CN1072082A

CN1072082A - The control device of electric plaster bandage saw

Info

Publication number: CN1072082A
Application number: CN 91110727
Authority: CN
Inventors: 杨章民; 周纯美
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-11-09
Filing date: 1991-11-09
Publication date: 1993-05-19

Abstract

A kind of moment of cutting the lining material skin of Gypsum Fibrosum band at electric saw is interrupted the control device of electric saw working power immediately, the lining material skin that ties up to the Gypsum Fibrosum band presets a conductive foil with the interior interlayer of absorbent cotton, when electric saw saw blade contact conductive foil, trigger a relay control device, make it to interrupt immediately the working power of electric saw; And a kind of reset apparatus drives relay control device with automatic reset mode or passive reset mode, recloses interrupted electric saw working power.

Description

The control device of electric plaster bandage saw

The invention relates to a kind of control device of electric plaster bandage saw, particularly make the automatic out-of-work control device of electric saw about a kind of moment that can cut lining materials such as medical gypsum at electric saw.

The human limb may be because of being fractured by external force, and neonatal limbs also may be congenital or the deformity phenomenon take place the day after tomorrow.For the therapeutic modality of this type of limb fracture or deformity, usually be to apply fracture or the deformity place that twines in limbs at present, and make the Gypsum Fibrosum sclerosis, so that injured limbs be not subjected to rapider recovery under the ectocine with lining materials such as medical gypsums.

After the affected part of injured limb is coated a few days, must make and cut Gypsum Fibrosum with a chainsaw and its dismounting, so that observe, and where necessary, can continue to impose other drug or undergo surgery treatment.

Generally speaking, existing electric plaster bandage saw is with visual or go into the degree of depth with the saw that operator's experience is measured saw blade in use, therefore, cut Gypsum Fibrosum and does not injure patient skin and muscle, needs skill.Even carry out sawing process very carefully, also usually unexpectedly sawing injury skin or muscle, therefore cut Gypsum Fibrosum before, the patient has probably puzzled sense, the doctor also can worry, thereby the process of sawing Gypsum Fibrosum is spun out.Especially when neonate, child and the patient that do not have an Autonomous Control ability are implemented the operation of sawing Gypsum Fibrosum, easier in the patient moves its limbs or because of limbs independently do not tremble, and cause producing the accidental situation of electric saw incised wound pars affecta skin or muscle.

Therefore as seen, a kind ofly can make the automatic out-of-work control device of electric saw in the moment that electric saw cuts Gypsum Fibrosum, be that medical circles press for.

Purpose of the present invention promptly is to provide a kind of control device of guaranteeing safe electric plaster bandage saw, and this device can cut the automatic working power of cutting off electric saw of moment of Gypsum Fibrosum at electric saw, it is quit work, to avoid injuring patient's skin or muscle.

Another object of the present invention is to provide the electric plaster bandage saw control device of above-mentioned pattern, make it to eliminate effectively the patient and accidentally injure skin or the deutero-fear of muscle because of worried electric saw, promote its security, and can increase doctor's self-confidence, accidentally injure skin or the caused unnecessary medical tangle of muscle thereby can effectively eliminate because of electric saw.

Another purpose of the present invention is to provide the electric plaster bandage saw control device of above-mentioned pattern, make it can interrupt the working power of electric saw automatically in the moment of cutting Gypsum Fibrosum, thereby no longer need quite skilled medical personnel to operate, cut operation and can implement Gypsum Fibrosum voluntarily, thereby can effectively alleviate doctor and senior nurse's work load by general nurse or staff.

Electric plaster bandage saw control device provided by the present invention, be between the gypsic horizon of medical Gypsum Fibrosum band and absorbent cotton, to preset a conductive foil, this conductive foil has at least some to extend to outside the Gypsum Fibrosum band, and is connected to this control device with a control loop between this electric saw and conductive foil; When electric saw cuts gypsic horizon and moment of contacting with conductive foil, it is this control loop of conducting and trigger a relay in this control device, make relay skip to normally closed contact, and can cut off the working power of electric saw immediately, accidentally injure pars affecta skin or muscle to avoid electric saw by a normal opened contact.Also comprise one in this control device in order to the reset apparatus that recloses electric saw working power and light-type or alarm formula caution device with warning function.

Consult the detailed description and the accompanying drawing thereof of following relevant preferred embodiment of the present invention, can further understand technology contents of the present invention and purpose and effect.Relevant accompanying drawing is:

Fig. 1 is the three-dimensional view of electric plaster bandage saw control device first embodiment of the present invention;

Fig. 2 is similar to Fig. 1, is the three-dimensional view of this electric plaster bandage saw control device second embodiment, has only used automatic replacement control device among Fig. 2, to replace the foot-operated passive replacement control device among Fig. 1;

Fig. 3 is the amplification profile of being done along the 3-3 line among Fig. 1;

Fig. 4 is the circuit block diagram of this control device first embodiment; And

Fig. 5 is the circuit block diagram of this control device second embodiment.

Please consult Fig. 1 and Fig. 3 simultaneously.In order to the Gypsum Fibrosum band 80 on the limb fracture place that envelopes the patient or the unusual affected part 90, include the tearable fragility absorbent cotton internal layer 82 that one deck contacts with pars affecta skin, and one deck can meet the skin 84 of the lining material of water hardening, and this lining outer 84 is generally lining materials such as medical Gypsum Fibrosum, resin.Preset a conductive foil 10 at absorbent cotton internal layer 82 and outer 84 of lining, this conductive foil 10 is to make with the material that does not influence X-ray interpretation and diagnosis and have a satisfactory electrical conductivity, for example tinfoil paper, aluminium foil etc.Conductive foil 10 has and stretches out the outer elongated end 12 of Gypsum Fibrosum band 80, and this elongated end 12 preferably bends towards the outside of Gypsum Fibrosum band 80, and is connected on the control device in the power control box 20 with anchor clamps 14 and lead 16.In order to cut the electric saw 86 of this lining outer 84, comprise motor (not shown) and a zigzag saw blade 88 that is contained on the motor reel 87 that a high speed is vibrated back and forth or rotated, this 87 also is connected on the control device in the control box 20 by a lead 18, thereby forms a control loop with conducting strip 10.Electric saw 86 is plugged on by plug 89 on the socket 22 of control box and forms electrical connection, and by the motor of described control device supply working power to this electric saw 86.Also be connected with the following foot-operated panel 28 of selector switch 24, caution device 26 and a passive reset apparatus on the control device of control box 20 with narration; In addition, this control box 20 also is plugged on the extraneous power supply by a plug 30.Caution device 26 is a kind of electrodynamic type or electronic type attention device, makes can give a warning light or sound of time spent; As when being caution light, then this attention device preferably be installed on the surface of control box 20, on the casing surface of electric saw 86 or on other similar position, so that when cutting, can see at an easy rate.

See also Fig. 2, this illustrates second embodiment of this electric plaster bandage saw control device, and it is roughly approximate with first embodiment shown in Figure 1, and is only replaced the foot-operated panel 28 of the passive reset apparatus among Fig. 1 by the adjustment knob 32 of an automatic reset device.

See also Fig. 4, the figure shows out the circuit box of this electric plaster bandage saw control device first embodiment.Above-mentioned control device comprises power supply unit 40, selector switch 24, send the caution device 26 of caution light in order to the relay control device 42 that interrupts electric saw motor 85 working powers in the moment of electric saw saw blade 88 contact conductive foils 10 immediately, when the saw blade 88 contact conducting strips 10 and in order to the passive reset apparatus 46 of conducting electric saw motor 85 working powers again.Above-mentioned relay control device 42 is made up of relay 48, driver 50 and control circuit 52; Passive reset apparatus 46 then is made up of above-mentioned foot-operated panel 28 and reset circuit 54.

Power supply unit 40 is started in the time of can being connected to extraneous power supply by above-mentioned plug 30 and is exported a power supply, this power supply can be controlled by selector switch 24, and selects to make this power supply directly to be supplied to electric saw motor 85 or be supplied to electric saw motor 85 again after relay control device 42 controls by the operator.When the operator switches to the first contact A with selector switch 24, i.e. across-the-line starting electric saw motor 85 continuous runnings, and relay control device 42, caution device 26 and passive reset apparatus 46 are not all worked.When the operator switched to the second contact B with selector switch 24, this power supply promptly directly was not supplied to electric saw motor 85, but was input to the common joint C of relay 48, and this relay 48 is positioned on the normally closed contact NC usually, and electric saw motor 85 can't be worked; In addition, power supply unit 40 is also exported another power supply to control circuit 52, makes control circuit 52 remain on the state of alert that can accept the triggering signal of passive reset apparatus 46 at any time and work; Therefore, when the operator steps on the foot-operated panel 28 of passive reset apparatus 46, can make reset circuit 54 trigger control circuit 52, and starting driver 50 work and drive relay 48 and produce a change action, make relay 48 by normally closed contact NC jumper connection to normal opened contact NO; So, the power supply of being supplied by power supply unit 40 is promptly often opened contact NO and is supplied to electric saw motor 85 and makes it running from common joint C.At this moment, the operator can operate electric saw 86 Gypsum Fibrosum that goes into effect and cut operation.To cut the lining of above-mentioned Gypsum Fibrosum outer and contact moment with conductive foil 10 when electric saw saw blade 88, be that conducting is by saw blade 88, conductive foil 10, the control loop that caution device 26 and control circuit 52 are formed, caution device 26 is started working to send caution light or sound, and make control circuit 52 end the work of driver 50 immediately, making relay 48 not work because of driver 50 makes it by the original normally closed contact NC of normal opened contact NO rebound, and then the working power of relaying electric saw motor 85, electric saw 86 is shut down immediately, thereby avoid electric saw 86 to injure patient skin or muscle.When the operator desires to restart electric saw 86, only must step on foot-operated panel 28 as mentioned above, make replacement road 54 trigger control circuit 52 again, and make driver 50 drive relay 48 once more, make it by normally closed contact NC jumper connection to normal opened contact NO, once more the working power of conducting electric saw motor 85.

This relay can be solid state or mechanical control circuit.What in fact caution device 26 was drawn among the figure is a kind of caution bulb that sends light, but this caution device also can be a kind of buzzer of sounding.

See also Fig. 5, the figure shows out the circuit box of second embodiment of this electric plaster bandage saw control device.Plug 30 among Fig. 5, power supply unit 40, selector switch 24, relay control device 42, caution device 26, electric saw 86 and conductive foil 10 etc. are all identical with counter element among Fig. 4, have wherein only replaced the passive reset apparatus 46 among Fig. 4 with automatic reset device 56.This automatic reset device 56 is a kind of adjustable pulse generator, its moment at electric saw saw blade 88 contact conductive foils 10 is triggered and exports a pulse to relay control device 42, this relay control device 42 is during the pulse input, its relay 48 skips back to normally closed contact NC by normal opened contact NO, thereby interrupt the working power of electric saw motor 85 immediately, to avoid injuring patient's skin or muscle; Produce end of a period time delay of pulse when automatic reset device 56 after, relay control device 42 is because of the no pulse input, thereby make its relay 48 skip to normal opened contact NO by normally closed contact NC, thus reclose the working power of electric saw motor 85, make it to work on.The length of the time delay of the pulse that automatic reset device 56 produces can and be adjusted by a variable resistance 58 its resistance values of change, and the operator can change the resistance value of this variable resistance 58 with the above-mentioned adjustment knob 32 that is installed on the control box 20.

The operator uses the mode of operation of Fig. 1 and electric plaster bandage saw control device first embodiment shown in Figure 4 as follows:

(1) utilize plug 30 with extraneous power supply Access Control box 20;

(2) plug 89 with electric saw 86 is plugged on the socket 22 of control box 20, is electrically connected to form;

(3) will clamp the elongated end 12 of conductive foil 10 with the lead 16 of anchor clamps 14, and another lead 18 will be fixed on the electric saw 86;

(4) selector switch 24 is switched to the position of contact B;

(5) trample foot-operated panel 28 with foot, so as to the working power of conducting electric saw 86, the bulb of caution device 26 extinguishes simultaneously, and is errorless with this action of confirming control box 20;

(6) make the lining skin 84 that cuts Gypsum Fibrosum band 80 with a chainsaw; When electric saw saw blade 88 contacts moment with conductive foil 10, the working power of electric saw 86 is interrupted immediately, thereby can't work, thereby avoids injuring patient's skin or muscle; Simultaneously, the bulb of caution device 26 is also lighted, so as to caution operator shut-down operation electric saw 86;

When (7) continuing operation electric saw 86, only must trample foot-operated panel 28 with foot as desire, the working power of conducting electric saw 86 again, thereby can continue to operate electric saw 86; Simultaneously, the bulb of caution device 26 also extinguishes thereupon;

(8) heavily cover (6) and (7), till finishing Gypsum Fibrosum sawing operation;

(9) in the time of need not using the working power of this control device control electric saw 86 as the operator, then selector switch 24 can be switched to contact A position, make the electric saw 86 can be as continuous firing as usual, because of electric saw saw blade 88 contact conductive foils 10 interruption of work power supplys.

(10) before operation, the operator can illustrate earlier and demonstrate, and allows patient and family members thereof understand whole process.

The operator uses the mode of operation of Fig. 2 and electric plaster bandage saw control device second embodiment shown in Figure 5, and (1) to (4) the program of preceding four operation sequences during with aforesaid operations first embodiment is identical, and its follow-up operation sequence is as follows:

(5) knob 32 is adjusted in rotation, interrupts the length of the time delay of electric saw 86 working powers with selection;

The time delay of saw 86 working powers of cutting off the power supply (7), at the end the working power of electric saw 86 was reclosed immediately automatically, so can continue to operate electric saw; Simultaneously, the bulb of caution device 26 also extinguishes thereupon;

(8) heavily cover (6) and (7), till finishing Gypsum Fibrosum sawing operation;

When using electric plaster bandage saw control device of the present invention to implement Gypsum Fibrosum sawing operation, to cut the lining of Gypsum Fibrosum band outer and contact moment with conductive foil when the electric saw saw blade, can interrupt the working power of electric saw immediately, skin and the muscle avoiding electric saw to work on and accidentally injure the patient, more can eliminate the patient and accidentally injure the anxious psychology of skin or muscle lest fearing electric plaster bandage saw, and can promote operator's self-confidence, implement the spent time of Gypsum Fibrosum sawing operation so as to effective shortening; And this device can be operated by nurse with universal experience or staff, and does not require by quite skilled medical personnel's operation, therefore, also can alleviate doctor and senior nurse's work load.

Claims

1, the absorbent cotton internal layer that a kind of electric saw controller that utilizes electric saw to cut to envelope the Gypsum Fibrosum band of patient skin, this Gypsum Fibrosum band are contacted with patient skin by one deck and the hardened lining material of one deck is outer forms; It is characterized in that this electric saw controller comprises:

The conductive foil that between described absorbent cotton internal layer and described lining material skin, presets;

Interrupt the relay control device of the working power of this electric saw immediately in order to contact moment with described conductive foil at described electric saw; And

After the working power of described electric saw is interrupted, can drives described relay control device and make it the reset apparatus of the described electric saw working power of conducting again.

2, electric saw controller according to claim 1 is characterized in that, also is included in the caution device that sends caution light when described electric saw contacts with described conductive foil.

3, electric saw controller according to claim 1 is characterized in that, also is included in the caution device that sends caution sound when described electric saw contacts with described conductive foil.

4, electric saw controller according to claim 1 is characterized in that, also comprises a selector switch that optionally working power directly is supplied to described electric saw, makes this electric saw can select not accept the control that described relay control device interrupts power supply.

5, electric saw controller according to claim 1 is characterized in that, described reset apparatus comprises one in order to trigger the passive type reset circuit that described relay control device makes it the interrupted working power of this electric saw of conducting again; And a quilt can start the foot-operated panel of described reset circuit work when trampling.

6, electric saw controller according to claim 1, it is characterized in that, described reset apparatus is a pulse generator, when described electric saw contacts moment with described conductive foil, this pulse generator is promptly exported a pulse with one period time delay to described relay control device, in order to drive the working power that this relay control device interrupts described electric saw immediately; When time delay of the pulse that produces at the end, described relay control device i.e. the interrupted working power of the described electric saw of conducting again automatically.

7, electric saw controller according to claim 1 is characterized in that, can be adjusted the time delay of the pulse that described pulse generator produces by a variable resistance.