EP3806942A1 - Tuyau tressé destiné à être utilisé dans des systèmes de traitement de l'apnée du sommeil qui découple des forces - Google Patents

Tuyau tressé destiné à être utilisé dans des systèmes de traitement de l'apnée du sommeil qui découple des forces

Info

Publication number
EP3806942A1
EP3806942A1 EP18923002.2A EP18923002A EP3806942A1 EP 3806942 A1 EP3806942 A1 EP 3806942A1 EP 18923002 A EP18923002 A EP 18923002A EP 3806942 A1 EP3806942 A1 EP 3806942A1
Authority
EP
European Patent Office
Prior art keywords
hose
matrix
braided
longitudinal axis
braid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18923002.2A
Other languages
German (de)
English (en)
Other versions
EP3806942A4 (fr
Inventor
Richard Ewers
Andrew Dominguez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fresca Medical Inc
Original Assignee
Fresca Medical Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fresca Medical Inc filed Critical Fresca Medical Inc
Publication of EP3806942A1 publication Critical patent/EP3806942A1/fr
Publication of EP3806942A4 publication Critical patent/EP3806942A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • F16L11/085—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0875—Connecting tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/08—Tubes; Storage means specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/0608—Making preforms having internal stresses, e.g. plastic memory characterised by the configuration or structure of the preforms
    • B29C61/0633—Preforms comprising reinforcing elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/08—Making preforms having internal stresses, e.g. plastic memory by stretching tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
    • D04C1/06—Braid or lace serving particular purposes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0238—General characteristics of the apparatus characterised by a particular materials the material being a coating or protective layer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2207/00—Methods of manufacture, assembly or production
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/04—Heat-responsive characteristics
    • D10B2401/041—Heat-responsive characteristics thermoplastic; thermosetting

Definitions

  • the polymer coating may be less than 0.03 in and may be made of a silicone dispersion.
  • FIG. 1 shows a schematic of a hose connected to a PAP machine (flow generator) and a sleep mask, as one possible application of the present invention.
  • FIG. 8A illustrates the braided hose and shows the corresponding braid angle in a rotationally relaxed state.
  • FIG. 10 illustrates the bend radius of the hose.
  • FIG. 11 presents the steps of relevance to manufacturing the braided hose of the present invention.
  • This perpendicular force can be a directly applied force, such as the by an appendage of the user, or indirectly by the longitudinal extension of the braided hose 10 in a coiled position.
  • the construction of the braided hose design interlaced with a polymer makes occlusion impossible from purely longitudinal forces. As the hose extends, the diameter will decrease as the braid angle becomes more longitudinal; and at a certain point the material of the monofilaments with the interstitial polymer would resist any further constriction of the braided hose 10.
  • the increase in elastic memory is caused by curing the polymer 60 to a specific orientation to which it will return when after it has been deformed.
  • the braid angle 40 should be stabilized in step 125, which may be achieved through heat setting the braid.
  • the braided matrix 20 elastically returns to the relaxed state with a maximum braid angle 40 after being deformed by elongation or torsion.
  • This stabilization step essentially flips the matrix’s relaxed and stressed states - prior to stabilization, the matrix’s relaxed state has a braid angle that is less than the stressed state, while after stabilization the converse is true.
  • the braided hose 10 is preferably heat set to a length at least as long as the length of the desired finished tube, e.g. preferably 6 ft (183 cm) to create a continuous length of braided hose 10.
  • Longer braided hoses may be heat set in increments of the preferred length of the braided hose 10.
  • the heat setting of the braid can be done at the time of braiding of the monofilaments 21 onto a mandrel, as an in-line process, or separately, when the braided matrix 20 is loaded onto a mandrel after braiding.
  • the FRESCA hose Provided below are the properties of a preferred embodiment of the braid matrix 20 and finished braided hose 10, hereinafter “the FRESCA hose”.
  • the superior performance of the FRESCA hose is its performance is due in part to the ratio of wall thickness to cross-sectional area. While the specifications of a hose are affected by material, design, size, and structure, the wall thickness to cross-sectional area is a good performance indicator of the hose. Having a lower wall thickness to cross-sectional area ratio allows for a more lightweight and flexible hose while maintaining a large cross-sectional area for high flow rates.
  • the FRESCA hose is able to achieve a low wall thickness to cross-sectional area ratio of only 0.26.
  • the braided matrix may also include shielded or insulated metal wires, open lumens, or heatable elements woven into the braided matrix. This is shown in FIG. 13, with shielded or insulated metal wires, open lumens, or heatable elements 230 being woven together with the monofilaments 21. These wires or lumens can be in addition to the monofilaments in the braid pattern, or in substitution for one or more of the monofilaments.
  • the utility of these wires or lumens is to connect an electrical or pneumatic sensor or other device located in the headgear, mask or on the hose, to the flow generator.
  • the heatable elements may be used to heat the length of the hose to prevent condensation, also known as rain out, from occurring within the hose or mask or as a comfort feature.
  • the FRESCA hose 10 has a low weight/length ratio, which is less cumbersome and more convenient for the user 16, due to the aforementioned properties (see Table 2).
  • the small bend radius 75 and high droop percentage indicate a high flexibility of the braided hose 10, which allows for an increased range of motion for the user 16.
  • the hose 10 has the ability to readily stretch with tensile loads. This is a useful feature for decoupling tensile loads due to force on the hose 10.
  • the pressure of air flow within the hose is unaffected even at +10% or +20% stretched lengths. Maintaining pressure while stretching the hose 10 means fewer impediments with PAP therapy in situations where the user 16 stretches the hose 10.
  • FIG. 1 Another example from the prior art is a high-pressure hose with an external braid cladding over an internal tube.
  • the sample used for comparison had an inner diameter of 0.20” and an outer diameter of 0.30”. Its wall thickness to cross sectional area ratio is 1.59— compared to the FRESCA hose’s ratio of 0.26, this is nearly a 6-fold difference.
  • Table 6 lists the performance characteristics of the externally braided hose. Again, the externally braided hose is relatively heavy, not particularly flexible, has poor stretch, and not intended to provide a supple feel. The poor characteristics of other types of braided hoses contrast sharply with the novel properties of the FRESCA hose.

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • Hematology (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Emergency Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Textile Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

L'invention concerne un tuyau qui comprend une matrice tressée avec une lumière intérieure. La matrice comprend également des filaments qui se croisent, créant une tresse, un axe longitudinal qui s'étend le long de la lumière et les filaments croisant l'axe longitudinal selon un angle de tressage. L'angle de tressage peut être modifié par compression ou expansion de la matrice le long de la direction de l'axe longitudinal. Un revêtement polymère est appliqué sur la matrice de telle sorte que la matrice est sensiblement imperméable à l'air. Le tuyau présente deux états : (1) un état relâché dans lequel le tuyau ne subit pas de force dans la direction de l'axe longitudinal ; et (2) un état contraint dans lequel le tuyau subit une force dans la direction de l'axe longitudinal. L'angle de tressage est plus grand dans l'état relâché par comparaison à l'état contraint. L'invention concerne également une méthode de fabrication du tuyau.
EP18923002.2A 2018-06-18 2018-09-17 Tuyau tressé destiné à être utilisé dans des systèmes de traitement de l'apnée du sommeil qui découple des forces Withdrawn EP3806942A4 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201862686442P 2018-06-18 2018-06-18
US201862694126P 2018-07-05 2018-07-05
US201862722580P 2018-08-24 2018-08-24
PCT/US2018/051399 WO2019245593A1 (fr) 2018-06-18 2018-09-17 Tuyau tressé destiné à être utilisé dans des systèmes de traitement de l'apnée du sommeil qui découple des forces

Publications (2)

Publication Number Publication Date
EP3806942A1 true EP3806942A1 (fr) 2021-04-21
EP3806942A4 EP3806942A4 (fr) 2022-07-06

Family

ID=68984207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18923002.2A Withdrawn EP3806942A4 (fr) 2018-06-18 2018-09-17 Tuyau tressé destiné à être utilisé dans des systèmes de traitement de l'apnée du sommeil qui découple des forces

Country Status (3)

Country Link
EP (1) EP3806942A4 (fr)
CN (1) CN112638459A (fr)
WO (1) WO2019245593A1 (fr)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3586058A (en) * 1968-09-25 1971-06-22 Mc Donnell Douglas Corp Hollow bodies and method of fabricating the same
US4332278A (en) * 1976-04-14 1982-06-01 Titeflex Corporation Braided-wire sheathing having bundled strands twisted to equalize tension
US4420018A (en) * 1982-04-28 1983-12-13 Brown Jr Thomas C Polyphase braid reinforced hose
US5383925A (en) * 1992-09-14 1995-01-24 Meadox Medicals, Inc. Three-dimensional braided soft tissue prosthesis
US9308698B2 (en) * 2009-01-15 2016-04-12 Schauenburg Hose Technology Gmbh Method of hose manufacture
DE102008033170A1 (de) * 2008-07-15 2010-01-21 Acandis Gmbh & Co. Kg Implantat mit einer geflochtenen Gitterstruktur und Verfahren zum Herstellen eines derartigen Implantats
US20160045304A1 (en) * 2011-04-18 2016-02-18 Eyal Orion External support for elongated bodily vessels
US8511214B2 (en) * 2011-04-21 2013-08-20 Aga Medical Corporation Tubular structure and method for making the same
US10307562B2 (en) * 2012-04-13 2019-06-04 Fresca Medical, Inc. Auto-feedback valve for a sleep apnea device
CN104245027B (zh) * 2012-04-17 2017-05-17 皇家飞利浦有限公司 用于呼吸治疗系统的气体输送导管
WO2014070034A1 (fr) * 2012-11-01 2014-05-08 Alyavdin Dmitry Vyaceslavovich Procédé de fabrication d'un manchon intelligent multicouche à dilatation thermique à partir de polymère thermoplastique
EP2994181B1 (fr) * 2013-05-07 2019-12-04 Fisher & Paykel Healthcare Limited Interface patient pour appareil respiratoire
AU2016210597B2 (en) * 2015-08-20 2021-07-29 Ragner Technology Corporation Annular-pleated circular braid
US10208410B2 (en) * 2015-11-13 2019-02-19 Federal-Mogul Powertrain Llc Braided textile sleeve with axially collapsible, anti-kinking feature and method of construction thereof
US10590575B2 (en) * 2016-02-09 2020-03-17 Federal-Mogul Powertrain Llc Braided textile sleeve with self-sustaining expanded and contracted states and enhanced “as supplied” bulk configuration and methods of construction and supplying bulk lengths thereof

Also Published As

Publication number Publication date
EP3806942A4 (fr) 2022-07-06
WO2019245593A1 (fr) 2019-12-26
CN112638459A (zh) 2021-04-09

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