Disposable balloon type catheter
US4018231A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1975 |
| Grant date | Apr 19, 1977 |
| Priority date | — |
| Expiry date | Jun 2, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/1054
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A tracheal tube adapted for insertion into the trachea of a patient for introducing or removing gas. The tube includes a main inflatable cuff which surrounds the distal end of the tube. A gas passageway communicates at one end with the interior of the cuff, and the other end of the passageway is adapted to receive an inflating means, for delivering gas to inflate the cuff. The gas passageway includes a check valve, and a generally oval pilot balloon is in gas communication with the cuff via the passageway. The pilot balloon is longitudinally pre-stretched between its opposite end portions by means maintaining the pre-stretched condition. Accordingly the balloon in its non-inflated condition is characterized by a series of mutually spaced folds, extending longitudinally between the opposed ends. The ridges of the folds contrast with the troughs between folds, to provide a series of spaced, visually discernible markings which visually signal the non-inflated condition of the main cuff. The cuff itself is preferably pre-stretched between its secured ends, so that it, like the pilot balloon, is characterized in the non-inflated state by longitudinally extending folds. The main cuff is …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.