磁性关节增大装置的失败模式:一个单一机构的案例系列与文献审查
Samuel J Bloomsburg1, Anthony J Duncan2,3, Sugong Chen2,4
1School of Medicine & Health Sciences, University of North Dakota, 1301 N Columbia Rd Stop 9037, Grand Forks, ND, 58202-9037, USA. sam.bloomsburg@und.edu.
Surgical endoscopy
|June 26, 2025
概括
磁性关节增大 (MSA) 装置的滑落或迁移是长期失效的常见原因,特别是在患有食障碍或反流的患者中. 改进的外科技术和患者选择可能会改善MSA.
科学领域:
- 胃肠病学 胃肠病学
- 手术创新 在外科创新.
- 医疗器械技术 医疗器械技术
背景情况:
- 磁性缩器增大 (MSA) 是GERD的一种手术选择,其移除率约为4-6%,主要是由于失消症.
- 虽然MSA设备的长期故障模式没有很好地确立,尽管其移除率越来越高.
- 这项研究调查了设备滑落和迁移作为MSA失败的潜在原因.
研究的目的:
- 描述磁缩器增强器 (MSA) 装置故障的模式,特别是滑动或迁移.
- 将结果与有关MSA探测和设备故障的现有文献进行比较.
- 确定改善MSA长期成功的潜在领域.
主要方法:
- 在单一机构 (2014-2024) 接受MSA安置和撤离的患者的回顾性审查.
- 对放射,内镜和手术数据的分析,以评估椎和器件错位.
- 对MSA探索研究的综合文献综述,重点关注设备滑动,错位和缺口.
主要成果:
- 13名患者 (28%) 需要由于缺食或复发性反流而进行MSA切除,随访时间中位数为41.1个月.
- 其中10名患者表现出MSA滑动和/或缺口的证据.
- 文献综述显示,解释率为0-12.6% (中位数为4.7%),食障碍是最常见的原因,但很少报告设备迁移/椎间.
结论:
- 长期跟踪发现MSA患者出现食障碍或反流的器件滑落或迁移的模式,反映了360度的基底复合失败.
- 设备滑落或迁移可能是MSA后症状和故障的未被认可的原因.
- 优化植入技术,患者选择和咨询对于提高MSA的长期疗效至关重要.
相关概念视频
Magnetic Damping
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
Multimachine Stability
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:


