The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 1997
Filed:
Apr. 26, 1994
Manfred Baumann, Schweinfurt, DE;
Helmuth Ender, Zeil, DE;
Fresenius AG, Bad Homburg, DE;
Abstract
A hemodialysis apparatus is supplied with dialysis fluid or a dialysis fluid component through a supply loop conduit 12. A shut-off device 22, such as a magnetic valve, is arranged between the apparatus and the supply conduit 12. A buffer volume is enclosed between the shut-off device and an additionally arranged shut-off device such as a non-return valve. During disinfection of the apparatus, in order to prevent disinfecting fluid from flowing back into the supply loop conduit and therewith an endangering other dialysis apparatus connected to the same supply loop conduit, in the event that the shut-off device 22 leaks, the buffer volume is pressurized to a defined pressure, which is preferably higher than the pressure in the surrounding conduit sections. This pressure is detected by a pressure sensor P. The signal generated by the pressure sensor P is monitored by a microprocessor 28. Preferably, the pressure necessary in the buffer volume is generated by a pump 36, which is already present in state of the art dialysis apparatus. In this context, the invention also provides for a suitable switching valve arrangement.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile