Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1997-12-11
2000-02-22
McDermott, Corrine
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604533, 604539, A61M 2500
Patent
active
060274891
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a device for the connection in a sterile environment of a peritoneal catheter to a tube for draining or feeding dialysis liquid.
Among the peritoneal dialysis techniques for the treatment of uraemic patients, continuous ambulatorial peritoneal dialysis (CAPD) is of great importance.
This technique, devised in 1975, consists in connecting a plastic container with approximately two liters of a dialysis liquid (a solution with added glucose normally isosmotic with plasma) to a peritoneal catheter permanently attached to the patient, by means of a short plastic tube with appropriate connectors at its two ends. After connection, the dialysis liquid fills the peritoneal cavity, where the blood which surrounds the peritoneal membrane exchanges the substances present in the aqueous phase and transfers the uraemic toxins to the dialysis liquid. After an appropriate space of time, the peritoneal cavity is emptied by connecting a drain tube to the peritoneal catheter.
For effective depuration of the patient, the aforementioned procedure has to be repeated daily at least four times during the day. This exposes the patient to the risk that, during the manoeuvres for permanent catheter connection to the drain tube first, in order to empty the peritoneal cavity of the liquid which is not full of toxins, and to the bag subsequently, so as to fill the peritoneal cavity with clean dialysis liquid, pathogenic agents may be introduced into the peritoneal cavity, causing the onset of bacterial peritonitis.
In view of the state of the art described, the object of the present invention is that of providing a device which enables the connection in a sterile environment of the peritoneal catheter to the drain tube first and to the feed tube for dialysis liquid subsequently, in order to reduce to a minimum the possibility during these operations of pathogenic agents being introduced into the peritoneal cavity.
In accordance with the present invention, this object is achieved thanks to a device for the connection in a sterile environment of a peritoneal catheter, permanently attached to a patient, to a drain tube or feed tube for a dialysis liquid, characterised in that it comprises a shell wherein a first chamber and a second chamber are formed, which chambers are suitable for being filled with a disinfecting liquid, and a connection channel which connects the two chambers one to the other. Respective coupling means are also provided in each chamber for coupling, in conditions of immersion in the disinfecting liquid, to said peritoneal catheter and said drain tube or said feed tube respectively, to form via said connection channel a sealed connection between said catheter and said drain tube or said feed tube.
Thanks to the device according to the present invention, the peritoneal catheter may be connected either to the drain tube or to the feed tube in a totally sterile environment, in that coupling of the peritoneal catheter, of the drain tube and of the feed tube to the coupling means provided in the chambers filled with disinfecting liquid takes place in conditions of immersion in the disinfecting liquid itself.
Preferably, said shell is also provided with an additional pair of chambers, also connected one to the other and to the chambers of the first pair in order to be also filled with said disinfecting liquid, each chamber of said second pair being suitable for holding, in conditions of immersion in the disinfecting liquid, a cap for closing said peritoneal catheter and said feed tube. In this way, the operations of removing the closure caps normally provided at the ends of the peritoneal catheter and of the feed tube may be performed in a fully sterile environment.
These and other features and advantages of the present invention will be made clearer from the following detailed description of two of its embodiments, illustrated by way of non-limiting examples in the accompanying drawings, in which:
FIG. 1 is a view sectioned along a vertical plane of a device according to a first embodiment o
Gring Kent
Haemopharm Industry AG
McDermott Corrine
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