Dural Grafts and Sealants: How the Products Work Together

Dural grafts and sealants do different jobs in the same repair. The graft provides structure, replacing missing dura and giving the surgeon a surface to suture or lay over the defect. The sealant is applied over suture lines and graft edges to support the seal. Surgeons combine them case by case, following each product's IFU.

For distributors and buyers, the relationship between the two product types is a frequent source of confusion. Are they alternatives or partners? Does the graft need a sealant? Which one should the hospital buy? This article explains how the two work together, how surgeons decide when to combine them and how to present a dural graft, such as DESU's DURASHEET or DECOLL, in a department that also uses sealants. Our article on dural sealants and collagen grafts covers the clinical background.

What does each product do?

The two categories have distinct roles.

The simplest way to explain it to a buyer: the graft is the patch; the sealant is the glaze over the seams. In a case with a large defect, the graft is essential. In a case closed primarily, a sealant may be used without a graft. In many cases, both are used.

How do surgeons combine them?

There is no single pattern. Common combinations include:

• A graft sutured into the defect, with a sealant applied over the suture line.
• An onlay graft placed over the defect, with a sealant applied at the edges.
• A primary dural closure without a graft, reinforced by a sealant.
• A graft without any sealant, where the surgeon judges the closure sufficient.
• Layered repairs in which grafts, autologous tissue and sealants are combined, as in skull base reconstruction.

The choice depends on the defect, the location, the condition of the dura, the surgeon's training and the hospital's product availability.

Location plays a large part. In posterior fossa and spinal repairs, where CSF pressure and movement are significant, many surgeons favor a layered approach with both a graft and a sealant. At the convexity, some surgeons rely on a sutured graft alone. In skull base reconstruction, sealants are often one layer among several. Understanding these patterns helps a rep ask the right questions in each department. A rep should never suggest that a graft requires a sealant, or that a sealant can replace a graft, unless the IFU says so.

How do DESU's grafts fit into a combined repair?

DESU's DURASHEET is a suturable dural graft matrix of pure Type I bovine collagen, usable on both surfaces. It suits repairs where the surgeon sutures the graft and may seal the suture line afterwards. DECOLL is a collagen dura membrane of the same material intended for onlay use, suiting repairs where the graft is laid over the defect. Both come in four sizes and are supplied ready to use and gamma sterilized.

DESU's range does not include dural sealants. DESU is a specialist manufacturer of neurosurgical devices and biomaterials, including external drainage systems, shunts, catheters and collagen bone grafts, made in its own cleanrooms under an ISO 13485 quality system. That is worth stating clearly to buyers: a DESU graft will often be used alongside a sealant from another supplier. Questions about how a specific sealant interacts with a specific graft should be answered from both products' IFUs and, where needed, by both manufacturers.

What compatibility questions come up?

Surgeons and nurses sometimes ask whether a particular sealant can be applied to a particular graft. The careful answer is:

Check both IFUs

Each product's IFU describes its intended use and any warnings. If either IFU addresses the combination, follow it. If neither does, the decision rests with the surgeon.

Ask the manufacturers

For product-specific questions, ask DESU about the graft and the sealant's manufacturer about the sealant. Do not guess at chemistry or interactions.

Respect the order of application

Surgeons usually place the graft first and apply the sealant afterwards, but the exact sequence and preparation steps follow each product's instructions and the surgeon's practice.

What should buyers count?

Value analysis often looks at products one at a time. For dural repair, that can be misleading. A more useful view looks at the whole repair:

• Which combination of products does each surgeon typically use in each procedure?
• How much of each product is opened, and how much is discarded?
• Are graft sizes matched to defects, or are large sheets opened and trimmed?
• Are sealants used routinely or selectively?
• How many separate items does the OR need to stock and manage?

A buyer who sees the full picture can make better decisions about both categories. For example, a well-matched graft size range may reduce waste, while a clear protocol on when to use a sealant may reduce unnecessary use. These are decisions for the clinical team, supported by usage data.

Inventory is part of the picture too. Sealants and grafts often have different storage requirements and shelf lives, and both need to be available in the room when the surgeon calls for them. A buyer reviewing dural repair as a whole can plan stock locations and par levels for both categories together, which reduces the chance that one is present and the other is missing.

How should a distributor present a graft in a sealant-heavy department?

Some departments use sealants routinely and think of them first. A graft distributor entering such a department should not compete with the sealant; the products have different roles.

Instead, start with the graft's own role: defects that need structural replacement, cases where the surgeon sutures a patch, onlay repairs. Ask how the surgeon currently combines graft and sealant, and where the current graft is less convenient. Position DURASHEET or DECOLL for those cases. If the department's sealant supplier also supplies grafts, respect that relationship and focus on the cases where a different graft could serve the surgeon better.

It can also help to show that the graft fits the department's existing routine. If the team already applies a sealant over a sutured repair, a suturable graft that is usable on both surfaces and supplied ready to use slots into that routine without adding steps. The surgeon keeps the closure they know; only the graft changes.

Which claims should be avoided?

Combined repairs invite overstatement. Avoid saying that a graft and sealant together "guarantee" a watertight closure, that a graft makes a sealant unnecessary, or that a particular combination performs better than another without published evidence on the products concerned. Describe each product from its documentation and let the surgeon design the repair.

Talk to a DESU product specialist

If you supply dural repair products to departments that use both grafts and sealants, DESU's product specialists can provide documentation for DURASHEET and DECOLL, help you position the graft layer accurately and discuss what your market requires. Write to sales@desu.tr, use the contact page, or request a quote.