Patent · US Active

Tracheostomy tube assemblies and inner cannulae

US10603454B2 · kind B2 · utility

0Cited by

1References

9Claims

0Family size

Assignee

Smiths Medical International Limited · GB

Inventors

Timothy Bateman · Leawood, US
Steven James Field · Canterbury, GB
Andrew Thomas Jeffrey · Lörrach, DE
Neil Steven Veasey · Ashford, GB
Christopher John Woosnam · Ellesmere Port, GB

Key dates

Filing date	Apr 2, 2016
Grant date	Mar 31, 2020
Priority date	—
Expiry date	Feb 22, 2037

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2025/0006
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A tracheostomy tube assembly comprises an outer tracheostomy tube (1) and an inner cannula (20) fitted in the tube. The machine end of the inner cannula has a collapsible region (22) formed by a plurality of curved or bent struts (26) extending parallel with one another between a machine end collar (28) and a patient end collar (27). The struts (26) carry outwardly-projecting catches (23) arranged to engage a rib (24) extending around the inside of a hub (16) at the machine end of the tube and thereby resist removal of the cannula from the tube. The inner cannula (20) is removed by twisting the machine end collar (28) so that the struts (26) collapse inwardly and thereby disengage the catches (23) from the rib (24).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.