Title of Invention	SUPRAGLOTTIC DEVICE FOR AIRWAY MANAGEMENT
Abstract	A supraglottic device for airway management comprising: a. Two tubes (A, B) one inside the other b. Two external cuffs (C, D) - one oesophageal and other pharyngeal c. One internal cuff (E) for obliterating the lumen of the internal tube at distal end. d. Three inflating balloon (G, H, 1) one for each cuff. It has 8 side slits (F) for ventilation when tube is in oesophagus e. Universal connector (K) for connecting the device to breathing circuit or AMBU-bag. There may be occasions when endotracheal intubation is not possible, but maintaining the patency of upper airway and preventing tracheal aspiration is required. Hence we designed this device as an alternative to laryngeal or tracheal placement. Blind insertion results in high probability to esophageal placement. In this case the obturator balloon is inflated to occlude lumen of the tube to prevent the air entry to stomach. The distal cuff is inflated with 10-15 ml of air to prevent peritubal leak and esophageal regurgitation, proximal cuff is inflated with 80-100 ml of air to prevent the escaping of gases through the mouth and nose, so gases go into the laryngeal inlet. The device has following advantages: • The technique of insertion is easy so can be used successfully in emergency situations and also where personnel trained in tracheal intubation are not available. • It can be used in patients with cervical spine injury in which neck movement should be avoided. • It can be used in patient with different height. • It can be used in patients with restricted month opening by nasal route.

Title of Invention

SUPRAGLOTTIC DEVICE FOR AIRWAY MANAGEMENT

Abstract

A supraglottic device for airway management comprising: a. Two tubes (A, B) one inside the other b. Two external cuffs (C, D) - one oesophageal and other pharyngeal c. One internal cuff (E) for obliterating the lumen of the internal tube at distal end. d. Three inflating balloon (G, H, 1) one for each cuff. It has 8 side slits (F) for ventilation when tube is in oesophagus e. Universal connector (K) for connecting the device to breathing circuit or AMBU-bag. There may be occasions when endotracheal intubation is not possible, but maintaining the patency of upper airway and preventing tracheal aspiration is required. Hence we designed this device as an alternative to laryngeal or tracheal placement. Blind insertion results in high probability to esophageal placement. In this case the obturator balloon is inflated to occlude lumen of the tube to prevent the air entry to stomach. The distal cuff is inflated with 10-15 ml of air to prevent peritubal leak and esophageal regurgitation, proximal cuff is inflated with 80-100 ml of air to prevent the escaping of gases through the mouth and nose, so gases go into the laryngeal inlet. The device has following advantages: • The technique of insertion is easy so can be used successfully in emergency situations and also where personnel trained in tracheal intubation are not available. • It can be used in patients with cervical spine injury in which neck movement should be avoided. • It can be used in patient with different height. • It can be used in patients with restricted month opening by nasal route.

Full Text	This invention relates to supraglotic device for airway management particularly when it is not possible to ventilate or intubate or for ventilation where very high ventilatory press, is not required. Various supraglottic devices have existed in prior art. Generally, the supraglottic devices are inserted through the mouth. For the maintenance of airway patency and administration of oxygen or anaesthetic gases through AMBU Bag or anaesthetic circuit. Prior existing devices cannot be used from nasal route if required to do so because of severe restriction of mouth. This device has been designed as an alternative to other supraglottic devices like combitube in which there are two parallel tube, whereas in this device, one tube is inside the other so the so the diameter of device of the tube is reduced due to which it can be used from nasal route also. Due to one tube inside the other there are less chances of kinking or obstruction of the tube due to biting. Object of invention To develop a device which can be used in short statured patients and in children for securing airway as an alternative to combitube, another object of the invention is to develop a supraglottic device which can be used from nasal route as well. Statement of the invention A supraglottic device for airway management comprising: Two tubes (A, B) one inside the other, Two external cuffs (C, D) - one oesophageal and other pharyngeal, One internal cuff (E) for obliterating the lumen of the internal tube at distal end, Three inflating balloon (G, H, I) one for each cuff. It has 8 side slits (F) for ventilation when tube is in oesophagus, Universal connector (K) for connecting the device to breathing circuit or AMBU-bag. Brief Description of accompanying drawings Fig.l is a perspective view of the device. Fig. 2 is a cross-sectional diagram of the human airway. Fig.3 shows the method of insertion of the device. fig. 4 shows cross-section of airway with device in trachea Fig. 5 shows cross-section of airway with proximal tip of device in oesophagus Detailed Description of the Invention with reference to drawings The following description refers to a preferred embodiment of the device. To facilitate an understanding of the invention, reference is made in the description to the accompanying drawings where the device is illustrated. It is to be understood that the invention is not limited to the embodiment as hereinafter described and as illustrated. Referring to Figure 1. The device has outer tube (A) and an inner tube (B). The outer tube is short in length and it can be slides over the longer inner tube to occlude the side slot (E). When tube is in trachea for using it as an indolracheal tube. The inner tube has a small oesophageal cuff (C). The outer tube has a large pharyngeal cuff (D). There is an internal cuff (E) which is inilated to obliterate the inner tube to prevent the air entry into the stomach. The inner tube has 8 side slots or ventilating eyes (F) for ventilation when the lube is in esophagus. It has 3 pilot balloon one for each cuff-pilot balloon's' for esophageal cuff, Pilot balloon (H). For pharyngeal cuff and pilot balloon (1) for inner cuff. It has a black mark (J) for giving idea about the depth of insertion. It has an universal connector (K) by which the device can be connected to circuit or AMBU bag for ventilation. Referring to Fig. 2 which shows cross-sectional view oi' Airway showing oesophagus (k) and trachea (L), pharynx (M), soft palate (N), tongue (O). Referring to Figure 3 which shows the method of insertion of device after administration of anaesthetic agent (for unconscious patient, no need to give anaesthetic agent) mouth is opened with non-dominant hand with chin lift and device is inserted blindly with the dominant hand in the mouth. Depth of insertion is guided from the measurement from pharangeal depth of insertion is guided from the measurement from the angle of mouth to tragus. Measurement is taken from pharyngeal cuff towards connector end. Blind insertion results in high probability of oesophageal placement as in Figure 5 or tracheal placement as in Figure 4. When the proximal tip is in trachea the distal cuff (C) is inflated to use the device for ventilation as endotracheal tube. In this situation to prevent the leak from side slots (F), the outer tube (E) is slided downwards. In Figure 5, the distal end of the device is in oesophagus in this case the distal cuff (C) is inflated with 10-15 ml of air to prevent peritubal leak and oesophageal regurgitation, the obturator balloon (E) is inflated to occlude the lesion of the tube to prevent the air intra to stomach. The proximal cuff(D) is inflated with 80-100 ml of air to prevent the escaping of gases through the mouth and nose, so gases go into the laryngeal inlet. The device has following advantages: • The technique of insertion is easy, so can be used successfully in emerging situations and also where personnel trained in endotracheal intubation are not available. • It can be used in patients with difficult airway. • It can be used in patients with restrictive mouth opening. • It can be used by nasal route also. • It can be used in patients with cervical spine injury in which neck movement should be avoided. • It can be used in any position and during transportation. I Claim: 1. A supraglottic device for airway management comprising: Two tubes (A, B) one inside the other Two external cuffs (C, D) - one oesophageal and other pharyngeal One internal cuff (E) for obliterating the lumen of the internal tube at distal end. Three inflating balloon (G, H, I) one for each cuff. It has 8 side slits (F) for ventilation when tube is in oesophagus Universal connector (K) for connecting the device to breathing circuit or AMBU-bag. 2. A supraglottic device as claimed in Claim 1, wherein the said tubes can be slided over each other to occlude or open side slots. 3. A supraglottic device as substantially described herein before with reference to the accompanying drawings.

Full Text

This invention relates to supraglotic device for airway management particularly when it is not possible to ventilate or intubate or for ventilation where very high ventilatory press, is not required.
Various supraglottic devices have existed in prior art. Generally, the supraglottic devices are inserted through the mouth. For the maintenance of airway patency and administration of oxygen or anaesthetic gases through AMBU Bag or anaesthetic circuit. Prior existing devices cannot be used from nasal route if required to do so because of severe restriction of mouth. This device has been designed as an alternative to other supraglottic devices like combitube in which there are two parallel tube, whereas in this device, one tube is inside the other so the so the diameter of device of the tube is reduced due to which it can be used from nasal route also. Due to one tube inside the other there are less chances of kinking or obstruction of the tube due to biting. Object of invention
To develop a device which can be used in short statured patients and in children for securing airway as an alternative to combitube, another object of the invention is to develop a supraglottic device which can be used from nasal route as well. Statement of the invention
A supraglottic device for airway management comprising: Two tubes (A, B) one inside the other, Two external cuffs (C, D) - one oesophageal and other pharyngeal, One internal cuff (E) for obliterating the lumen of the internal tube at distal end, Three inflating balloon (G, H, I) one for each cuff. It has 8 side slits (F) for ventilation when tube is in oesophagus, Universal connector (K) for connecting the device to breathing circuit or AMBU-bag. Brief Description of accompanying drawings Fig.l is a perspective view of the device. Fig. 2 is a cross-sectional diagram of the human airway. Fig.3 shows the method of insertion of the device.
fig. 4 shows cross-section of airway with device in trachea
Fig. 5 shows cross-section of airway with proximal tip of device in oesophagus
Detailed Description of the Invention with reference to drawings
The following description refers to a preferred embodiment of the device. To facilitate an understanding of the invention, reference is made in the description to the accompanying drawings where the device is illustrated. It is to be understood that the invention is not limited to the embodiment as hereinafter described and as illustrated.
Referring to Figure 1. The device has outer tube (A) and an inner tube (B). The outer tube is short in length and it can be slides over the longer inner tube to occlude the side slot (E). When tube is in trachea for using it as an indolracheal tube. The inner tube has a small oesophageal cuff (C). The outer tube has a large pharyngeal cuff (D). There is an internal cuff (E) which is inilated to obliterate the inner tube to prevent the air entry into the stomach.
The inner tube has 8 side slots or ventilating eyes (F) for ventilation when the lube is in esophagus. It has 3 pilot balloon one for each cuff-pilot balloon's' for esophageal cuff, Pilot balloon (H). For pharyngeal cuff and pilot balloon (1) for inner cuff.
It has a black mark (J) for giving idea about the depth of insertion.
It has an universal connector (K) by which the device can be connected to circuit or AMBU bag for ventilation.
Referring to Fig. 2 which shows cross-sectional view oi' Airway showing oesophagus (k) and trachea (L), pharynx (M), soft palate (N), tongue (O).
Referring to Figure 3 which shows the method of insertion of device after administration of anaesthetic agent (for unconscious patient, no need to give anaesthetic agent) mouth is opened with non-dominant hand with chin lift
and device is inserted blindly with the dominant hand in the mouth. Depth of insertion is guided from the measurement from pharangeal depth of insertion is guided from the measurement from the angle of mouth to tragus. Measurement is taken from pharyngeal cuff towards connector end.
Blind insertion results in high probability of oesophageal placement as in Figure 5 or tracheal placement as in Figure 4. When the proximal tip is in trachea the distal cuff (C) is inflated to use the device for ventilation as endotracheal tube. In this situation to prevent the leak from side slots (F), the outer tube (E) is slided downwards.
In Figure 5, the distal end of the device is in oesophagus in this case the distal cuff (C) is inflated with 10-15 ml of air to prevent peritubal leak and oesophageal regurgitation, the obturator balloon (E) is inflated to occlude the lesion of the tube to prevent the air intra to stomach. The proximal cuff(D) is inflated with 80-100 ml of air to prevent the escaping of gases through the mouth and nose, so gases go into the laryngeal inlet.
The device has following advantages:
• The technique of insertion is easy, so can be used successfully in emerging situations and also where personnel trained in endotracheal intubation are not available.
• It can be used in patients with difficult airway.
• It can be used in patients with restrictive mouth opening.
• It can be used by nasal route also.
• It can be used in patients with cervical spine injury in which neck movement should be avoided.
• It can be used in any position and during transportation.

I Claim:
1. A supraglottic device for airway management comprising:
Two tubes (A, B) one inside the other
Two external cuffs (C, D) - one oesophageal and other pharyngeal
One internal cuff (E) for obliterating the lumen of the internal tube at
distal end.
Three inflating balloon (G, H, I) one for each cuff. It has 8 side slits
(F) for ventilation when tube is in oesophagus
Universal connector (K) for connecting the device to breathing
circuit or AMBU-bag.
2. A supraglottic device as claimed in Claim 1, wherein the said tubes can be slided over each other to occlude or open side slots.
3. A supraglottic device as substantially described herein before with reference to the accompanying drawings.

Documents:

2001-del-2004-abstract.pdf

2001-del-2004-claims.pdf

2001-del-2004-complete specification (granded).pdf

2001-del-2004-correspondence-others.pdf

2001-del-2004-correspondence-po.pdf

2001-del-2004-description (complete).pdf

2001-del-2004-drawings.pdf

2001-del-2004-form-1.pdf

2001-del-2004-form-13.pdf

2001-del-2004-form-19.pdf

2001-del-2004-form-2.pdf

2001-del-2004-form-3.pdf

2001-del-2004-form-5.pdf

2001-DEL-2004-Petition-137-(07-07-2011).pdf

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Patent Number

217924

Indian Patent Application Number

2001/DEL/2004

PG Journal Number

40/2008

Publication Date

03-Oct-2008

Grant Date

31-Mar-2008

Date of Filing

14-Oct-2004

Name of Patentee

ASHISH KUMAR KANNAUJIA

Applicant Address

SHRINAGAR COLONY, KHOOBPUR DIST SITAPUR U.P. 261001

Inventors:

#	Inventor's Name	Inventor's Address
1	ASHISH KUMAR KANNAUJIA	SHRINAGAR COLONY, KHOOBPUR DIST STTAPUR U.P. 261001

PCT International Classification Number

A62B 009/06

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA