TWI616216B - Constant pressure automatic adjustment system for human body - Google Patents

Abstract

A constant pressure automatic adjustment system suitable for human body, which is used for connecting with a human body tissue, and comprises a container for accommodating a liquid, a connecting line for connecting between the human body tissue and the container, and a a switching device connected to the connecting pipe and interposed between the first end and the second end, a hydraulic sensing device disposed on the switching device for sensing a liquid pressure of the human body, and a container disposed on the container And a liquid level sensing device for sensing a liquid level of the liquid in the container, and a control module electrically connected to the switching device, the hydraulic sensing device and the liquid level sensing device, the connecting pipeline has a first end portion for communicating with the body tissue, and a second end portion communicating with the container, the switching device communicating the first end portion with the hydraulic pressure when the switching device is in a first switching state The sensing device does not communicate with the first and second ends, and the hydraulic sensing device senses the liquid pressure of the human body tissue. When the switching device is in a second switching state, the switching device communicates with the first and second End but not connected to the first The hydraulic portion of the sensing device, the control module changes the numerical value of the measured hydraulic fluid pressure based on the sensing device and the liquid level sensing means sensing the liquid level, control switching of the switching means.

Description

Constant pressure automatic adjustment system for human body

The invention relates to a pressure regulating system, in particular to a constant pressure automatic regulating system suitable for human body.

Nowadays, when a hospital encounters a patient's shock, the standard treatment method is to measure the central venous pressure by a medical staff through a central catheter placed in the inferior vena cava. At this time, if the central venous pressure is less than the target value, then After a certain amount of a solution such as physiological saline is administered through a central catheter of the inferior vena cava, the central venous pressure is measured again. If the central venous pressure is still less than the target value, the center is again administered after a certain amount of the physiological saline solution or the like is administered again. Venous pressure, thus, the total amount of the solution such as physiological saline solution whose central venous pressure is greater than the target value or administered has reached a target amount. However, this artificial treatment method needs to be performed by a special person, and the person needs to continue. Surveillance and recording by the patient often takes an hour to complete the treatment. However, there are many medical staff in the hospital today, and the medical staff often needs to go halfway through the process of giving the patient physiological saline. Leaving to deal with other matters, if an oversight is often caused There is a danger of overdose, so this artificial treatment is not only time-consuming and laborious, but also prone to errors in a crisis.

In addition, when the hospital suffers from an increase in intracranial pressure caused by a traumatic brain injury, stroke or brain tumor, etc., one of the current standard treatment methods is to drain the brain through a drainage catheter placed outside the ventricle. Spinal fluid to the body to reduce intracranial pressure by measuring the intracranial pressure of the patient per hour through a drainage catheter placed outside the ventricle. If the intracranial pressure is greater than the target value, perform 3 to 5 per drainage. The drainage of the cerebrospinal fluid in milliliters is repeated until the intracranial pressure drops to the target value or the drainage volume within one hour has reached the target value of 10 to 15 ml. This artificial treatment also needs to be continued by a person. Surveillance and recording is performed next to the patient to avoid the risk of excessive drainage. However, this treatment takes more than 10 minutes per hour and requires several days of continuous execution to complete the entire treatment, so it is not only extremely time consuming. Moreover, in the case of insufficient medical manpower, the risk of excessive drainage is still not completely avoided.

Accordingly, it is an object of the present invention to provide a constant pressure automatic adjustment system suitable for a human body that automatically monitors pressure and reduces medical risks.

Therefore, the present invention is applicable to a constant pressure automatic adjustment system of a human body for connecting with a human body tissue, and the human tissue can generate a liquid pressure, and the constant pressure is automatically adjusted. The system includes a container, a connecting line, a switching device, a hydraulic sensing device, a liquid level sensing device, and a control module.

The container is used to hold a liquid.

The connecting conduit is for connecting between the body tissue and the container, the connecting conduit having a first end for communicating with the body tissue and a second end for communicating with the container.

The switching device is connected to the connecting pipeline and is interposed between the first and second ends, and the switching device switches between a first switching state and a second switching state.

The hydraulic sensing device is disposed on the switching device, the hydraulic sensing device is configured to sense a liquid pressure of the human body tissue, and when the switching device is in the first switching state, the switching device communicates with the first end portion and the The hydraulic sensing device does not communicate with the first and second ends, and the hydraulic sensing device senses the liquid pressure of the human body tissue. When the switching device is in the second switching state, the switching device communicates with the first The two ends are not connected to the first end and the hydraulic sensing device.

The liquid level sensing device is disposed in the container, and the liquid level sensing device is configured to sense a liquid level of the liquid in the container.

The control module is electrically connected to the switching device, the hydraulic sensing device and the liquid level sensing device, and the control module senses the liquid pressure according to the hydraulic sensing device The value of the force and the change in the value of the liquid level sensed by the liquid level sensing device control the switching of the switching device.

The function of the invention is to use the control module to determine the value of the liquid pressure sensed by the hydraulic sensing device and the numerical value of the liquid level sensed by the liquid level sensing device, to automatically control the switching of the switching device. a state in which a predetermined volume of liquid is introduced into the body tissue or discharged to the outside of the body tissue, and the fluid pressure of the body tissue is maintained in a normal range, whereby the present invention can automatically and accurately complete the course of treating the patient And automatically complete the record to reduce the workload of first-line medical staff and reduce the risk of medical errors.

100‧‧‧ Constant pressure automatic adjustment system

62‧‧‧ Analog/Digital Signal Converter

200‧‧‧Human body tissue

63‧‧‧Digital Signal Processor

300‧‧‧Liquid

70‧‧‧ storage module

310‧‧‧ physiological saline bag

80‧‧‧ display

400‧‧‧Human body tissue

90‧‧‧Mobile devices

410‧‧‧Liquid

420‧‧‧storage bag

10‧‧‧ Container

20‧‧‧Connecting pipe

21‧‧‧ first end

22‧‧‧ second end

30‧‧‧Switching device

31‧‧‧Three-way valve

311‧‧‧ first interface

312‧‧‧second interface

313‧‧‧ third interface

32‧‧‧Stepper motor

40‧‧‧Hydraulic sensing device

50‧‧‧ Liquid level sensing device

60‧‧‧Control Module

61‧‧‧Amplifier

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a first embodiment of a constant pressure automatic adjustment system for human body connected to a human body tissue of the present invention. 2 is a schematic diagram of the control flow of the first embodiment; FIG. 3 is a view similar to FIG. 1 illustrating the first embodiment for inputting a liquid from a container into the body tissue; FIG. 4 is A schematic diagram of a system configuration of a second embodiment of a constant pressure automatic adjustment system for a human body connected to a human body tissue; Figure 5 is a schematic view showing the control flow of the second embodiment; and Figure 6 is a view similar to Figure 4 illustrating the second embodiment discharging a liquid of the body tissue into a container.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 1 and 2, a first embodiment of a constant pressure automatic adjustment system 100 suitable for use in a human body, the constant pressure automatic adjustment system 100 is used to connect with a human body tissue 200, which can generate a fluid pressure. In the present embodiment, the human body tissue 200 is the inferior vena cava in the human body, which is represented by a representative of the inferior vena cava in the chest in FIG. 1. The fluid pressure generated by the human body tissue 200 refers to the inferior vena cava. Central venous pressure. The constant pressure automatic adjustment system 100 includes: a container 10, a connecting line 20, a switching device 30, a hydraulic sensing device 40, a liquid level sensing device 50, a control module 60, a storage module 70, A display 80, and a mobile device 90.

The container 10 is used to house a liquid 300. In the present embodiment, the liquid 300 is a physiological saline solution and is temporarily stored in the container 10 by a physiological saline bag 310 disposed above the container 10, but is not limited thereto.

The connecting line 20 is connected between the human body tissue 200 and the container 10, the connecting line 20 has a first end portion 21 for communicating with the human body tissue 200, and a communicating with the container 10 Second end portion 22.

The switching device 30 is connected to the connecting line 20 and interposed between the first and second ends 21 and 22. The switching device 30 switches between a first switching state and a second switching state. In the present embodiment, the switching device 30 has a three-way valve 31 connected to the connecting line 20, and a stepping motor 32 electrically connected to the control module 60 for driving the three-way valve 31. The three-way valve 31 has a first interface 311, a second interface 312, and a third interface 313. The stepping motor 32 drives the three-way valve 31 to switch between the first switching state and the second switching state. In the first state, the first interface 311 is in communication with the second interface 312, but is not in communication with the third interface 313. In the second state, the first interface 311 is connected to the third interface 313. However, it is not connected to the second interface 312. It can be understood that the switching device 30 is not limited thereto.

The hydraulic sensing device 40 is disposed at a second interface 312 of the three-way valve 31 of the switching device 30 for sensing the liquid pressure of the human tissue 200, the hydraulic sensing device 40 and the control The module 60 is electrically connected. When the three-way valve 31 of the switching device 30 is in the first switching state, the three-way valve 31 of the switching device 30 communicates with the first end portion 21 and the hydraulic sensing device 40 but does not communicate with the first and second ends. The portions 21, 22, such that the human body tissue 200 and the hydraulic sensing device 40 can form a Closed circuit, the hydraulic sensing device 40 can sense the liquid pressure of the human body tissue 200 in a closed loop state; when the three-way valve 31 of the switching device 30 is in the second switching state, the switching device 30 The three-way valve 31 communicates with the first and second end portions 21, 22 but does not communicate with the first end portion 21 and the hydraulic sensing device 40. At this time, the hydraulic sensing device 40 cannot sense the human body tissue 200. Liquid pressure.

In the present embodiment, the hydraulic sensing device 40 can be sold by the "ICU" Transpac IV Monitoring Kit manufactured by ICU Medical, Inc., and the hydraulic sensing is performed. The device 40 can convert the sensed liquid pressure of the human body tissue 200 into a voltage signal for the control module 60 to interpret, but is not limited thereto.

The liquid level sensing device 50 is disposed in the container 10 , and the liquid level sensing device 50 is configured to sense the liquid level of the liquid 300 in the container 10 , and the position sensing device 50 is electrically connected to the control module 60 .

In the present embodiment, the liquid level sensing device 50 is a resistive liquid level sensor disposed inside the container 10, for example, a liquid level detecting belt (JLS) manufactured by Jiude Electronics Co., Ltd. Series), the height of the liquid level can be expressed by a change in the resistance value, wherein the magnitude of the resistance output value is inversely proportional to the liquid level height, so that when the liquid level of the liquid 300 in the container 10 changes (for example, Or increasing, the control module 60 can know according to the change of the output resistance value of the bit sensing device 50. The amount of liquid reduction or increase (ml) represented by the change in the liquid level of the liquid 300 is not limited thereto.

The control module 60 is electrically connected to the stepping motor 32 of the switching device 30, the hydraulic sensing device 40, the liquid level sensing device 50, the storage module 70 and the display 80. The control module 60 can be The value of the liquid pressure sensed by the hydraulic sensing device 40 and the numerical value of the liquid level sensed by the liquid level sensing device 50 control the switching of the three-way valve 31 of the switching device 30.

In this embodiment, the control module 60 can determine whether the value of the liquid pressure (central venous pressure) sensed by the hydraulic sensing device 40 is not greater than a first set value (eg, 8-12 cm H ₂ O). The control module 60 can determine whether the decrease value of the liquid level sensed by the liquid level sensing device 50 is equal to a second set value (for example, 250 ml), wherein the decrease value of the liquid level is defined at a predetermined execution time ( For example, if the value is reduced within 20 min), the control module 60 can determine whether the cumulative total amount of the liquid 300 drained from the container 10 into the body tissue 200 is less than a third set value (eg, 500 ml), and It is understood that the control module 60 can have an amplifier 61 (AMP), an analog/digital converter 62 (A/D) electrically coupled to the amplifier 61, and an analog/digital converter 62. The connected digital signal processor 63 (DSP) processes the received signal, but is not limited thereto.

The storage module 70 is electrically connected to the control module 60. In this embodiment, the storage module 70 can store setting values required for system operation (for example, the first, second, The three set values and the predetermined execution time), the liquid pressure value sensed by the hydraulic sensing device 40 and the liquid level value sensed by the liquid level sensing device 50.

The display 80 is electrically coupled to the control module 60. In this embodiment, the display 80 can display the signal transmitted by the control module 60 for viewing by the medical staff.

The mobile device 90 communicates with the control module 60 in a wireless and wired manner, the mobile device 90 being used by a medical professional. In this embodiment, the mobile device 90 communicates with the control module 60 in a wireless manner (for example, Bluetooth), and the mobile device 90 is a smart phone or a tablet.

As shown in FIGS. 2 and 3, when the central venous pressure of the patient is monitored by the present embodiment, the container 10 is preloaded with a certain volume (for example, 500 ml) of the liquid 300, and the first end of the tube 20 is first loaded. The portion 21 is in communication with the human body tissue 200. The three-way valve 31 of the switching device 30 is initially in the first switching state. Thus, the control module 60 first determines the human body sensed by the hydraulic sensing device 40. Whether the value of the fluid pressure (i.e., central venous pressure) of the tissue 200 is not greater than the first set value.

When the control module 60 determines that the value of the liquid pressure sensed by the hydraulic sensing device 40 is not greater than the first set value, that is, the central venous pressure of the patient is too low, and the patient is in a shock state. The control module 60 performs the following control flow:

The control module 60 controls the three-way valve 31 of the switching device 30 to switch from the first switching state to the second switching state, and the liquid 300 is drained from the container 10 to the human body tissue 200 by gravity drainage. In addition, it can be understood that if it is to protect In the case of a safety check, if the medical staff determines that the value of the liquid pressure sensed by the hydraulic sensing device 40 is not greater than the first set value, the control module The group 60 can also transmit a notification signal to the mobile device 90. The medical staff can operate the mobile device 90 to transmit a control signal to the control module 60 according to the current condition of the patient. The control module 60 can further control the control module 60 according to the control. The signal determines whether to control the three-way valve 31 of the switching device 30 to switch from the first switching state to the second switching state.

At this time, if the control module 60 determines that the decrease value of the liquid level sensed by the liquid level sensing device 50 within the predetermined execution time is equal to the second set value, that is, within the predetermined execution time, The liquid 300 inputs the capacity of the second set value from the container 10 to the patient, and the control module 60 controls the three-way valve 31 of the switching device 30 to switch to the first switching state again; then, if the control The module 60 determines that the cumulative total amount of the liquid 300 drained from the container 10 into the body tissue 200 is less than the third set value, that is, the total amount of the liquid 300 input from the container 10 into the patient's body has not exceeded The upper limit of the medical safety, the control module 60 determines again whether the value of the liquid pressure sensed by the hydraulic sensing device 40 is not greater than the first set value, but if the control module 60 determines from the container 10 The cumulative total amount of the liquid 300 drained into the body tissue 200 is not less than the third set value, that is, the total amount of the liquid 300 input from the container 10 into the patient's body has exceeded the medical safety limit. Then the control module 60 transmits an alarm. Numbers to the display 80, and transmits an alarm signal to the mobile device 90, The medical staff who see the alarm signal on the display 80 or the mobile device 90 can quickly check the condition of the patient and decide on the medical treatment to be taken later.

Conversely, if the control module 60 determines that the decrease value of the liquid level sensed by the liquid level sensing device 50 within the predetermined execution time is not equal to the second set value, that is, during the predetermined execution time, The liquid 300 is not input from the container 10 into the patient of the second set value, and the control module 60 controls the three-way valve 31 of the switching device 30 to remain in the second switching state until the control mode The group 60 determines that the reduction value of the liquid level sensed by the liquid level sensing device 50 has been equal to the second set value, that is, ensures that the liquid 300 can be input from the container 10 to the capacity of the second set value to the patient. In the body, achieve medical results.

In addition, when the control module 60 determines that the value of the liquid pressure sensed by the hydraulic sensing device 40 is greater than the first set value, that is, the central venous pressure of the patient is normal, the control module 60 transmits the The value of the liquid pressure is displayed on the display 80 for viewing by the medical staff in the patrol room.

Through the above description, the advantages of the present invention can be further summarized as follows:

The control module 60 uses the control module 60 to determine the value of the liquid pressure sensed by the hydraulic sensing device 40 and the numerical value of the liquid level sensed by the liquid level sensing device 50, thereby automatically controlling the switching device 30. The switching state of the three-way valve 31 is to automatically input a predetermined volume of liquid 300 (for example, physiological saline) into the body of the patient to maintain the central venous pressure of the patient in a normal range, so that the present invention can automatically and accurately The treatment of the entire treatment is completed, and the recording is automatically completed. In other words, the invention not only can effectively reduce the workload of the first-line medical staff, but also reduce the risk of medical errors and improve the medical safety of the patient.

In addition, it can be understood that the embodiment can also cancel the application of the mobile device 90 without requiring a medical staff to perform a double check.

Referring to Figures 4, 5 and 6, a second embodiment of the present invention is similar to the first embodiment. The second embodiment is identical to the system configuration of the first embodiment. Without repeating the description, the difference between the second embodiment and the first embodiment is that:

In the present embodiment, the constant pressure automatic adjustment system 100 is used to connect with a human body tissue 400, which is the ventricle of the human head. The fluid pressure generated in the human tissue 400 refers to the ventricle in the ventricle. The intracranial pressure (ICP) produced by the liquid 410, which is the cerebrospinal fluid in the ventricles. In addition, a storage bag 420 is disposed at the bottom of the container 10, and the storage bag 420 can collect the liquid 410 drained into the container 10, but is not limited thereto.

As shown in FIGS. 5 and 6, when the intracranial pressure of the patient is monitored by the present embodiment, the first end portion 21 of the tube 20 is in communication with the body tissue 400, and the three-way valve 31 of the switching device 30 is shown. Initially in the first switching state, the control module 60 first determines whether the value of the fluid pressure (ie, intracranial pressure) of the human tissue 400 sensed by the hydraulic sensing device 40 is not less than a first Set value (for example, 20mmHg).

When the control module 60 determines that the value of the liquid pressure sensed by the hydraulic sensing device 40 is not less than the first set value, that is, the intracranial pressure of the patient is too high, the control module 60 performs the following: Control process:

The control module 60 controls the three-way valve 31 of the switching device 30 to switch from the first switching state to the second switching state, and the liquid 410 is drained from the human body tissue 400 into the container 10 by gravity drainage. In addition, it can be understood that if the medical personnel are to be manually confirmed for safety reasons, the control module 60 determines that the value of the liquid pressure sensed by the hydraulic sensing device 40 is not less than the first setting. The control module 60 can also transmit a notification signal to the mobile device 90. The medical staff can operate the mobile device 90 to transmit a control signal to the control module 60 according to the current condition of the patient. The group 60 then determines whether to control the three-way valve 31 of the switching device 30 to switch from the first switching state to the second switching state based on the control signal.

At this time, if the control module 60 determines that the increased value of the liquid level sensed by the liquid level sensing device 50 within a predetermined execution time (for example, 10 min) is equal to a second set value (for example, 5 ml), that is, During the predetermined execution time, the liquid 410 has been discharged from the body tissue 400 to the second set value into the container 10, and the control module 60 controls the three-way valve 31 of the switching device 30 to switch again to The first switching state; then, if the control module 60 determines that the cumulative total amount of the liquid 410 drained from the body tissue 400 into the container 10 is less than a third set value (eg, 15 ml), ie, from the human body The total amount of liquid 410 expelled into the container 10 by the tissue 400 has not exceeded the physician's The safety limit of the treatment, the control module 60 determines again whether the value of the liquid pressure sensed by the hydraulic sensing device 40 is not less than the first set value, but if the control module 60 determines from the human body The cumulative total amount of the liquid 410 drained by the tissue 400 into the container 10 has not been less than the third set value, i.e., the total amount of liquid 410 discharged from the body tissue 400 into the container 10 has exceeded medical safety. The upper limit, the control module 60 transmits an alarm signal to the display 80, and transmits an alarm signal to the mobile device 90, so that the medical staff who see the alarm signal can quickly check the condition of the patient and decide to follow up. Medical treatment to be taken.

Conversely, if the control module 60 determines that the increased value of the liquid level sensed by the liquid level sensing device 50 within the predetermined execution time is not equal to the second set value, that is, during the predetermined execution time, The liquid 410 is not discharged from the body tissue 400 to the second set value into the container 10. The control module 60 controls the three-way valve 31 of the switching device 30 to remain in the second switching state until the The control module 60 determines that the increased value of the liquid level sensed by the liquid level sensing device 50 is equal to the second set value, that is, ensures that the liquid 410 can be discharged from the human body tissue 400 by the second set value. Within the container 10, a medical effect is achieved.

In addition, when the control module 60 determines that the value of the liquid pressure sensed by the hydraulic sensing device 40 is less than the first set value, that is, the intracranial pressure of the patient is normal, the control module 60 transmits the liquid. The value of the pressure is displayed on the display 80 for viewing by the medical staff in the patrol room.

Therefore, the control module 60 can automatically control the value of the liquid pressure sensed by the hydraulic sensing device 40 and the liquid level sensed by the liquid level sensing device 50. The switching state of the three-way valve 31 of the switching device 30 is to automatically discharge the liquid 410 (cerebrospinal fluid) of a predetermined volume from the ventricle of the patient to the container 10, thereby maintaining the intracranial pressure of the patient in a normal range.

As such, the second embodiment can achieve the same objects and effects as the first embodiment described above.

In summary, the constant pressure automatic adjustment system applicable to the human body of the present invention can not only automatically and accurately complete the treatment course of the entire treatment, but also automatically complete the recording, thereby effectively reducing the workload of the first-line medical staff, thereby reducing the workload. The risk of medical errors and the medical safety of the patient are improved, so that the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

Claims (19)

A constant pressure automatic adjusting system suitable for human body, which is used for connecting with a human body tissue, which can generate a liquid pressure. The constant pressure automatic adjusting system comprises: a container for accommodating a liquid; and a connecting line, For connecting between the human body tissue and the container, the connecting pipe has a first end portion for communicating with the human body tissue, and a second end portion communicating with the container; a switching device connected to The connecting line is between the first and second ends, the switching device is switched between a first switching state and a second switching state; a hydraulic sensing device is disposed on the switching device, The hydraulic sensing device is configured to sense the liquid pressure of the human body tissue, and when the switching device is in the first switching state, the switching device communicates with the first end portion and the hydraulic sensing device but does not communicate with the first and second An end portion, and the hydraulic sensing device senses a liquid pressure of the human body tissue, and when the switching device is in the second switching state, the switching device communicates with the first end portion and the second end portion but does not communicate with the first end portion The sense of hydraulic pressure a liquid level sensing device disposed in the container, the liquid level sensing device is configured to sense a liquid level of the liquid in the container; and a control module electrically connected to the switching device, the hydraulic sensing The device and the liquid level sensing device, the control module controls the switching of the switching device according to the value of the liquid pressure sensed by the hydraulic sensing device and the numerical value of the liquid level sensed by the liquid level sensing device . The constant pressure automatic adjustment system for human body according to claim 1, wherein the control module determines whether the value of the liquid pressure sensed by the hydraulic sensing device is not greater than a first set value, when the control mode Each time the group determines that the value of the liquid pressure sensed by the hydraulic sensing device is not greater than the first set value, the control module controls the switching device to switch from the first switching state to the second switching state, so that the The liquid is drained from the container into the body tissue. At this time, if the control module determines that the decrease value of the liquid level sensed by the liquid level sensing device is equal to a second set value, the control module controls the switching device. Switching to the first switching state again, the control module again determines whether the value of the liquid pressure sensed by the hydraulic sensing device is not greater than the first set value, and conversely, if the control module determines the liquid level sense The reduction value of the liquid level sensed by the measuring device is not equal to the second set value, and the control module controls the switching device to remain in the second switching state until the control module determines the sense of the liquid level sensing device The measured decrease in liquid level is already equal to the second set value. The constant pressure automatic adjustment system for human body according to claim 2, further comprising a display electrically connected to the control module, wherein the control module determines that the value of the liquid pressure sensed by the hydraulic sensing device is greater than At the first set value, the control module transmits the value of the liquid pressure to the display. The constant voltage automatic adjustment system for human body according to claim 2, further comprising a mobile device, wherein the mobile device communicates with the control module in a wireless manner and a wired manner, the mobile device is used to be a medical staff operation, when the control module determines that the hydraulic sensing device senses When the value of the liquid pressure is not greater than the first set value, the control module transmits a notification signal to the mobile device, and the medical staff operates the mobile device to transmit a control signal to the control module, and the control module according to the The control signal determines whether to control the switching device to switch from the first switching state to the second switching state. The constant pressure automatic adjustment system applicable to a human body according to claim 2, wherein a decrease value of the liquid level sensed by the liquid level sensing device is equal to the second set value, and the control module controls the switching After the device switches to the first switching state, if the control module determines that the cumulative total amount of the liquid drained from the container into the body tissue is less than a third set value, the control module determines the hydraulic sensing device again. Whether the value of the sensed liquid pressure is not greater than the first set value. The constant pressure automatic adjustment system for human body according to claim 5, further comprising a display electrically connected to the control module, wherein the control module determines accumulation of the liquid drained from the container into the human tissue The total amount is not less than the third set value, and the control module transmits an alarm signal to the display. The constant voltage automatic adjustment system for human body according to claim 5, further comprising a mobile device, wherein the mobile device communicates with the control module in a wireless manner and a wired manner, wherein the mobile device is used to be A medical staff operates to transmit an alarm signal to the mobile device if the control module determines that the cumulative amount of the liquid drained from the container into the body tissue is not less than the third set value. The constant pressure automatic adjustment system for human body according to claim 2, wherein the switching device has a three-way valve connected to the connecting pipe, and a a stepping motor electrically coupled to the control module and used to drive the three-way valve, the stepping motor driving the three-way valve to switch between the first switching state and the second switching state. A constant pressure automatic adjustment system suitable for a human body as claimed in claim 2, wherein the reduction value of the liquid level sensed by the liquid level sensing means is a value defined to be reduced within a predetermined execution time. The constant pressure automatic adjustment system for human body according to claim 1, wherein the control module determines whether the value of the liquid pressure sensed by the hydraulic sensing device is not less than a first set value, when the control mode Each time the group determines that the value of the liquid pressure sensed by the hydraulic sensing device is not less than the first set value, the control module controls the switching device to switch from the first switching state to the second switching state, so that the The liquid is drained from the body tissue into the container. At this time, if the control module determines that the increase value of the liquid level sensed by the liquid level sensing device is equal to a second set value, the control module controls the switching device. Switching to the first switching state again, the control module again determines whether the value of the liquid pressure sensed by the hydraulic sensing device is not less than the first set value, and conversely, if the control module determines the liquid level sense The increase value of the liquid level sensed by the measuring device is not equal to the second set value, and the control module controls the switching device to remain in the second switching state until the control module determines the sense of the liquid level sensing device The measured increase in the level is already equal to the second set value. The constant pressure automatic adjustment system for human body according to claim 10, further comprising a display electrically connected to the control module, wherein the control module determines that the value of the liquid pressure sensed by the hydraulic sensing device is less than The first setting At the time of the value, the control module transmits the value of the liquid pressure to the display of the display. The constant voltage automatic adjustment system for human body according to claim 10, further comprising a mobile device, wherein the mobile device communicates with the control module in a wireless manner and a wired manner, the mobile device is used to be When the control module determines that the value of the liquid pressure sensed by the hydraulic sensing device is not less than the first set value, the control module transmits a notification signal to the mobile device, and the medical staff operates The mobile device returns a control signal to the control module, and the control module determines, according to the control signal, whether to control the switching device to switch from the first switching state to the second switching state. The constant pressure automatic adjustment system for human body according to claim 10, wherein an increase value of the liquid level sensed by the liquid level sensing device is equal to the second set value, and the control module controls the switching After the device switches to the first switching state, if the control module determines that the cumulative total amount of the liquid drained from the body tissue into the container is less than a third set value, the control module determines the hydraulic sensing device again. Whether the value of the sensed liquid pressure is not less than the first set value. The constant voltage automatic adjustment system for human body according to claim 13, further comprising a display electrically connected to the control module, wherein the control module determines accumulation of the liquid drained from the human tissue into the container The total amount is not less than the third set value, and the control module transmits an alarm signal to the display. The constant voltage automatic adjustment system applicable to the human body according to claim 13 further includes a mobile device, and the mobile device and the control module are wirelessly One of the line modes for communicating, the mobile device being used by a medical staff member, if the control module determines that the cumulative amount of the liquid drained from the body tissue into the container is not less than the third set value, The control module transmits an alarm signal to the mobile device. The constant pressure automatic adjustment system for human body according to claim 10, wherein the switching device has a three-way valve connected to the connecting pipe, and is electrically connected to the control module and used to drive the three-way a stepper motor of the valve that drives the three-way valve to switch between the first switching state and the second switching state. A constant pressure automatic adjustment system suitable for a human body as claimed in claim 10, wherein the increased value of the liquid level sensed by the liquid level sensing means is a value defined to be increased within a predetermined execution time. The constant voltage automatic adjustment system for human body according to claim 5 or 13, further comprising a storage module, wherein the storage module is electrically connected to the control module, and the first, second and third setting values are stored in the Storage module. The constant pressure automatic adjustment system applicable to a human body according to claim 1, wherein the liquid level sensing device is a resistive liquid level sensor.