Infusion apparatus able to recognize an appropriate time for servicing

• US 5,304,127 A
• Filed: 04/02/1993
• Issued: 04/19/1994
• Est. Priority Date: 04/03/1992
• Status: Expired due to Term

• Current Assignee: Baxter International Inc., Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Baxter International Inc., Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Callaghan, Thomas, Matthews, Joseph B., Kawahara, Masafumi
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): CERMAK, ADAM
• Application Number:
  US08/042,014
• Time in Patent Office: 382 Days
• Field of Search: 604/65-67, 604/151-155, 128/DIG. 12, 128/DIG. 13
• US Class Current: 604/65
• CPC Class Codes: A61M 2205/702 automatically during use
• CPC Class Codes: A61M 5/172 electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: Y10S 128/13 Infusion monitoring

Abstract

An infusion apparatus is provided with a clock, a power-on-time counter for counting a period of time in which power is supplied to the infusion apparatus from an AC power source or a backup battery for backing up the AC power source, a pump-on-time counter for counting a period of time in which a pump mechanism operates, and a battery-on-time counter for counting a period of time in which power is supplied to the infusion apparatus from the backup battery. A CPU displays a time value counted by the counters on a display unit. The time value displayed on the display unit indicates the degree of deterioration of charge capability of the backup battery, from which a time for replacing the backup battery and the other parts can be easily perceived.

Claims

1. An infusion apparatus which is operated on alternating current power source and includes a pump mechanism for transferring a fluid through an administration tube by repetitively pressing a portion of the administration tube in a peristaltic manner in a direction of transferring the fluid and a battery for backing up the alternating current power source, the infusion apparatus comprising:

first clock means for clocking a period of time in which power is supplied to the infusion apparatus from the alternating current power source or the battery for backing up the alternating current power source;

first storage means for storing the period of time clocked by the first clock means;

second clock means for clocking a period of time in which power is supplied to the infusion apparatus from the battery;

second storage means for storing the period of time clocked by the second clock means;

third clock means for clocking a period of time in which the pump mechanism operates;

third storage means for storing the period of time clocked by the third clock means;

display means; and

means for calling up the period of time stored in each of the first, second and third storage means to display the period of time on the display means.

2. The infusion apparatus as claimed in claim 1, wherein the first clock means and the first storage means are constituted of a power-on-time counter;

the second clock means and the second storage means are constituted of a battery-on-time counter; and

the third clock means and the third storage means are constituted of a pump-on-time counter.

3. The infusion apparatus as claimed in claim 2, further including a random access memory, said random access memory including the power-on-time counter, the battery-on-time counter, and the pump-on-time counter.

4. The infusion apparatus as claimed in claim 3, further including a battery other than said battery for backing up the alternating current power source, said random access memory operating on said other battery.