CN102944371B - A kind of detection system for noninvasive ventilation interface - Google Patents
A kind of detection system for noninvasive ventilation interface Download PDFInfo
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- CN102944371B CN102944371B CN201210438841.1A CN201210438841A CN102944371B CN 102944371 B CN102944371 B CN 102944371B CN 201210438841 A CN201210438841 A CN 201210438841A CN 102944371 B CN102944371 B CN 102944371B
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Abstract
The invention belongs to a kind of detection system for noninvasive ventilation interface (01), be specifically related to one in conjunction with human body head Three Dimensions Structure to invasive ventilation used interface---nose cup, oronasal mask, full facepiece mask etc. (08) leak gas and the detection system of comfort level test and appraisal.Its system comprises, one can produce the detection source of the gas (02) of specifying ventilation waveform, one can be detected the stressed human body head three-dimensional model (03) in surface, one be connected with human head model and be placed with simulation tracheae (05) and the lung model (04) of sensor (06), and one can be carried out leaking gas and the microprocessing unit (07) of Head And Face level of comfort, by comparing source of the gas and preset ventilation waveform and the actual detection waveform of trachea model being estimated and leaked gas, wearing face shield by multiple pressure transducer measurements that head model is arranged is head diverse location pressure, by carrying out contrasting with Human Tolerance threshold value thus passing judgment on the comfort level of face shield.
Description
Technical field
The invention belongs to a kind of detection system for noninvasive ventilation interface, be specifically related to detection that invasive ventilation interface (nose cup, oronasal mask, face shield etc.) is leaked gas and the test and appraisal of comfort level of wearing invasive ventilation interface.
Background technology
Respiratory disease incidence rises year by year, and respiratory diseases mortality shelter has the 4th of disease.Mechanical ventilation is the important means that treatment respiratory disease realizes life support, and invasive ventilation is wherein used for the common respiratory disease such as chronic obstructive pulmonary disease, acute pulmonary edema and sleep apnea syndrome.Compared with Invasive vent ilation, invasive ventilation, without the need to trachea cannula, is worn nose cup, oronasal mask, face shield etc. by patient and is connected with interface units such as lung ventilators, avoid the wound to patient, also reduce the probability of infection.But gas leakage and patient tolerance are also the problems that invasive ventilation must solve.The interface shape of current invasive ventilation is various, has nose cup, oronasal mask, face shield etc., and by the dissimilar face that is fastened on, each link produces the pressure of response to head, produces patient and do not tolerate when pressure is excessive.Sometimes producing gap gas leakage between skin of face and invasive ventilation interface to prevent, just strengthening connecting stationary installation, the discomfort worn may be produced thus, reduce the tolerance of patient.How to evaluate invasive ventilation interface, and carry out being suitable for individual selection being have problem to be solved.The present invention constructs a detection system for noninvasive ventilation interface, detect while can realizing interface air leakage and comfortable wearing degree, invasive ventilation interface is worn on three-dimensional human head model, and this systems axiol-ogy source of the gas is connected with invasive ventilation interface, patients head's 3-D scanning is utilized to produce head model, the sensor of joint head part cloth can detect head stressing conditions everywhere when wearing invasive ventilation interface, simultaneously by Determination source of the gas and actual flow and the pressure of simulating tracheae place, the degree of leaking gas when can estimate and wear this interface, this invasive ventilation interface air feed usefulness is worn in evaluation, and then realization is to the comprehensive evaluation of invasive ventilation interface and individualized selection.
Summary of the invention
The present invention will build a kind of detection system for noninvasive ventilation interface and detection method thereof, this system can detect gas leakage degree when wearing different invasive ventilation interface and level of comfort according to the head feature of individual patients, can be used for the design instructing invasive ventilation interface, the selection of interface accessory when also can be used for individual Long-Time Service invasive ventilation.
The technical scheme that the present invention is adopted for achieving the above object is:
A kind of detection system for noninvasive ventilation interface, comprise the controlled detection source of the gas that can produce and specify waveform, a three-dimensional human head model with surface pressure sensor, human respiratory model and the microprocessor for detection control, it is characterized in that, described three-dimensional human head model surface is distributed with pressure transducer, flow and pressure transducer is furnished with in described human respiratory model, described detection source of the gas can provide the air feed of two kinds of different modes, and described microprocessor can realize the analysis to invasive ventilation interface air feed usefulness and comfortable wearing degree.
Further, the shape of above-mentioned three-dimensional human head model can be obtained by actual patient head 3-D scanning, thus realizes the evaluation to individual comfortable wearing degree, and the selection of interface.
Further, above-mentioned three-dimensional human head model surface of stating is distributed with multiple pressure transducer, and time when can be used for detecting invasive ventilation owing to wearing the interface arrangements such as face shield, each local pressure situation of head is to analyze the level of comfort of invasive ventilation interface.
Further again, for detection demand, according to various respiratory machine pipeline and patient airway interface shape (comprising full facepiece mask, face shield, nose cup etc.), pressure transducer is positioned over following face feature point place:
Unique point 1: nasal bone, near nasion end, can detect pressure when wearing nose cup and oronasal mask;
Unique point 2: nose lower lip is located in people, can detect pressure when wearing nose cup;
Unique point 3: chin upperlip point, can detect and wear oronasal mask;
Unique point 4: forehead central point, can detect the pressure of stationary installation when wearing nose cup to head;
Unique point 5: in central sagittal plane, the gold point of the 45 ° of scopes in crown portion and rear portion, can survey the pressure that when wearing face shield, fixed band produces in head local;
Unique point 6: two ear top line and the sagittal intersection point of head, can survey the pressure that when wearing face shield, fixed band produces in head local;
Unique point 7: two ear bottom line and the sagittal intersection point of head, can survey the pressure that when wearing face shield, fixed band produces in head local;
Unique point 8: with unique point 4 contour point above the brow ridge of right side, the pressure of stationary installation when wearing nose cup to head can be detected;
Unique point 9:, near nasal bone place, can detect pressure when wearing nose cup and oronasal mask on the wing of nose of right side now;
Unique point 10: under canthus, right side cheekbone place, can survey the pressure that when wearing face shield, fixed band produces in face local;
Unique point 11: 1cm place outside the cheek wing of nose of right side, can detect when wearing nose cup and oronasal mask at the pressure that face local produces;
Unique point 12: cheek place outside the corners of the mouth of right side, can detect when wearing oronasal mask at the pressure that face local produces;
Unique point 13: angle of mandible place, right side, can detect when wearing oronasal mask at the pressure that face local produces;
Unique point 14: right side temporal bone is positioned at ear upper limb place, can detect the pressure that when wearing nose cup and oronasal mask, fixed band produces in head local;
Unique point 15: right side temporal bone is positioned at upper place on rear side of ear, can detect the pressure that when wearing nose cup and oronasal mask, fixed band produces in head local;
Unique point 16: the mid point of ear lower end, right side and unique point 7 line, can detect the pressure that when wearing oronasal mask, fixed band produces in head local;
Unique point 17: with unique point 4 contour point above the brow ridge of left side, the pressure of stationary installation when wearing nose cup to head can be detected;
Unique point 18:, near nasal bone place, can detect pressure when wearing nose cup and oronasal mask on the wing of nose of left side now;
Unique point 19: under canthus, left side cheekbone place, can survey the pressure that when wearing face shield, fixed band produces in face local;
Unique point 20: 1cm place outside the cheek wing of nose of left side, can detect when wearing nose cup and oronasal mask at the pressure that face local produces;
Unique point 21: cheek place outside the corners of the mouth of left side, can detect when wearing oronasal mask at the pressure that face local produces;
Unique point 22: angle of mandible place, left side, can detect when wearing oronasal mask at the pressure that face local produces;
Unique point 23: left side temporal bone is positioned at ear upper limb place, can detect the pressure that when wearing nose cup and oronasal mask, fixed band produces in head local;
Unique point 24: left side temporal bone is positioned at upper place on rear side of ear, can detect the pressure that when wearing nose cup and oronasal mask, fixed band produces in head local;
Unique point 25: the mid point of ear lower end, left side and unique point 7 line, can detect the pressure that when wearing oronasal mask, fixed band produces in head local.
Further, detection system described above carries detection source of the gas, and detection source of the gas comprises control system can produce appointment ventilation waveform, comprising realizing level pressure ventilation and constant current ventilation.
Further, human body head three-dimensional model described above is connected with simulated lung through simulation tracheae, and places flow and pressure transducer, for detecting the actual waveform of lung ventilation in simulation tracheae stage casing.
Further, this system comprises a microprocessing unit as mentioned above, invasive ventilation interface (comprising nose cup, oronasal mask, full facepiece mask etc.) level of comfort can be evaluated, this microprocessing unit is by obtaining the force value that in human body head three-dimensional model, 25 unique point place sensors detect, contrast with the tolerance value under human body head normal condition, when arbitrfary point force value is greater than tolerance value, give the evaluation of " uncomfortable ", when force value a little be all less than tolerance value time, give the evaluation of " comfortable ".
Further, this system comprises a microprocessing unit as mentioned above, the gas leakage degree of invasive ventilation interface (comprising nose cup, oronasal mask, full facepiece mask etc.) can be evaluated, this microprocessing unit detects the ventilation waveform that provides of source of the gas and actual waveform that sensor is surveyed by obtaining to carry, and carry out the contrast of actual ventilation waveform and actual waveform, and then estimation gas leakage degree, pass judgment on air feed usefulness.
Accompanying drawing explanation
Fig. 1 System's composition schematic diagram
The positive face sensor of Fig. 2 human body head three-dimensional model places schematic diagram
Fig. 3 human body head three-dimensional model side sensor places schematic diagram, (a) right side, (b) left side
On rear side of Fig. 4 human body head three-dimensional model, schematic diagram placed by square sensor
Fig. 5 system uses schematic diagram, description of reference numerals: 01-detection system for noninvasive ventilation interface, the controlled detection source of the gas of 02-, 03-three-dimensional human head model, 04-simulated lung, 05-simulates tracheae, 06-flow and pressure transducer, 07-microprocessing unit, 08-invasive ventilation interface
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail.
A kind of detection system for noninvasive ventilation interface comprises as shown in Figure 1: can produce the controlled detection source of the gas of specifying waveform, a three-dimensional human head model with surface pressure sensor, comprises simulation tracheae and the human respiratory model of simulated lung and the microprocessor for detection control.Wherein:
(1) system builds a three-dimensional head model by means such as 3-D scannings according to the head feature of patient's reality, is connected by three-dimensional human head model through simulation tracheae with simulated lung.
(2) as in Figure 2-4, placement force sensor in 25 unique points of three-dimensional head model:
Unique point 1: nasal bone, near nasion end, can detect pressure when wearing nose cup and oronasal mask;
Unique point 2: nose lower lip is located in people, can detect pressure when wearing nose cup;
Unique point 3: chin upperlip point, can detect and wear oronasal mask;
Unique point 4: forehead central point, can detect the pressure of stationary installation when wearing nose cup to head;
Unique point 5: in central sagittal plane, the gold point of the 45 ° of scopes in crown portion and rear portion, can survey the pressure that when wearing face shield, fixed band produces in head local;
Unique point 6: two ear top line and the sagittal intersection point of head, can survey the pressure that when wearing face shield, fixed band produces in head local;
Unique point 7: two ear bottom line and the sagittal intersection point of head, can survey the pressure that when wearing face shield, fixed band produces in head local;
Unique point 8: with unique point 4 contour point above the brow ridge of right side, the pressure of stationary installation when wearing nose cup to head can be detected;
Unique point 9:, near nasal bone place, can detect pressure when wearing nose cup and oronasal mask on the wing of nose of right side now;
Unique point 10: under canthus, right side cheekbone place, can survey the pressure that when wearing face shield, fixed band produces in face local;
Unique point 11: 1cm place outside the cheek wing of nose of right side, can detect when wearing nose cup and oronasal mask at the pressure that face local produces;
Unique point 12: cheek place outside the corners of the mouth of right side, can detect when wearing oronasal mask at the pressure that face local produces;
Unique point 13: angle of mandible place, right side, can detect when wearing oronasal mask at the pressure that face local produces;
Unique point 14: right side temporal bone is positioned at ear upper limb place, can detect the pressure that when wearing nose cup and oronasal mask, fixed band produces in head local;
Unique point 15: right side temporal bone is positioned at upper place on rear side of ear, can detect the pressure that when wearing nose cup and oronasal mask, fixed band produces in head local;
Unique point 16: the mid point of ear lower end, right side and unique point 7 line, can detect the pressure that when wearing oronasal mask, fixed band produces in head local;
Unique point 17: with unique point 4 contour point above the brow ridge of left side, the pressure of stationary installation when wearing nose cup to head can be detected;
Unique point 18:, near nasal bone place, can detect pressure when wearing nose cup and oronasal mask on the wing of nose of left side now;
Unique point 19: under canthus, left side cheekbone place, can survey the pressure that when wearing face shield, fixed band produces in face local;
Unique point 20: 1cm place outside the cheek wing of nose of left side, can detect when wearing nose cup and oronasal mask at the pressure that face local produces;
Unique point 21: cheek place outside the corners of the mouth of left side, can detect when wearing oronasal mask at the pressure that face local produces;
Unique point 22: angle of mandible place, left side, can detect when wearing oronasal mask at the pressure that face local produces;
Unique point 23: left side temporal bone is positioned at ear upper limb place, can detect the pressure that when wearing nose cup and oronasal mask, fixed band produces in head local;
Unique point 24: left side temporal bone is positioned at upper place on rear side of ear, can detect the pressure that when wearing nose cup and oronasal mask, fixed band produces in head local;
Unique point 25: the mid point of ear lower end, left side and unique point 7 line, can detect the pressure that when wearing oronasal mask, fixed band produces in head local;
By the sensor at above-mentioned 25 unique point places detect use invasive ventilation interface time each position of head stressing conditions F
i, and all stressing conditions are reached systematic microprocessor, by F
iwith tolerance value F
tcompare, work as F
i> F
ttime, point out uncomfortable, and according to F
t-F
i/ F
tevaluate level of comfort, also can according to max (F
i) position that occurs to be to improve the structure of invasive ventilation joint connecting device.
(3) as shown in Figure 5, when a kind of detection system for noninvasive ventilation interface uses, invasive ventilation interface is worn on three-dimensional head model, the inlet end of invasive ventilation interface is connected with the air supply opening detecting source of the gas and seals.
(4) start up system, detect source of the gas and the ventilating mode comprising level pressure and constant volume 2 kinds appointment waveform can be provided, detect source of the gas to be connected with systematic microprocessor, pressure waveform P (t) of ventilating mode and flow Flow (t) can be sent to microprocessor.
(5) sensor placed at simulation tracheae place as shown in Figure 1, shown in Figure 5 can detect the actual stream pressure P entering lung
l(t) and air flow rate Flow
l(t), and by P
l(t) and Flow
lt () is sent to systematic microprocessor.By ∫ Flow in compare cycle
l(t) dt and ∫ Flow (t) dt, air leakage Δ V=∫ Flow (t) the dt-∫ Flow that estimation invasive ventilation interface produces
l(t) dt, and according to ∫ FLow
l(t) dt/ ∫ Flow (t) dt and P
lt ()/P (t) passes judgment on air feed usefulness.
Claims (7)
1. a detection system for noninvasive ventilation interface (01), comprise the controlled detection source of the gas (02) that can produce and specify waveform, a three-dimensional human head model (03) with surface pressure sensor, human respiratory model (04) (05) and the microprocessor (07) for detection control, it is characterized in that, described three-dimensional human head model surface is distributed with pressure transducer (1-25), flow and pressure transducer (06) is furnished with in described human respiratory model, described detection source of the gas provides the air feed of two kinds of different modes, described microprocessor can realize the analysis to invasive ventilation interface air feed usefulness and comfortable wearing degree.
2. a kind of detection system for noninvasive ventilation interface (01) according to claim 1, is characterized in that, described three-dimensional human head model (03) shape is obtained by actual patient head 3-D scanning.
3. a kind of detection system for noninvasive ventilation interface (01) according to claim 1, it is characterized in that, described three-dimensional human head model (03) surface distributed has multiple pressure transducer, time during for detecting invasive ventilation owing to wearing face shield, oronasal mask, nose cup interface arrangement, each local pressure situation of head is to analyze the level of comfort of invasive ventilation interface, for detection demand, according to various respiratory machine pipeline and patient airway interface shape, comprise face shield, oronasal mask, nose cup, pressure transducer is positioned over following face feature point place:
Unique point 1: nasal bone, near nasion end, detects pressure when wearing nose cup and oronasal mask;
Unique point 2: nose lower lip is located in people, detects pressure when wearing nose cup;
Unique point 3: chin upperlip point, detects pressure when wearing oronasal mask;
Unique point 4: forehead central point, detects stationary installation when wearing nose cup to the pressure of head;
Unique point 5: in central sagittal plane, the gold point of the 45 ° of scopes in crown portion and rear portion, detects the pressure that when wearing face shield, fixed band produces in head local;
Unique point 6: two ear top line and the sagittal intersection point of head, detect the pressure that when wearing face shield, fixed band produces in head local;
Unique point 7: two ear bottom line and the sagittal intersection point of head, detect the pressure that when wearing face shield, fixed band produces in head local;
Unique point 8: with unique point 4 contour point above the brow ridge of right side, detects stationary installation when wearing nose cup to the pressure of head;
Unique point 9:, near nasal bone place, detects pressure when wearing nose cup and oronasal mask on the wing of nose of right side now;
Unique point 10: under canthus, right side cheekbone place, detects the pressure that when wearing face shield, fixed band produces in face local;
Unique point 11: 1cm place outside the cheek wing of nose of right side, detects when wearing nose cup and oronasal mask at the pressure that face local produces;
Unique point 12: cheek place outside the corners of the mouth of right side, detects when wearing oronasal mask at the pressure that face local produces;
Unique point 13: angle of mandible place, right side, detects when wearing oronasal mask at the pressure that face local produces;
Unique point 14: right side temporal bone is positioned at ear upper limb place, detects the pressure that when wearing nose cup and oronasal mask, fixed band produces in head local;
Unique point 15: right side temporal bone is positioned at upper place on rear side of ear, detects the pressure that when wearing nose cup and oronasal mask, fixed band produces in head local;
Unique point 16: the mid point of ear lower end, right side and unique point 7 line, detects the pressure that when wearing oronasal mask, fixed band produces in head local;
Unique point 17: with unique point 4 contour point above the brow ridge of left side, detects stationary installation when wearing nose cup to the pressure of head;
Unique point 18:, near nasal bone place, detects pressure when wearing nose cup and oronasal mask on the wing of nose of left side now;
Unique point 19: under canthus, left side cheekbone place, detects the pressure that when wearing face shield, fixed band produces in face local;
Unique point 20: 1cm place outside the cheek wing of nose of left side, detects when wearing nose cup and oronasal mask at the pressure that face local produces;
Unique point 21: cheek place outside the corners of the mouth of left side, detects when wearing oronasal mask at the pressure that face local produces;
Unique point 22: angle of mandible place, left side, detects when wearing oronasal mask at the pressure that face local produces;
Unique point 23: left side temporal bone is positioned at ear upper limb place, detects the pressure that when wearing nose cup and oronasal mask, fixed band produces in head local;
Unique point 24: left side temporal bone is positioned at upper place on rear side of ear, detects the pressure that when wearing nose cup and oronasal mask, fixed band produces in head local;
Unique point 25: the mid point of ear lower end, left side and unique point 7 line, detects the pressure that when wearing oronasal mask, fixed band produces in head local.
4. a kind of detection system for noninvasive ventilation interface (01) as claimed in claim 1, it is characterized in that, this detection system carries controlled detection source of the gas (02), detect source of the gas and comprise control system, can produce and specify ventilation waveform, comprising realizing level pressure ventilation and constant current ventilation.
5. a kind of detection system for noninvasive ventilation interface (01) as claimed in claim 1, it is characterized in that, three-dimensional human head model (03) is connected with simulated lung (04) through simulation tracheae (05), and place flow and pressure transducer (06), for detecting the actual waveform of lung ventilation in simulation tracheae (05) stage casing.
6. a kind of detection system for noninvasive ventilation interface (01) as claimed in claim 1, it is characterized in that, this system comprises a microprocessor (07), invasive ventilation interface can be evaluated---comprise face shield, oronasal mask, the level of comfort of nose cup, the force value that this microprocessor detects by obtaining three-dimensional human head model (03) surface distributed pressure transducer, contrast with the tolerance value under human body head normal condition, when arbitrfary point force value is greater than tolerance value, give the evaluation of " uncomfortable ", when force value a little be all less than tolerance value time, give the evaluation of " comfortable ".
7. a kind of detection system for noninvasive ventilation interface (01) as claimed in claim 1, it is characterized in that, this system comprises a microprocessor (07), invasive ventilation interface (08) can be evaluated---comprise the gas leakage degree of face shield, oronasal mask, nose cup, this microprocessor by obtain in the ventilation waveform that provides of controlled detection source of the gas (02) and human respiratory model flow and pressure transducer (06) survey actual waveform, go forward side by side work wave shape with survey the contrast of actual waveform, and then estimation gas leakage degree, pass judgment on air feed usefulness.
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| WO2014180739A1 (en) | 2013-05-10 | 2014-11-13 | Koninklijke Philips N.V. | Patient interface device selection system and method based on three-dimensional modelling |
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| RU2677096C2 (en) * | 2013-05-10 | 2019-01-15 | Конинклейке Филипс Н.В. | Method and system of selection of 3-d patient interface devices |
| CN103977492B (en) * | 2014-05-29 | 2016-04-27 | 北京航空航天大学 | A kind of method controlling ventilation air leakage based on pressure waveform estimated capacity |
| CN104700698B (en) * | 2015-03-20 | 2017-03-22 | 四川林大全科技有限公司 | Anthropomorphic phantom manufacturing method based on radiation detection |
| CN106327982A (en) * | 2016-08-29 | 2017-01-11 | 北京航空航天大学 | Efficiency evaluation system for noninvasive ventilation equipment |
| CN107860498B (en) * | 2017-11-08 | 2020-04-17 | 山西新华化工有限责任公司 | Breathing mask wearing pressure testing device |
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