CN2348391Y

CN2348391Y - Organism blood gas analyzer

Info

Publication number: CN2348391Y
Application number: CN 98229751
Authority: CN
Inventors: 吴时达; 陈琳; 张必龙; 付远忠; 陈茂
Original assignee: Chengdu First Peoples Hospital
Current assignee: Chengdu First Peoples Hospital
Priority date: 1998-10-26
Filing date: 1998-10-26
Publication date: 1999-11-10
Anticipated expiration: 2008-10-26

Abstract

The utility model discloses an organism blood gas analyzer, which is used for clinic. The utility model is composed of a single sheet machine system, wherein, the computer in the single sheet machine system is a special computer; the logical relationship of a decoding circuit is E[1]=A[14]. WR. AD=A[14]. WR. AD; the input keyboard of the special computer is a matrix special keyboard of 4*4; the number from '0' to '9', the small point '. ', the 'determinate' key, the 'parameter ' key, the 'treatment' key and the 'screen turnover' key are arranged on the keyboard. After the utility model inputs the organism blood gas parameter which is collected into a calculator, the utility model can visually display the acid-base imbalance conclusion or the treatment regimen on a display through the logical reasoning, the analysis and the judging by the calculator.

Description

The body blood gasanalyzer

Keeping the normal and acid base equilibrium of body electrolyte, partial pressure of carbon dioxide, partial pressure of oxygen, is the essential condition of keeping cells survival and tissue, organ operate as normal.In the clinical position, sour alkali is unbalance, electrolyte disturbance, respiratory failure are one of immediate causes that causes patient death, so harmfulness is very big.The unbalance method of clinical judgment acid alkali mainly contains double unbalance determining method, triple unbalance determining method and the unbalance determining method of quadruple etc.China has the people to utilize programmed program that body parameter of vim and vigour input CASIO Fx-4000P, the CASIOFx-4500P process computer of gathering carried out the unbalance judgement of sour alkali, and also the someone utilizes SHARP-PC-1500 type robot calculator to carry out the unbalance judgement of sour alkali.Above method all needs to add computer software by general-purpose calculator or robot calculator carries out, and needs to be difficult for grasping by professional and technical personnel's operation of carrying out training, not portable, is unfavorable for clinical use, promotes comparatively difficulty.

Goal of the invention of the present utility model, be to design a kind of tailored version body blood gas analysis counter, when clinical use, behind the various body parameter of vim and vigour of being gathered by the keyboard special in this utility model input, can be in counter according to the judgment formula and the step of the unbalance determining method of sour alkali, analyze, reasoning and judgement, and analysis and judgement visual result ground shown that on display screen general clinician all can grasp easily.

Basic technical scheme of the present utility model is made of microcontroller system, microprocessor in the one-chip computer (5), decoding scheme (6), program storage (7), data-carrier store (8), oscillator (9) have constituted special calculator, and wherein the logical combination of decoding scheme (6) closes and is

Input keyboard in the single-chip microcomputer is the keyboard special of 4 * 4 arranged, its P _1.0-P _1.3Key and P _1.4-P _1.7Key connects the output interface and the input interface of microprocessor (5) respectively.When not having key at ordinary times and pressing, P _1.4-P _1.7Read and be all " 1 ", when desiring to read key assignments, in turn with P _1.0-P _1.3P is read in output " 0 " more respectively _1.4-P _1.7Value, if " 0 " person arranged, then this shows key and presses, and can judge the position of pressing key thus.

The arranged of keyboard special decides according to the Microprocessor Interface quantity that is adopted.When selected microprocessor was 8 interfaces, this keyboard special was 4 * 4 arranged totally 16 keys, can be provided with respectively digital " 0 " to " 9 ", radix point " ", " determining ", " parameter ", " diagnosis ", " treatment " reach " turning over screen " key each one.

Describe the utility model in detail below in conjunction with embodiment.

Fig. 1: circuit theory diagrams of the present utility model;

Fig. 2: the utility model keyboard special schematic diagram;

Fig. 3: dedicated computing machine circuit schematic diagram in the utility model;

Fig. 4: the decoding scheme schematic diagram in the special purpose computer;

Fig. 5: the interface signal of LCD;

Fig. 6: circuit of the present utility model is implemented figure.

The clock signal of microprocessor (9) is provided by external crystal oscillator, from XTAL ₁, XTAL ₂The end input, crystal oscillation frequency can be selected between 0～12MHz.8 bit data bus D of microprocessor ₀～D ₇, 16 bit address bus A ₀～A ₁₅And latch signal ALE, external program memory select signal PSEN, all passes through decoding scheme (6), realizes and being connected of program storage (7), data-carrier store (8) and LCD (4).

Make the address assignment of system be by decoding: program storage 0000H～FFFFH is 64K altogether, and data-carrier store 0000H～01FFH is 8K altogether, and the address of LCD is EFFEH～FFFFH.Program storage is selected the RAM of band power down protection for use.

LCD in the special calculator (4) is a TM10032 graphical dots configuration module, its interface signal as shown in Figure 5, D wherein ₀～D ₇Be the D of 8 position datawires and special calculator ₀～D ₇Link to each other E ₁, E ₂Be the controller gating signal, R/W is a read-write control signal, A ₀Select signal for the command mouth, DB is a data-signal, V _SSBe voltage-to-ground, V _CCIt is supply voltage.

In the present embodiment, power supply adopts 1.5 volts of dry cell power supplies of 4 joints, by the MAX603 integrated circuit voltage stabilizing is carried out in input, exports 5 volts of (V _CC) give special calculator, also deliver to ICL7660 negative voltage transition device simultaneously and produce negative voltage V ₀As the driving voltage of LCD, the C in the circuit ₃, C ₄, C ₅, C ₆Be the 10uf filter capacitor.Microprocessor is 80C31, oscillating capacitance C ₁, C ₂Value is between 20-100PF.The logic gate of decoding scheme is combined as 74HC373,74HC00,74HC04.Program storage is selected 27C512 64KEPROM for use.Data-carrier store is selected the RAM of DS1225AB 8K band power down protection for use.LCD adopts TM1032 graphical dots configuration module.

Numerical key of the present utility model and " " key are used for carrying out the parameter input, and each parameter is display reminding when input.As: the running program of " parameter input body weight 63.25KG " is; Start → by " parameter " key → input " 63.25 " → by " determining " key, the expression input finishes.In parameter of vim and vigour PaCO2 (Na), HCO3 (PNA), Na, CL, K+, PO2 and the diagnosis of importing other, therapeutic process, meet options, as 1-K 2-CL 3-Na ... Deng, need the pairing numeral of input options.The user is start in a single day, and " parameter " key of pressing in the function key carries out the parameter input, the order input that display can point out the user carry out all parameters automatically, and the parameter to input detects after input finishes, if wrong, then show " the parameter input is wrong, please re-enter "; If the parameter input is correct, proceed further work." diagnosis " key just can carry out work after the parameter input is correct, otherwise shows " asking first input parameter "." diagnosis " result is shown as acid-base imbalance, EI and hypoxemia three major types." treatment " key effectively, also is shown as acid-base imbalance, EI, hypoxemia three major types after " diagnosis " finished.When showing multi-screen output, " turning over screen " key turns over screen and shows.

The utility model theory and practice of combining closely is medical science experience and high-tech crystallization, and how tame model machine is on probation through hospital clinical, have easily and fast, accurately, multiple advantage such as be suitable for, be easy to large-scale popularization and use.Particularly, in input parameter of the present utility model, PaCO2 (Na), HCO3 notions such as (PNA) have been introduced, used acid to seal the unbalance judgment principle of quadruple, further overcome acid and sealed the high shortcoming of rate of missed diagnosis in triple unbalance determining methods, improved diagnostic reliability, more be subjected to medical personnel's favorable comment.The utility model equipment needed thereby is simple, and Project Realization is easy, drops into a small amount of fund and technician and can finish production in enormous quantities.

Claims

1, body blood gasanalyzer.Be made of Single Chip Microcomputer (SCM) system, it is characterized in that computing machine wherein is a special purpose computer, the logical relation of decoding scheme in the special purpose computer (6) is

Input keyboard wherein (2) is the special-purpose glutinous key of 4 * 4 arranged, its P _1.0-P _1.3The input interface of microprocessor in the keyed jointing special calculator (5), P _1.4-P _1.7The output interface of keyed jointing microprocessor.

2, body blood gasanalyzer as claimed in claim 1 is characterized in that on the described keyboard special, be provided with digital " 0 " to " 9 ", radix point " ", " determining ", " parameter ", " diagnosis ", " treatment " reach " turning over screen " key each one.

3, as the described body blood gasanalyzer of claim l, it is characterized in that after described decoding scheme (6) decoding, make the address assignment of system be: program storage (7) 0000H～FFFFH is 64K altogether, data-carrier store (8) 0000H～01FFH is 8K altogether, and the address of LCD (4) is EFFEH～FFFFH.

4, body blood gasanalyzer as claimed in claim 1 is characterized in that the program storage (7) in the special purpose computer is selected the RAM that is with power down protection for use.

5, body blood gasanalyzer as claimed in claim 1 is characterized in that in the described special purpose computer, and LCD (4) is a TM10032 graphical dots configuration module.

6, body blood gasanalyzer as claimed in claim 1 or 2 is characterized in that in the described keyboard special (2) P _1.4-P _1.7Key is respectively the parameter key, diagnoses key, treats key and turns over the screen key.

7, body blood gasanalyzer as claimed in claim 1 is characterized in that described keyboard special (2) is the diaphragm type touch keyboard.

8, as the described body blood gasanalyzer of claim l.It is characterized in that in the described special purpose computer that microprocessor (5) adopts the 80C31 integrated circuit, decoding scheme (6) adopts 74HC373,74HC00,74HC04 integrated circuit.Program storage (7) adopts the 27C512 integrated circuit, and data-carrier store (8) adopts the DS1225-AB integrated circuit, and the clock of microprocessor (9) is provided by external crystal oscillator.