GLOTTIS MASK AIRWAY

Abstract

Glottis Mask Airway (GMA)an aperture of larynx sealed airway for human ventilation includes a main airway; a non-inflatable cuff at the distal end of the main airway; the shape of the cuff is matched the shape of aperture of larynx perfectly. There is a sealing ring in the device to seal the intersection angle between the aperture of larynx and the wall of pharynx to prevent leakage during the ventilation. There is an epiglottis holder within the cuff where corresponding the epiglottis to prevent the epiglottis falls into the main airway cause the airway block. Plus there are 1) C-channel for gastric tube insertion; 2) at the proximal end of the main airway an openside airway is able to push ETT to the proper position at once; 3) a tongue base rest as the device stabilizer to stabilize the device in using.

Claims

1. A glottis mask airway (GMA), comprising: a main airway; and a non-inflatable, gel-like and bowl-shaped cuff which is rest on a cuff holder which is at a distal end of the main airway, wherein a shape of the cuff matches a shape of an anatomy structure of an aperture of a larynx, the cuff is above over the aperture of the larynx, a sealing ring surrounds an inner edge of the cuff which seals an intersection angle between the aperture of the larynx and a wall of a pharynx.

2. The GMA as claimed in claim 1, wherein the sealing ring is on a top of the inner edge of the cuff, the sealing ring fills into the intersection angle between the aperture of the larynx and the wall of the pharynx.

3. The GMA as claimed in claim 1, wherein an epiglottis holder is disposed within the cuff where correspond an epiglottis, the epiglottis rests on the epiglottis holder; the epiglottis remains in open all the time, the epiglottis is supported by the epiglottis holder so as to prevent the epiglottis folds towards a glottis by air flow to block the main airway.

4. The GMA as claimed in claim 1, wherein there is a C-channel formed on one side of the main airway goes along from a proximal end down to a back of the cuff holder, the C-channel is for a gastric tube insertion, and the C-channel is able to remain the gastric tube in place while the GMA is removed.

5. The GMA as claimed in claim 4, wherein a distal end of the C-channel at the back of the cuff holder, directly faces to an open of an esophagus.

6. The GMA as claimed in claim 1, wherein a tongue base rest which is a horizontal plane to hold a tongue base; the horizontal plane extends to both sides but not over a horizontal wide of the cuff, the tongue base rest is located at a proximal side of the cuff holder corresponding to the tongue base, and the tongue base rests on the plane, and the tongue base rest is a stabilizer of the glottis mask airway.

7. The GMA as claimed in claim 1, wherein an open side which starts at a proximal end of the main airway takes around of a length of the whole main airway on a side of the arc maim airway, the function of the open side is to push an endotracheal tube (ETT) to a position when you have to insert the ETT through the main airway.

8. The GMA as claimed in claim 7, wherein the open side is detached or locked by a locker device.

9. The GMA as claimed in claim 8, wherein a dovetail groove on each of sides of the open edges separately, and a dovetail tenon is provided on each of two sides of the locker device corresponding to the dovetail groove separately.

10. The GMA as claimed in claim 8, wherein the locker device is integrated with a connecter which connects to an anesthesia machine and a bite blocker.

11. The GMA as claimed in claim 9, wherein the locker device is integrated with a connecter which connects to an anesthesia machine and a bite blocker.

12. The GMA as claimed in claim 1, wherein a cross section of the main airway is square, and four corners of the square have smooth transitions.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0028] In the figures:

[0029] FIG. 1 is a schematic structural view of Embodiment 1 of the present invention.

[0030] FIG. 2 is a schematic view of the back of Embodiment 1 of the present invention.

[0031] FIG. 3 is a schematic structural view of Embodiment 2 of the present invention.

[0032] FIG. 4 is a schematic view of the separated open edge of the GMA in Embodiment 2 of the present invention.

[0033] FIG. 5 is a schematic view of the locking mechanism in Embodiment 2 of the present invention.

[0034] FIG. 6 is a schematic view of the contrasted position between the human larynx and the present invention.

[0035] FIG. 7 is a schematic view of the intersection angel between the aperture of larynx and pharynx wall.

DETAILED DESCRIPTION OF THE INVENTION

[0036] The present invention on the basis of study anatomy structure of pharynx, larynx from literature; standard text book; cadaveric model as well as clinical study. After the study we found the features of aperture of larynx:

[0037] (1) The location is fix and no evolution; the opening of larynx; under the wall of pharynx.

[0038] (2) The structure is fixed no evolution (as shown in FIG. 6, including the epiglottis 14, the aryepiglottic fold 15; inter arytenoid notch 16).

[0039] (3) The shape is fixed surrounded with the soft tissue.

[0040] (4). There is an intersection angle between the aperture of larynx and pharynx wall 17.

[0041] On the basis of the features of aperture of larynx the present invention designed a cuff 2 which is match the shape of aperture of larynx; design a sealing ring 6 on the top of the inner edge of the cuff 2; the sealing ring 6 goes into the intersection angel between the aperture of larynx and pharynx wall 17 as well as sealed the intersection angle. The cuff 2 of the device is made of a soft material which is as soft as the larynx and pharynx tissue. It's a bowl shape, no inflatable, gel like cuff. The present invention above over the aperture of larynx and the distal open of the airway toward the glottis directly, named it the glottis mask airway (GMA) for short.

[0042] The following two embodiments are given for the specific application of the present invention.

Embodiment 1 (Without Open Side)

[0043] As shown in FIGS. 1 and 2, the present invention provides a glottis mask airway which includes a main airway 1 and a non-inflatable, gel-like and bowl-shaped cuff 2 which is rest on a cuff holder 3 which is at the distal end of the main airway 1. The shape of the cuff 2 matches the shape of anatomy structure of the aperture of larynx perfectly. The cuff 2 is above over the aperture of larynx.

[0044] FIG. 6 is a schematic view of the anatomy landmark correspond to the cuff structure. As shown in FIG. 6, the shape of the cuff 2 matches the shape of anatomy structure of the aperture of larynx perfectly, and the cuff 2 is above over the aperture of larynx.

[0045] The present invention designs a sealing ring 6 on the top of the inner edge of the cuff 2, and the sealing ring 6 goes into the intersection angel between the aperture of larynx and pharynx wall 17 as well as sealed the intersection angle. FIG. 7 is a schematic view of the intersection angel between the aperture of larynx and pharynx wall 17.

[0046] The present invention: there is an epiglottis holder 7 within the cuff 2 where corresponding the epiglottis. The epiglottis rests on it, keeps the glottis open, prevent the glottis from falling down to the airway by air flow cause the airway block.

[0047] The present invention: a C-channel 9 (for gastric tube insertion) which is on the one side of the main airway 1 goes along from the proximal end down to the back of cuff holder 3. The C-channel 9 is for the gastric tube insertion. The C-Channel 9 is able to remain the gastric tube in place while the GMA is removed. The distal end of C-channel 9 is at the back of the cuff holder 3, faces direct to the open of the esophagus. The distal end of C-channel 9 at the back of the cuff holder 3 is able to prevent the gastric tube from being blocked by main tracheal when insert the gastric tube.

[0048] The present invention: there is a tongue base rest 8 which is a horizontal plane to hold a tongue base 13. The plane extending to both sides but not over the horizontal wide of the cuff, and it's located at the proximal side of cuff holder 3 corresponding to the tongue base. The tongue base 13 rests on the plane. The tongue base rest 8 is the stabilizer of the device.

[0049] The present invention: the cross section of the main airway 1 is square, four corners of the airway with a smooth transition.

[0050] The following problems are solved within Embodiment 1: (1) the leakage of the airway; (2) the post operation throat pain and other complications caused by the compression of the surrounding tissue, nerves caused by the inflatable cuff; (3) the hurt of the isthmus of fauces caused by the rigid material LMA; (4) the risk of the airway block caused by the epiglottis falls into the airway during the ventilation; (5) the stability of the device in use; (6) the problem of keep the gastric tube when take out the device; the present invention has improved/solved the problems above completely or partially, provide an easy to use; safety; and no hurt to patient; non-inflatable Laryngeal Mask Airway.

Embodiment 2 (With Side Open)

[0051] As shown in FIGS. 3, 4 and 5, the present invention provides a glottis mask airway which includes a main airway 1 and a non-inflatable, gel-like and bowl-shaped cuff 2 which is rest on a cuff holder 3 which is at the distal end of the main airway 1. The shape of the cuff 2 matches the shape of anatomy structure of the aperture of larynx perfectly. The cuff 2 above over the aperture of larynx. There is an open side 4 at the - proximal end of the main airway 1.

[0052] FIG. 6 is a schematic view of the anatomy landmark correspond to the cuff structure. As shown in FIG. 6, the shape of the cuff 2 matches the shape of anatomy structure of the aperture of larynx perfectly, and the cuff 2 is above over the aperture of larynx.

[0053] There is an open side 4 (shown in FIG. 4) which starts at the proximal end of the device takes - of the length of the whole device on the other side other side of the maim airway 1. The function of the open side 4 to push the ETT to the proper position when you have to insert ETT through the device.

[0054] The open side 4 is detached or locked by a locker device 5.

[0055] There is a dovetail groove 11 on each of sides of the open edges separately, and a dovetail tenon 12 is provided on each of two sides of the locker device corresponding to the dovetail groove 11 separately.

[0056] The locker device is integrated with the connecter which connects to anesthesia machine and the bite blocker 10.

[0057] Except side open Embodiment 1 is exact same to Embodiment 2

[0058] The present invention designed a sealing ring 6 on the top of the inner edge of the cuff 2; the sealing ring 6 goes into the intersection angel between the aperture of larynx and pharynx wall 17 as well as sealed the intersection angle. FIG. 7 is a schematic view of the intersection angel between the aperture of larynx and pharynx wall.

[0059] The present invention: there is an epiglottis holder 7 within the cuff 2 where corresponds the epiglottis. The epiglottis rests on it, keeps the glottis open; prevent the glottis falls down to the airway by air flow cause the airway block.

[0060] The present invention: there is a C-channel 9 (for gastric tube insertion) on the one side of the main airway 1 goes along from the proximal end down to the back of cuff holder 3. The C-channel 9 is for the gastric tube insertion. The C-Channel 9 is able to remain the gastric tube in place while the GMA is removed. The distal end of the C-channel 9 at the back of the cuff holder 3, facing direct to the open of the esophagus. The distal end of the C-channel 9 at the back of the cuff holder 3 is able to prevent the gastric tube from being blocked by main tracheal when insert the gastric tube.

[0061] The present invention: there is a tongue base rest 8 which a horizontal plane to hold the tongue base. The plane extending to both sides but not over the horizontal wide of the cuff, it's located at the proximal side of cuff holder 3 corresponding to the tongue base; tongue base 13 rest on the plane, and it's the stabilizer of the device.

[0062] The present invention: the cross section of the main airway 1 is square, four corners of the airway have smooth transitions.

[0063] The following problems are solved within Embodiment 1: (1) the leakage of the airway; (2) the post operation throat pain and other complications caused by the compression of the surrounding tissue nerves caused by the inflatable cuff; (3) the hurt of the isthmus of fauces caused by the rigid material LMA; (4) the risk of the airway block caused by the epiglottis falls into the airway during the ventilation; (5) the stability of the device in use; (6) the problem of keep the gastric tube when take out the device; (7) insert ETT through the device has to use a pushing rod to push the ETT to the proper position. The present invention has improved/solved the problems above completely or partially, provide an easy to use; safety; and no hurt to patient; non-inflatable Laryngeal Mask Airway.

[0064] The basic principle, main characteristics, implementation and other information of the present invention have been described above. However, the present invention is not limited to the foregoing process of implementation; various changes and modifications may be made to the present invention without departing from the spirit and scope of the invention. Therefore, any changes and modifications without departing from the scope of the present invention shall be construed as being included therein.