Safety connection for breathing tubes
US4306743A · kind A · utility
Inventors
Key dates
| Filing date | Mar 24, 1980 |
| Grant date | Dec 22, 1981 |
| Priority date | — |
| Expiry date | Mar 24, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved connector arrangement for breathing circuit endotracheal tubes or the like in which one tube end is inserted into the other tube end. A secure connection is provided by means of a lug, groove and slot arrangement on the adjacent surfaces. When the tubes are moved axially together a lug protruding from one of the surfaces is engaged by a slot in the other and slides along the slot to a circumferential groove, thereby securing the two tubes together so that one can still be moved radially with respect to the other but not be disconnected by an inadvertent force exerted in an axial direction. A quick disconnect capability is provided by having the distance to the groove from the end of the tube along one side of the slot be less than that along the other side of the slot. Rotation of one tube relative to the other in the appropriate direction accompanied by the application of a slight axial pulling force will cause the lug to strike the longer of the two slot walls thereby enabling a quick separation of the two tubes to be made by the subsequent application of an axial pulling force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.