US4807170A
Expired / Lapsed
US
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Drug dose rate calculator
Assignee: Phase Medical Inc
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Filing: 1986-03-25
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Granted: 1989-02-21
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Expires: 2006-03-25
Abstract
Abstract A drug dosage calculation system includes a hand held, battery operated computing device for use by nurses and other clinical personnel to make calculations pertaining to the drug administration rate and the corresponding flow rate settings of IV systems that are used for intravenous administration of fluids to a patient. Flow rate setting, drug dose rate, drug amount and the amount of IV solution into which the drug is diluted are the primary variables used in such calculations. A keyboard is used to supply data to a computation device that computes the unknown quantity. A display device displays the data input to the computer and also displays data calculated for the unknown variable.
Inventors
- 👤 John Kulli
- 👤 Thomas M. Mitchell
- 👤 Arthur E. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:56
CPC Classifications
G; G06; G06F; G06F15/00; G06F15/02; G06F15/025; G16; G16H; G16H20/00; G16H20/10; G16H20/17; A; A61; A61M; A61M2209/00; A61M2209/04
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
120 words
A system for intravenously administering a drug dosage to a patient, the system including a calculation system for calculating an unknown one of the variables in a group including flow control or pump setting, intravenous solution volume, drug dose rate and drug quantity when three of the variables are known for intravenous administration of drugs or the like to a patient, comprising: keyboard means for entering data into the system; a computation device connected to the keyboard means to receive data for three of the variables therefrom for calculating the unknown variable display means connected to the computation device for displaying the data input to the computation device and for displaying a calculated value for the variable that was unknown.
Claim 2
Independent Claim
120 words
A system for intravenously administering a drug dosage to a patient, the system including a calculation system for calculating an unknown one of the variables in a group including flow control or pump setting, intravenous solution volume, drug dose rate and drug quantity when three of the variables are known for intravenous administration of drugs or the like to a patient, comprising: keyboard means for entering data into the system; a computation device connected to the keyboard means to receive data for three of the variables therefrom for calculating the unknown variable display means connected to the computation device for displaying the data input to the computation device and for displaying a calculated value for the variable that was unknown.
Claim 3
Dependent Claim
90 words
The system of claim 1 wherein the keyboard means includes: a first set of keys connected to the computation device for listing signal information under the variable headings of variables selected from the pump setting, intravenous solution volume, drug dose rate and drug quantity; a second set of keys connected to the computation device for supplying signals thereto indicative of the numerical values of the selected variables; and a third set of keys connected to the computation device for supplying signals thereto indicative of the units of the selected variables.
Claim 4
Dependent Claim
28 words
The system of claim 2 wherein the third set of keys includes a key for selecting the units of the pump setting to be cubic centimeters per hour.
Claim 5
Dependent Claim
27 words
The system of claim 2 wherein the third set of keys includes a key for selecting the units of the pump setting to be drops per minute.
Claim 6
Dependent Claim
32 words
The system of claim 2 wherein the third set of keys includes a key for selecting the units of the drug dose rate to be in units of weight per unit time.
Claim 7
Dependent Claim
39 words
The system of claim 5 wherein the third set of keys includes a key for selecting the units of the drug dose rate to be in units of weight per unit time per unit area of a patient's body.
Claim 8
Dependent Claim
39 words
The system of claim 5 wherein the third set of keys includes a key for selecting the units of the drug dose rate to be in units of weight per unit time per unit weight of a patient's body.
Claim 9
Dependent Claim
33 words
The system of claim 2 wherein the third set of keys includes a key for selecting the quantity of drug to be administered to a patient to be in micrograms, milligrams or UNITS.
Claim 10
Dependent Claim
32 words
The system of claim 2 wherein the third set of keys includes a key for selecting the quantity of intravenous solution to be administered to a patient to be in cubic centimeters.
Claim 11
Dependent Claim
26 words
The system of claim 2 wherein the keyboard further includes a key for supplying data indicative of the patient's body surface area to the computation device.
Claim 12
Dependent Claim
25 words
The system of claim 2 wherein the keyboard further includes a key for supplying data indicative of the patient's body weight to the computation device.
Claim 13
Dependent Claim
25 words
The system of claim 2 wherein the keyboard further includes a key for supplying data indicative of the patient's body height to the computation device.
Claim 14
Dependent Claim
32 words
The system of claim 2 wherein the keyboard further includes a key for providing data indicative of the number of drops of drug solution per minute to be administered to a patient.
Claim 15
Dependent Claim
16 words
The system of claim 1 wherein the display means displays permissible units for each selected variable.
Claim 16
Dependent Claim
26 words
The system of claim 1 further including display driver means connected between the computing device and the display means for supplying data to the display means.
Claim 17
Dependent Claim
24 words
The system of claim 15 wherein the computing device comprises an electronic digital computer and the display means comprises a liquid crystal display device.
Claim 18
Dependent Claim
28 words
The system of claim 1 wherein the computation device has an output connected to a valve for controlling the rate at which fluid is administered to the patient.
Claim 19
Independent Claim
144 words
A method for intravenously administering a drug dosage to a patient, the method including determining an unknown one of the variables in the group including fluid flow or pump control setting, intravenous solution volume, drug dose rate and drug quantity when three of the variables are known and one is unknown for intravenous administration of drugs of the like to a patient, comprising the steps of: providing a computation device for performing calculations on data input thereto; supplying data to the computation device and to identify the names of known variables; supplying data indicative of the numerical values of the known variables to the computation device; supplying data indicative of the units of the known variables to the computation device; supplying data indicative of selected units of the unknown variable to the computation device; and computing a numerical value for the previously unknown variable.
Claim 20
Independent Claim
144 words
A method for intravenously administering a drug dosage to a patient, the method including determining an unknown one of the variables in the group including fluid flow or pump control setting, intravenous solution volume, drug dose rate and drug quantity when three of the variables are known and one is unknown for intravenous administration of drugs of the like to a patient, comprising the steps of: providing a computation device for performing calculations on data input thereto; supplying data to the computation device and to identify the names of known variables; supplying data indicative of the numerical values of the known variables to the computation device; supplying data indicative of the units of the known variables to the computation device; supplying data indicative of selected units of the unknown variable to the computation device; and computing a numerical value for the previously unknown variable.
Claim 21
Dependent Claim
29 words
The method of claim 18 further including the step of providing a display device for displaying permissible units of the variables that may be input to the computation device.
Claim 22
Dependent Claim
38 words
The method of claim 18 further including the step of setting at least one of the variables to zero if an attempt is made to enter numerical values for all four variable are input to the computation device.
Claim 23
Dependent Claim
32 words
The method of claim 18, further including the step of connecting an output of the computational device to a valve for controlling the rate at which fluid is administered to the patient.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |