JPH0119960Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drainage tube used for draining liquid that accumulates after surgery on the head or the like.

As shown in FIG. 5, the conventional drainage tube 1 has a predetermined number of holes 2 at the distal end of the tube. However, in this case, it is not possible to make a hole large enough for the diameter of the tube, so not only is the hole large enough to pass a relatively viscous liquid, but the hole is Because it is a through hole for the tube,
The disadvantage is that the strength of the side wall in that area is weak, and the tube often bends at the hole during use, making it impossible for viscous liquids or even liquid materials to pass through.

The present invention aims to improve these drawbacks and provide a drainage tube that is highly effective.

The following will be explained with reference to the drawings. Figs. 1 to 4 show a drainage tube A of the present invention, where 1 is a tube and 2 is a hole. These holes are provided one by one at predetermined intervals in the tube side wall without penetrating the opposite wall. For example, the holes are provided in a spiral shape on the side wall of the tube, and the interval between the holes is preferably 5 per circumference, preferably 4, and the shape of the holes is circular, oval, or any other shape that does not damage the strength of the tube. For example, it may have any shape, but is preferably circular or oval. Further, the holes may be arranged either regularly or irregularly, but it goes without saying that the arrangement must not impair the strength.
The material constituting the tube may be any flexible material, and various biomaterials such as silicone, fluororesin, polyethylene, polypropylene, and polyvinyl chloride are used.

In addition, the drainage tube of the present invention can be used not only for ventricular drainage, but also for various types of drainage such as chronic subdural hematoma, intracerebral hematoma, cisternal drainage, abscess drainage, and hematoma drainage, and exhibits excellent effects.

As described above, in the present invention, the holes of the drainage tube are arranged as described above, so that the diameter of the holes can be made larger than that of conventional ones, and the viscous liquid can easily pass through. , it is possible to provide the tube with sufficient bending strength, which is a particularly remarkable effect compared to the conventional method. Furthermore, it is possible to obtain a drainage tube that has both economical and technical effects such that even a weak tube made of polyvinyl chloride or the like can sufficiently maintain its strength.

[Brief explanation of the drawing]

Figures 1 to 4 show the drainage tube of the present invention; Figure 1 is a perspective view, Figure 2 is a cutaway view of the tube along A-B, and Figures 3 and 4 are views of the drainage tube cut away from A-B. FIG. 5 is a side view of a conventional drainage tube. Reference symbol A in the drawing: drainage tube, 2: tube,
3: Hole.

Claims (1)

[Scope of utility model registration request] A drainage tube for head surgery, characterized in that at least three or more larger holes are spirally provided in the side wall near the tip of the flexible tube without penetrating the opposite wall.