Abstract: A drug supply system for CED (convection-enhanced delivery) catheter infusions is provided, the system including a drug conducting system having a drug depot and a catheter supply line and a conveying device that provides for conveying the drug from the drug depot into the catheter supply line. The drug conducting system is a system that is closed to the outside in a fluidic seal The drug supply system further includes a conveying fluid conveying system arranged between the conveying device and the drug supply system and is connected to the conveying device and to the drug depot, via a drug displacement element, without fluid-drug contact.

Abstract: A catheter for administering a substance into body tissues includes an elongated catheter body that has at least one portion of the length of the catheter body that expands after the catheter is inserted in the patient's body. The portion that expands provides a seal against backflow of the substance along the outer surface of the catheter body and away from the intended treatment area.

Abstract: The invention relates to a catheter stylet for stiffening a catheter during the placing process, wherein the stylet comprises an accommodating lumen for at least one fluid-guiding line of the catheter. It also relates to a catheter stylet catheter system, comprising such a stylet and comprising a catheter which comprises a fluid-guiding line, and to a method for stiffening a catheter during the placing process, wherein a stylet which comprises an accommodating lumen is arranged around at least one fluid-guiding line of the catheter.

Abstract: The invention relates to a drug supply system for CED (convection-enhanced delivery) catheter infusions, comprising: a drug conducting system which comprises a drug depot and a catheter supply line; and a conveying device which provides for conveying the drug from the drug depot into the catheter supply line; wherein the drug conducting system is a system which is closed to the outside in a fluidic seal, and wherein a conveying fluid conveying system is arranged between the conveying device and the drug supply system and is connected on the one hand to the conveying device and on the other to the drug depot, via a drug displacement element, without fluid-drug contact.

Abstract: A catheter for administering a substance into a patient's tissue including a number of pressure sensors for detecting changes in the shape of the catheter or a backflow along the surface of the catheter. In response to the pressure distribution profile collected along the surface or length of the catheter, the physician may simulate or adapt the substance administration plan to accommodate the actual position of the catheter or the backflow along the surface of the catheter.

Abstract: A catheter for administering a substance into a patient's tissue includes an elongated catheter body surrounding a lumen. At least one part of the length of the catheter body includes a material that changes its stiffness due to changes in the ambient conditions in the administering environment.

Abstract: A catheter for administering a substance into body tissues includes an elongated catheter body that has at least one portion of the length of the catheter body that expands after the catheter is inserted in the patient's body. The portion that expands provides a seal against backflow of the substance along the outer surface of the catheter body and away from the intended treatment area.