Catheter Fixation Device

Abstract

To provide a catheter fixing device that prevents adhesion between a cuff and the intestine, which is a cause of catheter deviation, in an implantable nephrostomy catheter and a vesicostomy catheter. [Solution] The basic structure of the catheter fixture is composed of a disk-shaped cuff 1, a disk-shaped plastic flange 2 that supports it, and a tubular part 3 that grips the catheter, and the catheter is passed through the inner cavity of the tubular part 3 and held by the catheter fixture. A cuff outer periphery covering part 2a has been newly added to the catheter fixture, which extends flange 2 of the fixture outward to cover the outer edge of the cuff.

Description

[Technical field]

[0001] The present invention relates to an improvement in a catheter fixing device for preventing the tip of a catheter, which is inserted and placed in an organ lumen, from escaping from the organ lumen. [Background technology]

[0002] In recent years, ureteral bypass surgery has become popular as a treatment for ureteral obstruction. In this procedure, a fixation device is used that can grasp and fix the catheter on the outer surface of the organ and glue it to the outer surface of the organ to keep the catheter tip in the organ lumen. This catheter fixation device has a synthetic fiber cuff (mainly a Dacron cuff) on the organ contact surface, and in clinical use, it is glued and fixed to the outer surface of the organ with cyanoacrylate. There have been reported clinical cases in which the exposed part of the cuff other than the organ contact part becomes integrated with the large intestine and the catheter tip becomes dislodged from the organ due to the movement of the large intestine. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility model registration No. 3216882 [Patent Document 2] Utility model registration No. 3209522 [Patent Document 3] Utility model registration No. 3211050 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional catheter fixing devices, as shown in Fig. 1, a cuff fabric layer is arranged so as to contact the external surface of an organ such as the kidney or bladder, but this cuff fabric layer is exposed not only on the organ contact surface but also on the outer side and back, and these exposed parts come into contact with the intestinal tract, causing irritation and adhesion, which causes catheter deviation. The present invention provides an improved catheter fixing device to prevent adhesion of the catheter fixing device to the intestinal tract. [Means for solving the problem]

[0005] The present invention is an improvement over the existing fixing device in that the outer edge of the cuff other than the organ contact surface, as well as the exposed cuff fibers on the outer back surface, are covered with plastic. Effect of the Invention

[0006] According to the catheter fixing device of the present invention, the cuff fiber layer, which is irritating to the intestinal tract, is covered with plastic, so that the cuff fiber layer does not come into direct contact with the intestinal tract, and adhesion of the fixing device to the intestinal tract is prevented. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a cross-sectional view showing an existing catheter fixing device. [Diagram 2] FIG. 2 is a cross-sectional view showing the catheter fixing device of the present invention. [Diagram 3] FIG. 2 is a cross-sectional view showing the catheter fixing device of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The basic structure of an existing catheter fixture, as shown in Figure 1, consists of a disk-shaped cuff 1, a disk-shaped plastic flange 2 that supports it, and a tubular part 3 that grips the catheter. The catheter is passed through the lumen of the tubular part 3 and held by the catheter fixture. The catheter fixture is fixed to the organ by attaching the organ contact surface of the cuff 1 to the outer surface of the organ with cyanoacrylate.

[0009] Fig. 2 is a cross-sectional view of a catheter fixing device according to one embodiment of the present invention. As shown in the figure, the catheter fixing device is a device in which the flange portion 2 of the conventional fixing device is extended outward to newly add a cuff outer peripheral covering portion 2a so as to cover the outer edge of the cuff.

[0010] 3 is a cross-sectional view of a catheter fixing device according to another embodiment of the present invention. The catheter fixing device has a cuff outer peripheral covering part 2a, which is a conventional flange part 2 extended outward to cover the outer edge of the cuff, and is further extended outward to have a thinner tip. [Explanation of symbols]

[0011] 1 Cuff 2. Flange 2a Cuff outer covering part 3 Cylindrical section

Claims

1. A catheter fixing device equipped with a disk-shaped synthetic fiber cuff for fixing a catheter to the surface of an organ so that the tip of an implantable nephrostomy catheter or a cystostomy catheter can be retained and fixed within the organ, characterized in that all of the cuff's surfaces except for the organ-contacting surface and the catheter-contacting surface are tightly coated with plastic.

2. 2. The catheter fixing device according to claim 1, wherein a plastic portion covering the outer peripheral surface of the disc-shaped synthetic fiber cuff is extended outwardly to a thinner tip.

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