6 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”).

Stryker Corporation (SYK) earns a A this week, jumping up from last week’s grade of B. Stryker Corporation produces a variety of products in the medical technology sector. The company also gets A’s in operating margin growth, earnings growth, and return on equity. For more information, get Portfolio Grader’s complete analysis of SYK stock.

STERIS Plc (STE) is seeing ratings go up from a C last week to a B this week. STERIS Plc provides products and services related to infection prevention and surgical procedures. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of STE stock.

This week, Smith & Nephew PLC Sponsored ADR (SNN) pushes up from a C to a B rating. 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 return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of SNN stock.

This is a strong week for Boston Scientific Corporation (BSX). The company’s rating climbs to A from the previous week’s B. Boston Scientific Corporation is a developer, manufacturer and marketer of medical devices that are used in a range of interventional medical specialties. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of BSX stock.

MGC Diagnostics Corporation (MGCD) gets a higher grade this week, advancing from a C last week to a B. The company also gets A’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of MGCD stock.

Stereotaxis, Inc. (STXS) shows solid improvement this week. The company’s rating rises from a C to a B. Stereotaxis, Inc. designs, manufactures, and markets cardiology instrument control system in the United States and internationally. For more information, get Portfolio Grader’s complete analysis of STXS 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.