Negative pressure adsorption device

Abstract

The present invention discloses a negative pressure adsorption device, comprising: a plurality of negative pressure adsorption bowls, conduits respectively connected to the negative pressure adsorption bowls, an air intake valve arranged in the air intake direction of the conduit, an air pump arranged in the air outlet direction of the conduit, a pressure detection device arranged in the conduit, and a controller respectively connected to the air intake valve, the air pump and the pressure detection device; the controller is used to control the air pump to draw air from the conduit so that the negative pressure adsorption bowl is pressurized to a preset value, and to stop the pressure increase control when the pressure detection device detects that the negative pressure adsorption bowl has not been pressurized to the preset value within the first preset time. By setting a reasonable pressure increase time as a control, the controller controls the negative pressure adsorption bowl to increase the pressure within a reasonable time through the pressure detection device, and stops the pressure increase in time if it cannot be achieved, so as to avoid the safety hazard caused by excessive air pressure caused by over-pressurization of the negative pressure adsorption bowl, thereby improving the safety factor of the negative pressure adsorption device.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation equipment, and in particular to a negative pressure adsorption device. Background Art

[0002] The use of negative pressure adsorption devices for physical therapy is similar to the role played by cupping, that is, one or more negative pressure adsorption bowls are placed at the target location, and the gas in the negative pressure adsorption bowls is extracted to make the negative pressure adsorption bowls adsorbed at the target location. In order to improve the efficiency of physical therapy, a negative pressure adsorption device is usually equipped with multiple negative pressure adsorption bowls, each of which is placed at a different target location, and the air is pumped and released at the same time.

[0003] When a negative pressure adsorption bowl falls off, the air pressure in the gas channel will be instantly reduced. According to the control principle of the negative pressure adsorption device, when the controller detects that the air pressure in the gas channel is insufficient through the pressure detection device, it will control the air pump to increase the pressure to maintain the pressure balance. In this case, the air pressure in the gas channel can never reach the set value, and the controller keeps controlling the air pump to work, causing the air pressure in the negative pressure adsorption bowl that has not fallen off to continue to increase, which will cause uncontrollable damage to the corresponding target position. Summary of the invention

[0004] The purpose of the present invention is to provide a negative pressure adsorption device which is safer than the negative pressure adsorption device in the prior art.

[0005] In order to solve the above technical problems, the present invention provides a negative pressure adsorption device, comprising: a plurality of negative pressure adsorption bowls, a conduit connected to each of the negative pressure adsorption bowls, an air intake valve arranged in the air intake direction of the conduit, an air pump arranged in the air outlet direction of the conduit, a pressure detection device arranged in the conduit, and a controller connected to the air intake valve, the air pump and the pressure detection device respectively;

[0006] The controller is used to control the air pump to draw air from the conduit so that the negative pressure adsorption bowl is pressurized to a preset value, and to stop the pressure increase control when the pressure detection device detects that the negative pressure adsorption bowl has not been pressurized to the preset value within a first preset time.

[0007] Optionally, it also includes an alarm connected to the controller;

[0008] The controller is also used to control the alarm to issue an alarm prompt when the negative pressure adsorption bowl fails to increase the pressure to the preset value within the first preset time.

[0009] Optionally, the alarm includes at least one of a buzzer, an indicator light, an audible and visual alarm, and a voice alarm.

[0010] Optionally, the controller is further used to control the alarm to issue an alarm prompt when the negative pressure adsorption bowl fails to increase the pressure to the preset value within a second preset time;

[0011] The second preset time is shorter than the first preset time.

[0012] Optionally, the first preset time is calculated by the following formula:

[0013]

[0014] The second preset time is specifically calculated by the following formula:

[0015]

[0016] in, is the first preset time, The calibration time for the negative pressure adsorption bowl to increase the pressure to the preset value, is the preset sensitivity threshold, The second preset time.

[0017] Optionally, the calibration time is specifically the sum of reference times within the boost range corresponding to the preset value;

[0018] The reference time is the time required for the negative pressure adsorption bowl to rise by the same unit preset value, measured by the pressure detection device when each negative pressure adsorption bowl is in a sealed state.

[0019] Optionally, it also includes an air storage tank arranged between the air intake valve and the air pump.

[0020] Optionally, the air intake valve is specifically a solenoid valve.

[0021] Optionally, the conduit specifically includes branch conduits connected to the negative pressure adsorption bowls in a one-to-one correspondence, a main conduit for connecting the air inlet valve and the air pump, and a ventilation valve connecting each of the branch conduits to the main conduit.

[0022] Optionally, the number of the negative pressure adsorption bowls is specifically two;

[0023] Correspondingly, the ventilation valve is specifically a three-way valve.

[0024] The negative pressure adsorption device provided by the present invention comprises: a plurality of negative pressure adsorption bowls, conduits respectively connected to the negative pressure adsorption bowls, an air intake valve arranged in the air intake direction of the conduit, an air pump arranged in the air outlet direction of the conduit, a pressure detection device arranged in the conduit, and a controller respectively connected to the air intake valve, the air pump and the pressure detection device; the controller is used to control the air pump to draw air from the conduit so that the negative pressure adsorption bowl is pressurized to a preset value, and to stop the pressure increase control when the pressure detection device detects that the negative pressure adsorption bowl has not been pressurized to the preset value within the first preset time. By setting a reasonable pressure increase time as a control, the controller controls the negative pressure adsorption bowl to increase the pressure within a reasonable time through the pressure detection device, and stops the pressure increase in time if it cannot be achieved, so as to avoid the safety hazard caused by excessive air pressure caused by over-pressurization of the negative pressure adsorption bowl, thereby improving the safety factor of the negative pressure adsorption device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic structural diagram of a negative pressure adsorption device provided in an embodiment of the present invention;

[0027] Among them, 101 is a negative pressure adsorption bowl, 102 is a catheter, 103 is an air inlet valve, 104 is an air pump, 105 is a controller, 106 is an air storage tank, 107 is an alarm, and 108 is a pressure detection device. DETAILED DESCRIPTION

[0028] The core of the present invention is to provide a negative pressure adsorption device, which is safer than the negative pressure adsorption device in the prior art.

[0029] The following will be combined with the drawings in 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.

[0030] Figure 1 A schematic structural diagram of a negative pressure adsorption device provided in an embodiment of the present invention.

[0031] like Figure 1As shown, the negative pressure adsorption device provided by the embodiment of the present invention includes: a plurality of negative pressure adsorption bowls 101, a conduit 102 respectively connected to each negative pressure adsorption bowl 101, an air intake valve 103 arranged in the air intake direction of the conduit 102, an air pump 104 arranged in the air outlet direction of the conduit 102, a pressure detection device 108 arranged in the conduit 102, and a controller 105 respectively connected to the air intake valve 103, the air pump 104 and the pressure detection device 108;

[0032] The controller 105 is used to control the air pump 104 to draw air from the conduit 102 to increase the pressure of the negative pressure adsorption bowl 101 to a preset value, and stop the pressure increase control when the pressure detection device 108 detects that the negative pressure adsorption bowl 101 has not increased to the preset value within a first preset time.

[0033] In a specific implementation, the air inlet valve 103 can be a solenoid valve. The model of the air pump 104 is selected according to the size and number of the negative pressure adsorption bowls 101 to ensure that sufficient air suction can be provided to speed up the physical therapy process.

[0034] The controller 105 determines the value of the pressure increase required for each negative pressure adsorption bowl 101 according to the set value (specifically, it can be a pre-stored set value or a set value input through an input device), and then controls the air pump 104 to draw air from the conduit 102 to increase the pressure in the negative pressure adsorption bowl 101 to the preset value. During the pressure increase process, the air pump 104 is adjusted to draw air or the air inlet valve 103 is controlled to release air according to the pressure value fed back by the pressure detection device 108.

[0035] During the physical therapy process, it may be necessary to increase the pressure in the negative pressure adsorption bowl 101 in stages and / or reduce the pressure in stages, stay at each air pressure value for a period of time, and then change to another air pressure value. After the physical therapy is over, in order to prevent the negative pressure adsorption bowl 101 from suddenly bouncing up due to excessively fast pressure reduction, causing harm to the user, a certain pressure reduction rate should be maintained to release the pressure slowly. Similarly to the pressure increase process, the pressure reduction time corresponding to a reasonable pressure reduction rate can also be set in advance for the pressure reduction process. When the pressure in the negative pressure adsorption bowl 101 is reduced too quickly or too slowly, it indicates that there is a safety hazard. At this time, the controller 105 stops the pressure reduction control and maintains the current state.

[0036] In order to ensure the stability of air intake and exhaust, Figure 1 As shown, the negative pressure adsorption device provided in the embodiment of the present invention may further include an air tank 106 disposed between the air inlet valve 103 and the air pump 104, and the pressure detection device 108 may be disposed in the air tank 106, or may be disposed in the conduit 102 outside the air tank 106. The air tank 106 and the air inlet valve 103, the air tank 106 and the air pump 104, and the air tank 106 and the negative pressure adsorption bowl 101 are all connected through the conduit 102. The pressure detection device 108 is disposed in the air tank 106, and the measured air pressure value is used as the air pressure value in the negative pressure adsorption bowl 101.

[0037] To ensure that each negative pressure adsorption bowl 101 is evacuated or deflated at the same time, the conduit 102 specifically includes a branch conduit 102 connected to the negative pressure adsorption bowl 101 one by one, a main conduit 102 for connecting the air intake valve 103 and the air pump 104, and a ventilation valve connecting each branch conduit 102 to the main conduit 102.

[0038] For example, if there are two negative pressure adsorption bowls 101 , the ventilation valve adopts a three-way valve, wherein two ends are respectively connected to the two negative pressure adsorption bowls 101 , and the other end is connected to the intake valve 103 and the air pump 104 through the main conduit 102 .

[0039] The negative pressure adsorption device provided by the embodiment of the present invention comprises: a plurality of negative pressure adsorption bowls, conduits connected to the negative pressure adsorption bowls one by one, an air intake valve arranged in the air intake direction of the conduit, an air pump arranged in the air outlet direction of the conduit, a pressure detection device arranged in the conduit, and a controller connected to the air intake valve, the air pump and the pressure detection device respectively; the controller is used to control the air pump to draw air from the conduit so that the negative pressure adsorption bowl is pressurized to a preset value, and stop the pressure increase control when the pressure detection device detects that the negative pressure adsorption bowl has not been pressurized to the preset value within the first preset time. By setting a reasonable pressure increase time as a control, the controller controls the negative pressure adsorption bowl to increase the pressure within a reasonable time through the pressure detection device, and stops the pressure increase in time if it cannot be achieved, so as to avoid the safety hazard caused by excessive air pressure caused by over-pressurization of the negative pressure adsorption bowl, thereby improving the safety factor of the negative pressure adsorption device.

[0040] When the negative pressure adsorption bowl 101 falls off, leaks, or other problems occur, the controller 105 stops the pressure increase control and maintains the current state after determining through the pressure detection device 108 that the negative pressure adsorption bowl 101 cannot be pressurized to the set value within the predetermined time. In order to avoid the user waiting for a long time, the negative pressure adsorption device provided in the embodiment of the present invention also includes an alarm 107 connected to the controller 105 on the basis of the above embodiment; the controller 105 is also used to issue an alarm prompt when the negative pressure adsorption bowl 101 fails to increase the pressure to the preset value within the first preset time.

[0041] When the controller 105 determines through the pressure detection device 108 that the negative pressure adsorption bowl 101 has not increased the preset value within the first preset time, in addition to stopping the pressure increase control, it also controls the alarm 107 to sound an alarm prompt to promptly inform the user that the negative pressure adsorption bowl 101 has a fault.

[0042] The alarm 107 may be at least one of a buzzer, an indicator light, an audible and visual alarm 107 , and a voice alarm 107 , and two or more types of alarms 107 may be used simultaneously.

[0043] Furthermore, an abnormal pressure increase in the negative pressure adsorption bowl 101 can be warned, and the controller 105 is also used to control the alarm 107 to issue an alarm prompt when the negative pressure adsorption bowl 101 fails to increase the pressure to a preset value within a second preset time; wherein the second preset time is less than the first preset time.

[0044] In this regard, an embodiment of the present invention provides a method for calculating the first preset time and the second preset time as follows.

[0045] The first preset time is specifically calculated by the following formula:

[0046] (1)

[0047] The second preset time is specifically calculated by the following formula:

[0048] (2)

[0049] in, is the first preset time, It is the calibration time for the negative pressure adsorption bowl 101 to increase the preset pressure value. is the preset sensitivity threshold, It is the second preset time.

[0050] For different types of negative pressure adsorption devices, different preset sensitivity thresholds can be set in advance as parameters. The parameters of the preset sensitivity thresholds in the above formulas (1) and (2) can also be replaced.

[0051] Since the air pressure value and time in the pressure increasing process and the pressure decreasing process of the negative pressure adsorption bowl 101 are not in direct proportion, the same preset value for pressure increasing should have different first preset time and second preset time corresponding to the preset value for pressure increasing at different starting points. In the negative pressure adsorption device provided in the embodiment of the present invention, different calibration times are set for different pressure increasing starting points. Specifically, in the sealed state of each negative pressure adsorption bowl 101, the reference time required for the negative pressure adsorption bowl 101 to increase by the same unit preset value measured by the pressure detection device 108 can be used. Similarly, the reference time required for the negative pressure adsorption bowl 101 to decrease by the same unit preset value measured by the pressure detection device 108 can be used to obtain the calibration timetable shown in the following table:

[0052] Table 1 Negative pressure adsorption bowl 101 calibration schedule

[0053]

[0054] It should be noted that the gradient division method and gradient number given in Table 1 are only for reference. In practical applications, other gradient division methods and gradient numbers can be set as needed.

[0055] As can be seen from Table 1, through pre-calibration, each pressure increase range or pressure reduction range is calibrated with a corresponding reference time. In the process of increasing the pressure of the negative pressure adsorption bowl 101, the calibration time is specifically the sum of the reference time in the pressure increase range corresponding to the preset value; the reference time is the time required for the negative pressure adsorption bowl 101 to increase by the same unit preset value (such as 10 kPa in Table 1) measured by the pressure detection device 108 when each negative pressure adsorption bowl 101 is sealed. Similarly, in the process of depressurizing the negative pressure adsorption bowl 101, the corresponding reference time is found according to the starting point of the required pressure reduction and the pressure reduction value, and the calibration time is obtained by summing up to monitor the depressurization process.

[0056] On the basis of the above-mentioned embodiment, the negative pressure adsorption device provided in the embodiment of the present invention may further include a human-computer interaction device connected to the controller 105 .

[0057] In a specific implementation, the human-machine interaction device can be a touch screen. The human-machine interaction device receives the set value input by the user or the control command input by the staff, and the controller identifies and calls the corresponding configuration script or control script for execution, and displays the pressure value and alarm prompt of each negative pressure adsorption bowl 101 in real time on the human-machine interaction device for viewing.

[0058] The above is a detailed introduction to a negative pressure adsorption device provided by the present invention. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0059] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

Claims

1. A negative pressure adsorption device, characterized in that: include: A plurality of negative pressure adsorption bowls, conduits respectively connected to the negative pressure adsorption bowls, an air inlet valve provided in the air inlet direction of the conduit, an air pump provided in the air outlet direction of the conduit, a pressure detection device provided in the conduit, a controller respectively connected to the air inlet valve, the air pump and the pressure detection device, and an alarm connected to the controller; The controller is used to control the air pump to draw air from the conduit so that the negative pressure adsorption bowl is pressurized to a preset value, and to stop the pressure increase control when the pressure detection device detects that the negative pressure adsorption bowl has not been pressurized to the preset value within a first preset time; The alarm includes at least one of an indicator light, an audible and visual alarm, and a voice alarm; The controller is also used to control the alarm to give an alarm prompt when the negative pressure adsorption bowl fails to increase the pressure to the preset value within the first preset time; The controller is further used to control the alarm to issue an alarm prompt when the negative pressure adsorption bowl fails to increase the pressure to the preset value within a second preset time; wherein the second preset time is less than the first preset time; The first preset time is specifically calculated by the following formula: ； The second preset time is specifically calculated by the following formula: ； in, is the first preset time, The calibration time for the negative pressure adsorption bowl to increase the pressure to the preset value, is the preset sensitivity threshold, The second preset time; The calibration time is specifically the sum of the reference time within the boost range corresponding to the preset value; The reference time is the time required for the negative pressure adsorption bowl to rise by the same unit preset value, measured by the pressure detection device, when each negative pressure adsorption bowl is in a sealed state; The conduit specifically includes branch conduits connected to the negative pressure adsorption bowls in a one-to-one correspondence, a main conduit for connecting the air inlet valve and the air pump, and a ventilation valve connecting each of the branch conduits to the main conduit.

2. The negative pressure adsorption device according to claim 1, characterized in that: It also includes an air storage tank arranged between the air inlet valve and the air pump.

3. The negative pressure adsorption device according to claim 1, characterized in that: The air intake valve is specifically a solenoid valve.

4. The negative pressure adsorption device according to claim 1, characterized in that: The number of the negative pressure adsorption bowls is specifically two; Correspondingly, the ventilation valve is specifically a three-way valve.

Images