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EP1684836A1 - Dispositif servant a conduire un gaz a respirer, et structure de guidage d'air placee dans ce dispositif - Google Patents

Dispositif servant a conduire un gaz a respirer, et structure de guidage d'air placee dans ce dispositif

Info

Publication number
EP1684836A1
EP1684836A1 EP04797670A EP04797670A EP1684836A1 EP 1684836 A1 EP1684836 A1 EP 1684836A1 EP 04797670 A EP04797670 A EP 04797670A EP 04797670 A EP04797670 A EP 04797670A EP 1684836 A1 EP1684836 A1 EP 1684836A1
Authority
EP
European Patent Office
Prior art keywords
molded
foam
section
cpap
foam body
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Withdrawn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
EP04797670A
Other languages
German (de)
English (en)
Inventor
Bernd Lang
Achim Biener
Wolfgang Mayer
Johann Burz
Martin Bechtel
Jörn LANGE
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.)
MAP Medizin Technologie GmbH
Original Assignee
MAP Medizin Technologie GmbH
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 MAP Medizin Technologie GmbH filed Critical MAP Medizin Technologie GmbH
Publication of EP1684836A1 publication Critical patent/EP1684836A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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. ventilators; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • 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. ventilators; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816—Joints or connectors
    • A61M16/0841—Joints or connectors for sampling
    • A61M16/0858—Pressure sampling ports
    • 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. ventilators; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0066—Blowers or centrifugal pumps
    • 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. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16—Devices to humidify the respiration air
    • 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
    • A61M2205/42—Reducing noise

Definitions

  • the invention relates to a device for supplying a breathing gas, in particular a CPAP device. Furthermore, the invention also relates to an air guidance structure provided in such a device as such.
  • the breathing gas supplied to a patient is usually conveyed to a pressure level above the ambient pressure by a delivery device.
  • This conveying device can be designed in particular as a blower device with a motor-driven impeller in the form of an axial, semi-axial or radial impeller.
  • the conveying device it is possible for the conveying device to be flowed through in phases in the opposite direction to the conveying direction if there is a corresponding back pressure.
  • the conveying device thus basically forms a pressure lock, by means of which the patient-side air duct system is at a higher pressure than the air duct system open to the environment.
  • the degree of air backflow during the expiration phase is essentially determined by the tidal volume and drainage effects.
  • the breathing gas can be supplied to a user via a breathing mask device which is connected to the CPAP device via a flexible hose line.
  • Labyrinth sections can be formed in the interior of the CPAP device to absorb any sound events that are coupled into the breathing gas by the conveying device. These labyrinth sections can be used with a Sound absorption material can be laminated to increase the sound absorption capacity of the labyrinth route.
  • the invention has for its object to provide a device of the type mentioned for supplying a breathing gas, which is characterized by a very quiet running and offers advantages in terms of assembly, as well as hygienic aspects compared to conventional devices of this type.
  • a breathing gas supply device in particular a CPAP device, in which an air duct structure is formed directly by a sound-absorbing, replaceable, or separately washable or washable foam element.
  • the foam molded part is preferably divided into a first molded part section and a second molded part section.
  • the two molded part sections are preferably designed in such a way that they can be assembled via complementary interfaces.
  • the two molded part sections can have intermeshing sections, which allow the sections to be positioned relative to one another, or can also define specific channel wall sections.
  • the two molded part sections can also be attached to a common intermediate structure.
  • the air duct structure is preferably designed such that it forms a sound absorption path.
  • the sound absorption path can interact with the first molded section with the second molded section be formed by alternately forming parts of the channel wall, or in addition by corresponding wall sections of the two molded part sections. It is also possible to design the air duct structure in such a way that a first section of the airway is formed by the first molded section and subsequently in sections by the second molded section.
  • Support structures are preferably provided to support the molded foam part. These support structures can penetrate into the foam molded part as plate-tube, pin or needle-like elements, or penetrate into the foam molded part provided for this purpose and fix and stiffen the foam molded part.
  • the molded foam part in such a way that it is firmly connected to those support structures, for example integrally formed with them, or molded onto them or glued to them.
  • the molded foam part provided with support structures in this way can also be designed as an interchangeable, in particular one-way, component.
  • the support structures can take on additional functions, for example fixing or cladding the foam molded part, or form part of the breathing gas conduction path or of connection structures.
  • the molded foam part is designed such that it defines a receiving section for the elastically flexible receiving of the conveyor.
  • the receiving section can be designed in such a way that the conveyor device is accommodated therein without play with a slight press fit. It is possible to elastically suspend, support or mount the conveying device over areas of a housing device forming part of the same, or also in cooperation with the motor thereof.
  • the contact surfaces of the molded foam part which come into contact with the conveying device can be adapted to the external geometry of the sections of the conveying device to be embedded therein. It is possible to accommodate the conveyor device over a large area.
  • a defined cooling air flow can be made possible via the gaps formed in this way.
  • the cooling air flowing through these areas can be branched off from an overpressure area of the breathing gas path.
  • the air routing of the cooling air is preferably carried out in such a way that the cooling air cannot be sucked back or returned, or air which otherwise comes into contact with electrical or electronic components, into the breathing gas path.
  • the conveying device can also be stored in the molded foam part using the support structures. These support structures can be embedded in the molded foam part.
  • the foam molded part in such a way that the first molded part section and the second molded part section have different material properties. This makes it possible to achieve particularly favorable sound absorption effects by coordinating the material properties. It is also possible to implement a moistening device via the foam molded part by forming at least one of the molded part sections from a material suitable as a moistening diaphragm. Furthermore, it is possible to implement a filter device in cooperation with the molded foam part by using at least one of the molded part sections to form a filter wall. It is also possible to attach a filter layer (eg fabric, filter paper, cellulose layer, etc.) or another foam body to the foam molding.
  • a filter layer eg fabric, filter paper, cellulose layer, etc.
  • the foam body forms a set-up section via which the CPAP device can be supported on a footprint in an advantageous manner with regard to minimized structure-borne sound transmission.
  • the erection section can be formed by foot zones that protrude slightly downward. The dimensions of the foot zones are preferably coordinated in such a way that a defined compression and thus pre-tensioning of the foam material results under the weight of the device. The degree of preload can be adjusted so that residual vibrations typical of the device are deleted or isolated with a high degree of probability or effectiveness.
  • the CPAP device comprises a housing device designed in the form of a receiving bell, which is fitted onto and surrounds the foam body.
  • the sound absorption path preferably has a multiple winding course. It is possible for the channel inner wall surrounding that sound absorption path to be formed by the foam body or a coating provided thereon
  • a CPAP device comprising a core module and one intended to accommodate the core module External module, wherein the core module has a foam body and an air conduction path is formed in this foam body, which is connected to a breathing gas delivery device.
  • the breathing gas delivery device is preferably embedded in the foam body.
  • the foam body is preferably formed in several parts. Functional components can advantageously be inserted into the foam body. In particular, it is possible to embed or use line structure components in the foam body. That line structure component can in particular be designed as a breathing tube connection structure component.
  • the other organs and functional components at least partially inserted into the foam molding can also be valve devices, switch devices and other sensor devices.
  • the air duct routes can be implemented on the basis of insert or shell concepts. Interfaces can be formed by the molded foam part or by structures used therein.
  • the foam molding can be made from a styrofoam-like foam material, from an elastomeric foam material, in particular LSR (Liquid Silicone Rubber) neoprene material, from foamed thermoplastics and foamed rubber or rubber, in particular silicone rubber materials.
  • LSR Liquid Silicone Rubber
  • the foam molding can be open or closed cell.
  • the pore size can be largely homogeneous - or inhomogeneous to achieve defined load-bearing properties.
  • the molded foam part can be formed locally - for example in the area of the breathing gas line sections - or all over the skin.
  • the skin can be applied by foil application, dipping, spraying or inmold coating.
  • the foam molded part can be designed as a largely rigid part or as a hard sponge-like soft part.
  • Micro-profiles, in particular microdolms, for sound absorption can be formed in the area of the respiratory gas passages.
  • Figure 1 is an exploded perspective view of a two-part molded foam part, and the functional components interacting with it in the form of a blower device, a connection structure component, an intake filter and retaining wall inserts;
  • FIG. 2a shows a perspective view of a first mold shell for producing a first molded part section of the molded foam part according to the invention
  • FIG. 2b shows a perspective view of the second mold shell for producing a second molded part section of the foam molded part
  • FIG. 3 shows an exploded perspective view of the components according to FIG. 1 in connection with an outer housing bell
  • FIG. 4 shows an illustration to explain a module concept that can be implemented in the manner according to the invention
  • Figure 5 is a perspective view of the device of Figure 4 from below, to explain the bottom part formed by the molded foam part
  • FIG. 6 shows a sketch to explain a connection structure component with pressure measurement port and breath flow sensor section that can be embedded in sections in the foam molding;
  • FIG. 7 shows a sketch for explaining a construction concept for providing the respiratory gas line sections through a multi-part molded foam part
  • Figure 8 is a sketch for explaining various channel cross sections formed by foam channel inlays.
  • FIG. 1 shows an exploded perspective view of a subdivided into a first molded section 1 and a second molded section 2
  • a blower device 4 is used, through which breathing gas is sucked in via an inlet line section 3a and conveyed to an outlet section 3b of the air duct at a predetermined overpressure level.
  • the inlet line section 3a and the outlet line section 3b have a multiple winding course, so that this results in a particularly high profile Sound absorption capacity results.
  • the two-part molded foam part can be coupled to a connection structure component 5, the connection structure component 5 being designed in such a way that it forms an interface device for connecting a breathing gas hose.
  • a support structure 6 can furthermore be inserted into the molded foam part, which stiffens the molded foam part on the one hand and on the other hand seals off certain zones of the molded foam part with increased tightness against one another.
  • a plug-in module 7 can also be inserted into the molded foam part, via which special additional functions such as monitoring, control or filter functions can be implemented.
  • the first molded part section 1 and the second molded part section 2 are designed in such a way that they can be assembled in a complementary manner while leaving the necessary functional spaces, in particular the breathing gas channels.
  • FIG. 2a shows a perspective view of a first mold shell 8 for producing a first molded part section of the molded foam part according to the invention.
  • FIG. 2b shows a perspective view of a second mold shell 9 for producing the second molded part section of the molded foam part.
  • Mold wall structures are formed in the two mold tool shells 8, 9, through which the recesses required for receiving the breathing gas delivery device and the recesses required for forming the breathing gas conduction paths are formed in the respective molded part section in the foam material to be molded.
  • the mold wall section 8a, 9a shown in FIGS. 2a, 2b serves to form the recess provided for receiving the blower device 4 (see FIG. 1).
  • the wall sections 8b, 8c and 9b, 9c are used to form recesses in the respective molded section for receiving coupling sleeves.
  • the wall sections 8d, 9d serve to form the outlet line sections of the air line channels running in the molded foam part.
  • the wall sections 8e, 9e serve to form the inlet line sections of the air line channels.
  • the air duct channels have a multiple winding path on both the suction and pressure side.
  • FIG. 3 shows, in the form of an exploded view, the components already described in connection with FIG. 1 and a housing bell 10 provided for receiving the same.
  • the housing bell 10 is dimensioned in such a way that it is pressed gently onto that formed from the first molded section 1 and the second molded section 2 Foam molding is attachable.
  • a further insert element 11 is provided in an intermediate space defined between the top of the bell housing 10 and the foam molding, which can be, for example, electrical components of the device, in particular a control board and a power supply arrangement. In particular when designing the further insert element as a control component, it is possible to equip it directly with sensor devices 11a for detecting control-relevant parameters.
  • a filter body 11b is also accommodated in the space mentioned.
  • FIG. 4 shows, in the form of a schematic representation, a CPAP device 12 which has a modular structure on the basis of the foam molding according to the invention.
  • This CPAP device t 12 comprises the assembly module A, referred to as the Erpass module, consisting essentially of the foam molding and the components accommodated therein, as well as the cover module here Designated assembly B, which includes that bell housing 10 ( Figure 3) and the electrical circuit devices included therein (not shown).
  • Modules A and B can be designed in such a way that an appropriately configured CPAP device is available by correspondingly placing the cover module on the air path module.
  • the molded foam part according to the invention can also be used to implement floor structures of the CPAP device, as is illustrated in FIG. 5.
  • the first molded part section 1 of the molded foam part makes it possible to implement a set-up structure 14 by means of which the CPAP device 12 can be set up elastically and flexibly on a set-up area.
  • the erection structure 14 is designed as an edge bead.
  • FIG. 6 shows a preferred embodiment of a connection structure component 5 which can be inserted into the molded foam part according to the invention and which has a breathing gas line section 5a and a pressure measurement hose connection section 5b.
  • the connection structure component 5 can be embedded in sections in the foam molding according to the invention.
  • a flow sensor device 15 is also provided on the connection structure component 5, by means of which pressure signals from the line section 5a can be tapped, on the basis of which the respiratory gas flow can be calculated.
  • FIG. 7 shows a schematic diagram for explaining further possibilities for forming the air conduit channels and the cavities to be formed in the foam molded part for accommodating functional components of the CPAP device.
  • a core body 16 formed from a foam material is inserted into a first molded part section 1 'and a second molded part section 2' with the air guide channels 3 left.
  • FIG. 8 shows a sketch of a molded foam part according to the invention with air duct 3 formed therein with different cross-sectional geometries.
  • the air duct channels 3 are provided with a sheathing 17, which is likewise made here from a foam material and is inserted into the first and the second molded part sections V, 2 '.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pulmonology (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Emergency Medicine (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Exhaust Silencers (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

L'invention concerne un dispositif servant à amener un gaz à respirer, en particulier un dispositif du type CPAP (à ventilation spontanée en pression positive continue). L'invention concerne en outre une structure de guidage d'air placée dans un tel dispositif. L'objectif de l'invention est de créer un tel dispositif d'amenée d'un gaz à respirer qui se caractérise par un fonctionnement très silencieux et présente, en ce qui concerne la technique de montage et du point de vue hygiénique, des avantages par rapport aux dispositifs classiques. Cet objectif est atteint, selon l'invention, avec un dispositif d'amenée de gaz à respirer comportant un dispositif de refoulement servant au refoulement du gaz à respirer à une pression supérieure à la pression atmosphérique, un logement destiné à recevoir le dispositif de refoulement, et une structure de guidage d'air servant à conduire le gaz à respirer du dispositif de refoulement à une zone de sortie, cette structure de guidage d'air étant constituée d'une pièce moulée en mousse dans laquelle sont formés des canaux à gaz à respirer. Il est ainsi possible, de façon avantageuse, de créer un dispositif d'amenée de gaz à respirer, en particulier un dispositif CPAP, dans lequel une structure de guidage d'air peut être formée directement par un élément en mousse absorbant les bruits, remplaçable ou bien lavable ou rinçable séparément.
EP04797670A 2003-11-05 2004-11-05 Dispositif servant a conduire un gaz a respirer, et structure de guidage d'air placee dans ce dispositif Withdrawn EP1684836A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10351503 2003-11-05
PCT/EP2004/012565 WO2005044356A1 (fr) 2003-11-05 2004-11-05 Dispositif servant a conduire un gaz a respirer, et structure de guidage d'air placee dans ce dispositif

Publications (1)

Publication Number Publication Date
EP1684836A1 true EP1684836A1 (fr) 2006-08-02

Family

ID=34559333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04797670A Withdrawn EP1684836A1 (fr) 2003-11-05 2004-11-05 Dispositif servant a conduire un gaz a respirer, et structure de guidage d'air placee dans ce dispositif

Country Status (6)

Country Link
US (1) US20070068526A1 (fr)
EP (1) EP1684836A1 (fr)
JP (1) JP2007510481A (fr)
CN (1) CN1901960A (fr)
DE (1) DE102004053588A1 (fr)
WO (1) WO2005044356A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP3173117B1 (fr) * 2003-07-09 2019-10-30 ResMed R&D Germany GmbH Système de masque respiratoire
US7607437B2 (en) * 2003-08-04 2009-10-27 Cardinal Health 203, Inc. Compressor control system and method for a portable ventilator
US8156937B2 (en) * 2003-08-04 2012-04-17 Carefusion 203, Inc. Portable ventilator system
US7527053B2 (en) * 2003-08-04 2009-05-05 Cardinal Health 203, Inc. Method and apparatus for attenuating compressor noise
US8118024B2 (en) 2003-08-04 2012-02-21 Carefusion 203, Inc. Mechanical ventilation system utilizing bias valve
BRPI0413275A (pt) 2003-08-04 2006-10-10 Pulmonetic Systems Inc ventilador portátil, e, sistema de ventilador portátil
US7997885B2 (en) * 2007-12-03 2011-08-16 Carefusion 303, Inc. Roots-type blower reduced acoustic signature method and apparatus
US8888711B2 (en) 2008-04-08 2014-11-18 Carefusion 203, Inc. Flow sensor
US8931481B2 (en) * 2009-06-04 2015-01-13 Redmed Limited Flow generator chassis assembly with suspension seal
US20150320954A1 (en) * 2012-12-17 2015-11-12 Nidec Copal Electronics Corporation Cpap device
EP4166177A1 (fr) * 2013-12-17 2023-04-19 ResMed Pty Ltd Appareil apte à être utilisé dans le traitement des maladies respiratoires
EP3095421B1 (fr) * 2014-12-05 2018-08-08 Somnics, Inc. Dispositif de génération de pression négative et son application
WO2024092264A1 (fr) * 2022-10-28 2024-05-02 Accufix Medical Llc. Appareil d'ancrage médical

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AUPP015097A0 (en) * 1997-11-03 1997-11-27 Resmed Limited A mounting body
AUPP240198A0 (en) * 1998-03-17 1998-04-09 Resmed Limited An apparatus for supplying breathable gas
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ATE342084T1 (de) * 1999-08-05 2006-11-15 Map Medizin Technologie Gmbh Vorrichtung zur zufuhr eines atemgases und befeuchtungsvorrichtung
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Also Published As

Publication number Publication date
US20070068526A1 (en) 2007-03-29
DE102004053588A1 (de) 2005-06-09
CN1901960A (zh) 2007-01-24
WO2005044356A1 (fr) 2005-05-19
JP2007510481A (ja) 2007-04-26

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