CN203089275U - Axial-force controllable surgical bone drill provided with brass-solder polycrystalline cubic boron nitride (PCBN) superhard material drill bit - Google Patents
Axial-force controllable surgical bone drill provided with brass-solder polycrystalline cubic boron nitride (PCBN) superhard material drill bit Download PDFInfo
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- CN203089275U CN203089275U CN 201320016750 CN201320016750U CN203089275U CN 203089275 U CN203089275 U CN 203089275U CN 201320016750 CN201320016750 CN 201320016750 CN 201320016750 U CN201320016750 U CN 201320016750U CN 203089275 U CN203089275 U CN 203089275U
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Abstract
The utility model relates to an axial-force controllable surgical bone drill provided with a brass-solder polycrystalline cubic boron nitride (PCBN) superhard material drill bit. The axial-force controllable surgical bone drill is high in control accuracy, and capable of avoiding damage on brain tissue, a direct-current motor is arranged in a machine shell of a drill body, the direct-current motor is connected with an intelligent integrated control system and a direct-current power source, an output shaft of the direct-current motor is connected with a gear drive device which is connected with a drill bit chuck through a drive shaft, and the drill bit is arranged on the drill bit chuck. A thrust bearing is arranged at a connection joint of the drill bit chuck and the drive shaft, the thrust bearing is attached to a deformation element which abuts against the machine shell and is located by an elastic element, and a resistance strain gauge is pasted on the inner surface of the deformation element and connected with the intelligent integrated control system. A sealing device is arranged between the drill bit chuck and the machine shell, the drill bit comprises a cylindrical base body, and the twist drill bit is arranged on the cylindrical base body. A spiral groove is arranged in the cylindrical base body, and PCBN superhard materials are arranged on the spiral groove and a main rear cutter face M of the drill bit.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, concrete is a kind of controlled surgery bone drill of axial force that adopts soldering PCBN superhard material drilling bit.
Background technology
The apparatus of surgery skull boring at present is that hand electric bores, and the mode of operation that hand electric bores is: come the keyhole direction and the amount of feeding by the free-hand support electric drill of doctor.The electric drill design has one group of safety device, and power source is connected with drill bit by clutch, when drill bit bears pressure drill bit is linked to each other with power source by clutch, drives the drill bit running to carry out the bone drilling operation; When bit drills penetrator bone, because of can making drill bit, separates the counteracting force that no longer bears skull with power source, and electric drill is shut down.Yet these methods must rely on doctor's individual's abundant clinical experience and hand to feel to judge in the process of bone drilling whether passed through skull, and manually stop rapidly; If when carrying out via the doctor who lacks rich experiences, even the electric drill of above-mentioned specific safety device is arranged, the careless slightly meninges and the nervous tissue that also might when passing through skull, injure below the skull.Adopt free-hand mode to hole in addition, also may influence safety, accuracy and the comfortableness of boring procedure because the arm strength deficiency causes boring procedure to produce vibrations.
In order to increase surgery bone drilling process safe and accuracy, " a kind of intelligent bone drill and control method thereof " (China Patent No. is 2009101036423) patent of invention disclose the bone drill motor be provided with strain-type torque sensor, speed probe or pressure transducer any one, two or three senser element; On the bone drill motor, also be provided with the induced signal of embedded intelligence control module receiving sensor collection and judge control bone drill motor.But this method is speed probe, torque sensor and pressure transducer to be set drill speed, moment of torsion and pressure are measured in real time on the matrix of bone drill motor.The precision of obvious this measuring method and accuracy can not guarantee requirement, because be subjected to various signals and complexity thereof on the matrix of bone drill motor, the collection of signal and processing accuracy and accuracy are difficult to be guaranteed, add stress point from drill bit to power source motor, driving-chain is long, and the precision of test and accuracy can not meet the demands.
Summary of the invention
Purpose of the present invention provides a kind of controlled surgery bone drill of axial force that adopts soldering PCBN superhard material drilling bit exactly for addressing the above problem, and the degree of accuracy height of its control can effectively be avoided brain tissue injury.
For achieving the above object, the present invention adopts following technical scheme:
A kind of controlled surgery bone drill of axial force that adopts soldering PCBN superhard material drilling bit, it comprises drill body and drill bit, described drill body comprises casing, in casing, be provided with direct current generator, direct current generator is connected with dc source with intelligent integration control system, the output shaft of direct current generator is connected with gear drive, and gear drive is connected with drill bushing by power transmission shaft, and drill bit is installed on the drill bushing; Junction at drill bushing and power transmission shaft is provided with thrust bearing, thrust bearing is close to deformation element, deformation element abuts against on the casing, deformation element is located with flexible member, resistance strain gage sticks on the deformation element inner surface, resistance strain gage also is connected with intelligent integration control system, then is provided with sealing device between drill bushing and casing; Described drill bit comprises a cylindrical matrix, and cylindrical matrix is provided with the point of twist drill, also is provided with helicla flute on cylindrical matrix, and knife face M is provided with the PCBN superhard material behind helicla flute and drill bit master.
Described drill bit length overall L
3, the working portion length l
3, the drillstock of drill bit partly adopts the staight shank form, and drill bit adopts rustless steel to make: at first process the point of twist drill part at cylindrical matrix one end, and then width of processing is H on the cylindrical matrix periphery
3, the degree of depth is h
3Helicla flute, spiral fluted width H
3Change according to bit diameter and the different of needs, its excursion is 0.5mm-5mm, degree of depth h
3Variation according to the width of bit diameter and superhard material is selected between 0.2mm-2mm.The spiral fluted helixangle
3Excursion between 18 °-30 °; After helicla flute machines, with the PCBN superhard material cut into the drill bit master after the knife face M sheet material identical with the helicla flute shape, behind the drill bit master in knife face M and the helicla flute, at this moment the height of the outstanding matrix of cutting edge is h to the method for using soldering then with the PCBN superhard material soldering of well cutting
T3, according to the diameter d of stainless steel base
3Projecting height h with cutting edge
T3But the diameter D of drill bit
3Be controlled at 2mm-10mm.
Described intelligent integration control system comprises single-chip microcomputer, and single-chip microcomputer is connected with gauge tap with direct current generator by ON-OFF control circuit; Single-chip microcomputer also is connected with A/D converter, signal picker, amplifier, wave filter, bridge circuit successively simultaneously, and bridge circuit is connected with resistance strain gage; Signal picker is gathered the voltage signal of measuring, and converts digital quantity to through A/D converter then and is input in the single-chip microcomputer, and single-chip microcomputer is analyzed, judged digital quantity, sends control signal:
Judge whether to satisfy the automatic stop condition: drill bit is drilling the decline suddenly of bone moment axial force, and later axial force can remain unchanged very little and substantially, so judging the foundation drill is exactly that the slope of the voltage signal that collected is less than a very little value that configures and remain unchanged substantially, single-chip microcomputer was promptly judged and was satisfied the automatic stop condition this moment, promptly can send the signal cut ON-OFF control circuit, thereby realize the automatic stop function;
Simultaneously, the voltage signal that single-chip microcomputer is gathered according to signal pickup assembly judges whether axial force is excessive, judges that the excessive foundation of axial force is: the voltage signal of being gathered is greater than certain value that configures, and at this moment single-chip microcomputer judges that promptly axial force is excessive at this moment.
Described gear drive comprises a driving gear shaft that is connected by tongue and groove with the direct current generator output shaft, the driving gear shaft two ends are connected with the deep groove ball bearing II with the deep groove ball bearing I respectively and position, and two bearings are all realized the location by the shaft shoulder and casing; Driving gear shaft and driven gear engagement, driven gear is connected with driven shaft by flat key, driven gear is realized axial location by the shaft shoulder and axle sleeve I, the driven shaft two ends are symmetrically installed with deep groove ball bearing III and deep groove ball bearing IV, the deep groove ball bearing III is located with retainer nut's II, the shaft shoulder and casing, and the deep groove ball bearing IV is located with axle sleeve I, retainer nut's I and casing; Driven shaft links to each other by tongue and groove with power transmission shaft.
Described power transmission shaft is provided with the axle sleeve II, and the driven shaft two ends are installed in respectively on deep groove ball bearing V and the deep groove ball bearing VI.
Described sealing device is the sealing ring that is embedded on the casing.
The invention provides a kind of controlled surgery bone drill and drill bit thereof of axial force that adopts soldering PCBN superhard material drilling bit, in the process of boring, the axial force transmission route is that bone acts on the drill bit, drill bit passes to drill bushing, and drill bushing passes to power transmission shaft, and power transmission shaft passes to thrust bearing, thrust bearing passes to deformation element, so just cause deformation element generation deformation, cause the deformation of resistance strain gage, the axial force size just is converted into the size of resistance strain gage deformation quantity like this.The deformation meeting of resistance strain gage changes its resistance value, be converted to small magnitude of voltage through behind the bridge circuit, carry out filtering through wave filter then, after discharging interfering signal, after amplifier amplification, signal picker acquired signal and A/D converter 36 conversions, can be discerned again, operating mode is judged by single-chip microcomputer.
When boring, may cause temperature to raise owing to the plastic deformation and the frictional force between drill bit and bone of bone fragments.May cause osteonecrosis in the bone drilling process, the osteocyte of boring adjacent domain can cause permanent death when surpassing 50 ℃ of marginal values owing to borehole temperature.In order to reduce borehole temperature, boring procedure has prevented that as far as possible soon heat from importing in the bone adjacent tissue.By increasing axial force penetration rate is improved.Yet axial force is excessive, may cause the raising of patient's further fracture and drilling temperature.Drilling parameter is adjusted axial force and borehole temperature obviously can not tackle the problem at its root by changing.The present invention adopts braze welding diamond on the bone drill matrix surface, and realizes the controlled ordered arrangement of diamond abrasive grain.The exposed height of abrasive particle can reach 70 ﹪-80 ﹪, and the cutting edge that therefore is equivalent to act on behalf of with diamond abrasive grain bone drill is finished drilling operation, therefore can reduce drill thrust greatly, thereby reduce the drilling temperature.
The invention has the beneficial effects as follows: the fore bearing of bone drill power transmission shaft is that thrust bearing is provided with deformation element and resistance strain gage, thereby the drill thrust in the monitoring drilling process, because fore bearing is directly near bit force point, the monitoring and the transfer ratio of signal are more accurate, the precision height can effectively prevent when the excessive or bone drill of axial force from wearing the injury to osseous tissue.The cutting edge of drill bit adopts the PCBN superhard material, and this material has improved the sharpness of cutting edge greatly, has reduced borehole axial power, thereby has reduced the drilling temperature; The excursion of the helical angle of drill bit is chosen between 18 °-30 °, can guarantee that smear metal can in time discharge smoothly, takes away heat, reduces temperature rise; Spiral fluted width H
3Change according to bit diameter and the different of needs, its excursion is 0.5mm-5mm, and this scope can adapt to the processing request of different bore diameters; The thread groove degree of depth that is used for soldering PCBN superhard material is controlled between 0.2mm-2mm, and the intensity that this degree of depth can guarantee not damage bit matrix can guarantee the stability of soldering PCBN superhard material again.
Description of drawings
Fig. 1 is the cutaway view of surgery bone drilling automatic stop cooling electric drill;
Fig. 2 is the intelligent integration control system parts;
Fig. 3 is the axial force transmission block diagram;
Fig. 4 detects the control block diagram for axial force;
Fig. 5 is for drilling automatic stop function control block diagram;
Fig. 6 is the excessive control block diagram of axial force;
Fig. 7 is the bone drilling drill bit;
Fig. 7 a is the drill bit front view;
Fig. 7 b is the helicla flute location drawing;
Fig. 7 c is apex point angle figure;
Fig. 7 d be among Fig. 7 B-B to enlarged drawing;
Fig. 7 e is helical groove structure figure.
Wherein, 1-dc source, 2-gauge tap, 3-driving gear shaft, the 4-casing, 5-direct current generator, 6-driven shaft, 7-intelligent integration control system, the 8-flat key, 9-driven gear, 10-axle sleeve I, 11-axle sleeve II, 12-retainer nut's I, 13-power transmission shaft, 14-resistance strain gage, the 15-flexible member, 16-deformation element, 17-thrust bearing, the 18-sealing ring, 19-drill bushing, 20-drill bit, 21-deep groove ball bearing I, 22-deep groove ball bearing II, 23-deep groove ball bearing III, 24-deep groove ball bearing IV, 25-deep groove ball bearing V, 26-deep groove ball bearing VI, 27-retainer nut's II, 28-retainer nut's III, 29-direct current generator base, 30-dc source bottom, 31-screwed hole, 32-bridge circuit, the 33-wave filter, 34-amplifier, 35-signal picker, the 36-A/D transducer, 37-single-chip microcomputer, 38-ON-OFF control circuit.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing and embodiment.
Fig. 1 has shown each ingredient of surgery bone drilling automatic stop cooling electric drill, and wherein casing 4 is made of symmetric two halves up and down, and is fixed by screwed hole 31 by screw.Dc source 1 links to each other with gauge tap 2 usefulness leads, and in conjunction with Fig. 2 as can be known, gauge tap 2 links to each other with ON-OFF control circuit 38 usefulness leads in the intelligent integration control system 7, and ON-OFF control circuit 38 is connected with direct current generator 5 usefulness leads.Direct current generator 5 is fixed on the direct current generator base 29.Direct current generator 5 and driving gear shaft 3 link to each other by tongue and groove, driving gear shaft 3 is installed in and realizes the location on deep groove ball bearing I 21 and the deep groove ball bearing II 22, and two bearings are all realized the location by the shaft shoulder and casing 4, driving gear shaft 3 and driven gear 9 are meshed, and driven gear 9 matches by flat key 8 and driven shaft 6.Driven gear 9 is realized axial location by the shaft shoulder and axle sleeve I 10, driven shaft 6 two ends are symmetrically installed with deep groove ball bearing III 23 and deep groove ball bearing IV 24, deep groove ball bearing III 23 usefulness retainer nut II 27, the shaft shoulder and casing 4 are located, deep groove ball bearing IV 24 usefulness axle sleeve I 10, retainer nut's I and casing 4 location.Driven shaft 6 links to each other with power transmission shaft 13 tongue and grooves, deep groove ball bearing V 25 is installed at power transmission shaft 6 two ends and deep groove ball bearing VI 26 realizes the location, deep groove ball bearing V 25 relies on retainer nut's III 28, axle sleeve II 11 and casing 4 location, the deep groove ball bearing VI 26 usefulness shaft shoulders, axle sleeve II 11 and casing 4 location.The shaft shoulder place of the other end of power transmission shaft 13 is equipped with a thrust bearing 17, thrust bearing 17 is close to deformation element 16, deformation element 16 other ends abut against on the casing 4, deformation element 16 usefulness flexible members 15 location, and resistance strain gage 14 sticks on deformation element 16 inner surfacies.Can get in conjunction with Fig. 2, resistance strain gage 14 links to each other with lead with bridge circuit in the intelligent integration control system 7.Drill bushing 19 is fixed on the power transmission shaft end, and drill bushing 19 is used for clamping drill bit 20.Sealing ring 18 is embedded in the casing and seals, and dc source bottom 30 is held on the casing 4.
As shown in Figure 2, intelligent integration control system 7 is by bridge circuit 32, wave filter 33, and amplifier 34, signal picker 35, A/D converter 36, single-chip microcomputer 37, ON-OFF control circuit 38 set form.Wherein, resistance strain gage 14 links to each other with bridge circuit 32 usefulness leads, bridge circuit 32 and wave filter 33 are communicated with, wave filter 33 links to each other with amplifier 34, amplifier 34 links to each other with signal picker 35, and signal picker 35 links to each other with A/D converter 36, and A/D converter 36 links to each other with single-chip microcomputer 37, single-chip microcomputer 37 with link to each other with ON-OFF control circuit 38, ON-OFF control circuit 38 links to each other with gauge tap 2 usefulness leads with direct current generator 5 respectively.
Can get by Fig. 3, in the process of boring, the axial force transmission route is that bone acts on the drill bit 20, drill bit 20 passes to drill bushing 19, and drill bushing 19 passes to power transmission shaft 13, and power transmission shaft passes 13 and passes to thrust bearing 17, thrust bearing 17 passes to deformation element 16, so just cause that deformation takes place deformation element 16, cause the deformation of resistance strain gage 14, the axial force size just is converted into the size of resistance strain gage 14 deformation quantities like this.
The deformation meeting that can be got resistance strain gage 14 by Fig. 4 changes its resistance value, be converted to small magnitude of voltage through behind the bridge circuit 32, carry out filtering through wave filter 33 then, after discharging interfering signal, after amplifier 34 amplifications, signal picker 35 acquired signal and A/D converter 36 conversions, can be discerned again, operating mode is judged by single-chip microcomputer 37.
As shown in Figure 5, in the electric drill work, signal picker is gathered the voltage signal of measuring, converting digital quantity to through A/D converter 36 then is input to and judges whether to satisfy the automatic stop condition in the single-chip microcomputer 37, if satisfy the automatic stop condition, single-chip microcomputer 37 can send to instruct ON-OFF control circuit 38 is opened circuit so, realizes the automatic stop function.Because drill bit is drilling the decline suddenly of bone moment axial force, and later axial force can remain unchanged very little and substantially, so judging the foundation drill is exactly that the slope of the voltage signal that collected is less than a very little value that configures and remain unchanged substantially, single-chip microcomputer 37 was promptly judged and was satisfied the automatic stop condition this moment, promptly can send signal cut ON-OFF control circuit 38, thereby realize the automatic stop function.
As shown in Figure 6, the voltage signal that collects is received by single-chip microcomputer 37 after A/D converter 36 conversions, and axial force is excessive if single-chip microcomputer 37 is judged this moment, and single-chip microcomputer will send instruction to ON-OFF control circuit 38, reduce electric current, thereby axial force was controlled in normal range.Judge the excessive foundation of axial force be the voltage signal gathered greater than certain value that configures, at this moment single-chip microcomputer 37 judges that promptly axial force is excessive at this moment.
Shown in Fig. 7, Fig. 7 a-7e, by Tu Kede, this drill bit length overall L
3, the working portion length l
3, the drillstock of drill bit partly adopts the staight shank form, and the apex point part is similar with the apex point part of ordinary straight handle twist drill, and the drilling rod part of all the other drill bits processes on the cylindrical matrix surface, and the matrix material of drill bit adopts rustless steel.Concrete manufacture method: at first process and the identical apex point part of common fluted drill apex point shape at cylindrical matrix one end, the form parameter of apex point is consistent with standard fluted drill apex point parameter, and then width of processing is H on the cylindrical matrix periphery
3, the degree of depth is h
3Helicla flute, spiral fluted width H
3Can change according to bit diameter and the different of needs, its excursion is 0.5mm-5mm, degree of depth h
3Variation according to the width of bit diameter and PCBN superhard material is selected between 0.2mm-2mm, and the intensity that this degree of depth can guarantee not damage bit matrix can guarantee the stability of soldering PCBN superhard material again.The spiral fluted helixangle
3Excursion between 18 °-30 °, can guarantee that smear metal can in time discharge smoothly, take away heat, reduce temperature rise; After helicla flute machines, just the PCBN superhard material is cut into the drill bit master after the knife face M sheet material identical with the helicla flute shape, the method of using soldering then with the PCBN superhard material soldering of well cutting behind the drill bit master in knife face M and the helicla flute, this material has improved the sharpness of cutting edge greatly, reduce borehole axial power, thereby reduced the drilling temperature; At this moment the height of the outstanding matrix of cutting edge is h
T3, according to the diameter d of stainless steel base
3Projecting height h with cutting edge
T3Can be with the diameter D of drill bit
3Be controlled at 2mm-10mm.
Work process of the present invention is as follows:
In conjunction with Fig. 1 as can be known, at first drill bit 20 is installed on the drill bushing 19, closed then gauge tap 2, intelligent integration control system 7 judges that meeting path condition realizes that promptly dc source 1 passes through ON-OFF control circuit 38 and gives direct current generator 5 power supplies, direct current generator produces power, the power that motor produces passes to driving gear shaft 3 by electric machine main shaft, driving gear 3 is given driven gear 9 by gear meshing with power transmission, interconnect function by flat key 8, driven gear 9 is given driven shaft 6 with transmission of power, driven shaft 6 is given power transmission shaft 13 with transmission of power again, power transmission shaft 13 is given drill bushing 19 with transmission of power, drill bushing 19 transmission of power is the most at last given drill bit 20, has so just realized the boring motion.Can get in conjunction with Fig. 3, the reaction force acts of bone is on drill bit 20 in the process of boring, drill bit 20 passes to drill bushing 19, drill bushing 19 passes to power transmission shaft 13, power transmission shaft passes 13 and passes to thrust bearing 17, and thrust bearing 17 passes to deformation element 16, so just causes that deformation takes place deformation element 16, cause the deformation of resistance strain gage 14, the axial force size just is converted into the size of resistance strain gage 14 deformation quantities like this.The deformation meeting that can get resistance strain gage 14 in conjunction with Fig. 4 changes its resistance value, be converted to small magnitude of voltage through behind the bridge circuit 32, carry out filtering through wave filter 33 then, after discharging interfering signal, after amplifier 34 amplifications, signal picker 35 acquired signal and A/D converter 36 conversions, can be discerned again, and operating mode is judged by single-chip microcomputer 37.Intelligence control system 7 can realize the axial force monitoring and drill two kinds of functions of automatic stop in the boring procedure.As shown in Figure 5, in the electric drill work, 35 pairs of voltage signals of signal picker are gathered, converting digital quantity to through A/D converter 36 then is input in the single-chip microcomputer 37, judge whether to satisfy the automatic stop condition, if satisfy the automatic stop condition, single-chip microcomputer 37 can send to instruct ON-OFF control circuit 38 is opened circuit so, realizes the automatic stop function.In conjunction with Fig. 6 as can be known, the voltage signal that collects is received by single-chip microcomputer 37 after A/D converter 36 conversions, and axial force is excessive if single-chip microcomputer 37 is judged this moment, will send instruction to ON-OFF control circuit 38, reduce electric current, thereby axial force was controlled in normal range.Boring is unloaded drill bit 20 after finishing, and equipment is carried out disinfection and keeps properly.
Claims (6)
1. controlled surgery bone drill of axial force that adopts soldering PCBN superhard material drilling bit, it comprises drill body and drill bit, it is characterized in that, described drill body comprises casing, be provided with direct current generator in casing, direct current generator is connected with dc source with intelligent integration control system, and the output shaft of direct current generator is connected with gear drive, gear drive is connected with drill bushing by power transmission shaft, and drill bit is installed on the drill bushing; Junction at drill bushing and power transmission shaft is provided with thrust bearing, thrust bearing is close to deformation element, deformation element abuts against on the casing, deformation element is located with flexible member, resistance strain gage sticks on the deformation element inner surface, resistance strain gage also is connected with intelligent integration control system, then is provided with sealing device between drill bushing and casing; Described drill bit comprises a cylindrical matrix, and cylindrical matrix is provided with the point of twist drill, also is provided with helicla flute on cylindrical matrix, and knife face M is provided with the PCBN superhard material behind helicla flute and drill bit master.
2. the controlled surgery bone drill of axial force of employing soldering PCBN superhard material drilling bit as claimed in claim 1 is characterized in that, described drill bit length overall L
3, the working portion length l
3, the drillstock of drill bit partly adopts the staight shank form, and drill bit adopts rustless steel to make; Cylindrical matrix one end is the point of twist drill part, is H for width on the periphery of cylindrical matrix
3, the degree of depth is h
3Helicla flute, spiral fluted width H
3Change according to bit diameter and the different of needs, its excursion is 0.5mm-5mm, degree of depth h
3Variation according to the width of bit diameter and PCBN superhard material is selected between 0.2mm-2mm; The spiral fluted helixangle
3Excursion between 18 °-30 °; In knife face M and the helicla flute, the height of the outstanding cylindrical matrix of cutting edge is h behind the drill bit master in the PCBN superhard material sheet material soldering identical with the helicla flute shape with knife face behind the drill bit master
T3, according to the diameter d of stainless steel base
3Projecting height h with cutting edge
T3, the diameter D3 of drill bit is controlled at 2mm-10mm.
3. the controlled surgery bone drill of axial force of employing soldering PCBN superhard material drilling bit as claimed in claim 1 is characterized in that described intelligent integration control system comprises single-chip microcomputer, and single-chip microcomputer is connected with gauge tap with direct current generator by ON-OFF control circuit; Single-chip microcomputer also is connected with A/D converter, signal picker, amplifier, wave filter, bridge circuit successively simultaneously, and bridge circuit is connected with resistance strain gage; Signal picker is gathered the voltage signal of measuring, and converts digital quantity to through A/D converter then and is input in the single-chip microcomputer, and single-chip microcomputer is analyzed, judged digital quantity, sends control signal.
4. the controlled surgery bone drill of axial force of employing soldering PCBN superhard material drilling bit as claimed in claim 1, it is characterized in that, described gear drive comprises a driving gear shaft that is connected by tongue and groove with the direct current generator output shaft, the driving gear shaft two ends are connected with the deep groove ball bearing II with the deep groove ball bearing I respectively and position, and two bearings are all realized the location by the shaft shoulder and casing; Driving gear shaft and driven gear engagement, driven gear is connected with driven shaft by flat key, driven gear is realized axial location by the shaft shoulder and axle sleeve I, the driven shaft two ends are symmetrically installed with deep groove ball bearing III and deep groove ball bearing IV, the deep groove ball bearing III is located with retainer nut's II, the shaft shoulder and casing, and the deep groove ball bearing IV is located with axle sleeve I, retainer nut's I and casing; Driven shaft links to each other by tongue and groove with power transmission shaft.
5. the controlled surgery bone drill of axial force of employing soldering PCBN superhard material drilling bit as claimed in claim 1 is characterized in that described power transmission shaft is provided with the axle sleeve II, and the driven shaft two ends are installed in respectively on deep groove ball bearing V and the deep groove ball bearing VI.
6. the controlled surgery bone drill of axial force of employing soldering PCBN superhard material drilling bit as claimed in claim 1 is characterized in that described sealing device is the sealing ring that is embedded on the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320016750 CN203089275U (en) | 2013-01-12 | 2013-01-12 | Axial-force controllable surgical bone drill provided with brass-solder polycrystalline cubic boron nitride (PCBN) superhard material drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320016750 CN203089275U (en) | 2013-01-12 | 2013-01-12 | Axial-force controllable surgical bone drill provided with brass-solder polycrystalline cubic boron nitride (PCBN) superhard material drill bit |
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| Publication Number | Publication Date |
|---|---|
| CN203089275U true CN203089275U (en) | 2013-07-31 |
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|---|---|---|---|
| CN 201320016750 Withdrawn - After Issue CN203089275U (en) | 2013-01-12 | 2013-01-12 | Axial-force controllable surgical bone drill provided with brass-solder polycrystalline cubic boron nitride (PCBN) superhard material drill bit |
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|---|---|
| CN (1) | CN203089275U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103070713A (en) * | 2013-01-12 | 2013-05-01 | 青岛理工大学 | Axial-force-controllable surgical bone drill using brazed PCBN (Polycrystalline Cubic Boron Nitride) superhard material drill bit |
| CN110522493A (en) * | 2019-08-14 | 2019-12-03 | 蚌埠医学院第一附属医院 | A kind of operation of opening cranium skull milling cutter |
-
2013
- 2013-01-12 CN CN 201320016750 patent/CN203089275U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103070713A (en) * | 2013-01-12 | 2013-05-01 | 青岛理工大学 | Axial-force-controllable surgical bone drill using brazed PCBN (Polycrystalline Cubic Boron Nitride) superhard material drill bit |
| CN110522493A (en) * | 2019-08-14 | 2019-12-03 | 蚌埠医学院第一附属医院 | A kind of operation of opening cranium skull milling cutter |
| CN110522493B (en) * | 2019-08-14 | 2022-05-03 | 蚌埠医学院第一附属医院 | Skull milling cutter for craniotomy |
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