Drive control system and drive control method of electric endoscope anastomat
Technical Field
The invention relates to the technical field of medical instruments, in particular to a drive control system and a drive control method of an electric endoscope anastomat.
Background
The anastomat is a device used in medicine for replacing manual suturing, a firing handle needs to be manually held for many times in the current mainstream manual endoscope anastomat, a nail bin assembly is pushed to be closed and formed through a mechanical traditional mechanism of the anastomat, and the suturing tissue is easy to be pulled and torn due to improper operation; the electric anastomat is simple and stable to operate, researches show that compared with a manual anastomat, bleeding complications are reduced by nearly half when a surgeon uses the electric anastomat, but when the conventional electric anastomat is used, medical workers cannot know the electric quantity of the anastomat and the running state of the anastomat in real time, and how to design the anastomat which can enable the medical workers to master the electric quantity and the running state of the instrument is a problem to be solved by technical workers in the field.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a driving control system and a driving control method for an electric endoscopic stapler.
In order to solve the technical problem, the invention provides a driving control system of an electric endoscope anastomat, which comprises the following components: comprises a shell;
the shell comprises an outer shell and an inner shell arranged inside the outer shell;
the cutting device comprises a shell, a cutting driving part, a motor, a cutting driving part, a cutting knife and a shielding part, wherein the motor and the cutting driving part are arranged in the shell, the input end of the cutting driving part is connected with the output shaft of the motor, the output end of the cutting driving part is connected with the rear end of the driving part, the front end of the driving part is connected with the cutting knife, and the shielding part is arranged on the outer side surface of the rear end of the driving part; a front position induction switch and a rear position induction switch are also arranged in the shell, and are positioned on the moving path of the shielding piece; the shell is also provided with a firing driving button which can rotate relative to the shell;
a support shaft is further arranged inside the shell; a closed locking plate is arranged at the lower part of the shell, and a closed locking groove is formed in the closed locking plate; the closing handle is sleeved on the supporting shaft and can rotate relative to the supporting shaft, and a closing positioning piece is arranged at the lower end of the closing handle; the closing handle is connected with the rear end of the outer sleeve through a closing driving part, and the front end of the outer sleeve is connected with the steering sleeve; the nail box base is arranged inside the steering sleeve; the nail abutting seat is arranged inside the steering sleeve and is connected with the steering sleeve; the nail abutting seat is positioned above the nail box base and is movably connected with the nail box base;
the drive control system is disposed inside the housing, and includes: the display device comprises a switching circuit, a display circuit and a power supply;
the switch circuit comprises a clamping contact switch and a triggering contact switch; the trigger contact switch is positioned on a rotating path of the trigger driving button; the pinch contact switch is in a path of movement of the closure handle;
the display circuit comprises an electric quantity display component, a cutter position display component and a clamping state display element; the electric quantity display assembly comprises a first electric quantity state display element and a second electric quantity state display element; the tool position display assembly comprises a first tool position display element, a second tool position display element and a third tool position display element;
the power supply, the front position inductive switch, the rear position inductive switch, the first electric quantity state display element, the second electric quantity state display element, the first cutter position display element, the second cutter position display element, the third cutter position display element, the clamping state display element, the clamping contact switch, the firing contact switch and the motor are all connected with a controller.
Preferably, a retraction button is also mounted on the housing, the retraction button being movable relative to the housing; the switch circuit further comprises a back-off contact switch connected with the controller, wherein the back-off contact switch is positioned on a moving path of the back-off button.
Furthermore, the electric quantity display assembly further comprises a third electric quantity state display element, and the third electric quantity state display element is connected with the controller.
Furthermore, the first electric quantity state display element is a green light, the second electric quantity state display element is a red light, and the third electric quantity state display element is a yellow light; the first cutter position display element is a green light, the second cutter position display element is a red light, and the third cutter position display element is a yellow light; the clamping state display element is a green light.
Preferably, the driving control system of the electric endoscope anastomat further comprises a driving circuit, the driving circuit comprises a relay and a double-pole double-throw switch which are connected, and the double-pole double-throw switch is connected with a signal input port of the motor; the relay is connected with the controller.
Preferably, the driving control system of the electric endoscope anastomat further comprises a reset circuit and a register, and the reset circuit and the register are both connected with the controller; and recording the times of the shielding piece entering the front position induction switch and the rear position induction switch in the register.
The invention discloses a drive control method of an electric endoscope anastomat, which adopts a drive control system of the electric endoscope anastomat and comprises the following steps:
1) the power supply is accessed, the electric quantity display component is started, and when the electric quantity monitored by the controller is within a preset electric quantity range, the first electric quantity state display element is normally on, and then the step 2) is carried out; when the controller monitors that the electric quantity is exhausted, the second electric quantity state display element is normally on, and the power supply needs to be replaced;
2) when the cutting knife is at the initial position, the shielding piece on the driving piece is positioned in the rear position induction switch, the controller acquires an activation signal of the rear position induction switch, and the first knife position display element flicks to perform the step 3); when the cutting knife is not at the initial position, the controller does not acquire an activation signal of the rear position induction switch, and the cutting knife is not at the initial position to perform the operation of retracting the cutting knife;
3) after a nail bin in a nail box base is installed, rotating the closing handle, inserting a closing positioning piece on the closing handle into a closing locking groove, driving the outer sleeve to move forwards through a closing driving part by the closing handle, driving the steering sleeve to move forwards by the outer sleeve, driving the nail abutting seat to rotate towards the direction of closing with the nail box base by the steering sleeve, closing the nail abutting seat and the nail box base, activating the clamping contact switch by the closing handle, acquiring an activation signal of the clamping contact switch by the controller, controlling a clamping state display element to flash by the controller, and performing step 4);
4) the method comprises the following steps that a trigger driving button is pressed down, the trigger driving button activates a trigger contact switch, a controller acquires an activation signal of the trigger contact switch, the controller controls a first cutter position display element to be normally on, the controller drives a motor to rotate forward, the motor drives a driving piece to move forward through a cutting transmission part, and the driving piece drives a cutter to move forward; when the shielding piece on the driving piece is positioned in the front position induction switch, the controller acquires an activation signal of the front position induction switch, and the controller drives the motor to rotate reversely; when the shielding piece on the driving piece returns to the rear position induction switch, the controller acquires an activation signal of the rear position induction switch, at the moment, the cutting knife is finished running, and the controller controls the clamping state display element to be normally on; carrying out step 5);
5) the closed handle is rotated, the closed positioning piece on the closed handle is withdrawn from the closed locking groove, the clamping contact switch is not activated, the controller controls the clamping state display element to be extinguished, and the controller controls the first cutter position display element to be flickered; return to step 3).
Preferably, when the backspacing button is pressed, the backspacing button activates a backspacing contact switch, the controller acquires an activation signal of the backspacing contact switch, the controller drives the motor to rotate reversely, and the motor drives the driving member to move backwards through the cutting transmission component.
Preferably, the third knife position display element flashes when both the front position sensing switch and the rear position sensing switch are not activated and the firing contact switch is not activated.
Preferably, the second tool position display element flashes when the controller monitors a voltage overload of the drive control system.
As described above, the driving control system and the driving control method of the electric endoscopic stapler according to the present invention have the following advantages:
according to the drive control system of the electric endoscope anastomat, after the trigger drive button is pressed down and the trigger contact switch is activated, the controller drives the motor to rotate forwards, the motor drives the driving piece to move forwards through the cutting transmission part, and the driving piece drives the cutting knife to move forwards, so that the physical consumption of medical staff in an operation can be reduced, the burden of the medical staff is reduced, and errors in the operation process are reduced; the motor is adopted to drive the cutting knife, so that a driving control system of the electric endoscope anastomat can provide continuous strong cutting force, the electric endoscope anastomat is suitable for various operation environments, and medical accidents caused by cutting errors are reduced; medical personnel grasp drive control system's the electric quantity condition through the electric quantity display subassembly, and medical personnel grasp drive control system's cutting knife position through cutter position display subassembly, and medical personnel grasp through the clamp state display element and support the nail seat and whether nail casket base is in the closure state, then medical personnel can grasp the operation process, accords with humanized design theory.
Drawings
Fig. 1 is a circuit diagram of a driving control system of the electric endoscopic stapler according to the embodiment.
Fig. 2 is a schematic view of the external structure of the electric endoscopic stapler of the present embodiment when the staple supporting seat and the staple cartridge base are closed.
Fig. 3 is a schematic structural diagram of the cutting transmission part of the electric endoscope anastomat of the embodiment without a shell.
Fig. 4 is an enlarged schematic view of a structure shown in fig. 3.
Fig. 5 is a schematic perspective view of the cutting transmission part of the electric endoscope stapler of the present embodiment without a housing.
Fig. 6 is a schematic view of the external structure of the electric endoscopic stapler with the staple supporting seat and the staple cartridge base opened according to the embodiment.
Fig. 7 is an enlarged schematic view of the structure at B of fig. 6.
Fig. 8 is a schematic structural diagram of the closing driving part of the electric endoscope stapler of the embodiment when the housing is not installed and the nail abutting seat and the nail box base are opened.
Fig. 9 is an enlarged schematic view of the structure at C of fig. 8.
Fig. 10 is a schematic structural diagram of the closing driving part when the electric endoscope stapler of the embodiment is not provided with a housing and the nail abutting seat and the nail box base are closed.
Fig. 11 is an enlarged schematic view of fig. 10 at D.
Fig. 12 is a schematic structural view of the closing driving part when the electric endoscope stapler of the embodiment is provided with a housing and the nail abutting seat and the nail box base are closed.
Fig. 13 is an enlarged schematic view of fig. 12 at E.
Fig. 14 is a schematic structural view of the electric endoscopic stapler according to the present embodiment when the closing handle contacts the pinch contact switch.
Fig. 15 is a schematic diagram of a driving control system of the electric endoscopic stapler of the present embodiment under the control of a controller.
Description of the reference numerals
100 case
110 outer casing
120 inner shell
210 motor
220 cutting transmission part
221 driving gear
222 driven gear
230 driving piece
231 barrier
240 cutter
251 front position induction switch
252 rear position sensing switch
260 percussion driving knob
270 backspace button
310 support shaft
320 closed locking plate
321 closed locking groove
330 closing handle
331 closed positioning element
340 closure drive member
341 outer tube locking plate
342 closing link
343 spring
350 outer sleeve
360 turn to sleeve pipe
370 nail box base
380 nail abutting seat
400 switching circuit
410 clamping contact switch
420 trigger contact switch
430 return contact switch
500 display circuit
510 electric quantity display assembly
511 first electric quantity state display element
512 second electric quantity state display element
513 third state of charge display element
520 tool position display assembly
521 first tool position display element
522 second tool position display element
523 third tool position display element
530 clamping state display element
600 power supply
700 controller
811 voltage stabilization chip
820 driving circuit
821 Relay
822 double-pole double-throw switch
910 reset circuit
920 register
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to the attached drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1 to 15, in the driving control system of the electric endoscopic stapler of the present embodiment, the electric endoscopic stapler: comprises a shell 100;
the case 100 includes an outer case 110 and an inner case 120 disposed inside the outer case 110;
the inside of the housing 110 is further provided with a motor 210 and a cutting transmission part 220, the input end of the cutting transmission part 220 is connected with the output shaft of the motor 210, the output end of the cutting transmission part 220 is connected with the rear end of a driving part 230, the front end of the driving part 230 is connected with a cutting knife 240, and the outer side surface of the rear end of the driving part 230 is provided with a shielding part 231; a front position sensing switch 251 and a rear position sensing switch 252 are further disposed inside the housing 110, and both the front position sensing switch 251 and the rear position sensing switch 252 are located on a moving path of the shutter 231; a firing drive knob 260 is further mounted on the housing 110, and the firing drive knob 260 can rotate relative to the housing 110; the front position sensing switch 251 and the rear position sensing switch 252 are both photoelectric limit switches;
the inside of the housing 110 is further provided with a support shaft 310; a closed locking plate 320 is arranged at the lower part of the shell 110, and a closed locking groove 321 is arranged on the closed locking plate 320; the closing handle 330 is sleeved on the supporting shaft 310, the closing handle 330 can rotate relative to the supporting shaft 310, and the lower end of the closing handle 330 is provided with a closing positioning piece 331; the closing handle 330 is connected with the rear end of the outer sleeve 350 through the closing driving part 340, and the front end of the outer sleeve 350 is connected with the steering sleeve 360; the magazine base 370 is disposed inside the turn sleeve 360; the nail abutting seat 380 is arranged inside the steering sleeve 360 and is connected with the steering sleeve 360; the nail abutting seat 380 is positioned above the nail box base 370, and the nail abutting seat 380 is movably connected with the nail box base 370;
the driving control system, which is disposed inside the housing 110, includes: a switching circuit 400, a display circuit 500, and a power supply 600;
a switching circuit 400 including a pinch contact switch 410 and a fire contact switch 420; the firing contact switch 420 is in the rotational path of the firing drive knob 260; pinch contact switch 410 is in the path of movement of closing handle 330;
a display circuit 500 including a power level display unit 510, a tool position display unit 520, and a clamping state display unit 530; the power display component 510 includes a first power state display element 511 and a second power state display element 512; tool position display component 520 includes a first tool position display element 521, a second tool position display element 522, and a third tool position display element 523;
the power supply 600, the front position sensing switch 251, the rear position sensing switch 252, the first power state display element 511, the second power state display element 512, the first cutter position display element 521, the second cutter position display element 522, the third cutter position display element 523, the clamping state display element 530, the clamping contact switch 410, the firing contact switch 420 and the motor 210 are all connected with the controller 700.
In the drive control system of the electric endoscope anastomat, after the trigger drive button 260 is pressed and the trigger contact switch 420 is activated, the controller 700 drives the motor 210 to rotate forwards, the motor 210 drives the driving part 230 to move forwards through the cutting transmission part 220, and the driving part 230 drives the cutting knife 240 to move forwards, so that the physical consumption of medical staff in the operation can be reduced, the burden of the medical staff is reduced, and the error in the operation process is reduced; the motor 210 is adopted to drive the cutting knife 240, so that a driving control system of the electric endoscope anastomat can provide continuous strong cutting force, the electric endoscope anastomat is suitable for various operation environments, and medical accidents caused by cutting errors are reduced; medical personnel grasp drive control system's electric quantity condition through electric quantity display subassembly 510, and medical personnel grasp drive control system's cutting knife 240 position through cutter position display subassembly 520, and medical personnel grasp through clamping state display element 530 and support whether nail seat 380 and nail casket base 370 are in the closure state, then medical personnel can grasp the operation process, accords with humanized design theory.
A back button 270 is also mounted on the housing 110, the back button 270 being movable relative to the housing 110; the switch circuit 400 further includes a back contact switch 430 connected to the controller 700, the back contact switch 430 being in a moving path of the back button 270. When the backspacing button 270 is pressed, the backspacing button 270 activates the backspacing contact switch 430, the controller 700 obtains an activation signal of the backspacing contact switch 430, the controller 700 drives the motor 210 to rotate reversely, the motor 210 drives the driving member 230 to move backwards through the cutting transmission part 220, and then the driving member 230 drives the cutting knife 240 to move backwards.
The power display assembly 510 further includes a third power state display element 513. the third power state display element 513 is coupled to the controller 700. When the power monitored by the controller 700 is not within the preset power range, the third power status display element 513 is normally on to indicate that the power supply 600 can be replaced.
The first state of charge display element 511 is a green light, the second state of charge display element 512 is a red light, and the third state of charge display element 513 is a yellow light; the first tool position display element 521 is a green light, the second tool position display element 522 is a red light, and the third tool position display element 523 is a yellow light; the clamped-closed state display element 530 is a green light. The structure can be convenient for medical personnel to distinguish various operation conditions of the drive control system. The first, second, third and third power status display elements 511, 512, 513, 521, 522, 523 and 530 are all LED lights.
The driving control system of the electric endoscope anastomat further comprises a voltage conversion circuit, the voltage conversion circuit comprises a voltage stabilizing chip 811, a receiving end of the voltage stabilizing chip 811 is connected with the power supply 600, and an output end of the voltage stabilizing chip 811 is connected with the controller 700. By means of the voltage conversion circuit, a stable voltage can be passed for the controller 700.
The driving control system of the electric endoscope anastomat further comprises a driving circuit 820, the driving circuit 820 comprises a relay 821 and a double-pole double-throw switch 822 which are connected, and the double-pole double-throw switch 822 is connected with a signal input port of the motor 210; the relay 821 is connected to the controller 700. The controller 700 controls the motor 210 to rotate forward and backward through the driving circuit 820.
The closure driving part 340 includes an outer tube locking plate 341, a closure link 342, and a spring 343; the outer tube locking plate 341 is disposed in the inner shell 120, the rear end of the outer tube locking plate 341 is hinged to one end of the closing link 342, and the other end of the closing link 342 is hinged to the upper end of the closing handle 330; the rear end of the outer sleeve 350 penetrates into the inner housing 120, and the rear end of the outer sleeve 350 is connected with the outer tube locking plate 341; the outer sleeve 350 is sleeved with a spring 343, and the spring 343 is located between the inner housing 120 and the front end of the outer tube locking plate 341. After the closing handle 330 is pressed down such that the closing position 331 of the lower end of the closing handle 330 is inserted into the closing locking groove 321 of the closing locking plate 320, the closing handle 330 is released and the closing handle 330 is locked by the closing locking plate 320; the closing handle 330 pushes the outer tube locking plate 341 to move forward through the closing link 342, the outer tube locking plate 341 drives the outer tube 350 to move forward, the outer tube 350 pushes the turning sleeve 360 to move forward through the sleeve connecting piece, the turning sleeve 360 drives the nail abutting seat 380 to rotate towards the direction of folding with the nail box base 370, the nail abutting seat 380 and the nail box base 370 are closed, and at the moment, the tissue is squeezed by the nail abutting seat 380.
The cutting transmission unit 220 is disposed inside the housing 110, and the cutting transmission unit 220 includes a driving gear 221 and a driven gear 222; the output end of the motor 210 is connected with the driving gear 221; the driving gear 221 and the driven gear 222 are both rotatable; the driving gear 221 is engaged with the driven gear 222; the central axis of the driving gear 221 is perpendicular to the central axis of the driven gear 222; the central axis of the driving gear 221 is perpendicular to the front-rear direction of the housing 100; the driven gear 222 is provided with a threaded hole; the driving member 230 is a screw rod connected with the screw hole. The motor 210 drives the driving gear 221 to rotate, the driving gear 221 drives the driven gear 222 to rotate, the driven gear 222 drives the screw rod to move, and the cutting transmission part 220 is simple in structure and convenient to transmit.
The invention discloses a drive control method of an electric endoscope anastomat, which adopts a drive control system of the electric endoscope anastomat and comprises the following steps:
1) the power supply 600 is connected, the voltage conversion circuit converts the voltage of the power supply 600 and then transmits the converted voltage to the controller 700, and the switch circuit 400 and the display circuit 500 start to operate normally; the electric quantity display component 510 is started, when the electric quantity monitored by the controller 700 is in a preset electric quantity range, the first electric quantity state display element 511 lights the green light normally, and then step 2) is performed; when the controller 700 detects that the power is used up, the second power status display element 512 usually lights up red light, and the power supply 600 needs to be replaced; when the power monitored by the controller 700 is not within the preset power range, the third power status display element 513 is usually bright yellow, and the power supply 600 needs to be replaced;
2) when the cutting knife 240 is at the initial position, the shielding piece 231 on the driving piece 230 is in the rear position sensing switch 252, and the controller 700 obtains the activation signal of the rear position sensing switch 252, then the first knife position display element 521 flashes green light, and step 3) is performed; when the cutting knife 240 is not in the initial position, the controller 700 does not obtain the activation signal of the rear position sensing switch 252, and the cutting knife 240 is not in the initial position, so as to perform a knife retracting operation;
3) after the nail bin in the nail box base 370 is installed, the closing handle 330 is rotated, the closing positioning piece 331 on the closing handle 330 is inserted into the closing locking groove 321, the closing handle 330 drives the outer sleeve 350 to move forward through the closing driving part 340, the outer sleeve 350 pushes the turning sleeve 360 to move forward, the turning sleeve 360 drives the nail abutting seat 380 to rotate towards the direction of closing with the nail box base 370, the nail abutting seat 380 and the nail box base 370 clamp tissues after being closed, meanwhile, the closing handle 330 activates the clamping contact switch 410, the controller 700 acquires an activation signal of the clamping contact switch 410, the controller 700 controls the clamping state display element 530 to flash green light to indicate that the firing operation can be performed, meanwhile, the controller 700 supplies power to the driving circuit 820, the driving circuit 820 is electrified to operate, and the step 4) is performed;
4) the trigger driving button 260 is pressed down, the trigger driving button 260 activates the trigger contact switch 420, the controller 700 obtains an activation signal of the trigger contact switch 420, the controller 700 controls the first knife position display element 521 to normally emit green light to indicate that the trigger operation is normal, the controller 700 sends forward current to the motor 210 through the driving circuit 820, the motor 210 rotates forward, the motor 210 drives the driving member 230 to move forward through the cutting transmission part 220, and the driving member 230 drives the cutting knife 240 to move forward; when the shutter 231 on the driving member 230 is in the front position sensing switch 251, the controller 700 obtains an activation signal of the front position sensing switch 251, the controller 700 supplies a reverse current to the motor 210 through the driving circuit 820, and the motor 210 rotates reversely; when the shutter 231 on the driving member 230 returns to the rear position sensing switch 252, the controller 700 obtains an activation signal of the rear position sensing switch 252, at this time, the cutting knife 240 finishes running, the controller 700 controls the first knife position display element 521 to keep a normally bright green light, and the controller 700 controls the clamping state display element 530 to normally bright green light to indicate that the firing operation runs out; the controller 700 stops supplying power to the driving circuit 820, and the driving circuit 820 is powered off, and the step 5) is performed;
5) when the closing handle 330 is rotated, the closing positioning piece 331 on the closing handle 330 withdraws from the closing locking groove 321 to release the tissue, the pinch contact switch 410 is not activated, the controller 700 controls the pinch state display element 530 to be extinguished, the controller 700 controls the first knife position display element 521 to flash green light to indicate that the firing operation can be performed, the firing operation is reset, and the driving control system returns to the initial state, and returns to the step 3).
When the backspacing button 270 is pressed, the backspacing button 270 activates the backspacing contact switch 430, the controller 700 obtains an activation signal of the backspacing contact switch 430, the controller 700 transmits a reverse current to the motor 210 through the driving circuit 820, and the motor 210 rotates reversely; the motor 210 drives the driving member 230 to move backward through the cutting transmission member 220, so as to retract the knife.
When neither the front position sensing switch 251 nor the rear position sensing switch 252 is activated, and the firing contact switch 420 is not activated, the third knife position display element 523 flashes yellow to indicate that the firing drive knob 260 has been released from travel.
The driving control system of the electric endoscope anastomat further comprises a reset circuit 910 and a register 920, and the reset circuit 910 and the register 920 are connected with the controller 700; the number of times the shutter 231 enters the front position sensing switch 251 and the rear position sensing switch 252 is recorded in the register 920. When the cutting knife 240 is triggered once and the operation of the cutting knife 240 is finished, the controller 700 controls the data in the register 920 to be cleared; returning to step 3), after the installation of the magazine in the magazine base 370 is completed, the reset circuit 910 outputs a reset signal to the controller 700, and the controller 700 drives the switch circuit 400 and the display circuit 500 to return to the initial state.
When the controller 700 monitors a voltage overload of the drive control system, the second tool position display element 522 flashes to indicate an abnormal state.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.