经体人工尿道括约肌袖带放置用于尿道萎缩需要翻修的病例
June 16th, 2022
在这里，我们描述了经体人工尿道括约肌 （AUS） 放置在需要翻修人工尿道括约肌治疗尿道萎缩的病例中的应用。
[旁白]要切除原来的人工尿道括约肌或 AUS，请在放置原始袖带的下阴囊中线上做一个 5 厘米的纵向切口。然后，用剪刀剪掉袖带的一侧并将其从尿道中取出。对于新 AUS 的重新植入，请选择距原始袖带部位远端 2 至 3 厘米的新袖带部位。然后，从海绵体的白膜中解剖含有球海绵体的尿道，并测量尿道周长。接下来，在双侧海綿体的白膜上做两个厘米的纵向切口，在尿道外侧两毫米处，并加深切口，直到可以看到体海绵组织。通过钝性解剖在两个体切开术之间形成一条隧道，并测量含有白膜和球海绵肌的尿道周长。然后，沿着连接管拆下泵和储水器。排出AUS组分中的空气后，将所有组分浸入含有0.5克万古霉素和500毫升0.9%氯化钠的溶液中。接下来，放置一个新的四厘米袖带，其中包含白膜、海绵肌和尿道。将泵放置在原来的阴囊盘空间中。打开腹股沟外环后，用食指通过钝器解剖形成耻骨后膀胱旁空间。使用海绵镊子将水箱放入空间中。用 22 毫升 0.9% 氯化钠溶液填充储液器，并以通常的方式连接整个设备。快速挤压并松开泵灯泡两到三次，并确定所有液体已从袖带中排出。系统测试后，按住泵上的金属按钮几秒钟以停用设备。接下来，用 3-0 个可吸收的 Polyglactin 缝合线将每个切口分层，并用适当的压力包扎手术区域。手术成功后，患者恢复迅速，没有观察到感染、水肿、血肿或尿酸等并发症。该设备在术后第六周在门诊服务中被激活。在六个月的随访中，患者可以熟练地作 AUS 设备，没有压力性尿失禁，也没有发生尿道损伤或排尿困难。
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概述
本文描述了经阴茎体人工尿道括约肌括约肌（AUS）植入在一例由于尿道萎缩需要修正人工尿道括约肌的病例中的应用。该程序旨在恢复因先前手术出现并发症的患者的尿液控制。
关键研究组成部分
科学领域
- 泌尿外科
- 医疗器械
- 尿道手术
背景
- 人工尿道括约肌用于治疗尿失禁。
- 尿道萎缩可能作为先前手术的并发症出现。
- 修正手术可能需要恢复功能。
- 经阴茎体AUS植入是可以在这些病例中使用的技术。
研究目的
- 展示经阴茎体AUS植入技术。
- 解决先前人工尿道括约肌手术的并发症。
- 提供关于尿道萎缩手术方法的见解。
使用的方法
- 需要AUS修正的患者病例研究。
- 详细的手术技术描述。
- 术后尿液功能评估。
- 跟踪评估以监测结果。
主要结果
- 成功植入经阴茎体AUS。
- 手术后尿液控制改善。
- 与先前设备相关的并发症减少。
- 患者对生活质量的积极反馈。
结论
- 经阴茎体AUS植入是修正手术的可行选择。
- 它可以有效解决尿道萎缩的并发症。
- 进一步的研究可能有助于完善技术并改善结果。
常见问题
Executive Industry Relevance
Revision of artificial urinary sphincter (AUS) devices due to urethral atrophy presents a critical challenge in device-based urology, impacting long-term patient outcomes and device durability. The transcorporal cuff placement technique addresses anatomical limitations and risk of erosion, supporting more reliable intervention in complex revision cases. This procedural advancement informs device optimization and risk mitigation strategies across the medical device development pipeline.
Strategic Applications in Biopharma R&D
Early Discovery & Target Validation
- Clarifies anatomical and physiological constraints for device-tissue interface optimization.
- Supports mechanistic de-risking by addressing urethral atrophy as a failure mode.
- Enables functional validation of device placement strategies in compromised tissue environments.
Screening & Assay Development
- Informs preclinical model requirements for simulating urethral atrophy and device revision scenarios.
- Guides development of quantitative endpoints for device-tissue compatibility and erosion risk.
- Supports reproducibility standards for surgical technique evaluation in device studies.
Translational & Preclinical Research
- Aligns surgical innovation with clinical needs in device revision populations.
- Facilitates translational continuity by modeling real-world anatomical challenges in preclinical systems.
- Enables risk-adjusted advancement of device modifications targeting atrophy-related complications.
Pipeline & Workflow Integration
This technique integrates into the device development continuum from early discovery of anatomical risk factors to preclinical validation of surgical solutions for revision cases.
- Discovery Biology: Illuminates tissue adaptation and atrophy mechanisms relevant to device longevity.
- Screening: Establishes reproducible endpoints for device fit and tissue protection in atrophic urethra models.
- Analytics: Provides quantitative follow-up metrics such as continence rates and complication incidence.
- Translational Research: Bridges surgical innovation with unmet clinical needs in revision populations.
- Enterprise Reuse: Offers a procedural template for future device iterations and revision protocols.
Operational & Enterprise Impact
- Scientific Value: Enhances predictive confidence in device performance under compromised anatomical conditions.
- Operational Value: Standardizes revision protocols to improve reproducibility and patient safety.
- Strategic Value: Reduces late-stage device failure risk and informs go/no-go decisions for device modifications.
- Portfolio Impact: Supports risk-adjusted prioritization of device features addressing revision scenarios.
Implementation Considerations
- Requires specialized surgical expertise in transcorporal cuff placement.
- Demands imaging and intraoperative assessment capabilities for anatomical evaluation.
- Necessitates cross-team standardization of revision protocols and follow-up metrics.
- Adaptation may be limited by patient-specific anatomical constraints.
- Short-term follow-up supports safety, but long-term outcomes require further study.
