Developed for: Mr. Sarwat Sadek, FRCS, Consultant ENT Surgeon, Taunton, Somerset, UK
The device is intended to allow the surgically fashioned choanae to heal without restenosing after surgery, whilst, at the same time, allowing the patient to breathe.
- The stent is made of implantable silicone rubber and should not cause granulation tissue formation. It is designed to protrude beyond the posterior nares and will resist the ongrowth of contiguous tissue.
- There is no need to suture the stent. It can be placed quickly, which reduces the procedure time by half. It is stable in the nose and does not hinder epithelialization by excessive movement.
- Pressure on the columella is avoided by an adjustable flange, which is important as the baby grows.
- The stent can be safely left in place for three months.
- A larger stent is available, in case of need.
- Removal does not require another general anaesthetic.
Extract from page 30 of 'The British Association for Paediatric Otorhingology Annual Academic Meeting' 8 September 2006 - Birmingham
A New Stent for use in Children with Choanal Atresia
Sanjeet Agrawal, Sarwat Sadek
Musgrove Hospital, Taunton
Choanal Atresia is a congenital condition with obliteration of the posterior nasal apertures. A number of techniques have been described to cannulate the posterior nares. The use of stents remains controversial. Traditionally endotracheal tubes have been fashioned for this purpose. They can cause a foreign body reaction and infection resulting in granulation tissue formation and restenosis. However, stents are important in maintaining the patency of nares post-operatively and may reduce the number of recannulation procedures required. A new stent for use in children with Choanal Atresia is described (Sadek Choanal Atresia Stent).
The stent is made of silicon. It is inert and should not cause granulation tissue formation. It is designed to protrude beyond the posterior nares and thought to reduce the likelihood of tissue overgrowth. There is no need to suture the stent. Itcan be placed quickly which reduces the procedure time by half. It is stable in the nose and does not hinder epithelialization by excessive movement. Pressure on the columella is avoided by an adjustable flange which is important as the baby grows. The stent can be safely left in place for 3 months. Removal does not require another general anaesthetic.
This stent is a new product currently undergoing evaluation in a number of tertiary centres.
We believe that this stent has a number of advantages over the use of endotracheal tubes.
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