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相关概念视频

Mechanical Ventilation II: Invasive Ventilation01:23

Mechanical Ventilation II: Invasive Ventilation

114
Ventilators are essential medical equipment used to aid patients with respiratory difficulties. Their primary function is to assist or replace spontaneous breathing by providing mechanical ventilation. There are two general classes of mechanical ventilators: negative-pressure and positive-pressure ventilators.
Negative-Pressure Ventilators
Negative-pressure ventilators create a vacuum around the chest or body to draw air into the lungs, simulating breathing. This method does not require an...
114
Mechanical Ventilation I: Indication and Settings01:29

Mechanical Ventilation I: Indication and Settings

192
Mechanical ventilation is a life-saving technique for managing acute respiratory failure and other respiratory complications. The process involves using a machine known as a ventilator to supply oxygen to the lungs and assist in removing carbon dioxide. It serves as a bridge to long-term mechanical ventilation or a temporary measure until ventilatory support is discontinued. The ventilator can maintain this function for a prolonged period, providing critical support for patients until they can...
192
Ventilatory Modes01:14

Ventilatory Modes

79
Mechanical ventilators are life-saving devices that support or replace spontaneous breathing. They deliver breaths to patients through varying methods known as ventilator modes. Understanding these modes is critical for healthcare providers managing patients with respiratory failure.
There are three ventilatory modes: full support, partial support, and spontaneous. These are described below.
Full Support Modes
Full support modes include controlled mechanical ventilation, continuous mandatory...
79
PD Controller: Design01:26

PD Controller: Design

194
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
194
Open and closed-loop control systems01:17

Open and closed-loop control systems

660
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
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Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen01:16

Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen

379
Oxygen therapy is a pivotal aspect of medical care, particularly for patients with respiratory ailments. Two prominent oxygen-delivering systems include the Venturi mask and the transtracheal oxygen catheter.
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
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相关实验视频

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Evaluation of Respiratory System Mechanics in Mice using the Forced Oscillation Technique
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计算机控制的混合振荡式风扇的设计和实施.

Andrea F Cruz1, Jacob Herrmann2, Bakir Hajdarevic3

  • 1Department of Anesthesia, University of Iowa, 200 Hawkins Dr, Iowa City, IA 52242.

Journal of medical devices
|October 28, 2024
PubMed
概括

开发了一种新的混合振荡呼吸机,以改善肺功能和气体交换. 该设备支持多频振荡式通风 (MFOV) 进行潜在的不那么有害的机械通风.

关键词:
代的光谱调整.机械通风机械通风机械通风机振荡式通风器的使用振荡计测量 (oscillometry) 是一种方法来测量振荡.呼吸阻碍是指呼吸阻碍的发生.

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相关实验视频

Last Updated: Jun 9, 2025

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科学领域:

  • 生物医学工程 生物医学工程
  • 呼吸系统生理学 呼吸系统生理学
  • 机械通风机械通风机械通风

背景情况:

  • 在异质肺部,可以使用多频振荡通风 (MFOV) 改善肺功能和气体交换.
  • 传统的高频振荡式通风 (HFOV) 使用单一的频率,限制了潜在的好处.
  • 存在对能够使用MFOV和其他通风模式的先进通风器的需求.

研究的目的:

  • 设计和测试计算机控制的混合振荡式通风机.
  • 为了实现多频振荡通风 (MFOV),高频振荡通风 (HFOV),常规机械通风 (CMV) 和振荡计.
  • 评估设备在维持气体交换方面的性能和有效性.

主要方法:

  • 开发了一种计算机控制的混合振荡式呼吸机,配备了一种代光谱反控制器.
  • 在音量控制模式下对商用通风机进行了设备性能测试.
  • 在机械试验肺中验证的振荡模式 (420 Hz,530 cmH2O平均气道压力).
  • 在猪型急性肺损伤模型上进行了概念验证实验.

主要成果:

  • 该设备在音量控制模式下满足商用通风机的性能标准.
  • 振荡式通风模式在机械试验肺中满足了设计规格.
  • 呼吸机成功地维持了猪急性肺损伤模型中的适当气体交换.
  • 该设备展示了产生各种通风波形的能力.

结论:

  • 一个新的混合振荡式呼吸机成功设计和测试.
  • 该设备可以产生各种常规和振荡式通风波形.
  • 这项技术有可能改善气体交换并提供不那么有害的通风.