CN209967333U - Pressure-measuring constant-pressure trachea cannula air bag monitoring device - Google Patents
Pressure-measuring constant-pressure trachea cannula air bag monitoring device Download PDFInfo
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- CN209967333U CN209967333U CN201920346217.6U CN201920346217U CN209967333U CN 209967333 U CN209967333 U CN 209967333U CN 201920346217 U CN201920346217 U CN 201920346217U CN 209967333 U CN209967333 U CN 209967333U
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Abstract
The utility model relates to a pressure-measuring constant-pressure trachea cannula air bag monitoring device, which comprises a shell, wherein the top of the shell is provided with a cannula connecting pipe which is communicated with the shell, and one side of the shell is provided with a control panel; the pressure sensor, the electromagnetic valve and the air pump are arranged at the bottom of the intubation connecting pipe in the shell and are respectively communicated with the intubation connecting pipe, a power supply and a control module are arranged at the tail end of the air pump in the shell, and the power supply and the control module are electrically connected with the air pump and the control panel. The utility model discloses a pressure measurement constant voltage trachea cannula monitoring devices adopts automatic filling, gassing principle, can guarantee all the time that intubate gasbag pressure value maintains in invariable scope, effectively avoids or reduces the mechanical various complications that bring for the intubate patient of ventilating.
Description
Technical Field
The utility model belongs to the technical field of mechanical ventilation, a mechanical ventilation auxiliary device is related to, specifically speaking indicates a pressure measurement constant voltage trachea cannula gasbag monitoring devices.
Background
Mechanical ventilation is an important means for treating critical diseases such as respiratory failure, and is one of the most basic rescue means of an ICU. The wide clinical application of mechanical ventilation technology has significantly increased the incidence of ventilator-associated pneumonia, especially in critically ill patients with impaired or suppressed immune function.
In the conventional positive pressure mechanical ventilation, an artificial airway needs to be established, and an air bag of the artificial airway can be connected with a breathing machine for mechanical ventilation after being inflated. The air bag mainly has two functions, namely, the air bag ensures the tightness of the artificial air passage and ensures effective ventilation, and secondly, the air bag prevents secretions and gastric contents in the oral cavity of a patient from mistakenly entering the lower air passage so as to ensure the relative cleanness of the lower air passage.
Too high or too low a balloon pressure within the balloon may cause corresponding complications for endotracheal intubation patients. If the air bag is not inflated enough, the pressure in the air bag is too low, air leakage is possibly too much during mechanical ventilation, so that ventilation is insufficient, meanwhile, the too low air bag pressure can supply air along with a respirator, so that the diameter of a tracheal tube is enlarged, and secretions, parasitic bacteria and gastroesophageal reflux food at the oropharynx part of a patient can also leak into the tracheal tube from gaps between the tracheal wall and the air bag, so that aspiration pneumonia is caused. The air bag is inflated too much, the pressure in the air bag is too high, so that the blood perfusion of the lower layer of the tracheal mucosa can be blocked, the tracheal mucosa is subjected to ischemia, erosion and necrosis, the tissue necrosis of the tracheal wall or the hemorrhage in the trachea can be caused, even the puncture is caused, and then the tracheoesophageal fistula, the tension pneumothorax and the mediastinal emphysema can be caused. Proper balloon pressure is therefore important for mechanically ventilated patients to achieve both sealing of the airway and prevention of secretion inhalation, and to not block the flow of blood in the tracheal capillaries.
The capillary perfusion pressure of the tracheal mucosa of a human body is 20-30mmHg, the pressure is more than 30mmHg, the blood flow of the tracheal mucosa is not smooth, tissue necrosis is caused, severe consequences such as rupture or perforation of the tracheal wall are caused, the aspiration rate is increased due to the fact that the pressure of the air bag is less than 20mmHg, and the VAP incidence rate is increased. The mechanical ventilation guidelines recommend that the pressure of the balloon should be maintained at 25-30mmHg, and in order to ensure constant pressure inside the balloon, it is recommended to monitor the pressure of the balloon every 4-6 hours, however, when the patient's position changes (semi-recumbent, left-side and right-side), before and after sputum aspiration, the pressure of the balloon changes, and the material and shape of the balloon also affect the pressure of the balloon. A study in 2014 selected 27 mechanically ventilated patients (ventilation time >48 hours), measured and adjusted the balloon pressure every 2 hours, and obtained 1846 balloon pressure monitoring values in total, and the results showed that 93% of the balloon pressure values were lower than 24mmHg and 45% of the balloon pressure values were lower than 20mmHg, so that the conventional mechanical ventilation technology could not completely meet the recommended requirements of the mechanical ventilation guideline.
When the pressure of the air bag is insufficient, the currently clinically common air bag inflation methods include a finger pinching method, a fixed inflation method, a minimum closing technology, a pressure gauge inflation technology and the like, all of the methods are passive inflation, the manual inflation operation is performed when the pressure of the air bag is insufficient, the pressure change of the air bag cannot be monitored in real time, the pressure of the air bag cannot be guaranteed within a required constant range constantly, and corresponding complications are easily brought to intubated patients.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical problem, the utility model aims to provide a pressure measurement isopiestic pressure trachea cannula gasbag monitoring devices, this monitoring devices adopt automatic filling, gassing principle, can guarantee all the time that intubate gasbag pressure value maintains in invariable within range, effectively avoid or reduce the mechanical various complications that bring for intubate patient of ventilating.
In order to achieve the purpose, the utility model provides a pressure-measuring constant-pressure trachea cannula air bag monitoring device, which comprises a shell, wherein the top of the shell is provided with a cannula connecting pipe which is communicated with the shell, and one side of the shell is provided with a control panel; the bottom of an intubation tube connecting pipe in the shell is provided with a pressure sensor, an electromagnetic valve and an air pump, and the pressure sensor, the electromagnetic valve and the air pump are respectively communicated with the intubation tube connecting pipe; the tail end of the air pump in the shell is provided with a power supply and control module, and the power supply and control module is electrically connected with the air pump and the control panel.
Preferably, the power supply and control module comprises a power supply, a PID pressure controller and a solid-state relay, the PID pressure controller is electrically connected with a power supply end of the air pump through the solid-state relay, the pressure sensor, the power supply and the control panel are electrically connected with the PID pressure controller, and the control panel is electrically connected to the power supply and the electromagnetic valve at the same time.
Preferably, a power supply end of the air pump is electrically connected with an output end of the solid-state relay, and the pressure sensor and an input end of the solid-state relay are electrically connected into the PID pressure controller.
Preferably, a safety valve is further arranged on the air outlet pipe of the air pump. Because the safety valve is a fixed threshold value which is the maximum safety value of the pressure in the air bag, when the pressure in the air bag is larger than the fixed threshold value due to accidents such as system failure, the safety valve can be automatically opened to release air, and the safety is ensured. Preferably, the air inlet of the air pump extends outside the housing.
Preferably, the front side of the control panel is provided with a display screen and a switch key, and the rear side of the control panel is provided with a circuit board.
Preferably, the switch keys comprise a power switch key, a pressure value adjusting key and an electromagnetic valve switch key.
After the technical scheme is adopted, the utility model discloses beneficial effect below having for prior art.
The utility model discloses a pressure measurement constant voltage trachea cannula gasbag monitoring devices is because intubation end connects pressure sensor simultaneously, solenoid valve and air pump, pressure sensor and air pump insert PID pressure controller respectively, pressure sensor monitors when intubation balloon pressure value is not enough, can transmit detection signal to PID pressure controller, aerify by PID pressure controller control air pump, when pressure sensor monitors intubation balloon pressure value and meets the requirements, PID pressure controller control air pump stops to aerify, when intubate patient position change arouses that intubation balloon pressure value surpasss the biggest setting value of gasbag pressure value, then carry out the pressure release operation through control panel 3 control solenoid valve 5, through this kind of automatic inflation circulation operation that lasts, guarantee intubation balloon pressure value in a constant range all the time.
Drawings
Fig. 1 is the external structure schematic diagram of the pressure-measuring constant-pressure trachea cannula air bag monitoring device of the utility model.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a bottom view of fig. 1.
Fig. 4 is a sectional view a-a of fig. 3.
Fig. 5 is the internal structure schematic diagram of the pressure-measuring constant-pressure trachea cannula air bag monitoring device of the utility model.
Fig. 6 is a schematic circuit diagram of the pressure-measuring constant-pressure trachea cannula air bag monitoring device of the utility model.
In the figure, 1-shell, 2-intubation connecting pipe, 3-control panel, 31-display screen, 32-switch button, 4-pressure sensor, 5-solenoid valve, 6-air pump, 61-air inlet, 7-power supply and control module, 8-solid state relay, 9-power supply and 10-PID pressure controller.
Detailed Description
The present invention is described below with reference to the accompanying drawings. Elements and features described in one drawing or one embodiment of the invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that the figures and descriptions have omitted, for the sake of clarity, the representation and description of components or processes that are not relevant to the present invention and known to those of ordinary skill in the art.
The invention will be further described with reference to the accompanying drawings.
Fig. 1-5 are schematic structural views of the pressure-measuring constant-pressure trachea cannula air bag monitoring device of the utility model.
See fig. 1-5. The pressure measurement isopiestic pressure trachea cannula gasbag monitoring devices of this embodiment includes an external casing 1, casing 1 is L die cavity body structure, and the short-end vertical direction of L type sets up, and the long-end horizontal direction of L type sets up. The top of the L-shaped short end of the shell is provided with an intubation connecting pipe 2, the bottom of the intubation connecting pipe 2 is communicated with the inner cavity of the shell 1, and the upper end of the intubation connecting pipe 2 is used for being connected with an intubation during mechanical ventilation. Install circular shape control panel 3 on the L type stub left side of casing, last display screen 31, switch button 32 and the circuit board of being provided with of control panel 3, display screen 31 and switch button 32 set up in the control panel front side, be convenient for operate towards the casing outside promptly, switch button 31 includes pressure value adjusting button, switch button and solenoid valve switch button, the circuit board then sets up at the control panel rear side, be convenient for promptly towards the casing inside be connected with other components and parts. The upper portion of the inner cavity of the shell 1 is provided with a pressure sensor 4 and an electromagnetic valve 5 which are connected with the lower port of the intubation tube connecting tube 2, and the pressure sensor 4 and the electromagnetic valve 5 are arranged at the lower end of the intubation tube connecting tube 2 and are connected with the intubation tube connecting tube 2 in an inverted T-shaped structure. Air pump 6 is installed to the lower extreme of pressure sensor 4 and solenoid valve 5 in the casing 1, and the L type of air pump installation casing is long to be held and the junction of short-end, and the air pump becomes direction level setting, and the air inlet 61 and the casing 1 outside intercommunication of air pump 6 guarantee to aerify the time admitting air of air pump, and the outlet duct of air pump 6 also switches on with 2 lower extremes of intubate connecting pipe. The power supply and control module 7, the air pump 6, the control panel 3, the pressure sensor 4 and the power supply and control module 7 are arranged at the tail part of the air pump along the L-shaped long end direction in the shell 1, the power supply and control module 7 simultaneously provides power for all electrical elements, signals are input to the power supply and control module 7 through the control panel 3, and the air pump 6 is controlled to be opened, inflated and closed by the power supply and control module 7. The electromagnetic valve 5 is electrically connected to the control panel at the same time, and the opening and closing of the electromagnetic valve 5 can be controlled through an electromagnetic valve switch key of the control panel 3. The safety valve is also connected and arranged on the air outlet pipe of the air pump 6, the threshold value of the safety valve is the maximum safety value of the pressure in the air bag, and when the pressure in the air bag is larger than the threshold value of the safety valve due to unexpected conditions such as system failure, the safety valve is automatically opened to ensure safety. Fig. 6 is a schematic circuit diagram of the pressure-measuring constant-pressure trachea cannula air bag monitoring device of the utility model.
See fig. 6. The power supply and control module 7 of the embodiment comprises a PID pressure controller 10, a solid-state relay 8 and a power supply 9, wherein the PID pressure controller 10 is connected with one end of a power supply end of the air pump 6 through the solid-state relay 8, and the pressure sensor 4, the power supply 9 and the control panel 3 are electrically connected to the PID pressure controller 10. The PID pressure controller 10 is connected with the control panel 3 by the power supply 9, the PID pressure controller 10 is controlled by the input signal of the control panel 3, and the air pump 6 is controlled to be opened and closed by the output signal of the PID pressure controller 10. Two output ends of the PID pressure controller 10 are electrically connected with an input end of the solid-state relay 8, one output end of the solid-state relay 8 is electrically connected with one power end (a positive end or a fire wire end) of the air pump 6 (a direct-current power supply air pump or an alternating-current power supply air pump), and the other end of the output end of the solid-state relay 8 is electrically connected with the other power end (a negative end or a zero wire end) of the air pump. Control panel 3 and PID pressure controller 10 pressure value signal control end and pressure value signal display end electric connection, the display screen display of control panel 3 front side shows current pressure value and set pressure value size, the pressure value is adjusted the button and is used for adjusting intubate gasbag pressure value scope, the circuit board of rear side is used for with each device circuit connection, can set up PID pressure controller 10's pressure value scope size through the pressure value is adjusted the button. The electromagnetic valve 5 is also electrically connected with the control panel 3, and the switch of the electromagnetic valve 5 can be controlled to be closed through an electromagnetic valve switch key on the control panel 3.
The utility model discloses a theory of operation does: and starting a power switch key, adjusting and setting a pressure output value of the PID pressure controller 10 through a pressure value adjusting key on the control panel 3, and controlling the switch of the electromagnetic valve 5 to be closed through an electromagnetic valve switch key. PID pressure controller 10 then opens through solid state relay 8 control air pump 6 and aerifys, and pressure sensor 4 real-time supervision intubate gasbag pressure value feeds back the gasbag pressure value to PID pressure controller 10, is transmitted to control panel 3 by PID pressure controller 10 and exports, when pressure sensor 4 monitored current intubate gasbag pressure value and reached the setting value minimum, then PID pressure controller 10 control solid state relay 8, makes air pump 6 cut off the power supply and closes and stop aerifing. When the body position of the intubator patient changes and the pressure value of the intubator air bag exceeds the maximum set value, the safety valve on the air outlet pipe of the air pump automatically releases the pressure, or the electromagnetic valve 5 is controlled by the control panel 3 to release the pressure, so that the work of inflation and deflation is circulated, and the pressure value of the intubator air bag is ensured to be within the set constant range.
Although the present invention and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims. Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, means, methods, or steps, presently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, devices, means, methods, or steps.
Claims (7)
1. The pressure-measuring constant-pressure trachea cannula air bag monitoring device is characterized by comprising a shell, wherein a cannula connecting pipe is arranged at the top of the shell and is communicated with the shell, and a control panel is arranged on one side of the shell; the bottom of an intubation tube connecting pipe in the shell is provided with a pressure sensor, an electromagnetic valve and an air pump, and the pressure sensor, the electromagnetic valve and the air pump are respectively communicated with the intubation tube connecting pipe; the tail end of the air pump in the shell is provided with a power supply and control module, and the power supply and control module is electrically connected with the air pump and the control panel.
2. The pressure measuring constant-pressure trachea cannula air bag monitoring device according to claim 1, wherein the power supply and control module comprises a power supply, a PID pressure controller and a solid state relay, the PID pressure controller is electrically connected with a power supply end of the air pump through the solid state relay, the pressure sensor, the power supply and the control panel are electrically connected with the PID pressure controller, and the control panel is electrically connected with the power supply and the electromagnetic valve at the same time.
3. The pressure-measuring constant-pressure trachea cannula airbag monitoring device according to claim 2, wherein a power supply end of the air pump is electrically connected with an output end of the solid-state relay, and the pressure sensor is electrically connected with an input end of the solid-state relay and is connected into the PID pressure controller.
4. The manometric constant pressure trachea cannula balloon monitoring device according to claim 3, wherein a safety valve is further provided on the air outlet tube of said air pump.
5. The manometric, isobaric endotracheal intubation balloon monitoring device according to claim 4, wherein the air inlet of said air pump protrudes outside the casing.
6. The pressure measuring constant-pressure trachea cannula air bag monitoring device according to claim 1 or 2, wherein a display screen and a switch button are arranged on the front side of the control panel, and a circuit board is arranged on the rear side of the control panel.
7. The pressure measuring constant pressure trachea cannula air bag monitoring device according to claim 6, wherein the switch buttons comprise a power switch button, a pressure value adjusting button and an electromagnetic valve switch button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920346217.6U CN209967333U (en) | 2019-03-19 | 2019-03-19 | Pressure-measuring constant-pressure trachea cannula air bag monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920346217.6U CN209967333U (en) | 2019-03-19 | 2019-03-19 | Pressure-measuring constant-pressure trachea cannula air bag monitoring device |
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| CN209967333U true CN209967333U (en) | 2020-01-21 |
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| CN201920346217.6U Expired - Fee Related CN209967333U (en) | 2019-03-19 | 2019-03-19 | Pressure-measuring constant-pressure trachea cannula air bag monitoring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111437484A (en) * | 2020-05-08 | 2020-07-24 | 绵竹市人民医院 | Breathing machine module type trachea cannula catheter |
| CN113465891A (en) * | 2021-05-11 | 2021-10-01 | 任燕萍 | Pressure-measuring constant-pressure trachea cannula air bag detection device |
| CN116492552A (en) * | 2022-12-15 | 2023-07-28 | 中国人民解放军总医院第二医学中心 | Aviation medical ventilator gasbag pressure constant device |
-
2019
- 2019-03-19 CN CN201920346217.6U patent/CN209967333U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111437484A (en) * | 2020-05-08 | 2020-07-24 | 绵竹市人民医院 | Breathing machine module type trachea cannula catheter |
| CN113465891A (en) * | 2021-05-11 | 2021-10-01 | 任燕萍 | Pressure-measuring constant-pressure trachea cannula air bag detection device |
| CN116492552A (en) * | 2022-12-15 | 2023-07-28 | 中国人民解放军总医院第二医学中心 | Aviation medical ventilator gasbag pressure constant device |
| CN116492552B (en) * | 2022-12-15 | 2023-11-07 | 中国人民解放军总医院第二医学中心 | Aviation medical ventilator gasbag pressure constant device |
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Granted publication date: 20200121 Termination date: 20210319 |