CN112604114A - Expectoration machine - Google Patents
Expectoration machine Download PDFInfo
- Publication number
- CN112604114A CN112604114A CN202110030846.XA CN202110030846A CN112604114A CN 112604114 A CN112604114 A CN 112604114A CN 202110030846 A CN202110030846 A CN 202110030846A CN 112604114 A CN112604114 A CN 112604114A
- Authority
- CN
- China
- Prior art keywords
- piston
- pressure
- piston valve
- solenoid valve
- expectoration machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 206010036790 Productive cough Diseases 0.000 title claims abstract description 28
- 206010011224 Cough Diseases 0.000 claims abstract description 19
- 239000003172 expectorant agent Substances 0.000 claims 1
- 230000003419 expectorant effect Effects 0.000 claims 1
- 210000004072 lung Anatomy 0.000 abstract description 9
- 210000003097 mucus Anatomy 0.000 abstract description 5
- 230000010355 oscillation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000028327 secretion Effects 0.000 description 4
- 210000003802 sputum Anatomy 0.000 description 4
- 208000024794 sputum Diseases 0.000 description 4
- 230000003434 inspiratory effect Effects 0.000 description 3
- 230000008288 physiological mechanism Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000002124 endocrine Effects 0.000 description 1
- 238000005399 mechanical ventilation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000018360 neuromuscular disease Diseases 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
Images
Classifications
-
- 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M16/0006—Accessories therefor, e.g. sensors, vibrators, negative pressure with means for creating vibrations in patients' airways
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
Landscapes
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
The invention provides a expectoration machine, which comprises: a housing; a gas collection chamber arranged in the shell; an air outlet which is communicated with the air collection chamber and is exposed out of the shell; a solenoid valve module for opening or closing the air collecting chamber, wherein the solenoid valve module includes a movable piston, a coil assembly fixed in a housing around the piston, a piston valve connected to the piston, and a support for maintaining the piston in a closed position; a sensor for sensing a pressure in the plenum and generating a control signal when the pressure in the plenum reaches a first predetermined pressure value; a control module coupled with the solenoid valve module. The invention provides a expectoration machine which can generate high cough pressure, thereby forming strong cough airflow, loosening lung mucus from airway and cough, and preventing patient airway collapse caused by rapid release of cough pressure.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a expectoration machine.
Background
Cough, a physiological mechanism by which normal persons clear secretions from the respiratory airways. However, for some patients suffering from cough dysfunction diseases, such as neuromuscular diseases with reduced cough force, and patients with mechanical ventilation intubation, it becomes necessary to remove airway secretions by some external force.
A mechanical insufflation and evacuation device, commonly known as a expectoration machine, is a well known device used to assist patients with ineffective coughing in clearing harmful secretions from their airways. The device simulates the physiological mechanism of cough of a normal person, and controls the airway pressure of a pipeline (a mask connecting end, a mouthpiece connecting end or a trachea cannula connecting end) connected with a patient to be alternately switched between a set positive phase inflation pressure (positive pressure phase) and a set negative phase exhaust pressure (negative pressure phase). The positive phase inflation pressure slowly rises to gradually inflate the patient's lungs, and then rapidly switches to negative phase exhaust pressure to produce a high rate of cough flow, thereby carrying away secretions in the airway. After the negative pressure phase is combined, the positive pressure phase is switched to, so that the cough is repeatedly simulated for a plurality of times until the endocrine in the air passage is fully coughed, and then the expectoration treatment is finished once. A pause phase may sometimes be added between the negative pressure phase and the positive pressure phase, the pause phase having an airway pressure of 0 (i.e., atmospheric pressure), the purpose of the pause phase being to alleviate patient discomfort and urgency caused by a continuous cough.
The problems of the prior art are as follows: the cough airflow is generated by simply switching positive and negative gas phases periodically, on one hand, positive and negative inflation pressure amplitude is required to be large, discomfort of a patient can be caused, and on the other hand, the over-saturated tidal volume can damage the lung structure of the patient, so that adverse effects are caused on the health of the patient.
Disclosure of Invention
In view of the defects in the prior art, the invention provides a expectoration machine which can generate high cough pressure, so as to form strong cough airflow, loosen lung mucus from an airway and cough, and can prevent the airway of a patient from collapsing caused by rapid release of cough pressure.
To achieve the object of the present invention, the present invention provides a expectoration machine, including: a housing; a gas collection chamber arranged in the shell; an air outlet which is communicated with the air collection chamber and is exposed out of the shell; a solenoid valve module for opening or closing the air collecting chamber, wherein the solenoid valve module includes a movable piston, a coil assembly fixed in a housing around the piston, a piston valve connected to the piston, and a support for maintaining the piston in a closed position; a sensor for sensing a pressure in the plenum and generating a control signal when the pressure in the plenum reaches a first predetermined pressure value; a control module coupled to the solenoid valve module and configured to control the coil assembly such that, in response to the expiratory pressure in the plenum reaching a first predetermined pressure value, the control module controls the coil assembly to open the piston valve in accordance with control signals received from the sensor; the control module controls the coil assembly to close the piston valve after the piston valve opens, wherein the opening and closing of the piston valve occurs at a predetermined frequency.
Preferably, the plenum side wall has an airflow outlet formed therein, and the piston valve is arranged to be in spaced engagement with the airflow outlet to close or open the airflow outlet.
Preferably, the support is a permanent magnet for generating a retaining force to retain the solenoid valve module in the closed position with the piston valve engaged with the airflow outlet.
Preferably, the support is a spring for holding the solenoid valve module in the closed position, urging the piston valve towards the airflow outlet.
Preferably, an exhaust fan is disposed at one side of the coil assembly for dispersing heat generated by the coil assembly.
Preferably, a plurality of louvers are formed in a side wall of the housing adjacent the solenoid valve module.
Preferably, a cushion is provided on the housing at an end remote from the piston valve to attenuate shock to the housing.
Preferably, the preset frequency is 5-10 Hz.
Preferably, the first predetermined pressure value is 10cmH 20.
Preferably, the solenoid valve module current is generated in a first direction by a coil to open the piston valve and in a second direction by a coil opposite the first direction to close the piston valve.
The invention has the beneficial effects that: the sputum machine disclosed by the invention can effectively loosen lung mucus by generating the oscillating pressure airflow, reduce the amplitude of positive and negative air pressure of the sputum machine, improve the use comfort of the sputum machine and protect the lung health of a patient.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below.
Fig. 1 is a cross-sectional view of the piston valve of the expectoration machine of the present invention when closed.
Fig. 2 is a cross-sectional view of the piston valve of the expectoration machine of the present invention when opened.
Fig. 3 is a diagram of the effect of the treatment pressure output by the expectoration machine of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
As shown in fig. 1-2, the present invention provides a expectoration machine, including: a housing 1; a gas collection chamber 3 arranged in the shell 1; an air outlet 2 which is communicated with the air collection chamber 3 and is exposed out of the shell 1; a solenoid valve module 4 for opening or closing the gas collecting chamber 3, wherein the solenoid valve module 4 includes a movable piston 42, a coil assembly 43 fixed in the housing 1 around the piston 42, a piston valve 44 connected to the piston 42, and a support 41 for holding the piston 42 in a closed position; a sensor for sensing the pressure in the plenum 3 and generating a control signal when the pressure in the plenum 3 reaches a first predetermined pressure value; a control module 7, said control module 7 being coupled with the solenoid valve module 4 and configured to control the coil assembly 43 such that, in response to the expiratory pressure in the plenum 3 reaching a first predetermined pressure value, the control module 7 controls the coil assembly 43 to open the piston valve 44 according to control signals received from the sensors; after the piston valve 44 is opened, the control module 7 controls the coil assembly 43 to close the piston valve 44, wherein the opening and closing of the piston valve 44 is performed at a preset frequency.
Specifically, in the invention, the piston 42 is controlled by the electromagnetic valve module 4 to rapidly open and close the air collection chamber 3 at a preset frequency, so that high-frequency oscillation airflow is generated and transmitted to the airway of the patient through the air outlet 2, lung mucus in the airway is loosened, and the effect of helping to remove sputum is achieved.
Further, in the embodiment of the present invention, an airflow outlet 45 is formed on the side wall of the plenum 3, and the piston valve 44 is configured to be detachably engaged with the airflow outlet 45 to close or open the airflow outlet 45.
Further, in the embodiment of the present invention, the support 41 is a permanent magnet for generating a holding force for holding the solenoid valve module 4 in the closed position, i.e., the piston valve 44 is engaged with the air flow outlet 45.
Further, in the embodiment of the present invention, the support 41 is a spring for holding the solenoid valve module 4 in the closed position, and specifically, the spring pushes the piston valve 44 toward the airflow outlet 45 under its own elastic force, thereby closing the airflow outlet 45.
Further, in the embodiment of the present invention, an exhaust fan is disposed on one side of the coil assembly 43 for dissipating heat generated by the coil assembly 43 and preventing the electromagnetic valve module from overheating and affecting the use of the device or damaging the device.
Further, in the embodiment of the present invention, a plurality of louvers are formed in a side wall of the housing 1 close to the solenoid valve module 4, and by forming the louvers, the exhaust fan is enabled to exhaust high-heat gas to the outside of the equipment, so as to further reduce the temperature of the solenoid valve module 4 and protect the safety of the equipment.
Further, in the embodiment of the present invention, a buffer pad 6 is provided on an end of the housing 1 away from the piston valve 44 to attenuate an impact on the housing 1. In particular, the cushion pad 6 may be made of an elastic material, such as silicone, sponge, etc., which other persons skilled in the art can easily think of, and fall within the scope of the present invention.
Further, in the embodiment of the present invention, the preset frequency is 5-10Hz, as shown in fig. 3, the preset frequency is 10Hz in this example, wherein when the inspiratory airflow is detected, the oscillation pressure generated by the expectoration machine gradually increases, the average positive inspiration pressure in the inspiratory phase increases from 0cmH20 to 20cmH20, the oscillation pressure has an amplitude of 10cmH20, and when the expiratory airflow is detected, the oscillation pressure generated by the expectoration machine decreases to the negative expiration pressure, and the average value of the negative expiration pressure is-20 cmH 20.
In the embodiment of the invention, the high-frequency oscillation airflow generated by the electromagnetic valve module 4 can effectively loosen lung mucus, so that the cough airflow of a patient can be excited without large amplitude between the positive inspiration pressure and the negative expiration pressure, and discomfort caused by high tidal volume and damage to the lung of the patient are avoided.
Further, in the embodiment of the present invention, the first predetermined pressure value is 10cmH20, and the relative pressure of the pressure in the plenum chamber 3 at the mean value of the inspiratory pressure and the expiratory pressure is detected by the sensor, so that the oscillation pressure is always kept within the range of 10cmH20, which can improve the loosening effect and reduce the discomfort brought to the patient, although in other embodiments, the first predetermined pressure value may be any value between 2 cmH20 and 30cmH20, and the invention also belongs to the protection scope of the present invention.
Further, in an embodiment of the present invention, the solenoid valve module 4 current is generated in a first direction through the coil to open the piston valve 44, and in a second direction through the coil opposite to the first direction to close the piston valve 44.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. A expectoration machine, characterized in that, expectoration machine includes:
a housing; a gas collection chamber arranged in the shell; an air outlet which is communicated with the air collection chamber and is exposed out of the shell;
a solenoid valve module for opening or closing the air collecting chamber, wherein the solenoid valve module includes a movable piston, a coil assembly fixed in a housing around the piston, a piston valve connected to the piston, and a support for maintaining the piston in a closed position; a sensor for sensing a pressure in the plenum and generating a control signal when the pressure in the plenum reaches a first predetermined pressure value;
a control module coupled to the solenoid valve module and configured to control the coil assembly such that, in response to the expiratory pressure in the plenum reaching a first predetermined pressure value, the control module controls the coil assembly to open the piston valve in accordance with control signals received from the sensor; the control module controls the coil assembly to close the piston valve after the piston valve opens, wherein the opening and closing of the piston valve occurs at a predetermined frequency.
2. A expectoration machine as claimed in claim 1, wherein the air collection chamber side wall has an air flow outlet formed therein, the piston valve being arranged to be in spaced engagement with the air flow outlet to close or open the air flow outlet.
3. The expectorant machine of claim 2, wherein the support is a permanent magnet for generating a holding force to hold the solenoid valve module in the closed position with the piston valve engaged with the airflow outlet.
4. A expectoration machine according to claim 2, wherein the support is a spring for holding the solenoid valve module in the closed position urging the piston valve towards the airflow outlet.
5. The expectoration machine of claim 1, wherein the coil assembly is provided with an exhaust fan at one side thereof for dissipating heat generated by the coil assembly.
6. The expectoration machine of claim 1, wherein a plurality of louvers are formed in a side wall of the housing adjacent the solenoid valve module.
7. A expectoration machine according to claim 1, wherein the housing is provided with a cushion at an end remote from the piston valve to attenuate impact on the housing.
8. A expectoration machine according to claim 1, wherein the preset frequency is 5-10 Hz.
9. The expectoration machine of claim 1, wherein the first predetermined pressure value is 10cmH 20.
10. The device for assisting a cough of claim 1, wherein the solenoid module current is generated in a first direction by a coil to open the piston valve and in a second direction by a coil opposite the first direction to close the piston valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110030846.XA CN112604114A (en) | 2021-01-11 | 2021-01-11 | Expectoration machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110030846.XA CN112604114A (en) | 2021-01-11 | 2021-01-11 | Expectoration machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112604114A true CN112604114A (en) | 2021-04-06 |
Family
ID=75253752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110030846.XA Pending CN112604114A (en) | 2021-01-11 | 2021-01-11 | Expectoration machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112604114A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113223388A (en) * | 2021-05-11 | 2021-08-06 | 中国人民解放军陆军军医大学第二附属医院 | Cough and vomiting simulator for infection dissemination research |
-
2021
- 2021-01-11 CN CN202110030846.XA patent/CN112604114A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113223388A (en) * | 2021-05-11 | 2021-08-06 | 中国人民解放军陆军军医大学第二附属医院 | Cough and vomiting simulator for infection dissemination research |
| CN113223388B (en) * | 2021-05-11 | 2023-01-10 | 中国人民解放军陆军军医大学第二附属医院 | Cough and vomiting simulator for infection dissemination research |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2004271999B2 (en) | Insufflation-exsufflation system for removal of pulmonary secretions | |
| RU2309770C2 (en) | Aspiration medicinal apparatus for keeping natural aspiration paths of human body open and method of prevention of snoring | |
| EP3010603B1 (en) | Device for assisting a cough | |
| JP6644778B2 (en) | Pressure control during increased cough flow | |
| CN103619392B (en) | For the auxiliary device carrying out air flue removing | |
| JP2008539841A (en) | Respiratory assistance device with gas regulating valve and respiratory assistance method | |
| JPH01223966A (en) | Respirator | |
| JP2009509610A (en) | Forced inspiration exhalation device with ventilator | |
| JP2015509423A (en) | Respiratory assistance method and apparatus | |
| CN201823138U (en) | Noninvasive respirator device | |
| CN201888981U (en) | Breathing valve for breathing machine | |
| CN104840351A (en) | Wearable external chest compression respirator synchronous to expiratory phase | |
| CN112604114A (en) | Expectoration machine | |
| EP3600506B1 (en) | A respiratory system | |
| CN106994200A (en) | A kind of portable respirator | |
| CN111330123A (en) | Breathing machine system with expectoration, shock function | |
| CN101983738A (en) | Pressure control valve for breathing machine | |
| CN110101945A (en) | It is a kind of to synchronize automatic expectoration method and system | |
| US20230285707A1 (en) | Air circuit for a respiratory therapy system | |
| CN217014966U (en) | Balloon type lung expansion phlegm cough device | |
| CN105324159B (en) | Device for assisted coughing | |
| CN218923713U (en) | Device is tempered with simple and easy breathing to chronic resistance pulmonary disease people nursing | |
| JP7323557B2 (en) | Compact fluid transfer assembly and device utilizing same | |
| CN2609586Y (en) | Gauze mask with duct for treating expiratory air of respiratory infective patient | |
| JP4625640B2 (en) | Cuffed tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210406 |