Our Technologies

Understanding convexity: Support for a more secure seal

Convexity is the outward curve built into some ostomy skin barriers (wafers). It applies gentle pressure around the stoma to help improve the fit and reduce leakage, supporting a more secure seal between the barrier and the skin.

Five characteristics of convexity

Convexity performance is defined by five characteristics that help clinicians match the barrier to each patient’s anatomy:

• Depth: Is the distance between the highest point on the skin barrier and the base of the skin barrier.
• Compressibility: The maximum amount a convex skin barrier can be flattened.
• Flexibility: How easily the barrier bends.
• Tension location: Where the convex dome presses downward and outward on the area around the stoma.
• Slope: The angle between the highest point on the skin barrier and the base of the skin barrier.

These characteristics guide clinicians in selecting the minimum effective convexity needed to achieve a secure, reliable seal.

Find the right convex fit for your body

Convatec offers a wide range of convex options designed to fit different anatomies and lifestyles. Selecting the right convexity fit can help reduce leakage, protect peristomal skin, and support longer, more comfortable wear time.

Esteem Body™ with Leak Defense™

Our one-piece soft convex system is built to adapt to the body – because every body deserves to live without leaks.

Esteem Body™ with Leak Defense™ brings together our trusted hydrocolloid adhesives and a full convexity range to create a secure, longer-lasting seal.

• Available in 2 purposeful convex depths and 4 tension locations to help you find the right fit.
• Adhesives inspired by our hydrocolloid heritage – crafted to help users “get it right” the first time.
• Designed to support flush or retracted stomas, as well as abdomens with folds, creases, or loose skin.