Disposable PVC hematuria catheter
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Classification :
Disposable PVC catheter for hematuria is a single-lumen, balloon-free, short-term medical catheter designed for hematuria drainage. It is made of polyvinyl chloride (PVC) and has a large diameter to prevent blood clots from clogging.
1. Core definition and characteristics
1.1 Chinese name: disposable PVC hematuria catheter.
1.2 material structure: medical-grade PVC, single-cavity straight-through design, no airbag fixation, thick pipe wall and usually large pipe diameter (often ≥18Fr).
1.3 Main uses: acute hematuria drainage, blood clot washing assistance, short-term urine export (non-long-term indwelling).
1.4 Usage scenario: emergency treatment, short-term postoperative drainage, and temporary treatment of hematuria with blood clot retention.
1.5 limitations: the texture is relatively hard compared with silica gel, and its biocompatibility is general. It is not recommended to keep it for a long time? (usually < 24-48 hours), it is easy to cause urethral irritation.
2. The key difference with ordinary catheter.
2.1 Channel design: Hematuria catheter is mostly single-lumen (drainage only), which is different from Foley catheter's double/triple lumen (including balloon water injection and flushing channel); Foley for hematuria is three cavities for continuous flushing, but pure "PVC hematuria catheter" is often used.Refers to a single-lumen large-caliber drainage tube.
2.2 Fixation method: most of them have no balloon and rely on external fixation or temporary indwelling; Foley catheter can be retained for a long time by balloon fixation.
2.3 Diameter selection: large diameter (20-24Fr) is preferred for hematuria scenes to prevent blood clots from blocking, and 14-18Fr is commonly used for common catheterization.
2.4 material characteristics: PVC has low cost and moderate hardness, which is suitable for short term; Silicone material is recommended.
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