Grip strength assembly and internal arteriovenous fistula training instrument

Abstract

The utility model relates to the technical field of medical auxiliary equipment, in particular to a grip strength assembly and an internal arteriovenous fistula training instrument, the grip strength assembly comprises a grip strength body, a mounting seat and a signal line, the grip strength body is an elastic body capable of being extruded and deformed, one end of the grip strength body is detachably connected with the mounting seat, and the other end of the grip strength body is detachably connected with the signal line. And the signal line outputs a holding signal indicating that the grip body is extruded to deform. Through the arrangement, the standardization of fistula training operation is improved, the fistula is accelerated to become thick and mature, and the training effect is remarkable; the mounting seat is arranged, so that the grip bodies are convenient to mount and dismount, meanwhile, the grip bodies with different hardness, elasticity, materials, sizes and the like can be conveniently replaced according to comfort requirements and training requirements of patients, the comfort of the patients is improved, and meanwhile, the training effect of internal arteriovenous fistula is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, in particular to a grip component and an arteriovenous fistula training instrument. Background Art

[0002] Hemodialysis is a renal replacement therapy for patients with chronic renal failure. In order to perform hemodialysis, vascular access needs to be established in advance. Among them, arteriovenous fistula (AVF) is one of the commonly used vascular accesses due to its good long-term dialysis effect, high survival rate, low infection rate and low thrombosis rate.

[0003] Arteriovenous fistula formation is usually required to establish an arteriovenous fistula. This operation aims to form an arteriovenous fistula by anastomosing the artery near the wrist of the patient's forearm with the nearby vein, so that arterial blood flows in the vein. However, the native venous vessels are usually narrow and cannot meet the blood flow requirements. In addition, the native venous vessels are susceptible to injury and infection. Once they lose their function, vascular access needs to be reestablished. This not only increases the surgical burden on patients, but also limits the available surgical sites. Therefore, it is crucial to strengthen the maintenance of the effectiveness of arteriovenous fistulas, and intensive training to make them grow thicker is a more mainstream method.

[0004] At present, arteriovenous fistula training mainly relies on the patients' independent completion, but patients may not be able to carry out effective training due to improper operation or low compliance, which may lead to the failure to obtain arteriovenous fistula suitable for dialysis puncture on time, affecting the patients' physical health. Utility Model Content

[0005] In order to solve the above defects, the utility model provides a grip assembly and an arteriovenous fistula training device.

[0006] The technical solution adopted by the utility model is a grip assembly, including a grip body, a mounting seat and a signal line. The grip body is an elastic body that can be squeezed and deformed. One end of the grip body is detachably connected to the mounting seat, and the signal line outputs a gripping signal of the grip body being squeezed and deformed.

[0007] Preferably, one end of the gripping body is connected to the mounting seat by a snap connection, a threaded connection or a spring clamping connection.

[0008] Preferably, the grip assembly further comprises a sensor assembly capable of sensing pressure, one end of the sensor assembly abuts against the grip body, and the other end of the sensor assembly is signal-connected to the signal line.

[0009] Preferably, the sensor component is a reset switch having an on state and an off state. When the gripping body is squeezed and deformed, the reset switch switches from the off state to the on state and transmits a signal to the signal line.

[0010] Preferably, the grip body and the reset switch extend into the mounting seat from both ends of the mounting seat respectively and are detachably connected to the mounting seat, and one end of the grip body extending into the mounting seat abuts against one end of the reset switch extending into the mounting seat.

[0011] Preferably, the mounting seat is a tubular structure, and both end openings of the tubular structure are provided with snap rings / snap buckles, and the grip body and the reset switch are respectively snap-connected to the mounting seat via the snap rings / snap buckles.

[0012] Preferably, the grip assembly further comprises a housing, and the mounting seat and the reset switch are both disposed within the housing.

[0013] Preferably, the gripping body is an elliptical solid sphere.

[0014] The utility model also provides an arteriovenous fistula training device, comprising a first module and the above-mentioned grip component, wherein the first module comprises an electric control component, and one end of the signal line is connected to the electric control component signal.

[0015] Preferably, it also includes a second module, which has a pressure-applying state for applying pressure to the limb to prolong the fistula filling time, and a pressure-releasing state for quickly releasing the pressure on the limb; the electronic control component controls the second module to switch between the pressure-applying state and the pressure-releasing state.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. Compared with empty fist training, the training of grip strength components can further increase the blood flow and pressure around the fistula, which helps to further promote the development and expansion of the fistula and improve the functionality and long-term stability of the fistula;

[0018] 2. By providing a mounting seat on the grip assembly, it is convenient to install and remove the grip body. At the same time, it is convenient to replace the grip body with different hardness, elasticity, material and size according to the patient's comfort needs and training needs, thereby improving the patient's comfort and improving the training effect of the arteriovenous fistula. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is described in detail below with reference to the embodiments and drawings, wherein:

[0020] Figure 1 It is a schematic diagram of the overall structure of the arteriovenous fistula training instrument;

[0021] Figure 2 is the internal structure of the first module, and a schematic diagram of the second module and the grip assembly;

[0022] Figure 3 It is a schematic diagram of the overall structure of the grip assembly;

[0023] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of the middle grip component along the AA axis.

[0024] 10. First module; 11. Display screen; 121. Upper shell; 122. Lower shell; 14. Electronic control component; 151. Three-way valve 1; 152. Three-way valve 2; 16. Air pump; 17. Pipeline group; 18. Pipeline;

[0025] 20. Second module; 21. Trachea;

[0026] 30. Grip assembly; 31. Grip body; 32. Mounting base; 33. Reset switch; 34. Housing; 35. Signal line; 36. Connector. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be interpreted as limiting the utility model.

[0028] In one embodiment, Figure 1 As shown, an arteriovenous fistula trainer includes a first module 10 and a second module 20. The second module 20 acts on the proximal end of the fistula, and has three states: a pressure-applying state, a pressure-releasing state, and a pressure-measuring state. When the second module 20 is in a pressure-applying state, it applies pressure to the limbs, prolongs the pressurization time of the fistula, and promotes the development and strengthening of the fistula. When the second module 20 is in a pressure-releasing state, it quickly releases the pressure on the limbs to relieve the discomfort of the limbs and protect the fistula and surrounding tissues. When the second module 20 is in a pressure-measuring state, it has a blood pressure measurement function and can measure the blood pressure of the limbs to monitor the patient's blood pressure condition. Among them, the proximal end of the fistula refers to the end close to the heart, and the distal end of the fistula refers to the end far from the heart.

[0029] The first module 10 includes an electric control component 14, which controls the connection to the second module 20, and controls the switching of the second module 20 between a pressure application state, a pressure release state, and a pressure measurement state. Through the control of the electric control component 14, the user can flexibly switch the working state of the second module 20 as needed to meet the different training needs and medical monitoring requirements of the patient.

[0030] When in use, the patient places the second module 20 on the proximal end of the fistula on the limb, which may be the arm, thigh, etc. The proximal end of the upper arm refers to the end of the upper arm near the shoulder on the side of the arm where the arteriovenous fistula is formed. The electronic control component 14 controls the second module 20 to enter a pressure-applying state, so that the proximal end of the upper arm is in a squeezed state. The squeezing of the proximal end of the upper arm causes the vein to expand and fill appropriately, increasing the blood flow; then the electronic control component 14 controls the second module 20 to enter a pressure-releasing state, and the second module 20 quickly releases the pressure on the limb, reduces excessive compression on the blood vessels, and prevents damage to the blood vessels. The electronic control component 14 controls the second module 20 to switch back and forth between the pressure-applying state and the pressure-releasing state, thereby promoting the fistula to become thick and mature faster, improving the standardization of the operation, and achieving significant training effects.

[0031] Furthermore, the patient can cooperate in the action of clenching and unclenching fists. When clenching fists, the fingers close to the palm can increase the tension of the blood vessel wall, promote the growth of endothelial cells and vascular remodeling, and cooperate with the second module 20 to promote the fistula to become thick and mature.

[0032] At present, when patients conduct arteriovenous fistula training independently, they need to hold one hand on the fistula arm to hold the arm and make a fist with the fistula hand, which is commonly known as arm-binding fist. However, when the multifunctional arteriovenous fistula training device of this embodiment is used, due to the coordinated work of the second module and the first module, the patient can complete the training with a single arm without manually binding the arm, which greatly improves the convenience of operation.

[0033] In addition, blood pressure measurement is beneficial for patient monitoring. Regular blood pressure monitoring can help doctors understand the patient's blood pressure status and take necessary measures in a timely manner.

[0034] The arteriovenous fistula training device in this embodiment also has the function of measuring the patient's blood pressure. When in use, the electronic control component 14 controls the second module 20 to enter the pressure measurement state, and the second module 20 monitors the patient's blood pressure to help doctors better manage the patient's health status and ensure that they can smoothly perform dialysis treatment.

[0035] In one embodiment, the first module 10 further includes an air circuit assembly, and the electric control assembly 14 controls the connection of the air circuit assembly, and the air circuit assembly is used to control the flow of gas. The second module 20 includes an air bag, which is connected to the air circuit assembly, so that the air bag can inhale and expand to increase the volume or deflate and shrink the volume, and the air bag and the air circuit assembly can be connected through the trachea 21 and the like. The electric control assembly 14 controls the on-off and flow direction of the airflow in the air circuit assembly to make the air bag press and release the limbs, and the air bag compresses and releases the limbs, so that the second module 20 is in a pressure-applying state, a pressure-releasing state, and a pressure-measuring state, respectively. Among them, when the second module 20 is in a pressure-applying state, the air bag inhales and expands to compress the limbs; when the second module 20 is in a pressure-releasing state, the air bag quickly deflates and shrinks to release the limbs; when the second module 20 is in a pressure-measuring state, the air bag first inhales and expands to compress the limbs, and then slowly deflates and shrinks to release the limbs. That is, when the second module 20 is in a pressure-releasing state and a pressure-measuring state, the speed at which the air bag releases the limbs is different, so as to achieve the purpose of preventing damage to blood vessels and measuring blood pressure, respectively.

[0036] Specifically, Figure 2 As shown, the gas circuit assembly includes an air pump 16, an air valve assembly and a pipeline assembly 17. The air pump 16, the air valve assembly and the air bag are connected in sequence through the pipeline assembly 17 to form an air circuit system. The electronic control assembly 14 controls the start and stop of the air pump 16 and the opening and closing state of the valve of the air valve assembly to adjust the flow direction and pressure of the gas, which can effectively control the compression and release of the air bag on the limbs, and realize the training of the patient's arteriovenous fistula and the monitoring of blood pressure.

[0037] Furthermore, the gas valve group includes two three-way valves, namely three-way valve 1 151 and three-way valve 2 152. Three-way valve 1 151 includes side port 1, outer port 1 and inner port 1, and three-way valve 2 152 includes side port 2, outer port 2 and inner port 2. The three vents of three-way valve 1 151 and three-way valve 2 152 are respectively provided with valves. By controlling the opening and closing of the corresponding valves, the connection and disconnection of the airflow on both sides of the vent can be changed. The outer port 1 and the outer port 2 are respectively connected to the atmosphere so that the gas path system can inhale and exhaust gas and exchange gas with the surrounding environment. The side port 1 and the side port 2 are respectively connected to the two ends of the air pump 16, and the inner port 1 and the inner port 2 are respectively connected to the airbag, thereby forming an air path system. By changing the working state of the air pump 16, air is sucked from the atmosphere through the outer port 1 or the outer port 2 and rushed into the airbag; or air is extracted from the airbag and discharged into the atmosphere through the outer port 1 or the outer port 2; or the air pump 16 does not work, and the outer port 1 or the outer port 2 is opened, so that the gas in the airbag is spontaneously released into the atmosphere.

[0038] Furthermore, a pressure sensor is provided on the electronic control component 14, and the pressure sensor is connected to the electronic control component 14 by signal. The inner port 1 of the three-way valve 1 151 and the inner port 2 of the three-way valve 2 152 are also connected to the sensing end of the pressure sensor respectively, so that the pressure sensor can monitor the air pressure in the gas circuit system in real time. In the process of the second module 20 switching from the depressurization state to the pressure application state, when the pressure sensor detects that the pressure in the gas circuit system reaches the preset pressure application pressure, the signal can be transmitted to the electronic control component 14, and the electronic control component 14 controls the valves of the outer port 1 and the outer port 2 to close, and controls the air pump 16 to stop working, so that the second module 20 is maintained in the pressure application state. In the process of the second module 20 switching to the depressurization state, when the pressure sensor detects that the pressure in the gas circuit system reaches the preset depressurization pressure, the signal can be transmitted to the electronic control component 14, and the electronic control component 14 controls the valves of the outer port 1 and the outer port 2 to close, and controls the air pump 16 to stop working. When the second module 20 is in the pressure measuring state, the pressure sensor can monitor the air pressure in the air circuit system in real time, obtain the patient's systolic and diastolic pressure data and transmit them to the electronic control component 14.

[0039] Furthermore, the first module 10 also includes a display screen 11, and the signal of the display screen 11 is connected to the electronic control component 14. The signal obtained by the electronic control component 14 can be transmitted to the display screen 11 in real time for display, so that the display screen 11 can view the current working status of the second module 20 in real time, which is convenient for patients to perform arteriovenous fistula training and also convenient for doctors to check the patient's blood pressure.

[0040] In one embodiment, the first module 10 further includes a housing, and the electric control component 14, the gas circuit component and the display screen 11 are all arranged in the housing, so that the first module 10 has better integrity, is easy to carry, and prevents dirt from contaminating the structures. The housing includes an upper housing 121 and a lower housing 122, and an opening is arranged in the middle of the upper housing 121, and the display screen 11 is arranged opposite to the opening on the housing, so that patients and doctors can read the information on the display screen 11.

[0041] In one embodiment, the second module 20 also includes a cuff, which can be used to be put on the patient's limbs. The airbag is arranged in the cuff, so that the airbag can be stably worn on the patient's limbs to assist the patient in fistula training and monitor the patient's blood pressure.

[0042] The pipeline group 17 may include a pipeline 18 and a multi-way pipe. The air pump 16, the air valve group, the airbag and the sensing end of the pressure sensor are connected through the pipeline 18 and the multi-way pipe of the pipeline group 17 to form an air circuit system. The multi-way pipe includes a single multi-way or a multi-way combination of a device that can connect multiple pipelines. Specifically, the four points of the inner port 1, the inner port 2, the airbag and the sensing end of the pressure sensor can be connected through the pipeline 18 and two three-way pipes, or through the pipeline 18 and a four-way pipe. In other embodiments, the pipeline 18 and the multi-way pipe can be specifically designed according to space, capacity, etc.

[0043] In one embodiment, the arteriovenous fistula training device further includes a grip assembly 30, which is connected to the electronic control assembly 14 of the first module 10 by signal. The second module 20 acts on the arm at the proximal end of the fistula, and the grip assembly 30 is used for hand gripping at the distal end of the fistula, and transmits a gripping signal to the electronic control assembly 14, so that the number and strength of the patient's gripping can be known, so that the patient can adjust the intensity and frequency of the fistula training. Compared with empty fist training, training with the grip assembly 30 can further increase the blood flow and pressure around the fistula, thereby helping to further promote the development and expansion of the fistula, and improve the functionality and long-term stability of the fistula.

[0044] In one embodiment, Figure 3-4 As shown, the grip assembly 30 includes a grip body 31 and a mounting seat 32. The grip body 31 is an elastic body that can be squeezed and deformed. One end of the grip body 31 is detachably connected to the mounting seat 32. When in use, the grip body 31 is mounted on the mounting seat 32. The patient increases the blood flow and pressure around the fistula by squeezing the grip body 31, thereby improving the effect of fistula training. The arteriovenous fistula training device in this embodiment is convenient for installation and removal of the grip body 31 by providing the mounting seat 32 on the grip assembly 30. It is also convenient to replace the grip body 31 with different hardness, elasticity, material and size according to the patient's comfort requirements and training requirements, thereby improving the patient's comfort and the training effect of the arteriovenous fistula.

[0045] In one embodiment, one end of the grip body 31 is connected to the mounting seat 32 by a snap connection, a threaded connection, or a spring clamp connection, etc., which can be selected according to specific usage requirements and design considerations.

[0046] In one embodiment, the grip component 30 also includes a sensor component that can sense pressure, one end of the sensor component is in contact with the grip body 31, and the other end of the sensor component is connected to the electronic control component 14 signal. The number and strength of the patient's gripping movements can be monitored through the sensor component so that the patient can adjust the intensity and frequency of the fistula training according to real-time data.

[0047] In one embodiment, the sensing component is a reset switch 33 having an on state and an off state. When the grip body 31 is squeezed and deformed, the reset switch 33 switches from the off state to the on state and transmits a signal to the electronic control component 14. The electronic control component 14 can obtain the patient's gripping times by calculating the number of times the reset switch 33 is turned on.

[0048] In one embodiment, Figure 4 As shown, the grip body 31 extends into one end of the mounting seat 32 and is detachably connected to the end of the mounting seat 32, and the reset switch 33 extends into the other end of the mounting seat 32 and is detachably connected to the end of the mounting seat 32, and the end of the grip body 31 extending into the mounting seat 32 abuts against the end of the reset switch 33 extending into the mounting seat 32. Since the grip body 31 and the reset switch 33 are both detachably connected to the mounting seat 32, when maintenance or replacement is required, the operation is simpler, more convenient, and more flexible, and there is no need to replace the entire grip assembly 30, thereby reducing the cost of maintenance and replacement. Grip bodies 31 and reset switches 33 of different types or specifications can be replaced as needed to meet different needs or application scenarios.

[0049] Specifically, the mounting seat 32 is a tubular structure, and the openings at both ends of the tubular structure are provided with snap rings / snap buckles, and the grip body 31 and the reset switch 33 are respectively snapped with the mounting seat 32 through the snap rings / snap buckles. When in use, the reset switch 33 and the grip body 31 are respectively extended into the mounting seat 32 from the openings at both ends of the mounting seat 32, and then the snap rings / snap buckles prevent the reset switch 33 and the grip body 31 from automatically detaching from the mounting seat 32. The snap ring / snap buckle is a circular ring or discontinuous protrusion extending from the opening of the mounting seat 32 toward the axis of the mounting seat 32.

[0050] In one embodiment, the grip assembly 30 also includes a housing 34, and the mounting seat 32 and the reset switch 33 are both disposed within the housing 34 to prevent external liquid and dust from damaging the electronic components (i.e., the reset switch 33), and also to reduce dust accumulation on the mounting seat 32, thereby making the structural integrity of the grip assembly 30 stronger.

[0051] In one embodiment, the grip assembly 30 further includes a signal line 35, one end of which extends into the housing 34 and is connected to the reset switch 33 by signal, and the other end of the signal line 35 is connected to the electric control assembly 14 by signal, so that the on-segment information of the reset switch 33 can be transmitted to the electric control assembly 14 by signal, so as to know the number of times the patient grips and pinches, and to facilitate adjustment of the training plan. Specifically, a connector 36 is provided at the end of the signal line 35 away from the grip body 31, and the connector 36 can be plugged and matched with a matching interface on the electric control assembly 14 to achieve signal connection.

[0052] In one embodiment, the grip body 31 is an elliptical solid sphere. The elliptical shape conforms to ergonomics and can better adapt to the shape of human hands, making the grip more natural and comfortable, reducing hand fatigue and discomfort. The deformation of the solid sphere structure is more obvious, and it is easier to trigger the reset switch 33, so that the counting of the number of grips is more accurate. The material of the grip body 31 can be rubber, silicone, etc.

[0053] In one embodiment, the first module 10 may also include a sound component, such as a speaker. When using the arteriovenous fistula training device, the electronic control component 14 can control the sound component to issue a sound prompt, or control the display screen 11 to display a text prompt. According to the sound prompt or text prompt, the patient wears the cuff, holds the grip body 31, the training starts, the airbag is inflated, and the patient squeezes the grip body 31 according to the prompt. The reset switch 33 transmits the electrical signal of squeezing the grip body 31 to the electronic control component 14. After the electronic control component 14 receives the signal, it prompts to squeeze the grip body 31 again, and the air pump 16 pumps the airbag at the same time. Squeezing the grip body 31 once corresponds to the inflation and deflating of the airbag, and squeezing the grip body 31 multiple times corresponds to the inflation and deflating of the airbag; this is repeated until the training is completed. Specifically, the electronic control component 14 can be a combination of a single-chip circuit or multiple-chip circuits.

[0054] In the description of this specification, if the terms "embodiment 1", "this embodiment", "in an embodiment" and the like appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the invention or utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example; moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in an appropriate manner.

[0055] In the description of this specification, the terms "connect", "install", "fix", "set", "have", etc. are all understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] In the description of this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0057] The above description of the embodiments is to facilitate ordinary technicians in the technical field to understand and apply the technology of this case. People familiar with the technology in this field can obviously make various modifications to these examples easily and apply the general principles described here to other embodiments without creative work. Therefore, this case is not limited to the above embodiments. Modifications to the following situations should all be within the scope of protection of this case: ① A new technical solution based on the technical solution of the utility model and combined with existing common knowledge, the technical effect produced by the new technical solution does not exceed the technical effect of the utility model; ② The equivalent replacement of some features of the technical solution of the utility model by using known technology, the technical effect produced is the same as the technical effect of the utility model; ③ The technical solution of the utility model can be expanded based on the technical solution of the utility model, and the substantive content of the expanded technical solution does not exceed the technical solution of the utility model; ④ The equivalent transformation made by using the contents of the specification and drawings of the utility model is directly or indirectly applied to other related technical fields.

Claims

1. A grip assembly, characterized in that: The invention comprises a grip body, a mounting seat, a signal line, and a pressure-sensing sensor component, wherein the grip body is an elastic body that can be squeezed and deformed, one end of the grip body is detachably connected to the mounting seat, one end of the sensor component abuts against the grip body, and the other end of the sensor component is connected to the signal line, and the signal line outputs a gripping signal indicating that the grip body is squeezed and deformed; the sensor component is a reset switch having an on state and an off state, and when the grip body is squeezed and deformed, the reset switch switches from the off state to the on state and transmits a signal to the signal line.

2. The grip assembly according to claim 1, characterized in that: The connection mode between one end of the gripping body and the mounting seat is one of a clamping connection, a threaded connection or a spring clamping connection.

3. The grip assembly according to claim 1, characterized in that: The grip body and the reset switch extend into the mounting seat from both ends of the mounting seat respectively and are both detachably connected to the mounting seat. One end of the grip body extending into the mounting seat abuts against one end of the reset switch extending into the mounting seat.

4. The grip assembly according to claim 3, characterized in that: The mounting seat is a tubular structure, and both end openings of the tubular structure are provided with snap rings / buckles, and the grip body and the reset switch are respectively snap-connected with the mounting seat through the snap rings / buckles.

5. The grip assembly according to claim 4, characterized in that: The grip assembly also includes a shell, and the mounting seat and the reset switch are both arranged in the shell.

6. The grip assembly according to claim 1, characterized in that: The gripping body is an elliptical solid sphere.

7. An arteriovenous fistula training device, characterized in that: It comprises a first module and a grip assembly as described in any one of claims 1 to 6, wherein the first module comprises an electric control assembly, and one end of the signal line is connected to the electric control assembly signal.

8. The arteriovenous fistula training device according to claim 7, characterized in that: It also includes a second module, which has a pressure-applying state for applying pressure to the limb to prolong the fistula filling time, and a pressure-releasing state for quickly releasing the pressure on the limb; the electronic control component controls the second module to switch between the pressure-applying state and the pressure-releasing state.

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