ANESTHETIC VAPORIZER

• US 3,651,805 A
• Filed: 05/07/1970
• Issued: 03/28/1972
• Est. Priority Date: 05/12/1969
• Status: Expired due to Term

• Current Assignee: Hans Georg Breiling
• Original Assignee: Hans Georg Breiling
• Inventors: Breiling, Hans Georg
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): Mitchell, J. B.
• Application Number:
  US05/035,534
• Time in Patent Office: 691 Days
• Field of Search: 128/188,186,189,190,196,197,209-211 261/39,46,79,99,104,DIG.65
• US Class Current: 128/203.25
• CPC Class Codes: A61M 16/18 Vaporising devices for anaesthetic preparations

Abstract

An anesthetic vaporizer includes a housing for the anesthetic fluid which includes an inlet passage having a connection for a first bypass flow and a second pressure compensation flow within the housing. The pressure compensation flow is through a spiral tube which leads into a chamber for the anesthetic fluid and the bypass flow is directly to the discharge of the device. The control also includes a flow control valve from the fluid chamber which provides for a flow of the fluid from the chamber to the discharge in accordance with the temperature conditions of the fluid within the chamber.

Claims

1. An anesthetic vaporizer comprising a housing defining a chamber for an anesthetic fluid, a housing inlet and a housing discharge, first passage means in said housing from said inlet to said discharge, second passage means in said housing from said inlet through said chamber to said discharge, control valve means for said first and second passages for regulating the flow of fluid from said inlet through said first and second passage means to said discharge, a movable piston valve member in said inlet being movable for regulating the flow of fluid from said inlet into said first passage means, and a movable actuator member connected to said control valve means for adjusting said control valve means and being movable to engage said movable piston valve member for shifting said piston valve member to vary the flow of fluid into said first passage means, said control valve means comprising a first movable valve member having an expansible portion disposed in said fluid chamber and being movable upon expansion and contraction of said expansible portion, a second movable valve member concentrically arranged around said first valve member and defining therewith a portion of said second passage means extending from said inlet to said fluid chamber and from said fluid chamber to said discharge, said second movable valve member also defining a portion of said first passage means from said inlet to said discharge, said movable actuator member comprising a hand wheel rotatably engaged with said second movable valve member and having a portion overlying said piston valve member and engageable with said piston valve member for shifting said piston valve member during rotation thereof.