CN103405838A - Volume control device and breathing machine - Google Patents
Volume control device and breathing machine Download PDFInfo
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- CN103405838A CN103405838A CN2013103840529A CN201310384052A CN103405838A CN 103405838 A CN103405838 A CN 103405838A CN 2013103840529 A CN2013103840529 A CN 2013103840529A CN 201310384052 A CN201310384052 A CN 201310384052A CN 103405838 A CN103405838 A CN 103405838A
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Abstract
A volume control device comprises a first cylinder, a second cylinder, a first piston, a second piston, a first linear screw, a second linear screw, a driving linear screw, a driving motor and a control unit. The first piston is arranged on the first cylinder in an airtight mode, a first one-way check valve and a second one-way check valve are arranged on the first cylinder, the second piston is arranged on the second cylinder in an airtight mode, a third one-way check valve and a fourth one-way check valve are arranged on the second cylinder, the first linear screw is connected with the first piston, the second linear screw is connected with the second piston, the first linear screw is meshed with the driving linear screw in the forward direction, the second linear screw is meshed with the driving linear screw in the reversed direction, the driving motor drives the linear screw to rotate and drives the linear motion of the first linear screw and the second linear screw in the opposite directions simultaneously, so that volume variation of the first cylinder and the second cylinder is the same. A breathing machine comprises the volume control device. The volume control device can greatly improve the control precision of the breathing machine for controlling a small amount of air and even a trace of air.
Description
Technical field
The present invention relates to medical instruments field, relate in particular to a kind of capacity control device and respirator.
Background technology
Mechanical ventilation is as a kind for the treatment of means, and the gas capacity of sending in the patient body will directly cause the effect for the treatment of, and to patient's infringement.On the infant's respiration field, require the control of tidal volume very accurate, particularly on neonatal respiratory therapy due to the neonatal heart, lung development is not yet sound, shows that breast, lung compliance are poor, cardiac muscle is unsound.At first the difference of the special-purpose respirator of neonate and general respirator is more than adult's respirator on the control accuracy of tidal volume, pressure, flow and time four major parameters, wherein tidal volume has directly affected the pressure of ventilation as main ventilation parameter, and the impact of the flow of being ventilated and time.
Existing tidal volume control mode is all by the valve regulated flow, the computing of again flow being carried out to time integral obtains, not only error is large, and cost is high, the control procedure complexity, particularly be applied in the requirement that almost can't reach control accuracy on the infant's respiration machine, easily cause hypoventilation, the adverse consequencess such as excessive and pulmonary's pressure damage of ventilating.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of capacity control device and the respirator with this capacity control device are provided, greatly improve the control accuracy of Low tidal volume and even micro-tidal volume.
For achieving the above object, the present invention is by the following technical solutions:
A kind of capacity control device, comprise the first cylinder, the second cylinder, first piston, the second piston, the first linear screw, the second linear screw, drive linear screw, drive motors and control unit, the airtight feud of described first piston is arranged on described the first cylinder, on described the first cylinder, be provided with for the first one way stop peturn valve of air inlet with for the second one way stop peturn valve of aerofluxus, described the second airtight feud of piston is arranged on described the second cylinder, on described the second cylinder, be provided with for the 3rd one way stop peturn valve of aerofluxus with for the 4th one way stop peturn valve of air inlet, described the first linear screw connects and drives described first piston, described the second linear screw connects and drives described the second piston, described control unit is connected with described drive motors, the outfan of described drive motors is coupled to described driving linear screw, described the first linear screw and described driving linear screw positive engagement, described the second linear screw and described driving linear screw oppositely mesh, described driving linear screw rotation drives described the first linear screw simultaneously makes described the first cylinder identical with the volume-variation amount that described the second cylinder produces with described the second linear screw rectilinear motion in the opposite direction.
The sectional area in the same size of described the first cylinder and described the second cylinder, by described the first linear screw of described driving linear screw rotary actuation and described the second linear screw advance separately apart from the same size.
A kind of respirator, comprise and breathe gas circuit and the capacity control device be connected with described breathing gas circuit, described capacity control device comprises the first cylinder, the second cylinder, first piston, the second piston, the first linear screw, the second linear screw, drive linear screw, drive motors and control unit, the airtight feud of described first piston is arranged on described the first cylinder, on described the first cylinder, be provided with for the first one way stop peturn valve of air inlet with for the second one way stop peturn valve of aerofluxus, described the second airtight feud of piston is arranged on described the second cylinder, on described the second cylinder, be provided with for the 3rd one way stop peturn valve of aerofluxus with for the 4th one way stop peturn valve of air inlet, described the first linear screw connects and drives described first piston, described the second linear screw connects and drives described the second piston, described control unit is connected with described drive motors, the outfan of described drive motors is coupled to described driving linear screw, described the first linear screw and described driving linear screw positive engagement, described the second linear screw and described driving linear screw oppositely mesh, described driving linear screw rotation drives described the first linear screw simultaneously makes described the first cylinder identical with the volume-variation amount that described the second cylinder produces with described the second linear screw rectilinear motion in the opposite direction.
The sectional area in the same size of described the first cylinder and described the second cylinder, by described the first linear screw of described driving linear screw rotary actuation and described the second linear screw advance separately apart from the same size.
Useful technique effect of the present invention:
Engagement by linear screw, rotation by the driving linear screw drives the first linear screw simultaneously, the second linear screw is moved round about, drive the first cylinder, the consistent volume-variation amount of the second cylinder generation, capacity control device of the present invention can realize that the accurate gas of capacity continues constant output, the ventilation that is particularly suitable for low tidal volume or even micro-tidal volume is controlled, therefore use it on respirator, also can realize having the respirator of the lasting constant output of micro-tidal volume.
The accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of capacity control device of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated.Should be emphasized that, following explanation is only exemplary, rather than in order to limit the scope of the invention and to apply.
As shown in Figure 1, in a kind of embodiment, capacity control device comprises the first cylinder G1, the second cylinder G2, first piston S1, the second piston S2, the first linear screw L1, the second linear screw L2, drive linear screw L, drive motors M and control unit 101, the airtight feud of first piston S1 is arranged on the first cylinder G1, on the first cylinder G1, be provided with for the first one way stop peturn valve V1 of air inlet with for the second one way stop peturn valve V2 of aerofluxus, the second airtight feud of piston S2 is arranged on the second cylinder G2, on the second cylinder G2, be provided with for the 3rd one way stop peturn valve V3 of aerofluxus with for the 4th one way stop peturn valve V4 of air inlet, the first linear screw L1 connects and drives first piston S1, the second linear screw L2 connects and drives the second piston S2, control unit 101 is connected with drive motors M, the outfan of drive motors M is coupled to and drives linear screw L, the first linear screw L1 and driving linear screw L positive engagement, the second linear screw L2 and driving linear screw L oppositely mesh, by driving the engagement of linear screw L and the first linear screw L1 and the second linear screw L2, can the rectilinear motion (left and right directions in figure) that rotatablely moves and be converted to simultaneously the first linear screw L1 and the second linear screw L2 of linear screw L will be driven, and driving linear screw L rotation drives the first linear screw L1 simultaneously makes the first cylinder G1 identical with the volume-variation amount that the second cylinder G2 produces with the second linear screw L2 rectilinear motion in the opposite direction.
By driving the meshing relation of linear screw L and the first linear screw L1 and the second linear screw L2, the work process of capacity control device can be designed to: while when driving the driven motor M driving of linear screw L, clockwise rotating, the first linear screw L1 is to diagram left rectilinear motion, drive the volume of first piston S1 compression the first cylinder G1, gas in the first cylinder G1 is expelled to outside gas circuit by the second one way stop peturn valve V2, now the first one way stop peturn valve V1 closes, simultaneously, the second linear screw L2 is to the right-hand rectilinear motion of diagram, drive the volume that the second piston S2 enlarges the second cylinder G2, the gas of outside gas circuit enters in the second cylinder G2 by the second one way stop peturn valve V4, now the 3rd one way stop peturn valve V3 closes, on the contrary, while when driving the driven motor M driving of linear screw L, rotating counterclockwise, the first linear screw L1 is to the right-hand rectilinear motion of diagram, drive the volume that first piston S1 enlarges the first cylinder G1, the gas of outside gas circuit enters in the first cylinder G1 by the first one way stop peturn valve V1, now the second one way stop peturn valve V2 closes, simultaneously, the second linear screw L2 is to diagram left rectilinear motion, drive the volume of second piston S2 compression the second cylinder G2, gas in the second cylinder G2 is expelled to outside gas circuit by the 3rd one way stop peturn valve V3, now the 4th one way stop peturn valve V4 closes.
In preferred embodiment, the sectional area in the same size of the first cylinder G1 and the second cylinder G2, by drive that linear screw L rotary actuation the first linear screw L1 and the second linear screw L2 advance separately apart from the same size.
Control unit 101 can be controlled speed and the angle that drive motors M forwards and reverses and rotates by CPU and associated driver circuitry.In order to reach the accurate control to capacity, can adjust the rotating angle of drive motors M, to eliminate the mismachining tolerance existed on the first cylinder G1 and the second cylinder G2 size.In order to eliminate error, can will adjust deposit data in memory element, control unit 101 reads and adjusts data be used to eliminating error when each power-up initializing, reach the purpose that capacity is accurately controlled.
In a kind of embodiment, respirator comprises breathes gas circuit (not shown) and the capacity control device be connected with the breathing gas circuit, and capacity control device as shown in Figure 1.By capacity control device, this respirator can be realized the accurately lasting constant output of micro-tidal volume.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (4)
1. capacity control device, it is characterized in that, comprise the first cylinder, the second cylinder, first piston, the second piston, the first linear screw, the second linear screw, drive linear screw, drive motors and control unit, the airtight feud of described first piston is arranged on described the first cylinder, on described the first cylinder, be provided with for the first one way stop peturn valve of air inlet with for the second one way stop peturn valve of aerofluxus, described the second airtight feud of piston is arranged on described the second cylinder, on described the second cylinder, be provided with for the 3rd one way stop peturn valve of aerofluxus with for the 4th one way stop peturn valve of air inlet, described the first linear screw connects and drives described first piston, described the second linear screw connects and drives described the second piston, described control unit is connected with described drive motors, the outfan of described drive motors is coupled to described driving linear screw, described the first linear screw and described driving linear screw positive engagement, described the second linear screw and described driving linear screw oppositely mesh, described driving linear screw rotation drives described the first linear screw simultaneously makes described the first cylinder identical with the volume-variation amount that described the second cylinder produces with described the second linear screw rectilinear motion in the opposite direction.
2. capacity control device as claimed in claim 1, it is characterized in that, the sectional area in the same size of described the first cylinder and described the second cylinder, by described the first linear screw of described driving linear screw rotary actuation and described the second linear screw advance separately apart from the same size.
3. respirator, comprise and breathe gas circuit and the capacity control device be connected with described breathing gas circuit, it is characterized in that, described capacity control device comprises the first cylinder, the second cylinder, first piston, the second piston, the first linear screw, the second linear screw, drive linear screw, drive motors and control unit, the airtight feud of described first piston is arranged on described the first cylinder, on described the first cylinder, be provided with for the first one way stop peturn valve of air inlet with for the second one way stop peturn valve of aerofluxus, described the second airtight feud of piston is arranged on described the second cylinder, on described the second cylinder, be provided with for the 3rd one way stop peturn valve of aerofluxus with for the 4th one way stop peturn valve of air inlet, described the first linear screw connects and drives described first piston, described the second linear screw connects and drives described the second piston, described control unit is connected with described drive motors, the outfan of described drive motors is coupled to described driving linear screw, described the first linear screw and described driving linear screw positive engagement, described the second linear screw and described driving linear screw oppositely mesh, described driving linear screw rotation drives described the first linear screw simultaneously makes described the first cylinder identical with the volume-variation amount that described the second cylinder produces with described the second linear screw rectilinear motion in the opposite direction.
4. respirator as claimed in claim 3, it is characterized in that, the sectional area in the same size of described the first cylinder and described the second cylinder, by described the first linear screw of described driving linear screw rotary actuation and described the second linear screw advance separately apart from the same size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310384052.9A CN103405838B (en) | 2013-08-29 | 2013-08-29 | Volume control device and breathing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310384052.9A CN103405838B (en) | 2013-08-29 | 2013-08-29 | Volume control device and breathing machine |
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| CN103405838A true CN103405838A (en) | 2013-11-27 |
| CN103405838B CN103405838B (en) | 2015-05-27 |
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| CN201310384052.9A Active CN103405838B (en) | 2013-08-29 | 2013-08-29 | Volume control device and breathing machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110025839A (en) * | 2019-05-31 | 2019-07-19 | 河南科技大学第一附属医院 | A kind of emergency department's sputum aspirator |
| CN115452482A (en) * | 2022-10-28 | 2022-12-09 | 国网山西省电力公司超高压变电分公司 | Liquid taking device in narrow electrified space of transformer substation or converter station |
| CN119055936A (en) * | 2024-11-06 | 2024-12-03 | 宁波大学附属第一医院 | Bronchoscope drug delivery device |
-
2013
- 2013-08-29 CN CN201310384052.9A patent/CN103405838B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110025839A (en) * | 2019-05-31 | 2019-07-19 | 河南科技大学第一附属医院 | A kind of emergency department's sputum aspirator |
| CN110025839B (en) * | 2019-05-31 | 2021-04-30 | 青岛市市立医院 | A sputum suction device in emergency department |
| CN115452482A (en) * | 2022-10-28 | 2022-12-09 | 国网山西省电力公司超高压变电分公司 | Liquid taking device in narrow electrified space of transformer substation or converter station |
| CN115452482B (en) * | 2022-10-28 | 2023-07-04 | 国网山西省电力公司超高压变电分公司 | Liquid taking device in narrow and small electrified space of transformer substation or convertor station |
| CN119055936A (en) * | 2024-11-06 | 2024-12-03 | 宁波大学附属第一医院 | Bronchoscope drug delivery device |
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| CN103405838B (en) | 2015-05-27 |
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Address after: A1302, Shenzhen national engineering laboratory building, No.20, Gaoxin South 7th Road, high tech Zone community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Security Medical Technology Co.,Ltd. Address before: 518000 floor 3, block a, Nanyuan Industrial Park, Xinyuan Road, Nanshan District, Shenzhen, Guangdong Patentee before: AMBULANC (SHENZHEN) TECH. Co.,Ltd. |
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Address after: 518000, Building 1, 101, Evergrande Fashion Huigu Building, Fulong Road, Shanghenglang Community, Dalang Street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Security Medical Technology Co.,Ltd. Country or region after: China Address before: A1302, Shenzhen national engineering laboratory building, No.20, Gaoxin South 7th Road, high tech Zone community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee before: Shenzhen Security Medical Technology Co.,Ltd. Country or region before: China |