Abstract: A shoelace retainer including a strip of loop-type fastening material that has been folded back upon itself near its midpoint and seamed in place so as to form a small tab. The tab is perforated so as to provide the strip of loop-type fastening material with an attachment ring. Adjacent the ring at one end of the strip of loop-type fastening material is attached a patch of hook-type fastening material.

Abstract: A shoelace retainer including a strip of loop-type fastening material that has been folded back upon itself near its midpoint and seamed in place so as to form a small tab. The tab is perforated so as to provide the strip of loop-type fastening material with an attachment ring. Adjacent the ring at one end of the strip of loop-type fastening material is attached a patch of hook-type fastening material.

Abstract: An ambulatory cardiac monitoring system (10) to event record and monitor ECG signals (20) from a patient (12) for a predetermined time interval. The ambulatory cardiac monitoring system (10) includes a recorder system (18) which is carried by the patient (12). The recorder system (10) is coupled to the patient through leads (16) and electrodes (14) positionally located contiguous to the patient (12). The recorder system (18) includes an analog pre-processor (32), a first microcomputer (34) coupled in a feedback manner to analog pre-processor (32), and a cassette recorder (38). The analog pre-processor (32) has incorporated both automatic gain control and conditioning circuitry that normalizes and filters the basic ECG signal (20). The analog pre-processor (32) produces a plurality of extraction signals which are input to microcomputer (34).