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| US4763645 | 25 Ago 1987 | 16 Ago 1988 | | Tracheal tube filter |
| US4802474 | 4 Sep 1987 | 7 Feb 1989 | | Protective cover for tracheotomy tube |
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| US5010884 | 10 Sep 1990 | 30 Abr 1991 | | Expandable metal tracheostomy band |
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| US5186168 | 6 Jun 1990 | 16 Feb 1993 | | Transtracheal catheter system and method |
| US5445145 | 18 Oct 1994 | 29 Ago 1995 | | Apparatus to manually open and close a shutter-like device for tracheostomy patients to facilitate breathing |
| US5507809 | 5 Nov 1993 | 16 Abr 1996 | Hansa Medical Products, Inc. | Multi-valved voice prosthesis |
| US5840091 | 9 Jun 1997 | 24 Nov 1998 | Steve Culpepper | Smog and dust filter for a tracheostomy tube |
| US5950620 | 29 Jun 1998 | 14 Sep 1999 | | Resuscitation device for use with stomas |
| US6789542 | 22 Feb 2002 | 14 Sep 2004 | Bischoff Medical Devices, LLC | Decorative valved tracheostomy device |
| US7021314 | 19 Jul 2004 | 4 Abr 2006 | | Stoma stent with integrated speech flap valve |
