Volume control device and breathing machine

A volume control and ventilator technology, applied in the field of medical devices, can solve problems such as large errors, excessive ventilation, and the inability of pediatric ventilators to achieve control accuracy.

Active Publication Date: 2015-05-27
AMBULANC (SHENZHEN) TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing tidal volume control method is to adjust the flow through the valve, and then calculate the time integral of the flow. Not only the error is large, but also the cost is high, and the control process is complicated. Especially when it is applied to a pediatric ventilator, it is almost impossible to meet the control accuracy requirements. , prone to adverse consequences such as hypoventilation, overventilation, and lung pressure damage

Method used

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  • Volume control device and breathing machine

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Embodiment Construction

[0013] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0014] Such as figure 1 As shown, in one embodiment, the capacity control device includes a first cylinder G1, a second cylinder G2, a first piston S1, a second piston S2, a first linear screw L1, a second linear screw L2, a driving linear screw L, drive motor M and control unit 101, the first piston S1 is airtightly installed on the first cylinder G1, and the first one-way check valve V1 for air intake and the first one-way check valve V1 for exhaust are arranged on the first cylinder G1 The second one-way check valve V2, the second piston S2 is air-tightly installed on the second cylinder G2, and the second cylinder G2 is provided with a third one-way check valve V3 for exhaust and a second one-way check ...

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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 [0001] The invention relates to the field of medical equipment, in particular to a volume control device and a ventilator. Background technique [0002] As a means of treatment, mechanical ventilation, the volume of gas sent into the patient's body will directly lead to the effect of treatment, as well as the damage to the patient. In the field of children's breathing, tidal volume control is required to be very precise, especially in the respiratory treatment of newborns, because the heart and lungs of newborns are not fully developed, which is manifested in the poor compliance of the chest and lungs, and the insufficiency of the myocardium. The difference between the neonatal ventilator and the general ventilator is that the control accuracy of the four main parameters of tidal volume, pressure, flow and time is higher than that of the adult ventilator. The tidal volume as the main ventilation parameter directly affects the ventilation pressure. And affect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M16/00
Inventor 冯耿超吴本清王双卫
Owner AMBULANC (SHENZHEN) TECH CO LTD
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