WO2018012764A1

WO2018012764A1 - Oral or nasal endotracheal intubation tube having a silicon block

Info

Publication number: WO2018012764A1
Application number: PCT/KR2017/006870
Authority: WO
Inventors: Su-Hyun Lee; Young-Jun Oh
Original assignee: Industry-Academic Cooperation Foundation, Yonsei University
Priority date: 2016-07-14
Filing date: 2017-06-29
Publication date: 2018-01-18

Abstract

An oral or nasal endotracheal intubation tube includes a tube part and a block unit. The tube part extends along a direction with a tube shape. The block unit includes a first block portion having a first radius and a second block portion having a second radius shorter than the first radius. The block unit guides the tube part into trachea when the tube part is inserted into an oral or nasal cavity.

Description

ORAL OR NASAL ENDOTRACHEAL INTUBATION TUBE HAVING A SILICON BLOCK

The present disclosure of invention relates to an oral or nasal endotracheal intubation tube, and more specifically the present disclosure of invention relates to an oral or nasal endotracheal intubation tube having a hemi-spherical or an elliptical shaped silicon block used for intubation through an oral cavity or a nasal cavity and guiding the endotracheal intubation tube into a trachea more exactly.

In the intubation, an oral intubation in which an endotracheal intubation tube is intubated through an oral cavity is normally used, and for example, the intubation procedure using a laryngoscope, the procedure using a laryngeal mask airway and so on has been used.

However, when the oral or nasal intubation is hard to be performed in cases that cervical vertebrae of the patient is damaged, an oral cavity is closed due to temporomandibular joint spasticity, an injury or hemorrhage of the oral cavity occurs, tongue edema occurs and so on, a blind endotracheal intubation should be performed.

In case of the blind endotracheal intubation, as illustrated in FIG. 1 for the oral intubation or in FIG. 2 for the nasal intubation, an end portion 15 of a tube 11 is normally intubated into esophagus 3 not into trachea 2, and thus the intubation may be often failed.

The present invention is developed to solve the above-mentioned problems of the related arts. The present invention provides an oral or nasal endotracheal intubation tube capable of guiding a tube into trachea to increase accuracy and probability of the intubation and to minimize an injury of the patient in case of the blind endotracheal intubation.

According to an example embodiment, an oral or nasal endotracheal intubation tube includes a tube part and a block unit. The tube part extends along a direction with a tube shape. The block unit includes a first block portion having a first radius and a second block portion having a second radius shorter than the first radius. The block unit guides the tube part into trachea when the tube part is inserted into an oral or nasal cavity.

In an example embodiment, the oral or nasal endotracheal intubation tube may further include a balloon extending with passing through the tube part, disposed in front of the block unit to be connected to an end portion of the tube part, and expanding or contracting a cuff uniformly expanded around the tube part.

In an example embodiment, the first block portion may be positioned adjacent to the cuff closer than the second block portion.

In an example embodiment, the cuff may be expanded to block the trachea with the tube part being intubated to the trachea.

In an example embodiment, the first block portion may make contact with a rear side of pharynx to guide an end portion of the tube part into the trachea, when the tube part is inserted through the oral or nasal cavity.

In an example embodiment, the first block portion may block the trachea with the tube part intubated into the trachea.

In an example embodiment, the first and second block portions may be protruded from a rear side of the tube part.

In an example embodiment, each of the first and second block portions may have a hemi-spherical shape or an elliptical shape when protruded from the rear side of the tube part.

In an example embodiment, the block unit may include a silicon material.

According to the present example embodiments, the block unit fixed at a rear portion of the cuff is additionally formed, and guides the intubation tube inserted through the oral or nasal cavity toward the trachea, so that the endotracheal intubation may be more correctly in case of the blind endotracheal intubation.

Alternatively, the cuff is omitted in the intubation tube, and the only the block unit may guide the intubation tube inserted through the oral or nasal cavity, so that the endotracheal intubation may be more correctly and the intubation tube may be manufactured more easily and simply.

Here, the block unit makes contact with the pharynx and guides the tube part a front side of the pharynx. Thus, when the patient lies on the bed, the tube part is guided toward the trachea disposed in front of the esophagus.

The cross-sectional shape of the block unit is a circular or elliptical shape, and the block unit is protruded to cover only a rear portion of the tube part, so that the tube part may be guided toward the trachea disposed at a front side of the pharynx more correctly.

In addition, the first radius of the first block portion is larger than the second radius of the second block portion, and thus a whole shape of the block unit is profit to the shape of the rear side of the pharynx. In the oral or nasal endotracheal intubation, the patient may be more comfortable and the tube part may be intubated more easily.

Further, after the block unit guides the tube part into the trachea, the first block portion makes contact with the trachea and blocks the trachea, and thus additional cuffs or balloons for blocking the trachea may be omitted. Thus, the intubation may be easily and efficiently performed.

FIG. 1 is an anatomical diagram illustrating a conventional oral endotracheal intubation tube intubated into esophagus;

FIG. 2 is an anatomical diagram illustrating a conventional nasal endotracheal intubation tube intubated into esophagus;

FIG. 3 is a perspective view illustrating an oral or nasal endotracheal intubation tube according to an example embodiment of the present invention;

FIG. 4A is a cross-sectional view taken along a line I-I' of FIG. 3;

FIG. 4B is a cross-sectional view taken along a line II-II' of FIG. 3;

FIG. 5 is an anatomical diagram illustrating the oral or nasal endotracheal intubation tube of FIG. 3, intubated through an oral cavity into trachea;

FIG. 6 is an anatomical diagram illustrating the oral or nasal endotracheal intubation tube of FIG. 3, intubated through a nasal cavity into trachea;

FIG. 7 is a perspective view illustrating an oral or nasal endotracheal intubation tube according to another example embodiment of the present invention;

FIG. 8 is an anatomical diagram illustrating the oral or nasal endotracheal intubation tube of FIG. 7, guided into trachea; and

FIG. 9 is an anatomical diagram illustrating the oral or nasal endotracheal intubation tube of FIG. 7, intubated into trachea.

100, 200 : oral or nasal endotracheal intubation tube

110, 210 : tube part

120 : balloon 121 : inner tube

140 : cuff 150, 250 : block unit

151, 251 : first block portion 152, 252 : second block portion

The invention is described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Hereinafter, exemplary embodiment of the invention will be explained in detail with reference to the accompanying drawings.

FIG. 3 is a perspective view illustrating an oral or nasal endotracheal intubation tube according to an example embodiment of the present invention. FIG. 4A is a cross-sectional view taken along a line I-I' of FIG. 3. FIG. 4B is a cross-sectional view taken along a line II-II' of FIG. 3.

Referring to FIGS. 3 and 4, the oral or nasal endotracheal intubation tube according to the present example embodiment includes a tube part 110, a balloon 120, a cuff 140 and a block unit 150.

The tube part 110 includes a flexible material, and extends along a direction. The tube part 110 is a tube having an opening at a center through which an air passes.

The balloon 120 passes through a side of the tube part 110, and is connected to the cuff 140.

The balloon 120 includes an inner tube 121, and the inner tube 121 passes through the side of the tube part 110 and is connected to the cuff 140 positioned at an end portion 111 of the tube part 110.

Thus, the cuff 140 expands when the air or the fluid is flowed into the balloon 120, and contracts when the air or the fluid is flowed out from the balloon 120.

Here, the inner tube 121 may pass through a wall of the tube part 110 as illustrated in FIGS. 3, 4A and 4B.

The cuff 140 is connected to the end portion 111 of the tube part 110. The cuff 140 is connected to the end portion 111 of the tube part 110, and expands or contracts as the air or the fluid is flowed in or out from the balloon 120.

Here, the cuff 140 is spaced apart from an end of the tube part 110 by a predetermined distance, and thus the end portion 111 of the tube part 110 is extended from the cuff 140 by a predetermined distance.

The cuff 140 surrounds the tube part 110, and thus expands uniformly around the tube part 110 when expanding.

Thus, the cuff 140 uniformly blocks the trachea with intubated into the trachea when the cuff 140 expands.

The block unit 150 is disposed at a rear side of the cuff 140, and for example, considering an average size of the patient, may be disposed at the rear side of the cuff 140 by less than about 5 cm.

The block unit 150 includes a first block portion 151 and a second block portion 152. The first and

second block portions

151 and 152 are connected with each other to form a single block unit 150.

Here, the first and

second block portions

151 and 152 are distinguished for convenience of explanation, and are integrally connected with each other.

The block unit 150 encloses and covers the tube part 110. Here, the block unit 150 encloses and covers a portion of the tube part 110 opposite to the inner tube 121, rather than a portion of the tube part 110 close to the inner tube 121.

For example, as illustrated in the figure, a cross-sectional shape of the block unit 150 may be a curved shape such as a circular shape or an elliptical shape. Here, an upper circumference of the block unit 150 is same as a circumference of the tube part 110 in which the inner tube 121 extends, but a lower circumference of the block unit 150 encloses and covers the tube part 110 spaced apart from the circumference of the tube part 110 opposite to the inner tube 121.

Thus, the block unit 150 encloses an outer surface of the tube part 110 to be protruded toward a lower portion of the tube part 110 ("the lower portion" is defined based on the illustrated in FIG. 3).

Here, the first block portion 151 is positioned closer toward the cuff 140, compared to the second block portion 152. When the first block portion 151 has a first inner radius and the second block portion 152 has a second inner radius, the first inner radius is larger than the second inner radius.

The first block portion 151 closer toward the cuff 140 is protruded more with a larger inner radius, compared to the second block portion 152, and the block unit 150 has a dual-protruded shape.

Each of the first and

second block portions

151 and 152 of the block unit 150 may have a spherical shape, and may have a cross-sectional shape of circle or ellipse, in a whole including the tube part 110. However, each of the first and

second block portions

151 and 152 of the block unit 150 may have a hemi-spherical shape or an elliptical shape, and may have a cross-sectional shape of a half-circle or a half-ellipse, except for the tube part 110.

Accordingly, in the block unit 150, the first block portion 151 is protruded more than the second block portion 152, and the first block portion 151 is protruded from the lower portion of the tube part 110.

The block unit 150 includes a silicon material, and is flexible.

FIG. 5 is an anatomical diagram illustrating the oral or nasal endotracheal intubation tube of FIG. 3, intubated through an oral cavity into trachea. FIG. 6 is an anatomical diagram illustrating the oral or nasal endotracheal intubation tube of FIG. 3, intubated through a nasal cavity into trachea.

As illustrated in FIGS. 1 and 2, in the blind endotracheal intubation using the conventional oral or nasal endotracheal intubation tube 10, the esophagus 3 is positioned at the rear side of the trachea 2 when the patient lie on a bed(the esophagus 3 is positioned at the lower side of the trachea 2 as illustrated in the figure, but the esophagus 3 is positioned at the rear side of the trachea 2 when the patient stands, and thus the positions of the elements of the example embodiments of the present invention will be explained based on the standing positon of the patient), and thus the end portion 15 of the tube 10 is easy to be intubated into the esophagus 3 without the guiding. Thus, the blind endotracheal intubation may be performed more incorrectly.

Thus, in the present example embodiment, the above mentioned problem may be solved. As illustrated in FIGS. 5 and 6, when the tube part 110 passes through the pharynx 4 via the oral or nasal cavity, the first block portion 151 guides the end portion 111 of the tube part 110 forwardly with protruding toward the rear side of the tube part 110, at a position between the esophagus 3 and the trachea 2. Thus, the end portion 111 of the tube part 110 is correctly guided into the trachea 2.

When the patient lies on the bed, the esophagus 3 is disposed at the rear side of the trachea 2 and thus the end portion 111 of the tube part 110 guided forwardly may be intubated into the trachea 2 more easily. Thus, the endotracheal intubation may be performed more correctly.

The second block portion 152 is protruded less than the first block portion 151, and thus the pharynx 4 of the patient on the bed is less pressed. Thus, the patient may be more convenient.

Accordingly, the first and

second block portions

151 and 152 guides the tube part 110 more correctly with maintaining the patient more comfortably.

FIG. 7 is a perspective view illustrating an oral or nasal endotracheal intubation tube according to another example embodiment of the present invention.

The oral or nasal endotracheal intubation tube 200 according to the present example embodiment is substantially same as the oral or nasal endotracheal intubation tube 100 explained above referring to FIGS. 3 to 6, except for a balloon and a cuff are omitted.

Referring to FIG. 7, the oral or nasal endotracheal intubation tube 200 includes a tube part 210 and a block unit 250.

The tube part 210 includes a flexible material, and extends along a direction. The tube part 210 is a tube having an opening at a center through which an air passes.

The block unit 250 is disposed at an end portion 211 of the tube part 210, and includes a first block portion 251 and a second block portion 252.

Here, the first and

second block portions

251 and 252 are distinguished for convenience of explanation, and are integrally connected with each other.

The block unit 250 may have a shape substantially same as that of the block unit 150 explained above, and the position of the block unit 250 is at the end portion 211 of the tube part 210.

The block unit 250 according to the present example embodiment may have a shape substantially same as the block unit 150 explained above, and the block unit 250 is positioned instead of the cuff 140 at the position where the cuff 140 is positioned in the oral or nasal endotracheal intubation tube 100 of the previous example embodiment.

FIG. 8 is an anatomical diagram illustrating the oral or nasal endotracheal intubation tube of FIG. 7, guided into trachea.

Referring to FIG. 8, when the tube part 210 passes through the pharynx 4 via the oral or nasal cavity, the first block portion 251 guides the end portion 211 of the tube part 210 forwardly with protruding toward the rear side of the tube part 210, at a position between the esophagus 3 and the trachea 2. Thus, the end portion 211 of the tube part 210 is correctly guided into the trachea 2.

The guiding in the present example embodiment is substantially same as the guiding as mentioned in the previous example embodiment.

Referring to FIG. 9, the tube part 210 is intubated through the oral or nasal cavity and is guided for the end portion 211 inside of the trachea 2, and then the first block part 251 is protruded to block the trachea 2 with inserted into the trachea 2.

For example, an inner radius of the first block portion 251 may be larger enough to block an inside of the trachea 2, and the user may select one of first block portions with various kinds of radius considering the radius of the trachea 2 of the patient.

Accordingly, in the present example embodiment, the block unit 250 guides the tube part 210 into the trachea 2 and blocks the trachea 2 inserted into the trachea 2. Thus, the cuff or the balloon in the conventional tube part may be omitted, and the intubation tube may be more easily manufactured and user's convenience may be enhanced.

According to the example embodiments, the block unit fixed at a rear portion of the cuff is additionally formed, and guides the intubation tube inserted through the oral or nasal cavity toward the trachea, so that the endotracheal intubation may be more correctly in case of the blind endotracheal intubation.

Having described the example embodiments of the present invention and its advantage, it is noted that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by appended claims.

Claims

An oral or nasal endotracheal intubation tube comprising:

a tube part extending along a direction with a tube shape; and

a block unit comprising a first block portion having a first radius and a second block portion having a second radius shorter than the first radius, and guiding the tube part into trachea when the tube part is inserted into an oral or nasal cavity.
The oral or nasal endotracheal intubation tube of claim 1, further comprising:

a balloon extending with passing through the tube part, disposed in front of the block unit to be connected to an end portion of the tube part, and expanding or contracting a cuff uniformly expanded around the tube part.
The oral or nasal endotracheal intubation tube of claim 1, wherein the first block portion is positioned adjacent to the cuff closer than the second block portion.
The oral or nasal endotracheal intubation tube of claim 1, wherein the cuff is expanded to block the trachea with the tube part being intubated to the trachea.
The oral or nasal endotracheal intubation tube of claim 1, wherein the first block portion makes contact with a rear side of pharynx to guide an end portion of the tube part into the trachea, when the tube part is inserted through the oral or nasal cavity.
The oral or nasal endotracheal intubation tube of claim 5, wherein the first block portion blocks the trachea with the tube part intubated into the trachea.
The oral or nasal endotracheal intubation tube of claim 1, wherein the first and second block portions are protruded from a rear side of the tube part.
The oral or nasal endotracheal intubation tube of claim 7, wherein each of the first and second block portions has a hemi-spherical shape or an elliptical shape when protruded from the rear side of the tube part.
The oral or nasal endotracheal intubation tube of claim 1, wherein the block unit includes a silicon material.