Piper Jaffray analyst Brooks West says cybersecurity expert Mark Lanterman during a conference call yesterday refuted security claims by MedSec and Muddy Waters against St. Jude Medical's (STJ) pacemakers, defibrillators and Merlin monitoring system. Lanterman stated that there is "not much meat on the bone" to the MedSec claims and the quality of the analysis, West tells investors in a research note. He notes that Abbott (ABT) yesterday at a competitor conference earlier stated the St. Jude acquisition was progressing toward a close before year-end. The analyst sees little reason to believe the transaction will not close in the planned timeframe. West reiterates a Neutral rating on St. Jude.