This week, 4 Health Care Equipment & Supplies stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

The rating of Cynosure, Inc. Class A (CYNO) moves up this week, rising from a B to a A. Cynosure, Inc. Class A develops, manufactures, and markets aesthetic treatment systems to the dermatology, plastic surgery, and general medical markets. The company also gets A’s in operating margin growth. For more information, get Portfolio Grader’s complete analysis of CYNO stock.

Smith & Nephew PLC Sponsored ADR (SNN) boosts its rating from a C to a B this week. Smith & Nephew PLC Sponsored ADR develops, manufactures, markets and sells of medical devices in the sectors of orthopaedics, endoscopy and advanced wound management. The company also gets A’s in sales growth, earnings growth, and free cash flow. For more information, get Portfolio Grader’s complete analysis of SNN stock.

This is a strong week for CRH Medical Corporation (CRHM). The company’s rating climbs to A from the previous week’s B. The company also gets A’s in sales growth, earnings growth, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of CRHM stock.

Pro-Dex, Inc. (PDEX) improves from a C to a B rating this week. Pro-Dex, Inc. designs, develops and manufactures rotary drive systems for the medical device and dental industries, motion control software and hardware for industrial and scientific applications and fractional horsepower DC motors for aerospace, medical and military applications. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of PDEX 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.