CN2129014Y - Operating microscope - Google Patents

Abstract

The utility model relates to an operation microscope, which belongs to the improvement of the prior operation microscope. The device is characterized in that the device is driven by a stepping motor, a motion mechanism with a set freedom degree direction is provided with a limiting device and a buzzing indicating device, the limiting device consists of a limiting bump on the motion mechanism, a limiting switch for limiting the position of a stroke terminal and a direct-current three-phase stepping motor limiting control circuit, and the limiting control circuit and the buzzing indicating circuit are in full-closed wiring. The automatic stop device has the characteristics of automatically stopping at a limited terminal position, synchronously giving out buzzing indication signals, avoiding the occurrence of rigid clamping stagnation of a movement mechanism and facilitating the adjustment and the use of instruments by an operator.

Description

Operating microscope

The utility model is a kind of surgical operation microscope, belongs to the further improvement to existing surgical operation microscope, relates in particular to the sports limiting technology of controlling and driving surgical operation microscope in each degree of freedom direction.

Same (OPTON) the accurate company limited of Ou Bo was in the surgical operation microscope product of " West Germany Ou Bo is with the Medical Instruments guide " (revised and enlarged edition) issued and its sale in 1989, disclosed is a kind of 50 millimeters straight-line products of stroke of automatically controlled three-dimensional that have, as OPMI 6 SD-FC types and OPMI 6C-FC-XY type.This series products adopts DC servo motor and miniature gear to slow down and campaign-styled guide rail mechanism, during use, the operator does rectilinear motion with foot-operated controlling and driving surgical operation microscope motion on three rectangular coordinates, wherein the rectilinear motion of Z-direction realization microscope is vertically focused and is obtained image clearly, translation in the X-Y surface level makes surgical operation microscope aim at only operative site, thereby provides possibility for real-time focusing in accent machine before performing the operation and the surgical procedure and change aim at the position.But,, thereby cause motion rigidity " clamping stagnation " so the operator often will continue to step gauge tap by the origin operation direction because the motion of surgical operation microscope when moving to the terminal location of stroke on each degree of freedom, does not have spacing suggestion device.This moment, drive motor also was rotated further, and only depended on first order transmission gear to skid on axle to protect gearing part, electric elements to avoid impaired.This gear is carried out transmission by axial elasticity pretightning force and gear face friction, and the slipping protection function during the excessive then mechanism of axial pre tightening force rigidity clamping stagnation is poor, takes place easily that machinery or electric elements damage or transmission accuracy descends.Axial pre tightening force is too small then to influence normal transmission.Extreme position rigidity clamping stagnation is not to take place once in a while in use, all can take place in the operation each time, needs through after the time delay in short-term, and the operator can judge mechanism's clamping stagnation.When the whole energy of operator who lacks experience or operator concentrated on surgical wound surface, the time delay of this clamping stagnation was longer, for the operator makes troubles, had influence on the security of equipment operation and the success of operation.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art and provides a kind of at the qualification terminal location auto stop of movement travel and the surgical operation microscope of the indication of buzzing simultaneously.

The purpose of this utility model can reach by following measure: surgical operation microscope adopts step motor drive, on the motion of setting the degree of freedom direction, be provided with stop means and buzzing indicating device, stop means is made up of the limit switch and the spacing control circuit of direct current three-phase stepper motor of spacing block set on the motion and qualification end-of-travel position, and spacing control circuit and buzzing indicating circuit adopt the totally enclosed type distribution.

The purpose of this utility model can also reach by following measure: the moving plate of the moving component in the straight-line motion mechanism is provided with limit switch, and fixed part is decided on the plate, and there is a spacing block set end point of travel position.The moving component rotary body of rotational motion mechanism is provided with limit switch, and on the fixed part holder, there is a spacing block set end point of travel position.

When the operator steps the end that gauge tap, surgical operation microscope move to qualification, spacing control circuit automatic cut-off motor power supply when the spacing block set that is installed in motion upper limit device contacts with the limit switch contact, the motion stop motion, buzzing indicating circuit work simultaneously stops after sending sound equipment.

Description of drawings:

Fig. 1 is that the utility model is at one degree of freedom direction (Z coordinate) rectilinear motion stop means structural drawing.

Fig. 2 is the spacing control circuit figure of the utility model.

Fig. 3 is the utility model buzzing indicating circuit figure.

The utility model is described in further detail below in conjunction with accompanying drawing:

As shown in Figure 1: 1 is microscope body, 2 is the upper limit projection, 3 is diagonal-cut rack, 4 is arm, and 5 is V-type or half garden camber spherical guide, and 6 is gear case, 7 for having the slide plate of V-type or half garden camber guide rail, 8 for driving spiral gear, and 9 is the lower limit projection, and UL and DL are respectively the upper and lower limit bit switch.During use, rotate when motor drives spiral gears 8 by gear case 6, by with the diagonal-cut rack 3 of spiral gear 8 engagements, microscope body 1 is moved up or down along guide rail 5 directions.When moving downward stroke and being Z1, upper limit projection 2 contacts with limit switch UL contact, then spacing control circuit automatic cut-off motor power supply, and motion stops, and the indicating circuit of buzzing simultaneously sends rhythmical sound equipment, and after the predetermined buzzing time, buzzing stops.Equally, microscope body 1 is moved upward by position shown in Figure 1 and is the Z2 stroke, and then lower position switch DL contacts with lower limit projection 9, shuts down and the buzzing indication.Z1 and Z2 sum are total kilometres Z.

As shown in Figure 2: the spacing control circuit of direct current three-phase stepper motor is made up of go in ring pulsqe distributor and oscillating impulse control circuit and oscillating impulse circuit three parts of three-phase six-beat.Three-phase six-beat goes in ring pulsqe distributor by three AND YHF1, YHF2, and YHF3 and three d type flip flops are formed, and three-phase stepper motor is realized that reversible six clap control.MA, MB and MC represent to connect motor windings A, B and C respectively.When requiring stepper motor just changeing, the winding power-up sequence is A → AB → B → C → CA → A.Counter-rotating then is A → AC → C → CB → B → BA → A.The Q end output of d type flip flop is connected to power amplifier, drives stator winding.The oscillating impulse control circuit is made up of an AND YHF4 and one two input nand gate YF1, joins with the positive and negative control line of pulsqe distributor respectively with an end of door about YHF4.When upper and lower limit bit switch UL, DL are in release conditions, YHF4 is output as " 1 ", and is anti-phase through Sheffer stroke gate, and the CP pulse is passed through smoothly, delivers to the d type flip flop input end, and motor normally moves.When limit switch is pressed by spacing block set, YHF4 is output as " 0 ", and the CP pulse can not be passed through YF1, and the d type flip flop input end does not have pulse signal, and motor stops operating, the motion stop motion.The oscillating impulse circuit is by three not gate F1, F2 and F3, and resistance W, capacitor C, transistor T is formed.The frequency that the resistance of change W and the capacity of C can be regulated oscillating impulse, thereby control step motor speed.

As shown in Figure 3: the buzzing indicating circuit is made up of two multivibrators and a buffering negative circuit.One of them oscillator produces sound signal, drives sound horn, changes R3, R4 and C2 and can regulate oscillation frequency.Another oscillator beat as required produces low frequency signal, in order to audio signal modulation, changes the time interval that R1, R2 and C1 can conditioning signals, realizes rhythmical toot-toot voice signal.Resetting of the buffering negative circuit control of being made up of 74LSO4 and 7,4LS,133 556,556 be basic circuit in a period of time.When stepper motor runs well, be input to 556 4 pin current potentials and be " 1 ", the output of 5 pin also is " 1 ", and the C2 terminal potential is kept high level, does not produce audio oscillation, and loudspeaker are sounding not.When limit switch presses, be input to 556 current potential and be " 0 ", the output of 5 pin also be " 0 ", produces audio oscillation, sound horn, buzzing is indicated.The buzzing indicating circuit left end input signal SL that Fig. 3 provides is from the output signal of the YHF4 of Fig. 2, and obviously, the motor stall of the sound horn in the buzzing indicating circuit and Fig. 2 takes place synchronously simultaneously.

The spacing buzzing indicating structure of rectilinear motion on the one degree of freedom that the utility model accompanying drawing provides scheme, equally also be applicable to fully on other two rectangular coordinates the rectilinear motion stroke limit and around the rotary spacing buzzing of three coordinate axis indication.

The utility model is compared prior art and is had following advantage:

(1) when motion moved to the terminal location of limit switch restriction, motor stopped operating, and motion stops, rigidity clamping stagnation drawback that having avoided motion to produce fully, thus guaranteed the equipment Operation safety.

(2) terminal location and the autostop synchronised in motion provides the buzzing index signal; prompting operation person mechanism has been in the end-of-travel position on this direction of operating; answer reverse operating or readjust the coarse adjustment position of complete machine, in order to effectively utilize the working range of automatically controlled fine setting campaign.

(3) work as the operator--the hand of operative doctor, pin, when eye is all worked nervously simultaneously, acoustic signal has been excavated people's auditory function fully, has made things convenient for widely the operator.

Claims (6)

1, a kind of surgical operation microscope, comprise that surgical operation microscope is at the motion of each degree of freedom direction and the stop means of stroke terminal, it is characterized in that adopting step motor drive, on the motion of setting the degree of freedom direction, be provided with stop means and buzzing indicating device, stop means is made up of the limit switch and the spacing control circuit of direct current three-phase stepper motor of spacing block set on the motion and qualification end-of-travel position, and spacing control circuit and buzzing indicating circuit adopt the totally enclosed type distribution.

2, surgical operation microscope as claimed in claim 1 is characterized in that described motion comprises straight-line motion mechanism, is provided with limit switch on the moving plate of moving component, decides plate up stroke endpoint location place at fixed part spacing block set is housed.

3, surgical operation microscope as claimed in claim 1 is characterized in that described motion comprises rotational motion mechanism, is provided with limit switch on the moving component rotary body, and spacing block set is equipped with at the place at fixed part holder up stroke endpoint location.

4, surgical operation microscope as claimed in claim 1 is characterized in that the spacing control circuit of direct current three-phase stepper motor is made up of go in ring pulsqe distributor and oscillating impulse control circuit and oscillating impulse circuit of three-phase six-beat.

5,, it is characterized in that the buzzing indicating circuit is made up of two multivibrators and one buffering negative circuit as claim 1 or 2 or 3 described surgical operation microscopes.

6,, it is characterized in that limit switch generally adopts microswitch as claim 1 or 2 or 3 described surgical operation microscopes.

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