Adjustable hemodialysis auxiliary support and method thereof

Abstract

The invention discloses an adjustable hemodialysis auxiliary support in the technical field of medical auxiliary equipment, the adjustable hemodialysis auxiliary support comprises a big arm positioning piece and a small arm positioning piece, a connecting bent plate and a traction assembly are arranged between the big arm positioning piece and the small arm positioning piece, the two ends of the connecting bent plate are fixedly installed on the big arm positioning piece and the small arm positioning piece respectively, and the traction assembly is connected with the big arm positioning piece and the small arm positioning piece; the connecting bent plate can abut against the elbow position of the patient, a pressure sensor is arranged in the connecting bent plate, and the pressure sensor can detect the bending degree of the elbow of the patient; the traction assembly is composed of a traction rope and a winding mechanism, the winding mechanism is arranged at the upper end of the large arm positioning piece, one end of the traction rope is fixed to the small arm positioning piece, and the other end of the traction rope is arranged on the winding mechanism; the forearm of a patient is continuously and slowly dragged to be folded back and forth in the direction of the big arm through the big arm positioning piece and the forearm positioning piece in the dialysis process, so that the forearm of the patient is always in a moving state, and the arm of the patient is prevented from being numb.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and in particular to an adjustable hemodialysis auxiliary support and a method thereof. Background Art

[0002] When the patient's arm is immobile for a long time, nerve compression, muscle tension and blood circulation problems will occur, resulting in numbness in the patient's upper limbs. Generally, a caregiver is required to massage the patient's arm to relieve the patient's pain and promote blood circulation. Nowadays, in order to save manpower, mechanical massage equipment is often used to replace manual massage. The massage points on the front of the existing machine are mostly consistent, and the massage points cannot be adjusted. The patient's arm needs to remain relatively still on the massage equipment. The equipment itself cannot move with the patient's arm, which is inconvenient for the patient to move his arm. Most of these massage devices relieve the paralysis of the patient's arm by squeezing the muscles. In fact, after the patient's arm becomes numb, the massage method of squeezing the muscles not only cannot quickly help the patient relieve the numbness, but will increase the patient's pain and spread the numbness to the surrounding muscles. Summary of the invention

[0003] The technical problem of the present invention is to provide an adjustable hemodialysis auxiliary bracket and method thereof, so that the patient's forearm can be continuously and slowly pulled toward the upper arm direction and folded back and forth during dialysis through the upper arm positioning piece and the lower arm positioning piece, so that the patient's forearm is always in a state of motion, thereby avoiding numbness of the patient's arm.

[0004] To achieve the above object, the present invention provides the following technical solution: an adjustable hemodialysis auxiliary support, comprising an upper arm positioning member and a lower arm positioning member, wherein a connecting curved plate and a traction assembly are provided between the upper arm positioning member and the lower arm positioning member:

[0005] A connecting curved plate, the two ends of which are respectively fixedly mounted on the upper arm positioning member and the lower arm positioning member, the connecting curved plate can contact the patient's elbow position, a pressure sensor is arranged inside the connecting curved plate, and the pressure sensor can detect the bending degree of the patient's elbow;

[0006] A traction assembly, the traction assembly is composed of a traction rope and a reeling mechanism, the reeling mechanism is arranged at the upper end of the boom positioning member, one end of the traction rope is fixed to the forearm positioning member, and the other end is arranged on the reeling mechanism, and the reeling mechanism can pull the forearm positioning member close to the boom positioning member through the traction rope;

[0007] The forearm positioning piece is provided with a massage component, which is composed of two groups of symmetrically arranged massage units. The massage units are located below the forearm positioning piece and can slide along the lower inner wall of the forearm positioning piece.

[0008] As a further solution of the present invention, the boom positioning piece is a semicircular short plate with a notch on top and an upper pressure plate is arranged above it, and multiple groups of positioning screws are symmetrically installed on the lower end of the upper pressure plate, the positioning screws are rotatably connected to the upper pressure plate and threadedly connected to the boom positioning piece, and a fixing nut is arranged on the lower surface of the boom positioning piece corresponding to the position of the positioning screw.

[0009] As a further solution of the present invention, the winding mechanism includes a winding shaft, which is symmetrically arranged on both sides of the upper end of the boom positioning piece and is rotatably connected to the boom positioning piece. One end of the traction rope is fixed on the winding shaft, and the other end is fixed to the upper end of the forearm positioning piece through a connecting seat. A transmission member is arranged between the winding shafts on the same side, and the transmission member is composed of two groups of transmission gears and a transmission chain sleeved on the outside of the transmission gear. The transmission gear is fixedly mounted on the winding shaft, and a bidirectional motor is arranged in the boom positioning piece, and the bidirectional motor can drive the winding shaft to rotate.

[0010] As a further solution of the present invention, the forearm positioning piece is a semi-elliptical curved plate and the length of the plate body is close to the length of the human forearm, side connecting plates are fixedly installed on both sides of the upper end of the forearm positioning piece, and the inner sides of the side connecting plates are slidably connected to mounting seats, and a positioning rod is threadedly connected to the mounting seat, one end of the positioning rod can pass through the mounting seat and abut against the side connecting plate, and an upper protective curved plate is fixedly connected between the symmetrically arranged mounting seats, the upper protective curved plate is an elastic plate and can automatically approach the surface of the patient's arm, a plurality of groups of support rods are evenly arranged on the lower surface of the upper protective curved plate, a hemispherical rubber block is arranged at the lower end of the support rod, and a plurality of groups of through holes are arranged on the forearm positioning piece.

[0011] As a further solution of the present invention, the massage unit includes a lower connecting rod, a rotating shaft and a moving assembly, the lower connecting rod is arranged on the lower side of the forearm positioning piece, a plurality of groups of limit seats are fixedly mounted on the lower connecting rod and the plurality of groups of limit seats are evenly distributed, a limit groove is provided on the lower surface of the forearm positioning piece corresponding to the position of the limit seat, and the limit seat is slidably connected to the limit groove.

[0012] As a further solution of the present invention, the rotating shaft is located on the upper side of the forearm positioning member, each group of the massage units is provided with two groups of the rotating shafts and the rotating shafts on both sides are adjacent to each other, massage rollers are fixedly installed on the rotating shafts, upper positioning plates are provided at both ends of the rotating shafts, side threaded rods are rotatably installed on the lower side of the upper positioning plates, lower positioning plates are provided at both ends of the lower connecting rod, the lower positioning plates are threadedly connected to the side threaded rods, and a driving assembly is provided on the upper positioning plate, which can drive the adjacent rotating shafts to rotate relative to each other, and the driving assembly is composed of limit gears, driving gears and rotating motors that are meshed with each other on both sides, the limit gears are fixedly installed on the rotating shafts and meshed with each other, the rotating motor is fixedly installed on the upper positioning plate and the output end is fixedly connected to the driving gear, and the driving gear is meshed with the limit gear on one side.

[0013] As a further solution of the present invention, the moving assembly includes a traction shaft, which is rotatably mounted on the lower surface of the side connecting plate close to the corresponding massage unit, and multiple groups of upper connecting rods are rotatably mounted on the traction shaft. The lower end of the upper connecting rod is rotatably mounted with a lower connecting rod, and the lower end of the lower connecting rod is rotatably mounted on the limit seat. A driving motor is fixedly mounted on one side of the side connecting plate, and the driving motor can drive the traction shaft to rotate.

[0014] An adjustable hemodialysis auxiliary method, the specific steps of the adjustable hemodialysis auxiliary method are as follows:

[0015] Step 1: Insert the patient's forearm between the forearm positioning piece and the upper protective curved plate, and place the dialysis hose between the support rods;

[0016] Step 2: Place the connecting curved plate at the patient's elbow, and then clip the upper arm positioning piece onto the patient's upper arm from the lower side of the patient's upper arm;

[0017] Step 3: Then move the upper pressing plate close to the upper arm positioning piece from the upper side of the patient's upper arm, and fix the upper arm positioning piece and the upper pressing plate on the patient's upper arm through the positioning screw and the fixing nut;

[0018] Step 4: The reel shaft periodically reciprocates to cause the traction rope to periodically pull the forearm positioning member, thereby causing the patient's forearm to be folded toward and away from the patient's upper arm slowly and slightly;

[0019] Step 5: The rotating shaft rotates to massage the patient's forearm muscles, and the lower connecting rod moves to adjust the massage position of the rotating shaft.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, the forearm positioning piece is sleeved on the patient's forearm, and the upper arm positioning piece is fixed on the patient's upper arm, so that the connecting curved plate between the upper arm positioning piece and the forearm positioning piece contacts the elbow position. During the hemodialysis process, the winder winds up the traction rope, so that the traction rope pulls the forearm positioning piece close to the upper arm positioning piece, so that the patient's forearm is folded toward the upper arm. The winding mechanism releases the traction rope, so that the patient's forearm is away from the upper arm, so that the patient's forearm is continuously folded back and forth through the continuous winding and releasing of the winding mechanism, so that the patient's forearm is always in a moving state through the reciprocating folding, thereby avoiding numbness of the patient's arm due to long-term static state.

[0022] 2. The device in the present invention is worn on the patient's upper limbs through the upper arm positioning part and the forearm positioning part, and can move with the movement of the patient's upper limbs. The patient's arm does not need to cooperate with the position of the device, and the pressure sensor connecting the curved plate can sense the pressure of the patient's elbow on the connecting curved plate after the patient's forearm is folded. The closer the patient's forearm is to the upper arm, the greater the degree of folding of the patient's elbow, and the greater the pressure of the elbow on the connecting curved plate. By setting a critical value on the pressure sensor, the upper limit of the patient's forearm folding can be limited to avoid excessive folding of the patient's arm and causing the dialysis equipment to be misplaced on the arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 A partial schematic diagram of the structure at A in the middle;

[0026] Figure 3 For the present invention Figure 1 A partial schematic diagram of the structure at B in the middle;

[0027] Figure 4 For the present invention Figure 1 A partial schematic diagram of the structure at C in the middle;

[0028] Figure 5 This is a schematic diagram of the side view structure of the present invention;

[0029] Figure 6 For the present invention Figure 5 The local schematic diagram of the results at D in the middle;

[0030] Figure 7It is the principle diagram of the present invention;

[0031] Figure 8 It is an operation flow chart of the present invention.

[0032] Notes on the accompanying drawings: 1. Upper arm positioning member; 101. Upper pressure plate; 102. Reeling shaft; 103. Traction rope; 104. Positioning screw; 105. Fixing nut; 106. Transmission member; 2. Lower arm positioning member; 3. Connecting curved plate; 4. Upper protective curved plate; 5. Side connecting plate; 6. Connecting seat; 7. Lower connecting rod; 8. Limiting seat; 9. Lower connecting rod; 10. Upper connecting rod; 11. Through hole; 12. Massage roller; 13. Lower positioning plate; 14. Side threaded rod; 15. Upper positioning plate; 16. Rotating shaft; 17. Mounting seat; 18. Positioning rod; 19. Support rod; 20. Traction shaft; 21. Limiting groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 8 The present invention provides a technical solution: an adjustable hemodialysis auxiliary bracket, comprising an upper arm positioning member 1 and a lower arm positioning member 2, wherein a connecting curved plate 3 and a traction assembly are arranged between the upper arm positioning member 1 and the lower arm positioning member 2:

[0035] A connecting curved plate 3, both ends of which are fixedly mounted on the upper arm positioning member 1 and the lower arm positioning member 2, respectively. The connecting curved plate 3 can contact the patient's elbow. A pressure sensor is arranged inside the connecting curved plate 3, and the pressure sensor can detect the bending degree of the patient's elbow.

[0036] The traction assembly is composed of a traction rope 103 and a reeling mechanism. The reeling mechanism is arranged at the upper end of the boom positioning member 1. One end of the traction rope 103 is fixed on the forearm positioning member 2, and the other end is arranged on the reeling mechanism. The reeling mechanism can pull the forearm positioning member 2 close to the boom positioning member 1 through the traction rope 103.

[0037] A massage assembly is provided on the forearm positioning member 2 , and the massage assembly consists of two groups of massage units that are symmetrically arranged. The massage units are located below the forearm positioning member 2 and can slide along the lower inner wall of the forearm positioning member 2 .

[0038] During operation, the present invention sleeves the forearm positioning member 2 on the patient's forearm, and fixes the upper arm positioning member 1 on the patient's upper arm, so that the connecting curved plate 3 between the upper arm positioning member 1 and the forearm positioning member 2 contacts the elbow position. During the hemodialysis process, the winder winds up the traction rope 103, so that the traction rope 103 pulls the forearm positioning member 2 close to the upper arm positioning member 1, so that the patient's forearm folds toward the upper arm. The winding mechanism releases the traction rope 103, so that the patient's forearm is away from the upper arm, so that the patient's forearm is continuously folded back and forth through the continuous winding and releasing of the winding mechanism, so that the patient's forearm is always in motion through the reciprocating folding, thereby avoiding numbness of the patient's arm due to long-term static state. The device in the present invention is worn on the patient's upper limbs through the upper arm positioning member 1 and the lower arm positioning member 2, and can move with the movement of the patient's upper limbs, without the need for the patient's arm to cooperate with the position of the device, and the pressure sensor connecting the curved plate 3 can sense the pressure of the patient's elbow on the connecting curved plate 3 after the patient's forearm is folded. The closer the patient's forearm is to the upper arm, the greater the degree of folding of the patient's elbow, and the greater the pressure of the elbow part on the connecting curved plate 3. By setting a critical value on the pressure sensor, the upper limit of the folding of the patient's forearm can be limited to avoid the patient's arm folding too much and causing the dialysis equipment to be misplaced on the arm. The present invention uses the retracting and releasing method of the traction rope 103 to make the forearm slowly and uniformly move away from the upper arm, avoiding the problem of the initial starting speed being large during the folding process when driven by a cylinder or other driving method, and the initial traction force on the patient's arm is large, and the vibration caused to the patient's arm is large, which easily causes the dialysis equipment on the patient's arm to fall off. The forearm positioning member 2 of the present invention massages the patient's forearm muscles through a massage unit, thereby increasing the blood circulation of the patient's forearm, relieving muscle pressure, and avoiding convulsions of the forearm due to long-term exercise. The massage unit can also be adjusted in position, making the muscle massage at the forearm position more comprehensive.

[0039] As a further solution of the present invention, the boom positioning member 1 is a short semicircular plate with a notch on the top and an upper pressure plate 101 is arranged above it. A plurality of positioning screws 104 are symmetrically installed on the lower end of the upper pressure plate 101. The positioning screws 104 are rotatably connected to the upper pressure plate 101 and are threadedly connected to the boom positioning member 1. A fixing nut 105 is arranged on the lower surface of the boom positioning member 1 at a position corresponding to the positioning screw 104.

[0040] During operation, the connecting curved plate 3 is placed at the patient's elbow position, and then the upper arm positioning piece 1 is clamped onto the patient's upper arm from the lower side of the patient's upper arm, and then the upper pressure plate 101 is moved close to the upper arm positioning piece 1 from the upper side of the patient's upper arm, and the upper arm positioning piece 1 and the upper pressure plate 101 are fixed and fixed to the patient's upper arm through the positioning screw 104 and the fixing nut 105, so that the upper arm positioning piece 1 can be suitable for patients of different body shapes.

[0041] As a further solution of the present invention, the winding mechanism includes a winding shaft 102, which is symmetrically arranged on both sides of the upper end of the boom positioning member 1 and is rotatably connected to the boom positioning member 1. One end of the traction rope 103 is fixed on the winding shaft 102, and the other end is fixed to the upper end of the forearm positioning member 2 through the connecting seat 6. A transmission member 106 is arranged between the winding shafts 102 on the same side. The transmission member 106 is composed of two sets of transmission gears and a transmission chain sleeved on the outside of the transmission gear. The transmission gear is fixedly installed on the winding shaft 102. A bidirectional motor is arranged in the boom positioning member 1, and the bidirectional motor can drive the winding shaft 102 to rotate.

[0042] During operation, the bidirectional motor drives the reel 102 to rotate. The bidirectional motor rotates forward so that the reel 102 reels the traction rope 103, so that the traction rope 103 pulls the forearm positioning member 2 close to the upper arm positioning member 1. The bidirectional motor rotates backward so that the reel 102 unwinds the traction rope 103, so that the traction rope 103 drives the forearm positioning member 2 away from the upper arm positioning member 1. The transmission member 106 makes the reel 102 on the same side rotate synchronously, ensuring that the traction effect of the reel 102 on the traction rope 103 is more stable.

[0043] As a further solution of the present invention, the forearm positioning member 2 is a semi-elliptical curved plate and the length of the plate body is close to the length of the human forearm. Side connecting plates 5 are fixedly installed on both sides of the upper end of the forearm positioning member 2. The inner sides of the side connecting plates 5 are slidably connected with mounting seats 17. A positioning rod 18 is threadedly connected to the mounting seat 17. One end of the positioning rod 18 can pass through the mounting seat 17 and abut against the side connecting plate 5. An upper protective curved plate 4 is fixedly connected between the symmetrically arranged mounting seats 17. The upper protective curved plate 4 is an elastic plate and can automatically approach the surface of the patient's arm. A plurality of groups of support rods 19 are evenly arranged on the lower surface of the upper protective curved plate 4. A hemispherical rubber block is arranged at the lower end of the support rod 19. A plurality of groups of through holes 11 are arranged on the forearm positioning member 2.

[0044] During operation, the patient's forearm is inserted between the forearm positioning piece 2 and the upper protective curved plate 4. The upper protective curved plate 4 is close to the upper surface of the ring forearm under the action of elasticity, so that the hemispherical rubber block of the support rod 19 is in contact with the patient's skin surface. The dialysis catheter is located between the support rods 19. The dialysis catheter is limited by the support rods 19 to prevent the dialysis catheter from falling or being misplaced when the patient's arm moves. The support rods 19 can also prevent the upper protective curved plate 4 from pressing on the surface of the dialysis catheter while limiting the dialysis catheter, so as to prevent the upper protective curved plate 4 from pressing and limiting the blood circulation in the dialysis catheter.

[0045] As a further solution of the present invention, the massage unit includes a lower connecting rod 7, a rotating shaft 16 and a moving assembly. The lower connecting rod 7 is arranged on the lower side of the forearm positioning member 2. Multiple groups of limit seats 8 are fixedly installed on the lower connecting rod 7 and the multiple groups of limit seats 8 are evenly distributed. A limit groove 21 is opened on the lower surface of the forearm positioning member 2 corresponding to the position of the limit seat 8, and the limit seat 8 is slidably connected to the limit groove 21.

[0046] During operation, the lower connecting rod 7 slides in the limiting groove 21 through the limiting seat 8, so that the lower connecting rod 7 moves on the lower side of the forearm positioning member 2.

[0047] As a further solution of the present invention, the rotating shaft 16 is located on the upper side of the forearm positioning member 2, each group of massage units is provided with two groups of rotating shafts 16 and the rotating shafts 16 on both sides are adjacently arranged, massage rollers 12 are fixedly installed on the rotating shafts 16, upper positioning plates 15 are provided at both ends of the rotating shafts 16, side threaded rods 14 are rotatably installed on the lower side of the upper positioning plates 15, lower positioning plates 13 are provided at both ends of the lower connecting rod 7, the lower positioning plates 13 are threadedly connected to the side threaded rods 14, and a driving assembly is provided on the upper positioning plate 15. The driving assembly can drive the adjacent rotating shafts 16 to rotate relative to each other. The driving assembly consists of limit gears, driving gears and rotating motors that are meshed with each other on both sides. The limit gears are fixedly installed on the rotating shafts 16 and meshed with each other. The rotating motor is fixedly installed on the upper positioning plate 15 and the output end is fixedly connected to the driving gear, and the driving gear is meshed with the limit gears on one side.

[0048] During operation, the rotating motor drives the gear and the limit gear to make the adjacent rotating shafts 16 rotate relative to each other. The rotation of the rotating shafts 16 drives the massage rollers 12 to rotate relative to each other to massage the patient's forearm muscles. The relative rotation of the adjacent massage rollers 12 can accurately squeeze and knead the patient's arm muscles.

[0049] As a further solution of the present invention, the moving component includes a traction shaft 20, which is rotatably mounted on the lower surface of the side connecting plate 5 close to the corresponding massage unit. Multiple groups of upper connecting rods 10 are rotatably mounted on the traction shaft 20. The lower end of the upper connecting rod 10 is rotatably mounted with a lower connecting rod 9, and the lower end of the lower connecting rod 9 is rotatably mounted on a limit seat 8. A drive motor is fixedly mounted on one side of the side connecting plate 5, and the drive motor can drive the traction shaft 20 to rotate.

[0050] During operation, the upper connecting rod 10 is pulled by rotating the traction shaft 20, and the upper connecting rod 10 pulls the lower connecting rod 9, and the lower connecting rod 9 drives the limiting seat 8 to slide in the limiting groove 21, and the sliding of the limiting seat 8 drives the lower connecting rod 7 to move, and the movement of the lower connecting rod 7 drives the rotating shaft 16 to move on the upper side of the forearm positioning member 2, so as to change the massage point of the massage roller 12 on the patient's forearm, and the reciprocating rotation of the traction shaft 20 drives the reciprocating movement of the lower connecting rod 7 to change the massage point of the massage roller 12 on the forearm, so that the patient's forearm can be fully massaged.

[0051] An adjustable hemodialysis auxiliary method, the specific steps of the adjustable hemodialysis auxiliary method are as follows:

[0052] Step 1: insert the patient's forearm between the forearm positioning member 2 and the upper protective curved plate 4, and place the dialysis hose between the support rods 19;

[0053] Step 2: Place the connecting curved plate 3 at the patient's elbow, and then clip the upper arm positioning piece 1 onto the patient's upper arm from the lower side of the patient's upper arm;

[0054] Step 3: Then move the upper pressing plate 101 from the upper side of the patient's upper arm close to the upper arm positioning member 1, and fix the upper arm positioning member 1 and the upper pressing plate 101 on the patient's upper arm through the positioning screw 104 and the fixing nut 105;

[0055] Step 4: The reel 102 periodically reciprocates to cause the traction rope 103 to periodically pull the forearm positioning member 2, thereby causing the patient's forearm to be folded toward and away from the patient's upper arm slowly and slightly;

[0056] Step 5: The rotating shaft 16 rotates to massage the patient's forearm muscles, and the lower connecting rod 7 moves to adjust the massage position of the rotating shaft 16.

Claims

1. An adjustable hemodialysis auxiliary support, comprising an upper arm positioning member (1) and a lower arm positioning member (2), characterized in that: A connecting curved plate (3) and a traction assembly are provided between the upper arm positioning member (1) and the lower arm positioning member (2): A connecting curved plate (3), wherein two ends of the connecting curved plate (3) are respectively fixedly mounted on the upper arm positioning member (1) and the lower arm positioning member (2), the connecting curved plate (3) can contact the patient's elbow, and a pressure sensor is arranged inside the connecting curved plate (3), and the pressure sensor can detect the bending degree of the patient's elbow; A traction assembly, the traction assembly comprising a traction rope (103) and a reeling mechanism, the reeling mechanism being arranged at the upper end of the upper arm positioning member (1), one end of the traction rope (103) being fixed to the lower arm positioning member (2), and the other end being arranged on the reeling mechanism, the reeling mechanism being able to pull the lower arm positioning member (2) close to the upper arm positioning member (1) through the traction rope (103); The forearm positioning member (2) is provided with a massage component, which is composed of two groups of symmetrically arranged massage units. The massage units are located below the forearm positioning member (2) and can slide along the lower inner wall of the forearm positioning member (2).

2. The adjustable hemodialysis auxiliary support according to claim 1, characterized in that: The upper arm positioning member (1) is a short semicircular plate with a notch on the top and an upper pressure plate (101) is arranged above it. A plurality of positioning screws (104) are symmetrically mounted on the lower end of the upper pressure plate (101). The positioning screws (104) are rotatably connected to the upper pressure plate (101) and are threadedly connected to the upper arm positioning member (1). A fixing nut (105) is arranged on the lower surface of the upper arm positioning member (1) at a position corresponding to the positioning screw (104).

3. The adjustable hemodialysis auxiliary support according to claim 2, characterized in that: The winding mechanism comprises a winding shaft (102), wherein the winding shaft (102) is symmetrically arranged on both sides of the upper end of the upper arm positioning member (1) and is rotatably connected to the upper arm positioning member (1); one end of the traction rope (103) is fixed on the winding shaft (102), and the other end is fixed to the upper end of the lower arm positioning member (2) through a connecting seat (6); a transmission member (106) is arranged between the winding shafts (102) on the same side; the transmission member (106) is composed of two groups of transmission gears and a transmission chain sleeved on the outer side of the transmission gear; the transmission gear is fixedly mounted on the winding shaft (102); a bidirectional motor is arranged in the upper arm positioning member (1); and the bidirectional motor can drive the winding shaft (102) to rotate.

4. The adjustable hemodialysis auxiliary support according to claim 3, characterized in that: The forearm positioning member (2) is a semi-elliptical curved plate and the length of the plate body is close to the length of the human forearm. Side connecting plates (5) are fixedly installed on both sides of the upper end of the forearm positioning member (2). The inner sides of the side connecting plates (5) are slidably connected to mounting seats (17). A positioning rod (18) is threadedly connected to the mounting seat (17). One end of the positioning rod (18) can pass through the mounting seat (17) and abut against the side connecting plate (5). An upper protective curved plate (4) is fixedly connected between the symmetrically arranged mounting seats (17). The upper protective curved plate (4) is an elastic plate and can automatically approach the surface of the patient's arm. A plurality of groups of support rods (19) are evenly arranged on the lower surface of the upper protective curved plate (4). A hemispherical rubber block is arranged at the lower end of the support rod (19). A plurality of through holes (11) are arranged on the forearm positioning member (2).

5. The adjustable hemodialysis auxiliary support according to claim 4, characterized in that: The massage unit comprises a lower connecting rod (7), a rotating shaft (16) and a moving assembly, wherein the lower connecting rod (7) is arranged on the lower side of the forearm positioning member (2), a plurality of groups of limit seats (8) are fixedly mounted on the lower connecting rod (7), and the plurality of groups of limit seats (8) are evenly distributed, a limit slot (21) is provided on the lower surface of the forearm positioning member (2) corresponding to the position of the limit seat (8), and the limit seat (8) is slidably connected to the limit slot (21).

6. The adjustable hemodialysis auxiliary support according to claim 5, characterized in that: The rotating shaft (16) is located on the upper side of the forearm positioning member (2), each group of the massage units is provided with two groups of the rotating shafts (16) and the rotating shafts (16) on both sides are arranged adjacent to each other, the rotating shafts (16) are fixedly mounted with massage rollers (12), both ends of the rotating shafts (16) are provided with upper positioning plates (15), the lower side of the upper positioning plates (15) is rotatably mounted with side threaded rods (14), both ends of the lower connecting rod (7) are provided with lower positioning plates (13), the lower positioning plates (13) and the lower connecting rods (15) are connected to the lower connecting rods (15) and the lower connecting rods (15) are connected to the lower connecting rods (15). The side threaded rod (14) is threadedly connected, and a driving assembly is arranged on the upper positioning plate (15). The driving assembly can drive the adjacent rotating shaft (16) to rotate relative to each other. The driving assembly is composed of a limit gear, a driving gear and a rotating motor that are meshed with each other on both sides. The limit gears are fixedly mounted on the rotating shaft (16) and meshed with each other. The rotating motor is fixedly mounted on the upper positioning plate (15) and the output end is fixedly connected to the driving gear. The driving gear is meshed with the limit gear on one side.

7. The adjustable hemodialysis auxiliary support according to claim 6, characterized in that: The moving assembly comprises a traction shaft (20), the traction shaft (20) being rotatably mounted on the lower surface of a side connecting plate (5) close to a corresponding massage unit, a plurality of groups of upper connecting rods (10) being rotatably mounted on the traction shaft (20), a lower connecting rod (9) being rotatably mounted on the lower end of the upper connecting rod (10), the lower end of the lower connecting rod (9) being rotatably mounted on the limit seat (8), a driving motor being fixedly mounted on one side of the side connecting plate (5), and the driving motor being capable of driving the traction shaft (20) to rotate.

8. An adjustable hemodialysis auxiliary method, applicable to the adjustable hemodialysis auxiliary support according to any one of claims 1 to 7, characterized in that: The specific steps of the adjustable hemodialysis auxiliary method are as follows: Step 1: insert the patient's forearm between the forearm positioning piece (2) and the upper protective curved plate (4), and place the dialysis hose between the support rods (19); Step 2: Place the connecting curved plate (3) at the patient's elbow, and then clip the upper arm positioning piece (1) onto the patient's upper arm from the lower side of the patient's upper arm; Step 3: Then, the upper pressing plate (101) is moved closer to the upper arm positioning member (1) from the upper side of the patient's upper arm, and the upper arm positioning member (1) and the upper pressing plate (101) are fixed to the patient's upper arm by means of the positioning screw (104) and the fixing nut (105); Step 4: The reel (102) periodically reciprocates to cause the traction rope (103) to periodically pull the forearm positioning member (2), thereby causing the patient's forearm to be slowly folded toward and away from the patient's upper arm; Step 5: The rotating shaft (16) rotates to massage the patient's forearm muscles, and the lower connecting rod (7) moves to adjust the massage position of the rotating shaft (16).

Images