Collagen Dural Grafts After Spinal Tumour Surgery

Dural graft options after spinal tumour surgery: how DECOLL and DURASHEET collagen membranes compare, which sizes suit a long defect and what the team prepares.

A collagen dural graft is used after spinal tumour surgery when the dura cannot simply be closed on itself, for example where the tumour’s dural attachment was removed. DESU’s two collagen dural grafts, DECOLL and DURASHEET, both cover this use. Both are pure Type I bovine collagen and can be applied as an onlay; DURASHEET is also suturable.

Key takeaways

• DECOLL and DURASHEET are both used for dural defects after spinal tumour surgery.
• Both are pure Type I bovine collagen, in four sizes, ready to use and gamma sterilised.
• Both can be applied as an onlay; DURASHEET is also suturable and usable on either surface.
• For a long, narrow spinal defect, compare the longest side of each size as well as its area.

On the product side, the questions are how DESU’s two dural grafts compare and how the sizes relate to a spinal defect. The operative steps are covered in dural closure after intradural spinal tumour surgery. Whether a graft is needed, and how it is placed, is the surgeon’s decision under the instructions for use.

Why can spinal tumour surgery leave a dural defect?

Reaching an intradural tumour means opening the dura of the spinal canal. Often the edges can be brought back together directly. A graft is considered when they cannot, or when closing them would narrow the dural sac. Typical situations include:

• A dural attachment that has been removed with the tumour.
• Dura infiltrated by tumour, where part of it has to be excised.
• A swollen spinal cord, where a patch gives the sac more room.

Which DESU dural grafts cover this use?

Both do. DECOLL and DURASHEET have the same five uses:

• Dural defects after spinal tumour surgery.
• Dural defects after trauma.
• Meningocele.
• Myelomeningocele.
• Surgical dural defects associated with lipoma.

So the choice between them does not rest on this indication. It rests on how the surgeon intends to place the graft.

How do DECOLL and DURASHEET compare for a spinal defect?

When does suturing or onlay matter in the spine?

The spinal dura is a narrow tube, and access to it is limited by the width of the exposure. That shapes how a graft is placed:

• Sutured repair: where the surgeon plans to fix the graft to the dural edges, DURASHEET is the suturable DESU graft.
• Onlay repair: where the graft is to be laid over the defect, either product can be used as an onlay.
• Decided at surgery: where the plan depends on what the dura looks like after resection, DURASHEET, which can be laid as an onlay or sutured, keeps both routes open.

Being usable on either surface removes one check when DURASHEET is handed over in a narrow field. Which technique suits a particular tumour type is the surgeon’s judgement.

Which size suits a spinal defect?

Both grafts share the same four sizes. For a broad defect, area is the natural comparison. A spinal defect is often long and narrow, so the longest side can matter as much.

Measure the defect once it is fully exposed, then add whatever margin the technique and the instructions for use require. Because the graft is square, a long defect may call for a larger sheet than its area alone suggests. Our guide to dural graft size selection for spinal vs cranial defects goes through this in more detail.

What role does the membrane play in CSF leakage?

The impermeable pore structure forms a barrier at the repair site and supports control of CSF leakage. The biodegradable collagen structure is designed to support the healing process.

That describes how the membrane is designed, not a guaranteed result. A graft does not replace careful closure, and it is one part of a repair that may also involve a layered soft-tissue closure, a sealant or, in some cases, short-term drainage with a lumbar drainage catheter kit. Those are the surgeon’s choices.

Should a spine service stock both grafts?

That depends on how its surgeons close. A service that always uses an onlay can work with either product. Where a surgeon sutures the graft, or decides at surgery, DURASHEET covers both. Stocking both means eight codes, which is manageable if each surgeon’s preference card names the product and usual size.

What should the theatre team prepare?

A short checklist helps when the graft is an unplanned decision late in the case:

• The planned product, from the surgeon’s preference card, and one size up if the defect is uncertain.
• No pre-processing is needed: both products are supplied ready to use and gamma sterilised.
• Sutures to the surgeon’s preference, if a sutured DURASHEET repair is planned.
• The hospital’s implant record, ready for the product, size and lot.

Talk to a DESU product specialist

If your spine or neurosurgery team is reviewing grafts for spinal tumour cases, our product specialists can help with sizes, codes and documentation. Write to sales@desu.tr, use the contact page, or request a quote.

Frequently asked questions

Is one DESU graft recommended for spinal tumour surgery?

No. DECOLL and DURASHEET have the same use, and neither is the preferred graft. The practical difference is that DURASHEET is suturable and usable on either surface.

Do the grafts need soaking before use?

Both are supplied ready to use and need no pre-processing before application. Follow the instructions for use supplied with the product for preparation and handling in the surgical field.

What is the largest single graft available?

The largest size of both DECOLL and DURASHEET is 10 × 10 cm, under the codes DCL100100 and DRS100100. The smallest is 2.5 × 2.5 cm.

Are the grafts resorbed?

Both have a collagen-based, biodegradable structure. For what happens to the membrane after surgery, the instructions for use are the reference, and our product specialists can answer specific questions.

Related standards

• ISO 22442 series: Medical devices utilizing animal tissues and their derivatives
• ISO 11137 series: Sterilization of health care products — Radiation
• ISO 10993 series: Biological evaluation of medical devices