Chambers in which variables are locked for safety

Color touch panel A color touch panel allows an operator to understand the operation screen contents at a glance. Electro-mechanical lid lock system The lid can be opened and closed easily and reliably with the one-touch lever.

A pressure seal method is used as a safety measure. Dual interlock mechanism The lid is locked by dually detecting the chamber pressure and chamber temperature during operation. The lock state is maintained even if an operation is manually interrupted.

Memory function Up to 8 patterns for each mode can be registered according to the purpose of use. The lid lock release temperature setting The lid lock release temperature can be set up for each mode or program to secure safety at the time of unloading. Air removal time setting It is effective for sterilization of Durham tubes etc.

Dual detection system for residual air The residual air which may cause sterilization failure is dually detected to always maintain the appropriate sterilization conditions for loads. Forced cooling unit option After sterilization, the chamber pressure is lowered by cooling with a forced cooling unit air-cool to shorten the time to unloading. Programmable auto-start function It is a timer function that starts an operation at the set time.

Household outlets are not recommended. A color touch panel allows an operator to understand the operation screen contents at a glance.

Confirmation items are notified at startup. A mode can be selected simply by touching the screen. When the power is turned on, the confirmation items before use are displayed. You can reduce the trouble by implementing the confirmation items. A mode can be selected with the simple operation of tou- ching the desired mode from 5 modes displayed on the color touch panel and pressing the start button. Color display makes it easier to understand various settings. The settings of temperature, time, warming and exhaust can be easily changed by touch operation while checking the color screen.

The set contents can be registered up to 8 patterns. It is very convenient when sharing and using with a plurality of names. More detailed contents are shown by text information. The effect of altitude on vaporizer performance is controversial.

Dorsch and Dorsch Understanding Anesthesia Equipment 5th ed. Some sources state that variable bypass types need not be adjusted for moderate changes in barometric pressure, but the Tec 6 must be dialed up beyond the desired dose at higher altitudes. Other sources disagree. Note that nitrous oxide is less useful as altitude increases, since it becomes more difficult to supply adequate pO2 using N2O when total atmospheric pressure declines. For either funnel or keyed filler types, fill the vaporizer only to the top etched line within the sight glass.

Do not hold the bottle up on a keyed filler until it stops bubbling this will overfill the chamber, particularly if the concentration control dial is "on", or if leaks are present. The only current vaporizer which can be filled while it is operating is the Tec 6 Desflurane but even that vaporizer is safer to fill in the "off" position.

But why remember this particular exception? It's safest to fill any vaporizer only when it is "off. Typically, 1 mL of liquid volatile agent yields about mL vapor.

This is why tipping is so hazardous- it discharges liquid agent into the control mechanisms, or distal to the outlet.

And minute amounts of liquid agent discharged distal to the vaporizer outlet result in a large bolus of saturated vapor delivered to the patient instantaneously. Vapor Click on the thumbnail, or on the underlined text, to see the larger version 68 KB.

The Vapor is one of two tippable vaporizers Aisys cassettes are the other. The dial must first be rotated to a "T" setting "transport" or "tip" which is beyond zero clockwise as viewed from above.

Click on the thumbnail, or on the underlined text, to see the larger version. The Vapor is also tippable. The dial must first be rotated to a "T" setting "transport" or "tip" which is beyond zero clockwise. Tec 7. Aladin vaporizer. Click on the thumbnail, or on the underlined text, to see the larger version KB.

Aladin vaporizer Aisys Cassettes containing each volatile liquid anesthetic are inserted into a port containing the central electronic control mechanism, which recognizes the contents of the cassette and dispenses agent into the stream of fresh gas flow. Because each cassette is only a liquid sump without control mechanisms, they can be tipped in any orientation without danger, and they are maintenance free.

The cassette and the control mechanisms are checked as part of the electronic equipment checklist daily. The Aladin will not deliver volatile agent without mains power or battery backup, and adequate oxygen or air pressure. The output of older vaporizers varies slightly with changes in fresh gas mixture, whereas the Aladin compensates for this automatically.

The Aisys has low agent alarms on all vaporizers. The cassettes are extremely light, and may be removed with one hand. For a study of this vaporizer's performance, see Anesth Analg ; Tec 6 vaporizer. Tec 6 desflurane vaporizer : Because of the volatility of this agent, new systems were designed to contain, transfer, and vaporize it.

This means that desflurane is nearly boiling at room temperature. Note that not all desflurane vaporizers are Tec 6 type. The Aladin cassette Aisys, Avance is a variable bypass vaporizer. Function : Heats agent to 39 degrees C, which produces a vapor pressure of around mm Hg. Electronic controls inject pure vapor into the fresh gas flow from the flowmeters, controlled by the concentration control dial, and a transducer which senses the fresh gas flow rate, and adjusts the vapor output accordingly.

Requires electrical power it shuts off in power failures! In use it is similar to variable bypass vaporizers: it fits in the interlocks, and is mounted on the back bar in a similar way. The operator's manual states that it may be filled during use but it is safer to turn it off when filling. A mark on a liquid crystal display indicates when the liquid level is one bottle low mL.

The user must replace a battery which powers the alarms periodically. There is an alarm for low liquid level. The unit requires a warm-up period.