Anesthetic gas vaporizer with a connection arrangement for a collar-equipped gas bottle

A connection arrangement for a collar-equipped bottle in an anesthetic vaporizer, said connection arrangement comprising:

• a receiving part having a tubular section with a tube wall and an interior cavity, said tube wall having a through opening therein adapted to allow a collar of a gas bottle to move through the opening when the bottle is inserted into said receiving part, said opening extending at an angle relative to a center line of said tubular section;
• a locking device adapted to interact with the collar of the bottle as the bottle is inserted into said receiving part, said locking device comprising a resilient locking element having a circular arc and two radially disposed parallel ends connected thereto, said locking element partially disposed in said opening and assuming, in a passive state, a first position inside said interior cavity preventing unimpeded passage of said collar and, when acted upon, being axially downwardly and radially outwardly movable in said opening to a second position in said cavity allowing unimpeded passage of said collar past said locking element;
• and
• an actuatable spreading arrangement disposed for acting upon said locking element for, when actuated, spreading said resilient locking element to allow unimpeded passage of said collar therethrough.