Multifunctional internal arteriovenous fistula trainer

Abstract

The utility model discloses a multifunctional internal arteriovenous fistula training device which comprises a rack and further comprises an arm restraining assembly, an arm fixing assembly and a training device. The arm binding assembly comprises a shaft, a winding drum and a drawstring A, the shaft is rotationally connected into the rack, the winding drum is fixedly connected to the shaft, one end of the drawstring A is fixedly connected to the winding drum, the other end of the drawstring A penetrates out of a groove of a base plate, and the base plate is fixedly connected with the rack; the internal fistula training device can effectively improve the internal fistula training effect of a patient.

Description

Technical Field

[0001] This utility model belongs to the field of medical auxiliary device technology, and in particular relates to a multifunctional arteriovenous fistula trainer. Background Technology

[0002] Arteriovenous fistula (AVF) connects a vein and an artery, allowing arterial blood to flow into the vein. Venous blood develops and becomes arterialized in the presence of an artery. The purpose of creating an AVF is to allow puncture of the developed vein for dialysis patients. Because natural vein walls are relatively thin, the flow rate is insufficient for dialysis. After establishing an AVF, arterial blood flows into the vein, the vein wall thickens, and the flow rate increases. With sufficient blood flow, the blood is drained into the dialysis machine, and after dialysis, the blood is returned to the patient. After AVF surgery, patients need to actively perform hand exercises, commonly using a ball-pinching exercise. These exercises also require the patient to use their other hand to press on their upper arm for arm restraint. However, patients often lack the strength to effectively restrain their arm. Therefore, a device is proposed to assist patients in arm restraint during these exercises. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a multifunctional arteriovenous fistula trainer, which solves the aforementioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional arteriovenous fistula trainer, comprising a frame and further comprising: a brace assembly for bracing the arm; the brace assembly comprises a shaft, a drum, and a pull strap A, wherein the shaft is rotatably connected to the frame, the drum is fixedly connected to the shaft, one end of the pull strap A is fixedly connected to the drum, and the other end of the pull strap A extends out from a groove in a pad, and the pad is fixedly connected to the frame.

[0005] Beneficial effects

[0006] This invention provides a multifunctional arteriovenous fistula trainer, which has the following advantages compared with the prior art:

[0007] The user places their palm upward on the curved plate, with their elbow resting on the pad. The medical staff then wraps strap B around the patient's arm once and connects it to strap A. The patient then places their upper arm on the pad. The medical staff places a rubber ball in the patient's palm, and the patient presses the ball while simultaneously starting the motor. This causes the motor to drive the lead screw, which is fixedly connected to its output shaft, to rotate synchronously. The slide cylinder, threaded onto the lead screw, begins to slide along its connection to the frame. This slide cylinder pushes the connecting rod, which in turn lifts the push rod, causing it to rotate upward at its hinge point with the frame. This, in turn, causes the curved plate, which is hinged to the push rod, to move synchronously. The movement of the ball lifts the patient's forearm, allowing them to perform arm flexion exercises while pressing the rubber ball. Simultaneously, as the lead screw rotates, the pulley A fixedly connected to it rotates synchronously. This causes pulley B, in conjunction with the belt connected to it, to begin rotating synchronously with pulley A. Consequently, the shaft fixedly connected to the center of pulley B begins to rotate, which in turn drives the drum fixedly connected to it to rotate synchronously. The drum then winds the pull strap A fixedly connected to it onto the drum, and through pull strap A, it simultaneously winds pull strap B onto the drum, causing pull strap B to tighten and begin compressing the patient's upper arm, thus achieving the effect of arm binding and improving the training effect of arteriovenous fistula. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0009] Figure 2 This is a cross-sectional schematic diagram of the overall structure of this utility model.

[0010] Figure 3 This is a cross-sectional schematic diagram of the overall structure of this utility model.

[0011] Figure reference numerals: Frame 101, Arm assembly 2, Shaft 201, Drum 202, Belt A 203, Belt B 204, Pad 205, Pad block 206, Top rod 207, Arc plate 208, Cotton rope 209, Rubber ball 301, Connecting rod 302, Slide cylinder 303, Lead screw 304, Pulley A 305, Belt 306, Pulley B 307, Motor 308. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0013] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0014] Please see Figures 1-3According to one embodiment of the present invention, a multifunctional arteriovenous fistula trainer includes a frame 101 and further includes:

[0015] Constriction arm assembly 2, used for constriction arm assembly;

[0016] The arm assembly 2 includes a shaft 201, a drum 202, and a pull strap A203. The shaft 201 is rotatably connected to the frame 101, the drum 202 is fixedly connected to the shaft 201, one end of the pull strap A203 is fixedly connected to the drum 202, and the other end of the pull strap A203 passes through the groove of the pad 205. The pad 205 is fixedly connected to the frame 101.

[0017] Regarding the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific frame 101 described in the above embodiments. For example, the purpose of the bottom telescopic rod of the frame 101 is to facilitate the adjustment of the height of the device to match the user's height.

[0018] Regarding the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific pad 205 described in the above embodiments. For example, the pad 205 has an inner side with a rubber pad. The purpose of this setting is to provide cushioning for the user's upper arm to come into contact with the pad 205.

[0019] Specifically, a pull strap B204 is fixedly connected to the other side of the pad 205, and the male and female sides of Velcro are fixedly connected to the pull strap B204 and the pull strap A203, respectively.

[0020] For the above examples, those skilled in the art should know that when implementing the above technical solutions, the specific pull belts A203 and B204 described in the above embodiments are not limited. For example, the pull belts A203 and B204 can be elastic pull belts. The purpose of this arrangement is to facilitate the winding of the drum 202 by using an elastic pull belt and to release the pull belt so that the pull belt can automatically reset.

[0021] Specifically, a pad 206 is fixedly connected to the frame 101, a top rod 207 is hinged to the frame 101, and an arc plate 208 is hinged to the other end of the top rod 207.

[0022] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific pad 206 described in the above embodiments. For example, the pad 206 may be provided with a cotton restraint strap. The purpose of this setting is to facilitate the temporary fixation of the patient's elbow through this setting; a damping rubber ring is provided at the hinge of the top rod 207 and the arc plate 208.

[0023] Specifically, cotton ropes 209 are symmetrically fixedly connected to both sides of the arc plate 208, and the other ends of the two cotton ropes 209 are fixedly connected to the rubber ball 301.

[0024] Regarding the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific arc plate 208 described in the above embodiments. For example, the arc plate 208 is provided with a rubber pad. The purpose of this setting is to prevent the arc plate 208 from causing abrasions to the patient's arm when it pushes the patient's arm.

[0025] Specifically, a connecting rod 302 is hinged to the top rod 207, and the other end of the connecting rod 302 is hinged to the slide cylinder 303, which is slidably connected to the frame 101.

[0026] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific connecting rod 302 described in the above embodiments. For example, the connecting rod 302 should be integrally machined. The purpose of this arrangement is to facilitate the prevention of the connecting rod 302 from breaking under force.

[0027] Specifically, the slide cylinder 303 is threadedly connected to the lead screw 304. One end of the lead screw 304 is rotatably connected to the frame 101, and the other end of the lead screw 304 is fixedly connected to the output shaft of the motor 308. The motor 308 is fixedly connected to the frame 101.

[0028] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific motor 308 described in the above embodiments. For example, the motor 308 should have a timed forward and reverse rotation function, and its interval time is adjustable.

[0029] Specifically, a pulley A305 is fixedly connected to the lead screw 304, a belt 306 is drivenly connected to the pulley A305, the other end of the belt 306 is drivenly connected to the pulley B307, and the pulley B307 is fixedly connected to the shaft 201.

[0030] Regarding the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific pulleys A305 and B307 described in the above embodiments. For example, pulleys A305 and B307 should have deeper grooves. The purpose of this setting is to facilitate the increase of the limiting effect on belt 306 through this setting, thereby preventing belt 306 from dislodging during transmission.

[0031] In this embodiment of the invention, the user places their palm upward on the arc plate 208 and their elbow on the pad 206. Then, medical personnel wrap the pull strap B204 around the patient's arm once and connect it to the pull strap A203. The patient then places their upper arm on the pad 205. At this time, the medical personnel place the rubber ball 301 in the patient's palm. The patient begins to press the rubber ball 301 and simultaneously starts the motor 308. This causes the motor 308 to drive the lead screw 304, which is fixedly connected to its output shaft, to rotate synchronously. This causes the slide cylinder 303, threaded onto the lead screw 304, to slide along its connection point with the frame 101. The slide cylinder 303 pushes the connecting rod 302, which is hinged to it. The connecting rod 302 then lifts the top rod 207, causing the top rod 207 to rotate upward at its hinge point with the frame 101. This causes the top rod 207 to drive the... The articulated arc plate 208 moves synchronously, lifting the patient's forearm and allowing the patient to perform arm flexion exercises while pressing the rubber ball 301. Simultaneously, when the lead screw 304 rotates, the pulley A305 fixedly connected to it rotates synchronously, causing the pulley B307 to rotate synchronously with the pulley A305 in cooperation with the belt 306 connected to it. This causes the shaft 201 fixedly connected to the axis of pulley B307 to rotate, which in turn drives the drum 202 fixedly connected to it to rotate synchronously. The drum 202 winds the pull strap A203 fixedly connected to it, and through the pull strap A203, it winds the pull strap B204 synchronously, causing the pull strap B204 to tighten and compress the patient's upper arm, thus achieving the effect of arm binding and improving the training effect of arteriovenous fistula.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] The term "fixed connection" as used in this application refers to a connection in which parts or components are fixed without any relative movement. This includes both detachable and non-detachable connections.

[0034] (1) Detachable connection: The components are fixed together using screws, splines, wedges, etc. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of the bolts, keys, wedges) and properly tightened.

[0035] (2) Non-removable connections: These mainly refer to welding, riveting, and tenon joints. Since disassembly requires forging, sawing, or oxyacetylene cutting for repair or replacement, the parts generally cannot be reused. At the same time, attention should be paid to process quality, technical inspection, and remedial measures (such as correction and polishing) during connection.

[0036] The sliding connection referred to in this application means that the component can slide along a linear trajectory, and the hinge referred to in this application means that the component can rotate along an axial constraint.

[0037] In some cases, the sliding connection and hinge referred to in this application may also be damped, enabling the component to maintain in the desired position.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional arteriovenous fistula trainer, comprising a frame (101), characterized in that, Also includes: Constriction arm assembly (2), used for constriction arm assembly; The arm assembly (2) includes a shaft (201), a drum (202), and a pull belt A (203). The shaft (201) is rotatably connected to the frame (101), the drum (202) is fixedly connected to the shaft (201), one end of the pull belt A (203) is fixedly connected to the drum (202), and the other end of the pull belt A (203) passes through a groove in a pad (205). The pad (205) is fixedly connected to the frame (101).

2. The multifunctional arteriovenous fistula trainer according to claim 1, characterized in that, A pull strap B (204) is fixedly connected to the other side of the pad (205), and the male and female sides of Velcro are fixedly connected to the pull strap B (204) and the pull strap A (203), respectively.

3. The multifunctional arteriovenous fistula trainer according to claim 1, characterized in that, A pad (206) is fixedly connected to the frame (101), and a top rod (207) is hinged to the frame (101). An arc plate (208) is hinged to the other end of the top rod (207).

4. The multifunctional arteriovenous fistula trainer according to claim 3, characterized in that, The two sides of the arc plate (208) are symmetrically fixedly connected with cotton ropes (209), and the other ends of the two cotton ropes (209) are fixedly connected to the rubber ball (301).

5. The multifunctional arteriovenous fistula trainer according to claim 3, characterized in that, A connecting rod (302) is hinged to the top rod (207), and the other end of the connecting rod (302) is hinged to the slide cylinder (303), which is slidably connected to the frame (101).

6. The multifunctional arteriovenous fistula trainer according to claim 5, characterized in that, The slide cylinder (303) is threaded onto the lead screw (304). One end of the lead screw (304) is rotatably connected to the frame (101), and the other end of the lead screw (304) is fixedly connected to the output shaft of the motor (308). The motor (308) is fixedly connected to the frame (101).

7. The multifunctional arteriovenous fistula trainer according to claim 6, characterized in that, A pulley A (305) is fixedly connected to the lead screw (304), and a belt (306) is drivenly connected to the pulley A (305). The other end of the belt (306) is drivenly connected to the pulley B (307), and the pulley B (307) is fixedly connected to the shaft (201).

8. The multifunctional arteriovenous fistula trainer according to claim 3, characterized in that, The arc plate (208) is provided with a rubber pad.

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