JPH087867Y2 - Double lumen endotracheal tube - Google Patents

Description

TECHNICAL FIELD The present invention relates to a double-lumen type endotracheal tube used for anesthesia and respiratory management in thoracic surgery.

2. Description of the Related Art Conventional endotracheal tubes of this type are mainly made of vinyl chloride resin, and their lumens are arranged side by side in the axial direction of the tube body. It projects a predetermined length from the tip opening of the other lumen. In addition, balloons are provided on the outer peripheries of the tube bodies near the tip openings of both lumens.

In this conventionally known endotracheal tube 1, as shown in FIG. 5 as a surgical example using this, the distal end opening of one lumen 3 of the tube body 2 is inserted to the left bronchus, and the other The distal end opening of the lumen 4 is inserted to the right bronchial entrance, and then both balloons 5 and 6 are inflated and fixed. At the time of the insertion, for example, a stylet (not shown) is used.

Then, using the tube 1 fixed as described above and left in the body, anesthesia for maintaining anesthesia, for example, before surgery, from the rear end opening of the lumens 3 and 4 outside the body (not shown) Gas or oxygen (breathing gas) for breathing is put in, and an endoscope for watching the progress of the operation or a tube for sucking secretions from the bronchi is put in during and after the operation.

However, in the case of the above-mentioned conventional endotracheal tube 1,
Normally, the tube body 2 is inserted while being bent along the trachea at the time of insertion, but when the bent and inserted tube body 2 is warmed to the body temperature and gets into the body or a force is applied from the outside, the bending is performed. Moreover, there is a problem in that it bends from the inside and blocks the lumens 3 and 4, making it impossible to perform the operations before, during, and after the operations in 1) above.

Therefore, the present invention solves the above-mentioned conventional problems, prevents the tube body from being bent during the operation, and does not block the lumen, and is safe and always
An object of the present invention is to provide an endotracheal tube capable of stably performing such work.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention is directed to two lumens having substantially the same opening area arranged side by side in the axial direction of the tube body, one of which has a tip opening. Balloons are provided on the outer periphery of the tube main body near the tip openings of both lumens by a predetermined length from the tip openings of the other lumen, and longitudinal small holes for inflating these balloons are provided. In the double lumen endotracheal tube formed on the peripheral wall of the tube body between the lumens, a linear body is formed on the peripheral wall of the tube main body including the tip of one protruding lumen. It is embedded in a spiral shape and elastically deformable.

Regarding this embedding, a linear body may surround each of the lumens and embed them.

Action With the above configuration, the bending of the tube body is prevented by the linear body, and the situation in which the lumen is blocked is avoided.

Further, in the case of claim 2, the wall separating the two lumens is distorted, and it is prevented at the same time from being biased toward one of the lumens.

Embodiment 1 In FIGS. 1 and 2, reference numeral 11 is an endotracheal tube made of silicone rubber, and lumens 13 and 14 are arranged side by side in the axial direction of the tube body 12.

On the tip side of the tube body 12, the portion 12a having the lumen 13 is longer than the portion 12b having the lumen 14, and the tip opening portion 13a of the lumen 13 has a predetermined length from the tip opening portion 14a of the lumen 14. L
(For example 40-60 mm) is projected. The rear end side of the tube body 12 is bifurcated into a portion 12c having an inner cavity 13 and a portion 12d having an inner cavity 14 over a substantially equal length.

Balloons 15 and 16 are provided on the tip side outer circumference of the portion 12a having the lumen 13 in the tube body 12 and on the outer circumference at a position near the base end of the portion 12a. Longitudinal small holes 17,1 formed in the peripheral wall
Air is sent from the air introduction pipes 19 and 20 via 8.

22 is a linear body formed of stainless wire or the like, the inner wall 13,14 (of course, in the case of each of the above-mentioned portions, the inner wall 13 or It is embedded in a spiral shape so as to be elastically deformable so as to surround (14 only) and the lumens 13 and 14 are not blocked by the bending of the tube body 12.

The endotracheal tube 11 as described above, by using a stylet as in the conventional one, the distal end opening portions 13a, 14a of the lumens 13, 14 are respectively inserted into the target bronchus, and the balloons 15, 16 are It is fixed by swelling by the introduction of air and then placed in the body.

Then, a anesthetic gas or the like is introduced through the lumens 13 and 14, and a predetermined operation is performed, but at this time, the body temperature is warmed,
Even if the user tries to bend due to getting used to the body or exerting a force from outside the body, it is blocked by the linear body 22. That is, the linear body 22 with respect to the bending.
Although it is elastically deformed to some extent, it acts as a resistance so as not to block the lumens 13 and 14.

FIGS. 3 and 4 show different embodiments, and in these embodiments, the linear bodies 23 and 24 are embedded so as to surround each of the lumens 13 and 14, respectively, which is different from the above embodiments, The other parts have the same configuration. In the embodiment shown in FIG. 3 and the embodiment shown in FIG. 4, the shapes of the lumens 13 and 14 and the small holes 17 and 18 are mainly used.
Are different in size.

In the case of these examples, since the linear bodies 23, 24 are also embedded in the walls 25, 26 that separate the lumens 13, 14, the walls 25, 26 are inserted in the horizontal direction in FIGS. There is an advantage in that it is possible to prevent the walls 25 and 26 from being distorted and being biased to one of the lumen sides 13 or 14 by applying force.

Incidentally, the above embodiment is only a preferable example, and the detailed design, for example, the material of the tube body 12 and the linear members 22, 23, 24, the shape of the inner cavities 13, 14, the formation of the small holes 17, 18. The position and size can be modified in various ways without changing the gist.

Effect of the Invention In the case of claim 1, the linear body can prevent the lumen from being blocked due to the bending of the tube body. This kind of work is always stable and safe. Further, when the linear body is embedded in the peripheral wall of the tube body in the double lumen type endotracheal tube, the size of the two lumens, the size of the two axial small holes for the balloon, and the arrangement of these, etc. It is a very important factor together with the thickness of the peripheral wall of the.
In such a case, the linear body can be embedded in the arrangement as described above while maintaining a good arrangement balance thereof, and there is an effect that the manufacturing becomes easy. In the case of claim 2, in addition to the above effect, it is possible to prevent the wall separating the lumen from being distorted and being biased toward one of the lumens at the same time. There is an excellent effect that can be provided.

[Brief description of drawings]

FIG. 1 is an overall front view of an embodiment of the present invention, partially omitted and partially broken, FIG. 2 is an enlarged sectional view taken along the line II-II of FIG. 1, FIG. 3 and FIG. 2 is an enlarged sectional view corresponding to FIG. 2 showing another embodiment, and FIG. 5 is a drawing showing a state in which an operation is performed using a conventional typical endotracheal tube. 11 …… tracheal tube, 12 …… tube body 13,14 …… lumen, 15,16 …… balloon 17,18 …… small hole, 19,20 …… air introduction tube 22,23,24 …… line Shape, 25,26 ... wall

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) Bibliography Sho 63-3841 (JP, U) Japanese Patent Sho 60-15339 (JP, B2)

Claims (2)

[Scope of utility model registration request] 1. Two lumens having substantially the same opening area are arranged side by side in the axial direction of a tube main body, and a tip opening of one of the lumens projects a predetermined length from a tip opening of the other lumen. In addition, balloons are provided on the outer circumference of the tube body near the tip openings of both lumens, and longitudinal small holes for inflating these balloons are formed on the peripheral wall of the tube body between the lumens. The double-lumen type endotracheal tube is provided with a linear body spirally and elastically deformable around the lumen on the peripheral wall of the tube main body including the distal end of the protruding one lumen to extend substantially the entire length. Double lumen endotracheal tube characterized by being buried. 2. The endotracheal tube according to claim 1,
A double-lumen type endotracheal tube in which a linear body is embedded so as to surround each lumen.