Inhalation apparatus

• US 4,686,354 A
• Filed: 03/31/1986
• Issued: 08/11/1987
• Est. Priority Date: 04/04/1985
• Status: Expired due to Fees

• Current Assignee: BOC Group BV (Linde Plc)
• Original Assignee: BOC Group BV (Linde Plc)
• Inventors: Makin, Ronald P.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Thronson, Mark
• Application Number:
  US06/846,437
• Time in Patent Office: 498 Days
• Field of Search: 138/103, 174/47, 219/301, 219/271, 219/272, 219/535, 219/544, 219/548, 219/549, 128/203.17, 128/203.27, 128/204.17
• US Class Current: 392/472
• CPC Class Codes: A61M 16/08 Bellows; Connecting tubes having means for taking samples G01N1/22; Water traps; Patient circuits
• CPC Class Codes: A61M 16/1075 by influencing the temperature A61M16/1045 takes precedence
• CPC Class Codes: A61M 16/1085 after being humidified or mixed with a beneficial agent
• CPC Class Codes: A61M 16/1095 in the connecting tubes
• CPC Class Codes: A61M 2205/3368 Temperature

Abstract

A composite flexible delivery hose 1 for use with a medical humidifier comprises an inner tubular member 2 around which is spirally wound a heater cable 4. The heater cable 4 includes an outer body 6 of electrically insulating material in which is embedded an electrical resistance heater wire 8, a wire 10 interconnecting temperature sensors arranged one at each end of the hose and a thermoplastic support wire 12.

Claims

1. A composite, flexible delivery hose for use with a medical humidifier and having temperature sensors arranged one at each end of the hose, said hose comprising an inner flexible tubular member and a heater cable attached to and wound spirally therearound, said heater cable including a first electrical resistance heater wire, a second thermoplastic support wire and a third wire interconnecting said temperature sensors, said first, second and third wires all being imbedded in an outer body of electrically insulating material.