4 Health Care Equipment & Supplies stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

Greatbatch, Inc. (GB) is seeing ratings go up from a C last week to a B this week. Greatbatch, Inc. develops and manufactures power sources, feedthroughs, and wet tantalum capacitors used in implantable medical devices. For more information, get Portfolio Grader’s complete analysis of GB stock.

The rating of ZELTIQ Aesthetics, Inc. (ZLTQ) moves up this week, rising from a C to a B. ZELTIQ Aesthetics, Inc. provides medical services. The company also gets A’s in sales growth and earnings revisions. For more information, get Portfolio Grader’s complete analysis of ZLTQ stock.

Meridian Bioscience, Inc.’s (VIVO) ratings are looking better this week, moving up to a A from last week’s B. Meridian Bioscience, Inc. manufactures diagnostic test kits, bulk antigens, antibodies and bioresearch reagents used by researchers and other diagnostic manufacturers. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of VIVO stock.

This week, CAS Medical Systems, Inc. (CASM) pushes up from a C to a B rating. CAS Medical Systems, Inc. is a medical technology company that develops, manufactures and markets non-invasive patient monitoring products that are vital to patient care. For more information, get Portfolio Grader’s complete analysis of CASM stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.