Apparatus for reinforcing a breathing circuit component

• US 20060162726A1
• Filed: 03/09/2006
• Published: 07/27/2006
• Est. Priority Date: 05/10/2000
• Status: Abandoned Application

• Current Assignee: Fisher & Paykel Healthcare Limited
• Original Assignee: Fisher & Paykel Healthcare Limited
• Inventors: Baldwin, David Peter, Powell, Kevin Blake, Millar, Gavin Walsh, Smith, Daniel John
• Application Number:
  US11/371,389
• Publication Number:
  US 20060162726A1
• Time in Patent Office: Days
• US Class Current: 128/203.160
• CPC Class Codes: A61M 16/08 Bellows; Connecting tubes having means for taking samples G01N1/22; Water traps; Patient circuits
• CPC Class Codes: A61M 16/0808 Condensation traps
• CPC Class Codes: A61M 16/0833 T- or Y-type connectors, e.g. Y-piece
• CPC Class Codes: A61M 16/0875 Connecting tubes
• CPC Class Codes: A61M 16/0883 Circuit type
• CPC Class Codes: A61M 16/1045 Devices for humidifying or heating the inspired gas by using recovered moisture or heat from the expired gas
• CPC Class Codes: A61M 16/1065 in the expiratory path
• CPC Class Codes: A61M 2039/082 Multi-lumen tubes
• CPC Class Codes: A61M 2205/7536 allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
• CPC Class Codes: A61M 2207/00 Methods of manufacture, assembly or production
• CPC Class Codes: A61M 2207/10 Device therefor
• CPC Class Codes: A61M 2230/432 partial CO2 pressure (P-CO2)
• CPC Class Codes: A61M 39/08 Tubes; Storage means specially adapted therefor
• CPC Class Codes: B29C 48/0019 combined with shaping by flattening, folding or bending
• CPC Class Codes: B29C 48/04 Particle-shaped making granules B29B9/00
• CPC Class Codes: B29C 48/07 Flat, e.g. panels
• CPC Class Codes: B29C 48/09 Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
• CPC Class Codes: B29C 48/301 having reciprocating, oscillating or rotating parts
• CPC Class Codes: B29C 48/32 with annular openings, e.g. for forming tubular articles
• CPC Class Codes: B29C 53/585 the cross-section varying along their axis, e.g. tapered, with ribs, or threads, with socket-ends
• CPC Class Codes: B29C 53/64 : and moving axially
• CPC Class Codes: B29C 53/68 : with rotatable winding feed member
• CPC Class Codes: B29C 53/70 : and moving axially
• CPC Class Codes: B29L 2023/007 : Medical tubes other than catheters catheters B29L2031/7542
• CPC Class Codes: B29L 2031/753 : Medical equipment; Accessories therefor bloodbags, medical bags B29L2031/7148; artificial eyes B29L2011/0008

Abstract

A breathing circuit component includes an inlet, an outlet and an enclosing wall. The enclosing wall defines a gases passageway between the inlet and the outlet. At least a region of the enclosing wall is formed from a breathable material that allows the passage of water vapour without allowing the passage of liquid water or respiratory gases. The breathing circuit component is the expiratory limb of a breathing circuit.

Claims

1. Apparatus for forming a breathing circuit conduit comprising:

a former, onto which a tube wall can be deposited and which advances said deposited tube wall in an advance axis and rotates said deposited tube wall about said advance direction, the speed of said advance and the speed of said rotation together defining a pitch,

at least one film laying head which deposits a film on said former, the combined width of said film deposited by said film laying heads being wider than said pitch such that adjacent turns of laid film overlap to form an overlap seam,

a bead laying head for each said film laying head, each said bead laying head laying a reinforcing bead on an overlap seam,

an axial thread laying head, said thread laying head fitted over and around said former and carrying a plurality of thread feeds, each thread feed allowing the drawing of a thread from a reserve, and

a rotator to rotate said axial thread laying head at substantially the same speed as the expected rotation speed of said tube.

2. Apparatus as claimed in claim 1 wherein, in said advance direction, said bead laying head precedes said thread laying head.

3. Apparatus as claimed in claim 1 wherein, in said advance direction, said bead laying head succeeds said thread laying head.

4. Apparatus as claimed in claim 3 including at least one, but less than the number of said bead laying heads, reinforcement laying head, between said thread laying head and said bead laying head in said advance direction, said reinforcement laying head depositing a mesh tape onto said former, the combined width of said mesh tapes deposited by said mesh laying heads being greater than said pitch.