Collagen Dural Grafts for US Distributors: DURASHEET and DECOLL

DESU offers two collagen dural grafts: DURASHEET, a suturable dural graft matrix that can be used on both surfaces, and DECOLL, a collagen dura membrane intended for onlay use. Both are made of pure Type I bovine collagen, come in four sizes, are ready to use and gamma sterilized, and are manufactured by DESU under ISO 13485.

That is the short version. The rest of this article is written for the people who would carry the line: independent neurosurgery and spine agencies, regional distributors and the hospital buyers they serve. It covers what the two products are, how they differ, why a two-product structure is useful in the field, and what to clarify with the manufacturer before you take the line into your accounts.

What exactly are DURASHEET and DECOLL?

Both products belong to the same family. They are dural substitutes made from natural, pure Type I bovine collagen, the same structural protein that makes up much of the connective tissue a surgeon works with every day. Neither product contains a synthetic polymer backbone, and neither needs to be assembled or mixed in the operating room.

DURASHEET is described by DESU as a dural graft matrix. It is suturable, which means the surgeon can fix it to the dural edge with sutures, and it can be used on both surfaces, so the scrub team does not need to identify an up side and a down side before handing it over.

DECOLL is a collagen dura membrane intended for onlay use: it is laid over the dural opening and overlaps the edges, without being sewn in. Surgeons who prefer onlay technique for suitable defects will look at it first.

How do the two membranes differ?

For a sales conversation, the difference is about technique rather than material. The table below summarizes what DESU states for each product.

The practical message to a surgeon is simple. If the plan is to sew the graft to the dura, the conversation starts with DURASHEET. If the plan is an onlay repair, it starts with DECOLL. In departments where both techniques are used, both products can sit on the same shelf without overlapping.

For exact dimensions, packaging and indications, always work from the current DESU catalog and the Instructions for Use rather than from memory. The e-catalog is the starting point, and DESU's specialists can send the IFU for each product.

Why does a two-product line matter to a distributor?

Dural grafts can look like a commodity from the purchasing office. Many products are sold as "a collagen patch", and the buyer sees little reason to change. A line that is split by technique gives the rep something specific to talk about with each surgeon.

• It gives a reason for the first meeting: "How do you close the dura in this procedure?" is a better opening than "Would you like to see another patch?"
• It keeps the product choice aligned with surgical habit instead of asking a surgeon to change technique to suit a product.
• It lets a single vendor cover both sutured and onlay repairs, which simplifies vendor setup and contracting for the hospital.
• It creates two separate evaluation paths, so a department can test one product without committing to the whole line.
• It gives value-analysis teams a clear rationale for carrying two items rather than one, because each item matches a defined use.

None of this replaces clinical judgment. The surgeon decides how to close the dura. A well-structured line simply makes it easier for the distributor to support that decision with the right product.

Who is the manufacturer behind the line?

Distributors and hospital buyers tend to ask the same question early: who actually makes this, and will they still be there in five years? The facts are straightforward.

DESU was founded in 2007 as an R&D company at Hacettepe Teknokent in Ankara, Türkiye. It designs and manufactures its devices in its own cleanrooms, with 5,000 m² of production space. Its quality management system is certified to ISO 13485, its products carry the CE mark, and it exports to more than 50 countries, with product registrations in 34.

Collagen dural grafts are only part of the portfolio. DESU also makes external ventricular drainage systems, shunts, catheters and collagen bone grafts. For a neurosurgery-focused agency, that means one manufacturer relationship can cover several product categories that are used by the same surgeons and bought by the same departments.

Because DESU is the manufacturer rather than a trading company, questions about materials, sterilization, documentation or packaging go to the people who designed and produce the product. That shortens the loop when a value-analysis committee or a surgeon asks something the brochure does not answer.

Which accounts are the natural first conversations?

A new dural graft line rarely wins on a cold call to a purchasing office. It wins through a surgeon who is willing to evaluate it and a department that has a reason to look. Good first targets usually include:

• Neurosurgery departments with a high volume of cranial cases, where duraplasty is routine and both onlay and sutured techniques are used.
• Spine practices that encounter incidental durotomies and want a graft option available without delay.
• Academic centers with residency programs, where surgeons compare materials and techniques openly.
• Trauma centers, where decompressive procedures and dural reconstruction happen at all hours and product availability matters.
• Hospitals reviewing their dural substitute contracts, where a second source is welcome during value analysis.

In each case, the conversation should start with the surgeon's technique and the department's current pain points, not with the product. Once you know whether the surgeon sutures or onlays, the choice between DURASHEET and DECOLL follows naturally.

What should you ask DESU before you commit?

A serious distributor should treat the first discussion with a manufacturer as due diligence. Useful questions include:

• Which documentation is available for each product, and in what form: certificates, IFU, labeling, technical summaries?
• What sizes and packaging configurations are available, and how are they coded?
• What does a realistic lead time look like for your expected order pattern?
• How does DESU support training for your reps and for OR teams?
• How are complaints, feedback and traceability questions handled between distributor and manufacturer?
• What does DESU need from you to discuss your specific market and accounts?

The last question matters most. Market requirements differ, and a responsible manufacturer will want to understand your territory, your customer base and your plans before making any commitment. That conversation is the right place to raise market-specific questions, rather than relying on assumptions.

What makes the line worth evaluating?

The argument for evaluating DURASHEET and DECOLL does not rest on bold claims. It rests on a few concrete points: a pure Type I bovine collagen material; two products that map to the two main dural repair techniques; four sizes of each; ready-to-use, gamma-sterilized packaging; and a manufacturer with its own cleanrooms, an ISO 13485 quality system and a long export history.

For distributors, there is also the relationship. Working directly with the manufacturer means faster answers, clearer documentation and a partner who has a direct interest in the line succeeding in your territory. You can read more about the material itself in our article on bovine collagen safety.

Talk to a DESU product specialist

If you represent a distribution company, an independent neurosurgery or spine agency, or a hospital team reviewing dural substitutes, DESU's product specialists can walk you through DURASHEET and DECOLL, share documentation and discuss what your market requires. Write to sales@desu.tr, reach us through the contact page, or request a quote to start the conversation.