Wearable hemodialysis device for autologous internal arteriovenous fistula

Abstract

The invention relates to a wearable hemodialysis device for autologous internal arteriovenous fistula, which belongs to the technical field of medical instruments and comprises a shoulder fixing sleeve, an arm pipeline protection support, a movement follow-up anti-folding concave pipeline, a fistula orifice protection ring and a portable dialysis machine. According to the wearable hemodialysis device, the wearable hemodialysis device which is provided with a firm sealing connection structure, a movement follow-up protection structure and a convenient disassembly and assembly structure at the same time is arranged, a fixing part which wraps the shoulders and is clamped in an inflation mode is combined with a hanging belt for connection, convenient wearing and firm fixing are achieved, and a conveying pipeline is communicated at the elbow joint through a sealing bearing; and pipeline blockage prevention and movement follow-up protection are realized, so that hands can move normally. A pipeline is connected at an interface by using an electric magnetic card, so that the functions of firm sealing and convenient disassembly are realized, and a specially designed orificium fistulae protection ring clamping sleeve is utilized. Better protection is achieved, and sealing, water prevention and infection prevention are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a wearable hemodialysis device for autologous arteriovenous fistula. Background Art

[0002] Hemodialysis is one of the renal replacement therapies for patients with acute and chronic renal failure. In recent years, the number of patients undergoing dialysis treatment has continued to increase, placing a heavy burden on the healthcare system. Hemodialysis is mainly performed in blood purification centers of medical institutions, 2-3 times a week, each time taking 4 hours. The treatment process consumes electricity and water, and also generates a large amount of medical waste and brings many inconveniences to patients, affecting their quality of life. Therefore, it is more reasonable to use more convenient and cost-saving portable dialysis equipment to treat patients with chronic kidney disease. Therefore, it is extremely important to wear portable dialysis equipment on patients in a stable manner without affecting daily activities and better avoiding external infections.

[0003] Currently, in the prior art, a portable dialysis device is fixed to the patient's upper torso and arms by elastic pressurized fabric, so that the arm maintains a fixed posture with the forearm raised, and then the external interface of the autologous arteriovenous fistula is connected to the external interface of the portable dialysis device by a flexible tube.

[0004] At present, in the prior art, the portable dialysis device is worn on the patient's body by wrapping the patient's torso and arms with elastic pressurized fabric, which makes it extremely troublesome for the patient to put on and take off the device each time. In addition, the connecting pipelines may be pulled and scratched during the putting on and taking off process. The traditional flexible tube connection has low stability at the connection point, and is very easy to fall off or pull the autologous arteriovenous fistula under wearing and pulling, causing great pain to the patient. In addition, in the prior art, in order to prevent the patient's arm swinging and pulling the pipeline during use, the portable dialysis device is worn, so the patient's arm is fixed to restrict the movement of the arm where the autologous arteriovenous fistula is located. However, the long-term fixed posture not only affects the patient's daily movement, but also makes the patient's arm sore and swollen, aggravating the patient's wearing discomfort. In addition, it is difficult to seal the external stoma of the autologous arteriovenous fistula, making it difficult for the patient to bathe and clean the body in daily life. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a wearable hemodialysis device for autologous arteriovenous fistula, which solves the problems in the prior art that the dialysis equipment is difficult to wear and has low stability, the connection at the interface is easy to loosen, the waterproof and anti-fouling performance is poor and it is easy to get infected, and the wearable device cannot swing with the arm, causing the patient to feel strong soreness and discomfort in the arm.

[0006] The present invention is achieved through the following technical solutions:

[0007] A wearable hemodialysis device for autologous arteriovenous fistula comprises a shoulder fixing sleeve, an arm pipeline protection bracket is fixedly provided at the lower end of the shoulder fixing sleeve, a motion-following anti-fracture pipeline is fixedly provided on the inner side of the arm pipeline bracket, a fistula protection ring is provided at the lower end of the arm pipeline protection bracket, a portable dialysis machine is fixedly provided at the middle part of the rear side of the shoulder fixing sleeve via a flexible hanging belt, and the portable dialysis machine and the fistula protection ring are connected via the motion-following anti-fracture pipeline.

[0008] Furthermore, the shoulder fixing sleeve comprises a light metal shell, a flexible limiting air cushion is fixedly arranged on the inner side of the light metal shell, and anti-slip wave dots are evenly distributed on the surface of the flexible limiting air cushion.

[0009] Furthermore, the lightweight metal shell is integrally formed by 3D printing according to the patient's shoulder model.

[0010] Furthermore, the arm pipeline protection bracket includes an upper arm protection rod and a lower arm protection rod, the upper arm protection rod is rotatably connected to the lower arm protection rod through a rotating bearing, a fistula protection ring clamping sleeve is fixedly provided at the bottom of the lower arm protection rod, an electromagnetic pipeline interface is fixedly provided on the inner side of the fistula protection ring clamping sleeve, and an electromagnetic pipeline clamping joint is fixedly provided on the outer side of the fistula protection ring.

[0011] Furthermore, the electromagnetic pipeline clamp connector includes two internal fistula tube external joints fixedly clamped on the fistula protection ring, and the head of the internal leakage external joint adopts an electromagnetic clamp connector. The electromagnetic clamp connector and the electromagnetic pipeline interface are matched and can be completely clamped and sealed through electromagnetic adsorption. Electromagnetic valves are fixedly arranged on the electromagnetic clamp connector and the electromagnetic pipeline interface.

[0012] Furthermore, an inflatable fixing ring is fixedly arranged on the inner side of the fistula protection ring, and the motion-following anti-folding pipeline includes a flexible anti-folding tube whose wall interlayer is a spring steel fine wire mesh. The flexible anti-folding tube is rotatably connected at the elbow joint in the middle through a sealed bearing so that the pipeline can rotate without bending, denting or clogging.

[0013] Furthermore, the inflatable fixing ring is made of skin-like material, and a waterproof coating is sprayed on the surface of the inflatable fixing ring.

[0014] Furthermore, it is characterized in that a waterproof protective bag is fixedly arranged in the middle of the flexible hanging belt, the waterproof protective bag is closed with a Velcro fastener, and the portable dialysis machine is placed inside the waterproof protective bag.

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides a wearable hemodialysis device that has a firm sealing connection structure, a motion follow-up protection structure, and a convenient disassembly and assembly structure. The fixed part of the personalized inflatable clamping that wraps the shoulder is combined with the lanyard connection, which is conducive to hanging the entire device on the patient's shoulder for convenient wearing. The delivery pipeline is connected at the elbow joint through a sealed bearing, which is conducive to preventing the pipeline from being blocked due to excessive deflection during movement, and ensuring better motion follow-up protection. The pipeline is connected at the interface by electromagnetic clamping, which is conducive to achieving the function of firm sealing and easy disassembly, and a specially designed fistula protection ring clamping sleeve is used. It is conducive to ensuring that the fistula is well protected and sealed and waterproof to avoid infection during daily bathing and light watering. The motion follow-up function better meets the patient's daily normal actions and improves the patient's comfort level. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structural diagram of the non-pipeline assembly;

[0018] Figure 2 This is the front view of the overall structure without pipelines;

[0019] Figure 3 It is the side view of the overall structure;

[0020] Figure 4 This is a top view of the overall assembly without pipes;

[0021] Figure 5 This is the overall installation diagram of the fistula protection ring;

[0022] Figure 6 This is a top view of the fistula protection ring;

[0023] Figure 7 This is an enlarged view of the sealed bearing connection pipeline;

[0024] Figure 8 Cross-sectional view of the sealed bearing connection piping.

[0025] Description of reference numerals:

[0026] 1. Shoulder fixing sleeve; 2. Arm pipeline protection bracket; 3. Motion-following anti-bend pipeline; 4. Fistula protection ring; 5. Portable dialysis machine; 6. Upper arm protection rod; 7. Lower arm protection rod; 8. Fistula protection ring clamp sleeve; 9. Electromagnetic pipeline interface; 10. Electromagnetic pipeline clamp connector; 11. Inflatable fixing ring; 12. Sealed bearing; 13. Waterproof protective bag. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0032] like Figure 1-8 As shown, an embodiment of the present invention is: a wearable hemodialysis device for autologous arteriovenous fistula, comprising a shoulder fixing sleeve 1, an arm pipeline protection bracket 2 is fixedly arranged at the lower end of the shoulder fixing sleeve, a motion-following anti-bend concave pipeline 3 is fixedly arranged on the inner side of the arm pipeline bracket, a fistula protection ring 4 is arranged at the lower end of the arm pipeline protection bracket, a portable dialysis machine 5 is fixedly arranged at the middle of the rear side of the shoulder fixing sleeve through a flexible hanging belt, and the portable dialysis machine and the fistula protection ring are connected through the motion-following anti-bend concave pipeline. The arm pipeline protection bracket comprises an upper arm protection rod 6 and a lower arm protection rod 7, the upper arm protection rod is rotatably connected to the lower arm protection rod through a rotating bearing, and a fistula protection ring clamping sleeve 8 is fixedly arranged at the bottom of the lower arm protection rod.

[0033] An electromagnetic pipeline interface 9 is fixedly provided on the inner side of the fistula protection ring clamping sleeve, and an electromagnetic pipeline clamping joint 10 is fixedly provided on the outer side of the fistula protection ring. The electromagnetic pipeline clamping joint includes two internal fistula tube external joints fixedly clamped on the fistula protection ring, and the head of the internal leakage external joint adopts an electromagnetic clamping joint. The electromagnetic clamping joint and the electromagnetic pipeline interface are matched and can be completely clamped and sealed by electromagnetic adsorption. Electromagnetic valves are fixedly provided on the electromagnetic clamping joint and the electromagnetic pipeline interface. Therefore, the patient can realize the direct connection between the internal fistula tube external joint and the dialysis pipeline through the connection between the electromagnetic clamping joint and the electromagnetic pipeline interface, and the closed connection mode of the electromagnetic valve makes the link healthier and safer, and the two parts only need to be disinfected before each connection.

[0034] An inflatable fixing ring 11 is fixedly provided on the inner side of the fistula protection ring, and the motion-following anti-bend and concave pipeline includes a flexible anti-bend and concave tube whose tube wall interlayer is a spring steel fine wire mesh. The flexible anti-bend and concave tube is rotatably connected at the elbow joint in the middle by a sealed bearing 12 so that the tube can rotate without bending, sinking or clogging. The spring steel fine wire mesh provided in the inner wall interlayer of the tube here is beneficial to avoid serious deformation of the tube, which may cause bending, sinking or clogging. The shoulder fixing sleeve includes a lightweight metal shell, and a flexible limiting air cushion is fixedly provided on the inner side of the lightweight metal shell, and anti-slip wave dots are evenly distributed on the surface of the flexible limiting air cushion. A waterproof protective bag 13 is fixedly provided in the middle of the flexible hanging strap, and the waterproof protective bag is closed with a Velcro buckle, and a portable dialysis machine is placed inside the waterproof protective bag.

[0035] When implementing this embodiment, first align the two external connectors of the fistula on the arm with the inner side of the electromagnetic card connector when wearing it for the first time, then press the switch on the fistula protection ring that controls the opening and closing of the inner side of the electromagnetic card connector to open it, and then align the external connector of the internal fistula tube that matches its size and insert it into it, and then control the switch that controls the opening and closing of the inner side of the electromagnetic card connector to close, and the first operation of fitting the fistula protection ring to the fistula is completed. Then, you only need to connect the external inflation device to inflate the inflatable fixing ring so that it can tightly wrap the wound at the fistula to complete the fixation.

[0036] After fixing the fistula protection ring, put the shoulder fixing sleeve directly on the patient's shoulder, and the cloth bag containing the portable dialysis machine will be naturally placed behind the patient. Then align the arm pipeline protection bracket with the arm so that the fistula protection ring clamp sleeve is close to the fistula protection ring, align the end of the dialysis pipeline that has been prepared for circulation inside the pipeline after startup, that is, the electromagnetic pipeline interface, with the electromagnetic card connector, and then use the switch to control the two to form a closed connection through magnetic adsorption. Then, open the solenoid valves of the two through the switch, so that the internal liquid flow of the two begins to circulate, thereby completing the installation.

[0037] When you need to stop wearing dialysis, simply close the electromagnetic valve inside the electromagnetic pipeline interface and the electromagnetic card connector to directly cut off the two. If you need to replace or clean the pipeline after cutting, just remove the pipeline from the inside of the arm pipeline protection bracket. The pipeline is fixed to the inside of the arm pipeline protection bracket by gluing, and the middle rotating bearing part is aligned with the rotating part in the middle of the arm pipeline protection bracket to ensure the synchronization of movement, thereby avoiding interference and blocking of the pipeline when the arm is bent. Since the pipeline is fixed to the inside of the arm pipeline protection bracket by gluing, the upper end pipeline wants to be transmitted from the upper arm protection rod to connect to the portable dialysis machine without affecting normal movement.

[0038] This embodiment provides a wearable hemodialysis device that has a firm sealing connection structure, a motion follow-up protection structure, and a convenient disassembly and assembly structure. The personalized fixed part of the inflatable clip that wraps the shoulder is combined with the lanyard connection, which is conducive to hanging the entire device on the patient's shoulder for convenient wearing. The delivery pipeline is connected at the elbow joint through a sealed bearing, which is conducive to preventing the pipeline from being blocked due to excessive deflection during movement, and ensuring better motion follow-up protection. The pipeline is connected at the interface by electromagnetic clipping, which is conducive to achieving the function of firm sealing and easy disassembly, and a specially designed fistula protection ring clip sleeve is used. It is conducive to ensuring that the fistula is well protected and sealed and waterproof to avoid infection during daily bathing and light watering. The motion follow-up function better meets the patient's daily normal actions and improves the patient's comfort.

[0039] In this embodiment, the lightweight metal shell is integrally formed by 3D printing according to the patient's shoulder model, which helps to better fit the patient so that he can wear it stably and comfortably without affecting normal movement.

[0040] In this embodiment, the inflatable fixing ring is made of skin-like material, and the surface of the inflatable fixing ring is sprayed with a waterproof coating, which is beneficial to ensure that the fistula site on the arm can be fully sealed and protected to avoid being contaminated by water vapor.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A wearable hemodialysis device for autologous arteriovenous fistula, characterized in that: It comprises a shoulder fixing sleeve, an arm pipeline protection bracket is fixedly provided at the lower end of the shoulder fixing sleeve, a motion-following anti-bend pipeline is fixedly provided on the inner side of the arm pipeline protection bracket, a fistula protection ring is provided at the lower end of the arm pipeline protection bracket, a portable dialysis machine is fixedly provided at the middle part of the rear side of the shoulder fixing sleeve via a flexible hanging belt, and the portable dialysis machine and the fistula protection ring are connected via the motion-following anti-bend pipeline.

2. A wearable hemodialysis device for autologous arteriovenous fistula according to claim 1, characterized in that: The shoulder fixing sleeve comprises a light metal shell, a flexible limiting air cushion is fixedly arranged on the inner side of the light metal shell, and anti-slip wave dots are evenly distributed on the surface of the flexible limiting air cushion.

3. A wearable hemodialysis device for autologous arteriovenous fistula according to claim 2, characterized in that: The lightweight metal shell is integrally formed by 3D printing according to the patient's shoulder model.

4. A wearable hemodialysis device for autologous arteriovenous fistula according to claim 1, characterized in that: The arm pipeline protection bracket includes an upper arm protection rod and a lower arm protection rod, the upper arm protection rod is rotatably connected to the lower arm protection rod through a rotating bearing, a fistula protection ring clamping sleeve is fixedly provided at the bottom of the lower arm protection rod, an electromagnetic pipeline interface is fixedly provided on the inner side of the fistula protection ring clamping sleeve, and an electromagnetic pipeline clamping joint is fixedly provided on the outer side of the fistula protection ring.

5. The wearable hemodialysis device for autologous arteriovenous fistula according to claim 1, characterized in that: The electromagnetic pipeline clamp connector includes two internal fistula tube external joints fixedly clamped on the fistula protection ring. The head of the internal leakage external joint adopts an electromagnetic clamp connector. The electromagnetic clamp connector and the electromagnetic pipeline interface match and can be completely clamped and sealed through electromagnetic adsorption. Electromagnetic valves are fixedly arranged on the electromagnetic clamp connector and the electromagnetic pipeline interface.

6. A wearable hemodialysis device for autologous arteriovenous fistula according to claim 1, characterized in that: An inflatable fixing ring is fixedly arranged on the inner side of the fistula protection ring, and the motion-following anti-folding pipeline includes a flexible anti-folding tube with a tube wall interlayer of spring steel fine wire mesh. The flexible anti-folding tube is rotatably connected at the elbow joint in the middle through a sealed bearing so that the pipeline can rotate without bending, denting or clogging.

7. A wearable hemodialysis device for autologous arteriovenous fistula according to claim 1, characterized in that The inflatable fixing ring is made of skin-like material, and the surface of the inflatable fixing ring is sprayed with a waterproof coating.

8. A wearable hemodialysis device for autologous arteriovenous fistula according to claim 1, characterized in that A waterproof protective bag is fixedly arranged in the middle of the flexible hanging belt, the waterproof protective bag is closed with a Velcro fastener, and the portable dialysis machine is placed inside the waterproof protective bag.

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