Dialysis dedicated internal fistula protection cover

Abstract

The present application belongs to the technical field of dialysis auxiliary equipment, and relates to a special internal fistula protective cover for dialysis. The present application comprises a seat body, a connecting ring, an intermediate sleeve and side sleeves. The intermediate sleeve is arranged between the two side sleeves, and the intermediate sleeve and the side sleeves are fixedly connected through rubber blocks; a plurality of air bags are fixedly arranged on the inner rings of the side sleeves and the intermediate sleeve, the air bags are columnar, and the axial lines are parallel to the axial line of the placing cylinder. A connecting ring is arranged at the interval between each side sleeve and the intermediate sleeve, and a plurality of protrusions matched with the air bags are fixedly arranged on the inner circumference of each connecting ring. The intermediate sleeve drives the side sleeves to swing, so that the air bags reciprocally move along the circumferential direction of the arm to massage the arm, and the protrusions extrude the air bags to make them expand, so that the air bags extrude and massage the arm. The rotation of the side sleeves is delayed relative to the rotation of the intermediate sleeve, so that the air bags on the side sleeves are staggered with the corresponding air bags on the intermediate sleeve, the massage points and the extrusion frequency of the arm are increased, and the massage effect is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of dialysis auxiliary equipment and relates to a protective cover for dialysis-specific arteriovenous fistulas. Background Technology

[0002] Dialysis is a blood purification technology that uses the principle of a semi-permeable membrane to remove various harmful and excess metabolic wastes and excess electrolytes from the body through diffusion, thereby purifying the blood and correcting electrolyte imbalance.

[0003] The most common site for dialysis is the arteriovenous fistula in the upper limb. Dialysis treatment is a long process, and patients inevitably move during treatment, which can pull on the tubing, leading to needle dislodgement or puncture of blood vessels, causing pain. Therefore, it is necessary to immobilize and protect the patient's arm. However, immobilizing the arm and keeping it in the same position for a long time can easily cause numbness and discomfort, and is not conducive to blood circulation.

[0004] To address the above problems, this invention proposes a protective cover for dialysis-specific arteriovenous fistulas. Summary of the Invention

[0005] To address the problems existing in the background art, the present invention proposes a protective cover for dialysis-specific arteriovenous fistulas.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A dialysis-specific arteriovenous fistula protective cover includes: The base has a placement tube at its upper end; The side sleeve and the middle sleeve are coaxially rotatably installed at both ends of the placement cylinder. The middle sleeve is set between the two side sleeves and is fixedly connected to the side sleeves by rubber blocks. There is rotational damping between the side sleeves and the placement cylinder. Multiple airbags are fixedly installed on the inner rings of the side sleeves and the middle sleeve. The airbags are cylindrical and their axes are parallel to the axis of the placement cylinder. The arm is placed inside the side sleeve and the middle sleeve. The seat is equipped with a swing unit that drives the middle sleeve to swing. The middle sleeve drives the side sleeve to swing, so that the airbag moves back and forth along the circumference of the arm to massage the arm.

[0007] Furthermore, there is a gap between the side sleeve and the middle sleeve, and a connecting ring is provided at each gap between the side sleeve and the middle sleeve. The connecting ring is fixedly connected to the placement cylinder, and multiple protrusions are fixed on the inner circumference of each connecting ring. The protrusions cooperate with the airbag, so that the airbag moves back and forth along the circumference of the arm. The protrusions squeeze the airbag to inflate it, and the airbag squeezes and massages the arm.

[0008] Furthermore, the airbags on the side sleeve correspond one-to-one with the airbags on the middle sleeve, and the airbags on the side sleeve and the corresponding airbags on the middle sleeve are on the same straight line; on the same connecting ring, there are two airbags distributed between each protrusion; the protrusions on the two connecting rings are staggered.

[0009] Furthermore, the connecting ring is provided with a liquid inlet channel that extends into the through hole. The part of the protrusion facing the center of the placement cylinder and the part facing the gap of the adjacent airbag are provided with multiple through holes that communicate with the liquid inlet channel. The base is provided with a disinfection box and a water pump. The disinfection box is connected to the water pump inlet, and the water pump outlet is connected to the liquid inlet channel through a hose, and a control valve is installed on the hose.

[0010] Furthermore, the lower part of the base has a mounting cavity, and the swing unit is disposed in the mounting cavity; the swing unit includes a sector plate and a second tooth; the sector plate is rotatably disposed on the base, and a first tooth is provided on the arc-shaped end face of the sector plate, and a second tooth is fixedly provided on the lower end of the intermediate sleeve, and the second tooth meshes with the first tooth.

[0011] Furthermore, a connecting seat is provided on one side of the base, and a first connecting plate is fixedly connected to one end of the connecting seat; a second connecting plate is fixedly connected to one side of the base, and a sliding hole is provided on the second connecting plate; the first connecting plate extends through the sliding hole into the mounting cavity, and the first connecting plate slides with the base; a limit frame is fixedly connected to one end of the first connecting plate that extends into the mounting cavity; a connecting rod is fixedly connected to the other end of the sector plate, and a guide post is rotatably connected to the end of the connecting rod away from the sector plate; a limit hole is provided on the limit frame, and the guide post is slidably disposed in the limit hole.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. During the left-right swinging process of the middle sleeve, the airbag swings back and forth along the circumference of the arm, massaging the arm.

[0013] 2. When the airbag rotates, the protrusions squeeze the airbag, causing it to expand and increasing the squeezing force on the arm, thus squeezing and massaging the arm.

[0014] 3. The rotation of the side sleeve is delayed relative to the rotation of the middle sleeve, causing the airbags on the side sleeve to be misaligned with the corresponding airbags on the middle sleeve. This increases the number of massage points on the arm and the frequency of compression, which helps to improve the massage effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of the first connecting plate in this invention; Figure 4This is a schematic diagram of the limiting frame in this invention; Figure 5 This is a schematic diagram of the sector plate in this invention; Figure 6 This is a schematic diagram of the intermediate sleeve in this invention; Figure 7 This is a schematic diagram of the connection between the side sleeve and the middle sleeve in this invention; Figure 8 This is a schematic diagram of the connecting ring structure in this invention; Figure 9 In this invention Figure 8 Enlarged view of part A; Figure 10 This is a distribution diagram of the protrusions on a single connecting ring in this invention; Figure 11 This is a schematic diagram showing the staggered distribution of protrusions on the two connecting rings in this invention; Figure 12 This is a front view of the placement cylinder in this invention.

[0016] In the diagram: 1. Base; 2. First connecting plate; 3. Connecting seat; 4. Second connecting plate; 5. Side sleeve; 6. Airbag; 7. Protrusion; 8. First connecting rod; 9. Water pump; 10. Disinfection box; 11. Limiting frame; 12. Through hole; 13. Liquid inlet channel; 14. Intermediate sleeve; 15. Connecting ring; 16. Rubber block; 17. Fixing frame; 18. First tooth; 19. Connecting rod; 20. Guide column; 21. Control valve; 22. Sector plate; 23. Second tooth. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] like Figures 1-12 As shown, the technical solution adopted by the present invention is as follows: a dialysis-specific fistula protective cover, including a base 1, a side sleeve 5, an intermediate sleeve 14, and a connecting ring 15.

[0019] The upper part of the base 1 has a placement cylinder. Side sleeves 5 are coaxially rotatably mounted at both ends of the placement cylinder, and there is rotational damping between the side sleeves 5 and the placement cylinder. An intermediate sleeve 14 is disposed between the two side sleeves 5. There is a gap between the side sleeves 5 and the intermediate sleeve 14, and the side sleeves 5 and the intermediate sleeve 14 are fixedly connected by a rubber block 16. The intermediate sleeve 14 is coaxially arranged with the side sleeves 5.

[0020] Multiple airbags 6 are fixedly installed on the inner rings of both the side sleeve 5 and the intermediate sleeve 14. The airbags 6 are cylindrical, and their axes are parallel to the axis of the placement cylinder. The multiple airbags 6 are evenly distributed circumferentially along the axis of the placement cylinder. Each airbag 6 can be individually inflated or deflated. The inflation and deflation of the airbags 6 is prior art and will not be described in detail here. When the arm is placed inside the placement cylinder and the airbags 6 are inflated, the arm is clamped between the multiple airbags 6, thus fixing the arm and preventing bending or accidental movement. In this embodiment, the airbags 6 on the side sleeve 5 and the corresponding airbags 6 on the intermediate sleeve 14 correspond one-to-one, and are aligned on the same straight line.

[0021] When the middle sleeve 14 rotates, it drives the side sleeve 5 to rotate via the rubber block 16. Due to the elasticity of the rubber block 16 and the rotational damping between the side sleeve 5 and the placement cylinder, the side sleeve 5 rotates with a delay relative to the middle sleeve 14. That is, the middle sleeve 14 pulls the rubber block 16, causing it to deform to a certain extent, and then the rubber block 16 drives the side sleeve 5 to rotate. This causes the airbag 6 to rotate along the arm, providing massage along the circumference of the arm.

[0022] A connecting ring 15 is provided at the interval between each side sleeve 5 and the middle sleeve 14. The connecting ring 15 is fixedly connected to the placement cylinder by a fixing bracket 17. Multiple protrusions 7 are fixedly fixed at intervals on the inner circumference of each connecting ring 15, and the protrusions 7 are evenly distributed along the circumference of the placement cylinder's axis. The protrusions 7 cooperate with the airbag 6. When the middle sleeve 14 rotates, because the protrusions 7 are fixed, the airbag 6 is compressed and deformed under the obstruction of the protrusions 7. The airbag 6 expands and deforms, increasing the squeezing force on the arm, providing a squeezing massage, relieving discomfort in the arm, and promoting blood circulation. The gap between the airbag 6 on the middle sleeve 14 and the corresponding airbag 6 on the side sleeve 5 (i.e., two adjacent airbags 6 on the same straight line) is very small, and the rotation angle of the airbag 6 is limited. During the rotation of the airbag 6, the airbag 6 maintains its interaction with the protrusions 7.

[0023] like Figure 9 , Figure 10 As shown, on the same connecting ring 15, two airbags 6 are distributed between two adjacent protrusions 7. The protrusions 7 on the two connecting rings 15 are staggered. This ensures that one end of each airbag 6 is compressed by the protrusion 7, preventing both ends of the airbag 6 from being compressed by the protrusion 7 simultaneously, which would cause the airbag 6 to inflate too much and exert excessive pressure on the arm.

[0024] Because the side sleeve 5 rotates at a later rate than the middle sleeve 14, the airbag 6 on the middle sleeve 14 is compressed before the airbag 6 on the side sleeve 5. That is, the airbag 6 on the middle sleeve 14 applies pressure and massages the arm first, and then the airbag 6 on the side sleeve 5 applies compression and massage to the arm. This increases the number of massage points on the arm and the frequency of compression, which helps to improve massage efficiency and promote blood circulation.

[0025] The lower part of the seat 1 has an installation cavity, which is connected to the placement cylinder. The installation cavity is equipped with a swing unit that drives the middle sleeve 14 to swing. The middle sleeve 14 drives the side sleeve 5 to swing left and right, so that multiple airbags 6 swing back and forth to massage the arm.

[0026] The swing unit includes a sector plate 22 and a second toothed portion 23. A first connecting rod 8 is fixedly installed inside the mounting cavity. The first connecting rod 8 is parallel to the axis of the placement cylinder. The sector plate 22 is coaxially rotatably sleeved on the first connecting rod 8. A first toothed portion 18 is provided on the arc-shaped end face of the sector plate 22, and a second toothed portion 23 is fixedly provided on the lower end of the intermediate sleeve 14, the second toothed portion 23 meshing with the first toothed portion 18. A connecting rod 19 is fixedly connected to the other end of the sector plate 22, and a guide post 20 is rotatably connected to the end of the connecting rod 19 away from the sector plate 22.

[0027] The connecting rod 19 swings back and forth around the first connecting rod 8, which in turn causes the second tooth 23 to swing, the middle sleeve 14 to swing back and forth, and the middle sleeve 14 to drive the side sleeve 5 to swing back and forth, which in turn causes the airbag 6 to move back and forth along the circumference of the arm to massage and relax the arm.

[0028] A connecting seat 3 is provided on one side of the seat body 1, which can be fixedly connected to the hospital bed. A square first connecting plate 2 is fixedly connected to one end of the connecting seat 3. A second connecting plate 4 is fixedly connected to one side of the seat body 1. The second connecting plate 4 has a sliding hole, and the end of the first connecting plate 2 away from the connecting seat 3 extends through the sliding hole into the mounting cavity of the seat body 1. The first connecting plate 2 is slidably engaged with the seat body 1. A limiting frame 11 is fixedly installed on the end of the first connecting plate 2 that extends into the mounting cavity. The limiting frame 11 has a limiting hole, and a guide post 20 is slidably disposed in the limiting hole.

[0029] The arm slides left and right, causing the seat 1 to slide left and right, thereby adjusting the position of the patient's arm and putting the patient in a more comfortable position. When the seat 1 moves left and right relative to the connecting seat 3, the first connecting rod 8 moves left and right. Under the action of the limiting frame 11, the connecting rod 19 swings left and right, thereby causing the sector plate 22 to swing left and right. The sector plate 22 drives the intermediate sleeve 14 to swing left and right.

[0030] A liquid inlet channel 13 is provided on the connecting ring 15, extending into the through hole 12. Multiple through holes 12 communicating with the liquid inlet channel 13 are provided on the part of the protrusion 7 facing the axis of the placement cylinder and on the gap part facing the adjacent airbag 6. A disinfection tank 10 is installed inside the mounting cavity, containing disinfectant. A water pump 9 is installed on the disinfection tank 10, connected to the inlet of the water pump 9. The outlet of the water pump 9 is connected to the liquid inlet channel 13 via a flexible hose, and a control valve 21 is installed on the flexible hose. The water pump 9 delivers the disinfectant from the disinfection tank 10 into the liquid inlet channel 13 and sprays it out through the through hole 12, spraying the disinfectant onto the airbag 6, disinfecting the airbag 6 and the arm. After the water pump 9 stops, some disinfectant remains in the liquid inlet channel 13, which gradually evaporates, keeping the arm continuously in a disinfected environment.

[0031] Working principle: Initially, the airbag 6 is in an uninflated state, and the airbag 6 on the side sleeve 5 and the corresponding airbag 6 on the middle sleeve 14 are on the same straight line.

[0032] The patient inserts their arm into the placement tube, the control valve 21 is opened, and the water pump 9 is started, allowing the disinfectant solution in the disinfection tank 10 to enter the inlet channel 13 and be sprayed out through the through hole 12, disinfecting the arm and the airbag 6. After disinfection, the water pump 9 is stopped, and the control valve 21 is closed. Disinfectant solution remains in the inlet channel 13, which gradually evaporates, keeping the arm continuously in a disinfected environment. Then, the airbag 6 is inflated, causing it to gradually expand, and the arm is clamped between the multiple airbags 6, thus securing the arm.

[0033] When the arm becomes sore and numb due to prolonged holding in one position, the position can be adjusted by moving the arm left and right. The arm moves the seat 1 left and right. The first connecting rod 8 moves left and right, and under the action of the limiting frame 11, the connecting rod 19 swings left and right around the first connecting rod 8, the fan-shaped plate 22 swings left and right, and the fan-shaped plate 22 drives the middle sleeve 14 to swing left and right. The middle sleeve 14 drives the side sleeve 5 to rotate through the rubber block 16, which in turn causes the airbag 6 to rotate along the circumference of the arm, massaging the arm.

[0034] When the airbag 6 rotates back and forth, the protrusion 7 is fixed and squeezes the airbag 6, causing the airbag 6 to expand and deform. The squeezing force of the airbag 6 on the arm increases, thereby squeezing and massaging the arm.

[0035] As the intermediate sleeve 14 rotates the side sleeve 5 via the rubber block 16, rotational damping exists between the side sleeve 5 and the placement cylinder. Furthermore, the rubber block 16 possesses a certain degree of elasticity. When the intermediate sleeve 14 pulls the rubber block 16, the rubber block 16 undergoes elastic deformation. This causes the rubber block 16 to rotate, resulting in misalignment between the airbags 6 on the intermediate sleeve 14 and their corresponding airbags 6 on the side sleeve 5. The airbags 6 on the intermediate sleeve 14 then apply pressure and massage to the arm before the airbags 6 on the side sleeve 5, increasing the frequency and number of massage points, thus enhancing the massage effect and promoting blood circulation.

[0036] After dialysis is completed, deflate the air bag 6 to remove the arm.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protective cover for dialysis-specific arteriovenous fistulas, characterized in that, include: The base (1) has a placement tube at its upper end; Side sleeve (5) and intermediate sleeve (14) are installed coaxially at both ends inside the placement tube. The intermediate sleeve (14) is set between the two side sleeves (5). The intermediate sleeve (14) and the side sleeve (5) are fixedly connected by rubber blocks (16). There is rotational damping between the side sleeve (5) and the placement tube. Multiple airbags (6) are fixedly installed on the inner ring of the side sleeve (5) and the intermediate sleeve (14). The airbags (6) are columnar and their axes are parallel to the axis of the placement tube. The arm is placed inside the side sleeve (5) and the intermediate sleeve (14). The seat (1) is equipped with a swing unit that drives the middle sleeve (14) to swing. The middle sleeve (14) drives the side sleeve (5) to swing, so that the airbag (6) moves back and forth along the circumference of the arm to massage the arm. There is a gap between the side sleeve (5) and the middle sleeve (14). A connecting ring (15) is provided at the gap between each side sleeve (5) and the middle sleeve (14). The connecting ring (15) is fixedly connected to the placement cylinder. Multiple protrusions (7) are fixed on the inner circumference of each connecting ring (15). The protrusions (7) cooperate with the airbag (6) to make the airbag (6) move back and forth along the circumference of the arm. The protrusions (7) squeeze the airbag (6) to make it expand. The airbag (6) squeezes and massages the arm.

2. The dialysis-specific arteriovenous fistula protective cover according to claim 1, characterized in that: The airbags (6) on the side sleeve (5) correspond one-to-one with the airbags (6) on the middle sleeve (14), and the airbags (6) on the side sleeve (5) and the corresponding airbags (6) on the middle sleeve (14) are on the same straight line; on the same connecting ring (15), there are two airbags (6) distributed between each protrusion (7); the protrusions (7) on the two connecting rings (15) are staggered.

3. The dialysis-specific arteriovenous fistula protective cover according to claim 1, characterized in that: The connecting ring (15) is provided with an inlet channel (13), which extends into the through hole (12). The part of the protrusion (7) facing the center of the placement cylinder and the part facing the gap of the adjacent air bag (6) are provided with multiple through holes (12) that communicate with the inlet channel (13). The seat (1) is provided with a disinfection box (10) and a water pump (9). The disinfection box (10) is connected to the water inlet of the water pump (9). The water outlet of the water pump (9) is connected to the inlet channel (13) through a hose, and a control valve (21) is installed on the hose.

4. The dialysis-specific arteriovenous fistula protective cover according to claim 1, characterized in that: The lower part of the base (1) has an installation cavity, and the swing unit is set in the installation cavity; the swing unit includes a fan-shaped plate (22) and a second tooth (23); the fan-shaped plate (22) is rotatably set on the base (1), and a first tooth (18) is provided on the arc-shaped end face of the fan-shaped plate (22), and a second tooth (23) is fixedly provided on the lower end of the intermediate sleeve (14), and the second tooth (23) meshes with the first tooth (18).

5. The dialysis-specific arteriovenous fistula protective cover according to claim 4, characterized in that: A connecting seat (3) is provided on one side of the base (1), and a first connecting plate (2) is fixedly connected to one end of the connecting seat (3); a second connecting plate (4) is fixedly connected to one side of the base (1), and a sliding hole is provided on the second connecting plate (4); the first connecting plate (2) extends through the sliding hole into the mounting cavity, and the first connecting plate (2) slides with the base (1), and a limit frame (11) is fixedly connected to one end of the first connecting plate (2) that extends into the mounting cavity; a connecting rod (19) is fixedly connected to the other end of the fan-shaped plate (22), and a guide post (20) is rotatably connected to one end of the connecting rod (19) away from the fan-shaped plate (22); a limit hole is provided on the limit frame (11), and the guide post (20) is slidably disposed in the limit hole.

Images