CN100506307C - Ventilation proportion valve for respirator - Google Patents
Ventilation proportion valve for respirator Download PDFInfo
- Publication number
- CN100506307C CN100506307C CNB2006101506548A CN200610150654A CN100506307C CN 100506307 C CN100506307 C CN 100506307C CN B2006101506548 A CNB2006101506548 A CN B2006101506548A CN 200610150654 A CN200610150654 A CN 200610150654A CN 100506307 C CN100506307 C CN 100506307C
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- valve
- air inlet
- liberation port
- electrically connected
- respirator
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Abstract
A breathing proportional valve utilized in a respirator is provided with an air inlet (5), an air outlet (2) and a valve cavity (1) of a discharging mouth (6), wherein the inner walls of the air inlet and the air discharging mouth are flexibly engaged and connected with the side wall of a cylindrical regulating valve (8) which is mounted in the cavity and is capable of being closed, a transversely piercing air inlet valve hole (4) and a discharging valve hole (7) are arranged on the regulating valve body, the regulating valve (8) fully opens the position of the air inlet and staggers an angle with that the regulating valve fully opens the position of the discharging mouth, the maximum discharging area of the discharging mouth is smaller than the maximum air inletting surface of the air inlet (5), the regulating valve is transmitted and connected with a stepping motor (3), a pressure and / or current rate sensor is mounted in the valve cavity (1), the sensor is electrically connected with the input end of an intelligence controlling circuit, and the stepping motor is electrically connected with the input end of an intelligence controlling circuit. The device is capable of controlling the pressure inside the valve cavity and the current rate dynamic state at an optimum state, and has the advantages of small work noises and simple and compact structure.
Description
Technical field
The invention belongs to a kind of medical apparatus and instruments, be specifically related to a kind of valve that is used to regulate respirator gas flow rate or pressure size.
Background technology
Respirator is the important salvage tool of critical patient, clinical practice is more and more wider, become the equipment of section office such as ICU, Pneumology Department, emergency department, Anesthesia Recovery Room and family ward indispensability, respirator is a kind of artificial mechanical ventilation device, in order to autonomous respiration campaign auxiliary or the control patient, to reach the function of gas exchange of lung, reduce the acting of human body respiration flesh, be beneficial to the recovery of respiratory function, deliver to gas in the lung and the outer effect of discharge lung because it can play, also can be referred to as the mechanical ventilation machine clinically.
Respirator mainly is made up of Electronic Control and gas circuit structure two large divisions.The major function of electronic control part is that the control breathing machine is ventilated by patient's respiratory frequency, tidal volume, monitors the feedback data of respective sensor simultaneously and carries out the valve body adjusting, simultaneously alarm when surpassing limited range.The ventilation proportioning valve is the device that is used to control through pipeline gas flow velocity or pressure size in the gas circuit, its primary structure is to be provided with air intake, gas outlet and liberation port, inside is provided with the parts of sustained release mouth sectional area size. and the port of export of proportioning valve links to each other with patient end, can produce a gas pressure and a flow velocity that is fit to treatment in the exit and give patient by the size of sustained release mouth.Liberation port is discharged to unnecessary gas (can connect silencing means) in the atmosphere or (also can pass through silencing means) receives the inlet of source of the gas.
The existing ventilation proportion valve that is used for respirator exists following deficiency to be, its air inlet, the liberation port area is non-adjustable or regulative mode is complicated, because flow that liberation port discharged or pressure size are relevant with needed flow of actual patient or pressure size, so when requirement is smaller, flow that is discharged or pressure are just bigger, and the noise of Chan Shenging is corresponding in this case also increases.In addition, because there is the stack composition of breath residual volume in the ventilation proportioning valve of original noninvasive ventilator in application,, slow sloping portion is arranged so it is partly uneven to cause respiratory curve to breathe out.
Summary of the invention
The technical problem to be solved in the present invention is to overcome above-mentioned deficiency, provide a kind of simple and reasonable, the operation noise is little, can realize Real-time and Dynamic adjustment control to pressure or flow velocity size, thereby the ventilation proportion valve that is used for respirator of accurate pressure control or flow speed control is provided for patient.
The technical scheme that addresses the above problem is (referring to implementing illustration): the present invention is provided with and brings QI KOU (5) into, the valve pocket (1) of gas outlet (2) and liberation port (6), it is characterized in that: described air inlet (5) and liberation port (6) inwall be contained in the valve pocket, tubular control valve (8) snug engagement of air inlet (5) with liberation port (6) sealing can be connected, regulation valve body is provided with lateral direction penetrating, can be respectively with air inlet (5) and liberation port (6) be provided with inlet valve hole (4) and the relief valve aperture (7) that (2) one side valve chambeies (1a), gas outlet are communicated with, control valve (8) is all opened the position of air inlet (5), with the position of all opening liberation port (6) angle that staggers, the maximum of liberation port (6) discharges the full admission area of area less than air inlet (5), described control valve (8) is in transmission connection with motor (3), valve pocket is provided with pressure and/or flow sensor in (1), pick off is electrically connected with the intelligence control circuit input, and motor (3) is electrically connected with the intelligence control circuit outfan.
Operation principle of the present invention is: the control valve (8) in the valve pocket is rotated by motor (3) control, regulate the air inlet area of air inlet and liberation port and discharge area by the different rotational angles of inlet valve hole on it (4) and relief valve aperture (7), because control valve (8) is all opened the position of air inlet (5) and is all opened the position of liberation port (6) in the circumferential angle that staggers by relief valve aperture (7) by inlet valve hole (4), so adjust the suitable angle that staggers, will satisfy rotation along with control valve, when air inlet air inlet area from large to small the time, it is to change from small to big that liberation port discharges area, otherwise, when air inlet air inlet area is when changing from small to big, the liberation port area is from large to small, realize being the inverse ratio variation with the area of two QI KOU of an Electric Machine Control, intelligence control circuit then can come the feedback control motor according to the signal of sensor acquisition in the valve pocket, make control valve need air demand hour in setting, control air inlet area reduces, reduce air demand, the liberation port area increases simultaneously; Process is opposite when setting needs air demand to increase.
The present invention can dynamically be controlled at optimal state with pressure in the valve pocket and flow velocity, accurately provide air flue support pressure or ventilation flow velocity according to patient's needs, the flatness of the flatness of increase patient's respiratory pressure curve or suction current curve, because air inlet area of the present invention and release area can be the adjusting of inverse ratio, so the maximum area of liberation port can reduce, thereby reduce the operating noise of valve, reduce influence, and the present invention also has advantage simple and compact for structure to patient's sleep.
Description of drawings
Fig. 1, the structural representation when embodiment of the invention air inlet 5 is opened fully
Fig. 2, the structural representation when embodiment of the invention liberation port 6 is opened fully
The A-A of Fig. 3, Fig. 1 is to structural representation
Fig. 4, embodiment of the invention control circuit block diagram
1-valve body 2-gas outlet 3-motor 4-inlet valve hole 5-air inlet 6-liberation port 7-discharges valve port 8-control valve 9-pick off
Specific embodiments
The newel of cylinder bodily form control valve 8 upper ends that this is routine embeds in the supported hole of valve pocket inwall with being slidingly matched, the output shaft of lower end and motor is in transmission connection, control valve sidewall and the valve pocket inwall sliding connection that is provided with air inlet 5 and liberation port 6 one sides, can be by rotating respectively with air inlet and liberation port sealing, tubular regulation valve body is provided with and laterally runs through valve body, can aim at air inlet and liberation port respectively, with air inlet and liberation port be provided with inlet valve hole 4 and the relief valve aperture 7 that gas outlet one side valve chamber 1a is communicated with.
The air inlet area of valve pocket air inlet 5 is two times of release area of liberation port 6, air inlet 5 and liberation port 6 are located on the same longitudinal axis of valve pocket, gas outlet 2 is located at the position of circumferential 180 degree of being separated by of valve pocket inwall and air inlet and liberation port, referring to Fig. 3, inlet valve hole 4 that is provided with on the cylinder bodily form control valve 8 and relief valve aperture 7 are in the circumferential angle that staggers, promptly at the circumferential arc length L that staggers of cylindrical regulation valve body sidewall, the arc length that staggers L right chord length equal the diameter of liberation port 6.When inlet valve hole 4 aligning air inlets 5 were all opened it, liberation port 6 was in and is conditioned all critical states of sealing of valve 8 like this; When control valve 8 rotates, when reducing air inlet 5 area directions gradually and rotate, relief valve aperture 7 is opened liberation port 6 gradually, all open until liberation port, thus the rotation by control valve, the area that makes air inlet 5 is the inverse ratio variation with the area of liberation port 6.
On the gas channel of this example gas outlet 2 one sides in valve pocket, be provided with pressure transducer 9, pressure transducer is connected with CPU intelligent controller input by the A/D change-over circuit, on control valve 8, be provided with the hall position sensor that can detect throttle position, position sensor is connected with CPU intelligent controller input, and CPU intelligent controller control signal output ends is electrically connected with motor 3.
On the gas channel of gas outlet 2 one sides, also flow transducer can be set, or pressure and flow transducer be set simultaneously, become digital signal to be input to intelligence control circuit CPU by the A/D circuit conversion pressure in the valve pocket and/or flow analog signals, CPU is according to the rotation that goes out atmospheric pressure and flow control regulating valve of valve pocket gas outlet, uses atmospheric pressure and flow dynamics maintains optimum state.Control valve is provided with position sensor, further improves the degree of accuracy of control.
Claims (6)
1, a kind of ventilation proportion valve that is used for respirator, be provided with and bring QI KOU (5) into, the valve pocket (1) of gas outlet (2) and liberation port (6), it is characterized in that: described air inlet (5) and liberation port (6) inwall be contained in the valve pocket, tubular control valve (8) snug engagement of air inlet (5) with liberation port (6) sealing can be connected, regulation valve body is provided with lateral direction penetrating, can be respectively with air inlet (5) and liberation port (6) be provided with inlet valve hole (4) and the relief valve aperture (7) that (2) one side valve chambeies (1a), gas outlet are communicated with, control valve (8) is all opened the position of air inlet (5) and the position of all opening liberation port (6) angle that staggers, the maximum of liberation port (6) discharges the full admission area of area less than air inlet (5), described control valve (8) is in transmission connection with motor (3), valve pocket is provided with pressure and/or flow sensor in (1), pick off is electrically connected with the intelligence control circuit input, and motor (3) is electrically connected with the intelligence control circuit outfan.
2, the ventilation proportion valve that is used for respirator according to claim 1, it is characterized in that: described air inlet (5) and liberation port (6) are located on the same longitudinal axis of valve pocket, and gas outlet (2) are located at the position of circumferential 180 degree of being separated by of valve pocket inwall and air inlet and liberation port.
3, the ventilation proportion valve that is used for respirator according to claim 1 and 2, it is characterized in that: inlet valve hole (4) that described cylinder bodily form control valve (8) go up to be provided with and relief valve aperture (7) be at the circumferential arc length L that staggers, the arc length that staggers L right chord length equal the diameter of liberation port (6).
4, the ventilation proportion valve that is used for respirator according to claim 1 and 2 is characterized in that: pressure that is provided with in the described valve pocket (1) and/or flow sensor are electrically connected with the intelligence control circuit input by the A/D change-over circuit.
5, the ventilation proportion valve that is used for respirator according to claim 3 is characterized in that: pressure that is provided with in the described valve pocket (1) and/or flow sensor are electrically connected with the intelligence control circuit input by the A/D change-over circuit.
6, the ventilation proportion valve that is used for respirator according to claim 5 is characterized in that: described control valve (8) is provided with hall position sensor, and position sensor is electrically connected with the intelligence control circuit input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101506548A CN100506307C (en) | 2006-10-23 | 2006-10-23 | Ventilation proportion valve for respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101506548A CN100506307C (en) | 2006-10-23 | 2006-10-23 | Ventilation proportion valve for respirator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101168077A CN101168077A (en) | 2008-04-30 |
| CN100506307C true CN100506307C (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101506548A Expired - Fee Related CN100506307C (en) | 2006-10-23 | 2006-10-23 | Ventilation proportion valve for respirator |
Country Status (1)
| Country | Link |
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| CN (1) | CN100506307C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101642597B (en) * | 2008-08-05 | 2012-12-05 | 北京谊安医疗系统股份有限公司 | Expiratory valve |
| CN101745171B (en) * | 2008-12-09 | 2014-06-11 | 北京谊安医疗系统股份有限公司 | Pressure proportional valve |
| CN101757710A (en) * | 2008-12-11 | 2010-06-30 | 北京谊安医疗系统股份有限公司 | Gas flow velocity adjustment device and method for controlling gas flow velocity in life-support machine |
| CN101983738B (en) * | 2010-07-20 | 2013-05-08 | 浙江玉升医疗器械股份有限公司 | Pressure control valve for breathing machine |
| CN102269276B (en) * | 2010-12-31 | 2012-12-12 | 北京谊安医疗系统股份有限公司 | Proportional valve |
| MX2013007931A (en) * | 2011-01-06 | 2013-09-26 | Ino Therapeutics Llc | Gas delivery device and system. |
| CN102793960B (en) * | 2012-08-14 | 2015-01-21 | 苏州品诺维新医疗科技有限公司 | Air path device for pneumatic control passage switching and control method |
| CN105003061A (en) * | 2015-06-08 | 2015-10-28 | 刘影 | Flue machine airflow controller |
| CN109938913A (en) * | 2019-03-27 | 2019-06-28 | 国瑞（天津）医疗科技有限公司 | A kind of gas spray pipe for wound cleaning |
| CN110064115B (en) * | 2019-06-10 | 2020-01-03 | 常州市第一人民医院 | Frequency regulating valve for breathing machine |
| CN112587777A (en) * | 2021-01-12 | 2021-04-02 | 浙江璐洁贸易有限公司 | Adjusting device for automatically adjusting and stabilizing oxygen flow of breathing machine |
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2006
- 2006-10-23 CN CNB2006101506548A patent/CN100506307C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101168077A (en) | 2008-04-30 |
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Granted publication date: 20090701 Termination date: 20101023 |