Heartbeat data acquisition conversion and display system

US4125111A · kind A · utility

Assignee

• United States Surgical Corporation · US

Inventors

• Emmett L. Hudspeth · Austin, US
• Philip C. Richardson · Austin, US
• John L. Neathery, Jr. · Austin, US
• Jerald P. Dykstra · Austin, US
• Allen D. Boger, Jr. · Austin, US
• William B. Sims, Jr. · Austin, US
• Glenn E. Hunt · Austin, US
• Tony Quisenberry · Meadowlark Drive, US

Key dates

• Filing date: Jul 12, 1976
• Grant date: Nov 14, 1978
• Expiry date: Jul 12, 1996

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2560/0456
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Heartbeat data is measured and converted into a series of electrical output pulses, the frequency of which is related to the heartbeat pulse rate. The output pulses trigger "on" and "off" a timing device, and the average time of a heartbeat cycle is then converted into a heartbeat pulse rate and displayed. The timing device includes a means for delaying a first specified number of output pulses before beginning the sampling period and registering a count of clock pulses which represents the time period of a second specified number of the output pulses occurring subsequently to the first specified number of output pulses.