CN106823021B - Negative pressure drainage pressure regulating device, system comprising same and control method thereof - Google Patents
Negative pressure drainage pressure regulating device, system comprising same and control method thereof Download PDFInfo
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- CN106823021B CN106823021B CN201510882015.XA CN201510882015A CN106823021B CN 106823021 B CN106823021 B CN 106823021B CN 201510882015 A CN201510882015 A CN 201510882015A CN 106823021 B CN106823021 B CN 106823021B
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 241000521257 Hydrops Species 0.000 claims description 17
- 206010030113 Oedema Diseases 0.000 claims description 17
- 238000002560 therapeutic procedure Methods 0.000 claims description 12
- 230000033228 biological regulation Effects 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 3
- 206010052428 Wound Diseases 0.000 description 16
- 208000027418 Wounds and injury Diseases 0.000 description 16
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000029663 wound healing Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000002458 infectious effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/74—Suction control
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
Abstract
The invention provides a negative pressure drainage pressure regulating device arranged at a drainage tube between a negative pressure source and a effusion pot. This negative pressure drainage pressure regulating device includes: the pressure sensor is used for sensing and feeding back the pressure value of the gas flowing to the accumulated liquid tank in the drainage tube; and a valve assembly for being switchable between a continuous constant pressure mode and an intermittent pressure adjusting mode according to a user's selection. The valve assembly includes: the mechanical pressure regulating valve is arranged on the side, close to the negative pressure source, of the drainage tube and is used for presetting a safe negative pressure value; the first electromagnetic valve is arranged on the side, close to the effusion pot, of the drainage pipe and is used for realizing a low negative pressure state in the drainage pipe in an on-off mode according to a pressure value fed back by the pressure sensor; and the second electromagnetic valve is arranged on the side, close to the effusion tank, of the drainage pipe and is used for realizing a high negative pressure state in the drainage pipe in an on-off mode according to a pressure value fed back by the pressure sensor. The invention also provides a negative pressure drainage pressure regulating system comprising the device and a control method thereof.
Description
Technical Field
The invention relates to the field of negative pressure wound recovery therapy equipment, in particular to a negative pressure drainage pressure regulating device, a negative pressure drainage treatment system comprising the device and a control method for the system.
Background
Negative Pressure Wound recovery Therapy (NPWT) is a new Therapy for accelerating Wound healing in the last two decades and has been widely applied to the treatment of a series of intractable wounds, including acute, chronic and infectious wounds. It can raise wound healing rate, reduce bacterial planting and propagation and reduce dressing change times to minimum. However, in practice, during the treatment of a wound of a patient, the wound is usually injured seriously at the beginning and the required negative pressure is high, and the wound is gradually healed at the later stage of treatment without a large negative pressure. That is, during the course of treatment, the need for high or low values of negative pressure varies; if high negative pressure is continuously provided in the later period of treatment, side effect is generated on the healing of the wound, and the healing of the wound is influenced.
Disclosure of Invention
The present invention is directed to overcoming or reducing at least one or more of the problems set forth above in the prior art.
At least one object of the present invention is to provide a negative pressure drainage pressure regulating device for use in a negative pressure drainage therapy system, which has two working modes of constant pressure and intermittent pressure regulation, and adopts a semi-automatic control mode to adapt to different medical treatment schemes, thereby facilitating the rehabilitation of patients.
Another object of the present invention is to provide a negative pressure drainage therapy system having the aforementioned negative pressure drainage pressure regulating device.
The invention further aims to provide a control method of the negative pressure drainage treatment system with the negative pressure drainage pressure regulating device.
According to a first aspect of the present invention, there is provided a negative pressure drainage pressure regulating device which is provided at a drainage tube between a negative pressure source and a effusion tank, and which includes:
the pressure sensor is arranged on the drainage tube and is used for sensing and feeding back the pressure value of the gas flowing to the accumulated liquid tank in the drainage tube; and
a valve assembly for being switchable between a continuous constant pressure mode in which a pressure value in the draft tube is maintained continuously constant and an intermittent pressure regulating mode in which the pressure value in the draft tube is cycled between a high negative pressure value and a low negative pressure value for a predetermined time according to a user's selection, wherein the valve assembly comprises:
the mechanical pressure regulating valve is arranged on the side, close to the negative pressure source, of the drainage tube and is used for presetting a safe negative pressure value;
the first electromagnetic valve is arranged on the side, close to the effusion pot, of the drainage pipe and is used for realizing a low negative pressure state in the drainage pipe in an on-off mode according to a pressure value fed back by the pressure sensor; and
and the second electromagnetic valve is arranged on the side, close to the effusion tank, of the drainage pipe and is used for realizing a high negative pressure state in the drainage pipe in an on-off mode according to a pressure value fed back by the pressure sensor.
Preferably, the first electromagnetic valve is arranged between the mechanical pressure regulating valve and the pressure sensor on the drainage tube; and the second electromagnetic valve is arranged between the first electromagnetic valve on the drainage tube and the pressure sensor and determines whether the drainage tube is communicated with the outside air in an on-off mode.
When the negative pressure drainage pressure regulating device is switched to the continuous constant pressure mode, on the basis of the constant pressure value selected by the user and the pressure value fed back by the pressure sensor, when the pressure value fed back by the pressure sensor is smaller than the constant pressure value selected by the user, the on-off state of the first electromagnetic valve and the second electromagnetic valve is regulated, so that air is introduced from the outside until the pressure value fed back by the pressure sensor is equal to the constant pressure value selected by the user, and the continuous constant pressure state is realized; when the pressure value fed back by the pressure sensor is larger than the constant pressure value selected by the user, the on-off state of the first electromagnetic valve and the second electromagnetic valve is adjusted to extract the air in the drainage pipe until the pressure value fed back by the pressure sensor is equal to the constant pressure value selected by the user, so that the continuous constant pressure state is realized; and
under the condition of being switched to the intermittent pressure regulating mode, based on a high/low negative pressure value selected by a user and a pressure value fed back by a pressure sensor, when the pressure value fed back by the pressure sensor is smaller than the high/low negative pressure value selected by the user, the on-off state of the first electromagnetic valve and the second electromagnetic valve is regulated, so that air is led in from the outside until the pressure value fed back by the pressure sensor is equal to the high/low negative pressure value selected by the user, and the stable state of the high/low negative pressure value is realized; and when the pressure value fed back by the pressure sensor is larger than the high/low negative pressure value selected by the user, the on-off state of the first electromagnetic valve and the second electromagnetic valve is adjusted to extract the air in the drainage pipe until the pressure value fed back by the pressure sensor is equal to the high/low negative pressure value selected by the user, so that the stable state of the high/low negative pressure value is realized.
Preferably, the valve assembly may further comprise a throttle valve disposed between the second solenoid valve on the draft tube and the pressure sensor for regulating the flow rate of gas in the draft tube.
Preferably, the negative pressure drainage pressure regulating device further comprises a central processing unit, and the central processing unit is used for realizing automatic negative pressure regulation and/or maintaining the pressure value input by the user according to the pressure value and/or the pressure mode input by the user. Also preferably, the central processor may be further configured to maintain a continuous constant pressure state or a high/low negative pressure value steady state for a stable time based on a stable time input by a user.
Preferably, the negative pressure drainage pressure regulating device can further comprise: the power supply and the power supply manager are used for supplying and managing power supply of the negative pressure drainage pressure regulating device; the key-in end is used for inputting a pressure value and/or a pressure mode selected by a user; the display end is used for displaying the pressure value and/or the pressure mode; and the alarm is used for warning the operation state of the negative pressure drainage pressure regulating device.
According to a second aspect of the present invention, there is provided a negative pressure drainage therapy system, the system comprising: wound sucking disc, be used for providing the negative pressure source of negative pressure, hydrops jar, drainage tube and as before negative pressure drainage pressure regulating device, wherein link to each other through the drainage tube between wound sucking disc and the hydrops jar, link to each other through the drainage tube between hydrops jar and the negative pressure source, and negative pressure drainage pressure regulating device sets up drainage tube department between hydrops jar and negative pressure source.
According to a third aspect of the present invention, there is provided a control method of the negative pressure drainage therapy system as described above, the control method comprising: and switching the negative pressure drainage pressure regulating device to a continuous constant pressure mode or an intermittent pressure regulating mode according to the selection of a user.
Preferably, the control method further includes: under the condition of being switched to the continuous constant pressure mode, acquiring a constant pressure value selected by a user and a pressure value fed back by a pressure sensor, and when the pressure value fed back by the pressure sensor is smaller than the constant pressure value selected by the user, adjusting the on-off states of the first electromagnetic valve and the second electromagnetic valve to introduce air from the outside until the pressure value fed back by the pressure sensor is equal to the constant pressure value selected by the user, so that the continuous constant pressure state is realized; when the pressure value fed back by the pressure sensor is larger than the constant pressure value selected by the user, the on-off state of the first electromagnetic valve and the second electromagnetic valve is adjusted to extract the air in the drainage pipe until the pressure value fed back by the pressure sensor is equal to the constant pressure value selected by the user, so that the continuous constant pressure state is realized; and under the condition of being switched to the intermittent pressure regulating mode, acquiring a high/low negative pressure value selected by a user and a pressure value fed back by the pressure sensor, and when the pressure value fed back by the pressure sensor is smaller than the high/low negative pressure value selected by the user, regulating the on-off state of the first electromagnetic valve and the second electromagnetic valve so as to introduce air from the outside until the pressure value fed back by the pressure sensor is equal to the high/low negative pressure value selected by the user, thereby realizing the stable state of the high/low negative pressure value; and when the pressure value fed back by the pressure sensor is larger than the high/low negative pressure value selected by the user, the on-off state of the first electromagnetic valve and the second electromagnetic valve is adjusted to extract the air in the drainage pipe until the pressure value fed back by the pressure sensor is equal to the high/low negative pressure value selected by the user, so that the stable state of the high/low negative pressure value is realized.
Preferably, the control method may further include: the flow rate of the gas in the drainage tube is adjusted by the throttle valve.
Preferably, the control method may further include: and controlling the on-off state and/or the throttling state of the valve assembly through the central processing unit according to the pressure value and/or the pressure mode input by the user and the pressure value fed back by the pressure sensor.
The invention at least achieves the following technical effects:
as described above, the negative pressure drainage pressure regulating device provided by the invention has two working modes, namely, a continuous constant pressure mode and an intermittent pressure regulating mode, and adopts the combination of the valve assembly (including the mechanical pressure regulating valve, the first electromagnetic valve, the second electromagnetic valve and the like) and the pressure sensor to realize the switching of the two working modes in a semi-automatic control mode, so as to adapt to different medical schemes and be beneficial to the rehabilitation of patients. Meanwhile, the invention also provides a negative pressure drainage treatment system comprising the device and a control method for the system, which can also adapt to different medical schemes and is beneficial to the rehabilitation of patients.
Other objects that can be achieved by the present invention and other technical effects that can be achieved will be set forth in the following detailed description, which is to be read in connection with the description of the specific embodiments and the drawings.
Drawings
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
FIG. 1 is a block diagram schematic of the structure of a negative pressure drainage therapy system according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a negative pressure drainage pressure regulating device in the negative pressure drainage therapy system according to an embodiment of the present invention; and
fig. 3 is a flow chart of the operation of the negative pressure drainage pressure regulating device in the negative pressure drainage treatment system according to the specific embodiment of the invention.
Reference numerals
1-a wound sucker, 2-a drainage tube, 3-a liquid accumulation tank, 4-a negative pressure drainage pressure regulating device, 400-a central processing unit, 410-a mechanical pressure regulating valve, 420-a first electromagnetic valve, 430-a second electromagnetic valve, 440-a throttle valve, 450-a pressure sensor, 460-a key-in end, 470-a display end, 480-a power supply, 481-a power manager, 490-an alarm, 5-a negative pressure source and 6-other drainage tubes.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements throughout. The specific embodiments described below with reference to the drawings are illustrative and intended to illustrate the invention and should not be construed as a limitation of the invention.
Fig. 1 shows a negative pressure drainage therapy system, which essentially comprises: wound sucking disc 1, be used for providing negative pressure source 5, hydrops jar 3, drainage tube 2,6 and negative pressure drainage regulator 4 of negative pressure, wherein, link to each other through drainage tube 6 between wound sucking disc 1 and the hydrops jar 3, link to each other through drainage tube 2 between hydrops jar 3 and the negative pressure source 5, and negative pressure drainage regulator 4 sets up drainage tube 2 department between hydrops jar 3 and negative pressure source 5.
According to the invention, the main function of the negative pressure drainage and pressure regulation device 4 is to provide the negative pressure value required by a user according to the requirement and to switch the operation between the continuous constant pressure mode and the intermittent pressure regulation mode according to the requirement of the user. As shown in fig. 2, the negative pressure drainage pressure regulating device 4 mainly includes a pressure sensor 450 and a valve assembly, wherein the pressure sensor 450 is provided on the drainage tube 2 and is used for sensing and feeding back a pressure value of gas in the drainage tube 2, and the valve assembly is used for being capable of switching between a continuous constant pressure mode in which the pressure value in the drainage tube 2 is kept continuously constant and an intermittent pressure regulating mode in which the pressure value in the drainage tube 2 is circulated between a high negative pressure value and a low negative pressure value for a predetermined time according to a user's selection.
According to an embodiment of the present invention, the valve assembly comprises a mechanical pressure regulating valve 410, a first solenoid valve 420 and a second solenoid valve 430. Specifically, the mechanical pressure regulating valve 410 is disposed on the side of the drain tube 2 close to the negative pressure source 3 for presetting a safe negative pressure value. For example, a maximum safe negative pressure value, that is, the maximum negative pressure that the patient can bear can be set through the mechanical pressure regulating valve 410 to ensure that the negative pressure value provided by the pressure regulator does not exceed the maximum safe negative pressure value in any abnormal situation, thereby effectively protecting the safety of the patient. The mechanical pressure regulating valve 410 may be manually adjustable. The first electromagnetic valve 420 is arranged on the side of the drainage tube 2 close to the liquid accumulation tank 3 and is used for realizing a low negative pressure state in the drainage tube 2 in an on-off mode according to a pressure value fed back by the pressure sensor 450; the second electromagnetic valve 430 is also disposed at the side of the drainage tube 2 close to the accumulated liquid tank 3, and is used for realizing a high negative pressure state in the drainage tube 2 in an on-off manner according to the pressure value fed back by the pressure sensor 450. Specifically, the first electromagnetic valve 420 is provided between the mechanical pressure regulating valve 410 and the pressure sensor 450 on the drain tube 2; and the second solenoid valve 430 is disposed between the first solenoid valve 420 on the drain tube 2 and the pressure sensor 450, and determines whether the drain tube 2 is in communication with the outside air in an on-off manner. In this way, the apparatus can be switched between the continuous constant pressure mode and the intermittent pressure regulating mode according to the user's selection by the cooperative operation of the mechanical pressure regulating valve 410, the first solenoid valve 420 and the second solenoid valve 430 in the valve assembly based on the pressure value sensed and fed back by the pressure sensor 450.
The working flow chart of the negative pressure drainage pressure regulating device 4 according to the invention is shown in fig. 3. First, a maximum safe negative pressure value is set by the mechanical pressure regulating valve 410. And then, selecting the mode according to the user requirement.
Under the condition of being switched to the continuous constant pressure mode, on the basis of the constant pressure value selected by the user and the pressure value fed back by the pressure sensor 450, when the pressure value fed back by the pressure sensor 450 is smaller than the constant pressure value selected by the user, the on-off states of the first 420 and second 430 electromagnetic valves are adjusted to introduce air from the outside until the pressure value fed back by the pressure sensor 450 is equal to the constant pressure value selected by the user, so that the continuous constant pressure state is realized; and when the pressure value fed back by the pressure sensor 450 is greater than the constant pressure value selected by the user, the on-off state of the first 420 and second 430 solenoid valves is adjusted to draw the air in the drainage tube 2 until the pressure value fed back by the pressure sensor 450 is equal to the constant pressure value selected by the user, thereby realizing a continuous constant pressure state. Specifically, when the pressure value fed back by the pressure sensor 450 is less than the constant pressure value selected by the user, the first solenoid valve 420 is turned off and the second solenoid valve 430 is turned on to introduce air from the outside until the pressure value fed back by the pressure sensor 450 is equal to the constant pressure value selected by the user, and then the second solenoid valve 430 is turned off to maintain a continuous constant pressure state; and when the pressure value fed back by the pressure sensor 450 is greater than the constant pressure value selected by the user, the first solenoid valve 420 is turned on and the second solenoid valve 430 is turned off to draw the air in the drainage tube 2 until the pressure value fed back by the pressure sensor 450 is equal to the constant pressure value selected by the user, and then the first solenoid valve 420 is turned off to maintain the continuous constant pressure state.
When the pressure sensor 450 is switched to the intermittent pressure regulating mode, on the basis of the high/low negative pressure value selected by the user and the pressure value fed back by the pressure sensor 450, when the pressure value fed back by the pressure sensor 450 is smaller than the high/low negative pressure value selected by the user, the on-off states of the first 420 and second 430 electromagnetic valves are regulated, so that air is introduced from the outside until the pressure value fed back by the pressure sensor 450 is equal to the high/low negative pressure value selected by the user, and therefore the high/low negative pressure value stable state is realized, and the next pressure state is switched to until the state stable time is over; and when the pressure value fed back by the pressure sensor 450 is greater than the high/low negative pressure value selected by the user, the on/off state of the first 420 and second 430 solenoid valves is adjusted to draw the air in the drainage tube 2 until the pressure value fed back by the pressure sensor 450 is equal to the high/low negative pressure value selected by the user, thereby realizing the stable state of the high/low negative pressure value, and switching to the next pressure state until the stable time of the state is over. Specifically, when the pressure value fed back by the pressure sensor 450 is less than the high/low negative pressure value selected by the user, the first solenoid valve 420 is turned off and the second solenoid valve 430 is turned on to introduce air from the outside until the pressure value fed back by the pressure sensor 450 is equal to the high/low negative pressure value selected by the user, and then the second solenoid valve 430 is turned off to maintain the high/low negative pressure value in a stable state; and when the pressure value fed back by the pressure sensor 450 is greater than the high/low negative pressure value selected by the user, the first solenoid valve 420 is turned on and the second solenoid valve 430 is turned off to draw the air in the drainage tube 2 until the pressure value fed back by the pressure sensor 450 is equal to the high/low negative pressure value selected by the user, and then the first solenoid valve 420 is turned off to maintain the high/low negative pressure value in a stable state, thereby achieving dynamic negative pressure stabilization.
In addition, according to the present invention, as shown in fig. 2, the negative pressure drainage pressure regulating device 4 may further include a throttle valve 440. A throttle valve 440 is provided between the second solenoid valve 430 on the draft tube 2 and the pressure sensor 450 for adjusting the flow rate of the gas in the draft tube 2 to obtain a feedback time. The throttle valve 440 may be a vacuum throttle valve.
Meanwhile, the negative pressure drainage pressure regulating device 4 provided by the invention further comprises a central processing unit 400. The central processor 400 is used for automatically adjusting the negative pressure and/or maintaining the pressure value input by the user according to the pressure value and/or the pressure mode input by the user. Also, the central processor 400 is further configured to maintain a continuous constant pressure state or a high/low negative pressure value steady state for a stable time based on the stable time input by the user. The central processor 400 (such as a single chip microcomputer) can detect the pressure value sensed by the pressure sensor 450 installed on the drainage tube 2 to realize the adjustment of different pressures, and realize the function of automatically adjusting the negative pressure of the negative pressure drainage pressure regulating device 4 or keeping the selected pressure value according to the pressure value fed back by the sensor. As mentioned above, the cpu 400 can also control the negative pressure drainage pressure regulating device 4 to implement the working mode (continuous constant pressure mode or intermittent pressure regulating mode) set by the user. Moreover, in the intermittent pressure regulating mode, the central processing unit 400 can switch back and forth according to the high negative pressure and the low negative pressure set by the user, and the high negative pressure stabilization time and the low negative pressure stabilization time to realize the intermittent pressure regulating operation of the negative pressure drainage pressure regulating device 4 required by the user.
In addition, as shown in fig. 2, the negative pressure drainage pressure regulating device 4 provided by the present invention may further include a power supply 480, a power manager 481, a key input end 460, a display end 470, an alarm 490, and the like. Specifically, the power supply 480 and the power manager 481 are used for supplying and managing power supply of the negative pressure drainage and pressure regulation device 4; the key-in end 460 is used for inputting a pressure value and/or a pressure mode selected by a user; the display end 470 is used for displaying the pressure value and/or the pressure mode; and the alarm 490 is used for warning the operating state of the negative pressure drainage pressure regulating device 4.
Therefore, the negative pressure drainage pressure regulating device provided by the invention has two working modes, namely a continuous constant pressure mode and an intermittent pressure regulating mode, and adopts the combination of the valve assembly (comprising the mechanical pressure regulating valve, the first electromagnetic valve, the second electromagnetic valve and the like) and the pressure sensor to realize the switching of the two working modes in a semi-automatic control mode so as to adapt to different medical schemes and be beneficial to the rehabilitation of patients. Meanwhile, the invention also provides a negative pressure drainage treatment system comprising the device and a control method for the system, which can also adapt to different medical schemes and is beneficial to the rehabilitation of patients.
Meanwhile, the invention also provides a negative pressure drainage treatment system comprising the negative pressure drainage pressure regulating device. As shown in fig. 1, the negative pressure drainage therapy system includes: wound sucking disc 1, be used for providing negative pressure source 5, hydrops jar 3, drainage tube 2,6 and aforementioned negative pressure drainage regulator 4, wherein, link to each other through drainage tube 6 between wound sucking disc 1 and the hydrops jar 3, link to each other through drainage tube 2 between hydrops jar 3 and the negative pressure source 5, and negative pressure drainage regulator 4 sets up drainage tube 2 department between hydrops jar 3 and negative pressure source 5.
In addition, the invention also provides a control method of the negative pressure drainage treatment system. As shown in fig. 3, the control method includes: first, a maximum safe negative pressure value is set by the mechanical pressure regulating valve 410. Then, the negative pressure drainage pressure regulating device 4 is switched to a continuous constant pressure mode or an intermittent pressure regulating mode according to the selection of the user. Further, the control method further includes: under the condition of being switched to the continuous constant pressure mode, acquiring a constant pressure value selected by a user and a pressure value fed back by a pressure sensor, and when the pressure value fed back by the pressure sensor is smaller than the constant pressure value selected by the user, adjusting the on-off states of the first electromagnetic valve and the second electromagnetic valve to introduce air from the outside until the pressure value fed back by the pressure sensor is equal to the constant pressure value selected by the user, so that the continuous constant pressure state is realized; when the pressure value fed back by the pressure sensor is larger than the constant pressure value selected by the user, the on-off state of the first electromagnetic valve and the second electromagnetic valve is adjusted to extract the air in the drainage pipe until the pressure value fed back by the pressure sensor is equal to the constant pressure value selected by the user, so that the continuous constant pressure state is realized; and under the condition of being switched to the intermittent pressure regulating mode, acquiring a high/low negative pressure value selected by a user and a pressure value fed back by a pressure sensor, and when the pressure value fed back by the pressure sensor is smaller than the high/low negative pressure value selected by the user, adjusting the on-off state of the first electromagnetic valve and the second electromagnetic valve to introduce air from the outside until the pressure value fed back by the pressure sensor is equal to the high/low negative pressure value selected by the user, so as to realize a stable state of the high/low negative pressure value, and switching to the next pressure state until the stable time of the state is over; and when the pressure value fed back by the pressure sensor is larger than the high/low negative pressure value selected by the user, the on-off state of the first electromagnetic valve and the second electromagnetic valve is adjusted to extract the air in the drainage pipe until the pressure value fed back by the pressure sensor is equal to the high/low negative pressure value selected by the user, so that the stable state of the high/low negative pressure value is realized, and the next pressure state is switched until the stable time of the state is over.
In addition, the control method may further include: the flow velocity of gas in the drainage tube is adjusted through a throttle valve; and/or controlling the on-off state and/or the throttling state of the valve assembly through the central processing unit according to the pressure value and/or the pressure mode input by the user and the pressure value fed back by the pressure sensor.
Therefore, the negative pressure drainage treatment system and the control method thereof provided by the invention adopt two working modes, namely a continuous constant pressure mode and an intermittent pressure regulating mode, of the negative pressure drainage pressure regulating device provided by the invention, and adopt the combination of the valve assembly (comprising the mechanical pressure regulating valve, the first electromagnetic valve, the second electromagnetic valve and the like) and the pressure sensor to realize the switching of the two working modes in a semi-automatic control mode so as to adapt to different medical schemes and be beneficial to the rehabilitation of patients. Meanwhile, the invention also provides a negative pressure drainage treatment system comprising the device and a control method for the system, which can also adapt to different medical schemes and is beneficial to the rehabilitation of patients.
The above-described embodiments of the present invention are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention, and it will be apparent to those skilled in the art that any changes and modifications may be made within the scope of the present invention without departing from the spirit and scope of the invention. The protection scope of the present invention should be determined by the claims of the present application.
Claims (12)
1. The utility model provides a negative pressure drainage pressure regulating device (4), is set up drainage tube (2) department between negative pressure source (5) and hydrops jar (3), its characterized in that, negative pressure drainage pressure regulating device includes:
the pressure sensor (450) is arranged on the drainage tube and is used for sensing and feeding back the pressure value of the gas flowing to the liquid accumulation tank (3) in the drainage tube; and
a valve assembly for being switchable between a continuous constant pressure mode in which a pressure value in the draft tube is maintained continuously constant and an intermittent pressure regulating mode in which the pressure value in the draft tube is cycled between high and low negative pressure values for a predetermined time, according to a user's selection, wherein the valve assembly comprises:
the mechanical pressure regulating valve (410) is arranged on the side, close to the negative pressure source, of the drainage tube and is used for presetting a safe negative pressure value;
the first electromagnetic valve (420) is arranged on the side, close to the effusion pot, of the drainage pipe and is used for realizing a low negative pressure state in the drainage pipe in an on-off mode according to a pressure value fed back by the pressure sensor; and
the second electromagnetic valve (430) is arranged on the side, close to the effusion tank, of the drainage pipe and is used for realizing a high negative pressure state in the drainage pipe in an on-off mode according to a pressure value fed back by the pressure sensor;
wherein the first electromagnetic valve is arranged between the mechanical pressure regulating valve and the pressure sensor on the drainage tube; and the second solenoid valve is disposed between the first solenoid valve on the draft tube and the pressure sensor.
2. The negative pressure drainage pressure regulating device (4) according to claim 1,
the first electromagnetic valve is arranged between the mechanical pressure regulating valve and the pressure sensor on the drainage tube; and the second electromagnetic valve is arranged between the first electromagnetic valve on the drainage tube and the pressure sensor and determines whether the drainage tube is communicated with the outside air in an on-off mode.
3. The negative pressure drainage pressure regulating device (4) according to claim 2,
under the condition of being switched to the continuous constant pressure mode, on the basis of a constant pressure value selected by a user and a pressure value fed back by the pressure sensor, when the pressure value fed back by the pressure sensor is smaller than the constant pressure value selected by the user, the on-off states of the first electromagnetic valve and the second electromagnetic valve are adjusted to introduce air from the outside until the pressure value fed back by the pressure sensor is equal to the constant pressure value selected by the user, so that the continuous constant pressure state is realized; when the pressure value fed back by the pressure sensor is larger than the constant pressure value selected by the user, the on-off state of the first electromagnetic valve and the second electromagnetic valve is adjusted to extract the air in the drainage pipe until the pressure value fed back by the pressure sensor is equal to the constant pressure value selected by the user, so that the continuous constant pressure state is realized; and
under the condition of being switched to the intermittent pressure regulating mode, based on a high/low negative pressure value selected by a user and a pressure value fed back by the pressure sensor, when the pressure value fed back by the pressure sensor is smaller than the high/low negative pressure value selected by the user, the on-off states of the first electromagnetic valve and the second electromagnetic valve are regulated, so that air is led in from the outside until the pressure value fed back by the pressure sensor is equal to the high/low negative pressure value selected by the user, and the stable state of the high/low negative pressure value is realized; and when the pressure value fed back by the pressure sensor is larger than the high/low negative pressure value selected by the user, the on-off state of the first electromagnetic valve and the second electromagnetic valve is adjusted to extract the air in the drainage pipe until the pressure value fed back by the pressure sensor is equal to the high/low negative pressure value selected by the user, so that the stable state of the high/low negative pressure value is realized.
4. The negative pressure drainage pressure regulating device (4) according to claim 2, wherein the valve assembly further comprises:
and the throttle valve (440) is arranged between the second electromagnetic valve on the drainage pipe and the pressure sensor and is used for adjusting the flow rate of the gas in the drainage pipe.
5. The negative pressure drainage pressure regulating device (4) according to claim 4, further comprising:
and the central processing unit (400) is used for realizing automatic negative pressure regulation and/or maintaining the pressure value input by the user according to the pressure value and/or the pressure mode input by the user.
6. The negative pressure drainage pressure regulating device (4) according to claim 5, wherein the CPU is further configured to maintain a continuous constant pressure state or a high/low negative pressure value stable state during a stable time based on a stable time input by a user.
7. The negative pressure drainage pressure regulating device (4) according to any one of claims 1 to 6, further comprising:
the power supply (480) and the power manager (481) are used for providing and managing power supply of the negative pressure drainage pressure regulating device;
a key-in terminal (460) for inputting a pressure value and/or pressure pattern selected by a user;
a display terminal (470) for displaying pressure values and/or pressure patterns; and
and the alarm (490) is used for warning the operation state of the negative pressure drainage pressure regulating device.
8. A negative pressure drainage therapy system, comprising: wound sucking disc (1), be used for providing negative pressure source (5), hydrops jar (3), drainage tube (2,6) and according to any one of claims 1-7 negative pressure drainage pressure regulating device (4), wherein, wound sucking disc (1) with link to each other through drainage tube (6) between hydrops jar (3), hydrops jar (3) with link to each other through drainage tube (2) between negative pressure source (5), and negative pressure drainage pressure regulating device (4) set up hydrops jar (3) with drainage tube (2) between negative pressure source (5) department.
9. The system of claim 8, wherein the system is configured to perform the steps of:
and switching the negative pressure drainage pressure regulating device (4) to the continuous constant pressure mode or the intermittent pressure regulating mode according to the selection of a user.
10. The system of claim 9, wherein the system is further configured to perform the steps of:
under the condition of being switched to a continuous constant pressure mode, acquiring a constant pressure value selected by a user and a pressure value fed back by the pressure sensor, and when the pressure value fed back by the pressure sensor is smaller than the constant pressure value selected by the user, adjusting the on-off states of the first electromagnetic valve and the second electromagnetic valve to introduce air from the outside until the pressure value fed back by the pressure sensor is equal to the constant pressure value selected by the user, so that the continuous constant pressure state is realized; when the pressure value fed back by the pressure sensor is larger than the constant pressure value selected by the user, the on-off state of the first electromagnetic valve and the second electromagnetic valve is adjusted to extract the air in the drainage pipe until the pressure value fed back by the pressure sensor is equal to the constant pressure value selected by the user, so that the continuous constant pressure state is realized; and
under the condition of being switched to an intermittent pressure regulating mode, acquiring a high/low negative pressure value selected by a user and a pressure value fed back by a pressure sensor, and when the pressure value fed back by the pressure sensor is smaller than the high/low negative pressure value selected by the user, adjusting the on-off state of a first electromagnetic valve and a second electromagnetic valve so as to introduce air from the outside until the pressure value fed back by the pressure sensor is equal to the high/low negative pressure value selected by the user, thereby realizing the stable state of the high/low negative pressure value; and when the pressure value fed back by the pressure sensor is larger than the high/low negative pressure value selected by the user, the on-off state of the first electromagnetic valve and the second electromagnetic valve is adjusted to extract the air in the drainage pipe until the pressure value fed back by the pressure sensor is equal to the high/low negative pressure value selected by the user, so that the stable state of the high/low negative pressure value is realized.
11. The system of claim 9, wherein the system is further configured to perform the steps of:
and the flow rate of the gas in the drainage pipe is adjusted through the throttle valve.
12. The system of claim 11, wherein the system is further configured to perform the steps of:
and controlling the on-off state and/or the throttling state of the valve assembly through the central processing unit according to a pressure value and/or a pressure mode input by a user and a pressure value fed back by the pressure sensor.
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| CN108392687B (en) * | 2018-04-20 | 2020-09-22 | 江苏奥普莱医疗用品有限公司 | ICU nursing is with quick drainage device |
| CN108760160B (en) * | 2018-05-10 | 2020-02-07 | 无锡格林司通自动化设备有限公司 | Pressure regulating system |
| CN109793950A (en) * | 2019-03-28 | 2019-05-24 | 江苏鱼跃医疗设备股份有限公司 | A kind of aspirator negative pressure Automatic adjustment method and system |
| CN110833634A (en) * | 2019-11-29 | 2020-02-25 | 振德医疗用品股份有限公司 | Negative pressure drainage system and drainage method thereof |
| CN111202873A (en) * | 2020-03-16 | 2020-05-29 | 西安赫特海斯电子科技有限公司 | Detachable negative pressure auxiliary drainage device and control method thereof |
| CN111658843A (en) * | 2020-06-30 | 2020-09-15 | 西安交通大学医学院第一附属医院 | Flushing and sucking drainage tube and flushing and sucking drainage system |
| CN112354020A (en) * | 2020-10-26 | 2021-02-12 | 南京市儿童医院 | Intermittent negative pressure sputum suction device for congenital esophagus atresia child patient and using method thereof |
| CN112516393B (en) * | 2020-12-01 | 2022-06-14 | 中国人民解放军陆军军医大学第一附属医院 | Anti-reflux drainage device |
| CN113144300A (en) * | 2021-03-12 | 2021-07-23 | 中国人民解放军联勤保障部队第九二〇医院 | Gastrointestinal decompression device, decompression system and decompression method for clinical use in digestive system department |
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