Rotating Threaded Tip Sheath

The EVOLUTION mechanical dilator sheath set (Cook Vascular) is composed of an inner plastic sheath with a threaded metal tip and an outer telescoping polymer sheath. The inner sheath has a stainless steel tip at its distal end, and no electrical energy supply is required. This sheath is mounted on a pistol capable of mechanically rotating the sheath. Multiple sheath sizes are available 7 F, 9 F, 11 F, and 13 F. A shortle version, with a shorter sheath length, is also available. Although this sheath has the capability of dissecting through all types of tissues, even calcified adhesions, there are only limited experiences reported in literature [20, 21], and some complications related to this tool are described [22] (Fig. 4.13). 

---

Rotating threaded-tip sheath sheaths equipped with a rotationally powered mechanism that bore through and disrupt fibrotic adhesions with a threaded screw mechanism at the sheath tip. 

---