CN2126448U

CN2126448U - Electrocardiogram secondary projection principle demonstrating instrument

Info

Publication number: CN2126448U
Application number: CN 92226910
Authority: CN
Inventors: 刘元正; 李雪波
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-13
Filing date: 1992-07-13
Publication date: 1992-12-30

Abstract

The utility model discloses an electrocardiogram secondary projection principle demonstrating instrument, comprising two parts of a demonstration panel and a recording drum. The demonstration panel is provided with a universal adjustable shelf and a vectorcardiographic ring disc, the vectorcardiographic loop disc is labeled with the frontal plane (or chest plane) six-axle system of the human body and the frontal plane (or chest plane) vectorcardiographic ring of the normal person, the universal adjustable shelf is respectively provided with a vector ring pen and an electrocardiogram pen, and the recording drum comprises a base, a dynamic system and a recording paper. When the vector ring pen runs on the vectorcardiographic ring disc along the track of a vectorcardiographic ring, the electrocardiogram pen can draw the electrocardiogram of the vectorcardiographic ring on a lead axle on the recording drum.

Description

Electrocardiogram secondary projection principle demonstrating instrument

The utility model has related to the teaching aid field, and specifically a kind of cardiogram reprojection principle demonstration instrument is applicable to that lecturing the cardiogram principle in the medical teaching uses.

As everyone knows, Electrocardiographic ultimate principle is one of the main contents on diagnostics basis, and is existing when lecturing the cardiogram principle, mostly be to adopt the schematic theory description, promptly, utilize projection to do the figure method, make the cardiogram of different axis of leads according to existing vectorcardiographic loop.It is this that to do figure teaching methodology fairly simple, easily realize, but abstract, stiff, be difficult for support and hold and watch.The cardiogram function science of clinical usefulness, note the cardiogram value of human body accurately, but it can not be used for observing and showing Electrocardiographic origin cause of formation principle.Therefore, for many years, how accurate, directly perceived, as to vividly describe human body electrocardio figure origin cause of formation principle has become the difficult problem that diagnostics is imparted knowledge to students.

The purpose of this utility model is to release that a kind of energy is directly perceived, image, show the apparatus for demonstrating of human body electrocardio figure principle dynamically, to deepen understanding and the grasp of beginner to the cardiogram principle, improves the quality of teaching.

Design of the present utility model is to come out with a cover presentation record device equivalent simulation being used as the overall process that the figure sciagraphy represents cardiogram and vectorcardiographic loop relation, manage to make in the vectorcardiographic loop of this device on tracing a certain plane, the projecting figure of this vector loop on a certain axis of leads also depicted.

Task of the present utility model is to realize by the cooperating of a demonstration board and a log drum.An one electrocardio vector loop garden dish and a universal tressel are housed on the demonstration board,, can coil the vectorcardiographic loop garden organically to combine and link together, finish the conversion of cardiogram reprojection with log drum by universal tressel.Demonstration board is the square plank or the plastic plate that are kept upright that have base, in the central authorities of demonstration board vectorcardiographic loop garden dish is housed, and in the lower left (or lower right) of demonstration board universal tressel is housed.Vectorcardiographic loop garden dish is the garden dish that a usefulness timber, plastics or organic glass are made, mark has P, QRS, the T vectorcardiographic loop of human body face amount hexaxial reference system and normal person's face amount at (quarter) on the dish of garden, or be marked with P, QRS, the T vectorcardiographic loop of human body chest face hexaxial reference system and normal person's chest (horizontal stroke) face, also can be to be marked with human body abnormal electrocardiogram vector loop (as ventricle hypertrophy, miocardial infarction etc.).Vector loop garden dish is contained on the demonstration board by its garden heart and can have done damping around the garden heart and rotate.Universal tressel is one to lead the cross guide rail frame that gently constitutes by upright guide rail and level, bearing is housed on the guide rail, upright guide rail is to be fixed on the demonstration board, the one group of bearing (vertically bearing) that can do longitudinal sliding motion along guide rail is housed on the guide rail, be fixedly connected with another group and be the bearing (frame) that level is laid on the bearing bracket stand of bearing, horizontal guide rail is contained on the bearing, is a movable guiding rail, can do transverse horizontal and move, can do vertically moving again at the guiding lower edge upright guide rail of vertical bearing.An outwardly directed pen of tracing vectorcardiographic loop rail border of on horizontal guide rail, adorning, on the bearing bracket stand of upright guide rail, be equipped with one and describe Electrocardiographic pen, do universally when mobile in the plane at vector loop garden dish place when the vector loop pen, the cardiogram pen then can be done vertically moving up and down in same plane.Log drum is a device that parallel moving recording paper is provided, by pedestal, actuating unit, rotation axis, drum axle and recording paper strip constitute, but pedestal is boxlike (box) housing of a rectangle oval, actuating unit and bearing are housed respectively in the pedestal, actuating unit is a micromotor), it also can be a Mainspring type mechanical rotating mechanism, rotation axis has two of main drive shaft driven shafts, vertically arrange the two ends, the left and right sides that are contained in pedestal, main drive shaft is connected on the output shaft of actuating unit, driven shaft is contained on the interior bearing of pedestal, and two garden tubulars drum axles can be housed on rotation axis, is used to install record.Recording chart can be an individual layer paper web, surrounds the outside of two drum axles, and by friction gearing, drum axle drive recording chart is done parallel moving; Also can be to be a paper roll, be contained on the driven shaft that an end of paper roll is fastened on the main drive shaft, under the direct drive of rotation axis, paper roll is done parallel moving.

During use, log drum is emitted on side by side with demonstration board, choose the vectorcardiographic loop garden dish (as being the human body frontal vector loop) that needs, the rotating speed of adjusting log drum makes the parallel translational speed of recording chart greatly about about the 4-5 mm/second, rotate the electrocardial vector garden dish on the demonstration board, the positive electricity section (solid line) that makes dish go up a certain axis that leads (leading as the worker) is on vertically upward the position, operation vectorcardiographic loop pen moves a week along the track of a certain vectorcardiographic loop (as qrs loop) figure by (or counterclockwise) direction clockwise, just at this moment the cardiogram pen on the demonstration board can depicted the EGC pattern of a certain vectorcardiographic loop (as qrs loop) on this axis of leads synchronously on the paper tape of log drum.Rotate vectorcardiographic loop garden dish, the difference axis that leads is placed on vertically upward the position, can make the cardiogram of different vectorcardiographic loops on each axis of leads.Change corresponding vectorcardiographic loop garden dish, can also make V ₁-V ₆The cardiogram of human body chest face and human body abnormal electrocardiographic pattern.

The utility model is owing to can depict the cardiogram of this vectorcardiographic loop on a certain axis of leads dynamically when tracing vectorcardiographic loop, thereby make Electrocardiographic origin cause of formation principle become vivid, directly perceived, help deepening understanding and grasp, improve the quality of teaching the cardiogram principle.The utility model also has advantages such as simple and reasonable, flexible and convenient to use, has very high practical value.

Specific embodiment of the utility model is provided by following accompanying drawing.

Accompanying drawing is a structural representation of the present utility model.

As figure, (1) is actuating unit; (2) be pedestal; (3) be main rotary shaft; (4) be from rotation axis; (5) be log drum; (6) be recording chart; (7) (8) are the drum axle; (9) be hand-held frame; (10) be demonstration board; (11) be upright guide rail; (12) be the cardiogram pen; (13) be bearing bracket stand; (14) be vertical bearing; (15) be universal tressel; (16) be horizontal bearing; (17) be bearing bracket stand; (18) be horizontal guide rail; (19) be the vector loop pen; (20) be vectorcardiographic loop garden dish; (21) be vectorcardiographic loop.

Log drum (5) employing sheet-fed barrel structure, recording chart (6) is tightened the outside that installs around in two drums spool (7), (8), and the drum axle is two garden column casings of making of plastics, is contained in main drive shaft (3) and driven shaft (4) respectively and upward and with axle rotates together.Actuating unit (1) is a direct current motor, and main drive shaft (3) is that rotating speed of motor should make the parallel translational speed of recording chart remain on about the 4-5 mm/second by direct current motor (1) driven rotary that is contained in the pedestal (2).Upright guide rail (11), horizontal guide rail (18), rail bearing (14), (16) and bearing bracket stand (13), (17) constituted universal tressel (15), upright guide rail (11) is fastened on the demonstration board (10) with screw, be equipped with four above and vertically arrange bearing (14) and the bearing bracket stand of laying (13), on bearing bracket stand (13), be fixedly connected with a cardiogram pen (12) and a pedestal (17), four transversely arranged bearings of laying (16) are housed in bearing bracket stand, horizontal guide rail (18) is installed on the bearing (16), can move as horizontal cross, and can do longitudinally along upright guide rail (11) by bearing (14) and move up and down.Vector loop pen (19) is contained on the horizontal guide rail (18), can do moving of any direction in certain scope, and cardiogram pen (12) then can only be done under the drive of vector loop pen (19) and vertically move.Vector loop garden dish (20) is mounted on the central authorities of demonstration board (10), can do damping on demonstration board rotates, mark has human body face amount hexaxial reference system and normal human's face amount qrs vector ring (21) above the dish of garden, the hand-held vector loop pen of operator is retouched clockwise along qrs vector ring track from the beginning of O point and is taken a round, and the cardiogram pen then can be depicted QRS ripple electrocardiographic wave on the recording chart of log drum.

Claims

1, a kind of cardiogram reprojection principle demonstration instrument, it is characterized in that this demonstrator is made up of demonstration board (10) and log drum (5), it is to be mounted on the demonstration board by its garden heart point that one an electrocardio vector loop garden dish (20) and universal tressel (15) vector loop garden dish is housed on the demonstration board, be marked with the P of human body face amount hexaxial reference system and normal person's face amount at vectorcardiographic loop garden dish (20) subscript, QRS, T vectorcardiographic loop (21), universal tressel (15) is made up of upright guide rail (11) and horizontal guide rail (18), upright guide rail (11) is fixed on the demonstration board, one group of vertical bearing (14) is housed on the guide rail, on the bearing bracket stand (13) of bearing, be fixedly connected with one group and be bearing bracket stand (17) and the bearing (16) that level is laid, horizontal guide rail (18) is contained on the bearing (16), it is a movable guiding rail, one electrocardio vector loop pen (19) is housed on horizontal guide rail, a cardiogram pen (12) is housed on upright guide rail; Log drum is by substrate (2), actuating unit (1), rotation axis (3), (4), drum axle (7), (8) and recording chart (6) are formed, and actuating unit is contained in the pedestal, and main rotary shaft (3) is connected on the output terminal of actuating unit, the drum axle is two garden column casings, be sleeved on the outside of rotation axis, recording chart is an individual layer paper web, surrounds the outside of two drum axles.

2, demonstrator as claimed in claim 1 is characterized in that vectorcardiographic loop garden dish (20) subscript is marked with the vectorcardiographic loop of human body chest face hexaxial reference system and normal person's chest face, or human body abnormal electrocardiogram vector loop (as ventricle hypertrophy, miocardial infarction etc.).

3, demonstrator as claimed in claim 1, the actuating unit (1) that it is characterized in that log drum can be a miniature cocurrent electromotor, also can be a Mainspring type mechanical rotating mechanism.

4, demonstrator as claimed in claim 1 is characterized in that the recording chart () of log drum can be contained on the driven shaft (4) for a paper roll, and paper roll one end is fastened on the main drive shaft (3).