相关实验视频
Updated: Jun 11, 2025

03:57
Electrochemotherapy of Tumours
Published on: December 15, 2008
24.5K
概括
对外科医生来说,了解电外科单位的设置至关重要. 电压和工作周期决定了切割或凝结等组织效应,影响了外科手术的结果.
科学领域:
- 电外科手术是用电器进行的.
- 手术技术 手术技术
- 生物医学工程 生物医学工程
背景情况:
- 电外科单位 (ESU) 是重要的外科工具,但它们的设置和由此产生的组织效应往往被临床医生误解.
- 电参数 (阻抗,电流,电压) 和组织相互作用 (凝血,切割) 之间的关系是复杂的,并非直观明显.
研究的目的:
- 澄清控制电外科单位设置的基本电气原理.
- 解释电压和工作周期如何影响组织效应,区分凝固和切割模式.
- 强调外科医生理解ESU控制对安全有效的外科实践的重要性.
主要方法:
- 分析电术原理,重点关注电压,电流和工作周期.
- 电气参数与观察到的组织效应 (凝血,切割,混合模式) 的相关性.
- 审查现代电术装置如何管理能量输出,并向用户提供设置.
主要成果:
- 较低的电压 (<200 V) 和较慢的加热导致更深的凝血.
- 较高的电压 (>200V) 和工作周期 (>50%) 通过电弧引起表面电池爆炸 (切割).
- 特定的电压和工作周期组合决定了混合电流或强制凝固 (例如,蓝色踏板<10%的工作周期).
- 较新的ESU通常控制电压和极限功率 (瓦),但设置是由组织效应 (切割/凝固) 描述的,而不是原始电气参数.
结论:
- 外科医生必须明白,电压对于组织影响至关重要,它超越了简单的瓦特功率设置.
- 在ESU中,区分电压控制和能量输出控制至关重要.
- 澄清ESU设置和程序的电气基础可以改善外科手术决策和患者安全.
更多相关视频
11:46Investigation of the Electrophysiological and Thermographic Safety Parameters of Surgical Energy Devices During Thyroid and Parathyroid Surgery in a Porcine Model
Published on: October 13, 2022
1.4K
06:25Cooling or Warming the Esophagus to Reduce Esophageal Injury During Left Atrial Ablation in the Treatment of Atrial Fibrillation
Published on: March 15, 2020
9.6K
相关概念视频
Atomic Emission Spectroscopy: Overview
1.6K
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
1.6K
Electroconvulsive Therapy
28
Electroconvulsive therapy (ECT), or shock therapy, remains a critical biomedical intervention for severe, treatment-resistant depression. While its origins can be traced back to Hippocrates' observations that malaria-induced convulsions alleviated mental illness, modern ECT has evolved significantly from its earlier, more primitive applications. First introduced in 1938 by Ugo Cerletti and his colleagues, ECT involves inducing controlled seizures using electrical currents. In its early...
28
Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle
537
Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
537
Eddy Currents
1.5K
Since eddy currents occur only in conductors, magnets can separate metals from other materials. For example, in a recycling center, trash is dumped in batches down a ramp, beneath which lies a powerful magnet. Conductors in the trash are slowed by eddy currents, while nonmetals in the trash move on, separating from the metals. This works for all metals, not just ferromagnetic ones.
Other major applications of eddy currents appear in metal detectors and the braking systems of trains and roller...
Other major applications of eddy currents appear in metal detectors and the braking systems of trains and roller...
1.5K
Psychosurgery
47
Psychosurgery, the surgical alteration or permanent removal of brain tissue to alleviate severe psychological conditions, stands as one of the most radical and controversial treatments in the history of mental health care. Its development and application have evolved significantly, marked by dramatic shifts in scientific understanding and ethical perspectives.
Historical Development of Psychosurgery
In the 1930s, Portuguese neurologist Antonio Egas Moniz introduced a surgical procedure designed...
Historical Development of Psychosurgery
In the 1930s, Portuguese neurologist Antonio Egas Moniz introduced a surgical procedure designed...
47