Arm fixing and protecting device for hemodialysis

Abstract

The utility model relates to the field of medical auxiliary devices, in particular to an arm fixing and protecting device for hemodialysis, which comprises an arm protecting component, a tube protecting component and a posture adjusting component. The arm protection assembly is provided with a first air bag, a first arm protection block and a second arm protection block, the first arm protection block and the second arm protection block can clamp and protect an arm, the second arm protection block is driven by expansion of the first air bag to slide, the tube protection assembly is provided with an upper protection plate and a lower protection plate which can clamp and protect a dialysis catheter, and the lower protection plate is fixedly connected to the upper portion of the first arm protection block. The posture adjusting assembly is provided with a second air bag and a spring, is hinged to the lower portion of the arm protection assembly and can drive the arm protection assembly to swing front and back. The first air bag and the second air bag which are provided with the air inlet and the air outlet which are controlled by the electromagnetic valves are used for driving the second arm protection block to slide and driving the arm protection assembly to slightly swing respectively, so that a patient can independently clamp the arm and adjust the tightness degree, and the posture of the arm can be slightly changed for simple movement; therefore, the convenience and the comfort of the operation of the patient during dialysis can be improved.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary devices, specifically to an arm fixation and protection device for hemodialysis. Background Technology

[0002] Hemodialysis involves creating a dialysis pathway in a blood vessel to draw blood out of the body, filter out toxins and water using a dialysis machine, and then return the blood to the body through the pathway. The hemodialysis pathway is the necessary connection between the patient's blood vessels and the dialysis machine. Currently, there are roughly three types: autogenous arteriovenous fistula (AVF), artificial arteriovenous fistula (AVG), and central venous catheter (CVC). AVF and AVG create a fistula in a superficial blood vessel in the patient's arm and connect it to the dialysis machine via a dialysis catheter. Therefore, it is crucial to immobilize and protect the patient's arm and catheter during dialysis to prevent arm movement or pressure from foreign objects that could affect dialysis effectiveness. While some devices exist to restrict arm movement or prevent catheter compression during dialysis, most are complex. Some require nursing assistance, such as clamping or binding the arm, which the patient cannot easily adjust independently. Others, with the arm bound or otherwise immobilized, prevent simple movements, thus affecting the ease of operation and patient comfort. Therefore, it is necessary to improve the arm fixation and protection device for hemodialysis. If it can be made simple to operate, allowing patients to clamp their arms and adjust the tightness independently, and also allowing them to slightly change their posture and perform simple movements after clamping, the convenience of operation and the patient's comfort will be improved. This is the problem to be solved in this case. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model discloses an arm fixation and protection device for hemodialysis, including an arm support assembly, a tubing support assembly, and a posture adjustment assembly. The arm support assembly includes a first airbag and a first and second arm support block that can clamp and protect the arm. The second arm support block is slidable by the expansion of the first airbag. The tubing support assembly includes an upper and lower protective plate that can clamp and protect the dialysis catheter. The lower protective plate is fixed above the first arm support block. The posture adjustment assembly includes a second airbag and a spring. The posture adjustment assembly is hinged below the arm support assembly and can drive the arm support assembly to swing back and forth. This utility model improves the arm fixation and protection device for hemodialysis by using a first and second airbag, equipped with an air inlet and an air outlet controlled by a solenoid valve, to drive the second arm support block to slide and the arm support assembly to swing slightly. This allows the patient to independently clamp and adjust the tightness of their arm, and to slightly change their arm posture for simple movements, thereby improving the convenience and comfort of the patient during dialysis.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A kind of arm fixing protection device for hemodialysis, characterized in that: including arm protection assembly, pipe protection assembly and posture adjustment assembly, the arm protection assembly is equipped with air bag and the fixed block and movable block of the arm protection that can be clamped, and movable block is driven to slide by air bag inflation, the pipe protection assembly is equipped with the two pieces of protection board of split structure that can be clamped and protect dialysis catheter, arm protection assembly is fixedly connected above the fixed block of arm protection assembly, the posture adjustment assembly is equipped with air bag and elastic element, and posture adjustment assembly is hinged below arm protection assembly and can drive arm protection assembly to swing back and forth.

[0006] The arm protection assembly includes holder, first arm protection block, second arm protection block and first air bag, the first arm protection block, second arm protection block and first air bag are all placed on the holder, the first arm protection block is fixed block, which is fixedly connected to one side of the holder, the first air bag is fixedly connected to the other side of the holder, and the second arm protection block is movable block, which is placed between the first arm protection block and the first air bag and is slidingly connected to the holder.

[0007] The first arm protection block and the second arm protection block are both in the shape of half block, each of which is provided with an arc-shaped groove on one side face, and the opening of the arc-shaped groove of the first arm protection block is opposite to the opening of the arc-shaped groove of the second arm protection block.

[0008] The holder is in a half-enclosed structure, which is enclosed by a bottom wall, one side wall and a top wall, and is provided with a sliding groove on the half of the top wall and the bottom wall close to the side wall, the second arm protection block can be embedded in the sliding groove of the holder and can slide left and right in the sliding groove, the first arm protection block is fixedly connected to the half of the bottom wall of the holder away from the side wall, and the first air bag is placed in the half-enclosed cavity of the holder and is fixedly connected to the side wall of the holder, which can be inflated and can drive the second arm protection block to move towards the first arm protection block when inflated.

[0009] The arm protection assembly further includes a flexible inner liner, the flexible inner liner is two pieces, and the two pieces of flexible inner liner are respectively applied to the inner walls of the arc-shaped grooves of the first arm protection block and the second arm protection block, and the flexible inner liner is preferably made of medical soft silicone to simulate the shape of an arm and form a wrapping material that can cover an arm.

[0010] The pipe protection assembly comprises an upper protection plate, a lower protection plate and pipe clamp half-rings, the upper protection plate and the lower protection plate are both flat plates, the upper protection plate is arranged above the lower protection plate, the lower protection plate is fixedly connected to the first arm block, the lower surface of the upper protection plate and the upper surface of the lower protection plate are each provided with two semicircular recesses, the two semicircular recesses of the upper protection plate correspond to the two semicircular recesses of the lower protection plate, and when the upper protection plate covers the lower protection plate, the two semicircular recesses on the upper and lower surfaces of the upper protection plate can be combined into two circular holes, the two circular holes are arranged in the shape of an "eight", the diameters of the two circular holes are respectively greater than the diameters of the two branch pipes of the hemodialysis catheter, the pipe clamp half-rings are half-rings obtained by cutting a circular elastic silicone ring in half, the pipe clamp half-rings are arranged in several pieces, two pipe clamp half-rings are arranged as a group, the two pipe clamp half-rings in each group can be spliced into a complete ring, and the spliced ring can clamp the branch pipes of the hemodialysis catheter, and the pipe clamp half-rings are arranged in the semicircular recesses of the upper protection plate and the lower protection plate in a one-to-one correspondence.

[0011] The pipe protection assembly further comprises hinges and a lock, one side of the upper protection plate and the lower protection plate is hingedly connected by the hinges, and the other side of the upper protection plate and the lower protection plate is buckled by the lock.

[0012] The posture adjusting assembly comprises a base plate, a second air bag, a spring and a hinge support, the hinge support is arranged in two pieces, the hinge shaft center lines of the two hinge supports are concentric and are arranged on the left and right sides of the middle part of the base plate, the spring and the second air bag are arranged on the front half and the rear half of the upper part of the base plate and are fixedly connected to the base plate, the bottom part of the hinge support is fixedly connected to the base plate, and the top part of the hinge support is fixedly connected to the bottom wall of the holder.

[0013] The posture adjusting assembly further comprises a fixed connecting piece, the fixed connecting piece is arranged in one piece or several pieces, one end of the fixed connecting piece is fixedly connected to the base plate, and the other end of the fixed connecting piece is clamped or detachably locked to a fixed object around the patient.

[0014] The first air bag and the second air bag are each provided with an air inlet and an air outlet controlled by a solenoid valve, and the air inlets are connected to an external compressed gas source.

[0015] As described above, the advantages of the arm fixation and protection device for hemodialysis provided by this utility model are as follows: the arm guard assembly for clamping and protecting the arm is hinged above the posture adjustment assembly for fine-tuning the arm posture, and the tube protector assembly for clamping and protecting the dialysis catheter is fixed above the arm guard assembly. The arm guard assembly has a fixed first arm guard block and a slidable second arm guard block. The second arm guard block is driven to slide by a first airbag. The posture adjustment assembly has a second airbag and a spring. Firstly, the first airbag, equipped with an air inlet and an air outlet controlled by a solenoid valve, drives the second arm guard block to slide, allowing the patient to independently clamp and adjust the tightness of the arm, improving the convenience of operation during dialysis. Secondly, the repeated air intake and exhaust of the second airbag, equipped with an air inlet and an air outlet controlled by a solenoid valve, and the repeated extension and retraction of the spring, allow the patient to repeatedly and slightly swing the arm guard assembly during hemodialysis when necessary, slightly changing the arm posture for simple movements, avoiding numbness and discomfort caused by prolonged immobility of the arm, thus improving the patient's comfort during dialysis. This utility model has a reasonable design, simple structure, low cost, and is easy to promote. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an arm fixation and protection device for hemodialysis according to the present invention;

[0017] Figure 2 for Figure 1 AA diagram in the image;

[0018] Figure 3 for Figure 1 A schematic diagram of direction B in the diagram;

[0019] Figure 4 This is an enlarged schematic diagram of the arm guard assembly;

[0020] Figure 5 This is an enlarged schematic diagram of the support.

[0021] Figure 6 This is an enlarged schematic diagram of the tube protection assembly;

[0022] Figure 7 for Figure 6 A magnified view of CC in the diagram;

[0023] Figure 8 This is an enlarged schematic diagram of the attitude adjustment component;

[0024] Figure 9 for Figure 8 A magnified diagram of direction D in the diagram.

[0025] Figure label:

[0026] 1. Arm guard assembly; 11. Support; 111. Slide groove; 12. First arm guard block; 13. Second arm guard block; 14. First airbag; 15. Flexible liner; 2. Tube guard assembly; 21. Upper guard plate; 22. Lower guard plate; 23. Tube clamp semi-ring plate; 24. Hinge; 25. Lock; 3. Posture adjustment assembly; 31. Base plate; 32. Second airbag; 33. Spring; 34. Hinge support; 35. Fixed connector. Detailed Implementation

[0027] The present invention will be further described below through specific embodiments.

[0028] like Figures 1 to 3 As shown, the present invention provides a hemodialysis arm fixation and protection device, comprising an arm support assembly 1, a tubing support assembly 2, and a posture adjustment assembly 3. The arm support assembly 1 is provided with an airbag and a fixed block and a movable block that can clamp and protect the arm, and the movable block is driven to slide by the expansion of the airbag. The tubing support assembly 2 is provided with two protective plates with a split structure that can clamp and protect the dialysis catheter. The tubing support assembly 2 is fixed above the fixed block of the arm support assembly 1. The posture adjustment assembly 3 is provided with an airbag and an elastic element. The posture adjustment assembly 3 is hinged below the arm support assembly 1 and can drive the arm support assembly 1 to swing back and forth.

[0029] like Figures 1 to 5 As shown, the arm guard assembly 1 of this utility model includes a support 11, a first arm guard block 12, a second arm guard block 13, a first airbag 14, and a flexible inner liner 15. The first arm guard block 12, the second arm guard block 13, and the first airbag 14 are all placed on the support 11. The first arm guard block 12 is a fixed block, fixedly connected to one side of the support 11. The first airbag 14 is fixedly connected to the other side of the support 11. The second arm guard block 13 is a movable block, placed between the first arm guard block 12 and the first airbag 14, and slidably connected to the support 11. Both the first arm guard block 12 and the second arm guard block 13 are shaped like split blocks, each having an arc-shaped groove on one side. The opening of the arc-shaped groove in the first arm guard block 12 is opposite to the opening of the arc-shaped groove in the second arm guard block 13. The support 11 is a semi-enclosed structure, consisting of a bottom wall, a side wall, and a top wall. A groove 111 is provided on the half of the top and bottom walls adjacent to the side wall. The second arm protector 13 can be embedded in the groove 111 of the support 11 and can slide left and right within the groove 111. The first arm protector 12 is fixed to the half of the bottom wall of the support 11 away from the side wall. The first airbag 14 is placed in the semi-enclosed cavity of the support 11 and fixed to the side wall of the support 11. When inflated, the first airbag 14 expands and can drive the second arm protector 13 towards the side of the first arm protector 12. Two flexible inner liners 15 are provided, respectively applied to the inner walls of the arc-shaped grooves of the first arm protector 12 and the second arm protector 13. In this embodiment, the flexible inner liners 15 are made of medical soft silicone, modeled after the shape of an arm, to cover the arm.

[0030] As Figures 1 to 7 shown, the pipe protection assembly 2 includes an upper protection plate 21, a lower protection plate 22, a pipe clamp half ring 23, a hinge 24 and a lock 25. The upper protection plate 21 and the lower protection plate 22 are both flat plates. The upper protection plate 21 is placed above the lower protection plate 22. The lower protection plate 22 is fixedly connected to the first arm block 12. The lower surface of the upper protection plate 21 and the upper surface of the lower protection plate 22 are each provided with two semicircular recesses. The two semicircular recesses of the upper protection plate 21 correspond to the two semicircular recesses of the lower protection plate 22. When the upper protection plate 21 covers the lower protection plate 22, the two semicircular recesses on the upper protection plate 21 and the lower protection plate 22 can be combined into two circular holes. The two circular holes are arranged in the shape of an "eight". The diameters of the two circular holes are greater than the diameters of the two branch pipes of the hemodialysis catheter. The pipe clamp half ring 23 is a half ring obtained by cutting a circular elastic silicone ring in half. The pipe clamp half ring 23 is provided with a plurality of pieces. Two pieces of the pipe clamp half ring 23 form a group. The two pieces of the pipe clamp half ring 23 in each group can be spliced into a complete ring. The spliced ring can clamp the branch pipes of the hemodialysis catheter. The plurality of pieces of the pipe clamp half ring 23 are dispersedly arranged in the semicircular recesses of the upper protection plate 21 and the lower protection plate 22. The pipe clamp half ring 23 arranged in the semicircular recesses of the upper protection plate 21 and the lower protection plate 22 corresponds to the semicircular recesses.

[0031] As Figures 1 to 9 shown, the posture adjusting assembly 3 includes a bottom plate 31, a second air bag 32, a spring 33, a hinge support 34 and a fixed connecting piece 35. The hinge support 34 is provided with two pieces. The hinge shaft center lines of the two pieces of the hinge support 34 are concentric and are respectively arranged on the left and right sides of the middle part of the bottom plate 31. The spring 33 and the second air bag 32 are respectively arranged on the front half part and the rear half part above the bottom plate 31 and are fixedly connected to the bottom plate 31. The bottom part of the hinge support 34 is fixedly connected to the bottom plate 31. The top part of the hinge support 34 is fixedly connected to the bottom wall of the pedestal 11. The fixed connecting piece 35 is provided with one piece or a plurality of pieces. One end of the fixed connecting piece 35 is fixedly connected to the bottom plate 31. The other end of the fixed connecting piece 35 can be clamped or detachably locked to a fixed object around the patient. The fixed connecting piece 35 of the present example is an elastic clamp which is clamped to the guardrail of the patient's bed. The first air bag 14 and the second air bag 32 are each provided with an air inlet and an air outlet controlled by an electromagnetic valve. The air inlets are connected to an external compressed air source. The electromagnetic valves can be controlled by a remote control switch or a wired switch.

[0032] The arm fixing protection device can be fixed on the fixed object around the patient by the fixed connecting piece 35 when in use; the air inlets of the first air bag 14 and the second air bag 32 are communicated with the external compressed air source through electromagnetic valves, and the air outlets of the first air bag 14 and the second air bag 32 are communicated with the atmosphere through electromagnetic valves; the dialysis catheter of the dialysis machine is connected with the vascular fistula on the arm before dialysis, and the arm is placed between the first arm block 12 and the second arm block 13 of the arm protection assembly 1; the patient uses the remote control switch or the wired switch to start controlling the electromagnetic valve of the first air bag 14 by the other hand, so that the first air bag 14 is inflated and expanded, the second arm block 13 is driven to move to the side of the first arm block 12, and the flexible inner liner 15 on both sides is in contact with and covers the arm, so that the arm movement is limited and the arm is protected; the electromagnetic valve is closed and the first air bag 14 is continuously pressure maintained; the two branch pipes of the dialysis catheter are placed in the pipe clamp half ring piece 23 in the two semicircular recesses of the lower arm plate 22 of the pipe protection assembly 2, and the upper arm plate 21 is covered and locked, so that the two branch pipes of the dialysis catheter are clamped and protected by the pipe protection assembly 2; the dialysis machine is started, and the patient can be dialyzed.

[0033] If the tightness of the clamped arm needs to be adjusted, the air inlet or air outlet of the first air bag 14 can be changed to adjust the tightness.

[0034] The arm fixing protection device for blood dialysis is improved, the arm protection assembly 1 for clamping and protecting the arm is hinged above the posture adjusting assembly 3 for fine adjusting the arm posture, the pipe protection assembly 2 for clamping and protecting the dialysis catheter is fixed above the arm protection assembly 1, the arm protection assembly 1 is provided with the fixed first arm block 12 and the slidable second arm block 13, the second arm block 13 is driven to slide by the first air bag 14, the posture adjusting assembly 3 is provided with the second air bag 32 and the spring 33, the first air bag 14 and the second air bag 32 provided with the air inlets and air outlets controlled by electromagnetic valves are used to drive the second arm block 13 to slide and the arm protection assembly 1 to slightly swing respectively, so that the patient can clench the arm and adjust the tightness, and the arm posture can be slightly changed for simple movement, thereby the convenience and comfort of the patient during dialysis can be improved.

[0035] The above is only one specific embodiment of the utility model, but the design concept of the utility model is not limited to this, and any non-essential change of the utility model by using the concept should belong to the behavior of infringing the protection range of the utility model.

Claims

1. A hemodialysis arm fixation and protection device, characterized in that: The device includes an arm protector assembly (1), a tube protector assembly (2), and a posture adjustment assembly (3). The arm protector assembly (1) is equipped with an airbag and a fixed block and a movable block that can clamp and protect the arm. The movable block is driven to slide by the airbag. The tube protector assembly (2) is equipped with two protective plates that can clamp and protect the dialysis catheter. The tube protector assembly (2) is fixed above the fixed block of the arm protector assembly (1). The posture adjustment assembly (3) is equipped with an airbag and an elastic element. The posture adjustment assembly (3) is hinged below the arm protector assembly (1) and can drive the arm protector assembly (1) to swing back and forth.

2. The arm fixation and protection device for hemodialysis according to claim 1, characterized in that: The arm guard assembly (1) includes a support (11), a first arm guard block (12), a second arm guard block (13), and a first airbag (14). The first arm guard block (12), the second arm guard block (13), and the first airbag (14) are all placed on the support (11). The first arm guard block (12) is a fixed block, which is fixed to one side of the support (11). The first airbag (14) is fixed to the other side of the support (11). The second arm guard block (13) is a movable block, which is placed between the first arm guard block (12) and the first airbag (14) and is slidably connected to the support (11).

3. The arm fixation and protection device for hemodialysis according to claim 2, characterized in that: The first arm guard block (12) and the second arm guard block (13) are each provided with an arc-shaped groove on one side, and the opening of the arc-shaped groove of the first arm guard block (12) is opposite to the opening of the arc-shaped groove of the second arm guard block (13).

4. The arm fixation and protection device for hemodialysis according to claim 3, characterized in that: The support (11) is a semi-enclosed structure, which is formed by a bottom wall, a side wall and a top wall. A groove (111) is provided on the half of the top wall and bottom wall that is close to the side wall. The second guard block (13) can be embedded in the groove (111) of the support (11) and can slide left and right in the groove (111). The first guard block (12) is fixed to the half of the bottom wall of the support (11) that is away from the side wall. The first airbag (14) is placed in the semi-enclosed cavity of the support (11) and fixed to the side wall of the support (11).

5. The arm fixation and protection device for hemodialysis according to claim 4, characterized in that: The arm guard assembly (1) further includes a flexible inner liner (15), which consists of two flexible inner liners (15), which are respectively laid on the inner wall of the arc-shaped groove of the first arm guard block (12) and the second arm guard block (13).

6. The arm fixation and protection device for hemodialysis according to claim 5, characterized in that: The pipe protector assembly (2) includes an upper protector plate (21), a lower protector plate (22), and a pipe clamp semi-ring plate (23). Both the upper protector plate (21) and the lower protector plate (22) are flat plates. The upper protector plate (21) is placed above the lower protector plate (22). The lower surface of the upper protector plate (21) and the upper surface of the lower protector plate (22) are each provided with two semi-circular arc grooves. The two semi-circular arc grooves of the upper protector plate (21) correspond one-to-one with the two semi-circular arc grooves of the lower protector plate (22). When the upper protector plate (21) covers the lower protector plate (22), the two semi-circular arc grooves on the upper and lower surfaces are respectively provided. The semi-circular grooves can be combined into two circular holes. The tube clamp semi-ring pieces (23) are provided in several pieces. Every two tube clamp semi-ring pieces (23) are set as a group. The two tube clamp semi-ring pieces (23) in each group can be assembled into a complete ring and the assembled ring can clamp the branch tube of the hemodialysis catheter. The several tube clamp semi-ring pieces (23) are distributed in the semi-circular grooves of the upper protective plate (21) and the lower protective plate (22), and the tube clamp semi-ring pieces (23) arranged in the semi-circular grooves of the upper protective plate (21) and the lower protective plate (22) correspond one-to-one.

7. The arm fixation and protection device for hemodialysis according to claim 6, characterized in that: The tube protector assembly (2) further includes hinges (24) and latches (25). One side of the upper protector plate (21) and the lower protector plate (22) is hinged by several hinges (24), and the other side of the upper protector plate (21) and the lower protector plate (22) is fastened by openable latches (25).

8. The arm fixation and protection device for hemodialysis according to claim 7, characterized in that: The posture adjustment component (3) includes a base plate (31), a second airbag (32), a spring (33), and a hinge support (34). The hinge support (34) consists of two pieces, which are concentric and placed on the left and right sides of the middle of the base plate (31). The spring (33) and the second airbag (32) are placed on the front and rear halves of the base plate (31) and are fixed to the base plate (31). The bottom of the hinge support (34) is fixed to the base plate (31), and the top of the hinge support (34) is fixed to the bottom wall of the support (11).

9. The arm fixation and protection device for hemodialysis according to claim 8, characterized in that: The posture adjustment component (3) further includes a fixing connector (35), which is provided as one or more. One end of the fixing connector (35) is fixed to the base plate (31), and the other end of the fixing connector (35) can be clamped or detachably locked to a fixed object around the patient.

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