Hood Salivary Bypass Tubes are designed to control salivary
leakage from the pharyngocutaneous fistula after total
laryngectomy, and to stent the cervical esophagus following
dilation of a stricture.
Bypass tubes are frequently used in patients with poor
wound-healing due to systemic problems (e.g., poor nutritional
status, metabolic disorders) or regional factors (e.g., post irradiation
changes, recurrent or persistent neoplasm, and chronic
infection). Because of these host factors,
placement of the tubes may be associated
with pressure necrosis of local tissues.
Therefore, patients with these tubes in
place should be monitored carefully by
x-ray and direct inspection if localized
pressure necrosis of regional soft tissue is
The tubes are designed to fit securely
in the superior esophagus and
hypopharynx. However, it is possible
for a loose-fitting tube to be displaced
distally into the esophagus. This may be
prevented by securing the tube to an
indwelling gastric tube.
The Hood Intended Use and Instruction Manual, which is
supplied with each product, provides detailed information
on insertion technique, sterilization, and postoperative care.