Percutaneous dilational device
US8568436B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2003 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Jun 28, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/1032
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dilator (10) for creating tracheostomies in one pass. Dilator (10) includes a generally linear shaft (12) extending from a proximal end (14) and beginning at a distance therefrom, gradually and continuously through a curved distal portion (16) of continuously decreasing diameter (from about 38 french) to a distal tip portion (18) of small diameter of about 12 french at distal end (20). The outer surface of the insertable portion is treated or hydrophilically coated to minimize friction, and the gradual taper gradually widens the tracheal entrance opening (44) between tracheal rings (46,48) with minimal trauma. The wall thickness gradually decreases from the linear shaft (12) to the soft distal tip portion (18). The continuing curve of the distal portion (16) enables the increasingly longer inserted portion of the dilator to remain situated in the trachea (50) during insertion and for the distal tip portion to clear the posterior tracheal wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.