CN106327982A - Efficiency evaluation system for noninvasive ventilation equipment - Google Patents
Efficiency evaluation system for noninvasive ventilation equipment Download PDFInfo
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Abstract
The invention relates to an efficiency evaluation system for noninvasive ventilation equipment. The system comprises a human three-dimensional head model, a simulated trachea, an active simulated lung and a processing unit, wherein one end of the simulated trachea is communicated with a month-nose channel in the three-dimensional head model, and the other end is communicated with the active simulated lung; the three-dimensional head model comprises a hard skeleton layer, a pressure sensor layer and an elastic cladding in sequence from inside to outside; a flow sensor for detecting actual flow entering the active simulated lung is arranged on the simulated trachea; the pressure sensor layer, the flow sensor and the active simulated lung are all communicated with the processing unit. The efficiency evaluation system for noninvasive ventilation equipment evaluates the comfort and the ventilation effectiveness when human face wears the noninvasive ventilation equipment in combination with the three-dimensional anatomic structure feature of human head and the real breathing condition of lungs, and finally evaluates the efficiency of the equipment, thereby providing a help for setting and ventilation mode of the noninvasive ventilation equipment.
Description
Technical field
The invention belongs to equipment Inspection field, be specifically related to a kind of invasive ventilation equipment permanent way management system, be used for detecting
The comfort level of invasive ventilation equipment wearer in use Head And Face and the effectiveness of ventilation.
Background technology
Invasive ventilation is a kind of effective life support and disease treatment means.At clinic, respiratory system disease sickness rate
Rising year by year, wherein the ratio of the respiratory system disease such as chronic obstructive pulmonary disease, sleep apnea syndrome improves constantly,
Invasive ventilation has had become as a kind of effective treatment means.High-altitude flight is protected, needs noninvasive positive pressure ventilation true
Protect the oxygen supply of pilot's body.Many user need to carry out life support by invasive ventilation for a long time and chronic disease is controlled
Treating, therefore the ergonomics of invasive ventilation equipment is particularly important.The work efficiency of invasive ventilation equipment mainly includes ventilatory effect and ventilation
During comfortableness.But due to the many factors such as technical limitations, design and individuation difference, some invasive ventilation equipment
Patient may be allowed in venting process not feel well.During invasive ventilation, user needs the interface of invasive ventilation equipment
Device is worn on Head And Face, for ensureing ventilatory effect, it usually needs the fixing band of interface arrangement is tightened up, and therefore will be to Head And Face
Produce local pressure, affect the comfortableness of invasive ventilation.The comfortableness of user Head And Face and venting process are closely-related,
The high pressure in short-term in interface can be caused in venting process, it is possible to local pressure can be aggravated, reduce relaxing of invasive ventilation process
Adaptive.If ensureing to wear the comfortableness of invasive ventilation interface, Head And Face not pressurized is made then to there may exist the risk of gas leakage.
Therefore the work efficiency system (comprising ventilation effectiveness and comfortableness) of invasive ventilation equipment is evaluated in design synthesis is significantly.
Summary of the invention
For achieving the above object, the present invention provides a kind of invasive ventilation equipment permanent way management system, and this system can fully be examined
Consider to the human body Head And Face soft tissue cushioning effect to stress, and autonomous respiration is to ventilation and the potential impact of stress, thus
Evaluate the comfortableness under different breathing patterns with ventilating mode and effectiveness the most truly, finally do work efficiency to equipment
Evaluate, instruct the design of invasive ventilation FIU facilities interface unit to meet the requirement of user.
For reaching object above, the technical solution used in the present invention is: provide a kind of invasive ventilation equipment permanent way management system
System, including human body three-dimensional head model, simulation trachea, actively test lung and processing unit, described simulation trachea one end is with three-dimensional
Mouth and nose passage in head model is connected, and the other end is connected with actively test lung;Described three-dimensional head model is from the inside to the outside
Include hard skeleton layer, pressure transducer layer and elastomeric overmold layer successively;Described simulation trachea is provided with for detecting entrance main
The flow transducer of actual flow in dynamic test lung;Described pressure transducer layer, flow transducer and actively test lung all with use
In detecting Head And Face diverse location pressurized situation, entering the actual airflow amount situation of actively test lung and control active test lung certainly
The processing unit of main breathing is connected.
Further, described elastomeric overmold layer uses elastic plastic material, is fitted tightly over hard skeleton layer and pressure sensing
On device layer.
Further, described active test lung includes the control performance element of controllable piston and piston, uses plunger shaft test lung
Bubble chamber, plunger shaft is connected with simulation trachea, has air-flow by simulation trachea turnover plunger shaft, Ke Yitong during piston movement
Cross control piston movement to simulate autonomous respiration campaign, and then the change of lung volume in simulation spontaneous respiration process.
Further, described active test lung includes active inspiration and two kinds of autonomous respiration modes of active expiration.
Further, described processing unit includes that the first processing module, the first processing module are connected with pressure transducer layer,
For evaluating wearer's level of comfort of head diverse location when wearing invasive ventilation equipment.
Further, described processing unit includes the second processing module, and the second processing module is connected with flow transducer, is used for
Detect the effectiveness of tested invasive ventilation equipment ventilation.
Further, described processing unit includes that the 3rd processing module, the 3rd processing module are connected with actively test lung, are used for
Control actively test lung respiratory intensity and respiratory frequency, it is achieved the actively rhythmic autonomous respiration of test lung.
Further, described pressure transducer layer arranges multiple pressure transducer, the position of multiple pressure transducers according to
Tested invasive ventilation equipment contact site different from three-dimensional head model is set, and i.e. sets at skull characteristic point.
Further, described skull characteristic point includes:
Fisrt feature point: slightly biased upper place, nasal bone midpoint, can detect pressure when wearing nose cup and oronasal mask;
Second feature point: anterior nasal spine to the midpoint of front tooth alveolar process, can detect pressure when wearing nose cup;
Third feature point: mandibular bone both sides mental foramen, along the midpoint of surface line, can detect pressure when wearing oronasal mask;
Fourth feature point: frontal tuber line midpoint, both sides and the slightly biased upper place, midpoint of glabella line, can detect and wear nose cup
Time the correct pressure of fixing device;
Fifth feature point: gold point in the range of 45 degree backward in the middle part of parietal bone on central authorities' sagittal plane, can detect and wear face shield
Time fixing band head local produce pressure;
Sixth feature point: inion, can detect the pressure that when wearing face shield, fixing band produces in head local;
Seventh feature point: both sides mastoid process, along the midpoint of surface line, can detect when wearing face shield fixing band in head local
The pressure produced;
Eighth feature point: contour with fourth feature point above the brow ridge of right side, can detect fixing device when wearing nose cup correct
The pressure in portion;
Ninth feature point: on apertura piriformis at the infraorbital groove on the right side of edge, pressure when wearing nose cup and oronasal mask can be detected;
Tenth feature point: at the cheekbone of right side, can detect the pressure that when wearing face shield, fixing band produces at cheekbone;
11st characteristic point: 1 centimeters below the infraorbital foramen of right side, on the right side of nasal notch, can detect and wear nose cup and oronasal mask
Time upper jaw bone local produce pressure;
12nd characteristic point: at the oblique line on the right side of lower jaw, can detect the pressure produced in this place when wearing oronasal mask;
13rd characteristic point: at the angle of mandible of right side, can detect the pressure produced in this place when wearing oronasal mask;
Younger brother ten four characteristic points: at the temporal bone ear upper limb of right side, can detect fixing band when wearing nose cup and oronasal mask and produce in this place
Raw pressure;
15th characteristic point: upper place on rear side of the temporal bone ear of right side, can detect when wearing nose cup and oronasal mask fixing band in this place
The pressure produced;
16th characteristic point: ear lower end, right side and the midpoint of seventh feature point line, can detect when wearing oronasal mask and fix
The pressure that band produces in this place;
17th characteristic point: contour with fourth feature point above the brow ridge of left side, can detect fixing device pair when wearing nose cup
The pressure of head;
18th characteristic point: at edge keeps left side infraorbital groove on apertura piriformis, pressure when wearing nose cup and oronasal mask can be detected;
19th characteristic point: at the cheekbone of left side, can detect the pressure that when wearing face shield, fixing band produces at cheekbone;
20th characteristic point: 1 centimeters below the infraorbital foramen of left side, on the left of nasal notch, can detect and wear nose cup and oronasal mask
Time upper jaw bone local produce pressure;
21st characteristic point: at the oblique line on the left of lower jaw, can detect the pressure produced in this place when wearing oronasal mask;
22nd characteristic point: at the angle of mandible of left side, can detect the pressure produced in this place when wearing oronasal mask;
23rd characteristic point: at the temporal bone ear upper limb of left side, can detect when wearing nose cup and oronasal mask fixing band in this place
The pressure produced;
20th four characteristic points: upper place on rear side of the temporal bone ear of left side, can detect when wearing nose cup and oronasal mask fixing band at this
The pressure that place produces;
25th characteristic point: ear lower end, left side and the midpoint of seventh feature point line, can detect when wearing oronasal mask solid
Determine the pressure that band produces in this place.
The Advantageous Effects of the present invention is:
(1) present invention is by arranging human body three-dimensional head model, and this three-dimensional head model uses three-decker, when design
Fully taking into account the human body Head And Face soft tissue cushioning effect to stress, thus, the outermost layer of three-dimensional head model is provided with bullet
Property clad, for improve permanent way management system detection verity;
(2) present invention is in view of human body respiration to ventilation and the potential impact of stress, is provided with actively test lung, and this is actively
Test lung includes active inspiration and two kinds of autonomous respiration modes of active expiration, can realize respiratory intensity by the control of processing unit
Control with respiratory frequency;
(3) present invention is by being provided with processing unit, this processing unit respectively with pressure sensing layer, flow transducer and actively
Test lung is connected, and thus, is obtained the pressure valve of human body Head And Face diverse location, this pressure valve and process by pressure transducer
The human body head tolerance threshold arranged in unit compares, and then can evaluate the comfort level of head diverse location;Passed by flow
Sensor obtains the data on flows actually entering actively test lung, this data on flows and the tested invasive ventilation of input in processing unit
The parameter of equipment calculates, and then evaluates the effectiveness of ventilation;Actively test lung is by being connected with processing unit, and then controls
Actively test lung autonomous respiration intensity and respiratory frequency, thus improve the verity of detection data.
Accompanying drawing explanation
Fig. 1 is the structural representation of invasive ventilation equipment permanent way management system of the present invention;
Fig. 2 is the schematic diagram that in human body three-dimensional head model, pressure transducer front is arranged;
Fig. 3 is the schematic diagram that in human body three-dimensional head model, pressure transducer left surface is arranged;
Fig. 4 is the schematic diagram that in human body three-dimensional head model, pressure transducer right flank is arranged;
Fig. 5 is the schematic diagram that in human body three-dimensional head model, pressure transducer is arranged below.
In figure:
01-invasive ventilation equipment permanent way management system 02-hard skeleton layer 03-pressure transducer layer 04-elastic surface
Cladding material layer 05-simulation trachea 06-flow transducer 07-actively test lung 08-processing unit 09-human body three-dimensional head
Portion model 10-tested invasive ventilation equipment
A-fisrt feature point B-second feature point C-third feature point D-fourth feature point
E-fifth feature point F-sixth feature point G-seventh feature point H-eighth feature point
I-ninth feature point J-tenth feature point K-the 11st characteristic point L-the 12nd characteristic point
M-the 13rd characteristic point N-the tenth four characteristic points O-the 15th characteristic point P-the 16th characteristic point
Q-the 17th characteristic point R-the 18th characteristic point S-the 19th characteristic point T-the 20th characteristic point
U-the 21st characteristic point V-the 22nd characteristic point W-the 23rd characteristic point
X-the 20th four characteristic points Y-the 25th characteristic point
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described in further detail.
As it is shown in figure 1, be that the present invention provides a kind of invasive ventilation equipment permanent way management system 01, this system includes human body three
Dimension head model 09, simulation trachea 05, actively test lung 07 and processing unit 08, simulation trachea 05 one end and three-dimensional head model
Mouth and nose passage in 09 is connected, and the other end is connected with actively test lung 07;Three-dimensional head model 09 includes three-decker, from
Interior to being followed successively by outward hard skeleton layer 02, pressure transducer layer 03 and elastomeric overmold layer 04.Simulation trachea 05 is provided with flow and passes
Sensor 06, can detect the actual ventilation entering actively test lung.Pressure transducer layer 03, flow transducer 06 and active mould
Intend lung 07 to be all connected with processing unit 08.
Human body three-dimensional head model 09, by scan method, builds according to the head feature of patient,
Including mouth and nose passage, in order to reach the verity of detection.
The uneven thickness one of hard skeleton layer 02, can change according to the change of face shape.
Elastomeric overmold layer 04 uses plastic material, preferably silica gel, but is not limited to this material, it is possible to select other elastico-plastic
Material.The thickness of elastomeric overmold layer is 0.5-1cm, fits tightly on hard skeleton layer with pressure transducer layer, can be in pressure
Beyond force sensor layer, the stress to head suitably buffers and decomposes, and meets the truth of human body, is conducive to obtaining
The data conformed to the actual situation.
Arranging multiple pressure transducer on pressure transducer layer 03, the position of multiple pressure transducers leads to according to tested noinvasive
Gas equipment 10 contact point different from three-dimensional head model 09 determines, this contact point is skull characteristic point.
As shown in Figure 2-5, according to detection demand, the position that this skull characteristic point is arranged is as follows:
Fisrt feature point A: slightly biased upper place, nasal bone midpoint, can detect pressure when wearing nose cup and oronasal mask;
Second feature point B: anterior nasal spine to the midpoint of front tooth alveolar process, can detect pressure when wearing nose cup;
Third feature point C: mandibular bone both sides mental foramen, along the midpoint of surface line, can detect pressure when wearing oronasal mask
Power;
Fourth feature point D: frontal tuber line midpoint, both sides and the slightly biased upper place, midpoint of glabella line, can detect and wear nose cup
Time the correct pressure of fixing device;
Fifth feature point E: gold point in the range of 45 degree backward in the middle part of parietal bone on central authorities' sagittal plane, can detect and wear face shield
Time fixing band head local produce pressure;
Sixth feature point F: inion, can detect the pressure that when wearing face shield, fixing band produces in head local;
Seventh feature point G: both sides mastoid process, along the midpoint of surface line, can detect when wearing face shield fixing band in head local
The pressure produced;
Eighth feature point H: contour with fourth feature point above the brow ridge of right side, can detect fixing device when wearing nose cup correct
The pressure in portion;
Ninth feature point I: on apertura piriformis at the infraorbital groove on the right side of edge, pressure when wearing nose cup and oronasal mask can be detected;
Tenth feature point J: at the cheekbone of right side, the pressure that when wearing face shield, fixing band produces at cheekbone can be detected;
11st characteristic point K: 1 centimeters below the infraorbital foramen of right side, on the right side of nasal notch, can detect and wear nose cup and oronasal mask
Time upper jaw bone local produce pressure;
12nd characteristic point L: at the oblique line on the right side of mandibular bone, can detect the pressure produced in this place when wearing oronasal mask;
13rd characteristic point M: at the angle of mandible of right side, can detect the pressure produced in this place when wearing oronasal mask;
Younger brother ten four characteristic points N: at the temporal bone ear upper limb of right side, can detect fixing band when wearing nose cup and oronasal mask and produce in this place
Raw pressure;
15th characteristic point O: upper place on rear side of the temporal bone ear of right side, can detect when wearing nose cup and oronasal mask fixing band in this place
The pressure produced;
16th characteristic point P: ear lower end, right side and the midpoint of seventh feature point line, can detect when wearing oronasal mask and fix
The pressure that band produces in this place;
17th characteristic point Q: contour with fourth feature point above the brow ridge of left side, can detect fixing device pair when wearing nose cup
The pressure of head;
18th characteristic point R: at edge keeps left side infraorbital groove on apertura piriformis, pressure when wearing nose cup and oronasal mask can be detected
Power;
19th characteristic point S: at the cheekbone of left side, can detect the pressure that when wearing face shield, fixing band produces at cheekbone;
20th characteristic point T: 1 centimeters below the infraorbital foramen of left side, on the left of nasal notch, can detect and wear nose cup and oronasal mask
Time upper jaw bone local produce pressure;
21st characteristic point U: at the oblique line on the left of lower jaw, can detect the pressure produced in this place when wearing oronasal mask;
22nd characteristic point V: at the angle of mandible of left side, can detect the pressure produced in this place when wearing oronasal mask;
23rd characteristic point W: at the temporal bone ear upper limb of left side, can detect when wearing nose cup and oronasal mask fixing band in this place
The pressure produced;
20th four characteristic points X: upper place on rear side of the temporal bone ear of left side, can detect when wearing nose cup and oronasal mask fixing band at this
The pressure that place produces;
25th characteristic point Y: ear lower end, left side and the midpoint of seventh feature point line, can detect when wearing oronasal mask solid
Determine the pressure that band produces in this place.
Actively test lung 07 includes that controllable piston and piston control performance element, and plunger shaft is connected with simulation trachea, piston
Chamber simulation alveolar space, carrys out lung volume in simulating respiratory movement, and then simulation spontaneous respiration process by controlling piston movement
Change.Actively test lung 07 uses the autonomous respiration of active inspiration and active expiration both of which, can be realized by processing unit
Respiratory intensity and the control of respiratory frequency, thus ensure that actively the rhythmic expansion of test lung 07 is shunk.
Processing unit 08 includes that the first processing module, the first processing module are connected with pressure transducer layer, is used for evaluating
Wearer is the level of comfort of head diverse location when wearing invasive ventilation equipment.By obtaining 25 spies in pressure transducer layer
At levying, pressure transducer detects the force value of head diverse location, and this force value and human body head diverse location are at normal shape
Tolerance value under state contrasts respectively, when arbitrfary point force value is more than tolerance value, gives this position of head " uncomfortable "
Evaluate, can be used for the improvement of ventilation interface arrangement, otherwise then give the evaluation of this position of head " comfortable ", interface dress of ventilating is described
Put the requirement meeting use.
Processing unit 08 includes that the second processing module, the second processing module are connected with flow transducer, is used for detecting tested
The effectiveness of invasive ventilation equipment ventilation.Actually entered with obtaining flow transducer by the parameter inputting tested invasive ventilation machine
Data on flows in lung, calculates with this two item data and then evaluates the effectiveness of ventilation.
Processing unit 08 includes that the 3rd processing module, the 3rd processing module are connected with actively test lung, is used for controlling actively
Test lung respiratory intensity and respiratory frequency, it is achieved the actively rhythmic autonomous respiration of test lung.
Processing unit 08 comprehensive Comfort Evaluation can provide overall work efficiency scoring with ventilation effectiveness assessment.
In sum, the invasive ventilation equipment permanent way management system that the present invention constructs, have at detection invasive ventilation equipment
The comfortableness using invasive ventilation equipment is evaluated while effect property.This system fully takes into account human body Head And Face soft tissue to stress
Cushioning effect, use three-decker design human body head threedimensional model, it is contemplated that autonomous respiration is to ventilation and stress potential
Impact, system uses actively test lung to realize including active inspiration and the autonomous respiration of active expiration both of which.Noinvasive is led to
Gas equipment is connected with the three-dimensional human head model of native system, sets noninvasive ventilation mode, parameter and invasive ventilation and sets
The active test lung control model of standby permanent way management system, detect during carrying out invasive ventilation simultaneously effective ventilation flow and
Head And Face multi-point partial pressure, is compared to pass judgment on effectiveness, by multi-point partial by the ventilation flow rate detected and setting value
Pressure contrasts with proof pressure limit value to determine comfortableness, and then realizes the overall merit to invasive ventilation equipment ergonomics.One
Aspect, can help to design invasive ventilation interface arrangement so that patient feels comfortably cool as much as possible for patient personalized;Another
Aspect, it is also possible to estimation air leakage evaluates the effectiveness of ventilation, finally can also lead to noinvasive from the individual state of patient
Gas equipment does a permanent way management.
The invasive ventilation equipment permanent way management system of the present invention, during use, fills the interface of tested invasive ventilation equipment
Put and be worn on three-dimensional human head model;Start actively test lung, according to required breathing pattern, its parameter is configured;
Start tested invasive ventilation equipment, the relevant parameter of its ventilating mode is set;Processing unit will be adopted according in 25 characteristic points
The data of collection carry out Comfort Evaluation to tested invasive ventilation machine.Simulation trachea at place flow transducer by actual enter
The gas flow data entering lung sends to processing unit, according to the ventilation flow rate of the invasive ventilation parameter computational theory of input, uses
This two item data calculates and then evaluates the effectiveness of ventilation.Finally provide comprehensive permanent way management.
The invasive ventilation equipment permanent way management system of the present invention is not limited to above-mentioned detailed description of the invention, people in the art
Member draws other embodiment according to technical scheme, also belongs to the technological innovation scope of the present invention.
Claims (9)
1. an invasive ventilation equipment permanent way management system, including human body three-dimensional head model (09), simulation trachea (05), actively
Test lung (07) and processing unit (08), is characterized in that: in described simulation trachea (05) one end and three-dimensional head model (09)
Mouth and nose passage is connected, and the other end is connected with actively test lung (07);Described three-dimensional head model includes the most successively
Hard skeleton layer, pressure transducer layer and elastomeric overmold layer;Described simulation trachea (05) is provided with for detecting entrance actively mould
Intend the flow transducer (06) of lung (07) interior actual flow;Described pressure transducer layer (03), flow transducer (06) and active
Test lung (07) all with for detect Head And Face diverse location pressurized situation, enter actively test lung actual airflow amount situation and
The processing unit (08) controlling actively test lung autonomous respiration is connected.
2. a kind of invasive ventilation equipment permanent way management system as claimed in claim 2, is characterized in that: described elastomeric overmold layer
(04) use elastic plastic material, be fitted tightly on hard skeleton layer (02) and pressure transducer layer (03).
3. a kind of invasive ventilation equipment permanent way management system as claimed in claim 1 or 2, is characterized in that: described active is simulated
Lung (07) includes that controllable piston and piston control performance element, and plunger shaft is connected with simulation trachea, and plunger shaft simulation alveolar space is logical
Cross control piston movement and carry out the change of lung volume in simulating respiratory movement, and then simulation spontaneous respiration process.
4. a kind of invasive ventilation equipment permanent way management system as claimed in claim 3, is characterized in that: described active test lung
(07) active inspiration and two kinds of autonomous respiration modes of active expiration are included.
5. a kind of invasive ventilation equipment permanent way management system as claimed in claim 4, is characterized in that: described processing unit (08)
Including the first processing module, the first processing module is connected with pressure transducer layer (03), is used for evaluating wearer and is wearing nothing
The level of comfort of head diverse location during wound aeration equipment.
6. a kind of invasive ventilation equipment permanent way management system as claimed in claim 4, is characterized in that: described processing unit (08)
Including the second processing module, the second processing module is connected with flow transducer (06), is used for detecting tested invasive ventilation equipment
(10) effectiveness ventilated.
7. a kind of invasive ventilation equipment permanent way management system as claimed in claim 4, is characterized in that: described processing unit (08)
Including the 3rd processing module, the 3rd processing module is connected with actively test lung (07), is used for controlling actively test lung (07) and breathes
Intensity and respiratory frequency, it is achieved actively test lung (07) rhythmic autonomous respiration.
8. a kind of invasive ventilation equipment permanent way management system as described in any one of claim 5-7, is characterized in that: described pressure
Arranging multiple pressure transducer on sensor layer (03), the position of multiple pressure transducers is according to tested invasive ventilation equipment (10)
It is set from three-dimensional head model (09) different contact site, i.e. sets at skull characteristic point.
9. a kind of invasive ventilation equipment permanent way management system as claimed in claim 8, is characterized in that: described skull characteristic point bag
Include:
Fisrt feature point (A): slightly biased upper place, nasal bone midpoint, can detect pressure when wearing nose cup and oronasal mask;
Second feature point (B): anterior nasal spine to the midpoint of front tooth alveolar process, can detect pressure when wearing nose cup;
Third feature point (C): mandibular bone both sides mental foramen, along the midpoint of surface line, can detect pressure when wearing oronasal mask;
Fourth feature point (D): the slightly biased upper place, midpoint of frontal tuber line midpoint, both sides and glabella line, can detect when wearing nose cup
The correct pressure of fixing device;
Fifth feature point (E): gold point in the range of 45 degree backward in the middle part of parietal bone on central authorities' sagittal plane, can detect when wearing face shield
The pressure that fixing band produces in head local;
Sixth feature point (F): inion, can detect the pressure that when wearing face shield, fixing band produces in head local;
Seventh feature point (G): both sides mastoid process, along the midpoint of surface line, can detect fixing band when wearing face shield and produce in head local
Raw pressure;
Eighth feature point (H): contour with fourth feature point above the brow ridge of right side, can detect when wearing nose cup fixing device to head
Pressure;
Ninth feature point (I): on apertura piriformis at the infraorbital groove on the right side of edge, pressure when wearing nose cup and oronasal mask can be detected;
Tenth feature point (J): at the cheekbone of right side, can detect the pressure that when wearing face shield, fixing band produces at cheekbone;
11st characteristic point (K): 1 centimeters below the infraorbital foramen of right side, on the right side of nasal notch, can detect when wearing nose cup and oronasal mask
At the pressure that upper jaw bone local produces;
12nd characteristic point (L): at the oblique line on the right side of lower jaw, can detect the pressure produced in this place when wearing oronasal mask;
13rd characteristic point (M): at the angle of mandible of right side, can detect the pressure produced in this place when wearing oronasal mask;
Younger brother ten four characteristic points (N): at the temporal bone ear upper limb of right side, can detect fixing band when wearing nose cup and oronasal mask and produce in this place
Pressure;
15th characteristic point (O): upper place on rear side of the temporal bone ear of right side, can detect fixing band when wearing nose cup and oronasal mask and produce in this place
Raw pressure;
16th characteristic point (P): ear lower end, right side and the midpoint of seventh feature point line, can detect fixing band when wearing oronasal mask
The pressure produced in this place;
17th characteristic point (Q): contour with fourth feature point above the brow ridge of left side, can detect fixing device when wearing nose cup correct
The pressure in portion;
18th characteristic point (R): at edge keeps left side infraorbital groove on apertura piriformis, pressure when wearing nose cup and oronasal mask can be detected;
19th characteristic point (S): at the cheekbone of left side, can detect the pressure that when wearing face shield, fixing band produces at cheekbone;
20th characteristic point (T): 1 centimeters below the infraorbital foramen of left side, on the left of nasal notch, can detect when wearing nose cup and oronasal mask
At the pressure that upper jaw bone local produces;
21st characteristic point (U): at the oblique line on the left of lower jaw, can detect the pressure produced in this place when wearing oronasal mask;
22nd characteristic point (V): at the angle of mandible of left side, can detect the pressure produced in this place when wearing oronasal mask;
23rd characteristic point (W): at the temporal bone ear upper limb of left side, can detect fixing band when wearing nose cup and oronasal mask and produce in this place
Raw pressure;
20th four characteristic points (X): upper place on rear side of the temporal bone ear of left side, can detect when wearing nose cup and oronasal mask fixing band in this place
The pressure produced;
25th characteristic point (Y): ear lower end, left side and the midpoint of seventh feature point line, can detect when wearing oronasal mask and fix
The pressure that band produces in this place.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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