T-SHAPED TRACHEAL STENT

• US 3,721,233 A
• Filed: 10/30/1970
• Issued: 03/20/1973
• Est. Priority Date: 10/30/1970
• Status: Expired due to Term

• Current Assignee: Safety Fund National Bank (Toronto-Dominion Bank)
• Original Assignee: Eugene B. Hood, William W. Montgomery
• Inventors: Montgomery, William W., Hood, Eugene B.
• Primary Examiner(s): Pace, Channing L.
• Application Number:
  US05/085,530
• Time in Patent Office: 872 Days
• Field of Search: 128/1R,33R,351
• US Class Current: 128/207.14
• CPC Class Codes: A61M 16/0465 Tracheostomy tubes; Devices for performing a tracheostomy; Accessories therefor, e.g. masks, filters

Abstract

A T-shaped stent for use following surgical reconstruction of the cervical trachea and surgical correction of tracheal and subglottic stenosis. The stent comprises a tubular intraluminal portion and a tubular tracheotomy portion connected thereto between its ends and provided with a removable plug. The tubular portions are of a resiliently yieldable stock enabling the ends of the intraluminal portion to be folded together or against the tracheotomy portion for insertion and removal through a tracheotomy orifice. The intraluminal portion provides internal support for the repaired part of the trachea and the cross sectional area of the tracheotomy portion increases at its junction with the intraluminal portion to an axial extent such that external tapering surfaces are provided for entry into the posterior end of the orifice to provide molding support for and overcorrecting the inferior margin of adjacent portions of the anterior tracheal wall.

Claims

1. A T-shaped stent for insertion through a tracheotomy orifice into a trachea following surgical reconstruction of the cervical portion thereof, and surgical correction of tracheal and subglottic stenosis, said stent comprising an intraluminal tubular portion open at both ends and whose outside diameter is such as to provide a snugly fitting internal support for the reconstructed or corrected part of the trachea, and an integral tracheotomy tubular portion of a diameter less than that of the intraluminal portion and disposed at an angle thereto intermediate the ends thereof and in communication with the interior of said intraluminal portion, and said tracheotomy portion being of a length to project outwardly through a tracheotomy orifice after the disposition of the intraluminal portion within a trachea through said orifice, the junction of the two portions being ovate with its long axis lengthwise of the intraluminal portion and providing external flared shoulders lengthwise of both portions and of substantial axial such as to provide, when the stent is in place, molding surfaces for entry into the interior end of the tracheotomy orifice in molding support of the margin of adjacent margins of the tracheal wall and operable to overcorrect said margins thereby to avoid the protrusion of any resulting scar tissue into the trachea, said stent being of resiliently yieldable stock enabling one end of the intraluminal portion to be folded against the tracheotomy portion or both ends thereof to be folded together for insertion and removal through said orifice, and means releasably closing the exposed end of the tracheotomy portion.

2. The T-shaped stent of claim 1 in which the external molding surfaces of the tracheotomy portion are arcuate with their radius varying with the diameter of the intraluminal portion.