FORM 2

THE PATENT ACT 1970

(39 OF 1970)

&

THE PATENTS RULES  2003

COMPLETE SPECIFICATION

(See SECTION 10  RULE 13)

1.TITLE OF THE INVENTION :

MAC C ATTACHMENT TO CONVENTIONAL LARYNGOSCOPE BLADE
2.APPLICANT

NAME : KRISHNA INSTITUTE OF MEDICAL SCIENCES

NATIONALITY: DEEMED TO BE UNIVERSITY DECLARED
U/S 3 OF UGC ACT  1956 VIDE
NOTIFICATION NO. F.9-15 / 2001 – U-3 OF
THE MINISTRY OF HUMAN RESOURCES
DEVELOPMENT  GOVT.OF INDIA

ADDRESS : KRISHNA INSTITUTE OF MEDICAL SCIENCES 
NEAR DHEBEWADI ROAD  MALKAPUR  KARAD
MAHARASHTRA  INDIA

3.PREAMBLE TO THE DESCRIPTION
PROVISIONAL

N / A COMPLETE

The following Specification particularly describes the nature of this invention and the manner in which it is to be performed :

4. TEACHING FIELD

The present invention relates to medical sciences and more particularly to the field of anaesthesiology.
5. BACKGROUND

A cleft lip with or without a cleft palate is one of the commonest congenital deformities. This abnormality occurs in association with over 150 syndromes. The worldwide incidence is 1 in 700-800 live births. The highest incidence occurs among Asians. Cleft lip is usually repaired between 6 to 12 weeks.
Children with cleft lip and palate need surgery for repair of their defect. For this anaesthesia has to be administered to them. During induction of anaesthesia a tube called endotracheal tube is passed into the trachea via the larynx so that anaesthetic gases and vapours are passed through them to the lung to keep them in anaesthesia state. The tube is passed with the help of an instrument called laryngoscope which is first passed into the mouth to view the larynx. In normal children the conventional laryngoscope is used. In children with cleft lip and palate there is a defect i.e. a cleft in the upper jaw. During laryngoscopy the flange of the laryngoscope blade sinks into this cleft and makes the view of the larynx difficult and hence passing the endotracheal tube becomes difficult.

Anaesthesia for cleft lip and cleft palate surgery involves difficult airway management. The conventional laryngoscope blade is unsatisfactory for laryngoscopy since it may be trapped by the alveolar cleft and anaesthesiologist may have to struggle during endotracheal intubation.
While inventing the model we took the reference of the Laryngoscope by digitising the laryngoscope with an accuracy of 0.050 mm  after getting the surface model from the digitisation we created the working plane and developed the attachment structure  and then we generated the profile keeping in mind the aesthetic  ergonomics  function of the attachment  and dimensions. Then we developed the profile with surface modelling after editing the surface and generation of vertices  edges and all other required criterion we developed it with solid modelling.
So a detachable moulded steel plate attachment to the laryngoscope blade is invented which consisted of a specially moulded steel plate which can be slid on to the flange of the laryngoscope blade with the idea that it would act as a bridge across the alveolar cleft and prevent the blade from sinking into the cleft and gives a good view of the larynx and facilitates the tracheal intubation.
6.SUMMARY

Hence there is need for a detachable attachment to the flange of a conventional laryngoscope blade that it would act as a bridge across the alveolar cleft and prevent the blade from sinking into the cleft and facilitate laryngoscopy and intubation.
A detachable moulded steel plate attachment to the laryngoscope blade which consisted of a specially moulded steel plate which can be slid on to the flange of the laryngoscope blade with the idea that it would act as a bridge across the alveolar cleft and prevent the blade from sinking into the cleft.
The Plate has aesthetic and ergonomic shape. The plate is both longitudinally as well as transversely curved  the tip of the plate has a smooth curve and tapers to avoid resistance while insertion. It has traumatic edges. The side unit containing the groove along its length is fixed to the flange of the convention laryngoscope blade with the help of two stainless steel screws and the upper portion of the alignment.
In addition it initially runs straighter course for 1/3 the length of the flange of the conventional laryngoscope and then tapers smoothly and gradually towards the tip.
7. BRIEF DESCRIPTION OF DRAWINGS:

Fig.1 front view (1) of MAC C ATTACHMENT TO CONVENTIONAL LARYNGOSCOPE BLADE.
Fig. 2 left hand side view (2) MAC C ATTACHMENT TO CONVENTIONAL LARYNGOSCOPE BLADE.
Fig. 3 top view (3) MAC C ATTACHMENT TO CONVENTIONAL LARYNGOSCOPE BLADE.
Fig. 4 right hand side view (4) MAC C ATTACHMENT TO CONVENTIONAL LARYNGOSCOPE BLADE.
Fig. 5 isometric view (5) MAC C ATTACHMENT TO CONVENTIONAL LARYNGOSCOPE BLADE.
Fig. 6 bottom view (6) MAC C ATTACHMENT TO CONVENTIONAL LARYNGOSCOPE BLADE.

8.DETAILS DESCRIPTION OF DRAWINGS:

Fig. No. 1:-
Front view (Figure 1): The Total length of the attachment is 68.5 mm. (Delta Y) & the total width is 31mm. (Delta X). The side sliding panel incorporates a groove to slide over and fix to the flange of the conventional Macintosh laryngoscope blade. It is curved from side to side parallel to the front of the upper end of the conventional blade as well as longitudinally to properly align with the conventional blade. It tapers smoothly to the lower end. The side sliding panel is fixed to the upper straight part of the conventional blade with its own straight portion with help of 2 stainless steel screws having smooth non traumatic edges.
Fig. No. 2:-
Left Hand Side view (Figure 2): This view shows the longitudinal curvature.
Fig. No. 3:-
Top view (Figure 3): It demonstrates the transverse curvature of the plate.
Fig. No. 4:-
Right Hand Side view (Figure 4): It shows the longitudinal grove spanning along its length.
Fig. No. 5:-
The isometric view (Figure 5) exhibits the inside view of the blade. It demonstrates the longitudinal as well as the transverse curvature; the straighter upper part  the lower tapering portion  the side sliding panel with its groove.
Fig. No. 6:-
The bottom view (Figure 6) This shows how the curvature looks from the bottom specially the grove in the edge to fit on to the flange of the laryngoscope

9.I claim

1. The MAC C ATTACHMENT TO CONVENTIONAL LARYNGOSCOPE BLADE is a detachable attachment to a conventional laryngoscope acting as a bridge across the alveolar cleft and prevents the blade from sinking into the cleft at the time of laryngoscopy and intubation for cleft lip and palate children  has both longitudinal and transverse curvature which tapers from top to bottom end smoothly with a traumatic edges  the edge near the flange is straight in the front view but has longitudinal curve in the side view and the opposite free edge of the attachment has longitudinal curvature on the side view; in addition  it initially runs straighter course for 1/3 the length of the flange of the conventional laryngoscope and then tapers smoothly and gradually towards the tip.
2. This is the first time such simple  low cost instrument is made available for use in general anaesthesia for the surgery of cleft lip children.

Dated this 29th Day of August  2012

DR.M.V.GHORPADE
(REGISTRAR)
FOR KRISHNA INSTITUTE OF MEDICAL SCIENCES

To
The Controller of Patents 
The patent office 
At Mumbai – 400 037

10.ABSTRACT OF THE INVENTION

A detachable moulded steel plate attachment to the laryngoscope blade which consist a specially moulded steel plate which can be slid on to the flange of the laryngoscope blade with the idea that it would act as a bridge across the alveolar cleft and prevent the blade from sinking into the cleft.

DR.M.V.GHORPADE
(REGISTRAR)
FOR KRISHNA INSTITUTE OF MEDICAL SCIENCES