Shares of some top medical devices companies are mixed at 10 a.m.:
Allergan fell $.41 or .4 percent, to $110.31.
Baxter International Inc. fell $.02 or percent, to $69.90.
Boston Scientific Corp. rose $.04 or .5 percent, to $7.49.
Johnson & Johnson fell $.34 or .4 percent, to $79.11.
Medtronic rose $.15 or .3 percent, to $45.69.
St. Jude Medical Inc. rose $.05 or .1 percent, to $42.01.
Stryker fell $.10 or .2 percent, to $65.27.
Zimmer Holdings Inc. fell $.12 or .2 percent, to $73.10.








