Hemodialysis catheter anti-falling fixing device with intelligent alarm function

Abstract

The invention discloses a hemodialysis catheter anti-falling fixing device with an intelligent alarm function in the technical field of hemodialysis equipment, and the hemodialysis catheter anti-falling fixing device comprises elastic binding bands, the elastic binding bands are annular hollow bands, sealing layers are arranged in the hollow bands, and inner partition plates are fixedly mounted between the elastic binding bands; the annular elastic bandage is divided into a small closed ring and a large closed ring by the inner partition plate, a clamping mechanism is installed in the small closed ring, a pressure sensor is fixedly installed on the side, close to the large closed ring, of the inner partition plate, the clamping mechanism comprises a lower clamping piece and an upper clamping piece, and the lower clamping piece and the upper clamping piece can fix a hemodialysis catheter between the lower clamping piece and the upper clamping piece; according to the hemodialysis tube fixing device, the hemodialysis tube fixing device is stably fixed to the arm of a patient through the elastic bandage, the hemodialysis tube is fixed through the clamping mechanism in the elastic bandage, and therefore the hemodialysis tube can synchronously move along with the elastic bandage and the arm of the patient; the positioning firmness of the elastic bandage is monitored by the pressure sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of hemodialysis equipment, and specifically to an anti-detachment fixing device for hemodialysis catheters with an intelligent alarm function. Background Art

[0002] Hemodialysis is a common treatment method in modern medicine. During hemodialysis, the patient's arm is connected to the dialysis equipment through a hemodialysis tube set. There are many dialysis tubes in the set, which are prone to entanglement and pulling. This not only makes it inconvenient for medical staff to operate, but may even cause the hemodialysis tube to separate from the patient's arm, resulting in the termination of dialysis and harming the patient's physical health.

[0003] In modern medicine, positioning devices are generally set up to position the hemodialysis tubes to prevent the tubes from shifting or detaching from the patient's arm. A common simple positioning method is to paste the hemodialysis tubes on the patient's arm with medical tape, etc. The tape has poor air permeability, and its adhesiveness deteriorates in summer when sweating, so its positioning ability for the hemodialysis tubes is limited, and it is easy to cause the patient to frequently agitate due to a strong sense of discomfort. In addition to medical tape, fixing the hemodialysis tubes by clamping is also a relatively common method. Before positioning the hemodialysis tubes in this way, a stable positioning point needs to be determined for the clamping device itself first. Usually, the clamping device is fixed on the medical bed. After the clamping device fixes the hemodialysis tubes, the movement range of the patient's arm will be limited. Once the movement range is too large, it will instead make the hemodialysis tubes more likely to detach from the arm, and these positioning devices all lack a warning system for the detachment and offset of the hemodialysis tubes. Summary of the Invention

[0004] The technical problem of the present invention is to provide an anti-detachment fixing device for hemodialysis catheters with an intelligent alarm function, and by injecting an appropriate amount of air into an elastic band, it can be stably fixed on the patient's arm, and the clamping mechanism in the elastic band fixes the hemodialysis tubes, so that the hemodialysis tubes can move synchronously with the elastic band and the patient's arm. The positioning firmness of the elastic band is monitored by a pressure sensor.

[0005] To achieve the above object, the present invention provides the following technical solution: A hemodialysis catheter anti-detachment fixing device with intelligent alarm function, including an elastic strap. The elastic strap is a circular hollow strap with a sealing layer inside the hollow. An inner partition is fixedly installed between the elastic straps. The inner partition divides the circular elastic strap into a small closed loop and a large closed loop. A clamping mechanism is installed in the small closed loop, and the patient's arm can pass through the large closed loop. A pressure sensor is fixedly installed on one side of the inner partition close to the large closed loop, and a level is fixedly installed on both sides of the inner partition. The clamping mechanism includes a lower clamping part and an upper clamping part. The lower clamping part and the upper clamping part can fix the hemodialysis catheter between them. An adjustment component is arranged on the upper clamping part. The adjustment component consists of a suction part and a gas pipe group. The suction part can adjust the tightness of the elastic strap and the clamping gap between the upper clamping part and the lower clamping part through the gas pipe group.

[0006] As a further scheme of the present invention, the upper clamping part and the lower clamping part are symmetrically arranged up and down, and semi-circular grooves with opposite openings are arranged in the middle position. The lower clamping part is fixedly installed in the middle on the upper surface of the inner partition. Outer positioning blocks are fixedly installed at both ends of the lower clamping part, and inner positioning blocks are fixedly installed at both ends of the upper surface of the lower clamping part. Installation grooves are opened at the positions corresponding to the inner positioning blocks on the upper clamping part. When the upper clamping part and the lower clamping part are attached, the upper ends of the inner positioning blocks can pass through the installation grooves and extend out. Embedding grooves are symmetrically opened on both sides of the upper clamping part, and embedding blocks are fixedly installed at the positions corresponding to the embedding grooves on the lower clamping part.

[0007] As a further scheme of the present invention, the suction part is fixedly installed on the upper surface of the upper clamping part. A suction pump and a sealing valve are arranged inside the suction part. A plurality of groups of lower clamping rollers are equidistantly installed in the semi-circular groove of the lower clamping part, and a plurality of groups of upper clamping rollers are equidistantly arranged in the semi-circular groove of the upper clamping part. The lower clamping rollers are fixedly connected with the lower clamping part, and the upper clamping rollers are slidably connected with the upper clamping part.

[0008] As a further scheme of the present invention, the gas pipe group includes a sleeve pipe and a connecting pipe. Sleeve pipes are fixedly installed at the positions corresponding to both ends of the upper clamping rollers on the upper surface of the upper clamping part. Connecting hoses are fixedly installed at the upper ends of the sleeve pipes. The other ends of the connecting hoses are fixedly connected with the suction part. A piston rod is slidably connected inside each sleeve pipe. The lower end of the piston rod passes through the upper clamping part and is fixedly connected with the upper clamping roller. The lower end of the connecting pipe is fixedly connected with the suction part, and the upper end is led into the built-in sealing layer of the elastic strap. Control valves are fixedly installed on both the connecting pipe and the connecting hose.

[0009] As a further solution of the present invention, side connection seats are fixedly installed on the outer positioning blocks, and one side of the side connection seats away from the outer positioning blocks is fixedly connected to the elastic straps.

[0010] As a further solution of the present invention, positioning screws are symmetrically installed on the elastic straps at positions corresponding to the lower clamping members. Threaded holes are coaxially arranged on the outer positioning blocks and the inner positioning blocks. The threaded holes are matched with the positioning screws, and locking nuts are rotatably installed at positions corresponding to the threaded holes on the outer positioning blocks.

[0011] As a further solution of the present invention, magnetic attraction blocks are fixedly installed in both the embedding grooves and the embedding blocks and have opposite magnetic polarities. The inner side of the elastic strap is made of a skin-friendly material.

[0012] As a further solution of the present invention, the level meter adopts a bubble level detection method. The middle end of the inner partition board is a horizontal board. The level meter is fixedly installed on the middle end, and a vibration alarm is fixedly installed at the middle position of the upper end of the elastic strap.

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

[0014] 1. In the present invention, the elastic strap is used as the positioning basis. The patient's arm passes through the large closed loop. The elastic strap and the inner partition board cooperate to clamp and fix the patient's arm. The hemodialysis tube passes through between the upper clamping member and the lower clamping member of the small closed loop, so that when the patient's arm rotates, moves, and folds, the hemodialysis tube can move synchronously with the elastic strap and the patient's arm, avoiding the traction and dropping of the hemodialysis tube due to the movement of the patient's arm. Moreover, in the way of fixing the hemodialysis tube with medical glue in the past, both the hemodialysis tube and the adhesive tape itself need to be directly attached to the patient's skin surface, reducing the discomfort of the patient during hemodialysis. And the elastic strap and the inner partition board are wound around the arm, which can avoid the easy dropping of the past adhesive tape after sweating.

[0015] 2. In the present invention, the tightness of the elastic strap is controlled by the suction member to control the amount of gas introduced into the elastic strap (the larger the size of the closed loop, the more gas is input into the elastic strap. The tightness is controlled by gas introduction, which is convenient for adjusting the tightness of the elastic strap when the patient's arm swells during the later stage of hemodialysis to increase the comfort of the patient before and after hemodialysis). The pressure sensor below the inner partition board abuts against the surface of the patient's arm. The greater the pressure sensed by the pressure sensor, the tighter the elastic strap is fixed on the patient's arm, and the greater the pressure of the pressure sensor. Thus, the stability of the hemodialysis tube positioning can be detected in real time through the pressure sensor, and the level meter on the side of the inner partition board can detect the levelness of the inner partition board, so as to judge the inclination angle of the hemodialysis tube in the upper clamping member. Description of the Drawings

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the present invention from the bottom view perspective;

[0019] Figure 3 For the present invention Figure 2 It is a partial schematic diagram of the structure at A in the present invention;

[0020] Figure 4 It is a schematic diagram of the disassembled structure of the clamping mechanism in the present invention;

[0021] Figure 5 It is a schematic diagram of the combined structure of the clamping mechanism in the present invention;

[0022] Figure 6 It is a sectional view of the structure of the clamping mechanism in the present invention.

[0023] In the drawings, the list of components represented by each reference numeral is as follows:

[0024] 1. Elastic binding strap; 2. Positioning screw; 3. Lower clamping member; 4. Upper clamping member; 5. Inner partition; 6. Suction member; 7. Sleeve pipe; 8. Pressure sensor; 9. Level gauge; 10. Installation groove; 11. Inner positioning block; 12. Outer positioning block; 13. Lower clamping roller; 14. Embedding groove; 15. Embedding block; 16. Locking nut; 17. Upper clamping roller; 18. Connecting hose; 19. Connecting pipe; 20. Control valve; 21. Side connecting seat. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Please refer to Figures 1-6, the present invention provides a technical solution: a hemodialysis catheter anti-detachment fixing device with an intelligent alarm function, including an elastic strap 1. The elastic strap 1 is a circular hollow strap with a sealing layer inside the hollow. An inner partition 5 is fixedly installed between the elastic straps 1. The inner partition 5 divides the circular elastic strap 1 into a small closed loop and a large closed loop. A clamping mechanism is installed in the small closed loop. The patient's arm can pass through the large closed loop. A pressure sensor 8 is fixedly installed on one side of the inner partition 5 close to the large closed loop. Level gauges 9 are fixedly installed on both sides of the inner partition 5. The clamping mechanism includes a lower clamping member 3 and an upper clamping member 4. The lower clamping member 3 and the upper clamping member 4 can fix the hemodialysis catheter between them. An adjustment assembly is provided on the upper clamping member 4. The adjustment assembly consists of a suction member 6 and a gas pipe group. The suction member 6 can adjust the tightness of the elastic strap 1 and the clamping gap between the upper clamping member 4 and the lower clamping member 3 through the gas pipe group.

[0027] During operation, in the present invention, the elastic strap 1 serves as the positioning basis for the hemodialysis tube. The patient's arm passes through the large closed loop. The elastic strap 1 and the inner partition 5 cooperate to clamp and fix the patient's arm. The hemodialysis tube passes through between the upper clamping member 4 and the lower clamping member 3 of the small closed loop, so that when the patient's arm rotates, moves, and folds, the hemodialysis tube can move synchronously with the elastic strap 1 and the patient's arm, avoiding the traction and dropping of the hemodialysis tube due to the movement of the patient's arm. Moreover, in the way of fixing the hemodialysis tube with medical glue in the past, both the hemodialysis tube and the adhesive tape itself need to be directly attached to the patient's skin surface, reducing the discomfort of the patient during hemodialysis. And the elastic strap 1 and the inner partition 5 are wound around the arm, which can avoid the easy dropping of the past adhesive tape after sweating. The tightness of the elastic strap 1 is controlled by the suction member 6 to introduce the amount of gas into the elastic strap 1 (the larger the amount of gas input into the elastic strap 1, the larger the size of the large closed loop. The tightness is controlled by gas introduction, which is convenient for adjusting the tightness of the elastic strap 1 when the patient's arm swells during the later stage of hemodialysis to increase the comfort of the patient before and after hemodialysis). The pressure sensor 8 below the inner partition 5 abuts against the surface of the patient's arm. The greater the pressure sensed by the pressure sensor 8, the smaller the size of the large closed loop, and the tighter the elastic strap 1 is fixed on the patient's arm, and the greater the pressure monitored by the pressure sensor 8. Therefore, the stability of the fixation of the elastic strap 1 can be monitored in real time through the numerical change of the pressure sensor 8, and then the stability of the positioning of the hemodialysis tube can be monitored. And the level gauge 9 on the side of the inner partition 5 can detect the levelness of the inner partition 5, so as to judge the inclination angle of the hemodialysis tube in the upper clamping member 4.

[0028] As a further solution of the present invention, the upper clamping member 4 and the lower clamping member 3 are symmetrically arranged up and down, and semi-circular grooves with opposite openings are arranged in the middle position. The lower clamping member 3 is fixedly installed in the middle on the upper surface of the inner partition plate 5. Outer positioning blocks 12 are fixedly installed at both ends of the lower clamping member 3, and inner positioning blocks 11 are fixedly installed at both ends of the upper surface of the lower clamping member 3. Installation grooves 10 are formed at the positions corresponding to the inner positioning blocks 11 on the upper clamping member 4. After the upper clamping member 4 and the lower clamping member 3 are attached, the upper ends of the inner positioning blocks 11 can pass through the installation grooves 10 and be led out. Embedding grooves 14 are symmetrically formed on both sides of the upper clamping member 4, and embedding blocks 15 are fixedly installed at the positions corresponding to the embedding grooves 14 on the lower clamping member 3.

[0029] During operation, in the present invention, the upper clamping member 4 and the lower clamping member 3 are connected through the inner positioning blocks 11 and the outer positioning blocks 12. In actual use, the hemodialysis tube is placed in the semi-circular groove of the lower clamping member 3. After the upper clamping member 4 and the lower clamping member 3 approach each other up and down, at this time, the hemodialysis tube is located between the upper clamping member 4 and the lower clamping member 3. The outer positioning blocks 12 of the lower clamping member 3 abut against both sides of the upper clamping member 4, the inner positioning blocks 11 pass through the installation grooves 10, and the embedding blocks 15 in the lower clamping member 3 are embedded into the embedding grooves 14.

[0030] As a further solution of the present invention, the suction member 6 is fixedly installed on the upper surface of the upper clamping member 4. A suction pump and a sealing valve are arranged in the suction member 6. Multiple groups of lower clamping rollers 13 are equidistantly installed in the semi-circular groove of the lower clamping member 3, and multiple groups of upper clamping rollers 17 are equidistantly arranged in the semi-circular groove of the upper clamping member 4. The lower clamping rollers 13 are fixedly connected to the lower clamping member 3, and the upper clamping rollers 17 are slidably connected to the upper clamping member 4.

[0031] During operation, in the present invention, the upper clamping rollers 7 are driven to move downward by the suction member 6, so that the upper clamping rollers 17 abut against the surface of the hemodialysis tube, and the hemodialysis tube is clamped and fixed between the upper clamping member 4 and the lower clamping member 3 by multiple groups of upper clamping rollers 17.

[0032] As a further solution of the present invention, the gas pipe group includes a sleeve pipe 7 and a connecting pipe 19. Sleeve pipes 7 are fixedly installed at the positions corresponding to both ends of the upper clamping rollers 17 on the upper surface of the upper clamping member 4. Connecting hoses 18 are fixedly installed at the upper ends of the sleeve pipes 7. The other ends of the connecting hoses 18 are fixedly connected to the suction member 6. Pistons rods are slidably connected in the sleeve pipes 7. The lower ends of the piston rods pass through the upper clamping member 4 and are fixedly connected to the upper clamping rollers 17. The lower end of the connecting pipe 19 is fixedly connected to the suction member 6, and the upper end is led into the built-in sealing layer of the elastic band 1. Control valves 20 are fixedly installed on both the connecting pipe 19 and the connecting hose 18.

[0033] During operation, in the present invention, gas is input into the elastic band 1 and the sleeve pipe 7 through the gas pipe group. When it is necessary to fix the hemodialysis tube between the upper clamping member 4 and the lower clamping member 3, the control valve 20 on the connecting hose 18 is opened, and the suction pump in the suction member 6 inputs air into the connecting hose 18. The air enters the sleeve pipe 7 through the connecting hose, causing the air to squeeze the movable piston rod to move downward. The piston rod movement pushes the upper clamping roller 17 to move, so that the upper clamping roller 17 abuts against the surface of the hemodialysis tube. When it is necessary to position the elastic band 1 with the patient's arm, the control valve 20 on the connecting pipe 19 is opened, so that air enters the elastic band 1 through the connecting pipe 19, enabling the elastic band 1 to be fixed on the patient's arm with a comfortable tightness.

[0034] As a further solution of the present invention, side connection seats 21 are fixedly installed on the outer positioning blocks 12, and one side of the side connection seat 21 away from the outer positioning block 12 is fixedly connected to the elastic band 1.

[0035] During operation, in the present invention, the lower clamping member 3 is evenly connected to the middle position of the elastic band 1 through the side connection seat, reducing the interference of the deformation of the elastic band 1 on the external force. At the same time, the elastic band 1 wraps the upper clamping member 4 and the lower clamping member 3 inside as an external protection, reducing the interference of the external force on them.

[0036] As a further solution of the present invention, positioning screws 2 are symmetrically installed at positions corresponding to the lower clamping member 3 on the elastic band 1. Threaded holes are coaxially provided on the outer positioning block 12 and the inner positioning block 11, and the threaded holes match the positioning screws 2. A locking nut 16 is rotatably installed at a position corresponding to the threaded hole on the outer positioning block 12.

[0037] During operation, in the present invention, the positions of the upper clamping member 4 and the lower clamping member 3 can be locked through the positioning screws 2 and the locking nuts 16, increasing the firmness of the positioning of the hemodialysis tube between the upper clamping member 4 and the lower clamping member 3.

[0038] As a further solution of the present invention, magnetic blocks are fixedly installed in both the embedding groove 14 and the embedding block 15 and have opposite magnetic polarities. The inner side of the elastic band 1 is made of a skin-friendly material.

[0039] During operation, in the present invention, the skin-friendly material inside the elastic band 1 reduces the possibility of the patient having an allergy during wearing.

[0040] As a further solution of the present invention, the level meter 9 adopts a bubble level detection method. The middle end of the inner partition plate 5 is a horizontal plate, and the level meter 9 is fixedly installed on the middle end. A vibration alarm is fixedly installed at the middle position of the upper end of the elastic band 1.

[0041] During operation, in the present invention, when the pressure sensor 8 detects that the pressure is lower than the set value or the inclination angle of the level meter is abnormal, an alarm is given through the vibration alarm, timely warning the medical staff to adjust the hemodialysis equipment.

[0042] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A hemodialysis catheter anti-detachment fixing device with an intelligent alarm function, comprising an elastic strap (1), characterized in that: The elastic band (1) is a circular hollow band with a sealing layer inside the hollow. An inner partition (5) is fixedly installed between the elastic bands (1). The inner partition (5) divides the circular elastic band (1) into a small closed loop and a large closed loop. A clamping mechanism is installed in the small closed loop. The patient's arm can pass through the large closed loop. A pressure sensor (8) is fixedly installed on one side of the inner partition (5) close to the large closed loop. Level gauges (9) are fixedly installed on both sides of the inner partition (5). The clamping mechanism includes a lower clamping part (3) and an upper clamping part (4). The lower clamping part (3) and the upper clamping part (4) can fix the hemodialysis catheter between them. An adjustment component is arranged on the upper clamping part (4). The adjustment component consists of a suction part (6) and a gas pipe group. The suction part (6) can adjust the tightness of the elastic band (1) and the clamping gap between the upper clamping part (4) and the lower clamping part (3) through the gas pipe group.

2. The anti - shedding fixing device for hemodialysis catheter with intelligent alarm function according to claim 1, characterized in that: The upper clamping part (4) and the lower clamping part (3) are symmetrically arranged up and down, and semi-circular grooves with opposite openings are arranged in the middle position. The lower clamping part (3) is fixedly installed in the middle on the upper surface of the inner partition (5). Outer positioning blocks (12) are fixedly installed at both ends of the lower clamping part (3). Inner positioning blocks (11) are fixedly installed at both ends of the upper surface of the lower clamping part (3). Installation grooves (10) are formed at the positions corresponding to the inner positioning blocks (11) on the upper clamping part (4). After the upper clamping part (4) and the lower clamping part (3) are fitted, the upper ends of the inner positioning blocks (11) can pass through the installation grooves (10) and extend out. Embedding grooves (14) are symmetrically formed on both sides of the upper clamping part (4). Embedding blocks (15) are fixedly installed at the positions corresponding to the embedding grooves (14) on the lower clamping part (3).

3. The anti - detachment fixing device for hemodialysis catheter with intelligent alarm function according to claim 2, characterized in that: The suction part (6) is fixedly installed on the upper surface of the upper clamping part (4). A suction pump and a sealing valve are arranged inside the suction part (6). A plurality of groups of lower clamping rollers (13) are equidistantly installed in the semi-circular groove of the lower clamping part (3). A plurality of groups of upper clamping rollers (17) are equidistantly arranged in the semi-circular groove of the upper clamping part (4). The lower clamping rollers (13) are fixedly connected with the lower clamping part (3). The upper clamping rollers (17) are slidably connected with the upper clamping part (4).

4. The anti - detachment fixing device for hemodialysis catheter with intelligent alarm function according to claim 3, characterized in that: The gas pipe group includes a sleeve pipe (7) and a connecting pipe (19). Sleeve pipes (7) are fixedly installed at the positions corresponding to both ends of the upper clamping rollers (17) on the upper surface of the upper clamping part (4). Connecting hoses (18) are fixedly installed at the upper ends of the sleeve pipes (7). The other ends of the connecting hoses (18) are fixedly connected with the suction part (6). Piston rods are slidably connected inside the sleeve pipes (7). The lower ends of the piston rods pass through the upper clamping part (4) and are fixedly connected with the upper clamping rollers (17). The lower end of the connecting pipe (19) is fixedly connected with the suction part (6), and the upper end is led into the built-in sealing layer of the elastic band (1). Control valves (20) are fixedly installed on both the connecting pipe (19) and the connecting hose (18).

5. The anti - detachment fixing device for hemodialysis catheter with intelligent alarm function according to claim 2, characterized in that: Side connection seats (21) are fixedly installed on the outer positioning blocks (12), and one side of the side connection seats (21) away from the outer positioning blocks (12) is fixedly connected to the elastic strap (1).

6. The anti - shedding fixing device for hemodialysis catheter with intelligent alarm function according to claim 2, characterized in that: Positioning screws (2) are symmetrically installed on the elastic strap (1) corresponding to the positions of the lower clamping members (3). Threaded holes are coaxially provided on the outer positioning blocks (12) and the inner positioning blocks (11), and the threaded holes are matched with the positioning screws (2). Locking nuts (16) are rotatably installed at the positions of the threaded holes on the outer positioning blocks (12).

7. The anti - shedding fixing device for hemodialysis catheter with intelligent alarm function according to claim 2, characterized in that: Magnetic attraction blocks are fixedly installed in both the embedding grooves (14) and the embedding blocks (15) and have opposite magnetic polarities. The inner side of the elastic strap (1) is made of a skin-friendly material.

8. The anti - detachment fixing device for hemodialysis catheter with intelligent alarm function according to claim 5, wherein: The level (9) adopts a bubble level detection method. The middle end of the inner partition plate (5) is a horizontal plate, and the level (9) is fixedly installed on the middle end. A vibration alarm is fixedly installed at the middle position of the upper end of the elastic strap (1).

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