A blood pressure measuring instrument with a rotating adjustable arm tube and a blood pressure measuring method

Abstract

The present invention discloses a blood pressure measuring instrument with a wheeled adjustable arm tube and a blood pressure measuring method, comprising: a base with a containing cavity, an adjustable arm tube arranged on the base, and a control unit and a power supply unit arranged in the base, wherein the control unit is electrically connected to the power supply unit; the adjustable arm tube comprises a shell, wherein a channel for placing an arm is arranged in the shell, wherein a variable diameter ring is arranged in the channel, wherein a bracket and a roller are arranged in sequence on the outer side of the variable diameter ring, wherein a toothed portion is arranged on the roller, wherein a gear transmission assembly is meshedly connected to the toothed portion, wherein the gear transmission assembly comprises a motor and a gear set, wherein a worm is connected to the output shaft of the motor, and wherein both ends of the gear set are meshedly connected to the toothed portions of the worm and the roller. The present invention is convenient to use and simple to operate, and since the variable diameter ring can be retracted to a certain state by a push plate, only a small amount of gas needs to be filled in the airbag, and the time spent is short, thereby avoiding the problem of a long test cycle caused by the prior art requiring the setting of double airbags to be inflated and deflated simultaneously to retract the adjustable arm tube.

Description

Technical Field

[0001] The present invention relates to the technical field of blood pressure measurement, in particular to a blood pressure measuring instrument with a rotary regulating arm tube and a blood pressure measuring method. Background Art

[0002] With the development of electronic technology, there are many electronic blood pressure measuring instruments on the market. Compared with traditional mercury column manual blood pressure measuring instruments, electronic blood pressure measuring instruments are much more convenient and have been widely used in medical treatment. Most of the existing automatic blood pressure measuring instruments are automatically contracted by double airbags. This method requires two sets of airbags to be inflated and deflated at the same time. It takes a long time for each person to test once. If multiple people need to be tested, they need to wait in line for a long time, which brings great inconvenience to people. Summary of the invention

[0003] In view of the above situation, it is necessary to provide a blood pressure measuring instrument with a rotary adjustable arm tube and a blood pressure measuring method to solve the problem that the existing dual-airbag automatic blood pressure measuring instrument takes a long time to test once.

[0004] To achieve the above-mentioned object, in a first aspect, the present invention provides a blood pressure measuring instrument with a rotating adjustable arm tube, comprising: a base having a receiving cavity, an adjustable arm tube arranged on the base, and a control unit and a power supply unit arranged in the base, wherein the control unit is electrically connected to the power supply unit;

[0005] The adjustable arm tube includes a shell, a channel for placing the arm is provided in the shell, a variable diameter ring is provided in the channel, an air bag is provided inside the variable diameter ring, the air bag is respectively connected to an air pump module, a solenoid valve and an air pressure sensor, the air pump module, the solenoid valve and the air pressure sensor are all electrically connected to the control unit, and a stethoscope head is also provided on the air bag, and the stethoscope head is connected to the control unit;

[0006] A bracket and a roller are sequentially arranged on the outside of the variable diameter ring, a plurality of vertical strip openings are arranged on the bracket, and the plurality of vertical strip openings are arranged around the variable diameter ring, and a first slider and a second slider are sequentially arranged on one side of the vertical strip opening close to the variable diameter ring, and one side of the first slider and one side of the second slider are slidably mounted on the vertical strip opening through a first bolt and a second bolt respectively, and the other side of the first slider and the other side of the second slider are connected with a push plate through a swing arm assembly respectively, and the push plate can be used to adjust the caliber size of the variable diameter ring through the swing arm assembly;

[0007] The drum is provided with a toothed portion, and a gear transmission assembly is meshedly connected to the toothed portion. The gear transmission assembly includes a motor and a gear set. A worm is connected to the output shaft of the motor, and two ends of the gear set are respectively meshedly connected to the worm and the toothed portion of the drum.

[0008] The drum is also provided with a plurality of first arc-shaped openings and a plurality of second arc-shaped openings. The first arc-shaped openings are clamped on the first bolt to drive the first slider to move in one direction along the vertical strip openings. The second arc-shaped openings are clamped on the second bolt to drive the second slider to move in the opposite direction of the first slider along the vertical strip openings.

[0009] Furthermore, the swing arm assembly includes a first swing rod and a second swing rod, one end of the first swing rod is connected to the first slider or the second slider, and the other end is connected to the push plate, and one end of the second swing rod is connected to the bracket, and the other end is connected to the first swing rod.

[0010] Furthermore, a first photoelectric sensor and a second photoelectric sensor are provided on the outside of the drum, and the drum is provided with a first opening and a second opening. The first photoelectric sensor is opposite to the first opening, and the second photoelectric sensor is staggered with the second opening. During the rotation of the drum, the first photoelectric sensor is staggered with the first opening, and the second photoelectric sensor may be opposite to the second opening.

[0011] Furthermore, the gear set includes a plurality of gears, which are meshed and connected in sequence, and are rotatably mounted on the housing through rotating shafts; an elastic member is connected to the rotating shaft of one group of gears in the gear set, a switch is provided on the housing, and the switch is connected to the elastic member.

[0012] Furthermore, a wrist placement plate is provided on the base, and the wrist placement plate is tiltedly arranged on the base near the outlet end side of the adjustment arm tube.

[0013] Furthermore, a backup battery is provided in the base, and the backup battery is electrically connected to the control unit.

[0014] Furthermore, a display panel and control buttons are provided on the base, and the display panel and the control buttons are electrically connected to the control unit respectively.

[0015] Furthermore, it also includes a voice module, which is electrically connected to the control unit.

[0016] In a second aspect, the present invention provides a method for measuring blood pressure, which is performed by using any one of the blood pressure measuring instruments with a rotating adjustable arm tube in the first aspect, comprising the following steps:

[0017] Step 1: Put your arm through the adjustable arm tube and place it on the wrist placement board, so that the upper arm is opposite to the stethoscope head, start the control button, and adjust the variable diameter circle to shrink;

[0018] Step 2: After the variable diameter ring is adjusted, start the blood pressure test and display the test results on the display panel;

[0019] Step 3: The variable diameter ring opens automatically, the arm is taken out, and the test is completed.

[0020] Further, in step 1, step 2, or step 3, when the power supply unit is powered off, the backup battery is started to work instead of the power supply unit.

[0021] Through the above technical solutions, the present invention has at least the following beneficial effects:

[0022] 1. The present invention can make the blood pressure measuring instrument achieve the effect of fast automatic contraction test by adjusting the setting of the arm tube. In the process of testing blood pressure, the motor rotates forward through the gear set to drive the roller to rotate forward. During the rotation of the roller, the first bolt and the second bolt respectively move oppositely along the first arc opening and the second arc opening on the vertical strip opening, thereby driving the first slider and the second slider through the swing arm assembly to make the push plate compress the variable diameter ring. When the test is completed, the motor reverses to drive the roller to rotate in the opposite direction, and the first bolt and the second bolt respectively move relative to each other along the first arc opening and the second arc opening on the vertical strip opening, driving the first slider and the second slider through the swing arm assembly to make the push plate move away from the variable diameter ring, so that the variable diameter ring expands back to its original position. The adjustable arm tube of the present invention can quickly contract the arm, thereby achieving the effect of fast testing;

[0023] 2. The present invention connects the worm and the motor to drive the gear set. Due to the self-locking characteristics of the worm, when the motor stops, the first slider and the second slider can be locked at a certain position, so that the push plate can keep the variable diameter ring in a compressed or relaxed state, and the motor can be locked as it stops, without the need to add a locking structure.

[0024] 3. The present invention is easy to use and simple to operate. Since the variable diameter ring can be retracted to a certain state by the push plate, only a small amount of gas needs to be filled in the airbag, and there is no need to spend a lot of waiting time for inflation. This avoids the problem of long test cycle caused by the existing technology on the market that requires setting up double airbags to be inflated and deflated at the same time to shrink the adjusting arm tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the internal structure of the first embodiment of the present invention;

[0026] Figure 2 is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention;

[0027] Figure 3 1 is a schematic diagram of the structure of a drum according to the first embodiment of the present invention;

[0028] Figure 4 1 is a schematic diagram of the structure of the adjusting arm tube according to the first embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the variable diameter ring explosion structure of the first embodiment of the present invention;

[0030] Figure 61 is a schematic diagram of the push plate structure of the first embodiment of the present invention;

[0031] Figure 7 1 is a schematic diagram of the structure of a gear transmission assembly according to Embodiment 1 of the present invention;

[0032] Figure 8 It is a schematic diagram of the structure of a control unit according to the first embodiment of the present invention.

[0033] 100, base; 110, control unit; 120, wrist placement board; 130, display panel; 140, control button; 200, housing; 210, channel; 300, variable diameter ring; 310, air bag; 311, air pump module; 312, solenoid valve; 400, bracket; 410, vertical strip opening; 411, first slider; 4111, first bolt; 412, second slider; 4121, second bolt; 500, roller; 510, Toothed portion; 520, first arc-shaped opening; 530, second arc-shaped opening; 510, first opening; 520, second opening; 600, swing arm assembly; 610, first swing rod; 620, second swing rod; 700, push plate; 800, toothed transmission assembly; 810, motor; 811, worm; 820, gear set; 821, gear; 822, rotating shaft; 823, elastic member; 900, first photoelectric sensor; 1000, second photoelectric sensor. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the following is a further detailed description of a blood pressure measuring instrument with a wheeled adjustable arm tube and a blood pressure measuring method of the present invention in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] Embodiment 1

[0036] Please refer to Figure 1-8 A blood pressure measuring instrument with a rotating adjustable arm tube comprises: a base 100 having a receiving cavity, an adjustable arm tube arranged on the base 100, and a control unit 110 and a power supply unit arranged in the base 100, wherein the control unit 110 is electrically connected to the power supply unit;

[0037] The adjustable arm tube includes a housing 200, a channel 210 for placing the arm is provided in the housing 200, a variable diameter ring 300 is provided in the channel 210, an air bag 310 is provided inside the variable diameter ring 300, the air bag 310 is respectively connected to an air pump module 311, a solenoid valve 312 and an air pressure sensor, the air pump module 311, the solenoid valve 312 and the air pressure sensor are all electrically connected to the control unit 110, and a stethoscope head is also provided on the air bag 310, and the stethoscope head is connected to the control unit 110;

[0038] A bracket 400 and a roller 500 are sequentially arranged on the outside of the variable diameter ring 300, and a plurality of vertical strip openings 410 are arranged on the bracket 400. The plurality of vertical strip openings 410 are arranged around the variable diameter ring 300. A first slider 411 and a second slider 412 are sequentially arranged at the vertical strip opening 410 near one side of the variable diameter ring 300. One side of the first slider 411 and one side of the second slider 412 are slidably mounted on the vertical strip opening 410 through a first bolt 4111 and a second bolt 4121, respectively. The other side of the first slider 411 and the other side of the second slider 412 are connected to a push plate 700 through a swing arm assembly 600, respectively. The push plate 700 can be used to adjust the caliber of the variable diameter ring 300 through the swing arm assembly 600.

[0039] The drum 500 is provided with a toothed portion 510, and the toothed portion 510 is meshedly connected with a gear transmission assembly 800, which includes a motor 810 and a gear set 820. A worm 811 is connected to the output shaft of the motor 810, and two ends of the gear set 820 are respectively meshedly connected with the worm 811 and the toothed portion 510 of the drum 500;

[0040] The drum 500 is also provided with a plurality of first arc openings 520 and a plurality of second arc openings 530. The first arc openings 520 are clamped on the first bolt 4111 to drive the first slider 411 to move in one direction along the vertical strip 410 opening, and the second arc openings 530 are clamped on the second bolt 4121 to drive the second slider 512 to move in the opposite direction of the first slider 411 along the vertical strip opening 410. Preferably, the vertical strip opening 410, the first slider 411, the second slider 4121, the swing arm assembly 600 and the push plate 700 are respectively provided with three groups, and the three groups of push plates 700 are equidistantly arranged around the variable diameter ring 300, so that the variable diameter ring 300 is subjected to uniform force during the contraction process, and the contraction process is more stable.

[0041] When testing blood pressure, the variable diameter ring 300 contracts, and the control unit 110 controls the motor 810 to rotate forward to drive the worm 811 to rotate forward, and the worm 811 drives the roller 500 to rotate forward through the gear set 820. During the rotation of the roller 500, the first bolt 4111 and the second bolt 4121 move oppositely on the vertical strip opening 410 along the first arc opening 520 and the second arc opening 530, respectively, thereby driving the first slider 411 and the second slider 412 to compress the variable diameter ring 300 through the swing arm assembly 600.

[0042] The airbag 310 in the variable diameter ring 300 is pressed against the arm. At this time, the air pressure sensor in the airbag 310 is under pressure and transmits information back to the control unit 110. The control unit 110 controls the motor 810 to stop rotating and controls the air pump module 311 to inflate the airbag 310. When the inflation reaches the set value of the air pressure sensor, the control unit 110 controls the air pump module 3.11 to stop working. At this time, the stethoscope head is close to the tester's arm and the blood pressure test begins.

[0043] After the blood pressure test is completed, the control unit 110 automatically controls the solenoid valve 312 to deflate the airbag 310, and controls the motor 810 to rotate in the opposite direction, so that the first bolt 4111 and the second bolt 4121 move relatively on the vertical strip opening 410 along the first arc opening 520 and the second arc opening 530 respectively, and drives the first slider 411 and the second slider 412 to move the push plate 700 away from the variable diameter ring 300 through the swing arm assembly 600, so that the variable diameter ring 300 is relaxed. The present invention is easy to use and simple to operate. Since the variable diameter ring 300 can be contracted to a certain state through the push plate 700, only a small amount of gas needs to be filled in the airbag 310, and there is no need to spend a lot of waiting time for filling. It avoids the problem of long test cycle caused by setting double airbags to be charged and deflated at the same time to contract the adjusting arm tube in the existing technology on the market, which brings great convenience to people.

[0044] It can be understood that due to the self-locking characteristics of the worm 811, when the motor 810 stops, the first slider 411 and the second slider 412 can be locked in a certain position, so that the push plate 700 maintains a compressed or relaxed state with the variable diameter ring 300, and locks as it stops, without the need for an additional locking structure.

[0045] Please refer to Figure 6 In this embodiment, the swing arm assembly 600 includes a first swing arm 610 and a second swing arm 620. One end of the first swing arm 910 is connected to the first slider 411 or the second slider 412, and the other end is connected to the push plate 700. One end of the second swing arm 620 is connected to the bracket 400, and the other end is connected to the first swing arm 610. Specifically, the length of the first swing arm 610 is greater than that of the second swing arm 620. During the contraction of the variable diameter ring 300, the angle between the first swing arm 610 and the push plate 700 gradually increases, and the angle between the second swing arm 620 and the bracket 400 also gradually increases. During the expansion process, the opposite is true. The active connection between the second swing arm 620 and the first swing arm 610 can make the first swing arm 610 more stable during movement, and the second swing arm 620 can play a supporting role.

[0046] Please refer to Figure 1 and Figure 7In this embodiment, the first photoelectric sensor 900 and the second photoelectric sensor 1000 are disposed on the outer side of the drum 500, and the drum 500 is provided with a first opening 540 and a second opening 550. The first photoelectric sensor 900 is opposite to the first opening 540, and the second photoelectric sensor 1000 is staggered from the second opening 550. During the rotation of the drum 500, the first photoelectric sensor 900 is staggered from the first opening 540, and the second photoelectric sensor 1000 can be opposite to the second opening 550. When the blood pressure test is completed, the motor 810 is reversed until the first photoelectric sensor 900 is opposite to the first opening 540 again. At this time, the first photoelectric sensor 900 returns information to the control unit 110 to control the motor 810 to stop rotating, so that the variable diameter ring 300 is dilated and returns to the initial position.

[0047] Furthermore, when the product is accidentally touched, the motor 810 will rotate to drive the variable diameter ring 300 to contract. Since the inside of the variable diameter ring 300 is empty, the air pressure sensor on the airbag 310 cannot be subjected to pressure, and the motor 810 will not stop. The first bolt 4111 and the second bolt 4121 will slide to the end of the first arc opening 520 or the second arc opening 530 and continue to compress the first arc opening 520 or the first arc opening 530, causing wear on the roller 500. To avoid this situation, when the second photoelectric sensor 1000 is opposite to the second opening 550, this is the maximum compression limit of the variable diameter ring 300. The second photoelectric sensor 1000 will return information to the control unit 110 to control the motor 810 to reverse, so that the variable diameter ring 300 returns to its original position.

[0048] Please refer to Figure 7 In this embodiment, the gear set 820 includes a plurality of gears 821, which are meshed and connected in sequence, and are rotatably mounted on the housing 200 through the rotating shaft 822; an elastic member 823 is connected to the rotating shaft 822 of one set of gears 821 of the gear set 820, and a switch is provided on the housing 200, and the switch is connected to the elastic member 823. When the first photoelectric sensor 900 and the second photoelectric sensor 1000 fail or other faults occur, the switch can be pressed, and at this time, one set of gears 821 is staggered with the gears 821 on both sides, and the motor 810 is idle. If during the test, since the worm 811 does not lock the drum 500 at this time, the arm only needs to struggle to loosen and withdraw from the variable diameter ring 300, which greatly enhances the safety and security of the product. Preferably, four groups of gears 821 are provided, the elastic member 823 is provided on the second group of gears 821, the first group of gears 821 is meshedly connected with the worm 811, the two ends of the third group of gears 821 are respectively meshed with the second group of gears 821 and the fourth group of gears 821, and the fourth group of gears 821 is meshedly connected with the toothed portion 510 of the drum 500.

[0049] Please refer to Figure 2 In this embodiment, a wrist rest plate 120 is also provided on the base 100. The wrist rest plate 120 is tiltedly arranged on the base 100 near the outlet end of the adjustment arm tube so that the arm can exert force and improve the comfort of the test process.

[0050] In this embodiment, a backup battery is also provided in the base 100, and the backup battery is electrically connected to the control unit 110. When the power supply unit is powered off, the backup battery will be activated to replace the power supply unit to work, so that the test can continue, and at the same time, the tester's arm can be prevented from being pressed due to the test interruption, which greatly improves the safety performance of the device.

[0051] Please refer to Figure 2 In this embodiment, a display panel 130 and a control button 140 are provided on the base 100, and the display panel 130 and the control button 140 are respectively electrically connected to the control unit 110. The control button 140 can control the working state of the device, and the blood pressure test result can be displayed on the display panel 130 for the user to view.

[0052] In this embodiment, a voice module is also included, which is electrically connected to the control unit 110. Specifically, considering that some elderly people have poor eyesight or low education level, the voice module can enable the test results to be read by the user through voice broadcast, and the blood pressure test results can be obtained without checking the information on the display panel.

[0053] In summary, the working principle of this embodiment is as follows:

[0054] During the test, the control button 140 is started, and the control unit 110 drives the worm 811 to rotate forward by controlling the motor 810 to rotate forward, and the worm 811 drives the roller 500 to rotate forward through the gear set 820. During the rotation of the roller 500, the first bolt 4111 and the second bolt 4121 move oppositely on the vertical strip opening 410 along the first arc opening 520 and the second arc opening 530, respectively, so that the angle between the swing arm assembly 600 and the push plate 700 increases, and the push plate 700 moves toward the direction of the variable diameter ring 300 and compresses it.

[0055] The airbag 310 in the variable diameter ring 300 presses on the arm. At this time, the air pressure sensor in the airbag will be under pressure and transmit information back to the control unit. The control unit controls the motor 810 to stop rotating and controls the air pump module 311 to inflate the airbag 310. When the inflation reaches the set value of the air pressure sensor, the control unit 110 controls the air pump module 311 to stop working. At this time, the stethoscope head is close to the tester's arm and the blood pressure test begins.

[0056] After the blood pressure test is completed, the test result will be displayed on the display panel 130, and the voice module will broadcast the test result. The control unit 110 automatically controls the solenoid valve 312 to deflate the airbag 310, and at the same time controls the motor 810 to rotate in the opposite direction, so that the first bolt 4111 and the second bolt 4121 move relative to each other on the vertical strip opening 410 along the first arc opening 520 and the second arc opening 530 respectively, so that the angle between the swing arm assembly 600 and the push plate 700 is reduced, and the push plate 700 moves away from the variable diameter ring 300, so that the variable diameter ring 300 is dilated. When the first photoelectric sensor 900 is opposite to the first opening 540 again, the first photoelectric sensor 900 returns information to the control unit 110 to control the motor 810 to stop rotating, and the variable diameter ring 300 is dilated and returns to the initial position, and the test is completed.

[0057] Embodiment 2

[0058] A blood pressure measurement method, using any one of the blood pressure measuring instruments with a rotating adjustable arm tube in the first embodiment to measure, comprises the following steps:

[0059] Step 1: Put the arm through the adjustable arm tube and place it on the wrist placement board 120, so that the upper arm is opposite to the stethoscope head, and start the control button 140 to adjust and contract the variable diameter ring 300;

[0060] Step 2: After the variable diameter ring 300 is adjusted, the blood pressure test is started, and the test result is displayed on the display panel 130;

[0061] Step 3: The variable diameter ring 300 opens automatically, the arm is taken out, and the test is completed.

[0062] It can be seen from the above test steps that the present invention is easy to use and can be quickly learned by the elderly, making it very suitable for the promotion and application of blood pressure measurement.

[0063] In this embodiment, in step one, step two, or step three, when the power supply unit is powered off, the backup battery starts up and takes over the power supply unit to allow the test operation to continue. At the same time, the test interruption that causes the tester's arm to be squeezed is avoided, making the equipment safer to use.

[0064] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0065] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A blood pressure measuring instrument with a rotary adjustable arm tube, characterized in that: include: A base (100) having a receiving cavity, an adjusting arm tube arranged on the base (100), and a control unit (110) and a power supply unit arranged in the base (100), wherein the control unit (110) is electrically connected to the power supply unit; The adjustable arm tube comprises a shell (200), wherein a channel (210) is provided in the shell (200) for placing an arm, wherein a variable diameter ring (300) is provided in the channel (210), wherein an air bag (310) is provided inside the variable diameter ring (300), wherein the air bag (310) is respectively connected to an air pump module (311), an electromagnetic valve (312) and an air pressure sensor, wherein the air pump module (311), the electromagnetic valve (312) and the air pressure sensor are all electrically connected to the control unit (110), and wherein a stethoscope head is further provided on the air bag (310), wherein the stethoscope head is connected to the control unit (110); A bracket (400) and a roller (500) are sequentially arranged on the outside of the variable diameter ring (300); a plurality of vertical strip openings (410) are arranged on the bracket (400); the plurality of vertical strip openings (410) are arranged around the variable diameter ring (300); a first slider (411) and a second slider (412) are sequentially arranged on one side of the vertical strip opening (410) close to the variable diameter ring (300); one side of the first slider (411) and one side of the second slider (412) are slidably mounted on the vertical strip opening (410) via a first bolt (4111) and a second bolt (4121), respectively; the other side of the first slider (411) and the other side of the second slider (412) are connected to a push plate (700) via a swing arm assembly (600); the push plate (700) can be used to adjust the caliber of the variable diameter ring (300) via the swing arm assembly (600); The roller (500) is provided with a toothed portion (510), the toothed portion (510) is meshingly connected with a gear transmission assembly (800), the gear transmission assembly (800) comprises a motor (810) and a gear set (820), the output shaft of the motor (810) is connected with a worm (811), and two ends of the gear set (820) are respectively meshingly connected with the worm (811) and the toothed portion (510) of the roller (500); The drum (500) is further provided with a plurality of first arc-shaped openings (520) and a plurality of second arc-shaped openings (530); the first arc-shaped openings (520) are clamped on the first bolt (4111) and are used to drive the first slider (411) to move in one direction along the vertical strip-shaped opening (410); and the second arc-shaped openings (530) are clamped on the second bolt (4121) and are used to drive the second slider (412) to move in a direction opposite to the first slider (411) along the vertical strip-shaped opening (410).

2. A blood pressure measuring instrument with a rotary adjustable arm tube according to claim 1, characterized in that: The swing arm assembly (600) comprises a first swing rod (610) and a second swing rod (620); one end of the first swing rod (610) is connected to the first slider (411) or the second slider (412), and the other end is connected to the push plate (700); one end of the second swing rod (620) is connected to the bracket (400), and the other end is connected to the first swing rod (610).

3. A blood pressure measuring instrument with a rotary adjustment arm tube according to claim 1, characterized in that: A first photoelectric sensor (900) and a second photoelectric sensor (1000) are provided on the outside of the drum (500); the drum (500) is provided with a first opening (540) and a second opening (550); the first photoelectric sensor (900) is opposite to the first opening (540), and the second photoelectric sensor (1000) is staggered from the second opening (550); during the rotation of the drum (500), the first photoelectric sensor (900) is staggered from the first opening (540), and the second photoelectric sensor (1000) can be opposite to the second opening (550).

4. The blood pressure measuring instrument with a rotary adjustment arm tube according to claim 1, wherein the gear set (820) comprises a plurality of gears (821), the plurality of gears (821) are meshed and connected in sequence, and the plurality of gears (821) are rotatably mounted on the housing (200) via rotating shafts (822); An elastic member (823) is connected to the rotating shaft (822) of one set of gears (821) of the gear set (820), and a switch is provided on the housing (200), and the switch is connected to the elastic member (823).

5. A blood pressure measuring instrument with a rotary adjustment arm tube according to claim 1, characterized in that: A wrist placement plate (120) is also provided on the base (100), and the wrist placement plate (120) is tiltedly arranged on the base (100) near the outlet end of the adjustment arm tube.

6. A blood pressure measuring instrument with a rotary adjustable arm tube according to claim 1, characterized in that: A backup battery is also provided in the base (100), and the backup battery is electrically connected to the control unit (110).

7. A blood pressure measuring instrument with a rotary adjustable arm tube according to claim 1, characterized in that: The base (100) is provided with a display panel (130) and a control button (140), and the display panel (130) and the control button (140) are respectively electrically connected to the control unit (110).

8. A blood pressure measuring instrument with a rotary adjustable arm tube according to claim 1, characterized in that: It also comprises a voice module, which is electrically connected to the control unit (110).

9. A blood pressure measurement method, characterized in that: Measuring by using a blood pressure measuring instrument with a rotating adjustable arm tube according to any one of claims 1 to 8, comprising the following steps: Step 1: passing the arm through the adjustable arm tube and placing it on the wrist placement plate (120), with the upper arm facing the stethoscope head, and activating the control button (140) to adjust and contract the variable diameter ring (300); Step 2: After the variable diameter ring (300) is adjusted, the blood pressure test is started, and the test result is displayed on the display panel (130); Step 3: The variable diameter ring (300) automatically opens, the arm is taken out, and the test is completed.

10. A blood pressure measurement method according to claim 9, characterized in that: In the step 1, the step 2, or the step 3, when the power supply unit is powered off, the backup battery is started to work instead of the power supply unit.

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