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Updated: Aug 14, 2025

An Immature Murine Model of Reversible Unilateral Ureteral Obstruction
Published on: April 4, 2025
[Ureteral obstruction and segmental ureteral stents]
N K Gadzhiev1,2,3,4,5,6, D S Gorelov1,2,3,4,5,6, V M Obidnyak1,2,3,4,5,6
1Clinic for Pirogov High Medical Technologies, Saint-Petersburg, Russia.
Urological stents, like double-J stents, can cause side effects. This review analyzes modified ureteral stents without coils, such as Memokath and nitinol stents, to improve patient tolerability.
Area of Science:
- Urology
- Medical Devices
- Nephrology
Context:
- Upper urinary tract strictures are a common urological issue.
- Strictures result from various endogenous, exogenous, iatrogenic, and malignant factors.
- Current treatments involve double-J stents or nephrostomy tubes, often with side effects impacting quality of life.
Purpose:
- To review and analyze publications on modified ureteral stents designed to reduce stent-related symptoms.
- To compare commonly used segmental stents without renal and bladder coils.
Summary:
- The article examines modified ureteral stents, focusing on segmental designs lacking renal and bladder coils.
- Specific stents analyzed include Memokath, Uventa, Allium, Memotherm, and nitinol stents from MIT LLC.
- These modified stents aim to improve tolerability and reduce complications associated with traditional urological stenting.
Impact:
- Provides insights into advanced ureteral stent technologies for urological practice.
- Aims to guide clinicians in selecting more tolerable stents for patients with upper urinary tract strictures.
- Contributes to improving patient outcomes and quality of life in urological care.
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