Educational content only. This article is not medical advice or an instruction for clinical use.
Retrieval begins before the basket opens
In ureteroscopy, stone retrieval is not only about whether an instrument can surround a fragment. The surgeon must first reach the intended area while preserving visualization and maneuverability. A basket moving through a flexible ureteroscope can influence deflection, irrigation and accessory handling. These practical constraints deserve attention during purchasing and testing.
Why nitinol is widely used
Nitinol can recover its shape after elastic deformation, which makes it useful for fine, flexible wire structures. But material alone does not determine performance. Wire arrangement, shaft properties, opening diameter, tip architecture and handle mechanics remain important. A basket may be described as tipless or tipped, and each design reflects particular access and capture trade-offs.
Think in terms of the fragment and the route
The dimensions and location of the fragment, intended capture technique and path of extraction shape basket selection. A large opening can be useful in one context and cumbersome in another. A small shaft might preserve working-channel space but is not necessarily appropriate for every loading requirement. Actual product indications and manufacturer limitations must guide use.
Compare with the ureteroscope, not beside it
A sound evaluation checks French size, working length, basket opening, tip and handle characteristics against the chosen ureteroscope and access sheath. Supplier demonstrations should use compatible systems, and any claims about strength or retrieval performance need product-level test support.
Procurement questions worth asking
Is the intended use stone extraction or another type of retrieval? Is the design tipped or tipless? Can the handle release a difficult capture? What channels and scopes are compatible? What sterile packaging and traceability accompany each unit? These questions create a practical description of the product without resorting to unsupported guarantees.
Editorial reference
Advin stone basket directory [A7]; EAU 2026 Urolithiasis guidance [C1].