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SUGGESTED INSTRUCTIONS FOR USE
Evolution® Shortie RL Controlled-Rotation Dilator Sheath Set
WARNING: When using dilator sheaths or sheath sets, do not insert more than one sheath set into a
vein at a time. Severe vessel damage, including venous wall laceration requiring surgical repair, may
occur.
WARNING: Do not attempt to negotiate the Evolution® Shortie RL Controlled-Rotation Dilator Sheath
Set
past a bend in the vessel as vessel wall or cardiac lead insulation damage may occur.
1. Surgically expose the proximal end of the indwelling catheter/lead and remove the catheter/lead from
its connections (if connected). Remove all suture and tie-down materials.
2. Cut off all proximal fittings, if present, using clippers or other cutters. It is important to cut the catheter/
lead very close to the connector (but past any crimp joints) leaving as long a portion of the indwelling
catheter/lead to work with as possible. Avoid closing off the interior lumen (or coil) of the catheter/lead
when cutting it.
3. Consider passing a Locking Stylet through the inner lumen of the catheter/lead to stabilize the catheter/
lead during dilation of surrounding tissues. Closely follow the Suggested Instructions for Use for the
Locking Stylet to:
A. Expose the inner coil of the catheter/lead
B. Check patency of the coil lumen
C. Determine the appropriate size of Locking Stylet based on the inner diameter of the catheter/lead
D. Advance the Locking Stylet to the distal end of the catheter/lead
E. Lock the Locking Stylet in place
4. Unless the catheter/lead insulation is damaged, degraded or too thin, tie a ligature or use a compression
coil (Cook) at the proximal end of the catheter/lead, compressing the insulation against the coil and Locking
Stylet to help prevent the coil and insulation from stretching. The ligature can be tied to the loop handle or
to the suture tie loop.
NOTE: If a Locking Stylet has not been used, be aware that damage to the catheter/lead caused by
pulling on it may prevent subsequent passage of a Locking Stylet through the lumen and/or make
dilation of scar tissue more difficult.
5. For an active fixation catheter/lead, attempt to unscrew the catheter/lead by rotating the catheter/lead
and Locking Stylet counterclockwise if appropriate.
6. Gently pull back on the catheter/lead to see if it is still engaged in tissue. If the catheter/lead is sufficiently
loose in the tissue, gently pull on the Locking Stylet and catheter/lead to remove it.
NOTE: If removing a chronic pacing lead, be aware that if it is freed spontaneously during the extraction
procedure, the lead tip may become trapped in the upper vasculature. Dilator sheaths, advanced at least
to the innominate vein, are often necessary to extract the lead tip through the scar tissue at the site of
venous entry, and to avoid a venotomy.
7. If the catheter/lead is not removed from the vessel with gentle pulling then using dilator sheaths,
including the Evolution® Shortie RL Controlled-Rotation Dilator Sheath Set may help separate the catheter/
lead from tissue encapsulation.
8. With the inner Evolution® Shortie RL Controlled-Rotation Dilator Sheath Set placed inside the appropriate
outer sheath for telescopic action, insert the proximal free end of the catheter/lead into the distal end of
the inner Evolution® Shortie RL Controlled-Rotation Dilator Sheath Set. Advance the catheter/lead until it
completely exits the opposite (proximal) end of the sheath set.
9. Apply adequate retracting pressure or tension on the catheter/lead and Locking Stylet.
This is critical to
safe passage of the sheath set over the catheter/lead. If tension is inadequate, the catheter/lead may
buckle, precluding the sheath set from advancement along the appropriate path.
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