Shares of some top medical devices companies are mixed at 1 p.m.:
Allergan fell $1.72 or 1.5 percent, to $109.75.
Baxter International Inc. fell $.76 or 1.1 percent, to $69.21.
Boston Scientific Corp. fell $.02 or .3 percent, to $7.50.
Johnson & Johnson rose $.50 or .6 percent, to $77.89.
Medtronic fell $.39 or .8 percent, to $45.64.
St. Jude Medical Inc. rose $.15 or .4 percent, to $41.80.
Stryker fell $.39 or .6 percent, to $65.57.
Zimmer Holdings Inc. fell $.55 or .7 percent, to $74.74.








