Dualis MedTech GmbH | Date: 2013-01-22
A support device for supporting a transmission coil on the body of a patient, with a receiving or securing device or a receiving space for receiving or securing the transmission coil in and/or on the support device, and further comprising a detection device for detecting a process of application, a state of application, a process of removal and/or a state of removal of the support device relative to the body of the patient. Further pertaining to a method for operating such a device.
Dualis Medtech Gmbh | Date: 2013-08-23
The invention relates to an artificial sphincter for controllably occluding a urine-carrying vessel of an incontinent patient, including a first electrically driven pump for pumping the hydraulic fluid against the force produced by the inherent elasticity of the reservoir from the hydraulic occlusion device to the elastic reservoir during normal operation, and a second emergency pump for pumping the hydraulic fluid against the force produced by the inherent elasticity of the reservoir from the occlusion device to the elastic reservoir during emergency operation, namely when said first pump does not function properly. The invention further relates to a method for controlling an artificial sphincter.
Riescher S.,University of Regensburg |
Wehner D.,Dualis Medtech GmbH |
Schmid T.,Dualis Medtech GmbH |
Zimmermann H.,Pfm Medical Titanium Gmbh |
And 3 more authors.
Journal of Biomedical Materials Research - Part B Applied Biomaterials | Year: 2014
Polyetherurethane (PEU) is in use for blood-contacted devices because of its excellent mechanical properties. However, poor hemocompatibility of the hydrophobic material required surface modification or endothelialization. To increase the biocompatibility of PEU, the polymer was coated with a titaniumcarboxonitride [Ti(C,N,O)] layer by a plasma-activated chemical vapor deposition (PACVD) process. Biocompatibility of titaniferously coated PEU was verified using static and dynamic cell culture techniques. Titaniferous coating significantly improved proliferation and mitochondrial activity of human endothelial cells on PEU. These cells captured significantly less mononuclear cells and platelets. Under shear stress for up to 72 hours, titaniferous coating increased endothelial cell adhesion, spreading, and cell density to form an organized monolayer covering the whole luminal surface of vascular PEU grafts. In summary, coating of PEU surfaces with Ti(C,N,O) might be a promising strategy to improve the biocompatibility of biomedical biomaterials. © 2013 Wiley Periodicals, Inc. Source
Lehle K.,University of Regensburg |
Li J.,University of Regensburg |
Zimmermann H.,PFM medical titanium |
Hartmann B.,PFM medical titanium |
And 3 more authors.
Materials | Year: 2014
Polycarbonateurethanes (PCU) and polyetherurethanes (PEU) are used for medical devices, however their bio- and haemocompatibility is limited. In this study, the effect of titaniferous upgrading of different polyurethanes on the bio- and haemocompatibility was investigated by endothelial cell (EC) adhesion/proliferation and platelet adhesion (scanning electron microscopy), respectively. There was no EC adhesion/proliferation and only minor platelet adhesion on upgraded and pure PCU (Desmopan). PEUs (Texin 985, Tecothane 1085, Elastollan 1180A) differed in their cyto- and haemocompatibility. While EC adhesion depended on the type of PEU, any proliferative activity was inhibited. Additional titaniferous upgrading of PEU induced EC proliferation and increased metabolic activity. However, adherent ECs were significantly activated. While Texin was highly thrombotic, only small amounts of platelets adhered onto Tecothane and Elastollan. Additional titaniferous upgrading reduced thrombogenicity of Texin, preserved haemocompatibility of Elastollan, and increased platelet activation/aggregation on Tecothane. In conclusion, none of the PUs was cytocompatible; only titaniferous upgrading allowed EC proliferation and metabolism on PEUs. Haemocompatibility depended on the type of PU. © 2014 by the authors. Source
Dualis Medtech Gmbh | Date: 2012-06-08
A portable dialysis device that can be continuously worn in and/or on the body of a patient, with a blood chamber in which the patients blood can be received, a hydraulic chamber which can be filled with a hydraulic fluid and which adjoins the blood chamber, an at least partially flexible delivery membrane which is arranged between the hydraulic chamber and the blood chamber and which, when the hydraulic chamber is filled with hydraulic fluid, is movable in the direction of the blood chamber in such a way as to cause a compression of the blood chamber and therefore an ejection of the blood located therein, a pump for controllable filling and/or emptying of the hydraulic fluid in the hydraulic chamber, such that blood can in this way be conveyed into the blood chamber and/or out of the latter, a filter membrane which is arranged between the blood chamber and the hydraulic chamber and through which waste substances in the blood can be removed to the hydraulic fluid located in the hydraulic chamber, such that the hydraulic fluid serves at the same time as dialysate. Additionally, a method for operating a portable dialysis device.