Arm supporting frame for hemodialysis

Abstract

The arm supporting frame comprises a supporting block of a square structure, a mounting base used for being connected with a sickbed is mounted below the supporting block, a containing groove of an arc-shaped structure is formed in the upper surface of the supporting block, and two limiting frames are rotationally mounted on the upper surface of the supporting block through hinges; an extrusion air bag is fixedly mounted on the inner surface of the upper end of the limiting frame, an arm of a patient is extruded and fixed through expansion of the extrusion air bag, and the extrusion air bag is communicated with a connecting hose with a one-way air blowing air bag. According to the arm supporting frame for hemodialysis, the novel structural design is adopted, a ventilation mechanism is arranged, an air blower is started in the using process of the arm supporting frame, external air is conveyed into a supporting block through the air blower, and therefore air flow is formed, and the flowing air is conveyed to the arm position of a patient through air holes; therefore, discomfort of the skin of a patient caused by stuffiness in the long-time use process is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hemodialysis tools, in particular to an arm support frame for hemodialysis. Background Art

[0002] Hemodialysis is a method of treating renal failure. It uses a machine to replace the function of the kidneys and remove waste and excess water from the body. During the dialysis process, the patient's blood passes through the dialyzer and a special filter membrane to remove waste and water from the blood. The treated blood is then returned to the patient's body. Hemodialysis needs to be performed regularly. During hemodialysis, blood is generally delivered from the patient's arm, so the patient's arm needs to be supported and fixed during the process to avoid accidents caused by random movement.

[0003] In the prior art, a Chinese patent with authorization announcement number CN216908784U discloses a patient arm support bracket for hemodialysis, and its technical solution is: it includes a bearing platform, and an adjustment mechanism is provided at the top and bottom of the bearing platform; the adjustment mechanism includes a movable plate, a fixed plate is fixedly connected to the top of the bearing platform, and the fixed plate and one side of the movable plate are fixedly connected to a fixed block, and the two fixed blocks are movably hinged through bearings, and the fixed plate and both sides of the top of the movable plate are fixedly connected with elastic bandages, and a support platform is provided at the bottom of the bearing platform, and limiting rods are fixedly connected at the four corners of the bottom of the bearing platform, and limiting grooves are provided at the four corners of the top of the support platform, and the limiting rods are arranged inside the limiting grooves and movably connected to the support platform, which effectively solves the problem that the existing arm bracket cannot adjust the arm when fixing the patient's arm, thereby limiting the practicality of the arm bracket.

[0004] During use, the above-mentioned device uses a support platform to support and fix the patient's arm position. However, in actual use, each hemodialysis takes a long time (4-5 hours). At this time, the patient's arm is always fixed inside the support platform, and the skin contact position has poor air permeability, causing discomfort to the patient, and in severe cases, pressure sores may occur.

[0005] In the prior art, a Chinese patent with authorization announcement number CN218685667U discloses an arm fixing bracket for hemodialysis, which relates to the technical field of hemodialysis and solves the problem in the prior art that the hemodialysis bracket cannot be fixed and can only support the arm but cannot fix the dialysis pipeline, resulting in needle dislocation. The bracket has the beneficial effects of fixing the entire bracket, adjusting the bracket height and fixing the dialysis pipeline at the same time. The specific scheme is as follows: an arm fixing bracket for hemodialysis, comprising a support plate, the bottom of the support plate is rotatably connected to the horizontal section of the arc-shaped support frame, a sleeve is arranged on the peripheral side of the vertical section of the arc-shaped support frame, the sleeve is fixed to the vertical section through a fixing member, one end of the sleeve is fixed to a socket, a pipe clamp is arranged on the outer side of the arc-shaped support frame, fixing belts are arranged on both sides of the support plate, and the fixing belts are slidably matched with the support plate.

[0006] The above device uses a fixing belt to fix the patient's arm during use, but in actual use, the patient's arm needs to be connected to a blood transfusion line, and the above device does not have any measures to fix the blood transfusion line. When medical staff or family members walk around and accidentally touch the blood transfusion line, the line may be subjected to external force and may fall off. Summary of the invention

[0007] The object of the present invention is to provide an arm support for hemodialysis to solve the problems in the above-mentioned background technology that poor air permeability affects comfort and the fixation effect of blood transfusion vessels is poor.

[0008] To achieve the above object, the present invention provides the following technical solution: an arm support frame for hemodialysis, comprising a support block with a square structure, a mounting base for connecting a bed is installed below the support block, and an arc-shaped placement groove is provided on the upper surface of the support block, and further comprising:

[0009] The upper surface of the support block is rotatably mounted with two limit frames by means of hinges, and an extrusion airbag is fixedly mounted on the inner surface of the upper end of the limit frame, and the patient's arm is squeezed and fixed by the expansion of the extrusion airbag, and the extrusion airbag is connected to a connecting hose with a one-way inflation airbag;

[0010] A sponge protective pad is fixedly installed on the lower surface of the placement groove, and a ventilation mechanism is installed inside the support block, which uses the ventilation mechanism to generate air flow to ensure the ventilation effect of the patient's arm position;

[0011] The blood pipeline led out from the patient's arm passes through the upper surface of the limiting frame, and a buffer mechanism is installed on the upper surface of the limiting frame. The buffer mechanism is used to provide buffer force for protection when the blood pipeline is pulled by external force.

[0012] Preferably, the ventilation mechanism includes a blower fixedly installed in the middle position inside the support block and air holes equidistantly arranged on the upper surface of the support block, and the air outlet pipe of the blower corresponds to the positions of the air holes in the upper and lower parts.

[0013] Preferably, an electric heating wire is fixedly mounted on the inner wall of the support block above the blower, and the air inlet pipe of the blower is connected to the outside of the support block, and a diverter pipe is fixedly mounted in the middle position of the air inlet pipe.

[0014] Preferably, a sealing chamber is provided on the inner side of the support block, and a communication structure is formed between the sealing chamber and the diversion pipe.

[0015] Preferably, a rubber sealing piston is slidably mounted on the inner wall of the sealing chamber, a return spring is fixedly mounted between the lower surface of the sealing piston and the bottom surface of the sealing chamber, and a conveying hose connected to the extrusion airbag is fixedly mounted on the upper end of the sealing chamber.

[0016] Preferably, the buffer mechanism comprises a positioning clamp installed on the upper surface of the limiting frame, and the positioning clamp is snap-connected with the blood pipeline, and a guide wheel for guiding the blood pipeline is rotatably installed on the upper surface of the limiting frame.

[0017] Preferably, the lower surface of the positioning clamp is fixedly mounted on a sliding block that drives it to move, and a sliding structure is formed between the sliding block and a limiting sliding groove provided on the upper surface of the limiting frame.

[0018] Preferably, a guide slide bar which is connected to the sliding block through and fixedly installed inside the limiting slide groove, and a buffer spring which contacts the side surface of the limiting slide groove is installed on the outer surface of the guide slide bar.

[0019] Preferably, a fixing block is fixedly mounted on the lower surface of the mounting base, and an extrusion plate with a serrated surface is provided inside the fixing block, and an adjusting bolt threadedly connected to the fixing block is rotatably mounted on the lower surface of the extrusion plate.

[0020] Preferably, an adjusting slider is fixedly mounted on the lower surface of the support block, and a sliding structure is formed between the adjusting slider and an adjusting sliding groove provided on the upper surface of the mounting base.

[0021] Compared with the prior art, the beneficial effects of the present invention are: the arm support frame for hemodialysis adopts a new structural design, and its specific contents are as follows:

[0022] 1. A ventilation mechanism is provided. When the device is in use, the blower is turned on to transport the external air into the support block, thereby forming air flow. The flowing air is transported to the patient's arm through the air vents, thereby avoiding discomfort to the patient's skin due to stuffiness during long-term use;

[0023] Furthermore, during operation, the blower utilizes the shunt pipe to extract the air inside the sealed chamber, thereby reducing the air pressure in the sealed chamber. At this time, the sealing piston moves downward under the action of negative pressure, thereby extracting part of the air inside the extrusion airbag through the delivery hose, reducing the pressure of the extrusion airbag, avoiding long-term high pressure causing discomfort to the patient's arm, and the intermittent expansion and contraction of the extrusion airbag can achieve a certain massage effect.

[0024] 2. Clamp and position the blood tube used in the hemodialysis process. First, use the positioning splint to clamp and fix the blood tube so that the front section of the blood tube is kept above the limit frame to avoid entanglement, and use the guide wheel to guide the direction of the blood tube;

[0025] Furthermore, a buffer mechanism is provided under the positioning splint, and the positioning splint can slide above the limiting slide groove, squeezing the buffer spring during the sliding process. At this time, the elastic effect of the buffer spring can achieve the buffering purpose and prevent the blood pipe from falling off when receiving external force.

[0026] 3. The mounting base can be installed on the side of the bed or the side of the seat using a fixing block to adapt to more usage environments, and the relative position between the support block and the mounting base can be adjusted left and right by sliding between the adjusting slider and the adjusting slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a front view structural schematic diagram of the present invention;

[0029] Figure 3 This is a schematic diagram of the bottom surface structure of the support block of the present invention;

[0030] Figure 4 It is a schematic diagram of the top view structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the side cross-sectional structure of the support block of the present invention;

[0032] Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0033] Figure 7 It is a schematic diagram of the structure of the limiting frame of the present invention;

[0034] Figure 8 It is a schematic diagram of the cross-sectional structure of the position-limiting slideway of the present invention;

[0035] Fig. 9 For the present invention Figure 8 Enlarged structural diagram at B in the middle.

[0036] In the figure: 1. support block; 2. mounting base; 3. placement slot; 4. limit frame; 5. extrusion airbag; 6. connecting hose; 7. blowing airbag; 8. protective pad; 9. blower; 10. air vent; 11. air outlet pipe; 12. air inlet pipe; 13. electric heating wire; 14. shunt pipe; 15. sealing chamber; 16. sealing piston; 17. reset spring; 18. delivery hose; 19. positioning splint; 20. blood pipeline; 21. guide wheel; 22. sliding block; 23. limit slide groove; 24. guide slide rod; 25. buffer spring; 26. fixing block; 27. extrusion plate; 28. adjusting bolt; 29. ​​adjusting slider; 30. adjusting slide groove. DETAILED DESCRIPTION

[0037] 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.

[0038] Embodiment 1

[0039] See also Figure 1 , Figure 4-Figure 6In order to solve the problem of patient discomfort caused by poor air permeability during use of the device, this embodiment provides the following technical solutions, a ventilation mechanism is set, and a blower 9 is turned on during use of the device to generate air flow, thereby improving the overall air permeability of the device, and specifically discloses: a support block 1 with a square structure, and a mounting base 2 for connecting to a hospital bed is installed below the support block 1, and an arc-shaped placement groove 3 is opened on the upper surface of the support block 1, two limit frames 4 are installed on the upper surface of the support block 1 by hinge rotation, and an extrusion airbag 5 is fixedly installed on the inner surface of the upper end of the limit frame 4, and the patient's arm is squeezed and fixed by expanding the extrusion airbag 5, and the extrusion airbag 5 is connected to a connecting hose 6 with a one-way blowing airbag 7; a sponge protective pad 8 is fixedly installed on the lower surface of the placement groove 3, and a ventilation mechanism is installed inside the support block 1, and air flow is generated by the ventilation mechanism And ensure the ventilation effect of the patient's arm position; the ventilation mechanism includes a blower 9 fixedly installed in the middle position of the support block 1 and air holes 10 arranged at equal intervals on the upper surface of the support block 1, and the air outlet pipe 11 of the blower 9 corresponds to the position of the air holes 10 up and down, and an electric heating wire 13 is arranged above the blower 9 and fixedly installed on the inner wall of the support block 1, and the air inlet pipe 12 of the blower 9 is connected to the outside of the support block 1, and a shunt pipe 14 is fixedly installed in the middle position of the air inlet pipe 12, a sealing chamber 15 is opened on the inner side of the support block 1, and a connecting structure is formed between the sealing chamber 15 and the shunt pipe 14, a rubber sealing piston 16 is slidably installed on the inner wall of the sealing chamber 15, and a return spring 17 is fixedly installed between the lower surface of the sealing piston 16 and the bottom surface of the sealing chamber 15, and a conveying hose 18 connected to the extrusion airbag 5 is fixedly installed on the upper end of the sealing chamber 15.

[0040] When using the device, first fix the device to the side of the bed or the chair, then the patient places the hand in the placement groove 3 on the upper surface of the support block 1, then rotate the limit frame 4 to cover the patient's arm and fix it with bolts, then the medical staff holds the blowing airbag 7 to transport air to the inside of the squeezing airbag 5 through the connecting hose 6, at this time the squeezing airbag 5 expands to squeeze and fix the patient's arm, during use, the blower 9 inside the support block 1 is turned on at a fixed time, when the blower 9 is turned on, the air inlet pipe 12 discharges the external air through the air outlet pipe 11, and the discharged air reaches the patient's arm position through the air vent 10 (when the weather is cold, the electric heating wire 13 can be turned on to achieve the purpose of heating). ), thereby improving the overall air permeability of the device, part of the air opened by the blower 9 is inhaled through the shunt tube 14, at this time, the shunt tube 14 draws out the air at the bottom end of the sealed chamber 15, so that the sealing piston 16 moves downward under the action of negative pressure. During the downward movement of the sealing piston 16, negative pressure is formed at the upper end of the sealed chamber 15, and part of the air inside the extrusion airbag 5 is extracted through the delivery hose 18, thereby reducing the pressure of the extrusion airbag 5. At this time, the patient's arm can move slightly, further improving the ventilation effect, and because the blower is turned on periodically, the extrusion airbag 5 contracts and expands intermittently, which can massage the patient's arm to a certain extent.

[0041] Embodiment 2

[0042] See also Figure 1 , Figure 4 , Figure 7-Figure 9 In order to solve the problem that the blood pipe 20 is easy to fall off when being pulled by external force, this embodiment provides the following technical solutions: a buffer mechanism is set, the blood pipe 20 is first clamped and positioned, and then a certain buffer force is provided by using the elasticity of the spring to prevent the blood pipe 20 from falling off. Specifically, the blood pipe 20 led out from the patient's arm passes through the upper surface of the limit frame 4, and the buffer mechanism is installed on the upper surface of the limit frame 4. The buffer mechanism is used to provide buffer force for protection when the blood pipe 20 is pulled by external force. The buffer mechanism includes a spring installed on the limit frame 4. A positioning splint 19 is arranged on the upper surface, and the positioning splint 19 is engaged with the blood pipeline 20, and a guide wheel 21 is rotatably installed on the upper surface of the limiting frame 4 to guide the blood pipeline 20, and a sliding block 22 is fixedly installed on the lower surface of the positioning splint 19 to drive it to move, and a sliding structure is formed between the sliding block 22 and a limiting slide groove 23 provided on the upper surface of the limiting frame 4, a guide slide rod 24 which is connected to the sliding block 22 through the guide slide rod 22 is fixedly installed inside the limiting slide groove 23, and a buffer spring 25 which contacts the side of the limiting slide groove 23 is installed on the outer surface of the guide slide rod 24.

[0043] When the medical staff connects the blood tube 20 to the patient's arm, the front end of the blood tube 20 is engaged with the positioning clamp 19 for fixing, and then the blood tube 20 is arranged on the upper surface of the limiting frame 4 along the position of the guide wheel 21. When the medical staff or family members walk nearby and accidentally touch the blood tube 20, the blood tube 20 is pulled to a certain extent. Under the action of the pulling force, the sliding block 22 under the positioning clamp 19 slides inside the limiting slide groove 23. At this time, the sliding block 22 squeezes the buffer spring 25 outside the guide slide rod 24, and the elastic effect of the buffer spring 25 is used to achieve the purpose of buffering, thereby reducing the pulling force on the blood tube 20 inserted into the arm, thereby avoiding falling off.

[0044] Embodiment 3

[0045] See also Figure 1-Figure 3 In order to solve the problem that the device cannot adapt to a variety of installation environments, this embodiment provides the following technical solutions. After the device is installed, the position can be fine-tuned to adapt to different usage environments. Specifically disclosed is: a fixed block 26 is fixedly installed on the lower surface of the mounting base 2, and an extrusion plate 27 with a serrated surface is provided on the inner side of the fixed block 26, and an adjusting bolt 28 threadedly connected to the fixed block 26 is rotatably installed on the lower surface of the extrusion plate 27, an adjusting slider 29 is fixedly installed on the lower surface of the support block 1, and a sliding structure is formed between the adjusting slider 29 and an adjusting slide groove 30 provided on the upper surface of the mounting base 2.

[0046] When installing the device, first determine the location where it needs to be installed (next to a bed or a chair), then insert the fixing block 26 into the bedside or chair side, and turn the adjusting bolt 28 under the fixing block 26 so that the adjusting bolt 28 drives the extrusion plate 27 to move upward, and finally complete the fixation of the entire device. After the fixation is completed, the support block 1 is pushed according to the position of the patient's arm, so that the adjusting slider 29 under the support block 1 slides inside the adjusting slide groove 30 above the mounting base 2, and the relative position between the support block 1 and the mounting base 2 is adjusted to make it more comfortable for the patient to use.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An arm support frame for hemodialysis, comprising a support block (1) with a square structure, a mounting base (2) for connecting to a hospital bed is installed below the support block (1), and a placement groove (3) with an arc structure is opened on the upper surface of the support block (1), characterized in that: Also includes: The upper surface of the support block (1) is rotatably mounted with two limit frames (4) by means of a hinge, and an extrusion airbag (5) is fixedly mounted on the inner surface of the upper end of the limit frame (4), and the patient's arm is squeezed and fixed by the expansion of the extrusion airbag (5), and the extrusion airbag (5) is connected to a connecting hose (6) with a one-way blowing airbag (7); A sponge protective pad (8) is fixedly mounted on the lower surface of the placement groove (3), and a ventilation mechanism is installed inside the support block (1), which uses the ventilation mechanism to generate air flow to ensure the ventilation effect of the patient's arm position; The blood pipeline (20) led out from the patient's arm passes through the upper surface of the limiting frame (4), and a buffer mechanism is installed on the upper surface of the limiting frame (4). The buffer mechanism is used to provide a buffer force for protection when the blood pipeline (20) is pulled by external force.

2. The hemodialysis arm support according to claim 1, characterized in that: The ventilation mechanism comprises a blower (9) fixedly mounted in the middle of the support block (1) and air holes (10) arranged at equal intervals on the upper surface of the support block (1), and the positions of the air outlet pipe (11) of the blower (9) and the air holes (10) correspond to each other in the upper and lower directions.

3. The hemodialysis arm support according to claim 2, characterized in that: An electric heating wire (13) is arranged above the blower (9) and is fixedly mounted on the inner wall of the support block (1), and the air inlet pipe (12) of the blower (9) is connected to the outside of the support block (1), and a diverter pipe (14) is fixedly mounted in the middle position of the air inlet pipe (12).

4. The hemodialysis arm support according to claim 3, characterized in that: A sealing chamber (15) is provided on the inner side of the support block (1), and a communication structure is formed between the sealing chamber (15) and the diversion pipe (14).

5. The hemodialysis arm support according to claim 4, characterized in that: A rubber sealing piston (16) is slidably mounted on the inner wall of the sealing chamber (15), a return spring (17) is fixedly mounted between the lower surface of the sealing piston (16) and the bottom surface of the sealing chamber (15), and a delivery hose (18) which is in communication with the extrusion airbag (5) is fixedly mounted on the upper end of the sealing chamber (15).

6. The hemodialysis arm support according to claim 1, characterized in that: The buffer mechanism comprises a positioning clamp (19) mounted on the upper surface of the limiting frame (4), and the positioning clamp (19) is snap-connected with the blood pipeline (20), and a guide wheel (21) is rotatably mounted on the upper surface of the limiting frame (4) for guiding the blood pipeline (20).

7. The hemodialysis arm support according to claim 6, characterized in that: The lower surface of the positioning clamping plate (19) is fixedly mounted on a sliding block (22) that drives it to move, and a sliding structure is formed between the sliding block (22) and a limiting sliding groove (23) provided on the upper surface of the limiting frame (4).

8. The hemodialysis arm support according to claim 7, characterized in that: A guide slide bar (24) penetratingly connected to the sliding block (22) is fixedly installed inside the limiting slide groove (23), and a buffer spring (25) in contact with the side of the limiting slide groove (23) is installed on the outer surface of the guide slide bar (24).

9. The hemodialysis arm support according to claim 1, characterized in that: A fixing block (26) is fixedly mounted on the lower surface of the mounting base (2), and an extrusion plate (27) having a sawtooth-shaped surface is arranged inside the fixing block (26), and an adjusting bolt (28) threadedly connected to the fixing block (26) is rotatably mounted on the lower surface of the extrusion plate (27).

10. The hemodialysis arm support according to claim 9, characterized in that: An adjusting slide block (29) is fixedly mounted on the lower surface of the support block (1), and a sliding structure is formed between the adjusting slide block (29) and an adjusting slide groove (30) provided on the upper surface of the mounting base (2).

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