LARYNGEAL MASK AIRWAY DEVICE

Abstract

A laryngeal mask airway device includes a flexible tube set and an annular mask. The flexible tube set has an airway tube and an air guide tube that are juxtaposed. The annular mask has an outer membrane surrounding an outer periphery of one end of the airway tube and an elastic filler disposed inside the outer membrane. The outer membrane is in communication with one end of the air guide tube. When in use, the outer membrane is first squeezed to compress the elastic filler, and then the other end of the air guide tube is closed. The inside of the outer membrane forms a negative pressure to maintain the elastic filler in a small volume, so that one end having the annular mask of the flexible tube set can be placed and positioned in a patient's throat.

Claims

1. A laryngeal mask airway device, comprising: a flexible tube set, having an airway tube and an air guide tube that are juxtaposed; an annular mask, having an outer membrane surrounding an outer periphery of one end of the airway tube and an elastic filler disposed inside the outer membrane, the outer membrane being in communication with one end of the air guide tube, another end of the air guide tube being openable and closable, wherein the outer membrane can be inflated and supported by the elastic filler in a natural state, so that the annular mask provides an outward elastic supporting force greater than the annular mask itself.

2. The laryngeal mask airway device as claimed in claim 1, wherein the elastic filler is made of a foam material.

3. The laryngeal mask airway device as claimed in claim 1, wherein the elastic filler is a composite material layer that is formed inside the outer membrane and has an outward elastic tension.

4. The laryngeal mask airway device as claimed in claim 1, wherein the elastic filler is an elastic thin layer having an outward supporting force against an inner surface of the outer membrane.

5. The laryngeal mask airway device as claimed in claim 1, wherein an intake and exhaust assembly is disposed at the end of the air guide tube away from the outer membrane, the intake and exhaust assembly includes an exhaust valve, an intake valve and a plug, the exhaust valve has a unidirectional air outlet, the intake valve has a unidirectional air inlet, and the plug is configured to close the air inlet.

6. The laryngeal mask airway device as claimed in claim 2, wherein an intake and exhaust assembly is disposed at the end of the air guide tube away from the outer membrane, the intake and exhaust assembly includes an exhaust valve, an intake valve and a plug, the exhaust valve has a unidirectional air outlet, the intake valve has a unidirectional air inlet, and the plug is configured to close the air inlet.

7. The laryngeal mask airway device as claimed in claim 3, wherein an intake and exhaust assembly is disposed at the end of the air guide tube away from the outer membrane, the intake and exhaust assembly includes an exhaust valve, an intake valve and a plug, the exhaust valve has a unidirectional air outlet, the intake valve has a unidirectional air inlet, and the plug is configured to close the air inlet.

8. The laryngeal mask airway device as claimed in claim 4, wherein an intake and exhaust assembly is disposed at the end of the air guide tube away from the outer membrane, the intake and exhaust assembly includes an exhaust valve, an intake valve and a plug, the exhaust valve has a unidirectional air outlet, the intake valve has a unidirectional air inlet, and the plug is configured to close the air inlet.

9. The laryngeal mask airway device as claimed in claim 1, wherein one end of the flexible tube set, away from the annular mask, is transversely provided with an end plate, one side of the end plate, close to the air guide tube, is recessed with a clamping groove, when the air guide tube is embedded in the clamping groove, the air guide tube is pressed to form a closed state.

10. The laryngeal mask airway device as claimed in claim 2, wherein one end of the flexible tube set, away from the annular mask, is transversely provided with an end plate, one side of the end plate, close to the air guide tube, is recessed with a clamping groove, when the air guide tube is embedded in the clamping groove, the air guide tube is pressed to form a closed state.

11. The laryngeal mask airway device as claimed in claim 3, wherein one end of the flexible tube set, away from the annular mask, is transversely provided with an end plate, one side of the end plate, close to the air guide tube, is recessed with a clamping groove, when the air guide tube is embedded in the clamping groove, the air guide tube is pressed to form a closed state.

12. The laryngeal mask airway device as claimed in claim 4, wherein one end of the flexible tube set, away from the annular mask, is transversely provided with an end plate, one side of the end plate, close to the air guide tube, is recessed with a clamping groove, when the air guide tube is embedded in the clamping groove, the air guide tube is pressed to form a closed state.

13. The laryngeal mask airway device as claimed in claim 5, wherein one end of the flexible tube set, away from the annular mask, is transversely provided with an end plate, one side of the end plate, close to the air guide tube, is recessed with a clamping groove, when the air guide tube is embedded in the clamping groove, the air guide tube is pressed to form a closed state.

14. The laryngeal mask airway device as claimed in claim 6, wherein one end of the flexible tube set, away from the annular mask, is transversely provided with an end plate, one side of the end plate, close to the air guide tube, is recessed with a clamping groove, when the air guide tube is embedded in the clamping groove, the air guide tube is pressed to form a closed state.

15. The laryngeal mask airway device as claimed in claim 7, wherein one end of the flexible tube set, away from the annular mask, is transversely provided with an end plate, one side of the end plate, close to the air guide tube, is recessed with a clamping groove, when the air guide tube is embedded in the clamping groove, the air guide tube is pressed to form a closed state.

16. The laryngeal mask airway device as claimed in claim 8, wherein one end of the flexible tube set, away from the annular mask, is transversely provided with an end plate, one side of the end plate, close to the air guide tube, is recessed with a clamping groove, when the air guide tube is embedded in the clamping groove, the air guide tube is pressed to form a closed state.

17. The laryngeal mask airway device as claimed in claim 9, wherein the clamping groove is provided with a clamping recess close to an edge of the end plate for holding the air guide tube so that the air guide tube can be kept and positioned in the clamping recess.

18. The laryngeal mask airway device as claimed in claim 10, wherein the clamping groove is provided with a clamping recess close to an edge of the end plate for holding the air guide tube so that the air guide tube can be kept and positioned in the clamping recess.

19. The laryngeal mask airway device as claimed in claim 11, wherein the clamping groove is provided with a clamping recess close to an edge of the end plate for holding the air guide tube so that the air guide tube can be kept and positioned in the clamping recess.

20. The laryngeal mask airway device as claimed in claim 12, wherein the clamping groove is provided with a clamping recess close to an edge of the end plate for holding the air guide tube so that the air guide tube can be kept and positioned in the clamping recess.

21. The laryngeal mask airway device as claimed in claim 13, wherein the clamping groove is provided with a clamping recess close to an edge of the end plate for holding the air guide tube so that the air guide tube can be kept and positioned in the clamping recess.

22. The laryngeal mask airway device as claimed in claim 14, wherein the clamping groove is provided with a clamping recess close to an edge of the end plate for holding the air guide tube so that the air guide tube can be kept and positioned in the clamping recess.

23. The laryngeal mask airway device as claimed in claim 15, wherein the clamping groove is provided with a clamping recess close to an edge of the end plate for holding the air guide tube so that the air guide tube can be kept and positioned in the clamping recess.

24. The laryngeal mask airway device as claimed in claim 16, wherein the clamping groove is provided with a clamping recess close to an edge of the end plate for holding the air guide tube so that the air guide tube can be kept and positioned in the clamping recess.

25. The laryngeal mask airway device as claimed in claim 1, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

26. The laryngeal mask airway device as claimed in claim 2, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

27. The laryngeal mask airway device as claimed in claim 3, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

28. The laryngeal mask airway device as claimed in claim 4, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

29. The laryngeal mask airway device as claimed in claim 5, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

30. The laryngeal mask airway device as claimed in claim 6, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

31. The laryngeal mask airway device as claimed in claim 7, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

32. The laryngeal mask airway device as claimed in claim 8, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

33. The laryngeal mask airway device as claimed in claim 9, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

34. The laryngeal mask airway device as claimed in claim 10, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

35. The laryngeal mask airway device as claimed in claim 11, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

36. The laryngeal mask airway device as claimed in claim 12, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

37. The laryngeal mask airway device as claimed in claim 13, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

38. The laryngeal mask airway device as claimed in claim 14, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

39. The laryngeal mask airway device as claimed in claim 15, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

40. The laryngeal mask airway device as claimed in claim 16, wherein the flexible tube set further includes an extraction tube, and one end of the extraction tube is formed with a front opening on a surface of the outer membrane, and the extraction tube and at least a part of the air guide tube are integrally formed at two sides of the airway tube.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG. 1 is a perspective view of the present invention;

[0020] FIG. 2 is a schematic view showing the operation that the annular mask of the present invention is compressed to reduce its volume;

[0021] FIG. 3 is a schematic view showing a state in which the annular mask of the present invention is kept small;

[0022] FIG. 4 is a schematic view showing the operation that the annular mask of the present invention is returned to its original shape from a compressed state;

[0023] FIG. 5 is a schematic view showing a state in which the laryngeal mask airway device of the present invention is positioned in the throat;

[0024] FIG. 6 is a schematic view showing a state in which the air guide tube is held and positioned by the end plate in accordance with a first embodiment of the present invention;

[0025] FIG. 7 is a schematic view showing a state in which the air guide tube is held and closed by the end plate in accordance with the first embodiment of the present invention; and

[0026] FIG. 8 is a schematic view showing a state in which the air guide tube is held and closed by the end plate in accordance with a second embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Referring to FIG. 1 and FIG. 2, the present invention mainly comprises a flexible tube set 1 and an annular mask 2. The flexible tube set 1 includes an airway tube 11 and an air guide tube 12 that are juxtaposed. The airway tube 11 has two ends defined as a first opening 111 and a second opening 112.

[0028] The annular mask 2 has an outer membrane 21 surrounding the outer periphery of the second opening 112 of the airway tube 11 and an elastic filler 22 disposed inside the outer membrane 21. The inside of the outer membrane 21 is in communication with one end of the air guide tube 12, and another end of the air guide tube 12 is openable and closable.

[0029] An intake and exhaust assembly 3 is disposed at one end of the air guide tube 12 away from the outer membrane 21 as one mechanism that the end can be closed or opened. The intake and exhaust assembly 3 includes an exhaust valve 31, a plug 32, and an intake valve 33. The exhaust valve 31 has a unidirectional air outlet 311. The intake valve 33 has a unidirectional air inlet 331. The plug 32 is configured to close the air inlet 331.

[0030] In this embodiment, the elastic filler 22 is made of a foam material. The elastic filler 22 can be compressed into a smaller volume when subjected to an external pressure. When the elastic filler 22 is in a natural state, it can support the outer membrane 21 uniformly to be fully inflated.

[0031] In a feasible embodiment, the flexible tube set 1 further includes an extraction tube 13. One end of the extraction tube 3 is formed with a front opening 131 on the surface of the outer membrane 21 for extracting the liquid of the esophagus and the stomach. The extraction tube 13 and a part of the air guide tube 12 are integrally formed at two sides of the airway tube 11 to form a simple integrated structure.

[0032] As shown in FIG. 3 to FIG. 5, when in use, in a state that the plug 32 closes the air inlet 331, the outer membrane 21 is first squeezed to compress the elastic filler 22 to reduce its volume, and the air in the outer membrane 21 can be exhausted from the air outlet 311 of the exhaust valve 31 via the air guide tube 12 (as shown in FIG. 2). Since the outside air cannot be introduced into the outer membrane 21 via the air inlet 331, a negative pressure is formed inside the outer membrane 21, and the elastic filler 22 can be kept in a compressed state to reduce its volume (as shown in FIG. 3), so that one end having the annular mask 2 of the airway tube 11 can be placed into the patient's throat T easily. When the annular mask 2 is placed and positioned inside the throat T, the plug 32 is removed from the air inlet 331 so that the external air is introduced unidirectionally through the air inlet 331 and enters the outer membrane 21 through the air guide tube 12 (as shown in FIG. 4) to balance the air pressure inside and outside the outer membrane 21. At this time, the elastic filler 22 is naturally inflated because of not being applied with a force. In addition to supporting the outer membrane 21 (the annular mask 2) to return to the original size and shape, the elastic filler 22 provides a soft pressing force from the inside of the outer membrane 21 toward the outside of the outer membrane 21, assisting the outer membrane 21 to generate re-inflation slightly greater than that in a natural state, so that the outer surface of the outer membrane 21 is more closely pressed against the inner wall of the esophageal opening, and the annular mask 2 covers the esophagus effectively and keeps the airway open (as shown in FIG. 5).

[0033] In the above structure of the present invention, since the elastic filler 22 is made of a foam material or other soft material, after being fully inflated, the elastic filler 22 allows the annular mask 2 to attach to the inner wall of the esophageal opening than the natural inflation of the outer membrane 21 itself, while still maintaining proper softness and elasticity. In this way, the undesired discomfort of the patient's throat T caused by excessively increasing the internal air pressure of the annular mask 2 can be alleviated effectively.

[0034] In the actual application, the elastic filler 22 may be a composite material layer that is formed inside the outer membrane 21 and has an outward elastic tension. The elastic filler 22 may also be an elastic thin layer having an outward supporting force against the inner surface of the outer membrane 21 from the inside to the outside. Both can achieve the effects of reducing the volume when the outer membrane 21 is compressed, and assisting the outer membrane 21 in generating inflation slightly greater than that in a natural state after being released, and forming elastic support.

[0035] Referring to FIG. 6 and FIG. 7, in the actual application, one end of the flexible tube set 1, away from the annular mask 2, may be transversely provided with an end plate 14 as needed. One side of the end plate 14, close to the air guide tube 12, is recessed with a clamping groove 142. The clamping groove 142 is provided with a clamping recess 141 close to the edge of the end plate 14. The air guide tube 12 is hold by the clamping recess 141, so that the air guide tube 12 can be kept and positioned in the clamping recess 141. When the air guide tube 12 is further embedded in the clamping groove 142, the wall of the middle portion of the air guide tube 12 is pressed to form a fit, thereby closing the air guide tube 12.

[0036] As shown in FIG. 8, in another feasible embodiment, one end of the flexible tube set 1, away from the annular mask 2, may be transversely provided with an end plate 15 as needed. One side of the end plate 15, close to the air guide tube 12, is recessed with a clamping groove 151. When the air guide tube 12 is embedded in the clamping groove 151, the wall of the middle portion of the air guide tube 12 is pressed to form a fit. Compared with the above-mentioned end plate 14, although the end plate 15 does not have a structure similar to the clamping recess 141, the effect of closing the air guide tube 12 can be achieved.

[0037] In summary, the improved laryngeal mask airway device of the present invention can achieve easy operation, proper soft and hard support after being inflated, and can have an excellent sealing effect and reduce patient discomfort. Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims.