Multiple dose control apparatus

• US 5,221,268 A
• Filed: 12/06/1991
• Issued: 06/22/1993
• Est. Priority Date: 12/06/1991
• Status: Expired due to Term

• Current Assignee: I-Flow Corporation (Kimberly-Clark Corporation)
• Original Assignee: Block Medical, Inc. (Kimberly-Clark Corporation)
• Inventors: Bunn, Charles N., Milo, Maresala, Barton, Russell C.
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): Gutowski, Anthony
• Application Number:
  US07/804,837
• Time in Patent Office: 564 Days
• Field of Search: 604/65, 604/67, 604/132, 604/153, 604/246, 604/249, 604/250, 128/DIG. 13, 251/4, 251/7
• US Class Current: 604/250
• CPC Class Codes: A61M 5/16813 by controlling the degree of opening of the flow line

Abstract

A multiple dose infusion controller for controlling the delivery of multiple dosages of an intravenous fluid from a source to a site comprises a compact, portable housing having a slot for removably receiving a segment of a disposable tubing connected to an IV source for transporting an IV fluid to a site, a valve member mounted in the housing for periodically engaging and compressing the tubing for closing the tubing for preventing flow of fluid therethrough, a motor in the housing for driving the valve member upon energization to selected open and closed positions, and controls in the housing for periodically energizing the motor for selectively controlling the flow of the fluid through the tubing in accordance with predetermined delivery times and duration parameters.

Claims

1. A multiple dose infusion controller for controlling the delivery of multiple dosages of an intravenous fluid from a source to a site, comprising:

a compact, portable housing having a receptacle slot extending across a face thereof for removably receiving a segment of a disposable tubing means connected to an IV source for transporting an IV fluid to a site;

occlusion valve means mounted in the housing and including a valve member moveable between open and closed conditions, said valve member moveable to said closed condition for periodically engaging and compressing the segment of the disposable tubing means for closing said tubing for selectively preventing flow of fluid therethrough;

power means mounted in the housing for driving the valve member upon energization thereof to a selected one of said open and closed conditions; and

control means mounted in the housing programmed for providing multiple selected dosage modes separated by a keep vein open mode over a selected period of time for said modes provided by periodically energizing the power means for selectively starting and stopping the flow of the fluid through the disposable tubing means in accordance with predetermined delivery time and duration parameters for each selected dosage mode and momentarily opening and closing said valve at selected time intervals for said keep vein open mode over a selected period of time between said infusion modes.

2. An infusion controller according to claim 1 wherein said valve member is a finger mounted for reciprocation transverse to the axis of the slot and extends through a side wall thereof.

3. An infusion controller according to claim 2 wherein said slot includes a platen extending outward from a wall opposite said finger.

4. An infusion controller according to claim 2 wherein said power means comprises a rotary motor having a rotary shaft, an eccentric on said shaft drivingly connected to said finger by means of a yoke on said finger.

5. An infusion controller according to claim 1 further comprising an elastic segment of a disposable tubing removably disposed in said receptacle slot.

6. An infusion controller according to claim 5 wherein said valve member is a finger mounted for reciprocation transverse to the axis of the slot and extends through a side wall thereof.

7. An infusion controller according to claim 6 wherein said slot includes a platen extending outward from a wall opposite said finger.

8. An infusion controller according to claim 7 wherein said power means comprises a rotary motor having a rotary shaft, an accentric on said shaft in driving engagement with a yoke on said finger.

9. An infusion controller according to claim 8 wherein said eccentric includes high lift and low lift spots and flat surfaces at the high lift and low lift spots of said eccentric, and biasing means for biasing said yoke against said surfaces for latching said finger in a selected one of an open and a closed condition.

10. A multiple dose infusion controller for selectively delivering multiple dosages of an intravenous fluid from a source to a patient, comprising:

disposable tubing means connected at one end to a source of IV fluid and having means at the other end for connection to an injection site of a patient for conveying intravenous fluid from a source to a patient, said tubing means having an intermediate elastic segment;

a compact, portable housing having an open receptacle slot extending across a face thereof for removably receiving said elastic segment of said disposable tubing means;

reciprocating finger means mounted in the housing for periodically engaging and compressing the elastic segment of the disposable tubing means for closing said tubing for preventing flow of fluid therethrough, thereby providing fully open and fully closed conditions of said tubing;

motor means mounted in the housing for driving the finger means to a selected one of fully open and fully closed conditions upon energization thereof; and

control means mounted in the housing and programmed for providing multiple selected dosage modes separated by a keep vein open mode over a selected period of time, said modes provided by controllably energizing the motor means for selectively controlling the flow of the fluid through the disposable means in accordance with predetermined delivery time and duration parameters for each selected dosage mode and momentarily opening and closing said valve at selected time intervals for said keep vein open mode over a selected period of time between said dosage modes.

11. An infusion controller according to claim 10 wherein said power means comprises a rotary motor having a rotary shaft, an eccentric on said shaft in driving engagement with a yoke on said finger.

12. An infusion controller according to claim 11 wherein said eccentric includes high and low lift spots and flat surfaces at the high lift and low lift spots of said eccentric, and biasing means for biasing said yoke against said surfaces for latching said finger in a selected one of an open and closed condition.

13. An infusion controller according to claim 12 wherein said control means includes keypad means mounted in the housing for enabling the user to send commands to the control means.

14. A multiple dose infusion system having a controller for selectively delivering multiple dosages of an intravenous fluid from a source to a patient, comprising in combination:

an inflatable bladder infusion apparatus for containing an IV fluid under pressure;

disposable tubing means connected at one end to said infusion apparatus and having means at the other end for connection to an injection site of a patient for conveying intravenous fluid from said infusion apparatus to a patient, said tubing means having an intermediate elastic segment;

a compact, portable housing having an open receptacle slot extending across a face thereof for removably receiving said elastic segment of said disposable tubing means;

reciprocating finger means mounted in the housing for periodically engaging and compressing the elastic segment of the disposable tubing means for closing said tubing for preventing flow of fluid therethrough;

a rotary motor having a shaft mounted in the housing, and an eccentric on said shaft in driving engagement with a yoke on said finger for driving the finger upon energization thereof selectively into and out of engagement with the elastic segment for defining closed and open conditions of said elastic segment, said eccentric includes high and low lift spots and flat surfaces at the high lift and low lift spots of said eccentric, and a compression spring biasing said yoke against said surfaces for latching said finger in a selected one of an open and a closed condition; and

control means mounted in the housing for controllably energizing the motor means for selectively opening and closing said elastic segment for controlling the flow of the fluid through the disposable means in accordance with predetermined delivery time and duration parameters for providing multiple selected dosage modes separated by a keep vein open mode.