CN102944371A - Detection system for noninvasive ventilation interface - Google Patents
Detection system for noninvasive ventilation interface Download PDFInfo
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- CN102944371A CN102944371A CN2012104388411A CN201210438841A CN102944371A CN 102944371 A CN102944371 A CN 102944371A CN 2012104388411 A CN2012104388411 A CN 2012104388411A CN 201210438841 A CN201210438841 A CN 201210438841A CN 102944371 A CN102944371 A CN 102944371A
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Abstract
The invention belongs to a detection system (01) for a noninvasive ventilation interface and particularly relates to a detection system for evaluating the air leakage and the comfortableness of interfaces such as a nasal mask, a mouth-nose mask and a full-face mask (08) for noninvasive ventilation by combining three-dimensional structure characteristics of human heads. The detection system comprises a detection air source (02), a human head three-dimensional model (03), a simulation trachea (05), a lung model (04) and a micro processing unit (07), wherein the detection air source (02) can be used for generating a designated ventilation waveform; the human head three-dimensional model (03) can be used for detecting the surface stress; the simulation trachea (05) and the lung model (04) are connected with the human head three-dimensional model and allow sensors (06) to be placed; and the micro processing unit (07) can be used for evaluating the air leakage and the comfortableness of the head and the face. The air leakage is detected by comparing the preset ventilation waveform of the air source with the actually-detected waveform of the trachea model, and the stresses of the mask worn at different positions of the head are measured by a plurality of pressure sensors arranged on the head model and are compared with a human tolerance threshold, and thus the comfortableness of the mask is judged.
Description
Technical field
The invention belongs to a kind ofly without wound ventilation interface detecting system, be specifically related to detection and the test and appraisal of wearing without the comfort level of wound ventilation interface without wound ventilation interface (nose cup, oronasal mask, face shield etc.) gas leakage.
Background technology
The respiratory disease incidence rises year by year, and the respiratory diseases mortality shelter has the 4th of disease.Mechanical ventilation is that the treatment respiratory disease realizes the important means that life is supported, nothing wound multipurpose venting wherein is in common respiratory diseases such as chronic obstructive pulmonary disease, acute pulmonary edema and sleep apnea syndromes.Compare with wound ventilation is arranged, need not trachea cannula without the wound ventilation, is connected by interface units such as patient wear nose cup, oronasal mask, face shield etc. and lung ventilators, avoided the wound to the patient, also reduced the probability of infection.But gas leakage also is without wound ventilation problem needing to overcome with patient's tolerance.Various without the interface shape of wound ventilation at present, nose cup, oronasal mask, face shield etc. are arranged, by the dissimilar faces that is fastened on, each link produces the pressure of response to head, produces the patient when pressure is excessive and does not tolerate.Sometimes in order to prevent skin of face and without producing slit gas leakage between wound ventilation interface, just to strengthen connecting stationary installation, may produce the discomfort of wearing thus, reduce patient's tolerance.How to estimate without wound ventilation interface, and to be suitable for individual selection be problems to be solved.The present invention has made up one without wound ventilation interface detecting system, detect when can realize interface air leakage and comfortable wearing degree, to be worn on the three-dimensional head model without wound ventilation interface, and this system detected source of the gas and link to each other without wound ventilation interface, utilize patient's head 3-D scanning to produce head model, the sensor of joint head part cloth can detect head stressing conditions everywhere when wearing without wound ventilation interface, simultaneously by actual flow and the pressure of Determination source of the gas with simulation tracheae place, can estimate the degree of leaking gas when wearing this interface, evaluation is worn this without wound ventilation interface air feed usefulness, and then realizes comprehensive evaluation and personalized selection the without wound ventilation interface.
Summary of the invention
The present invention will make up a kind of nothing wound ventilation interface detecting system and detection method thereof, this system can detect according to the head feature of individual patients gas leakage degree and the level of comfort when wearing different nothing wound ventilation interface, can be used for instructing the design without creating the ventilation interface, also can be used for the selection of interface accessory when individuality is long-term to use the nothing wound to ventilate.
The technical scheme that the present invention adopts for achieving the above object is:
A kind of without wound ventilation interface detecting system, comprise and to produce the controlled detection source of the gas of specifying waveform, 3 D human body head model with the surface pressing sensor, the human respiratory model and for detection of control microprocessor, it is characterized in that, described 3 D human body head model surface distributed has pressure transducer, be furnished with flow and pressure transducer in the 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 be realized the analysis without wound ventilation interface air feed usefulness and comfortable wearing degree.
Further, the shape of above-mentioned 3 D human body head model can be obtained by actual patient head 3-D scanning, thereby realizes the evaluation to individual comfortable wearing degree, and the selection of interface.
Further, the above-mentioned 3 D human body head model surface distributed of stating has a plurality of pressure transducers, when can be used for detecting without the wound ventilation since when wearing the interface arrangement such as face shield each local pressure situation of head to analyze the level of comfort without wound ventilation interface.
Further again, for the 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 can detect the pressure when wearing nose cup and oronasal mask near nasion end;
Unique point 2: locate among the people on the nose lower lip, can detect the pressure when wearing nose cup;
Unique point 3: chin upperlip point, can detect and wear oronasal mask;
Unique point 4: the forehead central point, can detect stationary installation when wearing nose cup to the pressure of head;
Unique point 5: on the central sagittal plane, the gold point of 45 ° of scopes of crown section and rear portion can be surveyed the pressure that fixed band produces in the head part when wearing face shield;
Unique point 6: two ear top line and the sagittal intersection point of head can be surveyed the pressure that fixed band produces in the head part when wearing face shield;
Unique point 7: two ear bottoms line and the sagittal intersection point of head can be surveyed the pressure that fixed band produces in the head part when wearing face shield;
Unique point 8: right side brow ridge top and unique point 4 contour points, can detect stationary installation when wearing nose cup to the pressure of head;
Unique point 9: now, near the nasal bone place, can detect the pressure when wearing nose cup and oronasal mask on the wing of nose of right side;
Unique point 10: under the canthus, right side the cheekbone place, can survey the pressure that fixed band produces in the face part when wearing face shield;
Unique point 11: 1cm place, the right side cheek wing of nose outside, can detect when wearing nose cup and oronasal mask at the local pressure that produces of face;
Unique point 12: cheek place, the right side corners of the mouth outside, can detect when wearing oronasal mask at the local pressure that produces of face;
Unique point 13: right side angle of mandible place, can detect when wearing oronasal mask at the local pressure that produces of face;
Unique point 14: the right side temporal bone is positioned at ear upper limb place, can detect the pressure that fixed band produces in the head part when wearing nose cup and oronasal mask;
Unique point 15: the right side temporal bone is positioned on the ear rear side to be located, and can detect the pressure that fixed band produces in the head part when wearing nose cup and oronasal mask;
Unique point 16: the mid point of ear lower end, right side and unique point 7 lines, can detect the pressure that fixed band produces in the head part when wearing oronasal mask;
Unique point 17: left side brow ridge top and unique point 4 contour points, can detect stationary installation when wearing nose cup to the pressure of head;
Unique point 18: now, near the nasal bone place, can detect the pressure when wearing nose cup and oronasal mask on the wing of nose of left side;
Unique point 19: under the canthus, left side the cheekbone place, can survey the pressure that fixed band produces in the face part when wearing face shield;
Unique point 20: 1cm place, the left side cheek wing of nose outside, can detect when wearing nose cup and oronasal mask at the local pressure that produces of face;
Unique point 21: cheek place, the left side corners of the mouth outside, can detect when wearing oronasal mask at the local pressure that produces of face;
Unique point 22: left side angle of mandible place, can detect when wearing oronasal mask at the local pressure that produces of face;
Unique point 23: the left side temporal bone is positioned at ear upper limb place, can detect the pressure that fixed band produces in the head part when wearing nose cup and oronasal mask;
Unique point 24: the left side temporal bone is positioned on the ear rear side to be located, and can detect the pressure that fixed band produces in the head part when wearing nose cup and oronasal mask;
Unique point 25: the mid point of ear lower end, left side and unique point 7 lines, can detect the pressure that fixed band produces in the head part when wearing oronasal mask;
Further, detection system carries the detection source of the gas as mentioned above, detects source of the gas and comprises that control system can produce appointment ventilation waveform, comprising realizing level pressure ventilation and constant current ventilation;
Further, the human body head three-dimensional model links to each other with simulated lung through the simulation tracheae as mentioned above, and places flow and pressure transducer in simulation tracheae stage casing, for detection of the actual waveform of lung ventilation.
Further, this system comprises a microprocessing unit as mentioned above, can estimate without wound ventilation interface (comprising nose cup, oronasal mask, full facepiece mask etc.) level of comfort, this microprocessing unit by obtain the human body head three-dimensional model in 25 force value that unique point place sensor detects, compare with the tolerance value under the human body head normal condition, when arbitrfary point force value during greater than tolerance value, give the evaluation of " uncomfortable ", when the force value of having a few during all less than tolerance value, give the evaluation of " comfortable ".
Further, this system comprises a microprocessing unit as mentioned above, can estimate the gas leakage degree without wound ventilation interface (comprising nose cup, oronasal mask, full facepiece mask etc.), this microprocessing unit detects ventilation waveform and the actual waveform that sensor is surveyed that source of the gas provides 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.
Description of drawings
Fig. 1 system consists of synoptic diagram
The positive face sensor of Fig. 2 human body head three-dimensional model is placed synoptic diagram
Fig. 3 human body head three-dimensional model side sensor is placed synoptic diagram, (a) right side, (b) left side
The side sensor is placed synoptic diagram behind Fig. 4 human body head three-dimensional model
Fig. 5 system uses synoptic diagram
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing and specific embodiment.
A kind of nothing wound ventilation interface detecting system comprises as shown in Figure 1: can produce the controlled detection source of the gas of specifying waveform, 3 D human body head model with the surface pressing sensor comprises the human respiratory model of simulation tracheae and simulated lung and for detection of the microprocessor of control.Wherein:
(1) system is connected through the simulation tracheae three-dimensional head model by the means such as 3-D scanning three-dimensional head model of head feature structure according to patient's reality with simulated lung.
(2) shown in Fig. 2-4, placement force sensor on 25 unique points of three-dimensional head model:
Unique point 1: nasal bone can detect the pressure when wearing nose cup and oronasal mask near nasion end;
Unique point 2: locate among the people on the nose lower lip, can detect the pressure when wearing nose cup;
Unique point 3: chin upperlip point, can detect and wear oronasal mask;
Unique point 4: the forehead central point, can detect stationary installation when wearing nose cup to the pressure of head;
Unique point 5: on the central sagittal plane, the gold point of 45 ° of scopes of crown section and rear portion can be surveyed the pressure that fixed band produces in the head part when wearing face shield;
Unique point 6: two ear top line and the sagittal intersection point of head can be surveyed the pressure that fixed band produces in the head part when wearing face shield;
Unique point 7: two ear bottoms line and the sagittal intersection point of head can be surveyed the pressure that fixed band produces in the head part when wearing face shield;
Unique point 8: right side brow ridge top and unique point 4 contour points, can detect stationary installation when wearing nose cup to the pressure of head;
Unique point 9: now, near the nasal bone place, can detect the pressure when wearing nose cup and oronasal mask on the wing of nose of right side;
Unique point 10: under the canthus, right side the cheekbone place, can survey the pressure that fixed band produces in the face part when wearing face shield;
Unique point 11: 1cm place, the right side cheek wing of nose outside, can detect when wearing nose cup and oronasal mask at the local pressure that produces of face;
Unique point 12: cheek place, the right side corners of the mouth outside, can detect when wearing oronasal mask at the local pressure that produces of face;
Unique point 13: right side angle of mandible place, can detect when wearing oronasal mask at the local pressure that produces of face;
Unique point 14: the right side temporal bone is positioned at ear upper limb place, can detect the pressure that fixed band produces in the head part when wearing nose cup and oronasal mask;
Unique point 15: the right side temporal bone is positioned on the ear rear side to be located, and can detect the pressure that fixed band produces in the head part when wearing nose cup and oronasal mask;
Unique point 16: the mid point of ear lower end, right side and unique point 7 lines, can detect the pressure that fixed band produces in the head part when wearing oronasal mask;
Unique point 17: left side brow ridge top and unique point 4 contour points, can detect stationary installation when wearing nose cup to the pressure of head;
Unique point 18: now, near the nasal bone place, can detect the pressure when wearing nose cup and oronasal mask on the wing of nose of left side;
Unique point 19: under the canthus, left side the cheekbone place, can survey the pressure that fixed band produces in the face part when wearing face shield;
Unique point 20: 1cm place, the left side cheek wing of nose outside, can detect when wearing nose cup and oronasal mask at the local pressure that produces of face;
Unique point 21: cheek place, the left side corners of the mouth outside, can detect when wearing oronasal mask at the local pressure that produces of face;
Unique point 22: left side angle of mandible place, can detect when wearing oronasal mask at the local pressure that produces of face;
Unique point 23: the left side temporal bone is positioned at ear upper limb place, can detect the pressure that fixed band produces in the head part when wearing nose cup and oronasal mask;
Unique point 24: the left side temporal bone is positioned on the ear rear side to be located, and can detect the pressure that fixed band produces in the head part when wearing nose cup and oronasal mask;
Unique point 25: the mid point of ear lower end, left side and unique point 7 lines, can detect the pressure that fixed band produces in the head part when wearing oronasal mask;
The stressing conditions F at each position of head when using without wound ventilation interface by the sensor detection at above-mentioned 25 unique point places
i, and all stressing conditions are reached systematic microprocessor, with F
iWith tolerance value F
TCompare, work as F
iF
TThe time, point out uncomfortable, and according to F
T-F
i/ F
TEstimate level of comfort, also can be according to max (F
i) position that occurs improves the structure without wound ventilation joint connecting device.
(3) as shown in Figure 5, will be worn on the three-dimensional head model without creating the interface of ventilating when a kind of nothing wound ventilation interface detecting system is used, will be connected with the air supply opening that detects source of the gas without the inlet end of wound ventilation interface and seal.
(4) start-up system detects source of the gas the ventilating modes that comprise level pressure and 2 kinds of appointments of constant volume waveform can be provided, and detects source of the gas and links to each other with systematic microprocessor, pressure waveform P (t) and the flow Flow (t) of ventilating mode can be sent to microprocessor.
(5) can detect the actual stream pressure P that enters lung such as Fig. 1, the sensor of placing at simulation tracheae place shown in Figure 5
l(t) and air flow rate Flow
l(t), and with P
l(t) and Flow
l(t) be sent to systematic microprocessor.By ∫ Flow in the compare cycle
ι(t) dt and ∫ Flow (t) dt, air leakage Δ V=∫ Flow (t) the dt-∫ Flow that estimation produces without wound ventilation interface
ι(t) dt, and according to ∫ FLow
ι(t) dt/ ∫ Flow (t) dt and P
l(t)/P (t) passes judgment on air feed usefulness.
Claims (7)
1. a nothing is created ventilation interface detecting system (01), comprise and to produce the controlled detection source of the gas (02) of specifying waveform, 3 D human body head model (03) with the surface pressing sensor, human respiratory model (04) (05) and for detection of control microprocessor (07), it is characterized in that, described 3 D human body head model surface distributed has pressure transducer (1-25), be furnished with flow and pressure transducer (06) in the 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 be realized the analysis without wound ventilation interface air feed usefulness and comfortable wearing degree.
2. according to claim 1 a kind of without wound ventilation interface detecting system (01), it is characterized in that described 3 D human body head model (03) shape is obtained by actual patient head 3-D scanning.
3. according to claim 1 a kind of without wound ventilation interface detecting system (01), it is characterized in that, described 3 D human body head model (03) surface distributed has a plurality of pressure transducers, when can be used for detecting without the wound ventilation since when wearing the interface arrangement such as face shield each local pressure situation of head to analyze the level of comfort without wound ventilation interface.
For the 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 can detect the pressure when wearing nose cup and oronasal mask near nasion end;
Unique point 2: locate among the people on the nose lower lip, can detect the pressure when wearing nose cup;
Unique point 3: chin upperlip point, can detect and wear oronasal mask;
Unique point 4: the forehead central point, can detect stationary installation when wearing nose cup to the pressure of head;
Unique point 5: on the central sagittal plane, the gold point of 45 ° of scopes of crown section and rear portion can be surveyed the pressure that fixed band produces in the head part when wearing face shield;
Unique point 6: two ear top line and the sagittal intersection point of head can be surveyed the pressure that fixed band produces in the head part when wearing face shield;
Unique point 7: two ear bottoms line and the sagittal intersection point of head can be surveyed the pressure that fixed band produces in the head part when wearing face shield;
Unique point 8: right side brow ridge top and unique point 4 contour points, can detect stationary installation when wearing nose cup to the pressure of head;
Unique point 9: now, near the nasal bone place, can detect the pressure when wearing nose cup and oronasal mask on the wing of nose of right side;
Unique point 10: under the canthus, right side the cheekbone place, can survey the pressure that fixed band produces in the face part when wearing face shield;
Unique point 11: 1cm place, the right side cheek wing of nose outside, can detect when wearing nose cup and oronasal mask at the local pressure that produces of face;
Unique point 12: cheek place, the right side corners of the mouth outside, can detect when wearing oronasal mask at the local pressure that produces of face;
Unique point 13: right side angle of mandible place, can detect when wearing oronasal mask at the local pressure that produces of face;
Unique point 14: the right side temporal bone is positioned at ear upper limb place, can detect the pressure that fixed band produces in the head part when wearing nose cup and oronasal mask;
Unique point 15: the right side temporal bone is positioned on the ear rear side to be located, and can detect the pressure that fixed band produces in the head part when wearing nose cup and oronasal mask;
Unique point 16: the mid point of ear lower end, right side and unique point 7 lines, can detect the pressure that fixed band produces in the head part when wearing oronasal mask;
Unique point 17: left side brow ridge top and unique point 4 contour points, can detect stationary installation when wearing nose cup to the pressure of head;
Unique point 18: now, near the nasal bone place, can detect the pressure when wearing nose cup and oronasal mask on the wing of nose of left side;
Unique point 19: under the canthus, left side the cheekbone place, can survey the pressure that fixed band produces in the face part when wearing face shield;
Unique point 20: 1cm place, the left side cheek wing of nose outside, can detect when wearing nose cup and oronasal mask at the local pressure that produces of face;
Unique point 21: cheek place, the left side corners of the mouth outside, can detect when wearing oronasal mask at the local pressure that produces of face;
Unique point 22: left side angle of mandible place, can detect when wearing oronasal mask at the local pressure that produces of face;
Unique point 23: the left side temporal bone is positioned at ear upper limb place, can detect the pressure that fixed band produces in the head part when wearing nose cup and oronasal mask;
Unique point 24: the left side temporal bone is positioned on the ear rear side to be located, and can detect the pressure that fixed band produces in the head part when wearing nose cup and oronasal mask;
Unique point 25: the mid point of ear lower end, left side and unique point 7 lines, can detect the pressure that fixed band produces in the head part when wearing oronasal mask.
4. as claimed in claim 1, a kind of nothing wound ventilation interface detecting system (01) is characterized in that this detection system carries and detects source of the gas (02), detect source of the gas and comprise that control system can produce appointment ventilation waveform, comprising realizing level pressure ventilation and constant current ventilation.
5. as claimed in claim 1, a kind of without wound ventilation interface detecting system (01), it is characterized in that, human body head three-dimensional model (03) links to each other with simulated lung (04) through simulation tracheae (05), and place flow and pressure transducer (06) in simulation tracheae (05) stage casing, for detection of the actual waveform of lung ventilation.
6. as claimed in claim 1, a kind of without wound ventilation interface detecting system (01), it is characterized in that, this system comprises a microprocessing unit (07), can estimate without wound ventilation interface and (comprise nose cup, oronasal mask, full facepiece mask etc.) level of comfort, this microprocessing unit by obtain the described human body head three-dimensional model of claim 2 (03) in 25 force value that unique point place sensor detects, compare with the tolerance value under the human body head normal condition, when arbitrfary point force value during greater than tolerance value, give the evaluation of " uncomfortable ", when the force value of having a few during all less than tolerance value, give the evaluation of " comfortable ".
7. as claimed in claim 1, a kind of without wound ventilation interface detecting system (01), it is characterized in that, this system comprises a microprocessing unit (07), can estimate without wound ventilation interface (08)---comprise the gas leakage degree of nose cup, oronasal mask, full facepiece mask etc., this microprocessing unit detects ventilation waveform and sensor claimed in claim 4 (06) actual waveform of surveying that source of the gas provides by obtaining claimed in claim 3 carrying, and carry out the contrast of actual ventilation waveform and actual waveform, and then estimation gas leakage degree, pass judgment on air feed usefulness.
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| 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 |
| CN107860498A (en) * | 2017-11-08 | 2018-03-30 | 山西新华化工有限责任公司 | Breathing mask wears pressure test device |
| 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 |
| CN110646148A (en) * | 2019-10-10 | 2020-01-03 | 澎浩船舶技术服务(上海)有限公司 | Respirator check out test set and respirator detecting system |
| CN114136558A (en) * | 2021-11-26 | 2022-03-04 | 中建三局第三建设工程有限责任公司 | Sonar seepage detection method for underground diaphragm wall of deep foundation pit near subway |
| CN116989948A (en) * | 2023-09-25 | 2023-11-03 | 泰州市华通消防装备厂有限公司 | Leak protection gas detection device is used in fire control face guard production |
| CN116989948B (en) * | 2023-09-25 | 2023-12-08 | 泰州市华通消防装备厂有限公司 | Leak protection gas detection device is used in fire control face guard production |
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