• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Intubation device for patients by airway. The invention relates to a medical device for the intubation of patients by air, configured to be introduced through the larynx and glottis of a patient, comprising: a tube (2), a bell (3) of elastic biomaterial attached to the end distal tube, at least two inflatable and annular air chambers (4a, 4b) incorporated in the wall of the hood (3) to produce the unfolding thereof when inflated with air, and the folding of the hood when it is removed air from the chambers (4a, 4b). In the deployed position of the bell (3), the diameter of the most distal chamber (4b) is greater than the diameter of the proximal chamber (4a), and an air duct (5) that passes through the tube (2) and is connected to the annular chambers (4a, 4b) to inject and extract air from said chambers (4a, 4b). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2753928A1
    申请号:ES201930144
    申请日:2019-02-20
    公开日:2020-04-14
    发明作者:Vazquez Rita Galeiras；Moar David Freire
    申请人:Servicio Gallego De Salud Sergas；
    IPC主号:
    专利说明:

    [0001]
    [0002]
    [0003] Object of the invention
    [0004]
    [0005] The present invention relates to a medical device for intubation of patients by airway.
    [0006]
    [0007] An object of the invention is to provide a simple intubation device that allows endotracheal intubation in most patients, efficiently securing the airway through the oral cavity, and being able to contain oropharyngeal secretions, prevent aspiration and intubation-related pneumonia.
    [0008]
    [0009] Background of the Invention
    [0010]
    [0011] Intubation involves inserting a tube into an external or internal hole in the body, although it is commonly used with reference to tracheal intubation.
    [0012]
    [0013] Endotracheal intubation is the most reliable way to ensure airway patency, with the aim of providing adequate oxygenation and ventilation for the patient, while avoiding bronchoaspiration.
    [0014]
    [0015] Currently known intubation devices suffer from the following problems:
    [0016]
    [0017] 1.- In the last 50 years, the way used to stably secure the airway through the oral cavity has been the use of an orotracheal tube anchored to the trachea by means of a pneumo-tamponade balloon. However, this tube has the following limitations:
    [0018]
    [0019] a) Its caliber does not allow intubation in many cases where the airway is visualized.
    [0020] b) The pneumo-tamponade balloon is the only barrier available to contain oropharyngeal secretions and avoid the phenomenon of bronchoaspiration and intubation-related pneumonia.
    [0021]
    [0022] c) Its length, beyond the dental arch, and current fixation systems make it easier for the patient to bite down on the tube, compromising the passage of air during agitated states, and the risk of self-extubation in extreme cases.
    [0023]
    [0024] 2.- On the other hand, current devices that help introduce the orotracheal tube in cases of difficult airways, present the following problems:
    [0025]
    [0026] a) They have a volume that makes it difficult to handle in the patient's oral cavity.
    [0027]
    [0028] b) They facilitate the vision of the glottis, but they do not guarantee intubation in all cases of difficult airways and some patients are not intubable.
    [0029]
    [0030] Therefore, in this sector of the art, there is a need for an endotracheal intubation device that solves or at least greatly alleviates the problems outlined above in relation to known intubation devices.
    [0031]
    [0032] Description of the Invention
    [0033]
    [0034] The invention relates to a device for intubation of patients by airway, with a size and shape suitable to be able to enter the larynx through the glottis of a patient (to the subglottic-tracheal space).
    [0035]
    [0036] The device comprises a tube of semi-rigid material, that is, it has a certain flexibility and is preferably made of a transparent, biocompatible plastic material.
    [0037]
    [0038] The device also has a folding and unfolding body, which takes the form of a bell in the unfolded position, and which is made of a biomaterial elastic, such as silicone. This bell-shaped body is connected at one end to the distal end of the tube.
    [0039]
    [0040] The wall of the hood incorporates at least two ring-shaped air chambers and arranged generally concentric with respect to the longitudinal axis of the tube. These chambers are inflatable to produce the unfolding of the hood when the chambers are filled with air, and the folding of the hood when air is drawn from the chambers.
    [0041]
    [0042] The device has an air duct that passes through the tube, either inside the tube or through the tube wall itself, and that is connected to the annular chambers to inject and extract air from said chambers. This tube extends towards the proximal end of the tube, to be accessible from the outside of the device and to be able to be connected to an air pump, which may consist, for example, of a syringe.
    [0043]
    [0044] The bell can be supplied from the factory with the vacuum made in the chambers, so the bell is retracted adopting a smaller perimeter dimension than the semi-rigid tube, which greatly facilitates the process of introducing the intubation device through the glottis of a patient.
    [0045]
    [0046] When the annular air chambers are inflated and the hood is deployed in the subglottic space of a patient, the chambers form two annular pressure zones that guarantee the stability of intubation taking into account the anatomy of that space, and adheres perfectly to the anatomical walls of that cavity, and the sealing of the subglottic-tracheal cavity to block oropharyngeal secretions.
    [0047]
    [0048] The device also has a rigid material mouthpiece attached to the proximal end of the tube, which is suitable for connection to a respirator.
    [0049]
    [0050] The device also has a flexible and reusable fibroscope, which can be inserted through the semi-rigid tube, reaching the distal end of the bell
    [0051] Some of the advantages of the intubation device of the invention are the following:
    [0052]
    [0053] - Provides visibility and simplicity in the approach through the glottis when used with a fibroscope.
    [0054]
    [0055] - It saves the difficulties of passing through the vocal cords by means of a smaller gauge end, which is inserted folded through the vocal cords (glottis).
    [0056]
    [0057] - The folded end expands in the subglottic space establishing a flared or conical contact surface. This adhered surface together with two air rings for its expansion is more effective in preventing bronchoaspiration of oropharyngeal secretions, than the traditional perimeter of a pneumo-tamponade balloon.
    [0058]
    [0059] - The presence of a mouthpiece at the level of the dental arch makes it possible to provide a rigid element of interposition between it and the tube, preventing its collapse in states of agitation; and reduce external exposure of the device to the patient, making self-extubation difficult (accidental removal of the device by the patient).
    [0060]
    [0061] Brief description of the figures
    [0062]
    [0063] A preferred embodiment of the invention is described below in relation to the following figures:
    [0064]
    [0065] Figure 1 shows a perspective representation of a preferred embodiment of the device object of the invention, which is shown with its distal part in the unfolded position in figure (A), and in the rest position in figure (B) . Figure 1A includes a cross-sectional cut as indicated by the cut arrows, showing the duct (5) immersed in the wall (2).
    [0066]
    [0067] Figure 2.- shows a side elevation representation of the intubation device, which is shown with its distal part in the resting position in figure (A) and in the folded position in figure (B).
    [0068] Figure 3.- Shows in several schematic views in lateral elevation the intubation process, where in Figure (A) the device is close to the sub-glottic space and in a folded position, in Figure (B) it is entering the sub-glottic space still in the folded position, and in figure (C) the device is already deployed and coupled in the sub-glottic space, that is, in the final intubation position.
    [0069]
    [0070] PREFERRED EMBODIMENT OF THE INVENTION
    [0071]
    [0072] In view of the figures, it can be seen that in this preferred embodiment of the invention, the intubation device (1) comprises a semi-rigid biomaterial tube (2) preferably made of transparent plastic, which has at its distal end, a bell (3) made of elastic biomaterial, for example silicone, attached to the tube (2), so that air can be supplied to a patient through the tube (2) and the bell (3).
    [0073]
    [0074] The wall of the hood (3) incorporates two annular low pressure air chambers (4a, 4b) (<20mmHg), which when filled with air with the appropriate pressure, produce the unfolding of the hood (3) as shown in Figure 1 (A).
    [0075]
    [0076] The bell (3) is configured such that when expanded, the diameter of the most distal chamber (4b) is greater than the diameter of the proximal chamber (4 a). This configuration can be obtained in the manufacturing process by molding the bell, making a part of it have more elasticity than another, as is usual in the manufacture of this type of elastic parts.
    [0077]
    [0078] For inflation of the chambers, there is an air duct (5) that is immersed in the tube wall itself (2) and that is communicated to both chambers (4a, 4b). Alternatively, the tube (2) can be adhered to the inner surface of the tube (2).
    [0079]
    [0080] A part of the duct (5) comes out of the tube (2) and extends to be accessible from the outside of the device (1) when intubated in a patient, to be able to be connected to a source of air and vacuum, such as a syringe (9), through a connection mouth (6), as shown in figure 3.
    [0081] At its proximal end, tube (2) has a connection nozzle (7) attached to a respirator (not shown) at the level of the dental arch. The mouthpiece (7) is made of rigid material and has two lateral fins (8,8 ') of adequate size to prevent the mouthpiece (7) from entering the oral cavity, and to allow the mouthpiece (7) to be held. to the patient's head with bandages or adhesive bands.
    [0082]
    [0083] Figure 3 shows sequentially the process of intubation of the device (1) in a patient.
    [0084]
    [0085] Initially, in the chambers (8a, 8b) the vacuum is made, so that the bell (3) is in the retracted position shown in figure 2B. To do this, it incorporates a one-way valve installed in the air duct (5) to maintain the vacuum in the chambers.
    [0086]
    [0087] In this folded position, the device (1) is easily inserted into the larynx (10) passing through the vocal cords (11) (Figures 3 A and 3B).
    [0088]
    [0089] To direct the device through the vocal cords to the subglottic-tracheal space, the device (1) incorporates a reusable flexible fibroscope (13), which passes through the interior of the semi-rigid tube (2), and extends to the most extreme distal to the bell (3).
    [0090]
    [0091] When the device reaches the subglottic space (12) of a patient, air is injected into the chambers (4a, 4b) through the syringe (9), and the bell (3) expands, leaving the device anchored in the subglottic space (12), and so that the bell (3) presses and seals through the chambers (4 a, 4b) the anatomical walls of this space to block the passage of oropharyngeal secretions.
    [0092]
    [0093] To remove the device, it is enough to lightly suck part of the air from the chambers (4 a, 4b) with the syringe (9), to retract the bell (3) until it reaches the rest position of figures 1B, 2A and extract the device of the patient's larynx.
    [0094] As can be seen in the figures, in the folded position, the perimeter dimension of the hood is equal to or less than the semi-rigid tube, which greatly facilitates its introduction.
    权利要求:
    Claims (9)
    [1]
    1.- Device (1) for intubation of patients by air, configured to be introduced through the larynx and glottis of a patient, characterized in that it comprises:
    a tube (2) of semi-rigid biomaterial,
    an elastic biomaterial bell (3) attached to the distal end of the tube,
    at least two annular and inflatable air chambers (4 a, 4b), incorporated in the wall of the hood (3) to produce its unfolding when air is inflated, and the folding of the hood when air is removed from the cameras (4 a, 4b),
    where the bell (3) is configured such that in its deployed position, the diameter of the most distal chamber (4b) is greater than the diameter of the proximal chamber (4 a),
    an air duct (5) that passes through the tube (2) and that is communicated with the annular chambers (4 a, 4b) to inject and extract air from said chambers (4 a, 4b).
    [2]
    two.
    [3]
    3.
    [4]
    Four.
    [5]
    5.
    [6]
    6.
    [7]
    7.
    [8]
    8.
    [9]
    9. Device for intubation of patients by air, according to any of the preceding claims, characterized in that a vacuum is made in the air chambers (4a, 4b).
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4662871A|1984-09-18|1987-05-05|Stephen Rafelson|Disposable suction catheter and system for providing multiple suctioning capabilities during medical procedures or the like|
    US4637389A|1985-04-08|1987-01-20|Heyden Eugene L|Tubular device for intubation|
    US5058577A|1989-05-09|1991-10-22|Gary Six|Flexible tip stylet for use with an endotracheal intubation device|
    ES2214878T3|1998-08-13|2004-09-16|Archibald Ian Jeremy Brain|AN AIR DEVICE WITH LARINGEA MASK.|
    US20050235995A1|2004-04-21|2005-10-27|Tresnak Rick J|Endotracheal tube system and method of use|
    ES2668026T3|2013-03-06|2018-05-16|Medcom Flow, S.A.|Laryngeal video strip with rigid retractable tongue and with means for ventilation and intubation|
    US3616799A|1969-10-08|1971-11-02|Charles H Sparks|Tubes with sail cuffs for tracheal intubation|
    US4850348A|1985-01-23|1989-07-25|Pell Donald M|Endotracheal tube apparatus and method|
    GB9504657D0|1995-03-08|1995-04-26|Neil Michael J O|An improved artificial airway device|
    GB0719054D0|2007-09-29|2007-11-07|Nasir Muhammed A|Airway device|
    WO2015147769A1|2014-03-25|2015-10-01|Demi̇rci̇ Mehmet Fatih|Baloonless endotracheal tube|
    法律状态:
    2020-04-14| BA2A| Patent application published|Ref document number: 2753928 Country of ref document: ES Kind code of ref document: A1 Effective date: 20200414 |
    2020-09-23| FA2A| Application withdrawn|Effective date: 20200917 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201830983|2018-10-10|
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