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Health care stocks were falling, with the NYSE Health Care Sector Index down nearly 0.8% and shares of health care companies in the S&P 500 decreasing 0.4% as a group.

In company news, Stereotaxis Inc. ( STXS ) spiked Monday after U.S. regulators approved the medical device company's Vdrive with V-CAS catheter advancement system, the third Vdrive product to be cleared by the U.S. Food and Drug Administration.

The newly clear device was first released in Europe in 2011 and allows physicians to remotely control the advancement, retraction and rotation of a transseptal sheath together with a magnetic ablation catheter.

The maker of robotic devices used to treat abnormal heart rhythms also said its Odyssey product line recently was approved for use by the Japan Pharmaceuticals and Medical Devices Agency.

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Health Care Sector Update for 01/05/2015: STXS,CNAT,BCLI