JP2580636Y2 - catheter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a catheter for administering a drug or the like into a body, and the reinforcing member is embedded in a wall constituting the catheter to extend from the indwelling part of the patient to the inside of the body. This eliminates any accidental breakage of the catheter.

[0002]

2. Description of the Related Art Conventional IVH and epidural catheters are made of materials such as polyvinyl chloride resin, polyethylene, polypropylene, polyurethane and silicone, and have an outer diameter of 5.0 to 1.0 mm and an inner diameter of 4.0 to 4.0. 0.5m
m, a tube having a thickness of about 1.0 to 0.21 mm and having 1 to 4 lumens.

[0003]

However, the catheter having the above-mentioned shape, structure and material has the following problems. When the catheter is placed in the patient's body The catheter placed in the patient's body may break during the placement period, due to factors such as prolonged placement period, improper placement site, and increased patient's momentum. In some cases, drug administration could not be performed, bacteria could propagate in the broken part, and the cut pieces sometimes formed thrombi.

[0004] When the catheter is removed, the catheter may be broken at a location weakened during the indwelling due to the same reason as described above, causing a severe thrombotic disorder or remaining in the body as described above. was there. Therefore, the present inventors have made intensive studies to solve the above problems and arrived at the next invention.

[0005]

According to the present invention, there is provided a catheter comprising a lumen 13 and an uneven wall 12, and a reinforcing member 15 is helically embedded in the length direction of the thick side 14 of the wall 12. 1
1 is provided.

[0006]

The reinforcing member 15 is provided on the wall 12 constituting the catheter.
Since the wall 12 and the reinforcing member 15 constituting the catheter are helically embedded and tightly entangled with each other by the anchoring effect, the catheter does not break.

[0007]

FIG. 1 is a schematic (partially sectional view) of a catheter 11 according to the present invention. Figure 2 is a sectional view taken along line B-B of FIG. The tubular catheter 11 is made of polyvinyl chloride
Fat, polyethylene, polypropylene, polyurethane,
It comprises an uneven wall 12 made of a material such as a cone and a lumen 3 formed inside the wall 12.

A reinforcing member 15 (made of a material such as wire or nylon 6-6 ) is embedded in a spiral shape (a shape in which several pieces are inserted) in the length direction of the thick side 14 of the wall 12. I have. Reinforcing material 15 is exposed at the tip of catheter 11
Coating by dipping etc.
(Not shown). Also, the rear end of the catheter 11
A connector (not shown) is attached accordingly. Catete
The rule 11 is manufactured as follows.

Extrusion of a tube constituting the catheter 11
At the time of forming, the reinforcing material 15 is introduced into the wall 12 and cooled and solidified.
Wall 12 and reinforcement 15 are firmly entangled by the anchor effect
Let me know. Subsequently, the catheter 11 is cut,
11 Make sure that the tip does not
Construction materials of the catheter 11 as the strength member 15 is not exposed
Dipping with resin of the same material as
Glue the tape. On the other hand, the rear end of the catheter 11 is necessary
The connector is mounted by bonding or insert molding according to
Be worn.

In use, the patient's skin is pierced with an introducer needle.
After piercing, connect the lumen 13 to the catheter 11
Insert the catheter 11 into the lumen 13 from the rear end of the catheter 11
Through the end, while periodically administering drugs according to the condition,
During the indwelling period, the catheter 11
Observation of the rupture status (damage, deterioration status)
0-90 days), no breakage
Was. Also breaks when the catheter 11 is removed from the patient
Was none.

[0011]

[Effect of the invention] As described above, in the present invention, uneven thickness
Three-dimensional spiral reinforcement is embedded in the thick side 14 of the wall 12
Easy to set up. Reinforcing even small catheters
It is easy to bury the material, and there is a concern that the reinforcing material will be exposed from the wall
No, it is stable in strength. Keep the performance of
In addition, a stable liquid flow path can be secured,
It can be easily inserted.

[Brief description of the drawings]

FIG. 1 is a schematic view of the catheter of the present invention.

FIG. 2 is a sectional view taken along line BB of FIG. 1;

[Description of sign]

 11 catheter 12 wall 13 lumen 14 thick wall 15 reinforcing material

Claims (1)

(57) [Scope of request for utility model registration] (1) It comprises a lumen (13) and an uneven wall (12),
A catheter 11 characterized in that a reinforcing material 15 is helically embedded in the length direction of the thick side 14 of the wall 12.