Infusion apparatus capable of measuring a fluid delivery rate taking a dead band into account
First Claim
1. An infusion apparatus including an infusion pump having a live band when a fluid transfer is effected and a dead band when no fluid transfer is effected in one operation cycle of said infusion pump and operating operating to transfer a fluid through an administration tube, said infusion apparatus comprising:
- a plurality of mark means provided at every specified angle of rotation in a specified portion of a rotary member rotating together with the infusion pump, said specified portion corresponding to the live band of the infusion pump;
mark detection means for detecting one of said plurality of mark means to output a mark detection signal; and
pump operation amount detection means for detecting an operation amount of said infusion pump in the live band by counting a number of said plurality of mark means detected by said mark detection means based on the mark detection signal output from said mark detection means,wherein a fluid delivery rate of said infusion pump is determined based on the operation amount of said infusion pump in the live band detected by said pump operation amount detection means.
1 Assignment
0 Petitions
Accused Products
Abstract
A slit disk having a hole at a specified portion of its flat surface and a plurality of slits at regular intervals at a peripheral portion thereof is mounted to a shaft of an infusion pump. A controller clears a live band determination counter based on a light detection signal from a sensor when the hole is detected, and increments the count value of a live band determination counter when an side edge of one of the plurality of slit is detected. When the count value of the live band determination counter falls within "10" to "24" or "0" to "2", it is determined that the infusion pump is in a live band, and the count value of the live band counter is incremented. Thus an operation amount of the infusion pump in the live band is detected to measure a fluid delivery rate taking a dead band into account.
67 Citations
22 Claims
-
1. An infusion apparatus including an infusion pump having a live band when a fluid transfer is effected and a dead band when no fluid transfer is effected in one operation cycle of said infusion pump and operating operating to transfer a fluid through an administration tube, said infusion apparatus comprising:
-
a plurality of mark means provided at every specified angle of rotation in a specified portion of a rotary member rotating together with the infusion pump, said specified portion corresponding to the live band of the infusion pump; mark detection means for detecting one of said plurality of mark means to output a mark detection signal; and pump operation amount detection means for detecting an operation amount of said infusion pump in the live band by counting a number of said plurality of mark means detected by said mark detection means based on the mark detection signal output from said mark detection means, wherein a fluid delivery rate of said infusion pump is determined based on the operation amount of said infusion pump in the live band detected by said pump operation amount detection means. - View Dependent Claims (2)
-
-
3. An infusion apparatus including an infusion pump having a live band when a fluid transfer is effected and a dead band when no fluid transfer is effected in one operation cycle of said infusion pump and operating to transfer a fluid through an administration tube, said infusion apparatus comprising:
-
reference mark means provided on a rotary member rotating with said infusion pump, said reference mark means representing a reference position of said rotary member; a plurality of mark means provided at specified angles of rotation on said rotary member; mark detection means for detecting said reference mark means and one of said plurality of mark means to output a reference mark detection signal and a mark detection signal; counter means, whose count value is cleared based on the reference mark detection signal and incremented based on the mark detection signal; live band determination means for determining that said infusion pump is in the live band based on the count value of said counter means; and pump operation amount detection means for detecting an operation amount of said infusion pump by counting said plurality of mark means detected in the live band based on the mark detection signal output from said mark detection means in the live band, wherein a fluid delivery rate of said infusion pump is determined based on the operation amount of said infusion pump in the live band detected by said pump operation amount detection means. - View Dependent Claims (4, 5, 6)
-
-
7. An infusion apparatus comprising:
-
fluid means, including an infusion pump, for delivering a fluid at a fluid delivery rate in an operation cycle, the operation cycle including a live band and a dead band; detection means for detecting the dead band; and correction means for correcting the fluid delivery rate of said fluid means based on the dead band detected by said detection means. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
-
-
15. An infusion method comprising the steps of:
-
delivering a fluid at a fluid delivery rate in an operation cycle of an infusion pump, the operation cycle including a live band and a dead band; detecting the dead band; and correcting the fluid delivery rate of the infusion pump based on the detected dead band. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
-
Specification