Hand holding training device for functional exercise after internal arteriovenous fistula operation

Abstract

The utility model relates to the technical field of pressure belt devices, in particular to an internal arteriovenous fistula postoperative functional exercise hand holding training device which comprises a holding portion, a holding portion body and a first spring, an air cavity is formed in the holding portion body, and a vibration motor is further arranged in the holding portion body. The connecting pipe comprises a pipeline, a piston and a button are arranged in the pipeline, and a first pressure sensor is arranged on the surface of the button; the device further comprises a central control part, the central control part comprises a power module, a single-chip microcomputer module and a display screen, the device further comprises an arm pressure belt, the arm pressure belt comprises an air bag and a micro inflation pump, and the micro inflation pump is communicated with the air bag. According to the utility model, counting is carried out by pressing the button through the piston, and grip strength is compared through the pressure sensor on the button, so that the force balance during continuous training is ensured, the training effect is ensured, the training condition is recorded, the effect of functional training is improved, and medical personnel can better control the functional training condition of a patient.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure belt device technical field, concretely relates to a kind of hand holding training device for functional exercise after arteriovenous fistula operation. BACKGROUND

[0002] As the "lifeline" of dialysis patients, vascular access is the prerequisite for ensuring the effective development of dialysis, and autologous arteriovenous fistula is the preferred vascular access for hemodialysis patients. The newly established arteriovenous fistula needs to be prepared in advance before hemodialysis surgery. Usually, medical staff will suture the artery near the wrist of the patient's forearm and the adjacent vein together, leaving the anastomosed vein with arterial blood, forming an arteriovenous fistula. The blood vessels of the arteriovenous fistula can provide sufficient blood for hemodialysis treatment, providing protection for the adequacy of dialysis treatment. Arteriovenous fistula surgery connects adjacent arterial and venous blood vessels through surgical anastomosis to establish a blood flow channel. Through this channel, arterial blood flows into the vein. Due to the increase in blood flow, the pressure in the vein increases, and the vein expands, forming an arterialized blood vessel.

[0003] After the success of arteriovenous fistula surgery, the formed arteriovenous fistula cannot be used immediately. At this time, the internal fistula vein is not mature enough, that is, the vein has not completed arteriolization. The commonly used functional exercise method at home and abroad is to squeeze the pressure bag and exercise, which can effectively improve the internal diameter and blood flow of the fistula blood vessel, is beneficial to the establishment and maturation of the arteriovenous fistula access, promotes the early maturation of the arteriovenous fistula, and prolongs its use time. For elderly patients with poor blood vessels and other conditions such as diabetes, functional exercise after arteriovenous fistula surgery is particularly important.

[0004] The functional training of arteriovenous fistula surgery generally includes three stages: the first stage is 24 hours after surgery, the patient can perform fingertip movement, and the internal fistula side hand is used to play the piano; the second stage is after three days of surgery, the patient needs to perform wrist movement, the internal fistula forearm hand needs to be suspended, the five fingers are held loosely, and then the wrist is rotated. The third stage is to perform ball squeezing and arm training after seven days of surgery, the internal fistula side hand is used to squeeze the elastic ball, and the pressure belt is used to periodically compress and release the internal fistula side proximal end. Squeezing the elastic ball can make the venous blood vessels on the arm expand during muscle contraction and relaxation, which can accelerate the arteriolization of the vein. The pressure belt compresses the proximal end, which can make the returning arterial blood in the venous blood vessel gather in the venous circuit for a short period of time, and the corresponding compression and expansion of the venous blood vessel arm can accelerate the arteriolization of the vein, so that the arteriovenous fistula matures.

[0005] During the use of the pressure belt device, the pressure belt device also has the following technical problems during use: 1. For the ball holding part on the pressure belt device, during grip strength training, the size of the force used is usually based on subjective feeling, and it is difficult to accurately compare the size of the force before and after. The grip strength before and after needs to maintain a relatively balanced degree for the best, if the grip strength before is larger and the grip strength after is smaller, the exercise effect on the blood vessel expansion is not very obvious, therefore, during grip strength training, it is necessary to ensure that the continuous grip strength size is in a relatively stable change range for the maturation of the arteriovenous fistula blood vessel access. Some existing grip strength trainers use a pressure sensor loaded in the grip ball to display the size of the grip strength, but when the grip strength trainer is used, the four fingers of the hand and the palm are used at the same time, which will cause the deformation direction of the grip ball to be variable, therefore, the strain direction of the sensitive element of the built-in pressure sensor is uncontrollable, which will cause the measured pressure value to be inconsistent in size, and the sensitive element is very easy to be damaged when the grip ball deforms, which has great limitations and short service life.

[0006] 2. During grip strength training, through long-term observation and experimental records of medical personnel, it is found that the patient can achieve better training effect by keeping the grip strength trainer deformed for 4-5s and then releasing it, the current grip strength trainer products on the market are difficult to time and prompt the patient to keep deformed for 4-5s, the patient can only count the time by himself or use a timer to count the time, which is inconvenient and has large error;

[0007] 3. Some patients have low compliance, and the training time and frequency of the patients are greatly different from the expected training time and frequency of the medical personnel, the medical personnel cannot accurately obtain the real training time and frequency of the patients by inquiring the training time and frequency of the patients, which easily leads to that the arteriovenous fistula blood vessel access cannot meet the use standard and causes the operation to fail.

[0008] 4. During the function training after the arteriovenous fistula operation, the training effect of the single grip strength training is not as good as that of the periodic compression of the proximal end of the surgical arm when the grip strength training is used at the same time, and when the patient makes the grip ball reach the maximum deformation amount, the arm is compressed at the same time, so that the arteriovenous fistula blood vessel is expanded and compressed at the same time, so as to achieve better training effect. The existing grip ball training and pressure belt compression are mostly separated, and it is difficult to ensure that the compression of the arm and the finger gripping action are synchronized to achieve better training effect.

[0009] In view of the above technical problems, there is an urgent need for a hand grip training device suitable for arteriovenous fistula postoperative function exercise, which can solve at least one of the above four problems. Practical new type content

[0010] The utility model discloses a kind of post-internal arteriovenous fistula functional exercise hand holding training devices, to solve the problems that the prior art cannot accurately compare the grip strength between two grip strength training, and accurately calculate and remind the holding time during grip strength training, and the incomplete problems such as the number of single day training and total training number after operation.

[0011] To achieve the above utility model purposes, the utility model provides the following technical scheme: a kind of post-internal arteriovenous fistula functional exercise hand holding device, including holding part, the holding part includes body and first spring, the body is equipped with air cavity, the body is also equipped with vibration motor, the first spring is arranged in the air cavity, the deformation direction of the first spring is consistent with the stress direction of the holding part;

[0012] Further including connecting pipe, connecting pipe includes pipeline, the pipeline is communicated with the air cavity, piston and button are equipped in the pipeline, by extruding the air cavity, gas in air cavity can flow to pipeline, and make the flowing gas push piston move, make the piston move along pipeline and can contact button, the surface of the button is provided with first pressure sensor, and first pressure sensor is used to perceive the force that piston applies on first pressure sensor;

[0013] Further including central control part, central control part is connected with the connecting pipe, and the central control part includes power module, single-chip microcomputer module and display screen;

[0014] Further including arm pressure belt, the arm pressure belt includes air bag and micro air pump, the micro air pump is communicated with the air bag, and the micro air pump is electrically connected with the central control part by data line.

[0015] Further, the pipeline is also provided with baffle, connecting piece, base and second spring, the second spring has elasticity, the connecting piece connects baffle and piston, the baffle is attached to the inner wall of pipeline, the base is fixed in the pipeline, the second spring connects base and baffle, switch is provided on the side wall of the pipeline, the switch forms opening when being opened, the switch can adjust the size of opening, and the opening is communicated with the pipeline;

[0016] When the second spring is in initial state, the switch is in the area between piston and baffle, and the switch is not blocked by piston or baffle;

[0017] When the switch is in open state, by adjusting the size of opening, part of gas in air cavity can flow to opening when extruding air cavity, part of gas pushes piston to move, after piston is pushed by gas, baffle moves with piston, and baffle can block opening.

[0018] Further, the arm pressure belt further comprises a vibration motor, the vibration motor on the arm pressure belt generates vibration to massage the patient's arm.

[0019] Further, the central control part further comprises a Bluetooth module.

[0020] Further, the air bag outer surface and the arm contact surface are further provided with a second pressure sensor.

[0021] Further, the body further comprises an anti-skid part, the anti-skid part is provided with five grooves, and the grooves are inversely molded according to the fingers of a human hand.

[0022] Further, the anti-skid part is detachable from the body, the body is provided with an annular recess, and the anti-skid part is matched with the annular recess.

[0023] Further, the pipeline is provided with a transparent window, and the transparent window is arranged on the sliding pipeline segment of the piston.

[0024] Further, the number of vibration motors on the body is preferably five, and the vibration motors are arranged at positions corresponding to the annular recesses and the grooves.

[0025] Compared with the prior art, the device has the advantages that:

[0026] 1. The device can compare the forces of two consecutive grips, so that the patient can clearly know the force difference between the two consecutive grips, and the probability of poor training effect caused by the large force difference between the second grip and the first grip is reduced.

[0027] 2. The device can time the holding time of each grip training of the patient, and the vibration motor arranged on the part gripped by the patient will vibrate to remind the patient to achieve the optimal training holding time after the pressure value on the first pressure sensor reaches the preset value and the corresponding holding time is reached, so that the single grip training effect is better, and the vibration reminding method is more suitable for hospitals and other quiet environments, especially for patients who need long-term dialysis, a relatively quiet environment can ensure a better mood, which is beneficial to their treatment.

[0028] 3. The device is provided with a piston that moves to touch the button in the pipeline, the central control unit counts each time the button is touched, and compares the pressure on the button each time the button is touched, and when the pressure is less than the preset threshold, the device will count it separately, and the total effective training times are equal to the total count minus the separate count.

[0029] 4. By controlling the switch and adjusting the size of the opening, the training device of the application can meet various training modes, further improving the flexibility of the patient in grip training;

[0030] 5. The device of the application also integrates the compression movement of the arm pressure belt on the blood vessels on the arm and the grip movement. When the grip movement is performed, the central control part controls the inflation pump to inflate the air bag of the pressure belt to compress the blood vessels on the arm to achieve the optimal training effect. A second pressure sensor and a vibration motor are arranged on the pressure belt. When the pressure of the second pressure sensor reaches the preset threshold, the time is counted. When the time reaches the preset value, the motor vibrates to remind the patient that the optimal holding time has been reached. The patient is reminded by the double vibration of the grip part and the pressure belt;

[0031] 6. The device of the application also has a Bluetooth module. Medical staff can connect the device through Bluetooth, download the training records of the patient after surgery recorded in the device, and monitor whether the patient's training in a period of time meets the standard and whether there is a behavior of not following the doctor's advice, so as to facilitate the medical staff to better control and timely intervene the patient's training, and reduce the situation that the blood vessel access of the internal arteriovenous fistula cannot be used due to insufficient training caused by low patient compliance;

[0032] 7. The transparent window arranged on the pipeline of the device can allow the patient to clearly observe the speed of the piston movement during each grip training. By observing the speed of the piston movement, the speed of each grip action can be fine-tuned, which can help the patient to find the rhythm of the grip training. If the speed of the grip action is fast or slow between two grips, the patient's hand is more likely to be tired, which is not conducive to grip training. Therefore, balanced grip speed can prolong the time when the patient feels tired during grip training, and achieve better training effect. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 Structure diagram of one of the embodiments of the hand grip training device for postoperative function exercise of internal arteriovenous fistula of the application;

[0034] Figure 2 Structure diagram of the piston, baffle and switch in one of the embodiments of the hand grip training device for postoperative function exercise of internal arteriovenous fistula of the application;

[0035] Figure 3 Structure diagram of the hand grip training device for postoperative function exercise of internal arteriovenous fistula of the application when the grip part is provided with a groove;

[0036] Figure 4 Structure diagram of the hand grip training device for postoperative function exercise of internal arteriovenous fistula of the application when the grip part is provided with a groove;

[0037] Indicated in the figure: 1 - holding part, 11 - body, 12 - first spring, 13 - air cavity, 14 - vibration motor, 15 - groove, 16 - annular recess, 2 - connecting pipe, 21 - pipeline, 211 - baffle, 212 - connecting piece, 213 - base, 214 - second spring, 215 - switch, 216 - opening, 22 - piston, 23 - button, 24 - first pressure sensor, 3 - central control part, 31 - display screen, 32 - power module, 4 - arm pressure belt, 41 - air bag, 42 - second pressure sensor. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0039] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but only represents some embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0040] It should be noted that the embodiments in the present application and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0041] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0042] In the description of the present application, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly used when the product of the present application is used, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0043] Embodiment one:

[0044] Reference Figures 1-4As shown, a kind of arteriovenous fistula postoperative function exercise hand holding device, including holding part 1, holding part 1 includes body 11 and first spring 12, the body 11 is equipped with air cavity 13, the body 11 is also equipped with vibration motor 14, the first spring 12 is arranged in the air cavity 13, the deformation direction of the first spring 12 is consistent with the stress direction of the holding part 1;

[0045] It further includes connecting pipe 2, connecting pipe 2 includes pipeline 21, the pipeline 21 is communicated with the air cavity 13, the pipeline 21 is equipped with piston 22 and button 23, by extruding the air cavity 13, the gas in air cavity 13 can flow to pipeline 21, and the gas flowing is pushed piston 22 to move, so that the piston 22 moves along pipeline 21 and can contact button 23, the surface of the button 23 is provided with first pressure sensor 24, and first pressure sensor 24 is used to perceive the force degree that piston 22 applies on first pressure sensor 24;

[0046] It further includes central control part 3, central control part 3 is connected with the connecting pipe 2, and the central control part includes power module 32, single-chip microcomputer module and display screen 31;

[0047] It further includes arm pressure belt 4, and the arm pressure belt 4 includes air bag 41 and micro inflatable pump, the micro inflatable pump is communicated with the air bag 41, and the micro inflatable pump is electrically connected with the central control part 3 by data line.

[0048] The first spring 12 is arranged in the air cavity 13 of the body 11, and the first spring 12 is a main elastic component of the device and bears the main function of training the patient's grip strength. When the first spring 12 is arranged, the deformation direction of the first spring 12 is consistent with the direction in which the device is pressed by the patient, so that the elastic force of the first spring 12 can be optimally utilized. The connecting pipe 2 is a hollow pipe 21, and the pipe 21 is provided with a piston 22 which can move along the pipe 21. One end of the pipe 21 is in communication with the air cavity 13 on the holding part body 11, and the other end is connected with the central control part 3. The pipe 21 at the connecting end with the central control part 3 is provided with a button 23. When the piston 22 moves, the button 23 is in contact with and pressed by the piston 22. The first pressure sensor 24 is arranged on the button 23, and the sensor measures the pressure value when pressed by the piston 22. The central control part 3 includes a power module 32, a single-chip microcomputer module and a display screen 31. The power module 32 supplies power to the entire device. The single-chip microcomputer module is used for the control of related electronic equipment and the writing and execution of programs. The display screen 31 mainly displays the pressure value on the first pressure sensor 24 and the number of times of reaching the standard for grip strength training. When the patient performs grip strength training, the patient's hand presses the grip strength device, so that the size of the air cavity 13 of the grip strength device changes. The piston 22 in the pipe 21 of the connecting pipe 2 will move under the action of the gas. The piston 22 is in contact with and continuously presses the button 23. After the button 23 is pressed, an electric signal is sent to the single-chip microcomputer module. At the same time, the first pressure sensor 24 measures the pressure value. When the patient presses the body 11, the pressure value will continuously increase before the maximum deformation is reached. When the pressure value measured by the sensor reaches the preset threshold value, the single-chip microcomputer module will start timing. The preset value of the timing is preferably 4-5s. After 4-5s, the single-chip microcomputer sends an electric signal. The vibration motor 14 on the body 11 will vibrate to remind the patient that an effective grip strength training has been completed. The patient can then relax the fingers and then perform the next grip strength training. When the next training is performed, the patient can determine the pressure of the second time of holding the grip strength device and the size of the pressure value of the first time of holding the grip strength device by observing the pressure value displayed on the second display screen 31. It should be noted that the pressure value measured by the first sensor is only used to compare the difference in the force used in the continuous two times of grip strength training, but not to accurately quantify the force. The pressure value measured by the piston 22 on the button 23 is not equal to the force used by the hand each time. The patient adjusts the size of the force to be used next time by comparing the size of the value, so as to achieve a better training effect. The process is repeated until the single training plan is completed.

[0049] The arm pressure belt 4 is used with the above-mentioned components to achieve better effect; the pressure belt is similar to the pressure vein belt used in ordinary intravenous injection, which is composed of a piece of cloth with a magic tape at one end, and can tightly compress the patient's arm for a short time; the difference is that the pressure belt of the present application is lightly tied at the proximal end of the patient's arm at the beginning, unlike the pressure vein belt which tightly compresses the patient's arm; at the same time, the arm pressure belt 4 is provided with an air bag 41 and a micro inflator pump, the air bag 41 is in communication with the micro inflator pump, the inflator pump is electrically connected with the central control part 3 through a data line, the central control part 3 controls the start and stop of the inflator pump and supplies power to it; when in use, the patient performs grip training, when the patient holds the grip, the piston 22 touches the button 23, and when the pressure value on the first sensor reaches the preset pressure value, the micro inflator pump operates to inflate the air bag 41, and the arm pressure belt 4 will squeeze the patient's arm, the squeezing time will be consistent with the holding time of the patient's grip training; the squeezing of the arm pressure belt 4 on the arm will make the blood pressure value in the vascular access of the arteriovenous fistula rise, which plays a role in improving blood flow and squeezing and expanding blood vessels; at the same time, the grip action makes the muscles of the arm contract, which will increase the blood flow rate in the blood vessels, further increase the blood pressure in the blood vessels, play a role in increasing blood flow and expanding venous blood vessels, and the combination of the arm pressure belt 4 and the grip action makes the training effect stronger than the grip training alone.

[0050] Further, the pipeline 21 is also provided with a baffle 211, a connecting piece 212, a base 213 and a second spring 214, the second spring 214 has elasticity, the connecting piece 212 connects the baffle 211 and the piston 22, the baffle 211 is attached to the inner wall of the pipeline 21, the base 213 is fixed in the pipeline 21, the second spring 214 connects the base 213 and the baffle 211, and the side wall of the pipeline 21 is provided with a switch 215, the switch 215 forms an opening 216 when it is opened, the switch 215 can adjust the size of the opening 216, and the opening 216 is in communication with the pipeline 21;

[0051] When the second spring 214 is in the initial state, the switch 215 is in the area between the piston 22 and the baffle 211, and the switch 215 is not blocked by the piston 22 or the baffle 211;

[0052] When the switch 215 is in the open state, by adjusting the size of the opening 216, part of the gas in the air chamber 13 can flow to the opening 216 when the air chamber 13 is squeezed, and part of the gas pushes the piston 22 to move, after the piston 22 is pushed by the gas, the baffle 211 moves with the piston 22, which can block the opening 216.

[0053] By setting the switch 215, the switch 215 can adjust the size of the opening 216 by the way of the knob, so that when the air cavity 13 is squeezed, the gas in the air cavity can escape to the outside environment through the opening 216, and when the switch 215 is in the closed state, the gas in the air cavity 13 flows to the piston 22 through the pipeline 21 after being squeezed, so that the flowing gas can be used to push the piston 22 to move, that is, no matter how fast the patient holds the handgrip, as long as the air cavity 13 in the handgrip reaches a certain degree of squeezing, the piston 22 can be pushed and the piston 22 can squeeze the first pressure sensor 24, in this process, the patient's grip strength can be trained, and there is no need to require the patient to hold the handgrip fast;

[0054] When the switch 215 is in the open state, the opening 216 communicates the pipeline 21 and the outside environment, and when the handgrip is held to squeeze the air cavity 13, part of the gas escapes from the opening 216, and the size of the opening 216 is adjusted in advance, so that the opening 216 is small, and when the handgrip is held fast, the gas pressed out of the air cavity 13 cannot be all or most of it escaped from the opening 216 in a short time, so that most of the gas still plays a pushing role in the movement of the piston 22 in a short time, so that the piston 22 drives the baffle 211 to move relative to the pipeline 21, and in the process of moving the baffle 211, the baffle 211 gradually blocks the opening 216 until the opening 216 is completely blocked, and no matter how fast the patient holds the handgrip to squeeze the air cavity 13, the gas flowing out of the air cavity 13 can be used to push the piston 22 to move, so that the patient's speed of holding the handgrip to squeeze the air cavity 13 can be required in the training process, in the early stage of holding the handgrip, when the opening 216 is not blocked by the baffle 211, the gas flow rate in the pipeline 21 is slow when the patient squeezes the air cavity 13 at a slower speed, so that most of the gas escapes from the opening 216, making it difficult for the piston 22 to be pushed to be in contact with the first pressure sensor 24, and this grip training can be recorded as invalid training; when the patient squeezes the air cavity 13 at a faster speed, the gas flow rate in the pipeline 21 is fast, so that most of the gas cannot escape from the opening 216 in a short time, so that most of the gas pushes the piston 22 to move, and then the opening 216 is blocked by the baffle 211, and in the middle and late stages of holding the handgrip, after the opening 216 is blocked by the baffle 211, as the air cavity 13 is continuously squeezed, the squeezing force of the piston 22 on the first sensor 24 gradually increases, and in this process, there is no need to require the patient to squeeze the air cavity 13, so that the patient's short-time grip speed can be trained, that is, the explosive strength in the early stage of holding the handgrip, and the patient in the middle and late stages of grip training can further promote the maturation of the arteriovenous fistula vascular access;

[0055] Therefore, by controlling the switch 215 and adjusting the size of the opening 216, the training device of the present application can meet various training modes, further improving the flexibility of the patient in performing grip training.

[0056] Further, under the premise of forming the opening 216, when the grip of the grip strengthener is released, the piston 22 and the baffle 211 gradually reset in the process of restoring the deformation of the first spring 12 and the second spring 214, so that the baffle 211 gradually releases the blockage of the opening 216, and the gas in the external environment is supplemented into the air cavity 13 through 216, so as to perform subsequent grip training.

[0057] Further, the arm pressure belt 4 also includes a vibration motor 14. The vibration motor 14 provided on the arm pressure belt 4 can more clearly remind the patient that the grip training is up to standard, and at the same time, the vibration motor 14 on the pressure belt can also play a certain massage role, relieving the local discomfort of the patient.

[0058] Further, the central control part 3 also includes a Bluetooth module. Medical staff can download the relevant record data recorded in the central control module through a Bluetooth device, and the data includes the number of effective training and the number of invalid training, so that the medical staff can control the training completed by the patient, and can reduce the situation that the blood vessel access cannot be used due to insufficient training caused by the poor compliance of the patient. When the training amount does not reach the expectation in time, intervention and supervision are carried out in time to ensure that the blood vessel access of the patient can mature as soon as possible.

[0059] Further, the outer surface of the air bag 41 in contact with the arm also provides a second pressure sensor 42. The second pressure sensor 42 measures the pressure value between the arm pressure belt 4 and the arm, so as to ensure that the maximum pressure value provided can reach the expectation. If the pressure value is too small, the arm pressure belt 4 needs to be tightened, and the initial pressure value of the arm pressure belt 4 needs to be adjusted to achieve a better training effect.

[0060] Further, the body 11 also includes an anti-slip part, and the anti-slip part is provided with five grooves 15, and the shape of the groove 15 is inversely molded according to the fingers of the human hand.

[0061] Further, the anti-slip part is detachable from the body 11, and the body 11 is provided with an annular recess 16, and the anti-slip part is matched with the annular recess 16.

[0062] The anti-slip part can prevent the grip training device from falling accidentally, and the falling grip ball may injure the surgical arm of the patient; the detachable design of the anti-slip part can replace the anti-slip part. The grip strengthener is used for a long time and is inevitably dirty. The detachable design can be replaced and cleaned, and can be replaced for different patients.

[0063] Further, a transparent window is arranged on the pipe 21, and the transparent window is arranged on the sliding pipe segment of the piston 22.

[0064] The transparent window arranged on the pipe 21 can facilitate the patient to visually observe the speed of the piston 22 during the single gripping, so as to adjust the speed of each gripping. If the speed difference during the gripping is too large, the patient will feel more fatigue during the grip training, which is not conducive to the grip training. Therefore, the transparent window is arranged to enable the patient to adjust the speed of each gripping according to the speed comparison of the piston 22, so that the speed difference is not too large.

[0065] Further, the number of the vibration motors 14 arranged on the body 11 is preferably five, and the vibration motors 14 are arranged at the corresponding positions of the annular recess 16 and the grooves 15.

[0066] The vibration motors 14 are arranged at the corresponding positions of the annular recess 16 and the grooves 15, and the vibration will be used to remind the patient after the holding time is up. At the same time, the vibration arranged directly below the finger holding part 1 will be more strongly transmitted to the patient's hand, which can better remind the patient and also has a massage effect, so as to reduce the fatigue of the patient's fingers.

[0067] The above embodiments are only used to illustrate the technical solutions described in the present application and not to limit the technical solutions described in the present application. Although the present application has been described in detail with reference to the above embodiments, the present application is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present application; and all technical solutions and improvements without departing from the spirit and scope of the present application are all included in the scope of the claims of the present application.

Claims

1. A hand gripping training device for postoperative functional exercise of arteriovenous fistula, characterized in that: The holding part includes a holding part body, an air cavity in the body, a vibration motor in the body, and a first spring in the air cavity, wherein the deformation direction of the first spring is consistent with the force direction of the holding part; The connecting pipe includes a pipe, which is in communication with the air cavity, and a piston and a button in the pipe, wherein the gas in the air cavity can flow to the pipe by squeezing the air cavity, and the flowing gas can push the piston to move, so that the piston can contact the button, and the surface of the button is provided with a first pressure sensor for sensing the force applied by the piston on the first pressure sensor; The central control part is connected with the connecting pipe, and includes a power module, a single-chip microcomputer module, and a display screen. The arm pressure belt includes an air bag and a micro air pump, the micro air pump is in communication with the air bag, and the micro air pump is electrically connected with the central control part through a data line; the pipe is further provided with a baffle, a connecting piece, a base, and a second spring, the second spring has elasticity, the connecting piece connects the baffle and the piston, the baffle is attached to the inner wall of the pipe, the base is fixed in the pipe, the second spring connects the base and the baffle, a switch is arranged on the side wall of the pipe, the switch forms an opening when it is turned on, the switch can adjust the size of the opening, and the opening is in communication with the pipe; When the second spring is in an initial state, the switch is located in the area between the piston and the baffle, and the switch is not blocked by the piston or the baffle; When the switch is in an open state, by adjusting the size of the opening, part of the gas in the air cavity can flow to the opening when the air cavity is squeezed, and the piston can be moved by the part of the gas, and after the piston is pushed by the gas, the baffle moves with the piston to block the opening.

2. The fistula postoperative functional exercise hand holding training device according to claim 1, characterized in that: The arm pressure belt further includes a vibration motor, and the vibration motor on the arm pressure belt generates vibration to massage the patient's arm.

3. The fistula postoperative functional exercise hand holding training device according to claim 2, characterized in that: The central control part further includes a Bluetooth module.

4. The fistula post-operation functional exercise hand holding training device according to claim 2, characterized in that: The outer surface of the air bag and the arm contact surface are further provided with a second pressure sensor.

5. The fistula postoperative functional exercise hand holding training device according to claim 1, characterized in that: The body further includes an anti-slip part, the anti-slip part is provided with five grooves, and the grooves are inversely molded according to the fingers of a human hand.

6. The fistula postoperative functional exercise hand holding training device according to claim 5, characterized in that: The anti-slip part is detachable from the body, the body is provided with an annular recess, and the anti-slip part is adapted to the annular recess.

7. The fistula postoperative functional exercise hand holding training device according to claim 1, characterized in that: A transparent window is arranged on the pipe, and the transparent window is arranged on the sliding pipe segment of the piston.

8. The fistula postoperative functional exercise hand holding training device according to claim 6, characterized in that: Further, the number of vibration motors on the body is five, and the vibration motors are arranged at positions corresponding to the annular recesses and the grooves.

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