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:
Nov. 13, 1990
Filed:
Oct. 04, 1989
Werner Mohl, Vienna, AT;
Marc J Tolkoff, Brookline, MA (US);
Boston Scientific Corporation, Watertown, MA (US);
Abstract
The coronary sinus is intermittently occluded by use of means for occluding the sinus, a pressure transducer for sensing the fluid pressure within the sinus and providing corresponding fluid pressure signals, and a controller responsive to the transducer and arranged to provide trigger signals to the occluding means to trigger an occlusion and to interrupt the occlusion, the system being characterized in that the controller is arranged to estimate a plateau level of the fluid pressure during each occlusion and for providing a trigger signal to interrupt each occlusion on the basis of the estimate. The duration of the interruption before the next occlusion is controlled in response to the volume flow in the sinus during the interruption. Pharmacological agents are injected into the sinus during the occlusion, for retroperfusion to the heart tissue. An analysis of heart function is obtained by analyzing the local pressure maxima in successive heartbeats during occlusion. Initiation of the next occlusion is timed based on fluid pressure signals taken from the sinus during occlusion. The degree of tissue at risk of infarction (or the amount of infarcted tissue) is estimated based on the fluid pressure signals.