Programmable infusion pump

• US 5,000,739 A
• Filed: 07/12/1988
• Issued: 03/19/1991
• Est. Priority Date: 07/12/1988
• Status: Expired due to Fees

• Current Assignee: Pinewood Medical Incorporated
• Original Assignee: Pinewood Medical Incorporated
• Inventors: Williams, Jeffrey, Kulisz, Andrzej, Kendig, Robert
• Primary Examiner(s): Pellegrino Stephen C.
• Application Number:
  US07/218,110
• Time in Patent Office: 980 Days
• Field of Search: 604/246, 604/132, 604/153, 604/154, 604/155, 604/131, 604/133, 604/403, 604/216, 128/DIG. 12, 128/DIG. 13, 222/386.5, 222/390, 222/333, 222/206, 222/215
• US Class Current: 604/132
• CPC Class Codes: A61M 2005/1405 Patient controlled analgesia [PCA]
• CPC Class Codes: A61M 39/10 Tube connectors; Tube couplings A61M39/02 takes precedence; connecting needles to syringes or hubs A61M5/34; connecting catheter tubes to hubs A61M25/0014
• CPC Class Codes: A61M 5/148 flexible, e.g. independent bagsA61M5/155 takes precedence
• CPC Class Codes: Y10S 128/12 Pressure infusion

Abstract

A programmable pump with three separate components: a driver, a reservoir and a tubing set connector. The driver provides an electromechanical assembly causing fluid to flow from the reservoir. The driver can be programmed for varying flow rates and alternating on/off delivery cycles through the control of switches externalized on the driver face. The reservoir is designed as a separate component. The driven side of the reservoir is the bottom. The top of the reservoir includes a port, and the bottom includes a septum for filling by a needle. The tubing set connector subsequently mounts into the port connector of the reservoir. The tubing set connector provides the interface to any standard luer-type tubing set which then connects to a needle for infusion. The circuitry is hardware logic programmable circuitry.

Claims

1. A pump comprising:

a. a reservoir including folding bellows and a threaded aperture in a top of said reservoir for receiving a drug;

b. a catheter connector with threads for screwing into said threaded aperture of said reservoir;

c. a housing for respectively receiving said reservoir and said connector and including a door;

d. an actuator motor in said housing and including an upwardly advancing shaft powered by the actuator motor and which provides force at one end of the reservoir to compress said reservoir; and

,

e. control means connected between a power supply and said actuator motor for controlling operation of said actuator motor.

2. Pump of claim 1 wherein each fold of said bellows is compressed at the same rate when a force is applied by said shaft.

3. Pump of claim 1 including teeth means about said reservoir aperture and on said catheter connector to lock said catheter connector to said reservoir.

4. Pump of claim 3 wherein said means of locking said catheter connector to said reservoir includes N+1 flexible teeth on said catheter connector and N fixed teeth on said reservoir whereby the teeth ratchet over each other providing that the catheter connector cannot be unscrewed.

5. Pump of claim 1 including locking means for said door.

13. Pump of claim 1 further including:

a. a cradle for said pump housing, said cradle including a plurality of magnets; and

,

b. a plurality of magnetically activated switches in said housing connected to said control means whereby said switches must be closed by said magnets for programming one mode of said control means when said housing engages in said cradle.

6. Pump of claim wherein said control means includes means to control the rate at which said actuator motor linearly advances said shaft, the time said actuator motor is on, and the time said actuator motor is off.

7. An infusion pump of claim 6 including means to select different modes of drug delivery.

8. Pump of claim 7 wherein said mode is tPA.

9. Pump of claim 7 wherein said mode is PCA.

10. Pump of claim 7 wherein said mode is general purpose.

11. Pump of claim 6 wherein said selection to select different modes of operation of said control means is located inside the housing.

12. Pump of claim 11 where there is a means of setting the rate of the actuator motor, the time on of the actuator motor and the time off of the actuator motor, and a reset switch which are all accessible on the outside of the infusion pump housing.

14. Collapsible drug reservoir comprising:

a. a container of substantially rectangular shape with a plurality of side wall bellows therein including a septum in a bottom of said container; and

,

b. a threaded aperture with connector means in a top of said aperture and a locking means about said threaded aperture.

15. In combination, a drug reservoir and connector comprising:

a. a container with a plurality of side wall bellows therein, a threaded aperture in a top of said container, a locking means about said aperture; and

,

b. a catheter connector with threads and a corresponding locking means about said connector to engage with said aperture locking means.

16. Combination of claim 15 wherein said locking means are n locking teeth, and wherein either of said locking means includes n+1 teeth with respect to n teeth of said other locking means.

17. Combination of claim 15 wherein said locking means provides sterility between said reservoir and said connector.

18. Combination of claim 15 wherein said connector includes a breakaway top.

19. Drug pump comprising:

a. a driver and motor means including means for linearly advancing a shaft upwardly;

b. a reservoir including a plurality of bellows, means for accepting said shaft and an aperture means;

c. catheter connector means to engage with said aperture means to a catheter;

d. hardware discrete logic control means connected between said motor means and a power supply means; and

,

e. switch means connected to said hardware discrete logic control means to program said hardware discrete logic control means.