Water circulation type upper limb edema measuring instrument

Abstract

The invention relates to the technical field of upper limb edema measurement, and provides a water circulation type upper limb edema measuring instrument, which comprises a measuring mechanism, a scanning mechanism, a water circulation mechanism and a main body, and is characterized in that the measuring mechanism is arranged on one side of the main body, the scanning mechanism is arranged in the main body, and the water circulation mechanism is arranged in the main body. The water circulation mechanism is arranged on the other side of the main body, the measuring mechanism comprises a measuring frame, a floating plate and a top cover, through the arrangement of a leather sheath, a displacement sensor and other structures, when the device needs to be used, a patient stretches the upper limb into the leather sheath, at the moment, liquid in the main body is squeezed, water flows into the measuring frame from a water inlet pipe, and the upper limb of the patient can be measured; according to the technical scheme, the floating plate is lifted, a doctor can visually observe the edema degree of the upper limb through data transmitted by the displacement sensor and assistance of the side marking lines, observation of the doctor is more accurate, and the problems that in the prior art, the measurement accuracy is insufficient, and the comfort degree is low are solved through the technical scheme.

Description

Technical Field

[0001] The invention relates to the technical field of upper limb edema measurement, and in particular to a water circulation type upper limb edema measuring instrument. Background Art

[0002] At present, upper limb edema measurement refers to a series of actions to evaluate the degree of edema caused by excessive interstitial fluid in the upper limbs.

[0003] The prior art discloses an instrument for measuring changes in upper limb edema, with the authorization announcement number CN212996427U. The patent discloses an instrument for measuring changes in upper limb edema, and relates to the technical field of measuring changes in edema. During operation, the inflation hole position of the metering cylinder is first inflated inwardly, and the gas will pass through the airtight arm sleeve and the leather sleeve in sequence along one end of the connecting tube in the metering cylinder. After the inflation is completed, the swollen upper limb is then extended from the leather sleeve into the airtight arm sleeve together with the leather sleeve. At this time, different degrees of gas will be brought into the metering cylinder along the connecting tube due to the size of the upper limb edema. The suspension plug will rise along the metering cylinder due to the impact of the gas and stop after reaching a certain amount of gas, thereby the degree of edema can be seen. After the end, the edematous upper limb will be pulled out, and the suspension plug will fall freely due to the influence of gravity. The utility model is in a sealed state, which makes the measurement more accurate and the structure simple.

[0004] However, when measuring according to this patent, the doctor can only observe the position of the suspension plug to judge the swelling of the upper limb. The observation method is single and the data is not compared, which makes its accuracy questionable. In addition, when using this patent, the patient's upper limb needs to be inserted into the leather case for pulling, and there is no auxiliary support inside, which causes pain to the patient when inserting the leather case, and the comfort level is low. Summary of the invention

[0005] The present invention provides a water circulation type upper limb edema measuring instrument, which solves the problems of insufficient measurement accuracy and low comfort in the related art.

[0006] The technical solution of the present invention is as follows: A water circulation type upper limb edema measuring instrument, comprising a measuring mechanism, a scanning mechanism, a water circulation mechanism and a main body, characterized in that: the measuring mechanism is arranged on one side of the main body, the scanning mechanism is arranged inside the main body, and the water circulation mechanism is arranged on the other side of the main body; The measuring mechanism includes a measuring frame, a floating plate and a top cover, the measuring frame is fixedly connected to one side of the main body, the floating plate is slidably assembled inside the measuring frame, a top column is fixedly connected to the top of the floating plate, an inner groove column is fixedly connected to the inside of the measuring frame, the top column is slidably assembled inside the inner groove column, a spring is commonly connected between the inner groove column and the top column, a displacement sensor is installed on the top of the top column, the top cover is slidably assembled on the top of the main body, and a leather cover is provided inside the top cover.

[0007] As a preferred solution of the present invention, a second sealing gasket is arranged on the outer peripheral surface of the top cover, a top connection block is fixedly connected to the top of the main body, a first sealing gasket is arranged on the inner wall of the top connection block, the first sealing gasket and the second sealing gasket are staggered with each other, two symmetrically arranged pull rings are fixedly connected to the top of the top cover, side markings are arranged on the main body, and a water inlet pipe is commonly connected between the main body and the measuring frame, and the staggered arrangement of the first sealing top and the second sealing gasket can make the top cover fixed and sealed at the same time, and the setting of the pull ring can pull up and replace the top cover after use, and the side markings make it possible to effectively observe the sliding of the floating plate.

[0008] As a preferred solution of the present invention, dampers are provided at both ends of the spring, two symmetrically arranged floats are provided at the bottom of the float plate, a sealing ring is provided at the bottom of the float plate, a first transparent observation plate is fixedly connected to one side of the main body, a second transparent observation plate is fixedly connected to one side of the measuring frame, and an air hole is provided at the top of the measuring frame. The setting of the damper can effectively prevent the spring from sliding back and forth, the float increases the buoyancy of the float, and the sealing ring at the bottom of the float can prevent liquid from flowing into the top part of the float, the first observation plate is used to observe the extension of the patient's upper limbs, and the second observation plate is used to observe the sliding of the float.

[0009] As a preferred solution of the present invention, the scanning mechanism includes a lead screw motor, a servo motor and two symmetrically arranged limit rods, the lead screw motor is installed inside the main body, the output end of the lead screw motor is connected to a coaxially arranged transmission lead screw through a coupling, the two limit rods are fixedly connected to the inside of the main body, a circular frame is jointly sleeved on the outer circumference of the transmission lead screw and the two limit rods, a circular rack is fixedly connected to the inside of the circular frame, a servo motor is installed at the bottom of the circular frame, the output end of the servo motor is connected to a coaxially arranged rotating shaft through a coupling, a gear is fixedly sleeved on the outer circumference of the rotating shaft, the gear is meshed with the circular rack, a turntable is fixedly connected to the top of the rotating shaft, a second limit block is movably sleeved on the outer circumference of the turntable, and an ultrasonic three-dimensional scanning probe is installed on one side of the second limit block.

[0010] As a preferred solution of the present invention, two first limit blocks are fixedly connected to the top of the screw motor, and the first limit blocks are slidably assembled on the bottom of the circular frame. Two symmetrically arranged auxiliary balls are rotatably installed inside the first limit blocks. The setting of the first limit blocks enables the screw motor to slide along the direction of the circular frame when it rotates, and the auxiliary balls make its sliding smoother.

[0011] As a preferred solution of the present invention, a plurality of auxiliary rotating balls evenly distributed around the circumference are installed for internal rotation of the turntable, the second limit block is slidably assembled inside the circular frame, and four symmetrically arranged auxiliary round balls are installed for internal rotation of the second limit block. The auxiliary balls ensure that the second limit block is not affected by the rotation of the turntable when sliding along the circular frame, and the setting of the auxiliary round balls makes the sliding of the second limit block smoother.

[0012] As a preferred embodiment of the present invention, the water circulation mechanism includes a circulation frame, a one-way pump and a water pump, the circulation frame is fixedly connected to one side of the main body, the one-way pump is installed inside the circulation frame, the output end and the input end of the one-way pump are respectively installed with a main water outlet pipe and a main water inlet pipe, one end of the main water inlet pipe is fixedly connected to a plurality of branch water inlet pipes equidistantly distributed in an array, one end of the main water outlet pipe is fixedly connected to a plurality of branch water outlet pipes equidistantly distributed in an array, and the water pump is installed at the bottom of the main water outlet pipe.

[0013] As a preferred solution of the present invention, a one-way valve is installed at the bottom of the main water outlet pipe, one end of the main water outlet pipe is fixedly connected to a water inlet interface, a control panel and an external cable are respectively installed on one side of the circulation frame, the setting of the reverse valve can effectively prevent the liquid from flowing back, and the water inlet interface is convenient for replenishing water inside the main body, and the equipment can be powered and controlled through the setting of the control panel and the external cable.

[0014] The working principle and beneficial effects of the present invention are: 1. The present invention is provided with structures such as a leather case and a displacement sensor. When the device needs to be used, the patient extends the upper limb into the leather case. At this time, because the liquid inside the main body is squeezed, water flows into the inside of the measuring frame from the water inlet pipe, causing the float to rise. The doctor can visually observe the degree of edema of the upper limb with the help of the data transmitted by the displacement sensor and the side markings, making the doctor's observation more accurate.

[0015] 2. The present invention sets up structures such as a servo motor and an ultrasonic three-dimensional scanning probe. After the patient's upper limb is fully inserted into the main body, the servo motor and the screw motor are turned on at the same time, so that the ultrasonic three-dimensional scanning probe measures the upper and lower circumferences of the upper limb. After the measurement of the swollen upper limb is completed, the patient extends the other upper limb into the main body for comparative measurement, and the edema position of the patient is accurately located, thereby improving the accuracy of its use.

[0016] 3. The present invention sets up structures such as a one-way pump and a branch water pipe. When the patient's upper limb is extended for measurement, the one-way pump is turned on, and the one-way pump draws water into the branch water pipe, passes through the main water inlet pipe and the main water outlet pipe, and is sent out from the branch water outlet pipe, so that the water completes the circulation inside the main body, performs water circulation flushing on the patient's upper limb, reduces the pain level of the patient's upper limb, and improves the comfort of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a bottom view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the overall structure of the top connection block of the present invention; Figure 4 This is a schematic diagram of the internal structure of the measurement frame of the present invention; Figure 5 It is a schematic diagram of the floating plate transmission structure of the present invention; Figure 6 This is a schematic diagram of the bottom structure of the top cover of the present invention; Figure 7 This is a schematic diagram of the circular frame transmission structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the circular frame of the present invention; Fig. 9 This is a schematic diagram of the transmission structure of the ultrasonic three-dimensional scanning probe of the present invention; Fig.10 It is a schematic diagram of the internal structure of the circulation frame of the present invention.

[0019] In the figure: 1, measuring mechanism; 11, main body; 111, top block; 112, first sealing gasket; 113, first transparent observation plate; 12, top cover; 121, pull ring; 122, leather case; 123, second sealing gasket; 13, measuring frame; 131, side marking line; 132, second transparent observation plate; 133, water inlet pipe; 14, floating plate; 141, floating ball; 142, sealing ring; 143, top column; 144, spring; 145, damper; 146, displacement sensor; 147, inner groove column; 2. Scanning mechanism; 21. Screw motor; 211. Transmission screw; 212. Limit rod; 22. Round frame; 221. Round rack; 23. Servo motor; 231. First limit block; 232. Auxiliary ball; 233. Rotating shaft; 234. Gear; 235. Turntable; 236. Auxiliary rotating ball; 24. Second limit block; 241. Auxiliary round ball; 242. Ultrasonic three-dimensional scanning probe; 3. Water circulation mechanism; 31. Circulation frame; 311. One-way pump; 312. Main water inlet pipe; 313. Main water outlet pipe; 314. Branch water inlet pipe; 315. Branch water outlet pipe; 32. One-way valve; 321. Water pump; 322. Water inlet interface; 33. Control panel; 34. External cables. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1 like Figure 1 to Figure 10 As shown, this embodiment proposes a water circulation type upper limb edema measuring instrument, including a measuring mechanism 1, a scanning mechanism 2, a water circulation mechanism 3 and a main body 11, wherein the measuring mechanism 1 is arranged on one side of the main body 11, the scanning mechanism 2 is arranged inside the main body 11, and the water circulation mechanism 3 is arranged on the other side of the main body 11; The measuring mechanism 1 includes a measuring frame 13, a floating plate 14 and a top cover 12. The measuring frame 13 is fixedly connected to one side of the main body 11. The floating plate 14 is slidably assembled inside the measuring frame 13. A top column 143 is fixedly connected to the top of the floating plate 14. An inner groove column 147 is fixedly connected to the inside of the measuring frame 13. The top column 143 is slidably assembled inside the inner groove column 147. A spring 144 is commonly connected between the inner groove column 147 and the top column 143. A displacement sensor 146 is installed on the top of the top column 143. The top cover 12 is slidably assembled on the top of the floating plate 143. A leather case 122 is provided inside the top cover 12 of the main body 11. Through the arrangement of the leather case 122, the displacement sensor 146 and other structures, when the device needs to be used, the patient extends the upper limb into the leather case 122. At this time, because the liquid inside the main body 11 is squeezed, water flows from the water inlet pipe 133 into the measuring frame 13, causing the float 14 to rise. The doctor can use the data transmitted by the displacement sensor 146 and the side marking line 131 to intuitively observe the degree of edema of the upper limb, making the doctor's observation more accurate.

[0022] like Figure 1 to Figure 6As shown, a second sealing gasket 123 is arranged on the outer peripheral surface of the top cover 12, a top connection block 111 is fixedly connected to the top of the main body 11, a first sealing gasket 112 is arranged on the inner wall of the top connection block 111, the first sealing gasket 112 and the second sealing gasket 123 are staggered with each other, two symmetrically arranged pull rings 121 are fixedly connected to the top of the top cover 12, side marking lines 131 are arranged on the main body 11, and a water inlet pipe 133 is commonly connected between the main body 11 and the measuring frame 13, and the staggered arrangement of the first sealing top and the second sealing gasket 123 can make the top cover 12 fixed and sealed at the same time, and the setting of the pull ring 121 can pull up and replace the top cover 12 after use, and the side marking lines 131 make it possible to effectively observe the sliding of the floating plate 14.

[0023] like Figure 1~Figure 5 As shown, dampers 145 are provided at both ends of the spring 144, two symmetrically arranged floats 141 are provided at the bottom of the float plate 14, a sealing ring 142 is provided at the bottom of the float plate 14, a first transparent observation plate 113 is fixedly connected to one side of the main body 11, a second transparent observation plate 132 is fixedly connected to one side of the measuring frame 13, and an air hole is provided at the top of the measuring frame 13. The setting of the damper 145 can effectively prevent the spring 144 from sliding back and forth, the float 141 increases the buoyancy of the float plate 14, and the sealing ring 142 at the bottom of the float plate 14 can prevent liquid from flowing into the top part of the float plate 14. The first observation plate is used to observe the extension of the patient's upper limbs, and the second observation plate is used to observe the sliding of the float plate 14.

[0024] In this embodiment, before using the device, the liquid inside the main body 11 is first filled, and then the top cover 12 is covered to the inside of the top connecting block 111. When the top cover 12 is covered to the inside of the top connecting block 111, the second sealing gasket 123 is squeezed into the bottom of the first sealing gasket 112. At this time, the first sealing gasket 112 and the second sealing gasket 123 are placed crosswise, which prevents the top cover 12 from slipping out while ensuring the sealing performance. When the top cover 12 needs to be taken out, it is only necessary to pull the pull rings 121 on both sides, so that the top cover 12 is easy to replace after use, and it is convenient to disinfect it, and it also makes the patient's use cleaner. After the top cover 12 is set, the patient extends his upper limb into the leather cover 122, and the leather cover 122 slides into the main body 11 due to the extension of the patient's upper limb. At this time, the liquid inside the main body 11 is squeezed when the patient's upper limb is extended, and the liquid enters the measuring instrument from the water inlet pipe 133 After the liquid enters the measuring frame 13, the float plate 14 is squeezed and lifted. A float ball 141 is also provided on the float plate 14 to increase its buoyancy. During the upward sliding of the float plate 14, the top column 143 inside the inner groove column 147 slides upward. At this time, the displacement sensor 146 measures its displacement and transmits the measurement data to the controller. The doctor can observe the data. A side marking line 131 is also provided on one side of the main body 11. The setting of the side marking line 131 allows the doctor to intuitively observe the position of the float plate 14 during its ascent. When the patient's upper limb edema measurement is completed and retracted, the float plate 14 is squeezed back to its original position by the spring 144 through the setting of the spring 144 for reset. Through visual observation and auxiliary measurement of the displacement sensor 146, the doctor's observation is more accurate.

[0025] Example 2 like Figure 1 to Figure 9As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that the scanning mechanism 2 includes a screw motor 21, a servo motor 23 and two symmetrically arranged limit rods 212, the screw motor 21 is installed inside the main body 11, the output end of the screw motor 21 is connected to a coaxially arranged transmission screw 211 through a coupling, the two limit rods 212 are fixedly connected to the inside of the main body 11, and a circular frame 22 is jointly sleeved on the outer circumference of the transmission screw 211 and the two limit rods 212, the inside of the circular frame 22 is fixedly connected with a circular rack 221, the bottom of the circular frame 22 is installed with a servo motor 23, and the output end of the servo motor 23 is connected to a coaxially arranged A rotating shaft 233 is provided, and a gear 234 is fixedly sleeved on the outer circumference of the rotating shaft 233, and the gear 234 is meshed with the round rack 221. A turntable 235 is fixedly connected to the top of the rotating shaft 233, and a second limit block 24 is movably sleeved on the outer circumference of the turntable 235. An ultrasonic three-dimensional scanning probe 242 is installed on one side of the second limit block 24. Through the arrangement of the servo motor 23, the ultrasonic three-dimensional scanning probe 242 and other structures, after the patient's upper limb is fully extended into the main body 11, the servo motor 23 and the screw motor 21 are turned on at the same time, so that the ultrasonic three-dimensional scanning probe 242 measures the upper limb's upper and lower circumference, accurately locates the patient's edema position, and improves the accuracy of its use.

[0026] like Figure 1 to Figure 9 As shown, two first limit blocks 231 are fixedly connected to the top of the screw motor 21, and the first limit blocks 231 are slidably assembled on the bottom of the circular frame 22. Two symmetrically arranged auxiliary balls 232 are rotatably installed inside the first limit blocks 231. The setting of the first limit blocks 231 allows the screw motor 21 to slide along the direction of the circular frame 22 when rotating, and the auxiliary balls 232 allow it to slide more smoothly.

[0027] like Figure 1 to Figure 9 As shown, a plurality of auxiliary rotating balls 236 evenly distributed around the circumference are installed for internal rotation of the turntable 235, and the second limit block 24 is slidably assembled inside the circular frame 22. Four symmetrically arranged auxiliary round balls 241 are installed for internal rotation of the second limit block 24. The auxiliary balls 232 ensure that the second limit block 24 is not affected by the rotation of the turntable 235 when sliding along the circular frame 22. The setting of the auxiliary round balls 241 makes the sliding of the second limit block 24 smoother.

[0028] In this embodiment, when the patient's upper limb is fully extended into the main body 11 for edema measurement, the screw motor 21 and the servo motor 23 are turned on at the same time. The turning on of the screw motor 21 causes the transmission screw 211 to rotate, and the rotation of the transmission screw 211 causes the circular frame 22 to rise. When the circular frame 22 rises, there are two limit rods 212 to limit it. During the rising period of the circular frame 22, the servo motor 23 is turned on. The servo motor 23 is turned on to cause the rotating shaft 233 to rotate. The rotation of the rotating shaft 233 causes the gear 234 to rotate. The gear 234 is meshed with the circular rack 221, so that the gear 234 moves around the circular rack 221. During the movement, the first limit block 231 on the servo motor 23 can effectively prevent the servo motor 23 from rotating itself, so that the servo motor 23 slides along the direction of the circular frame 22. The servo motor 2 During the sliding, an auxiliary ball 232 assists the sliding. During the sliding of the servo motor 23, the disc drives the second limit block 24 to slide. During the sliding of the second limit block 24, an auxiliary rotating ball 236 and a rotating disc 235 prevent it from following the rotation axis 233, so that it also slides along the direction of the circular frame 22. During the sliding, an auxiliary round ball 241 assists the sliding. During the sliding of the second limit block 24 along the circular frame 22, the ultrasonic three-dimensional scanning probe 242 is turned on to perform a three-dimensional scan of the patient's upper limbs, measure the overall size of the upper limbs, and thus form a three-dimensional model data to be sent to the control panel 33 for viewing. After the measurement of the swollen upper limb is completed, the patient also extends the other upper limb into the main body for comparative measurement, so as to more conveniently find the swollen position, accurately locate the swollen position of the patient, and improve the accuracy of its use.

[0029] Example 3 like Figure 1 to Figure 10 As shown, based on the same concept as the above-mentioned embodiment 1 and embodiment 2, this embodiment further proposes that the water circulation mechanism 3 includes a circulation frame 31, a one-way pump 311 and a water pump 321, the circulation frame 31 is fixedly connected to one side of the main body 11, the one-way pump 311 is installed inside the circulation frame 31, the output end and the input end of the one-way pump 311 are respectively installed with a main water outlet pipe 313 and a main water inlet pipe 312, one end of the main water inlet pipe 312 is fixedly connected to a plurality of array equidistantly distributed branch water inlet pipes 314, one end of the main water outlet pipe 313 is fixedly connected to There are several arrays of equally spaced branch water pipes 315, and a water pump 321 is installed at the bottom of the main water outlet pipe 313. Through the arrangement of the one-way pump 311, the branch water pipe 315 and other structures, when the patient's upper limb is extended for measurement, the one-way pump 311 is turned on, and the one-way pump 311 draws water into the branch water pipe 314, passes through the main water inlet pipe 312 and the main water outlet pipe 313, and is sent out from the branch water pipe 315, so that it completes the circulation inside the main body 11, and the patient's upper limb is flushed with water, thereby reducing the pain level of the patient's upper limb and improving the comfort of use.

[0030] like Figure 1 to Figure 10 As shown, a one-way valve 32 is installed at the bottom of the main water outlet pipe 313, and one end of the main water outlet pipe 313 is fixedly connected to a water inlet interface 322. A control panel 33 and an external cable 34 are respectively installed on one side of the circulation frame 31. The setting of the reverse valve can effectively prevent the liquid from flowing back, and the water inlet interface 322 is convenient for replenishing water inside the main body 11. The device can be powered and controlled by the setting of the control panel 33 and the external cable 34.

[0031] In this embodiment, when the patient's upper limb is placed in the main body 11 for measurement, the one-way pump 311 inside the circulation frame 31 is turned on, and the one-way pump 311 draws water into the water pipe 314, passes through the main water inlet pipe 312 and the main water outlet pipe 313, and is sent out from the branch water outlet pipe 315, so that it completes the circulation inside the main body 11. During the circulation, the branch water pipe 314 and the main water inlet pipe 312 are both provided with multiple strands. When participating in the circulation process, the water flow can completely cover the patient's upper limb, and the patient's upper limb is flushed with water circulation, thereby reducing the pain level of the patient's upper limb and improving the comfort of use. After use, the water inlet interface 322 and the water pump 321 can be used to inject liquid into the main body 11. After the liquid is injected, the one-way pump 311 is set to effectively prevent the liquid from flowing back. When the device is in use, the device can be powered and controlled through the control panel 33 and the external cable 34.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water circulation type upper limb edema measuring instrument, comprising a measuring mechanism (1), a scanning mechanism (2), a water circulation mechanism (3) and a main body (11), characterized in that: The measuring mechanism (1) is arranged on one side of the main body (11), the scanning mechanism (2) is arranged inside the main body (11), and the water circulation mechanism (3) is arranged on the other side of the main body (11); The measuring mechanism (1) comprises a measuring frame (13), a floating plate (14) and a top cover (12); the measuring frame (13) is fixedly connected to one side of the main body (11); the floating plate (14) is slidably mounted inside the measuring frame (13); a top column (143) is fixedly connected to the top of the floating plate (14); an inner groove column (147) is fixedly connected to the inside of the measuring frame (13); the top column (143) is slidably mounted inside the inner groove column (147); a spring (144) is commonly connected between the inner groove column (147) and the top column (143); a displacement sensor (146) is mounted on the top of the top column (143); the top cover (12) is slidably mounted on the top of the main body (11); and a leather cover (122) is arranged inside the top cover (12).

2. A water circulation upper limb edema measuring instrument according to claim 1, characterized in that: A second sealing gasket (123) is arranged on the outer peripheral surface of the top cover (12), a top connection block (111) is fixedly connected to the top of the main body (11), a first sealing gasket (112) is arranged on the inner wall of the top connection block (111), the first sealing gasket (112) and the second sealing gasket (123) are arranged alternately, two symmetrically arranged pull rings (121) are fixedly connected to the top of the top cover (12), a side marking line (131) is arranged on the main body (11), and a water inlet pipe (133) is commonly connected between the main body (11) and the measuring frame (13).

3. A water circulation upper limb edema measuring instrument according to claim 1, characterized in that: Dampers (145) are provided at both ends of the spring (144), two symmetrically arranged floating balls (141) are provided at the bottom of the floating plate (14), a sealing ring (142) is provided at the bottom of the floating plate (14), a first transparent observation plate (113) is fixedly connected to one side of the main body (11), a second transparent observation plate (132) is fixedly connected to one side of the measuring frame (13), and an air hole is provided at the top of the measuring frame (13).

4. A water circulation upper limb edema measuring instrument according to claim 1, characterized in that: The scanning mechanism (2) comprises a lead screw motor (21), a servo motor (23) and two symmetrically arranged limit rods (212); the lead screw motor (21) is installed inside the main body (11); the output end of the lead screw motor (21) is connected to a coaxially arranged transmission lead screw (211) via a coupling; the two limit rods (212) are fixedly connected inside the main body (11); a circular frame (22) is sleeved on the outer circumference of the transmission lead screw (211) and the two limit rods (212); a round rack (22) is fixedly connected inside the circular frame (22). 21), a servo motor (23) is installed at the bottom of the circular frame (22), the output end of the servo motor (23) is connected to a coaxially arranged rotating shaft (233) through a coupling, a gear (234) is fixedly sleeved on the outer circumference of the rotating shaft (233), the gear (234) is meshed with the round rack (221), a rotating disk (235) is fixedly connected to the top of the rotating shaft (233), a second limiting block (24) is movably sleeved on the outer circumference of the rotating disk (235), and an ultrasonic three-dimensional scanning probe (242) is installed on one side of the second limiting block (24).

5. A water circulation upper limb edema measuring instrument according to claim 4, characterized in that: Two first limit blocks (231) are fixedly connected to the top of the screw motor (21); the first limit blocks (231) are slidably mounted on the bottom of the round frame (22); and two symmetrically arranged auxiliary balls (232) are rotatably mounted inside the first limit blocks (231).

6. A water circulation upper limb edema measuring instrument according to claim 4, characterized in that: A plurality of auxiliary rotating beads (236) evenly distributed around the circumference are rotatably mounted inside the rotating disk (235), the second limiting block (24) is slidably mounted inside the circular frame (22), and four symmetrically arranged auxiliary round beads (241) are rotatably mounted inside the second limiting block (24).

7. The water circulation upper limb edema measuring instrument according to claim 1, characterized in that: The water circulation mechanism (3) comprises a circulation frame (31), a one-way pump (311) and a water pump (321); the circulation frame (31) is fixedly connected to one side of the main body (11); the one-way pump (311) is installed inside the circulation frame (31); the output end and the input end of the one-way pump (311) are respectively installed with a main water outlet pipe (313) and a main water inlet pipe (312); one end of the main water inlet pipe (312) is fixedly connected to a plurality of branch water inlet pipes (314) distributed in an array at equal intervals; one end of the main water outlet pipe (313) is fixedly connected to a plurality of branch water outlet pipes (315) distributed in an array at equal intervals; and the water pump (321) is installed at the bottom of the main water outlet pipe (313).

8. The water circulation upper limb edema measuring instrument according to claim 7, characterized in that: A one-way valve (32) is installed at the bottom of the main water outlet pipe (313), one end of the main water outlet pipe (313) is fixedly connected to a water inlet interface (322), and a control panel (33) and an external cable (34) are respectively installed on one side of the circulation frame (31).

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