FR3009944A1 - LARYNGOSCOPE BLADE OR VIDEOLARYNGOSCOPE FOR GUIDING THE INTUBATION PROBE WHEN INTRODUCED IN LARYNX - Google Patents

Abstract

The present invention is a laryngoscope blade or video-laryngoscope, having a guide passage of the probe open on the face in contact with the tongue.

Description

DESCRIPTION A laryngoscope or video-laryngoscope is an instrument used as part of the intubation procedure during general anesthesia to facilitate the placement of the intubation tube through which patient ventilation is performed. . The laryngoscope or video laryngoscope usually comprises two mechanically assembled parts: a reusable handle containing the lighting devices and a reusable or single-use invasive blade; in the case of a reusable blade it must be decontaminated between two interventions. The handle and the lighting device or image capture are generally partially decontaminated to preserve their life. The probe is guided during its introduction by a wedge shape of the part of the free tongue-contact blade or by a laterally open channel, the walls of which are provided with devices which hold the probe towards the distal part of the tongue. blade. Mechanical systems introduced into the probe make it possible to modify the curvature of the probe or the image of the endoscopes inserted in the probe to guide the introduction between the vocal cords; Their use requires the withdrawal after positioning of the probe, thereby showing the utility of the present invention which advantageously eliminates the use thereof. The patents: EP 2505125 A1 (AIRCRAFT MEDICAL) of April 29, 2004, US 2002/0087050 (RUDISCHHAUSER) of July 4, 2002 and EP 2535076 A1 (DE DOMENICO ANDREA) mention such a device.

The laryngoscope blades that use the present invention have, unlike existing solutions, the corner or the channel for guiding the tracheal probe open on the side of the face of the blade in contact with the tongue. The use of the instrument is then substantially improved, in particular thanks to the channel which allows the prepositioning or guiding of the probe on the blade; it is then sufficient to push the probe, while the vision of the vocal cords is performed with the instrument, to put it in place without trauma. The blade can then be extracted from the mouth without affecting the positioning of the probe. The channel (Fig. 4, No. 3) in which the probe is pre-installed (Fig. 5 No. 8) before the use of the blade or slipped once the discovered vocal cords is fully or partially open on its tongue surface (fig.3 and fig.4) in order to use the tongue itself as a guide element and hold the probe in the channel. The upper edges of the vertical outer wall of the channel may be aligned with the inner face of the blade (Fig. 2 No. 2). Depending on the depth of the channel, the pre-positioned probe, in cooperation with the borders of the canal serves as a complementary support surface on the tongue. The bottom wall of the channel can be aligned and in the plane of the outer face of the blade to make the blade smooth and easy to introduce into the mouth (Fig.1, No. 1). The dimensions and cross-sectional shapes of the channel may vary depending on the probes used (FIG. 5 No. 8). In order to maintain the probe in the case of a pre-positioned use and improve the guidance in other cases, one or the inner side walls of the channel may be slightly hollowed at the contact with the probe or provided with a longitudinal relief reducing the space between the walls above the diameter of the probe (Fig. 5 No. 8). The bottom wall of the channel which protrudes externally from the curvature of the blade may be in its internal part to the channel of variable thickness along its length (FIG. 4, No. 5, 6) in order to better accommodate the guidance of the probe. and in particular to modify the curvature of the probe in order to obtain a perfect aim between the vocal cords during its introduction.

The aim between the vocal cords (fig. 4 N ° 4) is predetermined and adjusted by the blade, the preformed axis of curvature of the probe is corrected by guiding the walls of the channel and the pressure exerted by the tongue. The aiming (direct optical sighting or captured) leads to the perfect introduction of the probe between the vocal cords the operator having only to push it and control its good positioning.

Laryngoscope blade whose tongue-contacting surface has a longitudinal channel open at its ends and along its length on the tongue side, allowing pre-positioning of the probe before insertion of the blade into the mouth and / or guiding of the tongue the probe after introduction of the blade into the mouth. Blade whose inner side walls of the channel may be slightly hollowed or provided longitudinally at about two-thirds of their height with a relief intended to hold and guide the probe in the channel. 20 25 30 35 40

Claims (5)

CLAIMS1) Laryngoscope blade whose surface in contact with the tongue has a longitudinal channel open at its ends and along its entire length on the tongue, allowing prepositionnenient the probe before the introduction of the blade in the mouth and / or the guide the probe after introducing the blade into the mouth. 2) blade according to claim 1, using the pressure exerted by the tongue on the face of the blade and the opening of the channel, to maintain the pre-positioned probe in the channel and make it take the curvature determined by the shape of the channel. 3) blade according to claims 1, 2, the internal curvature of the channel is associated with the sighting system, to allow the probe to marry this curvature and be introduced to the exact desired location 4) Blade according to any one of the preceding claims, the channel dimensions are adapted to those of the probes used. 5) Blade according to any one of the preceding claims, the inner side walls of the channel may be slightly hollowed or provided longitudinally at two thirds of their height about a relief for holding and guiding the probe in the channel. 25