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Double-bend needle modification for transthyrohyoid vocal fold injection
Jihad Achkar1, Phillip Song, Jennifer Andrus
1Division of Laryngology, Department of Otology and Laryngology, Massachusetts Eye and Ear Infirmary and Harvard Medical School, Boston, Massachusetts 02114-3096, USA.
The Laryngoscope
|February 21, 2012
Summary
A modified double-bend needle enables precise vocal fold injections in awake patients. This percutaneous transthyrohyoid technique improves access and depth measurement for vocal fold treatments.
Area of Science:
- Otolaryngology
- Medical Device Innovation
Background:
- Vocal fold injections are crucial for voice restoration.
- Current methods can be limited by patient positioning and anatomical variations.
Purpose of the Study:
- To describe a novel double-bend needle modification for percutaneous vocal fold injections.
- To evaluate its utility in awake, in-office procedures.
Main Methods:
- A 25-gauge, 1.5-inch needle was modified with two 45° bends.
- The modified needle was used for percutaneous transthyrohyoid vocal fold injections under local anesthesia.
Main Results:
- The double-bend needle provided full access to the vocal fold surface.
- The distal bend served as a depth measurement marker.
- The technique allowed for complete vocal fold access in a single pass.
Conclusions:
- This needle modification facilitates accurate and efficient vocal fold injections.
- It offers improved access and depth control for in-office procedures.
- Potential limitations include bleeding, insufficient length, and calcified membranes.
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