JPH0425819B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for early detection of peritonitis occurring in peritoneal dialysis.

[Conventional technology]

Dialysis therapy has traditionally been performed for patients with decreased kidney function, but in recent years a method called continuous ambulatory peritoneal dialysis (hereinafter abbreviated as CAPD) has been developed, increasing the opportunity to perform peritoneal dialysis. is increasing. Although peritoneal dialysis has various advantages over hemodialysis, there is a problem that peritonitis due to bacterial infection is likely to occur because the intraperitoneal cavity has a low defense function against bacteria. Therefore, various methods have been proposed to reduce the occurrence of peritonitis, but no perfect method has yet been obtained. It is preferable to detect and treat the occurrence of peritonitis as early as possible, but until now there has been no effective means for peritonitis, and in most cases it was only discovered after the patient complained of subjective symptoms.

[Problem that the invention seeks to solve]

An object of the present invention is to provide a device that can detect the occurrence of peritonitis at an early stage. Another object of the present invention is to provide a device that can easily detect the occurrence of peritonitis.

[Means for solving problems]

The present invention is a peritonitis detection device characterized in that a turbidity measuring means is attached to the external side of a transparent tube for discharging dialysate stored in the peritoneal cavity. As the turbidity measuring means, various known means can be employed, but a method in which the tube is irradiated with light and its transmittance is determined is preferred. In other words, a monitoring circuit is installed that sandwiches the tube and provides a light emitting part on one side and a light receiving part on the other to quantify the amount of light received entering the light receiving part, and to issue an alarm when this falls below a predetermined value. It is something that

[Effect]

The present invention utilizes the fact that the dialysate becomes cloudy when peritonitis occurs, and detects whether peritonitis has occurred by measuring the turbidity of the dialysate.

〔Example〕

FIG. 1 is a schematic diagram of one embodiment of the peritonitis detection device of the present invention. As shown in the figure, the device is composed of a light emitting section 1 and a light receiving section 2, which are mounted opposite to a tube 5 that connects a peritoneal catheter and a dialysate bag, a monitoring circuit 3 connected to the light receiving section, and an alarm section 4. ing.

The light emitting section 1 is a lamp or light emitting diode that emits visible light or ultraviolet light, and the light receiving section 2 is a phototube, a photoconductive cell, or a photovoltaic cell that converts this light into an electrical signal. A portion of the light (visible light or ultraviolet light) emitted from the light emitting section 1 is absorbed by the tube and the dialysate flowing inside the tube, is scattered, and enters the light receiving section 2 . The light incident on the light receiving section 2 is converted into an amount of electricity and input into the monitoring circuit 3. The monitoring circuit amplifies the amount of electricity input from the light receiving section 2 and compares it with a reference value, and instructs the alarm section 4 to issue an alarm if it is lower than the reference value. If peritonitis occurs, the dialysate becomes cloudy and the amount of light received by the light receiving section 2 decreases, so an alarm is issued and it is possible to know that peritonitis has occurred.

Note that the amount of light incident on the light receiving section is also affected by variations in the light amount of the light emitting section, so in order to compensate for this, a second light receiving section that directly receives the light from the light emitting section is provided, and this and the above light receiving section are provided. Alternatively, the amount of light may be compared with the other parts. In addition, the amount of light received may be quantified instantaneously at a certain point in time, but it may also be done by integrating the amount of light received within a certain period of time, or by comparing the maximum value measured within a certain period of time with a reference value. You can also do this. Further, in order to avoid confusion with air bubbles, it is preferable that an alarm be issued only when the amount of received light continues to decrease for a predetermined period of time (for example, 3 seconds) or more.

〔Effect of the invention〕

The device of the invention is easy to handle and can be operated by the patient himself. Therefore,
If measurements are taken every time the dialysate is replaced, the occurrence of peritonitis can be detected early and effective treatment can be performed. Furthermore, although CAPD is a home treatment performed under the guidance of a doctor, if the device of the present invention is equipped with a turbidity display means or recorder to record data, this data can be used by the doctor in an appropriate manner. This is extremely useful as objective data when providing treatment or instructions.

The reason why the light emitting part and the light receiving part are mounted on the tube rather than the bag in the present invention is as follows.
The inner surface of the bags in commonly used CAPD sets is roughened and semi-transparent to prevent adhesion, making it impossible to measure turbidity from the outside, and the bags are not uniform in shape, making accurate measurements difficult. This is because it is difficult.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an example of the peritonitis detection device of the present invention. 1... Light emitting section, 2... Light receiving section, 3... Monitoring circuit, 4... Alarm section, 5... Tube.

Claims (1)

[Scope of Claims] 1. A peritonitis detection device for peritoneal dialysis, comprising a turbidity measuring means attached to the side of a transparent tube for discharging dialysate stored in the peritoneal cavity. 2. The device according to claim 1, wherein the turbidity measuring means comprises a light transmittance determining means. 3. The device according to claim 2, wherein the light transmittance determining means comprises a light emitting section, a light receiving section, and a received light amount monitoring circuit.