Handheld medical calculator and medical reference device

• US 6,167,412 A
• Filed: 07/14/1998
• Issued: 12/26/2000
• Est. Priority Date: 07/14/1998
• Status: Expired due to Fees

• Current Assignee: Agilent Technologies, Inc.
• Original Assignee: Agilent Technologies, Inc.
• Inventors: Simons, Tad Decatur
• Primary Examiner(s): Malzahn, David H.
• Application Number:
  US09/115,457
• Time in Patent Office: 896 Days
• Field of Search: 708/105, 708/132, 708/200, 600/300, 600/481, 600/508, 600/529
• US Class Current: 708/105
• CPC Class Codes: G06F 15/025 adapted to a specific application
• CPC Class Codes: G16H 20/10 relating to drugs or medications, e.g. for ensuring correct administration to patients
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 70/40 relating to drugs, e.g. their side effects or intended usage
• CPC Class Codes: G16H 70/60 relating to pathologies

Abstract

A handheld medical calculator and reference device having an input keypad and an output screen connected to a processor with memory to perform specific clinical functions. The clinical functions include: basic mathematical operations and common scientific functions for routine calculations; store/recall functions for numbers and for routinely used program settings; phone directory; user selection of display modes (fixed, scientific, choice of radix), degree/radian; time, date, and day of week features for timing and alarms (with display format choices); drug and infusion calculations; hemodynamic and cardiac functions; respiratory and pulmonary functions; acid-base functions; nutritional functions; nomograms, maps, and a reference table of normal values; and patient vital signs record keeping.

Claims

1. A handheld medical device, comprising:

an output mechanism for outputting a plurality of preconfigured prompts and a medical answer;

an input mechanism operatively associated with said output mechanism, said input mechanism for inputting a predetermined medical question, information, and choices among plurality of said preconfigured prompts;

memory operatively connected to said input and output mechanisms, said memory containing said plurality of preconfigured prompts for said predetermined medical question and said medical answer; and

a processor connected to said memory and said input and output mechanisms, said processor;

responsive to said predetermined medical question input at said input mechanism to cause said memory to provide said preconfigured prompts to said output mechanism,

responsive to said preconfigured prompts to receive said information and said choices among said plurality of preconfigured prompts from said input mechanism,

responsive to said choices among said plurality of preconfigured prompts to process said medical answer, and

operable with said memory as a result of said predetermined medical question, said information, and said choices among said plurality of preconfigured prompts to provide said medical answer to said output mechanism.

2. The handheld medical device as claimed in claim 1 wherein:

said output mechanism is capable of outputting a plurality of preconfigured prompts and a plurality of information adjacent to and related to said plurality of preconfigured prompts, said output mechanism is capable of outputting at least one preconfigured prompt related to said predetermined medical question;

said input mechanism is capable of being operatively associated with said output mechanism and said at least one preconfigured prompt; and

said processor is operable to establish the operative association of said input mechanism with said at least one preconfigured prompt from said output mechanism.

3. The handheld medical device as claimed in claim 1 wherein:

said output mechanism is a display capable of displaying a plurality of preconfigured prompts and a plurality of information adjacent to and related to said plurality of preconfigured prompts, and said display is capable of simultaneously displaying all of said preconfigured prompts and input information related to said predetermined medical question.

4. The handheld medical device as claimed in claim 1 wherein:

said memory contains drug dosage information;

said processor includes a calculator;

said processor is responsive to said input mechanism inputting a drug question to provide said preconfigured prompt to obtain patient information;

said processor is responsive to said input mechanism inputting patient information to use said patient information and said drug information from said memory to calculate a drug dosage answer; and

said processor is operable to cause said output mechanism to output said drug dosage answer.

5. The handheld medical device as claimed in claim 1 wherein:

said memory contains respiratory and pulmonary information;

said processor includes a calculator;

said processor is responsive to said input mechanism inputting a respiratory or pulmonary question to provide said preconfigured prompt to obtain prescription and patient information;

said processor is responsive to said input mechanism inputting prescription and patient information to use said prescription and patient information and said respiratory and pulmon ary information from said memory to respectively calculate a respiratory or pulmonary answer; and

said processor is operable to cause said output mechanism to output said respiratory or pulmonary answer.

6. The handheld medical device as claimed in claim 1 wherein:

said memory contains acid-base information and an acid-base nomogram;

said processor includes a calculator;

said processor is responsive to said input mechanism inputting an acid-base question to use said acid-base information and said acid-base nomogram from said memory to calculate an acid-base answer; and

said processor is operable to cause said output mechanism to output said acid-base answer.

7. The handheld medical device as claimed in claim 1 wherein:

said memory contains a medicai mapping and a medical nomogram;

said output mechanism is a display capable of displaying said medical mapping and said medica nomogram;

said processor is responsive to said input mechanism inputting a medical mapping question or medical nomogram question to cause said output mechanism to respectively display said medical mapping, or said medical nomogram.

8. The handheld medical device as claimed in claim 1 wherein:

said memory contains information on normal values for various human conditions; and

said processor is responsive to said input mechanism inputting a question on a normal human condition to use said information from said memory to provide said normal value and to cause said output mechanism to output said normal value as an answer.

9. The handheld medical device as claimed in claim 1 wherein:

said memory contains cardiac and hemodynamic information;

said processor includes a calculator;

said processor is responsive to said input mechanism inputting a cardiac or hemodynamic question to use said cardiac and hemodynamic information from said memory to respectively calculate a cardiac or hemodynamic answer; and

said processor is operable to cause said output mechanism to output said cardiac or hemodynamic answer.

10. The handheld medical device as claimed in claim 1 wherein:

said memory contains nutrition information;

said processor includes a calculator;

said processor is responsive to said input mechanism inputting a nutrition question to provide said preconfigured prompt to obtain patient information;

said processor is responsive to said input mechanism inputting patient information to use said patient information and said nutrition information from said memory to respectively calculate a nutrition answer; and

said processor is operable to cause said output mechanism to output said nutrition answer.

11. The handheld medical device as claimed in claim 1 wherein:

said input information is patient information;

said memory is capable of storing said patient information; and

said processor is responsive to said input mechanism inputting said predetermined medical question to cause said output mechanism to output said patient information.

12. A handheld medical calculator and reference device, comprising:

a display for outputting first and second preconfigured prompts and a medical answer;

a keypad operatively associated with said display, said keypad for inputting a predetermined medical question, information, and choices among said first and second preconfigured prompts;

a memory operatively connected to said keypad and display, said memory containing said first and second preconfigured prompts for said predetermined medical question and medical data; and

a processor connected to said memory and said keypad and said display, said processor;

responsive to said predetermined medical question input at said keypad to cause said memory to provide said first preconfigured prompts to said display,

responsive to said information at said keypad to provide said second preconfigured prompts,

responsive to said information and said choices among said second preconfigured prompts to process said information and said plurality of preconfigured responses with said medical data in said memory to produce said medical answer, and

operable to provide said medical answer to said display.

13. The handheld medical calculator and reference device as claimed in claim 12 wherein:

said display is capable of displaying a plurality of second preconfigured prompts and a plurality of information adjacent to and related to said plurality of second preconfigured prompts, said display is capable of displaying at least one first preconfigured prompt related to said predetermined medical question;

said keypad has at least one key capable of being operatively associated with said display and said at least one first preconfigured prompt; and

said processor is operable to establish the operative association of said at least one key with said at least one first preconfigured prompt on said display.

14. The handheld medical calculator and reference device as claimed in claim 12 wherein:

said display is capable of displaying a plurality of second preconfigured prompts and a plurality of information adjacent to and related to said plurality of second preconfigured prompts, and said display is capable of simultaneously displaying all of said second preconfigured prompts and all of said input information related to said predetermined medical question.

15. The handheld medical calculator and reference device as claimed in claim 12 wherein:

said memory contains drug dosage information;

said processor includes a calculator;

said processor is responsive to said keypad inputting a drug question to provide preconfigured prompts for prescription, patient weight, renal insufficiency, and drug concentration information;

said processor is responsive to said keypad inputting said prescription, patient weight, renal insufficiency, and drug concentration information to use said information and said drug dosage information from said memory to calculate a drug dosage answer with adjustment for body surface area and weight; and

said processor is operable to cause said display to output said drug dosage answer.

16. The handheld medical calculator and reference device as claimed in claim 12 wherein:

said memory contains drug infusion information;

said processor includes a calculator;

said processor is responsive to said keypad inputting a drug infusion question to provide preconfigured prompts for prescription, patient weight, renal insufficiency, and drug concentration information;

said processor is responsive to said keypad inputting said prescription, patient weight, renal insufficiency, and drug concentration information to use said information and said drug infusion information from said memory to calculate a drug infusion answer with adjustment for body surface area and weight; and

said processor is operable to cause said display to output said drug infusion answer.

17. The handheld medical calculator and reference device as claimed in claim 12 wherein:

said memory contains respiratory and pulmonary nomograms and information;

said processor includes a calculator;

said processor is responsive to said keypad inputting a respiratory or pulmonary question to provide said second preconfigured prompts to ask ventilation parameters questions;

said processor is responsive to said keypad inputting said ventilation parameters question to provide further preconfigured prompts for relevant patient data;

said processor is responsive to say keypad inputting said relevant patient data to use said nomogram to determine body surface area and respiration rate;

said processor is responsive to say keypad inputting said relevant patient data to calculate minute ventilation and tidal volume; and

said processor is operable to cause said display to output said minute ventilation, tidal volume, and respiration rate.

18. The handheld medical calculator and reference device as claimed in claim 12 wherein:

said memory contains respiratory and pulmonary mapping and information;

said processor includes a calculator;

said processor is responsive to said keypad inputting a respiratory or pulmonary question to provide said second preconfigured prompts to ask a vital capacity question;

said processor is responsive to said keypad inputting said vital capacity question to provide further preconfigured prompts for relevant patient data;

said processor is responsive to say keypad inputting said relevant patient data to calculate said vital capacity; and

said processor is operable to cause said display to output said vital capacity and mapping.

19. The handheld medical calculator and reference device as claimed in claim 12 wherein:

said memory contains acid-base information and an acid-base nomogram;

said processor includes a calculator;

said processor is responsive to said keypad inputting an acid-base question to cause said display to output said second preconfigured prompts on acid-base equations, acid-base disorders, and other acid-base related quantities;

said processor is responsive to keypad input of said acid-base equations, acid-base disorders, and other acid-base related quantities and said acid-base information and said acid-base nomogram from said memory to determine acid-base solutions, list acid-base disorders, and calculated acid-base related quantities; and

said processor is operable to cause said display to output acid-base solutions, list acid-base disorders, and calculated acid-base related quantities.

20. The handheld medical calculator and reference device as claimed in claim 12 wherein:

said memory contains medical information and a medical nomogram;

said processor includes a calculator;

said processor is responsive to said keypad inputting a medical question to use said medical information and said medical nomogram from said memory to provide a recommended treatment; and

said processor is operable to cause said display to output said recommended treatment.

21. The handheld medical calculator and reference device as claimed in claim 12 wherein:

said memory contains cardiac information;

said processor includes a calculator;

said processor is responsive to said keypad inputting a cardiac question to provide said second preconfigured prompts for cardiac function tests, cardiac work indices, and vascular resistance;

said processor is responsive to said keypad inputting said cardiac function tests, cardiac work indices, and vascular resistance to provide further preconfigured prompts for patient information;

said processor is responsive to said patient information to calculate said cardiac function tests, cardiac work indices, and vascular resistance; and

said processor is operable to cause said display to output said cardiac function tests, cardiac work indices, and vascular resistance.

22. The handheld medical calculator and reference device as claimed in claim 12 wherein:

said memory contains hemodynamic information;

said processor includes a calculator;

said processor is responsive to said keypad inputting a hemodynamic question to provide said second preconfigured prompts for patient information, pressure data, or heart data;

said processor is responsive to said keypad inputting said patient information, pressure data, or heart data to indicate missing information or data;

said processor is responsive to said missing information or data to calculate said missing information or data; and

said processor is operable to cause said display to output completed patient information, pressure data, or heart data.

23. The handheld medical calculator and reference device as claimed in claim 12 wherein:

said memory contains nutritional information;

said processor includes a calculator;

said processor is responsive to said keypad inputting a nutritional question to provide said second preconfigured prompts for metabolic, assessment, and hyperalimentation determinations;

said processor is responsive to said keypad inputting said for metabolic, assessment, and hyperalimentation determinations to calculate basal metabolic rate, basal energy expenditure, nitrogen balance, BUN/urea conversion, lean body mass, ideal body weight, or time, concentrations, and flow rate for nutrients; and

said processor is operable to cause said display to output said basal metabolic rate, basal energy expenditure, nitrogen balance, BUN/urea conversion, lean body mass, ideal body weight, or time, concentrations, and flow rate for nutrients.

24. The handheld medical calculator and reference device as claimed in claim 12 wherein:

said processor is responsive to the input of patient data to store such patient data in said memory; and

said processor is responsive to said keypad inputting a patient question to retrieve said patient data from said memory and cause said display to output said patient data.