Infusion pump and a method for infusing patients using same

• US 5,395,340 A
• Filed: 03/15/1993
• Issued: 03/07/1995
• Est. Priority Date: 03/15/1993
• Status: Expired due to Fees

• Current Assignee: Tzium-Shou Lee
• Original Assignee: Tzium-Shou Lee
• Inventors: Lee, Tzium-Shou
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): VANOVER, PERRY
• Application Number:
  US08/031,524
• Time in Patent Office: 722 Days
• Field of Search: 128/DIG. 12, 128/DIG. 13, 604/65, 604/66, 604/67, 604/151, 604/246, 417/44
• US Class Current: 604/151
• CPC Class Codes: A61M 2205/70 with testing or calibration facilities
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: Y10S 128/13 Infusion monitoring

Abstract

An improved infusion pump and a method for infusing patients using same. The infusion pump is modified to utilize a plurality of different drugs, each formulated at a mean effective dosage and toxicity level such that the infusion rate is the same for the drugs. More specifically, the control means of the infusion pump has a single drug label plate affixed to the pump and adjustable controls which are used in setting the mean effective dosage of the drug to be infused, the body weight of the patient to be infused, and the bolus or initial dosage of the drug to be infused. The method of the present invention comprises preparing the formulation of the plurality of different drugs, each at a mean effective dosage and, in combination with the infusion pump of the invention, infusing the drugs into patients at the same rate.

Claims

1. An infusion pump for the infusion of drugs into patients, comprising:

drug means comprising a plurality of different drugs, each formulated at a mean effective dosage for infusion at the same rate;

a reservoir means for holding a selected one of said different drugs of said drug means;

a pump means for transferring the one drug from the reservoir means through the pump means and into a patient;

a control means for said pump means for controlling the volumetric rate of transferring the drug means from the pump means into the patient, said control means comprising a single drug label affixed to said pump means, external dial members on the pump means for affecting the volumetric rate, and indicia means for indicating a relative position of each of the dial members relative to the single drug label plate, and said indicia means including indicia indicating one position of one of the dial members at which the pump volumetric rate is equal to one mean effective dosage and other indicia indicating multiples or fractions thereof; and

an intravenous delivery means for communicating the drug means from the pump means into the patient.

2. The infusion pump of claim 1, wherein the drug means is an anesthetic.

3. The infusion pump of claim 1, wherein the indicia means are located on the dial members.

4. The infusion pump of claim 1, wherein the indicia means are located on the single drug label plate.

5. The infusion pump of claim 1, wherein the indicia means indicates the position of one of the dial members at which the body weight of the patient is indicated.

6. The infusion pump of claim 1, wherein the indicia means indicates one position of one of the dial members at which the bolus dosage is equal to one mean effective bolus and where other indicia indicate multiples or fractions thereof.

7. A method for infusing drugs into a patient, comprising the steps of:

a) preparing a plurality of different drugs, each formulated at a mean effective dosage for infusion at the same rate;

b) providing an infusion pump having adjustable controls for setting the volumetric delivery rate of the pump with one control having setting indicia based on mean effective dosage, a second control having setting indicia based on patient body weight, and a third control having setting indicia based on mean effective bolus;

c) adjusting the adjustable control to the desired ratio of the mean effective dosage;

d) adjusting the second control to indicate the body weight of the patient;

e) adjusting the third control to indicate the desired ratio of the mean effective bolus; and

f) infusing the drug into the patient.

8. The method of claim 7, wherein a multiple of the mean effective dosage is infused into the patient.

9. The method of claim 7, wherein a fraction of the mean effective dosage is infused into the patient.

10. The method of claim 7, wherein a multiple of the mean effective bolus is infused into the patient.

11. The method of claim 7, wherein a fraction of the mean effective bolus is infused into the patient.