Tracheostomy tube with ring pull removable inner cannula
US4817598A · kind A · utility
61Cited by
20References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 8, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Jun 8, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/0465
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A removable inner cannula is provided with grooved-ribbed locking member end for snap-fit interconnection inside an outer cannula. The inner cannula includes a ring-pull grasping member associated with the locking member which is easily accessible for withdrawal of the inner cannula from the outer cannula connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.