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more healing less pain


PolyMem® dressings belong to an innovative class of multifunctional wound care dressings. PolyMem dressings effectively cleanse, fill, absorb and moisten wounds throughout the healing continuum. No other single wound dressing combines these key wound-healing capabilities like PolyMem. Built right into a PolyMem dressing, these four capabilities are ready when you need them — without incurring extra costs or needing additional supplies.


PolyMem contains a mild, nonionic, nontoxic, tissue-friendly cleansing agent, activated by moisture that is gradually released into the wound bed. Built-in cleansing capabilities reduce the need to cleanse wounds during dressing changes, so you can avoid disrupting the growth of healthy tissue, as the wound heals.


PolyMem gently expands to fill and conform to the wound.


PolyMem wicks away up to ten times its weight in exudate. The absorption capability activates only if the material detects exudate. PolyMem adjusts to the wound type to provide the dressing function needed.


PolyMem keeps the wound bed moist and soothes traumatized tissues, reducing wound pain and providing comfort at the wound site. The moisturizer also keeps the dressing pad from adhering to the wound so it removes with virtually no pain, improving the caregiver-patient interaction and overall care experience.

How PolyMem Works!

Provides continuous wound bed cleansing

The dressing contains a mild, non-toxic, nonionic, tissue friendly cleansing agent that is activated by moisture, drainage and/or exudate and is gradually released into the wound bed. This reduces interfacial tension between healthy tissue and debris, loosens eschar and necrotic tissue and supports autolytic debridement - all while keeping the wound bed clean throughout healing.

Encourages wound comfort and improved healing

Glycerin (also known as glycerol), a moisturizer contained in the dressing, keeps the dressing from adhering to the wound bed and provides comfort at the wound site. Glycerin also reduces odor, conserves living fat cells, reduces hypergranulation, soothes traumatized tissues and supports autolytic debridement.

Offers impressive wound wicking power

The polyurethane membrane matrix wicks away up to ten times its weight in exudate. It removes in one piece and will not fragment or leave residue in the wound bed. The superabsorbent starch copolymer absorbs and binds the water molecules from the wound fluid, allowing the natural growth factors and nutrients to concentrate in the wound bed.

Provides both a liquid barrier and gas exchange

The semipermeable thin film backing provides a liquid barrier while allowing gas (O2 and CO2) exchange and maintaining an ideal Moisture Vapor Transmission Rate (MVTR) in order to optimize the appropriate moisture balance for healing the wound. The transparent film backing allows visual inspection of the membrane to determine the need for a dressing change.


With PolyMem dressings, you no longer need to rely on multiple wound care products. PolyMem has everything you need in one easy-to-use dressing. PolyMem can effectively replace most common dressings:

- Polyurethane or silicone foams

- Hydrogels (by moistening with sterile water or saline)

- Alginates (by using PolyMem Wic® or PolyMem Wic Silver®)

- Hydrocolloids

- Transparent films

- Gauze and traditional dressings


PolyMem dressings effectively cleanse, fill, absorb and moisten wounds throughout the healing continuum. No other single wound dressing combines these key wound-healing capabilities like PolyMem.

- Leverages innovative formulation of dressing material

- Creates an optimal moist wound healing environment

- Streamlines the process of managing wounds

- Continuous cleansing provided by the dressings

- Usually eliminates need for manual wound bed cleansing during dressing change

You can use PolyMem's family of dressings as primary dressings, secondary dressings or a combination of both to support the entire healing continuum.


PolyMem has been successfully used in the healthcare setting for many years. No other single wound dressing combines four key wound healing capabilities in one easy-to-use dressing like PolyMem. Many healthcare professionals have experienced the benefit of having a primary and secondary dressing, which also acts as an indicator and intelligent dressing, on their shelves.








PolyMem is available through a large selection of distributors all over the world. Please contact our Customer Service department for more information at our toll-free U.S. number, 1-800-POLYMEM (765-9636), our international number (+1 817-900-1301), or via email. A representative will contact you as soon as possible.


Check here for the latest Literature, Case Studies, Published Articles and Pearls of Practice.


Case Studies

Published Articles

Pearls of Practice



Founded in 1977, Ferris Mfg. Corp. has been dedicated to developing innovative products that bring desired and effective results to the healing process. Ferris is a privately owned producer and distributor of PolyMem® Wound Care Dressings, Shapes®, RhinoPak® Dressings for Nasal Surgery.

Ferris has received numerous awards including the KPMG Peat Marwick High Tech Entrepreneur Award, the Medical Device and Diagnostic Industry's Medical Design Excellence Awards®, and the Illinois Governor's Export Award.

Ferris is committed to providing innovative and superior quality products and service to customers. Ferris has developed a Quality System to meet and exceed the standards and regulations of the United States, Canada, the European Union, and other countries and organizations of the world.

Click here for Regulatory information on Ferris Mfg. Corp.


Applying Science to the Art of Wound Care and Pain Treatment

PolyMem’s formulation was patented in 1988 by Robert W. Sessions, a former director of biomedical research at Chicago’s Rush-Presbyterian St. Luke’s Medical Center. Ferris Mfg. Corp. and founder, Sessions, have received numerous awards and recognitions for excellence in medical product design and contributions to the medical profession.

Sessions is responsible for numerous inventions, including: one of the first implantable cardiac pacemakers; disposable electrocardiogram electrodes; a disposable bone marrow aspiration needle; a suture-less cannula for open heart surgery; the Hunter-Sessions Vena Cava Occluder (an implant to prevent blood clots in the lungs); and the PolyMem® wound dressings, BabySmooth® Diaper Rash Pads, RhinoPak® Nasal Surgery Dressings, as well as Pain Soothing Back Support. Sessions died in April of 2005 and Ferris Mfg. Corp. is now led by his nephew, Dr. Roger Sessions.

Robert W. Sessions



If you have any questions or comments please contact Ferris using one of the following methods.


Toll Free: (800)POLYMEM (765-9636)

International: +1(817)900-1301

Fax: (817)625-4277



5133 Northeast Parkway, Fort Worth, TX 76106-1822 U.S.A.