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Clinical and laboratory evaluation of a new thin-walled self-expanding tracheobronchial silicone stent: Progress and pitfalls  Klaus Wassermann, MDa,

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Presentation on theme: "Clinical and laboratory evaluation of a new thin-walled self-expanding tracheobronchial silicone stent: Progress and pitfalls  Klaus Wassermann, MDa,"— Presentation transcript:

1 Clinical and laboratory evaluation of a new thin-walled self-expanding tracheobronchial silicone stent: Progress and pitfalls  Klaus Wassermann, MDa, Andrea Koch, MDa, Jochen Müller-Ehmsen, MDa, Martin Reuter, MDa, Olaf Michel, MDb, Hans-Edmund Eckel, MDb  The Journal of Thoracic and Cardiovascular Surgery  Volume 114, Issue 4, Pages (October 1997) DOI: /S (97) Copyright © 1997 Mosby, Inc. Terms and Conditions

2 Fig. 1 Polyflex prototype stents of variable lengths and diameters.
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (97) ) Copyright © 1997 Mosby, Inc. Terms and Conditions

3 Fig. 2 A, Top, Stent, basket, and applicator sheath. Bottom, Introduction of stent into applicator by means of a basket. B, Top to bottom, Release of the stent into an obstructed airway segment. The tip of the operative laryngoscope is located at the vocal cord level. Inset, Details of stent release. See text for further information. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (97) ) Copyright © 1997 Mosby, Inc. Terms and Conditions

4 Fig. 2 A, Top, Stent, basket, and applicator sheath. Bottom, Introduction of stent into applicator by means of a basket. B, Top to bottom, Release of the stent into an obstructed airway segment. The tip of the operative laryngoscope is located at the vocal cord level. Inset, Details of stent release. See text for further information. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (97) ) Copyright © 1997 Mosby, Inc. Terms and Conditions

5 Fig. 3 A, Patient 19. Tracheal stent covering granulation-induced stenosis. The passage from the proximal nonstented portion of the tracheal segment to the distal portion is step-shaped. The stent adapts smoothly to the narrowing airway lumen. B, Patient 3. Two overlapping serial stents in the trachea. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (97) ) Copyright © 1997 Mosby, Inc. Terms and Conditions

6 Fig. 3 A, Patient 19. Tracheal stent covering granulation-induced stenosis. The passage from the proximal nonstented portion of the tracheal segment to the distal portion is step-shaped. The stent adapts smoothly to the narrowing airway lumen. B, Patient 3. Two overlapping serial stents in the trachea. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (97) ) Copyright © 1997 Mosby, Inc. Terms and Conditions

7 Fig. 4 SEM. A, Prototype stent, outer surface. (Magnification 24.9×.) B, Piece of a torn and infolded membrane, outside. Rupture lines at the top of empty fiber channels (arrowheads). (Magnification 10.1×.) C, Early prototype stent, inner (luminal) surface, bird's eye view. (Magnification 249×.) D, Latest prototype stent, luminal surface. (Magnification 501×.) The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (97) ) Copyright © 1997 Mosby, Inc. Terms and Conditions

8 Fig. 4 SEM. A, Prototype stent, outer surface. (Magnification 24.9×.) B, Piece of a torn and infolded membrane, outside. Rupture lines at the top of empty fiber channels (arrowheads). (Magnification 10.1×.) C, Early prototype stent, inner (luminal) surface, bird's eye view. (Magnification 249×.) D, Latest prototype stent, luminal surface. (Magnification 501×.) The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (97) ) Copyright © 1997 Mosby, Inc. Terms and Conditions

9 Fig. 4 SEM. A, Prototype stent, outer surface. (Magnification 24.9×.) B, Piece of a torn and infolded membrane, outside. Rupture lines at the top of empty fiber channels (arrowheads). (Magnification 10.1×.) C, Early prototype stent, inner (luminal) surface, bird's eye view. (Magnification 249×.) D, Latest prototype stent, luminal surface. (Magnification 501×.) The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (97) ) Copyright © 1997 Mosby, Inc. Terms and Conditions

10 Fig. 4 SEM. A, Prototype stent, outer surface. (Magnification 24.9×.) B, Piece of a torn and infolded membrane, outside. Rupture lines at the top of empty fiber channels (arrowheads). (Magnification 10.1×.) C, Early prototype stent, inner (luminal) surface, bird's eye view. (Magnification 249×.) D, Latest prototype stent, luminal surface. (Magnification 501×.) The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (97) ) Copyright © 1997 Mosby, Inc. Terms and Conditions

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