TWI835475B - Laryngeal mask airway - Google Patents

Abstract

A laryngeal mask airway has a gas filled portion and a tube portion. The gas filled portion has an opening portion and an enclosed portion. The opening portion touches an upper airway of a human body and the tube portion connects with the enclosed portion. The laryngeal mask airway is characterized in that the tube portion has an accommodated concave space formed by a first side surface and two protrusions.

Description

laryngeal mask

The present invention relates to a laryngeal mask, in particular to a laryngeal mask provided with two protrusions on the tube body to form a U-shaped accommodation space so that when the laryngeal mask is placed on the human throat for use, the accommodation space can match the convex shape of the cervical vertebrae, thereby preventing The laryngeal mask body slides on the open end of the upper respiratory tract.

The laryngeal mask in the known art is a tube body with one end connected to the mask body. As shown in Figure 1, when the laryngeal mask 700 in the prior art is put into the human larynx and the mask body covers the tracheal opening, the tube body of the laryngeal mask in the prior art is 710 is a round tube body, so when the prior art laryngeal mask tube body 710 cannot be fixed directly in front of the convex surface 921 of the cervical vertebra 92, the prior art laryngeal mask tube body 710 will slip, causing the prior art laryngeal mask tube 700 to deform and unable to stabilize the mask. There is a problem of closing the tracheal opening, so there is a need for improvement.

The main purpose of the present invention is to provide a tube body with two protrusions to form a U-shaped accommodation space so that when the laryngeal mask is placed on the human body's throat, the accommodation space can match the round and convex shape of the cervical vertebrae to avoid laryngeal obstruction. The laryngeal mask is a laryngeal mask that slides on the open end of the upper respiratory tract.

In order to achieve the above purpose, the laryngeal mask of the present invention includes a laryngeal mask body and a tube body, wherein the laryngeal mask body includes an opening part and a closing part, the opening part contacts the upper respiratory tract opening of the human body, and the tube body is connected to the closing part, and is characterized in that: the tube The body includes a first side, and the first side has two protrusions, and the two protrusions and the first side form an accommodation space.

By disposing the laryngeal mask of the present invention on the tube body and designing two protrusions close to the cover body, a U-shaped groove is formed between the first side of the tube body and the two protrusions, which can match the protrusions of the human cervical vertebrae. This allows the mask body to be stably placed at the opening of the human trachea to solve the problem in the prior art that the rounded tube body contacts the convex part of the human throat formed by the cervical vertebrae, causing the laryngeal mask to remain in place due to the rounded tube The body cannot be fixed on the aforementioned protruding parts and slips off, causing the laryngeal mask body of the prior art to shift, causing the laryngeal mask body to be deformed and unable to stably cover the tracheal opening.

In order to better understand the technical content of the present invention, preferred specific embodiments are described below. Please refer to Figures 2 to 5 below for a perspective view of an embodiment of the laryngeal mask of the present invention, a partial enlarged view of an embodiment of the laryngeal mask, a schematic cross-sectional view of an embodiment of the laryngeal mask being inserted into the human body's larynx and along the edges. A schematic cross-sectional view of line segment A' in Figure 4.

As shown in Figures 2 to 5, in this embodiment, the laryngeal mask 1 of the present invention is used to be placed on the larynx and includes a laryngeal mask body 10 and a tube body 20. The laryngeal mask body 10 includes an opening part 11 and a closing part 12 , as shown in Figure 4, when the laryngeal mask 1 of the present invention is inserted into the larynx, the opening 11 covers the upper respiratory tract opening 91, and the tube body 20 and the closing portion 12 are located on a side close to the cervical vertebra 92. In this implementation, the laryngeal mask body 10 is an inflatable airbag, but the invention is not limited thereto. The laryngeal mask body 10 can also be made of solid soft rubber (such as thermoplastic elastomer (TPE)).

As shown in Figures 2 to 5, in this embodiment, the tube body 20 is connected to the closing part 12. The laryngeal mask 1 of the present invention is characterized in that the tube body 20 includes a first side 21 and the first side 21 has two protrusions. 211, whereby the two protruding parts 211 and the first side 21 of the tube body 20 form a U-shaped accommodation space 30, the two protruding parts 211 and the U-shaped accommodation space 30 are close to the closing part 12, and both are elongated, and The extension axis direction of the long strip is the same as the axis G direction of the tube body. As shown in Figure 3, the distance Q between the vertices 212 of the two protruding parts 211 (that is, the width of the U-shaped accommodation space 30) is less than or equal to the tube body. According to the outer diameter of the body 20, the length L of the two protrusions 211 accounts for approximately one quarter to three quarters of the length L' of the tube body above the laryngeal mask body 10. It should be noted here that, as shown in Figure 2, the length L' of the tube body above the laryngeal mask body 10 extends vertically from the edge of the closing part 12 below the tube body 20 to the intersection with the tube body 20 to the combination of the tube body 20 and the closing part 12. The horizontal distance or tangential distance (because the pipe body 20 is actually a curve) is the range marked by the length L' in Figure 2. As shown in Figure 5, when the laryngeal mask 1 of the present invention is placed on the human throat, the two protrusions 211 will be located on both sides of the convex surface 921 of the throat cervical vertebra 92, so that the convex surface 921 of the throat cervical vertebra 92 is located The U-shaped placement space 30 , that is to say, the U-shaped placement space 30 can match the round and convex shape of the cervical vertebra 92 , and the two vertices 212 contact the human body on both sides of the throat cervical vertebra 92 , thereby achieving the effect of limiting the position of the laryngeal mask 10 , allowing The laryngeal mask body 10 of the laryngeal mask 1 of the present invention can be stably placed on the convex surface 921 of the cervical vertebra 92 without slipping, so that the opening 11 can stably cover the upper respiratory tract opening 91, which solves the problem of the larynx in the prior art. The convex surface 921 of the mask tube body 710 on the cervical vertebra 92 of the throat easily slips, causing the mask body to shift and deform, and cannot cover the tracheal opening, causing the problem that oxygen cannot stably enter the human lungs.

It should be noted that the above-mentioned embodiments are only examples for convenience of explanation, and the scope of rights claimed by the present invention should be subject to the scope of the patent application and is not limited to the above-mentioned embodiments.

1:Laryngeal mask 10:Laryngeal mask body 11:Opening part 12: Closed part 20:tube body 21:First side 211:Protrusion 90:Human body 91: Upper respiratory tract opening L, L’: length 92:Cervical vertebra G: Axis 30: U-shaped location space 921: convex surface 212: vertex Q:Distance 700: Prior Art Laryngeal Mask 710: Prior Art Laryngeal Mask Tube Body

Figure 1 is a schematic cross-sectional view of a prior art laryngeal mask being inserted into the human body's larynx. Figure 2 is a perspective view of one embodiment of the laryngeal mask of the present invention. Figure 3 is a partial enlarged view of one embodiment of the laryngeal mask of the present invention. Figure 4 is a schematic cross-sectional view of an embodiment of the laryngeal mask of the present invention being inserted into the human body's larynx. Figure 5 is a schematic cross-sectional view along line A' of Figure 4.

1:Laryngeal mask

10:Laryngeal mask body

11:Opening part

12: Closed part

20:tube body

21:First side

211:Protrusion

90:Human body

91: Upper respiratory tract opening

92:Cervical vertebra

30: U-shaped location space

L, L’: length

G: Axis

Claims (7)

A laryngeal mask, applied to a human throat, the human larynx includes a cervical vertebra, a laryngeal mask body and a tube body, wherein the laryngeal mask body includes an opening and a closing part, wherein the opening contacts a human body An upper respiratory tract opening, the tube body is connected to the closed part, characterized in that: the tube body includes a first side and the first side has two protrusions, and the two protrusions and the first side form a U shape. The two protrusions each have a vertex protruding outward from the first side; when the laryngeal mask is placed on the human body's throat, the U-shaped placement space matches the shape of the cervical vertebra, and the two protrusions The apex of the head contacts the human body on both sides of the cervical vertebrae. The laryngeal mask of claim 1, wherein the U-shaped storage space is close to the closing part. The laryngeal mask of claim 2, wherein the first side is a surface of the tube body close to the upper respiratory tract opening and close to a cervical vertebra. In the laryngeal mask described in claim 3, the U-shaped storage space is in a long strip shape. The laryngeal mask of claim 4, wherein the extending axis direction of the strip is the same as the axis direction of the tube body. The laryngeal mask of claim 5, wherein the distance between the vertices of the two protrusions is less than or equal to the outer diameter of the tube body. The laryngeal mask of claim 6, wherein the length of the two protrusions accounts for approximately one quarter to three quarters of the length L of the tube body above the laryngeal mask body.

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