Internal device for injection and sampling of a liquid inside a living organism

摘要

The invention concerns a device to inject and/or to take a sample, with the aid of a needle, of a liquid inside the organism of a living being, through the skin in a repeated manner.;More particularly, the present invention concerns a device intended to be implanted inside a living, human or animal organism, presenting a vascular system and a skin, to exchange a liquid with the vascular system, through the skin and in a repeated manner, using a needle, the aforementioned device including at least a first tubular puncture site, shaped to be able to be perforated numerous times over all its length, the tubular puncture site being linked up in a watertight manner with a flexible link conduit with the vascular system, the tubular puncture site including an watertight flexible tubing, supported by reinforcement constituted by rigid rings, this being shaped to allow the puncture site to lose its shape to follow the body movements of the patient without causing discomfort.;The present invention also concerns a system of dialysis including such a device.

主权项

1. A device intended to be implanted inside a living, mammalian organism, presenting a vascular system and skin, to exchange a liquid with the vascular system through the skin and in a repeated manner using a needle, the device including at least a first tubular puncture site including:
a watertight flexible bendable tubing, having a length of between 4 cm and 15 cm and being shaped to be perforated numerous times over all said length, the flexible bendable tubing being supported by a reinforcement consisting of rigid individual rings to allow the puncture site to change shape to follow the body movements of the organism without causing discomfort, the flexible bendable tubing being linked up to the vascular system in a sealed manner with a flexible link conduit, the flexible link conduit having an external diameter smaller than an external diameter of the flexible tubing, the diameter of the flexible link conduit and a length of the flexible link conduit being such that the flexible link conduit is insertable into a vessel of the vascular system over a depth of at least 2 to 4 cm, and the flexible link conduit being without reinforcement.