Apparatus and method for indirect blood pressure determinations

• US 3,230,950 A
• Filed: 10/17/1961
• Issued: 01/25/1966
• Est. Priority Date: 10/17/1961
• Status: Expired due to Term

• Current Assignee: Marvin A. Buffington
• Original Assignee: Marvin A. Buffington
• Inventors: Buffington, Marvin A.
• Application Number:
  US04/145,698
• Time in Patent Office: 1,561 Days
• US Class Current: 600/493
• CPC Class Codes: A61B 5/022 by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
• CPC Class Codes: A61B 5/30 Input circuits therefor
• CPC Class Codes: A61B 5/333 Recording apparatus specially adapted therefor

Claims

1. IN A SYSTEM FOR PROVIDING A DISPLAY OF INFORMATION RELATING TO THE PHENOMENA OF AN ANIMATE OBJECT, SIGNAL DETECTOR MEANS INCLUDING MEANS OPERATIVE TO GENERATE A FIRST SET OF SIGNALS RELATED TO THE PULSE OF SAID OBJECT, PRESSURE MEASURING MEANS INCLUDING A CUFF FOR SAID OBJECT, AND MEANS OPERATIVE TO PROVIDE A SECOND SET OF ELECTRICAL SIGNALS RELATED TO THE CUFF PRESSURE APPLIED TO THE OBJECT, A DISPLAYED UNIT INCLUDING RECORDER MEANS FOR PROVIDING A SEPARATE TRACE ON A COMMON TIME BASE FOR EACH DIFFERENT SET OF ELECTRICAL SIGNALS WHICH ARE SIMULTANEOUSLY COUPLED THERETO, AND MEANS FOR SIMULTANEOUSLY COUPLING SAID FIRST AND SAID SECOND SET OF ELECTRICAL SIGNALS TO SAID RECORDER MEANS TO PROVIDE A SEPARATE PULSE AND PRESSURE INFORMATION ON A COMMON TIME BASE.