WO2020113349A1 - Dispositif de conditionnement de gaz respiratoires chez des patients avec trachéostomie - Google Patents

Dispositif de conditionnement de gaz respiratoires chez des patients avec trachéostomie Download PDF

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Publication number
WO2020113349A1
WO2020113349A1 PCT/CL2018/050121 CL2018050121W WO2020113349A1 WO 2020113349 A1 WO2020113349 A1 WO 2020113349A1 CL 2018050121 W CL2018050121 W CL 2018050121W WO 2020113349 A1 WO2020113349 A1 WO 2020113349A1
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WO
WIPO (PCT)
Prior art keywords
patient
cannula
casing
filter
chambers
Prior art date
Application number
PCT/CL2018/050121
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English (en)
Spanish (es)
Inventor
Ivan CARO PINTO
Macarena SÁNCHEZ RAMART
María Ignacia SÁEZ AGURTO
Original Assignee
Pontificia Universidad Católica De Chile
Hospital Dr. Exequiel González Cortés
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 Pontificia Universidad Católica De Chile, Hospital Dr. Exequiel González Cortés filed Critical Pontificia Universidad Católica De Chile
Priority to PCT/CL2018/050121 priority Critical patent/WO2020113349A1/fr
Publication of WO2020113349A1 publication Critical patent/WO2020113349A1/fr

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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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04—Tracheal 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
    • 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
    • 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
    • A61M16/10—Preparation of respiratory gases or vapours
    • 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
    • A61M16/10—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

Definitions

  • the invention that is the subject of the present invention patent application is applicable in the medical field, specifically refers to a device for conditioning respiratory gases in patients with tracheostomy that allows regulating the interior tidal volume.
  • inspired air conditioning occurs, which is the process by which a gas is heated and humidified as it passes through the airway to arrive in optimal alveolar conditions. Although the gas acquires temperature and humidity along the route by the airway, the main area where inspired air heating occurs is the nose.
  • the temperature of the nasal mucosa is around 32 ° C, and although the contact time between the inspired air and the nasal mucosa is short, it is sufficient to transfer heat to it.
  • the nose has great potential to regulate blood perfusion and thus counterbalance the loss of heat in inspiration.
  • the air circulates through a narrow duct generating turbulent flow that optimizes heating, humidification and filtering.
  • the humidity of the exhaled air is partially conserved by condensation on the mucosa due to the temperature difference. About 25% of the heat and humidity is recovered during exhalation.
  • the temperature of the inspired gas increases as it travels through the airway, at the alveolar-capillary interface it is at body temperature (37 ° C), with 100% relative humidity and 44mg / L absolute humidity.
  • Tracheostomy is a surgical procedure performed to create an opening inside the trachea, through an incision made in the neck, and the insertion of an endotracheal tube or tracheostomy tube to facilitate the passage of air to the lungs. . Its objective is to restore the airway, allowing adequate respiratory function.
  • a humidification system that can be active (mechanical respirator) or can be passive, normally called a heat and humidity exchanger filter (HME, for its Heat and Moisture Exchanger).
  • HME heat and humidity exchanger filter
  • Passive humidifiers are mandatory in patients with artificial airways, to avoid hypothermia, alteration of the epithelium of the airways, bronchospasm, atelectasis and airway obstruction.
  • hypothermia alteration of the epithelium of the airways
  • bronchospasm bronchospasm
  • atelectasis and airway obstruction.
  • the first are those active systems, which are used as part of a mechanical ventilation circuit, which is arranged between the patient's intubation route and a flexible duct attached to the mechanical fan; they are normally in the form of a disc or drum with in-line inlet and outlet in a single axis, as described, for example, in the US patent document US-8,176,916 (B2) of COVIDIEN AG, published the year
  • the device includes an upper cover suitable for connecting to ventilation means, a lower cover suitable for connecting to a tracheal tube or tracheostomy of a patient, a filter and / or HME element arranged between the upper cover and the lower casing and a condensation screen arranged in front of the filter.
  • the heat exchanger medium includes an elongated yarn-bonded olefin sheet.
  • the sheet can be covered with a hydrophilic coating and a desiccant.
  • the documents just mentioned refer to humidifying devices for application in ventilation circuits, which correspond to the first group of solutions on conditioning of breathing gas;
  • the other group of solutions corresponds to those devices that are used in patients who have a tracheal stomy, that have a stoma with an external connection cannula installed and that are for domestic use, not connected to a mechanical ventilator.
  • HME moisture heat exchangers
  • the dead space volume does not exceed one third of the expected tidal volume for the patient and, depending on the patient in which it is to be used, the dead space and tidal volume values change.
  • the following table shows the tidal volume used according to age, while the second table refers to the recommended respiratory rates for applying mechanical ventilation in children.
  • the present invention overcomes the problems not solved in the prior art, proposing a device that is a heat and humidity exchanger filter (HME) capable of providing a wide range of performance, so that it can be applied for any age just by making some adjustments, which also represents the advantage that at the industrial level a single device is manufactured that is suitable for all types of users.
  • HME heat and humidity exchanger filter
  • the device of the present invention also overcomes the problem of connection with the tracheostomy cannula, providing a secure connector, but at the same time easy to handle for its removal and replacement without risk of the cannula coming out or having They have to perform a strong traction maneuver to be able to detach it and thus pull the cannula inserted into the patient's neck, generating pain or injuries.
  • Still another problem that occurs is that sometimes the devices do not allow to easily visualize and verify the conditions during their use; it is not clearly known if the air is entering and conditioning with the necessary temperature and humidity to give an adequate benefit, this mainly because they are made of non-translucent or semi-translucent materials, without being able to observe the internal behavior of the air flow.
  • the main objective of the present invention is to provide an HME heat and humidity exchanger device for stomized tracheo patients, which allows its use in a wide range of ages, therefore, patient sizes, such as neonates, pediatrics and adults, providing means for adjusting the tidal volume inside the apparatus.
  • Another objective of the present invention is to provide an HME device that allows its connection with the patient's cannula in a way that facilitates its installation and uninstallation, being able to be operated by anyone without further training, facilitating daily replacement of the device, avoiding having to pull the cannula at the risk of it coming off or causing pain in the patient.
  • Still another objective of this invention is to provide an HME device that allows its operation to be clearly visualized, so that it does not require advanced knowledge to know that it is working correctly when conditioning the air.
  • Another object of the invention is to provide an HME device that favors the condensation of the water vapor coming from the patient's exhalation, increasing its residence in the device to be used as an inhaled air conditioner.
  • the present invention proposes a device comprising a housing with respiratory chambers with means for adjusting the internal tidal volume of the apparatus and means for connecting the device to the patient's cannula.
  • the respiratory chambers house a standard or conventional filter for this class of devices, such as filters of polymeric material, foam type, of pressed or rolled paper.
  • the casing is a hollow rigid body with opposite open ends, it can be of any geometric shape that favors a fluid passage of air and, at the same time, it facilitates its manufacture, but preferably the casing is of a cylindrical straight shape.
  • two lateral respiratory chambers and a central chamber are defined, all of them aligned on the longitudinal axis of the housing, so that the inspired air enters through each of the lateral chambers and mixes in the central chamber with the residual air. expiration that comes tempered and moistened from inside the patient.
  • the side chambers house the standard filters by means of a filter support piece that connects to each side chamber, which will be explained later; while the central chamber of the housing corresponds to the space provided between the lateral chambers inside the housing; On each of its sides, where the lateral chambers begin, there is a diagonal transverse partition, which serves both to retain the filter, preventing it from migrating into the airway, and to increase the condensation surface of the gases and improve air humidity conditioning.
  • the casing further comprises a smaller frontal portion, arranged perpendicular to the longitudinal axis, which can take any suitable form to direct the air, however, in a preferred embodiment, this smaller frontal portion is also cylindrical, presenting a frontal opening with a circular channel interior holding a safety valve.
  • This safety valve is formed by an elastomeric disc, of the diaphragm type, which has diagonal cuts that define fins that are flexed with air pressure and facilitate their expulsion in the event of internal overpressure, as happens with coughing episodes.
  • This valve also allows the insertion of some accessory, such as a catheter to access the patient's airway, without the need to disassemble the entire device.
  • the casing further comprises a smaller rear portion, opposite the front, which is also oriented perpendicular to the longitudinal axis of the casing; This posterior portion has an opening on its posterior face to connect with the connection means to the cannula that will be described later.
  • Said smaller posterior portion allows a lateral connection with an accessory oxygen pathway, so that it has a small tube-shaped extension where the oxygen supply can be mounted just before passing to the patient's cannula.
  • the means for regulating the internal tidal volume of the device allow an axial enlargement or reduction of the lateral respiratory chambers, where this change in the internal volume is carried out because a set of displacement guides are arranged inside each lateral chamber. the axial movement of a filter holder, which counts with complementary means of axial displacement with respect to the lateral chambers of the housing.
  • the set of displacement guides are strategically placed to allow the filter support to advance axially in or out of the lateral chamber and to be fixed in certain positions, defining, in this set of displacement guides, sections of axial advance -which are the longitudinal sections- and circumferential displacement sections as a turn -which are the perpendicular sections- where their position is also fixed.
  • the displacement guides are formed by a plurality of grooves or grooves distributed sequentially, interspersed with each other with a longitudinal section and a perpendicular section, where a first longitudinal section originates from each open end of the lateral chambers, where the support is introduced filter.
  • the filter supports comprise a body that is complementary to the shape of the lateral chambers of the housing, but is preferably cylindrical; They comprise an interior cavity where the filter is housed, with a distal face, which is on the outside, and is crosslinked with perforations or cuts to let the air pass, but at the same time, retain the filter housed inside. Opposite to this distal face, it presents an open proximal face, through which the filter is inserted.
  • Said complementary axial displacement means that are present in the filter supports comprise at least two radial projections whose shape and dimensions fit the width of the set of camera displacement guides and with this, allow the Filter supports move in a guided way in or out of the lateral chambers, increasing or reducing the volume of the device.
  • Said radial projections can be arranged on the inner edge of the open proximal face of the filter support, while the set of displacement guides can be arranged on the outer surface of the lateral chambers; however, in a preferred embodiment of the invention, said radial projections are arranged on the outer edge of the open proximal face of the filter holder, while the set of displacement guides are arranged on the inner surface of the lateral chambers.
  • the set of displacement guides that wind the axial movement of the filter support comprise a thread arranged on the inner surface of the lateral chambers of the housing; while the complementary means in the filter supports also comprise a thread that is arranged on its outer surface; so that in operation, the filter supports move axially within the chambers exerting a twisting motion.
  • the device has connecting means to the patient's cannula, this fixation being a temporary state, since the device must be completely replaced on a daily basis and sometimes, more than once a day, as in the cases of patients affected by problems that cause them to generate many secretions.
  • These connecting means operate through a radial compression fixation around the patient's cannula, in the manner of a compressible jaw.
  • These means comprise a rigid connector and an elastomeric adapter that is arranged inside the rigid connector and at the same time, outside the patient's cannula.
  • the rigid connector is cylindrical in shape with a proximal end through which it joins the posterior opening of the posterior minor portion of the housing and comprises an open distal end on whose inner surface it has a single thread, only half a turn.
  • the size of this connector is in relation to the standard size of the cannulas - normally
  • the device is configured as a low-profile device that does not protrude too far from the patient's throat, at least not beyond what is necessary, making it a more comfortable device.
  • the elastomeric adapter of the connecting means has a flat ring shape whose inner diameter is slightly larger than the outer diameter of the standard cannula mantle.
  • Said outer mantle of the ring comprises single thread of only half a turn, has a distal end and a proximal end, where this adapter comprises a plurality of longitudinal notches that start from the distal end and extend close to the proximal end, forming sections of flexible wall, due to the elastomer material.
  • the interior surface of these wall sections of the adapter has radial projections that remain in contact with the exterior surface of the patient's cannula and allow the adapter to be fixed in a non-slip manner, acting as embedded teeth.
  • the thread inside the rigid connector matches the thread in the mantle of the elastomeric adapter, so that when that rigid connector rotates and advances outside the adapter, makes the flexible wall sections flex radially, reducing the internal diameter of the adapter until it conforms to the cannula and since the material is elastomer, it allows a compression to be generated that makes the fixation like a seal; thus, the device cannot be easily loosened and pulled out, but rather requires a half reverse rotation of the device around the cannula to be released from the elastomer adapter and, in turn, this adapter when released from compression by the rigid connector, It opens its fringed walls and is easily movable to remove it from around the cannula.
  • the parts that make up the device are made of polymeric material, preferably of high translucency and colorless, allowing to clearly see if the device is working, which is verified if water vapor accumulates on the inner surface of the housing from the exhaled air that It comes with higher temperature and higher degree of humidity.
  • each patient has different tidal volume requirements according to their respiratory capacity and the size of their organs, which are divided in a standardized way between neonatal, pediatric and adult patients.
  • the device that is the reason for This invention can gradually modify the internal cavity, increasing or decreasing the tidal volume, which due to its adjustment means formed by the set of axial displacement guides and the projections of the filter support allows different relative positions to be configured between them.
  • the device can be configured according to a different tidal volume, where in order to obtain the smallest possible size, the filter supports must be at their internal displacement stop touching the transverse partition of the central chamber. Meanwhile, in order to achieve the greatest possible internal volume, the filter supports must be displaced axially outwards from the lateral chambers in their external stop configured by the outermost perpendicular section of the set of displacement guides.
  • the filter supports can be moved interchangeably between one side chamber and another, that is, it is not necessary that the displacement be symmetrical for both side chambers, so that the range of intermediate positions increases even more.
  • the set of displacement guides that are present in the device can have a plurality of sections on each side, but it must at least offer two axial positions on each side, such that the filter support can be displaced at least between a stop position Inner for minimum tidal volume and an outer stop position for maximum tidal volume.
  • three different settings can be achieved that give effect to three different tidal volumes from a single device that can be applied to three different age groups, such as neonates, pediatrics and adults.
  • a first tidal volume which would be the minimum size, would be achieved if both filter supports are completely inserted up to the internal stop given by the transverse partitions of the central chamber.
  • an intermediate tidal volume would be achieved if only one of the filter holders were moved axially to its outermost position and finally, the third tidal volume, which would be the largest, would be achieved if both filter supports are moved outwards and fixed in their outermost position.
  • the guide assembly can offer three axial positions on each side, so that the different combinations generate five different tidal volumes from a single device, combining the position of the filter holder in each of the three positions in each side camera of the device.
  • the guide assembly could be used by five different age groups, such as neonates (from 0 to 28 days), minor pediatric (from 29 days to 24 months), older pediatric (2 years to 5 years), school-adolescent (from 6 years to 18 years) and adults (from 18 years).
  • the device could have two versions available, one with the aforementioned capacities, and a second with capacities from 10ml to 15ml.
  • the former could be used by younger age groups, such as neonates (from 0 to 28 days), minor pediatric (from 29 days to 24 months), older pediatric (2 years to 5 years) and The second could be used by the older age groups, school-adolescent (from 6 years to 18 years) and adults (from 18 years).
  • the classification just exposed is only by way of example, it is not rigid, since more than the age of the patient, what matters is its size and respiratory capacity.
  • inventions may include more than three axial positions per side, increasing the diversity of tidal volume sizes and hence, increasing the possibility of application in patients with different requirements.
  • the different axial positions that the filter support can adopt with respect to the lateral chamber where it is attached will depend on the set of displacement guides, where the longitudinal sections will allow axial displacement along the camera, while the perpendicular sections will generate the stopping points of the advance and fixation of the filter support.
  • Each of the pieces of the device although preferably the housing, the rear connector and the filter supports must be made of a high translucency and colorless material, such as a polycarbonate or medical grade silicone, since it is this characteristic that would allow that the user can verify the operation, since a correct operation of the device causes the interior walls of the device to fog due to the condensation of the water vapor contained in the tempered respiratory flow that comes from the patient's route; therefore, a dry surface appearance is an indicator that it is not working properly, either because there is significant leakage in some area or because the tidal volume is not adequate for the patient.
  • a high translucency and colorless material such as a polycarbonate or medical grade silicone
  • Figure 1 shows a front isometric view of the device.
  • Figure 2 shows a front isometric view of the device casing.
  • Figure 3 shows a partial section iso metric view of the device casing.
  • Figure 4 shows an enlarged isometric view in detail of the front area of the device.
  • Figure 5 shows an exploded isometric view of the device, where the component parts can be seen separately.
  • Figure 6 shows a partial sectional front isometric view of the device casing.
  • Figure 7 shows a partial sectional rear isometric view of the device casing.
  • Figure 8 shows an exterior isometric view of a filter holder and filter.
  • Figure 9 shows an interior isometric view of a filter holder
  • Figure 10 shows a partial sectional rear isometric view of the housing and of a filter holder of the device.
  • Figure 11 shows a bottom plan view of the device.
  • Figure 12 shows a rear isometric view of the device with the rear connector and elastomer adapter.
  • Figure 13 shows a rear isometric view of the device with the rear rigid connector without the elastomer adapter.
  • Figure 14 shows a rear isometric view of the elastomeric adapter.
  • Figure 15 shows a side elevation view of the elastomer adapter.
  • Figure 16 shows a front elevation view of the elastomer adapter.
  • Figure 17 shows a posterior isometric view of the device with a partial section of the posterior rigid connector.
  • Figure 18 shows a top plan view of the device with the elastomer adapter offset outward.
  • Figure 19 shows a front view of the device in a first operating position with the minimum capacity of internal tidal volume.
  • Figure 20 shows a front view of the device in a first operating position with the maximum volume capacity of the current interior.
  • Figure 21 shows a front isometric view of the device with a partial section of the cameras and front area of the housing according to an alternative embodiment.
  • Figure 22 shows a front isometric view of the device with a partial section of the cameras and front area of the housing, showing the filter holder according to an alternative embodiment.
  • the present invention relates to a respiratory gas conditioning device in patients with tracheostomy that allows adjusting the internal tidal volume, is securely attached to the patient's cannula, and houses a pair of HME filters (A)
  • the device (1) comprises a casing (10); regulating means (20,30) of the internal tidal volume and connecting means (40, 50) for fixing by radial compression of the device (1) to the patient's cannula (not illustrated).
  • the casing (10) comprises a hollow rigid body (101) with open ends (102, 102 ') opposite each other, inside which two chambers are defined respiratory laterals (12, 12 ') having an inner surface (121) and an outer surface
  • the casing further comprises a central respiratory chamber (13), all the chambers (12, 12 'and 13) being aligned on the longitudinal axis of the casing (10).
  • Said lateral chambers (12, 12 ’) form part of the means for regulating the interior tidal volume of device (1), which is produced by axial expansion of said chambers.
  • the central chamber (13) corresponds to the space provided between the lateral chambers (12, 12 ’), and a transverse partition is provided on each of its sides
  • the casing (10) also includes a smaller frontal portion (14) with a frontal opening (141) where a safety valve (142) is provided, formed by a diaphragm-type elastomeric disk that it has diagonal cuts (143) that define fins (144) that are flexed in or out.
  • the aforementioned means of regulating the internal tidal volume of the device are formed by a set of axial displacement guides (20) arranged in said lateral chambers (12,12 ') of the housing and by a pair of supports
  • the set of axial displacement guides (20) are arranged in each lateral chamber (12, 12 ') in number of two longitudinal sections (201) interspersed with two perpendicular sections (202).
  • the filter supports (30) comprise a rigid body (300) complementary to the shape of the lateral chambers of the housing, with an external surface (301), a cavity interior (302) where the filter (A) is housed; it also has a distal face (303) crosslinked to let the air pass and retain the filter (A) inside it and an open proximal face (304) to introduce said filter;
  • the complementary means for axial displacement of the supports (30) comprise radial projections (305).
  • these radial ribs (305) fit into the set of travel guides and allow the filter holders (30) to move axially in or out of the side chambers (12, 12 ') when moving through the longitudinal sections (201) and fixing its axial advance by fitting into the perpendicular sections (202).
  • the radial projections (305) of the supports (30) are arranged on the outer edge of the proximal face (304), while the set of displacement guides
  • the casing (10) also comprises a smaller rear portion (15) with a rear opening (151) and to that smaller rear portion (15) an accessory duct (60) is attached to introduce gases into the device.
  • the connecting means for fixing by radial compression to the patient's cannula comprise a rigid connector (40) and an elastomer adapter (50) that is arranged inside the rigid connector and to its time, outside the patient's cannula (not shown).
  • this rigid connector (40) is a cylindrical body
  • the elastomer adapter (50) is a flat ring-shaped body (500) with an inner surface (501), an outer mantle (502) with a thread. (503), a distal end (504) and a proximal end (505), where this body has a conical trunk shape with a larger diameter (508) at the distal end (504) and a smaller diameter at the proximal end (505), best illustrated in FIG. 15.
  • This adapter (50) comprises a plurality of longitudinal notches (506) that start from the distal end (504) and extend close to the proximal end (505).
  • sections of flexible wall (507) are formed that flex radially with respect to the outer mantle of the patient's cannula, shrinking the larger diameter (508) of the adapter (50) until it conforms to said outer surface of the cannula.
  • the inner surface (501) of the adapter (50), in the wall sections (507) has radial projections (509) that remain in contact with the outer surface of the cannula.
  • the thread (503) of the elastomer adapter (50) is complementary to the thread (404) of the rigid connector (40) and they are half a turn.
  • the rigid connector (40) is attached to the casing (10) by its proximal end (401) that splices with the posterior opening (151) of the posterior minor portion (15) of the casing.
  • the parts that make up the housing (10), the filter supports (30), the rigid rear connector (40) and the elastomer adapter (50) of the device are made of high translucency material.
  • the device can be configured according to a different interior tidal volume, where to obtain the minimum possible size the filter supports (30) must be on an internal stop inside the lateral chambers (12,12 ') touching the transverse partitions (131,131 '), as seen in FIG. 19 to achieve the greatest possible internal volume, the filter supports (30) must be axially displaced out of the lateral chambers (12,12'), as well as seen in FIG. 20.
  • the set of displacement guides that wind the axial movement of the filter support (30), comprise a thread threaded (70) disposed on the inner surface (121,121 ') of the side chambers (12,12') of the casing (10); while the complementary means in the filter supports (30) also comprise a thread (80) that is arranged on its outer surface (301); so that in operation, the filter supports (30) move axially within the lateral chambers (12,12 ’) exerting a forward or backward turning movement.

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

L'invention concerne un dispositif (1) de conditionnement de gaz respiratoires chez des patients avec trachéostomie, qui permet de régler le volume courant intérieur, se couple de manière sécurisée à la canule du patient et loge une paire de filtres HME (échangeurs de chaleur et d'humidité); le dispositif comprenant des moyens de régulations du volume courant intérieur formé par un boîtier (10) avec une chambre centrale (13) et deux chambres respiratoires latérales (12, 12') qui possèdent des guides de déplacement (20) par lesquels se déplace axialement un support de filtre (30) qui augmente ou diminue le volume interne du dispositif; et qui comprend également des moyens de connexion du dispositif à la canule du patient par compression radiale d'un connecteur élastomère (50) rainuré qui s'adapte à la surface extérieure de la canule et est comprimé par un connecteur rigide (40) extérieur connecté au boîtier du dispositif au moyen d'un filetage.
PCT/CL2018/050121 2018-12-05 2018-12-05 Dispositif de conditionnement de gaz respiratoires chez des patients avec trachéostomie WO2020113349A1 (fr)

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PCT/CL2018/050121 WO2020113349A1 (fr) 2018-12-05 2018-12-05 Dispositif de conditionnement de gaz respiratoires chez des patients avec trachéostomie

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PCT/CL2018/050121 WO2020113349A1 (fr) 2018-12-05 2018-12-05 Dispositif de conditionnement de gaz respiratoires chez des patients avec trachéostomie

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210338964A1 (en) * 2020-05-04 2021-11-04 Aeon Research And Technology, Inc. Modular pulmonary treatment system
WO2023009365A1 (fr) * 2021-07-28 2023-02-02 The Regents Of The University Of California Dispositifs et procédés de surveillance de la respiration d'un patient sous trachéostomie

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GB2391816A (en) * 2002-08-15 2004-02-18 Intersurgical Ltd Heat and moisture exchange device with movable element
DE202005013988U1 (de) * 2005-09-06 2005-11-24 Neubauer, Norbert Feucht-Wärme-Austauschvorrichtung für die Atemluft
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DE202012001825U1 (de) * 2012-02-22 2012-04-03 Norbert Neubauer Feucht-Wärme-Austauschvorrichtung für die Atemluft
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CN203107940U (zh) * 2013-01-22 2013-08-07 江苏苏云医疗器材有限公司 一种一次性使用热湿交换器
JP2016022203A (ja) * 2014-07-22 2016-02-08 泉工医科工業株式会社 呼吸用温湿度交換器

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WO2023009365A1 (fr) * 2021-07-28 2023-02-02 The Regents Of The University Of California Dispositifs et procédés de surveillance de la respiration d'un patient sous trachéostomie

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