© Copyright 2026 American Medical Association. All rights reserved.
A tissue expander is a medical device used in reconstructive surgery to stretch the skin and underlying tissue in preparation for a future surgical procedure. This device resembles a balloon and is designed to be gradually filled with a saline solution over a series of visits. The primary purpose of the tissue expander is to create additional skin and tissue that can be used for reconstruction, which may be necessary after trauma, surgery, or congenital conditions. The procedure begins with the creation of an incision at the designated site, where the subcutaneous tissue is carefully separated from the underlying muscle. Once the area is adequately prepared, the tissue expander is inserted into the newly created space. After insertion, the incision site is closed, and the expander remains in place for a period of time. During follow-up appointments, the physician will gradually inflate the expander with saline, allowing the skin to stretch and accommodate the desired reconstruction. This process is crucial for ensuring that there is enough tissue available for the final reconstructive surgery, which will take place once the tissue has been sufficiently expanded.
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