By Susan Taplinger
Read time: 3 mins.
Welcome back to Features & Fundamentals — the series that examines essential healthcare products and the design details that influence real-world performance.
Today’s focus: Collagen Dressings and their role in chronic wound care.
Overview
In chronic wounds, tissue can break down faster than the body can repair it. Excessive enzyme activity can damage the natural structures that support healing, slowing the formation of healthy new tissue.
Collagen wound dressings help address this challenge by protecting the body’s natural collagen and providing a framework for new tissue growth.
What It Is
Collagen is a naturally occurring protein that gives skin and connective tissue strength and structure. It also forms part of the extracellular matrix — the network that surrounds and supports cells.
Collagen wound dressings contain purified, processed collagen, commonly derived from cattle (bovine) sources.
What It Does
Collagen dressings support wound healing in two important ways:
1. Support new tissue growth
Collagen fibers provide a framework that helps cells move into the wound and build healthy new tissue. As repair cells migrate through this structure, they help form the tissue needed to fill and close the wound.
2. Help protect natural collagen
Overactive enzymes can break down proteins needed for healing. Collagen dressings provide another source of collagen for these enzymes to break down, potentially reducing damage to the body’s own tissue.
Types of Collagen Dressings
Collagen dressings come in several forms to meet specific wound care needs:
- Sheets and Pads: Flexible layers that cover the wound surface and can often be trimmed to fit
- Powders: Fine particles that conform to irregular surfaces, crevices, and shallow cavities
- Gels: Spreadable formulations that conform to the wound bed and supply moisture to wounds with limited drainage
- Sponges: Soft, porous structures that absorb wound fluid and help maintain a moist wound environment
How It’s Used
Clinicians commonly use collagen dressings for slow-healing wounds, including diabetic foot ulcers, pressure injuries, and venous leg ulcers.
After cleaning the wound, clinicians apply collagen directly to the wound bed, moistening it with sterile saline if required. A secondary dressing secures the collagen, protects the wound, and manages drainage. Dressing changes depend on the product instructions and wound condition.
What to Consider
Collagen dressings may include additional ingredients to support wound healing or incorporate specialized features to meet specific care needs.
Combined Formulations
- Antimicrobial Silver: Adds bacteria-fighting activity to help manage bacterial burden when appropriate.
- Alginate: Absorbs drainage and forms a soft gel, helping manage moderate to heavy exudate while maintaining moisture balance.
- Oxidized Regenerated Cellulose (ORC): Helps bind and reduce excess enzymes that can break down proteins needed for tissue repair.
Dressing Properties
- High Absorbency: Helps manage heavier drainage and excess moisture that can damage surrounding skin.
- Moisture-Donating Formulations: Supply moisture to dry or minimally draining wounds to support healing.
- Resorbable Collagen: Gradually breaks down within the wound, potentially simplifying dressing changes.
- Extended Wear Time: Allows longer intervals between dressing changes, reducing disturbance to the wound bed when appropriate.
How It’s Trending
The collagen wound dressing market continues to grow as aging populations and rising rates of diabetes increase demand for chronic wound care.
Researchers are developing dressings that more closely mimic natural skin and experimenting with formulations that release proteins to stimulate new tissue growth.
These advances could make collagen dressings an increasingly versatile tool for managing complex wounds.
Stay tuned for more product insights in the Features & Fundamentals series.