame 2. The trigger point is located at the line connecting the highest point of the horizontal massage column 4 and the vertical massage column 5. When the patient's arm tilts left / right, the corresponding side switch is triggered, activating the bottom motor 6 and the side motor 7 on the same side for unilateral massage.

[0031] A return spring 401 is sleeved on the outer part of the horizontal massage column 4 located on the arm frame 2. One end of the return spring 401 is connected to the outer end of the horizontal massage column 4, and the other end is fixed to the outer surface of the arm frame 2, so that the massage column returns to its original position after being driven by the cam 8, thus achieving reciprocating motion. The same return spring 401 is installed synchronously on the outer side of the vertical massage column 5. The protruding parts of the cam 8 at the rear end of each massage column are arranged in opposite pairs, so that the paired massage columns press alternately, simulating the effect of manual kneading. A control module 13 (STM32 main control chip) is installed on the side of the cover 1. Its motor speed control unit adjusts the speed of the side motor 7 and the bottom motor 6 through PWM signals. The temperature control unit controls the heating element 9 to start and stop according to the preset threshold (such as 28-32℃) and the feedback signal from the temperature sensor 301.

[0032] The cover 1 and the arm frame 2 are divided into two parts along a left-right axis of symmetry. The distance between them is adjusted via a fixed sleeve 103 and a threaded sleeve 102 located at the front and rear of the bottom. A fixed rod 12 is fitted inside the fixed sleeve 103; the right end of the fixed rod 12 is fixedly connected to the right part of the cover 1, and the left end is slidably connected to the left part of the cover 1. A screw 11 is fitted inside the threaded sleeve 102; the right end of the screw 11 is connected to the threaded sleeve 102 via a bearing, and the left end is threaded into the threaded sleeve 102. Rotating the screw 11 moves the left part of the cover 1, thus adapting to patients with different arm circumferences.

[0033] The process of using this device is as follows: After the patient places their dialysis arm into the arm holder 2, the breathable cotton layer 3 automatically conforms to the skin. The temperature sensor 301 continuously monitors the temperature and feeds it back to the control module 13. When the temperature is lower than the set threshold, the heating element 9 is activated to keep the patient warm. During dialysis, tilting the patient's arm to the left triggers the left-hand press-type spring switch 10, activating the left-hand horizontal massage column 4 and vertical massage column 5 for alternating massage; tilting to the right similarly triggers the right-hand massage. During the massage, the cam 8 drives the horizontal massage column 4 to slide laterally and the vertical massage column 5 to move up and down. The return spring 401 ensures their reciprocating motion. The alternating pressing mode simulates manual kneading to promote blood circulation. If it is necessary to adjust the arm circumference fit, rotating the screw 11 moves the left part of the cover 1 to the appropriate distance.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. For those skilled in the art, various modifications and variations can be made to the above embodiments without departing from the principles of the present invention, and all such modifications and variations should fall within the scope of protection of the present invention.

Claims

1. A monitoring and nursing device for hemodialysis care with the function of preventing arm numbness, characterized in that, Includes a housing (1): The housing (1) has an arm frame (2) installed longitudinally inside. The cross-section of the arm frame (2) is a U-shape with an open top. Several pairs of transverse holes are symmetrically opened on the left and right sides of the arm frame (2), forming a pair in front and back. Each hole is fitted with a transverse horizontal massage column (4). The horizontal massage column (4) can slide laterally to massage the inner side. A cam (8) is installed on the inner side of the housing (1) corresponding to the outer end of the horizontal massage column (4). The cam (8) can drive the horizontal massage column (4) to move. The cam (8) on each side is controlled by the same rotating shaft (801). A side motor (7) is installed at the front corresponding to the cam (8). The output end of the side motor (7) is coaxially connected to the rotating shaft (801) of the cam (8). The bottom of the arm frame (2) is equipped with vertical massage columns (5), cam (8) and bottom motor (6) that are symmetrical to the horizontal massage column (4) in the same way. A breathable cotton layer (3) is installed on the inner side of the arm frame (2). The left and right sides of the breathable cotton layer (3) are fixed to the top of the left and right sides of the arm frame (2) respectively. The breathable cotton layer (3) is loose and deformable. Several temperature sensors (301) are installed on the surface of the breathable cotton layer (3).

2. The monitoring and nursing device for hemodialysis nursing with the function of preventing arm numbness according to claim 1, characterized in that: The inner side of the arm frame (2) is symmetrically equipped with heating plates (9) arranged in front and behind. The side of the heating plate (9) corresponding to the breathable cotton layer (3) can be heated. The heating plate (9) and the arm frame (2) are connected by a fixing spring (901).

3. The monitoring and nursing device for hemodialysis nursing with the function of preventing arm numbness according to claim 1, characterized in that: The inner front and rear ends of the arm frame (2) are respectively equipped with left and right symmetrical push-type spring switches (10). The push-type spring switches (10) are inclined to the axis of the arm frame (2), and their trigger points are located at the line connecting the highest points of the horizontal massage column (4) and the vertical massage column (5). The switches on the left and right sides control the bottom motor (6) and the side motor (7) on the left and right sides respectively.

4. The monitoring and nursing device for hemodialysis nursing with the function of preventing arm numbness according to claim 1, characterized in that: A return spring (401) is sleeved on the outer part of the horizontal massage column (4) on the arm frame (2). One end of the return spring (401) is connected to the outer end of the horizontal massage column (4), and the other end is connected to the outer surface of the arm frame (2). The same return spring (401) is also installed on the outer side of the vertical massage column (5).

5. The monitoring and nursing device for hemodialysis nursing with the function of preventing arm numbness according to claim 1, characterized in that: The protruding parts of the cams (8) corresponding to the rear ends of the horizontal massage column (4) and the vertical massage column (5) are opposite to each other, so that the pairs of massage columns press alternately.

6. The monitoring and nursing device for hemodialysis nursing with the function of preventing arm numbness according to claim 2, characterized in that: A control module (13) is installed on the side of the cover (1). The control module (13) is electrically connected to the bottom motor (6), the side motor (7), the heating element (9) and the temperature sensor (301). The control module (13) includes a motor speed control unit and a temperature control unit.

7. The monitoring and nursing device for hemodialysis nursing with the function of preventing arm numbness according to claim 1, characterized in that: The cover (1) and the arm frame (2) are divided into left and right parts at the left and right axis of symmetry. The bottom of the left and right parts of the cover (1) are respectively installed with a fixed sleeve (103) and a threaded sleeve (102). A fixed rod (12) is sleeved inside the fixed sleeve (103). The right end of the fixed rod (12) is fixedly connected to the right part of the cover (1). The left end of the fixed rod (12) can slide with the sleeve part of the cover (1). A screw (11) is sleeved inside the threaded sleeve (102). The right end of the screw (11) is sleeved in the threaded sleeve (102) through a bearing. The left end of the screw (11) is threaded with the threaded sleeve (102).

8. The monitoring and nursing device for hemodialysis nursing with the function of preventing arm numbness according to claim 1, characterized in that: The massage ends of the horizontal massage column (4) and the vertical massage column (5) are spherical and have smooth surfaces.

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