JPS5822755Y2 - catheter - Google Patents

Description

[Detailed description of the invention] This invention relates to a tracheal suction catheter used for suctioning and removing phlegm accumulated in the bronchi of the lungs.

In clinical medicine, particularly in the respiratory management of patients under anesthesia and respiratory failure, removing sputum accumulated in the bronchi is the most important thing in maintaining life.

To remove such sputum, insert a tracheal tube or tracheal cannula into the trachea, insert a flexible catheter made of rubber or plastic inside the trachea, position the tip at the desired location, and remove it by suction. The method is adopted.

By the way, in the adult lung, as shown in Figure 1, the left and right bronchi 2 and 3 that branch from the end of the trachea 1 have different inclinations, and the angle α (average) between the right bronchus 3 and the tracheal axis 1/ 2
5 degrees) is smaller than the angle β (45 degrees on average) that the left bronchus 2 makes with the tracheal axis 1'.

For this reason, when a straight catheter is simply inserted into a tracheal tube or tracheal cannula, the tip of the catheter is unlikely to invade the left bronchus 2, and there is a very high probability that it will invade the right bronchus 3.

Therefore, it is easy to suction the sputum that accumulates in the right bronchus, but it is very difficult to remove the sputum from the left bronchus.

Therefore, complications are more likely to occur in the left lung.

Therefore, attempts have been made to use a catheter with a bent tip and insert it into the bronchus where sputum is to be collected, with the tip of the catheter pointing in the bent direction, but it is difficult to feed the catheter without rotating it. Therefore, it is not possible to position the tip of the catheter in the target bronchus.

In view of the above points, this invention provides a catheter whose tip can almost certainly be positioned toward the target bronchus by a simple operation of inserting the catheter into a tracheal tube, tracheal cannula, etc. It is something.

Hereinafter, a practical example of this invention will be explained based on the attached drawings.

As shown in FIGS. 2 to 4, the tracheal suction catheter 11 according to the present invention includes a cylindrical body 12, and the distal end of the cylindrical body 12 is bent to form a sputum collection cylinder part 13. A display section 14 for guiding insertion is provided linearly from the tip of the section 13 over the entire length of the cylinder 12.

Further, the catheter 11 is made of rubber or plastic and is given flexibility.

As shown in FIG. 4, the display section 14
It is located on the side where the sputum collection tube part 13 is bent, or on the opposite side thereof, indicating the bending direction of the sputum collection tube part 13.

Such a display section 14 may be displayed as a line, or may be displayed with a dotted line on the line.

Further, when molding the catheter, raw materials of different colors may be drawn out in a linear manner.

Note that 15 is a suction hole formed in the sputum collection tube 13.

Now, as shown in FIG. 1, when the tracheal tube or tracheal cannula 4 is inserted into the trachea 1, and the sputum collection cylinder part 13 of the catheter 11 is inserted into the inside of the tube, the sputum collection cylinder part 13 is inserted into the trachea 1.
invades the left or right bronchus 2°3.

In such an operation of inserting the catheter 11, if the display section 14 is inserted in one direction, the catheter 11 can be prevented from rotating, and the sputum collection tube section 13 at the tip can be maintained in the direction at the time of insertion. can be inserted.

Therefore, the sputum collection tube 13 can be positioned in the left bronchus 2 by inserting the sputum collection tube 13 into the catheter guide 4 toward the left lung 5 and inserting it while keeping the display section 14 in a constant direction. can.

Note that by attaching a dimensional scale on the display section 14 from the end of the sputum collection cylinder 13, the position of the tip of the sputum collection cylinder 13 can be easily adjusted, which is convenient.

Furthermore, the upper part of the cylinder 11 is bifurcated as shown in FIG. The position of the tip of the sputum collection cylinder 13 may be confirmed by listening to the audible sound signal transmitted from the sputum collection cylinder 13 with a stethoscope or the like.

As described above, according to this invention, a linear display part is formed from the tip of the sputum collection cylinder part to the entire length of the cylinder body, so that the catheter can be inserted with the display part facing in one direction. This makes it possible to prevent the catheter from rotating during insertion, and furthermore, the display section is located on the bent side of the sputum collection tube, or on the opposite side, so that the direction of bending of the sputum collection tube can be indicated. Therefore, even if the catheter rotates during catheter insertion, the orientation of the sputum collection tube can be corrected by rotating the catheter and directing the display to its original direction.

In addition, since the catheter is replaceable, as long as the display section is aligned with the fixed position and the catheter is fed, even if it is twisted midway through, the tip of the catheter will always return to the position based on the display section. By simply inserting the catheter toward the left or right lung, keeping the display section in the same direction, the sputum collection tube at the tip can be almost certainly located in the target bronchus.

[Brief explanation of drawings]

Fig. 1 is a front view showing the catheter according to the invention in use, Fig. 2 is a front view showing a part of the same catheter, Fig. 3 is a cross-sectional plan view of the same, and Fig. 4 is a perspective view of the same. It is a diagram. 11... Catheter, 12... Cylindrical body,
13... Sputum collection cylinder part, 14... Display part.

Claims (1)

[Scope of Claim for Utility Model Registration] l The tip of a flexible cylinder is bent to form a sputum collection cylinder 4, and a sputum collection cylinder 4 is formed from the end of the sputum collection cylinder for insertion guidance over the entire length of the cylinder. A tracheal suction catheter characterized in that a display section is provided in a straight line, and the display section is located on a bent side of the sputum collection tube section and/or on the opposite side thereof. 2. The tracheal suction catheter according to claim 1, wherein the display portion is a line of a different color with respect to the cylindrical body.