Flexible breathing circuit
US4967744A · kind A · utility
161Cited by
23References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1988 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Nov 3, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/912
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A breathing circuit for providing conduit from a breathing apparatus or anaesthetic device to a patient, the breathing circuit being generally coaxial and including a first flexible tube and a second flexible tube inside the first flexible tube. The first flexible tube has a smooth inner surface and a reinforcing cord or ribbing along its length and integral around its outer surface. The first flexible tube has a relatively thin wall with the cord, which is preferably in a spiral, providing structural strength or stiffness while retaining flexibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.