Anesthetic apparatus
US4538605A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1983 |
| Grant date | Sep 3, 1985 |
| Priority date | — |
| Expiry date | Mar 8, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/91
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An anesthetic apparatus for administering a gaseous anesthetic comprises a breathing mask which is connected to the inspiration pipe and the expiration pipe of the apparatus and used for connecting the apparatus to the airways of a patient. To prevent harmful gaseous anesthetic from being released to the surroundings when the mask is temporarily lifted from the patient's face during anesthesia in order to check the condition of the patient, the apparatus is provided with a gas suction device which can be connected to the mask through a controllable valve. The gas suction device may be continuously operated or may be started automatically when the valve is opened. A signal emitter for generating control signals and applying these to the valve is arranged on, or in the vicinity of the mask in a manner such that it can either be activated manually by the anesthetist, or is activated automatically when the mask is lifted from the patient's face, at which time it generates a control signal for opening the valve. In this way, the suction device is connected with both the inspiration pipe of the anesthetic apparatus and with the mask, whereby all gaseous anesthetic supplied through the in…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.