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A Review of Recent Patents on Structures Related to Tracheal Stents



The trachea is an important part of the respiratory system. Long-term airway
diseases and the effects of human physiological conditions can cause trachea stenosis. This will seriously affect patients’ physical health. Tracheal stents can provide durable support by means of dilating
the narrowed area; they can effectively relieve the patient's breathing difficulties, which is of value that
is more practical.



To meet the vital requirements for better adaptation to the human airway environment and
prevent complications associated with stent placement, the construction and materials of tracheal stents
have been improved constantly.



This paper investigates various representative patents related to the tracheal stent. The structure type, placement method and applications situation of these tracheal stents are discussed.



 The characteristics of different types of tracheal stents are analyzed. This paper analyzes the
main problems in its development. The solutions to the issues and the current and future research on
tracheal stents are discussed.



The tracheal stents are classified into metal stent, silicone stent, biodegradable stent and
hybrid material stent. Further improvements are needed in the aspects of structural design, safety, applicability, biocompatibility, algorithm of drive model of tracheal stent. More related patents about
tracheal stents need to be developed.
