WO2021220214A1 - Device for simplified endotracheal intubation - Google Patents

Abstract

Disclosed herein is a dual bladed laryngoscope marked by inclusion of a moveable palate blade for quickly and easily intubating a patient while allowing enhanced photographical inspection, with enhanced illumination, during endotracheal intubation characteristically by mounting of the means of illumination and visualization at the distal end of said moveable palate blade.

Description

DEVICE FOR SIMPLIFIED ENDOTRACHEAL INTUBATION

Cross references to related applications: This international application claims priority from Indian patent application No. 202021013920 dated 30 March 2020, the contents of which are incorporated herein, in their entirety, by way of reference.

Field of the invention

The present invention belongs to the field of instruments for performing medical examinations of interior cavities or tubes of the human body by visual, videographic or photographical inspection, and therein generally relates to the art of endotracheal intubation. More particularly, the present invention relates to a dual bladed laryngoscope the construction and resultant operability of which facilitates confirmed and predictable laryngeal exposure for consistently successful intubation.

Definitions

Before undertaking the description of the invention below, it may be advantageous to set forth definitions of certain words or phrases used throughout this patent document. Also, as some technical terms are not used uniformly in the field of the instant invention, a few definitions are given in the following to clarify the meaning of terms as they are used in this paper. Accordingly, the term “EOA” refers Esophogeal Obturator Airway, “EGTA” refers Esophagogastric Tube Airway, “LMA” refers Laryngeal Mask Airway. References to proximal / distal etc are in reference to proximity to the laryngoscopist when performing intubation on a patient.

Background of the invention and Technical issues to be resolved

It is sometimes required in critically injured, ill, or anesthetized patients to position an endotracheal tube in the airway, to thereby accomplish one or more among the following purposes- a) Isolation of the airway of the patient; b) reducing the risk of aspiration; c) permitting effective suctioning of the trachea; d) ensuring delivery of a high concentration of oxygen, anesthetic gases and vapors; e) administration of particular drugs in high doses; and / or f) ensuring delivery of a selected tidal volume to maintain adequate lung inflation.

To achieve one or more of the aforementioned purposes, endotracheal intubation is required and so traditionally performed using either or combination of laryngoscopes, stylets, and tracheal tubes. One way of achieving endotracheal intubation, called orotracheal intubation, is via the patent's mouth, down the oropharyngeal airway and down at least a portion of said patient’s trachea. Alternatively, intubation may be achieved by a procedure termed nasotracheal intubation via the patent's nose, down the oropharyngeal airway and down at least a portion of said patient’s trachea. Thus it will be generally understood that endotracheal intubation is by large an invasive and uncomfortable medical procedure in which the consequences of failure are grave.

Another drawback of conventional procedures for achieving endotracheal intubation is that they often result in trauma to the patient, especially cases are reported wherein front teeth of the patient are chipped / broken while inserting laryngoscopes into the patient’s oral cavity, or that the pharyngeal or tracheal mucosa are lacerated therein resulting in bleeding, hemotoma, or abscess formation, besides that the trachea may get ruptured, vocal cords may be damaged. Also, accidental insertion of the endotracheal tube into the esophagus may result in the grave risk of no ventilation or oxygenation.

From the academic overview presented above, the reader shall easily appreciate that successful intubation of a patient’s airway mandates advanced skills of highly trained practitioners and which yet remains prone to high risks of complications. The procedure is further complicated by extremely small window of time in which it needs to be performed to maintain loss of ventilation and oxygenation to the patient while undertaking endotracheal intubation. Globally, the medical fraternity presupposes maximum interruption of the patient's ventilation allowable while intubation being approximately 30 seconds, and preferably 15 seconds. There hence exists a need for establishment of simplified and mistake-proof procedures, and means for achieving the same assuredly without any chance of mistake (called ‘blind’ manner) for achieving predictable laryngeal exposure for consistently successful intubation. Modern laryngoscopes are equipped with means for illumination and image capture for allowing the medical practitioner to visualize the zone of intubation. However a general drawback observed in these devices is that line of sight provided is rigid, and adequate and reliable view of larynx for tracheal intubation is not possible. The art provides alternative devices such as lighted stylets and number of flexible and rigid video laryngoscopes for addressing this issue, but they all require lot of efforts to train medical and paramedical persons to use them reliably and successfully. More over none of these instruments provide wide mouth opening which is useful for easy insertion of endotracheal tube nor do they provide adequate mouth opening for introduction of surgical instruments.

The American society of Anesthesiology Task Force defines difficult laryngoscopy as “Inability to visualize any part of vocal cord after multiple attempts” and difficult tracheal intubation as “one which requires multiple attempts”. Though successful accomplishment of tracheal intubation is important, but that alone is not enough. Intubation without an adequate laryngeal view is notably a near miss. Therefore, it is sorely needed in art to provide some means that improve airway management and avoid reliance on luck and multiple forceful attempts for achieving successful tracheal intubation with adequate laryngeal view.

From the foregoing narration, at least the following issues as to the prior art devices and techniques for endotracheal intubation are identified to be resolved -

1 ) Inability to assure adequate ventilation or oxygenation

2) Inability to assure adequate airway management in a single intubation attempt

3) Inability to assure the non-occurrence of difficult laryngoscopy

4) Inability to assure the non-occurrence of difficult tracheal intubation

5) Inability to assure the non-occurrence of trauma to the patient

6) Inability to avoid rigidity in line of sight, illumination, and / or real time image or video capture available in prior art laryngoscopes

Description of related art

While there were many common art references researched by the inventor(s) in ensuring that the present invention is novel, the following patent prior art was identified as related to the present invention, and thus worthwhile to discuss in more detail in context of the present invention. Examples of such devices can be observed in US6991604B2 (issued to Scope Co Inc) which discloses a dual blade laryngoscope with esophageal obturator, US8715172B1 (issued to Magdy S. Girgis) which discloses a double bladed laryngoscope having video camera and liquid crystal display for facilitating intubation procedure; US8419634B2 (issued to University Hospitals of Cleveland) which discloses an apparatus (dynamical articulating laryngoscope) and method for airway management; US8444556B2 (issued to Matthew Alan Minson) which discloses a self-retaining laryngoscope composed of a palate brace or blade, a slider, and a tongue blade; US5938591 A (issued to MScope LLP) which discloses a self-retaining disposable laryngoscope having dual light conductive blades that open and lock apart laterally and/or radially; US6090040A (issued to R. J. Metro) which discloses a periscope and retracting laryngoscope for intubation US20030018239A1 (assigned to Cartledge Medical Products LLC) which discloses a modified laryngoscope blade and a disposable insert which is designed to be received and retained in a single step by the modified laryngoscope blade, to thereby reduce dental injuries during intubation; EP0703749A1 (issued to Brummert Manfred) discloses a Laryngoscope for exposing a patient's pharyngeal cavity which may be implemented without the need to exert great force and without any danger of damage to the patient's incisors.

Prior art therefore, does not list a single effective solution embracing all considerations mentioned hereinabove, thus preserving an acute necessity-to-invent for the present inventor/s who, as result of focused research, has come up with novel solutions for resolving all needs once and for all. Work of the presently named inventor/s, specifically directed against the technical problems recited hereinabove and currently part of the public domain including earlier filed patent applications, is neither expressly nor impliedly admitted as prior art against the present disclosures.

Objectives of the present invention

The present invention is identified in addressing at least all major deficiencies of art discussed in the foregoing section by effectively addressing the objectives stated under, of which-

A primary objective is to provide a laryngoscope design which allows medical practitioners to successfully perform endotracheal intubation with minimal skills and effort. Another objective is to provide a laryngoscope design which ensures adequate ventilation or oxygenation while performing endotracheal intubation.

It is an objective of the present invention to provide a laryngoscope which allows full range of motion of the temporomandibular joint while a person is being intubated.

It is a further objective of the present invention to provide a laryngoscope which allows sufficient pharyngeal space while a person is being intubated.

It is a further objective of the present invention to provide a laryngoscope which allows sufficient oral and mandibular space and mouth opening while a person is being intubated.

Another objective is to provide a laryngoscope design which ensures successful endotracheal intubation in the first attempt, therein positively ruling out difficult laryngoscopy and / or difficult tracheal intubation.

Another objective is to provide a laryngoscope design which ensures none or at least minimal trauma to the patient while undertaking endotracheal intubation.

Another objective is to provide a laryngoscope design which allows medical practitioners to have a real time, clear, non-rigid and adequate visualization of the zone of intubation.

Another objective is to provide a laryngoscope design which is simple, robust and long-lasting, capable and easy to mass-produce, cost-effective, and easy to master, operate and / or repair.

The manner in which the above objectives are achieved, together with other objects and advantages which will become subsequently apparent, reside in the detailed description set forth below in reference to the accompanying drawings and furthermore specifically outlined in the independent claims. Other advantageous embodiments of the invention are specified in the dependent claims.

A better understanding of the objects, advantages, features, properties and relationships of the present invention will be obtained from the following drawings and their contextual reference in the detailed description hereinunder which sets forth an illustrative yet-preferred embodiment.

Brief description of drawings

In order to understand the invention and to see how it can be carried out in practice, preferred embodiments will now be described, by way of non-limiting examples only, with reference to the accompanying drawings in which-

Figure 1 is a schematic exploded view to explain the construction of the laryngoscope of the present invention.

Figure 2 is a front perspective view of the laryngoscope of the present invention. Figure 3 is another front perspective view of the laryngoscope of the present invention.

Figure 4 is a cross-sectional view showing internal assembly of the laryngoscope of the present invention.

Figure 5 is a front perspective view showing internal assembly of the laryngoscope of the present invention.

Figure 6A is a front-side view showing the handle (02) of the laryngoscope of the present invention.

Figure 6B is a rear-side view showing the handle (02) of the laryngoscope of the present invention.

Figure 7 A is a front-side view showing the tongue blade (03) of the laryngoscope of the present invention.

Figure 7B is a rear-side view showing the tongue blade (03) of the laryngoscope of the present invention.

Figure 8 is a front perspective view to explain the arm linkage included in the retracting mechanism in accordance with the disclosures hereof.

Figure 9 is a front perspective view to explain the pivot and spring-loaded anchorage included in the retracting mechanism in accordance with the disclosures hereof.

Figure 10 is a front perspective view to explain the displacement of the palate blade (04) in accordance with the disclosures hereof.

Figure 11 is a schematic isolated view of the palate blade (04) in accordance with the disclosures hereof.

Figure 12 is a schematic isolated view of the mounting module (06) in accordance with the disclosures hereof. Figure 13 is a schematic isolated view of the image capture insert (32) in accordance with the disclosures hereof.

The above drawings are illustrative of particular examples of the present invention but are not intended to limit the scope thereof. The drawings are not to scale (unless so stated) and are intended for use solely in conjunction with their explanations in the following detailed description. In above drawings, wherever possible, the same references and symbols have been used throughout to refer to the same or similar parts, as under-

(01) - Laryngoscope (19) - Pivot pin

(02) - Handle (20) - Spring

(03) - Tongue blade (21) - Web

(04) - Palate blade (22) - Illumination tube of (03)

(04A) - Distal part of (04) (23) - Central inset

(04B) - Middle part of (04) (24) - Lowermost inset

(04C) - Proximal part of (04) (25) - Middle inset

(05) - Lever (26) - Power cable

(06) - Mounting module (27) - Data cable

(07) - Electronic display (28) - Uppermost inset

(08) - Tubular compartment (29) - Cushioning element

(09) - Light source (30) - Eyelet in (18)

(10) - Hook-on base (31) - Eyelet in (04)

(11) - Seat (32) - Image capture insert

(12) - Screw cap (33) - Slot for camera

(13) - Heel (34) - LED lights of (04)

(14) - Slip-groove (35) - Eyelet of (03)

(15) - Hinge pin (36) - Blunt tip of (03)

(16) - Spring-loaded protrusions (37) - LED lights

(17) - Spatula (38) - Flexible cable

(18) - Linker arm

Though numbering has been introduced to demarcate reference to specific components in relation to such references being made in different sections of this specification, all components are not shown or numbered in each drawing to avoid obscuring the invention proposed Summary of the invention

The present invention is directed toward a dual-bladed laryngoscope with an enhanced illumination and visualization arrangement. A moveable palate blade is disposed pivotably within the spatula of a tongue blade in conjunction with a manually-actuated retraction mechanism, which allows a laryngoscopist to undertake endotracheal intubation. Enhanced photographical / videographical inspection during endotracheal intubation is enabled by mounting of the means of illumination and visualization at the distal end of said moveable palate blade, the imagery output of which is related to an electronic display disposed within eyesight of the laryngoscopist.

Attention of the reader is now requested to the detailed description to follow which narrates a preferred embodiment of the present invention and such other ways in which principles of the invention may be employed without parting from the essence of the invention claimed herein.

Detailed description

The present invention is directed at absorbing all advantages of prior art while overcoming, and not imbibing, any of its shortfalls, to thereby establish a dual bladed laryngoscope for quickly and easily intubating a patient, while allowing enhanced photographical inspection during endotracheal intubation via adduced means for image capture and illumination.

From an academic view point, four anatomic features must be present for orotracheal intubation to be straightforward: adequate mouth opening (full range of motion of the temporomandibular joint), sufficient pharyngeal space (determined by examining the back of the mouth), sufficient submandibular space (distance between the thyroid cartilage and the chin, the space into which the tongue must be displaced in order for the laryngoscopist to view the glottis), and adequate extension of the cervical spine at the atlanto-occipital joint. If any of these variables is in any way compromised, intubation should be expected to be difficult (Benumof (2007), Hagberg CA, Georgi R and Krier C, Chapter 48: Complications of managing the airway, pp. 1181-218). These all are embodied while performing endotracheal intubation using the laryngoscope (01) proposed herein, hence qualifying technical requirements as well as needs of art once and for all. Construction of the inventive laryngoscope design proposed herein is explained now with reference to the accompanying figures. As shown in Figures 1 , 2 and 3, the laryngoscope (01) proposed herein includes foremost, a handle (02) for allowing a laryngoscopist to grip and maneuver the laryngoscope (01 ). Performance of intubation is provisioned by means of an intubation module comprising one tongue blade (03) and one palate blade (04). Said palate blade (04) is moveable upon actuation of a lever (05) at instance of the laryngoscopist. The palate blade (04) is outfitted with a mounting module (06) to carry inserts for illumination and visualization of the operative envelope occasioned by the intubation process. An electronic display (07) is provided in communication with the means of visualization whereby the laryngoscopist may visualize the images / video captured while intubation is being carried out.

As further seen in Figures 1 , 2 and 3 and particularly the Figure 11 , palate blade (04) has 3 parts and is connected to ancillaries as under- a) Cushioning element (29) - this is positioned towards the palate side (of the person being intubated) and helps in transmitting the retracting force evenly on the palate over a large surface area, thereby preventing injury to the palate. It is made of soft silicone or latex material or any other soft material certified for medical use; b) Electronic part / Image capture insert (32) It is positioned in the canal formed by insets (23 and 25). It has a camera in a slot (33) which is surrounded by LED lights (37) thus providing additional illumination for better visualization. As the camera in slot (33) is placed close to the area being visualized it gives unhindered images of the area. Power to the camera and LED lights (37) of this part is supplied by a battery provided with the display screen (07) and connected to the display screen by flexible cable (38). Cable (38) conducts both the data cable (27) and power cable (26). c) Retracting arm (18): It is made up of stainless steel or any other suitable metal or plastic material used in the art of making laryngoscopes.

The mounting module (06) is provisioned for holding the aforementioned parts of the palate blade tightly together when in use. It is made of latex rubber or any other stretchable material certified for medical use.

According to related aspects hereof, the handle (02) is sufficiently dimensioned, elongated, of cylindrical geometry, textured and / or contoured for allowing non-slip grip while ensuring comfortable ergonomics for human hands. According to further related aspects hereof, the electronic display (07) may be selected from among any conventional digital displays, or in further embodiments hereof, the imagery signal captured may be relayed via wired or wireless means to a suitable electronic display with means of receiving such feed relayed via cables or over-the-air.

According to further related aspects hereof, a library of intubation modules differing by curvatures and dimensions is intended to be additionally provided along with the laryngoscope (01 ) for selection by the laryngoscopist as per age, dimensions, build, and other physiological parameters of the person to be intubated, in order to ensure sufficient oral and pharyngeal space and sufficient mouth opening while performing the intubation procedure or furthermore allow the laryngoscopist to best localize the procedure to suit oddities including unusual airway anatomy of the patient such as those who have limited movement of their neck or jaw.

An upright orientation of the handle (02) is shown in the Figure 4. As seen here, the handle (02) is hollow, therein forming a tubular compartment (08) for housing batteries and a light source (09), the latter being a LED module in particular. The tongue blade (03) is affixed via welding or alternatively casted in one piece with a hook-on base (10) for allowing the intubation module to be releasably received at a seat (11 ) provisioned atop one end of the handle (02). The other free end of the handle (02) forms a mouth for receiving batteries to power the light source (09). Said free end of the handle (02) is arranged to be sealed shut by means of a screw cap (12).

As conventionally practiced in related art, the auxiliary light source (09) includes a spring-loaded LED housing is disposed protruding through the seat (11 ). Said spring- loaded LED housing is pressed downward when the base (10) is engaged with the seat (11 ), to thereby switch ON the LED module so as to provide illumination whenever the laryngoscope (01 ) is readied for use. As will be appreciated, this invention inventively proposes a dual illumination system comprising the light source (09) the output of which is provided by tube (22) aligned along the tongue blade (03) in addition to the LED lights (37) provided in the insert (32).

As further seen in Figures 4, 5 and 6, the base (10) and the seat (11 ) are provisioned to have mated interlocking means which allow them to releasably engage with each other in a snap-fit arrangement. Particularly, the base (10) has a heel (13) having a slip-groove (14) machined therewithin, which is arranged to mate and lock with a hinge pin (15) provided on the seat (11). Once in this position, the assembly is locked in place with help of a pair of outward-directed spring-loaded protrusions on opposing sides of the base (10) with mated depressions in inner walls of the portion of the seat (11) which receives the base (10) as provisioned in conventional laryngoscopes.

As shown in Figure 7, the tongue blade (03) has a curved three-dimensional profile to mimic natural curvature of the lumen presented by the oral cavity and trachea. The profile is formed by two flanges forming a spatula (17). Said flanges are separated by a wedge shaped web (18) and meet at a blunt tip (36) to thus allow adequate mouth opening of the person being intubated. In additional embodiments hereof, the tongue blade (03) is designed to have a shape selected either between a straight blade having curved tip or that the entire blade is curved.

In another aspect hereof seen in Figures 5 and 7, light emanating from the light source (09) is conveyed via mated and aligned optical openings in the base (10) and seat (11 ) and thereafter through a illumination tube (22) to intersect the web (21 ) near the latter’s distal tip to therefore convey the light to the distal portion of the laryngoscope (01).

As shown in Figures 8, 9 and 10, a linker arm (18) is moveably affixed about a pivot pin (19) and held in position under the resting (extended / relaxed) position of a helical spring (20). This spring is selected of suitable resilience to allow maintenance of fully open and closed positions of the palate blade (04) via lever (05) within reasonable effort on part of the laryngoscopist. The pivot pin (19) is welded / casted in single piece / fixed into the web (21) via screw bolting arrangement via eyelet (35) to protrude normally from the inner surface of the web (21). The lever (05) is welded / casted in single piece with the linker arm (18). The pivot pin (19) is arranged to pass through mated eyelets (30 and 31 , in other words, pivot points) of 5 mm internal diameter provisioned within the linker arm (18) and the base of palate blade (04) respectively to thereby result in a single pivot point for the assembly, and thus the mechanism for the tip of the palate blade (04) to be travel / be displaced upon actuation of the lever (05) by the laryngoscopist. The linker arm (18) and the palate blade (04) are held in place about said pivot, by having the head of the pivot pin (19) of a diameter larger than the eyelets, and welding the pivot pin (19) in place after passing through said eyelets.

As seen further in Figures 8, 9 and 10, actuation of the lever (05) by displacement in direction of the handle (02) thus pulls the linker arm (18) downward against compression of the spring (20), which in turn causes the palate blade (04) to pivot about the pivot pin (19) and occasion the tip of the palate blade (04) to be travel / be displaced within a freedom of movement admeasuring 30 mm travel between its resting position to fully displaced position to thereby give wide opening of mouth to give passage for unhindered passage of endotracheal tube, anesthesia and surgical instruments. Releasing of the lever (05) by the laryngoscopist pivots the base of the linker arm (18) to raise under release action of the spring (20) to thereby return the palate blade (04) to its resting form.

According to an inventive aspect hereof, the tongue blade (03) is fixed in position, while the palate blade (04) is moveable. As seen in the Figure 10, the palate blade (04) is disposed within profile of the tongue blade (03) in a moveable manner to thus allow the laryngoscopist to push the palate and tongue away from each other and hold oral cavity open without pressure on the front teeth to allow better and easier visualization of the oral cavity, pharynx and larynx and allow the passage of endotracheal tube and ancillary equipment besides maximizing the envelope available to the laryngoscopist through digital visualization system laryngoscopist to have clear and effective visualization of the area of interest / desired serviceable envelope within the intubated zone, that is, the oropharynx and larynx area, without any hindrance.

As shown in Figure 11 , the mounting module (06) is provisioned to carry inserts for illumination and visualization of the operative envelope occasioned by the intubation process. To achieve this, the mounting module (06) is provisioned with a single central inset (23) on one side, and three vertically-stacked insets on its opposing side. The single central inset (23) receives the image capture insert (32) for the camera and illumination conveyed by the LED lights (34). Here, it shall be appreciated that said three insets (24, 25 and 28) are provisioned in a vertically-stacked orientation on one side of the mounting module (06) of which a the inset (25) is allowed to emerge centrally on the opposing side of the mounting module (06) as a single inset (23). It shall be further understood that the illumination tube (22) otherwise provided conventionally may still be retained as an auxiliary light source. The image capture insert (32) has a slot (33) for the camera for capturing still / motion pictures of the site of intubation, and LED lights (34) for illuminating said site of intubation.

As seen further in Figure 11 , among the three vertically-stacked insets (or in other words, which are decked atop each other), the lowermost inset (24) of the mounting module serves to receive the distal part (04C), while the continuous canal starting from inset (23) to emerge from the opposing side of (06) at middle inset (25) serves to receive the Image capture insert (32). Cable (38) of the Image capture insert (32). comes out from the middle inset (25). The uppermost inset (28) serves to receive soft cushioning element (29). Cable (38) serves for encasing the data cable (27) and power cable (26), and the uppermost inset (28) serves for receiving a soft cushioning element (29).

According to related aspects hereof, the cushioning element (29) is made of a soft material such as latex rubber which is biocompatible and certified as safe for medical use (to avoid injury to palate. Said component affords necessary surface contact to transfer pressure to hard palate when the laryngoscopist actuates the lever (05) to open the intubation site. Other parts of the laryngoscope (01 ) taught herein are made of conventional surgically-compatible grade of metals or plastics or equivalent material or combinations thereof.

From the foregoing narration, an able laryngoscope for quickly and easily intubating a patient, while allowing enhanced photographical inspection during endotracheal intubation is thus provided with improved ease of use and functionality than any of its closest peers in state-of-art. Protocol of intubation is the same as the one being practiced conventionally, therein requiring no additional skills or learning on part of the laryngoscopist using the laryngoscope (01 ) taught herein.

It shall be realized by the reader that, with presently available laryngoscopes, medical and paramedical personnel require a lot of training for intubation and in spite of such training, there yet remains a significant failure rate and near-miss situations while achieving successful intubation. In stark contrast, with the device proposed in the present invention, the training required to be given to medical and paramedical personnel for intubation would be far less than laryngoscopes available now or described before this invention. With the device of the present invention, failure rate and near-miss situations are anticipated to go down considerably even in less-trained hands.

It shall further be generally understood by the reader that the modularity in construction of the dual bladed laryngoscope disclosed in this paper mandates part- wise serviceability and severance in parts that need to be replaced (particularly only those experiencing wear and tear) over replacement of the entire laryngoscope, thus saving on maintenance and operational costs, besides enhancing service life of the laryngoscope.

As will be realized further, the present invention is capable of various other embodiments and that its several components and related details are capable of various alterations, all without departing from the basic concept of the present invention. Accordingly, the foregoing description will be regarded as illustrative in nature and not as restrictive in any form whatsoever. Modifications and variations of the system and apparatus described herein will be obvious to those skilled in the art. Such modifications and variations are intended to come within ambit of the present invention, which is limited only by the appended claims.

Claims

Claims

I claim:

1 ) A laryngoscope for endotracheal intubation, comprising- a) An elongated handle (02) having a seat (11 ) at one of its ends for allowing a laryngoscopist to hold and maneuver said laryngoscope in order to perform endotracheal intubation on a patient; b) a hook-on base (10) for releasable engagement with the seat (11 ) of the handle (02); c) A dual-blade assembly attached to the hook-on base (10), said dual blade assembly consisting of a tongue blade (03) and a palate blade (04) disposed from within base of said tongue blade (03) towards blunt tip (36) of said tongue blade (03); d) An auxiliary illumination module internalized within the handle (02) from which illumination is conveyed to the site of intonation via an illumination tube (22) passing through the hook-on base (10) and seat (11 ) to emerge along the tongue blade (03); e) A pivoting retractable mechanical linkage consisting of a spring-loaded linker arm (18) and lever (05) connected to the palate blade (04) for allowing the laryngoscopist to elevate the palate blade (04) in order to hold open the airway of the patient being intubated; and f) A mounting module (06) to be received on the palate blade (04), said mounting module (06) being provisioned with purposefully positioned insets for receiving each among the tip (04A) of the palate blade (04), a cushioning element (29) and an illumination and image capture insert (32).

2) The laryngoscope for endotracheal intubation as claimed in claim 1 , wherein the handle (02) is profiled hollow and capped at the free end by means of a screw cap (12) to thereby internalize the auxiliary illumination module and having its

3) The laryngoscope for endotracheal intubation as claimed in claim 2, wherein the external surface contoured to allow ergonomic grip for the laryngoscopist.

4) The laryngoscope for endotracheal intubation as claimed in claim 2, wherein the auxiliary illumination module is a spring-loaded LED housing disposed to protrude through the seat (11 ) in a manner thereby allowing said spring- loaded LED housing to be pressed downward when the base (10) is engaged with the seat (11 ), to thereby switch ON the LED module so as to provide illumination whenever the laryngoscope is readied for use by the laryngoscopist.

5) The laryngoscope for endotracheal intubation as claimed in claim 1 , wherein the tongue blade (03) is selected to have a shape selected between curved and straight varieties having curved tip and profiled by means of a wedge shaped web (18) separating two flanges forming a spatula (17) and ending in a blunt tip (36).

6) The laryngoscope for endotracheal intubation as claimed in claim 1 , wherein the pivoting retractable mechanical linkage consists of the spring-loaded linker arm (18) and the palate blade (04) being arranged to pivot about a pivot pin (19) which is passed through respective mated eyelets (30 and 31 ) and affixed to the web (21 ) of the tongue blade (04) by means selected among spot welding, monolith casting, and screw fitting through eyelet (35).

7) The laryngoscope for endotracheal intubation as claimed in claim 1 , wherein the purposefully positioned insets consist of three insets (24, 25 and 28) in a vertically-stacked orientation on one side of the mounting module (06) of which a the inset (25) is allowed to emerge centrally on the opposing side of the mounting module (06) as a single inset (23).

8) The laryngoscope for endotracheal intubation as claimed in claim 7, wherein the set of insets are purposed to receive a specific insert, particularly- a) inset (24) is provisioned to receive the tip (04A) of the palate blade (04) for mounting of the mounting module (06) onto said palate blade (04); b) inset (28) is provisioned to receive the cushioning element (29) made of a biocompatible material, latex rubber in particular; and c) inset (23) is provisioned to receive the illumination and image capture insert (32) from which the a cable (38), encasing a data cable (27) and power cable (26) therewithin, can emerge from inset (25) on the opposing side.

9) The laryngoscope for endotracheal intubation as claimed in claim 8, wherein the illumination and image capture insert (32) includes a centrally disposed slot (33) for a digital camera, the illumination for which is provided by led lights (34) arranged along periphery of the slot (33).

10) The laryngoscope for endotracheal intubation as claimed in claim 1 , wherein the spring used for the spring-loaded linker arm (18) with connected lever (05) is a helical spring of resilience sufficient to maintain resting and open positions of the palate blade (04) within reasonable effort on part of the laryngoscopist.

11 ) The laryngoscope for endotracheal intubation as claimed in claim 1 , wherein the base (10) and the seat (11 ) are provisioned to have mated interlocking means which allow them to releasably engage with each other in a snap-fit arrangement, said mated interlocking means consisting of- a) a heel (13) having a slip-groove (14) provisioned on the base (10) which is arranged to mate and lock with a hinge pin (15) provided on the seat (11 ); and b) a pair of outward-directed spring-loaded protrusions on opposing sides of the base (10) with mated depressions in inner walls of the portion of the seat (11 ) which receives the base (10) to releasably lock the base (10) and the seat (11 ) in place when engaged with each other. 12) The laryngoscope for endotracheal intubation as claimed in claim 1 , wherein the free end (04A) of the palette blade (03), and the top side of mounting module (06) are profiled to have surfaces simulating the contours of a human palette and provisioned with the cushioning element (29) to avoid injury while intubation of the patient.