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:
Feb. 24, 1981
Filed:
Aug. 29, 1979
Jan Soderstrom, Cary, IL (US);
Baxter Travenol Laboratories, Inc., Deerfield, IL (US);
Abstract
There is disclosed herein a negative pressure dialysis machine which includes a negative pressure valving system and transmembrane pressure alarm system. An electromagnetically controlled flapper valve is disclosed herein for use as a negative pressure control valve. The flapper valve permits accurate control of negative pressure and changes in negative pressure to be affected rapidly. Transmembrane pressure alarm systems are provided which detect the difference in pressure between the blood and dialysate in the dialyzer and activate alarms and prevent dialysis (a) if the dialysate pressure exceeds the blood pressure and/or (b) if a blood pressure signal is not received which would permit actual transmembrane pressure to increase beyond a predetermined limit.