Grip ball for exercising internal arteriovenous fistula

Abstract

The invention relates to the technical field of internal arteriovenous fistula training, in particular to a grip ball for internal arteriovenous fistula training, which comprises a grip ball component, one end of the grip ball component is fixedly connected with one end of a rubber tube, and the grip ball component can change internal resistance through ventilation of an air pump. The other end of the rubber tube is fixedly connected with an inflation bandage, a counting display screen is arranged on one side of the inflation bandage, an adjustable massage assembly is fixedly connected to the upper portion of the grip ball assembly, a one-way valve is arranged on one side of the grip ball assembly, and a counting mechanism and a pressing switch mechanism are arranged in the inflation bandage. By arranging the grip ball assembly, the internal pressure of an inner supporting ball is increased to cause deformation of the outside, and under the balance of the internal pressure and the external pressure, due to the fact that the elastic coefficient of the inner supporting ball is smaller than that of the grip ball, the inner supporting ball and the grip ball are different from each other, a first spring is compressed or stretched, and therefore force resistance is changed.

Description

Technical Field

[0001] The present invention relates to the technical field of exercising arteriovenous fistulas, and more particularly to a grip ball for exercising arteriovenous fistulas. Background Art

[0002] An autologous arteriovenous fistula grip ball is an exercise device used by hemodialysis patients to exercise the autologous arteriovenous fistula blood vessels. After the operation, patients need to perform a large number of arm clenching trainings to help promote the maturation of the autologous arteriovenous fistula, so as to achieve sufficient blood flow to meet the needs of hemodialysis treatment. The arteriovenous fistula is the "lifeline" of hemodialysis patients. The success of its establishment surgery and the degree of postoperative exercise and recovery directly affect the dialysis quality and the survival rate of patients. As an exercise tool, the grip ball helps the maturation and rehabilitation of the fistula. By regularly using the grip ball for exercise, patients can maintain and improve the filling state of the fistula blood vessels, thereby improving the puncture success rate of nurses and reducing the occurrence of complications. The arteriovenous fistula is the "lifeline" of hemodialysis patients. The success of its establishment surgery and the degree of postoperative exercise and recovery directly affect the dialysis quality and the survival rate of patients. After arteriovenous fistula surgery, patients face the risks of thrombosis and stenosis. The exercise of the grip ball can accelerate blood circulation, prevent thrombosis, and also help prevent fistula stenosis.

[0003] Generally, for the grip ball for exercising arteriovenous fistulas, first select a suitable grip ball, place the inflatable strap on the upper arm of the limb on the arteriovenous fistula side, and then squeeze the grip ball so that the inflatable strap gradually squeezes the upper arm until the appropriate strength is reached and fixed. Subsequently, when squeezing the grip ball, the gas enters the strap, and when releasing the grip ball, the gas will return. In this way, both the hand and the fistula are exercised.

[0004] At present, during the exercise of the grip ball for exercising arteriovenous fistulas, the rehabilitation effect will continuously increase, and the strength allowed for the hand to squeeze the grip ball is greater. If the grip ball cannot adjust the internal resistance, the effect produced by the grip ball during exercise is poor. In addition, in the case of intermittent compression of the upper arm by the inflatable strap, the number of times when the pressure value of the pressure strap pressing the upper end of the limb reaches the preset value cannot be counted, and thus the recovery situation of the patient cannot be understood. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a grip ball for exercising arteriovenous fistulas to solve the problems existing in the above background art.

[0006] The present invention provides the following technical solution: A grip ball for exercising arteriovenous fistulas, comprising a grip ball assembly. One end of the grip ball assembly is fixedly connected to one end of a rubber tube. The grip ball assembly can change the internal resistance through ventilation by an air pump. The other end of the rubber tube is fixedly connected to an inflatable strap. One side of the inflatable strap is provided with a counting display screen. Above the grip ball assembly is fixedly connected with an adjustable massage assembly. One side of the grip ball assembly is provided with a one-way valve. Inside the inflatable strap are provided a counting mechanism and a pressing switch mechanism. Inside the grip ball assembly is provided a gas plug assembly; Further, the grip ball assembly includes a grip ball body. One end of the grip ball body is internally and externally penetrated with an access end, and the other end of the grip ball body is internally and externally penetrated with an output end. Inside the grip ball body is provided an inner support ball. Between the inner support ball and the grip ball body is supported and connected by a first spring. The inner support ball is internally and externally penetrated and connected with an internal ball inflatable tube.

[0007] Further, the internal ball inflatable tube is fixedly connected to the grip ball body, and the access end and the output end are respectively fixedly connected to the adjustable massage assembly.

[0008] Further, the inflatable strap includes an operation part and an inflatable part. The operation part is fixedly connected to the inflatable part. Inside the inflatable part is provided an inflatable cavity. One side of the operation part is provided with an opening and a ventilation hole. The outside of the ventilation hole is fixedly connected with a one-way intake valve. The bottom of the operation part is provided with a rebound placement cavity. Above the rebound placement cavity is provided a guiding cavity. The outer side wall of the rebound placement cavity is provided with a rotating shaft. The top end of the operation part is provided with a guiding port. The opening, the guiding port and the ventilation hole communicate with the inflatable cavity.

[0009] Further, the adjustable massage assembly includes a guiding box. Inside the guiding box is provided a square groove. Slidably connected inside the guiding box is a bow-shaped plate. The bottom of the bow-shaped plate is fixedly connected with a number of silicone massage contacts in an array. The vertical plate of the bow-shaped plate and the guiding box are fixed by a set screw.

[0010] Further, the counting mechanism includes a sliding round block. The sliding round block is located inside the guiding port and is slidably and sealingly connected to the guiding port. The bottom of the sliding round block is fixedly connected with a second spring. The bottom of the second spring is fixedly connected to the bottom of the guiding port. The sliding round block is always located above the connection port of the inflatable cavity and the guiding port. The top of the sliding round block is provided with a bell. The top of the guiding port is fixedly connected with a touch counting sensor.

[0011] Furthermore, the push switch mechanism includes a push rod, a sliding block is fixedly connected to the bottom of the push rod, a sliding switch block is provided at the bottom of one side of the sliding block, an up and down moving guide groove is provided on the other side wall of the sliding block, a guide rod is fixed to the bottom of the sliding block, a support rod is fixedly connected to the bottom of the rebound placement cavity, the support rod is coaxial with the guide rod, a third spring is provided between the support rod and the guide rod, a sliding rod is slidably connected inside the up and down moving guide groove, a connecting rod is rotatably connected to the sliding rod, and the other end of the connecting rod is rotatably connected to the rotating shaft.

[0012] Furthermore, the air plug assembly includes an air plug tube, which is in the shape of a bottomless bottle with a large tail and a small head. The tail of the air plug tube is fixedly connected to the outlet end of the internal ball inflation tube. The inside of the air plug tube is fixedly connected with a connecting ring. The head of the air plug tube is abutted and connected with a sealing block. A fourth spring in a stretched state is provided between the sealing block and the connecting ring. An air plug nozzle is fixed to the end of the sealing block close to the air plug tube.

[0013] Technical effects and advantages of the present invention: 9. The present invention is provided with a grip ball assembly, which is conducive to utilizing the increase in internal pressure of the inner support ball to cause external deformation. Under the balance of internal and external pressures, since the elastic coefficient of the inner support ball is smaller than that of the grip ball, the deformation of the inner support ball and the grip ball are different, causing the first spring to be compressed or stretched, thereby changing the force resistance.

[0014] 10. The present invention is provided with a counting mechanism and a counting display screen, which is conducive to utilizing the change of the pressure of the inflatable part to realize the contact or non-contact of the push ring and the touch counting sensor, and realizes the counting of the number of times the pressure value when compressing the upper end of the limb reaches a preset value.

[0015] 11. The present invention is provided with a grip ball assembly, an inflatable strap, and an adjustable massage assembly, which is conducive to utilizing the airflow of the inflatable part to expand the grip ball and open the patient's hand after the grip ball is released by the patient, and the back of the patient's fingers will be contacted and squeezed with the silicone massage contact points, thereby massaging the back of the patient's fingers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is an enlarged overall structural schematic diagram of the grip ball assembly and the adjustable massage assembly of the present invention; Figure 3 It is a schematic diagram of the assembly structure of the inflatable strap of the present invention; Figure 4 It is a cross-sectional view of the overall structure of the present invention; Figure 5 It is a cross-sectional view of the overall structure of the present invention from another angle; Figure 6 Schematic diagram of the half-section structure of the present invention; Figure 7 Schematic diagram of the half-section structure of the inflatable strap of the present invention; Figure 8 Assembly sectional view of the grip strength ball assembly and the adjustable massage assembly of the present invention; Figure 9 For the present invention Figure 8 Enlarged schematic diagram of part a.

[0017] Reference numerals are: 1, grip strength ball assembly; 101, grip strength ball body; 102, internal ball inflatable tube; 103, access end; 104, first spring; 105, inner support ball; 106, output end; 2, rubber tube; 3, inflatable strap; 301, operation part; 302, inflation part; 303, one-way intake valve; 304, opening; 305, rebound placement cavity; 306, guiding cavity; 307, rotating shaft; 308, guiding port; 309, inflation cavity; 3010, ventilation hole; 4, counting display screen; 5, adjustable massage assembly; 501, guiding box; 502, bow-shaped plate; 503, silicone massage contact point; 504, set screw; 6, one-way valve; 7, counting mechanism; 701, sliding round block; 702, bell; 703, second spring; 704, touch counting sensor; 8, pressing switch mechanism; 801, pressing rod; 802, sliding block; 803, up and down moving guide groove; 804, guide rod; 805, support rod; 806, third spring; 807, sliding switch block; 808, sliding rod; 809, connecting rod; 9, air plug assembly; 901, air plug tube; 902, connecting ring; 903, air plug nozzle; 904, sealing block; 905, fourth spring. Detailed implementation manners

[0018] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples, and a grip strength ball for exercising arteriovenous fistula involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0019] Refer to Figures 1-3, the present invention provides a grip ball for exercising arteriovenous fistulas, which includes a grip ball assembly 1. One end of the grip ball assembly 1 is fixedly connected to one end of a rubber tube 2, and the other end of the rubber tube 2 is fixedly connected to an inflatable strap 3. A counting display screen 4 is provided on one side of the inflatable strap 3. An adjustable massage assembly 5 is fixedly connected above the grip ball assembly 1. A one-way valve 6 is provided on one side of the grip ball assembly 1. A counting mechanism 7 and a pressing switch mechanism 8 are provided inside the inflatable strap 3. An air plug assembly 9 is provided inside the grip ball assembly 1; In this embodiment, it should be specifically noted that: the air pump for inflating the inside of the grip ball assembly 1 inflates the gas into the inside of the grip ball assembly 1 when inflation is required.

[0020] The main difference between this embodiment and the prior art is that in this embodiment, the pressure is increased by gas extrusion, so that the output end 106 generates a large deformation, causing the inner support ball 105 to be squeezed, increasing a large elastic squeezing force, and realizing the adjustment of the internal resistance of the grip ball body 101. Specifically, it lies in the grip ball assembly 1, the counting mechanism 7, and the air plug assembly 9 The above structure is the main structure of this embodiment, which solves the problem of counting the number of times the pressure value reaches the preset value by using the pressure inside the inflatable part 302 to increase to a certain extent to generate a force so that the sliding round block 701 collides with the touch counting sensor 704, and the sliding round block 701 separates from the touch counting sensor 704 after the pressure drops. The air pump is a conventional structure, and the specific structure and connection method of the air pump are not specifically described in this embodiment.

[0021] Referring to Figure 8 , the grip ball assembly 1 includes a grip ball body 101. One end of the grip ball body 101 is internally and externally penetrated with an access end 103, and the other end of the grip ball body 101 is internally and externally penetrated with an output end 106. An inner support ball 105 is provided inside the grip ball body 101. A first spring 104 is provided between the inner support ball 105 and the grip ball body 101 for supporting connection. The inner support ball 105 is internally and externally penetrated and connected with an internal ball inflatable tube 102, and the internal ball inflatable tube 102 is fixedly connected to the grip ball body 101. The access end 103 and the output end 106 are respectively fixedly connected to the adjustable massage assembly 5.

[0022] In this embodiment, it should be specifically noted that: the patient pinches the grip ball body 101 to cause it to deform, and compresses the inner support ball 105 to make the inner support ball 105 undergo squeezing deformation. The air inside the grip ball body 101 enters the inflatable strap 3 through the rubber tube 2. When the patient releases the grip ball body 101, the grip ball body 101 returns to its original state under the elastic restoring force of the inner support ball 105. At this time, the space inside the grip ball body 101 increases, the air content remains unchanged and a negative pressure is generated. The negative pressure inside the grip ball body 101 sucks air from the outside through the one-way valve 6 until the grip ball body 101 returns to its original state.

[0023] Reference Figure 3 、 Figure 5 and Figure 7 , the inflatable strap 3 includes an operation part 301 and an inflation part 302. The operation part 301 is fixedly connected to the inflation part 302. An inflation chamber 309 is provided inside the inflation part 302. An opening 304 and a ventilation hole 3010 are provided on one side of the operation part 301. A one-way intake valve 303 is fixedly connected to the outside of the ventilation hole 3010. A rebound placement chamber 305 is provided at the bottom of the operation part 301. A guiding chamber 306 is provided above the rebound placement chamber 305. A rotating shaft 307 is provided on the outer side wall of the rebound placement chamber 305. A guiding port 308 is provided at the top of the operation part 301. The opening 304, the guiding port 308 and the ventilation hole 3010 communicate with the inflation chamber 309.

[0024] In this embodiment, it should be specifically noted that: the inflatable strap 3 is fixed at a suitable position on the arm for the internal fistula operation through the inflation part 302. During the process that the grip sphere 101 is continuously pinched and restored to its original shape, the inflation chamber 309 is continuously inflated repeatedly. When the inflation part 302 expands to firmly clamp on the arm, the inflation of the inflation chamber 309 is stopped.

[0025] Reference Figure 2 , the adjustable massage component 5 includes a guiding box 501. A square groove is provided inside the guiding box 501. An arc-shaped plate 502 is slidably connected inside the guiding box 501. A number of silicone massage contacts 503 are fixedly connected to the bottom of the arc-shaped plate 502. The vertical plate of the arc-shaped plate 502 and the guiding box 501 are fixed by a set screw 504.

[0026] In this embodiment, it should be specifically noted that: the four fingers of the patient are located between the arc-shaped plate 502 and the grip sphere 101. At this time, loosen the set screw 504 so that the arc-shaped plate 502 can slide inside the guiding box 501, and adjust the distance between the arc-shaped plate 502 and the fingers. When the patient pinches and then releases the grip sphere 101, the back of the fingers comes into extrusion contact with the silicone massage contacts 503 under the complete rebound of the gas in the grip sphere 101, so that the silicone massage contacts 503 can perform extrusion massage on the back of the fingers, and then fix the arc-shaped plate 502 with the set screw 504.

[0027] Reference Figure 5 , the counting mechanism 7 includes a sliding round block 701. The sliding round block 701 is located in the guiding port 308 and is slidably and sealingly connected to the guiding port 308. A second spring 703 is fixedly connected to the bottom of the sliding round block 701. The bottom of the second spring 703 is fixedly connected to the bottom of the guiding port 308. The sliding round block 701 is always located above the connection port of the inflation chamber 309 and the guiding port 308. A bell 702 is provided on the top of the sliding round block 701. A touch counting sensor 704 is fixedly connected to the top of the guiding port 308.

[0028] In this embodiment, it should be specifically noted that when the internal pressure of the inflation chamber 309 reaches the maximum and the bell 702 reaches the highest point, if the bell 702 does not collide with the touch counting sensor 704 at this time, that is, the bell 702 does not ring, it indicates that the resistance inside the grip sphere 101 is too large. If the bell 702 collides with the touch counting sensor 704 before the most suitable force inside the grip sphere 101 is fully released, it indicates that the resistance inside the grip sphere 101 is too small.

[0029] Refer to Figures 4-6 , the pressing switch mechanism 8 includes a pressing rod 801. A sliding block 802 is fixedly connected to the bottom of the pressing rod 801. A sliding switch block 807 is provided at the bottom of one side of the sliding block 802. An up-and-down moving guide groove 803 is provided on the other side wall of the sliding block 802. A guide rod 804 is fixed to the bottom of the sliding block 802. A support rod 805 is fixedly connected to the bottom of the spring return placement cavity 305. The support rod 805 and the guide rod 804 are coaxial. A third spring 806 is provided between the support rod 805 and the guide rod 804. A sliding rod 808 is slidably connected inside the up-and-down moving guide groove 803. A connecting rod 809 is rotatably connected to the sliding rod 808. The other end of the connecting rod 809 is rotatably connected to the rotating shaft 307.

[0030] In this embodiment, it should be specifically noted that when the user presses the pressing rod 801, the pressing rod 801 drives the sliding block 802 to descend. During the descent of the sliding block 802, the sliding rod 808 moves upward along the left half of the up-and-down moving guide groove 803 under the guidance of the up-and-down moving guide groove 803, and the third spring 806 is also compressed to accumulate extrusion force. When the sliding rod 808 reaches the top of the up-and-down moving guide groove 803, it remains stationary under the action of the groove of the up-and-down moving guide groove 803. At this time, the sliding switch block 807 also descends to completely block the opening 304. When the pressing rod 801 is pressed again, the sliding rod 808 moves downward along the right half of the up-and-down moving guide groove 803, and the sliding block 802 and the sliding switch block 807 move upward under the rebounding force of the third spring 806 until the sliding rod 808 is stuck at the bottom of the up-and-down moving guide groove 803. At this time, the opening 304 is completely opened, and the grip sphere 101 is completely communicated with the inflation chamber 309.

[0031] Refer to Figure 9 , the air plug assembly 9 includes an air plug tube 901. The air plug tube 901 is in the shape of a bottomless bottle with a large tail and a small head. The tail of the air plug tube 901 is fixedly connected to the outlet end of the internal ball inflation tube 102. A connecting ring 902 is fixedly connected inside the air plug tube 901. A sealing block 904 is in contact connection with the head of the air plug tube 901. A fourth spring 905 in a stretched state is provided between the sealing block 904 and the connecting ring 902. An air plug nozzle 903 is fixed to one end of the sealing block 904 close to the air plug tube 901.

[0032] In this embodiment, it should be specifically noted that: the resistance inside the grip strength sphere 101 is too small, that is, it is necessary to inflate the inside of the output end 106. The air pump port bumps against the air plug nozzle 903, the sealing block 904 is opened, the fourth spring 905 is stretched, and the inside of the output end 106 is inflated. To deflate the inside of the output end 106, manually press the air plug nozzle 903, the sealing block 904 is opened, and the gas inside the output end 106 is discharged.

[0033] The working principle of the present invention: The main problem solved by this embodiment is: using gas extrusion to increase the pressure, so that the output end 106 generates a large deformation, causing the inner support sphere 105 to be squeezed, increasing a large elastic squeezing force, realizing the adjustment of the resistance inside the grip strength sphere 101, and using the pressure inside the inflation part 302 to increase to a certain extent to generate a force so that the sliding circular block 701 collides with the touch counting sensor 704, and when the pressure drops, the sliding circular block 701 separates from the touch counting sensor 704 to realize the counting of the number of times the pressure value reaches the preset value.

[0034] The specific steps are as follows: First, the patient gets the grip ball for exercising the arteriovenous fistula and holds the grip strength sphere 101 in the hand. The four fingers are located between the arcuate plate 502 and the grip strength sphere 101. At this time, loosen the set screw 504 so that the arcuate plate 502 can slide inside the guide box 501, adjust the distance between the arcuate plate 502 and the fingers, so that when the patient pinches the grip strength sphere 101 and then releases the grip strength sphere 101, the back of the finger is in contact with the silicone massage contact point 503 under the complete rebound of the gas in the grip strength sphere 101, so that the silicone massage contact point 503 can squeeze and massage the back of the finger, and then fix the arcuate plate 502 with the set screw 504. Subsequently, pass the inflation part 302 through the arm of the internal fistula surgery and place it at a suitable position; Subsequently, the patient presses the pressing rod 801, and the pressing rod 801 drives the sliding block 802 to descend. During the descent of the sliding block 802, the sliding rod 808 moves upward along the left half of the up and down moving guide groove 803 under the guidance of the up and down moving guide groove 803, and the third spring 806 is also compressed to accumulate squeezing force. When the sliding rod 808 reaches the top of the up and down moving guide groove 803, it remains stationary under the action of the groove of the up and down moving guide groove 803. At this time, the sliding switch block 807 also descends to completely block the opening 304; Then, inflate the inside of the inflation chamber 309. The patient squeezes the grip sphere 101, causing it to deform and compressing the inner support sphere 105 so that the inner support sphere 105 undergoes squeezing deformation. The air inside the grip sphere 101 passes through the rubber tube 2 and then through the one-way intake valve 303 into the inflation chamber 309. When the patient releases the grip sphere 101, the grip sphere 101 returns to its original shape under the elastic restoring force of the inner support sphere 105. At this time, the space inside the grip sphere 101 increases, the air content remains unchanged, creating a negative pressure. Due to the presence of the one-way intake valve 303, the gas inside the inflation chamber 309 only enters and does not exit. Therefore, the negative pressure inside the grip sphere 101 draws air from the outside through the one-way valve 6 until the air pressure inside the grip sphere 101 is equal to the external air pressure when the grip sphere 101 returns to its original shape. In this process of continuously squeezing and restoring the grip sphere 101, the inflation of the inside of the inflation chamber 309 is repeated continuously. When the inflation part 302 expands to firmly clamp on the arm, the inflation of the inside of the inflation chamber 309 is stopped; Subsequently, close the access end 103, press the pressing rod 801 again, and the sliding rod 808 moves downward along the right half of the vertical movement guide groove 803. The sliding block 802 and the sliding switch block 807 move upward under the rebounding force of the third spring 806 until the sliding rod 808 gets stuck at the bottom of the vertical movement guide groove 803. At this time, the opening 304 is completely opened, and the grip sphere 101 is completely communicated with the inflation chamber 309; The patient's hand that underwent fistula surgery uses the force that is most suitable for rehabilitation and exercise to squeeze the grip sphere 101. When the grip sphere 101 is deformed, the air inside the grip sphere 101 enters the inflation chamber 309 through the vent 3010. The inflation chamber 309 is pressurized and expanded to perform squeezing exercise on the arm. At this time, the pressure inside the inflation chamber 309 increases, and the gas squeezes the sliding round block 701 and the bell 702 to rise along the guide port 308. The second spring 703 is stretched and deformed. When the pressure inside the inflation chamber 309 reaches the maximum and the bell 702 reaches the highest point, if the bell 702 touches the counting sensor at this time Sensor 704 did not collide, that is, bell 702 did not make a ringing sound, which means that the resistance inside the grip sphere 101 is too large. At this time, it is necessary to adjust the resistance inside the grip sphere 101, that is, it is necessary to deflate the output end 106. Manually press the air plug nozzle 903, the sealing block 904 is opened, the gas inside the output end 106 is discharged, and the pressure becomes smaller. At this time, the output end 106 contracts, and the elastic coefficient of the output end 106 is smaller than that of the grip sphere 101, that is, under the same pressure, the output end 106 is deformed larger, the internal pressure of the output end 106 is reduced, and the internal space of the grip sphere 101 is increased. , the pressure becomes smaller, and gradually the internal and external pressures of the output end 106 are balanced. At this time, the deformation of the output end 106 is greater than the deformation of the grip sphere 101, the inner support ball 105 is stretched and lengthened, and the resistance inside the grip sphere 101 is reduced. If the bell 702 and the touch count sensor 704 collide before the patient's most appropriate force is fully released, it means that the resistance inside the grip sphere 101 is too small, that is, it is necessary to inflate the inside of the output end 106, and the air pump port hits the air plug nozzle 903, the sealing block 904 opens, and the fourth spring 905 is stretched to the inside of the output end 106. The output end 106 is inflated, and the output end 106 expands at this time, because the elastic coefficient of the output end 106 is smaller than that of the grip sphere 101, that is, the output end 106 is deformed more under the same pressure, the internal pressure of the output end 106 increases, the air inside the grip sphere 101 is compressed and the pressure increases, and gradually the internal and external pressures of the output end 106 are balanced. At this time, the deformation of the output end 106 is greater than the deformation of the grip sphere 101, the inner support ball 105 is compressed and shortened, and the resistance inside the grip sphere 101 increases. After continuous adjustment, the patient's most suitable force is reached, and the bell 702 just makes a ringing sound; The patient starts exercising and continuously squeezes the grip ball 101 with the hand that had the fistula surgery. After the gas enters the inflation chamber 309 from the grip ball 101, it squeezes the upper part of the fistula of the arm to make the arteriovenous fistula blood vessels expand and fill appropriately. If the patient recovers well and the strength is increased, the resistance inside the grip ball 101 can be increased again. During the exercise, the counting display screen 4 can be used to count the number of times the pressure value when the patient presses the upper end of the limb reaches the preset value.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A grip ball for exercising arteriovenous fistula, comprising a grip ball assembly (1), characterized in that: One end of the grip ball assembly (1) is fixedly connected to one end of a rubber tube (2); the grip ball assembly (1) can change internal resistance through ventilation of an air pump; the other end of the rubber tube (2) is fixedly connected to an inflatable strap (3); a counting display screen (4) is provided on one side of the inflatable strap (3); an adjustable massage assembly (5) is fixedly connected above the grip ball assembly (1); a one-way valve (6) is provided on one side of the grip ball assembly (1); a counting mechanism (7) and a push switch mechanism (8) are provided inside the inflatable strap (3); and an air plug assembly (9) is provided inside the grip ball assembly (1).

2. A grip ball for training arteriovenous fistula according to claim 1, characterized in that: The grip ball assembly (1) comprises a grip ball (101), one end of the grip ball (101) is connected inside and outside with an access end (103), and the other end of the grip ball (101) is connected inside and outside with an output end (106). An inner support ball (105) is provided inside the grip ball (101), a first spring (104) is supported and connected between the inner support ball (105) and the grip ball (101), and an inner ball inflation tube (102) is connected inside and outside the inner support ball (105).

3. A grip ball for training arteriovenous fistula according to claim 2, characterized in that: The inner ball inflation tube (102) is fixedly connected to the gripping ball (101), and the input end (103) and the output end (106) are respectively fixedly connected to the adjustable massage component (5).

4. The grip ball for exercising arteriovenous fistula according to claim 1, characterized in that: The inflatable strap (3) comprises an operating portion (301) and an inflatable portion (302); the operating portion (301) is fixedly connected to the inflatable portion (302); an inflatable cavity (309) is provided inside the inflatable portion (302); an opening (304) and an air vent (3010) are provided on one side of the operating portion (301); a one-way air inlet valve (303) is fixedly connected to the outside of the air vent (3010); a rebound placement cavity (305) is provided at the bottom of the operating portion (301); a guide cavity (306) is provided above the rebound placement cavity (305); a rotating shaft (307) is provided on the outer side wall of the rebound placement cavity (305); a guide opening (308) is provided at the top of the operating portion (301); the opening (304), the guide opening (308) and the air vent (3010) are connected to the inflatable cavity (309).

5. The grip ball for exercising arteriovenous fistula according to claim 1, characterized in that: The adjustable massage component (5) comprises a guide box (501), a square groove is provided inside the guide box (501), a bow plate (502) is slidably connected inside the guide box (501), a plurality of silicone massage contacts (503) in an array are fixedly connected to the bottom of the bow plate (502), and a vertical plate of the bow plate (502) is fixed to the guide box (501) by means of a set screw (504).

6. The grip ball for exercising arteriovenous fistula according to claim 4, characterized in that: The counting mechanism (7) comprises a sliding round block (701), the sliding round block (701) is located in the guide opening (308) and is slidingly and sealingly connected to the guide opening (308), the bottom of the sliding round block (701) is fixedly connected to a second spring (703), the bottom of the second spring (703) is fixedly connected to the bottom of the guide opening (308), the sliding round block (701) is always located above the connection between the inflation cavity (309) and the guide opening (308), a bell (702) is provided on the top of the sliding round block (701), and the top of the guide opening (308) is fixedly connected to a touch counting sensor (704).

7. The grip ball for exercising arteriovenous fistula according to claim 4, characterized in that: The push switch mechanism (8) comprises a push rod (801), the bottom of the push rod (801) is fixedly connected to a sliding block (802), the bottom of one side of the sliding block (802) is provided with a sliding switch block (807), the other side wall of the sliding block (802) is provided with an up-and-down moving guide groove (803), the bottom of the sliding block (802) is fixedly connected to a guide rod (804), the bottom of the rebound placement cavity (305) is fixedly connected to a support rod (805), the support rod (805) and the guide rod (804) are coaxial, a third spring (806) is provided between the support rod (805) and the guide rod (804), the interior of the up-and-down moving guide groove (803) is slidably connected to a sliding rod (808), the sliding rod (808) is rotatably connected to a connecting rod (809), and the other end of the connecting rod (809) is rotatably connected to a rotating shaft (307).

8. The grip ball for exercising arteriovenous fistula according to claim 2, characterized in that: The air plug assembly (9) comprises an air plug tube (901), the air plug tube (901) is in the shape of a bottomless bottle with a large tail and a small head, the tail of the air plug tube (901) is fixedly connected to the outlet end of the internal ball inflation tube (102), the interior of the air plug tube (901) is fixedly connected with a connecting ring (902), the head of the air plug tube (901) is butt-connected with a sealing block (904), a fourth spring (905) in a stretched state is provided between the sealing block (904) and the connecting ring (902), and an air plug nozzle (903) is fixedly provided at one end of the sealing block (904) close to the air plug tube (901).

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