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Patient monitoring and data processing system

  • US 3,925,762 A
  • Filed: 10/25/1973
  • Issued: 12/09/1975
  • Est. Priority Date: 10/25/1973
  • Status: Expired due to Term
First Claim
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1. A patient monitoring and data handling system for use with hospitalized patients, comprising:

  • a. a plurality of data sending units for being placed in the vicinity of a hospitalized patient and having means for producing digital data words representative of information pertinent to a patient and a plurality of data receiving units for being placed in the vicinity of said patient and having means for receiving digital words pertinent to monitoring a patient, each of said digital words being assigned to a particular time slot in a sequence of time slots, b. first data bus means having a conductor for each bit in a data word to permit parallel transmission of the bits comprising a word, c. means for connecting said sending and receiving units, respectively, to said data bus, said last named means each including gate means and gate enabling means associated with each sending and receiving unit for selectively transmitting data words between an associated sending unit and said data bus and between said data bus and an associated receiving unit when gate means associated with a sending unit and gate means associated with a receiving unit are simultaneously enabled in time correspondence with occurrence of a time slot to which the word to be transmitted is assigned, d. a source of constant rate clock pulses, said clock pulses corresponding with said sequence of time slots, e. means for generating a sync pulse signal in response to occurrence of repeatable numbers of clock pulses, f. pulse counting means associated with each sending and receiving unit and each counting means responding to occurrence of each sync pulse signal by simultaneously initiating counting of clock pulses and continuing to count selected predetermined numbers of ensuing clock pulses so that a counting means associated with at least one of said receiving units reaches its predetermined number of counts in coincidence with counting means associated with at least one sending unit reaching its predetermined number of counts between which units data assigned to a time slot corresponding with occurrence of said coincidence may be exchanged, g. the said gate means associated with the said ones of said sending and receiving units, respectively, being enabled to respond to said coincidence for said transmitting of said data words and other of said gate means for words assigned to other time slots being enabled sequentially in response to other coincidences at predetermined times whereby respective sending units operate synchronously with receiving units that are intended to receive data from said sending units.

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