JPH0221076Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a chest drain tube used in open heart surgery and the like.

(Prior Art) Postoperative drain tubes used in open-heart surgery and the like have a circular or flat cross section. In particular, flat drain tubes are preferably used for drain tubes in the cardiac region or longitudinal thoracic sinuses because they place less local pressure on tissues, organs, blood vessels, etc. In addition, it is desirable that the tube be soft in order to reduce local pressure, but the fact that it is easily blocked by external pressure is a major drawback.

(Objective of the invention) The object of the invention is to provide a chest drain tube which is made of a soft material and which prevents the tube from being blocked by external pressure and negative pressure due to suction.

(Problems to be solved by the invention) The drain discharge tube after thoracic surgery is configured to suction the drain from the side hole at the tip, but it is bent and set along the outer periphery of a soft organ. It is necessary to minimize the pressure on tissues, organs, and blood vessels, and it is desirable that the material of the drain tube be as soft as possible. On the other hand, since a negative pressure is applied inside the drain tube to discharge the drain, the portion where the tube is bent and set is likely to become clogged. Furthermore, the drain tube is normally guided from the inside of the thoracic cavity to the outside of the body through the rib cage, and the portion that passes between the ribs is particularly strongly compressed by the ribs on both sides. Furthermore, in order to facilitate connection with the drainage tube, the tube is often bent 180 degrees around the part where it is held between the ribs. In this case, it becomes more likely to become blocked.

This invention simultaneously solves the two conflicting demands of making the drain tube material soft in order to minimize pressure on tissues, organs, and blood vessels, and preventing blockage of the tube, especially in the area where it passes between ribs. This is what I am trying to do.

(Means for solving the problem) In order to solve the above problem, in the thoracic drain tube of the present invention, only the passage between the ribs is made highly rigid, and this position is located at the tip of the drain tube. It was decided to apply it over a length of about 5 cm approximately 5 cm behind the rearmost side hole of the plurality of side holes for drain suction. The materials used include PVC, polyethylene, and silicone rubber.

(Function) As mentioned above, by making this part highly rigid over a length of 5 cm 5 cm behind the rearmost side hole of the drain suction side hole group, external pressure will not be applied when passing between the ribs. The risk of blockages caused by external pressure in areas that are prone to leakage can now be prevented.

(Example) For the above purpose, the predetermined portions of the chest drain tube were made highly rigid. That is, the present invention will be explained below using the illustrated embodiments.

Fig. 1 is a plan explanatory view of one embodiment of the present invention, and Fig. 2 is a side explanatory view thereof, in which the figure shows a drain tube with a circular cross section, 1 is the drain tube body, and 2 is a drain tube body. Among the drain suction side holes, 2a is the rearmost drain suction side hole.
A highly rigid portion 3 having a length of approximately 5 cm is formed approximately 5 cm behind this side hole 2a. For example, if the drain tube is a soft tube made of polyvinyl chloride, this highly rigid part 3 can also be obtained by extracting and removing the plasticizer from only this part with alcohol or the like, or by removing the plasticizer from the tube body 1. You may inherit a hard one with a small amount of friction. Of course, other rigid pipes may also be embedded within the wall thickness. 4 is a connection part to a connector or other tube.

The cross-sectional explanatory diagram in FIG. 5 is another embodiment of the present invention,
A spiral body 5 made of a hard elastic material is embedded into the thickness of the tube wall to form a highly rigid part 3a, and FIG. 6 shows a highly rigid part 6 formed in a corrugated shape. 3b is formed.

(Effects) The present invention has the above-mentioned configuration, and the portion 3 is made highly rigid over a length of about 5 cm at the rearmost side hole 2a of the drain suction side hole 2 about 5 cm behind.
Therefore, it is possible to create a chest drain tube in which the dangerous phenomenon of the drain tube being blocked by external pressure does not occur at all.

[Brief explanation of the drawing]

Fig. 1 is a plan explanatory view of the chest drain tube of the present invention, Fig. 2 is a side view thereof, Fig. 3 is a cross-sectional view taken along line AA in Fig. 1, and Fig. 4 is a cross-sectional view taken along line B-B' in Fig. 1. FIG. 5 is a cross-sectional explanatory view of a highly rigid part in another embodiment of the present invention, and FIG. 6 is a cross-sectional explanatory diagram of a highly rigid part in yet another embodiment. 1... Chest drain tube body, 2... Side hole for drain suction, 2a... Rearmost side hole, 3, 3
a, 3b...High rigidity part, 4... Connection part, 5...
Spiral structure, 6...corrugated part.

Claims (1)

[Scope of claim for utility model registration] (1) A drain tube mainly used for open heart surgery, with multiple suction side holes near the tip;
Approximately 5cm behind the rearmost side hole in the suction side hole.
A chest drain tube characterized by having a highly rigid part extending over a length of cm. (2) The chest according to claim 1, wherein the highly rigid portion of the drain tube is formed by embedding a spiral hard member into the wall thickness of the tube. Drain tube. (3) The chest drain tube according to claim 1, wherein the tube wall of the highly rigid portion of the drain tube is formed into a corrugated shape.