United States Patent 19 11) Patent Number: 4,751,726 Hepp Et Al
United States Patent 19 11) Patent Number: 4,751,726 Hepp et al. (45) Date of Patent: Jun. 14, 1988 3,885,552 5/1975 Kennedy ............................. 128/904 (54) EKG TELEMETRY BASE STATION 4,004,577 1/1977 Sarnoff ... ... 128/904 75) Inventors: Dennis G. Hepp, Coon Rapids; Paul 4,173,971 1/1979 Karz ..... ... 128/904 J. Beckmann, St. Paul; Thomas C. 4,428,381 1/1984 Hepp ................................... 128/904 Evans, Fridley; Robert A. Neumann; Maynard J. Hoffman, both of Blaine; Primary Examiner-James L. Dwyer Thomas L. Jirak, Plymouth, all of Attorney, Agent, or Firm-Kinney & Lange Minn. 57 ABSTRACT 73 Assignee: Futurecare Systems, Inc., A telemetry base station for use in a system also includ Minneapolis, Minn. ing a patient worn EKG monitor and transmitter, and a physician monitoring station. The base station is micro (21) Appl. No.: 838,997 processor controlled, and includes a receiver for receiv 22 Filed: Mar. 10, 1986 ing FM EKG transmissions from the patient transmit 51 Int. Cl'............................................ HO4M 11/00 ter, an A to D converter, a conventional telephone set, 52 U.S. Cl. ........................................ 379/93; 379/38; used as an intercom to communicate with the physician, 379/106 and a data modem which is used for digitized transmis 58 Field of Search ............ 179/2A, 2 DP; 128/904, sions of the EKG signals. Base station functions includ 128/903; 379/93, 97,98, 104, 106, 38 ing selection of data or voice transmission are con trolled by a physician monitoring station. The base (56) References Cited station includes simulated telephone ringing functions U.S.
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