CN2051097U

CN2051097U - Multifunction electrocardiogram callipers

Info

Publication number: CN2051097U
Application number: CN89203747U
Authority: CN
Inventors: 尹炳生
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-03-29
Filing date: 1989-03-29
Publication date: 1990-01-17

Abstract

The utility model relates to an improved electrocardiogram caliper. The middle part of a caliper body is provided with a convex caliper clamp to make the caliper directly measure a heart rate, F (f) wave frequency, amplitude, time limit and average heart electrical axis and mark general heart electrical data comprising a P-R interval, a Q-T interval and the heart rate for making users make judgment immediately. The utility model has the advantages of simple structure and convenient operation, initial images are not damaged, the manual measuring speed is increased by more than three times, and the accuracy is increased.

Description

Multifunction electrocardiogram callipers

This utility model relates to a kind of improved ecg measurement chi.

Multiple shapes such as ecg measurement chi in the past has directly, bends, tower, circle or class slide rule, what wherein have can only heart rate, the single cardiac electric axis of calculating that has, most of electrocardiographic rooms measure the length in each wave-amplitude and time limit with divider, on electrocardiogram graph paper, calculate the result again, judge whether heart rate, P-R interval, Q-T interval is normal, and must search three kinds of conventional forms, process is loaded down with trivial details consuming time many, not only damage original figure when measuring easily, and be difficult to survey accurate the following amplitude of 1mm (as short P ripple, R ripple etc.) with divider; Class slide rule type is calculated the complete but complex structure of function, and can not directly measure each wave-amplitude, time limit and atrium and pounce on (quivering) moving F(f) ripple.

The purpose of this utility model is to provide a kind of and directly measures heart rate, atrial fibrillation (pouncing on) wave frequency, amplitude and time limit, and can judge P-R interval, Q-T interval, heart rate and cardiac electric axis result's ecg measurement chi simultaneously.

Task of the present utility model is finished like this, this chi is made with laminar hard opaque material, there is a convex chi card at chi body middle part, be directly used in and measure amplitude, time limit and F(f) wave frequency, and all ages and classes, different frequency group P-R upper limits of normal diagram and the diagram of age groups normal cardiac rate bound on the chi face, have been marked simultaneously, cardiac electric axis survey map and R-R spacing heart rate measurement, and double R-R spacing heart rate measurement and with F(f) three kinds of heart rate measurement scales measuring of wave frequency.

Advantage of the present utility model is 1. simple in structure, does not damage original electrocardiographicdigital figure figure during use; 2. integrate direct function and each normal value of measuring the various conventional parameters of clinical electrocardiogram of each hospital's electrocardiographic room at present; 3. cost is low, easily popularizes.

Below in conjunction with drawings and Examples this utility model is further described.

Fig. 1 is an anterior view of the present utility model.

Fig. 2 is a dorsal view of the present utility model.

1-convex chi card 2-R-R peak heart rate measurement chi

12.5mm line on the 3-twice R-R peak heart rate measurement chi 4-convex chi card

Each age group normal cardiac rate table of 25mm line 6-on the 5-convex chi card

Each age group P-R interval normal value tabulation of 7-

The diagram of 8-Q-T interval normal value

9-mean electrical axis survey map

With reference to Fig. 1, the top is that the chi of unit is a R-R peak heart rate measurement chi (2) with the millimeter, and every 5mm place is the fundamental frequency number, at between each fundamental frequency number, every 1mm represents heart rate number of times difference (1,1.5-20 etc.), and the-1st, correction value promptly subtracts 1 after calculating total heart rate.The left coordinate diagram is Q-T normal value diagram (8), and vertical coordinate is time (second), abscissa be heart rate time/minute, the point that the arc in the coordinate distributes is the normal maximum upper limit of the used Q-T of general electrocardiographic room (second).Right figure is that biaxial coordinates figure is mean electrical axis survey map (9), conventional hexaxial reference system coordinate is reduced to I, III two axis coordinate systems here, and svelteness is easy to use.

With reference to Fig. 2, below convex chi card (1) is used to measure each wave-amplitude of electrocardiogram, time limit, each time interval and room and pounces on (quivering) F(f) ripple etc., scale is unit with the millimeter, when measuring amplitude, 1mm represents 0.1mv, and during Measuring Time, 1mm represents 0.04 second, 12.5mm line (4) or 25mm line (5) on the convex chi card can be represented 1 second, in order to calculate F(f) wave frequency.The top is that the graduated scale of unit is a twice R-R peak heart rate measurement chi (3) with the millimeter, is outside the fundamental frequency number divided by every 10mm place, and all the other are consistent with the implication of R-R peak heart rate measurement chi.The left side, middle part is each age group P-R interval normal value tabulation (7), the principal coordinate scale is that every scale of time (second) went forward one by one 0.01 second, five secondary coordinates are represented five different age group, scale on each secondary coordinate is the heart rate grouping of each age group, when being convenient to search the different heart rate of age groups, the upper limits of normal of P-R interval.The right side, middle part be each age group normal cardiac rate table (6), and the principal coordinate scale is heart rate number (inferior/minute), and basic scale of every 5mm goes forward one by one 10 times/minute successively, and six secondary coordinates are represented six age groups, and the bound of its heart rate of correspondence.

Using method of the present utility model:

1, there is a convex chi card (1) at this slide calliper rule middle part, when measuring amplitude, this card is aligned crest, and the slide calliper rule scale is being pressed the baseline of figure, can directly read the millimeter of amplitude, if calibration voltage is 1mv/10mm, then scale reading is the millivolt number.

2, Measuring Time the slide calliper rule traverse, is blocked the initial part that desire is surveyed with the chi card, and millimeter is directly read by visual its termination portion, multiply by behind the value to obtain time limit numerical value (second) in 0.04 second.

When 3, measuring heart rate, R-R heart rate measurement chi (2) left side start line is aimed at a R crest, can read the per minute heart rate at the 2nd R crest to part, twice R-R heart rate measurement chi (3) usage is identical with this, but to aim at reading at the 3rd R crest place, computing formula: total heart rate=(master looks rate+millimeter * this millimeter and represents the value of heart rate)-correction value.

4, measure the room and pounce on (quivering) F(f) during ripple, slide calliper rule are horizontal, aim at initial part with convex chi card (1) one side, number goes out F(f in the 12.5mm line (4) on convex chi card) the ripple number, multiply by 120, or number goes out F(f in the 25mm line (5) on convex chi card) the ripple number, multiply by 60, can obtain F(f) frequency (inferior/minute).

When 5, inquiring about each age group heart rate normal value, see heart rate table (6) clearly and go up each age group and the corresponding numerical value of heart rate coordinate, be the heart rate normal value (inferior/minute) of this age group.

6, during inquiry P-R interval normal value, see the corresponding position of each heart rate group and P-R value coordinate in P-R interval figure (7) age groups clearly, be the accordingly the highest P-R normal value (number second) of interval.

When 7, inquiry institute surveys between Q-T time value whether above upper limits of normal, see Q-T normal value coordinate diagram (8) clearly, the Q-T interval upper limit compares with it when finding corresponding heart rate, can judge whether the Q-T interval is normal.

When 8, measuring the common average cardiac electric axis, on cardiac electric axis figure (9), search, get the data that mark I, III are led, promptly get the angle of corresponding mean electrical axis.

Claims

1, a kind of multi-functional electrocardiogram slide calliper rule, it is characterized in that there is a convex chi card that directly is used to measure amplitude, time limit and F (f) wave frequency at chi body middle part, and on chi, marked all ages and classes simultaneously, diagram of P-P upper limits of normal and the diagram of age groups normal cardiac rate bound during different frequency, Q-T interval normal value diagram during the difference heart rate, the cardiac electric axis survey map, amplitude time limit dip stick, and three kinds of heart rate measurement chis.

2, multi-functional electrocardiogram slide calliper rule according to claim 1 is characterized by the slide calliper rule tow sides and have three kinds of heart rate measurement chis, comprise R-R spacing heart rate measurement chi, double R-R spacing heart rate measurement chi and F(f) the wave frequency dip stick.

3, multi-functional electrocardiogram slide calliper rule according to claim 1 is characterized by slide calliper rule and are made by laminar opaque hard material.