灵活和可航行的吸入口罩:可以清除什么大小的石头颗粒?
Richard Menzies-Wilson1, Jessica Williams2, Koushikk Ayyappan1
1Nuffield Department of Surgery, University of Oxford, Oxford, UK.
BJU international
|June 29, 2025
概括
灵活和可导航的吸收 (FANS) 尿路接入 (UASs) 在与较小的尿路镜一起使用时,有效清除高达2mm的小石块碎片. 间歇性取出尿道镜可确保在激光石术期间完全清除石头.
科学领域:
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 内分泌学是什么?内分泌学是什么
- 生物医学工程 生物医学工程
背景情况:
- 尿路接入 (UAS) 对于在尿路透镜检查期间管理结石至关重要.
- 灵活和可航行吸收 (FANS) 无人机在石块清除方面提供了潜在的优势.
- 优化FANS UAS性能需要了解其与不同尿管镜尺寸和石头负担的相互作用.
研究的目的:
- 评估FANS无人机系统在基板实验中的石头清理能力.
- 为了确定不同尺寸的尿管镜对FANS UAS性能的影响.
- 在模拟的激光透条件下评估各种石块尺寸的清除.
主要方法:
- 长椅实验使用石英石模拟结石碎片.
- 测试了一台11/13-F FANS无人机,配备9.5-F,7.5-F和6.3-F尿管镜.
- 评估了两只手臂:连续内置尿道镜和间歇性抽出,吸入200mmHg.
主要成果:
- 使用9.5-F尿道镜的FANS UAS清除了64%的石质,但在21分钟内被堵塞.
- 通过间歇性尿路透镜提取实现了完整的石头清除.
- 风扇无人机系统可以清除500微米 (7.5-F范围) 和2毫米 (6.3-F范围) 的石头而不会堵塞.
结论:
- 连续吸收小碎片是可行的7.5-F和6.3-F尿管望远镜在一个FANS无人机.
- 从FANS无人机系统中断断地抽出尿道镜可确保完全清除石块碎片.
- 扇子UAS的性能取决于尿管镜的尺寸和操作策略.
相关概念视频
Quarrying of Stone
203
Quarrying is the process of extracting stone from a quarry, where specialized techniques are employed to remove large blocks of stone safely and efficiently. This process can involve controlled explosions or more precision-oriented methods such as cutting and drilling.
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the...
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the...
203
Urinary Tract Calculi VI: Surgical Management
37
Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...
37
Maximum Size of Aggregate
240
The maximum size of aggregate is defined as the aperture of the sieve retaining 15 percent or more of the particles present in the aggregate sample. The aggregate's maximum size impacts the concrete's water requirement, workability, and strength. Larger aggregates reduce the surface area needing cement paste coverage, which can lower water needs, thereby allowing a decrease in the water-to-cement ratio when the desired workability and richness of the mix are to be maintained, which can...
240
Sieve Analysis and Grading Curves
533
Sieve analysis is a method used to determine the particle size distribution of aggregate materials. This process involves the following steps:
533
Suctioning the Oropharyngeal Airway
393
In preparing for oropharyngeal airway suctioning, a nurse must gather all necessary equipment, including a suction unit with tubing, a prepackaged suction kit, sterile gloves, water or saline for irrigation, a water-soluble lubricant, and additional personal protective equipment (such as a gown, mask, and goggles) to control infections.
After assembling the equipment, the nurse should practice hand hygiene and don appropriate PPE according to infection control guidelines to avoid the...
After assembling the equipment, the nurse should practice hand hygiene and don appropriate PPE according to infection control guidelines to avoid the...
393
Pumped Concrete
129
Concrete in large quantities can be pumped across long distances for placing in inaccessible sites. This system comprises a hopper that receives concrete from a mixer, a pump to propel the concrete, and pipelines that facilitate its delivery.
For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...
For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...
129


