Key Takeaways
- Clinical Bottom Line
- Navigating Biliary Decompression
Clinical Bottom Line
| Basket Type | Wire Memory | Clinical Application |
|---|---|---|
| Standard Nitinol Basket | Retains exact shape; does not kink. | Sweeping standard <10mm choledocholithiasis from the CBD without distortion. |
| Lithotripsy Basket (Braided Steel) | Extremely stiff; relies on a heavy metal sheath. | Physically crushing impacted stones >15mm that cannot clear the papilla. |
| Extraction Balloon | Soft silicone balloon. | Sweeping biliary sludge or multiple microscopic stones that slip through baskets. |
Navigating Biliary Decompression
The primary therapeutic objective of 80% of ERCPs is the extraction of retained gallstones trapped within the common bile duct. Following a therapeutic sphincterotomy, the endoscopist must select between a sweeping balloon or a metallic extraction basket to physically drag the debris out into the duodenum.
Mechanical Lithotripsy
When a massive 20mm stone tightly impacts the distal bile duct, attempting to drag it out with a standard basket frequently fails or, catastrophically, causes the basket to become permanently trapped in the duct alongside the stone. In these high-risk scenarios, a dedicated mechanical lithotripsy basket is utilized. The basket wires are braided stainless steel (not memory nitinol). An aggressive metal crank handle is attached externally, and the endoscopist physically cranks the metal sheath down over the basket, generating massive compressive force to literally shatter the stone inside the bile duct into smaller, passable fragments.
Clinical guidelines summarized by the Gastroscholar Research Team. Last updated: 2026. This article is intended for physicians.
