CN2389623Y - Electric high-speed bone saw - Google Patents

Abstract

The utility model discloses an electric high-speed bone saw, which comprises a power source, a transmission device and a working portion. The power source is a motor, the transmission device is a power transmission flexible shaft which is connected with an output shaft of the motor and a main shaft of a gun type hand piece together by a three point centering fast assembly and disassembly positioning device. The bone saw has the characteristics of low noise, corrosion prevention, good insulation, convenient assembly and disassembly, and the bone saw provides convenience to cutting operation to skeletons of every part of human body in medicine clinic.

Description

A kind of electric high-speed bone saw

This utility model relates to skeleton cutting device used on a kind of clinical medicine, especially a kind of electric high-speed bone saw.

At present, the operating theater instruments that is used for cutting bone on the clinical medicine is all more single, will be with different sawing apparatuses at human body skeleton cutting everywhere, with regard to existing electric bone saw, its structure is heavy, and noise is big, and moment of torsion also often can not satisfy the performance requirement of cutting bone.The insulating reliability of existing electric bone saw is also not enough.Simultaneously, the external sealing property of revealing between part and the internal mechanism of the saw of existing bone saw is relatively poor, consequently, because the lubricant greases of saw body internal mechanical etc. is excessive, the contaminated operation zone causes the patient to infect, in addition easily, again because the outside saw of sterilization body before infiltration such as blood and slime in the operation and the art, often make the driving section of the bone saw inside place's rust corrosion that grades.Moreover the syndeton of the power section of existing bone saw, running part and working portion all can not be satisfactory on the degree of its proper alignment and dismounting difficulty or ease.

The purpose of this utility model is to improve the deficiencies in the prior art, provides that a kind of cutting speed is fast, moment of torsion is big, noise is low, good insulation preformance, the quick electric high-speed bone saw of dismounting; Further purpose of the present utility model is to provide a kind of good airproof performance, simultaneously the lower electric high-speed bone saw of noise.

For achieving the above object, this utility model is taked following design:

This electric high-speed bone saw includes power source, actuating device and working portion.Described power source is a motor, in order to obtain enough big moment of torsion and high rotating speed, can select S368BW type motor for use.On the output shaft of motor, be provided with seal, described seal is a shift fork of being made by insulant, one end and motor output shaft are affixed, its other end is connected with described actuating device, described seal can also be two seals, promptly be outside aforesaid and shift fork that motor output shaft is connected in the end of motor an also affixed insulation output seat, on the end face of described insulation output seat, be provided with the delivery that one one end has flange, affixed with the end face of described insulation output seat, the described motor output shaft that has the shift fork that insulate places in this sleeve pipe.In the prior art, the axle head of the output shaft of motor is provided with one section screw thread, in order to connect actuating device, and the axis of screw thread and output shaft is often not high to moderate, it is good for actuating device and motor are had to neutrality, between the output shaft of motor and described insulation shift fork, can be provided with one with the friction tight axle sleeve of motor shaft, itself and motor shaft have very high axis to neutrality, described insulation shift fork is spirally connected on the excircle of described axle sleeve, like this, than the shift fork that will insulate directly be screwed onto can obtain on the screw thread of motor shaft head higher to neutrality.Be spirally connected on the screw thread of the axle head of the output shaft of a described motor elastic washer and a locking is female, realizes the locking of described shift fork by locking power that mother, elastic washer act on the electric machine joint end face.If overload will skid on motor shaft with the friction tight axle sleeve of motor shaft, from and can play the effect of overload protection, avoid damaging motor and actuating device.

Described actuating device is a power transmission flexible axle, and its two ends set firmly ball bearing, can adopt high-accuracy ball bearing device; The core of described driving snake is a steel wire strand, is provided with a spiral damping tin bronze belt and a spiral positioning steel belt layer in its outside, and outermost is an elastomeric material protective layer.Such driving snake when it rotates, can reduce effectively himself anyhow to vibration, improve the smoothness of operation of this bone saw, reduce vibration and noise.

Described working portion can be a rifle formula mobile phone, is provided with a primary gear speed reducing mechanism and an eccentric balance reciprocator between the outer saw blade of main shaft that is connected with flexible axle in the described rifle formula mobile phone and machine.For the purpose that realizes sealing, on the casing of the described rifle formula mobile phones such as outlet of the inlet of the main shaft that is connected with driving snake of hand set machine shell, saw body exposed parts, be equipped with sealing gasket, make the inside and outside steam of casing isolated.

Described working portion can also be a swing type saw head, is connected with an eccentric stiffener on described saw head and the main shaft that actuating device is connected, and described eccentric stiffener drives a swing seat, fixes a saw blade in the described swing.In the existing swing type saw head fixedly saw blade be that elastic force by a spring realizes, as shown in Figure 8, such structure can make saw blade in the bone saw work process that vibration is up and down arranged, this vibration not only brings very big noise, more can cause the saw kerf of corrective surgery position skeleton to increase and the coarse problem of facet, make the skeleton wound healing difficulty of postoperative patient.Establish a shoulder hole with a degree of depth on the swing seat of this saw head, a compressing member is fixed on saw blade on the described swing seat by a securing member.In the swing seat shoulder hole below saw blade a back-moving spring can be set,, only described securing member need be unclamped, can put new saw blade again, fasteningly then tighten firmware and just finished by taking out former saw blade between compressing member and the swing seat when getting when changing saw blade.Saw blade in this saw head is fastened on saw blade on the swing seat by securing member and compressing member, therefore, has eliminated the up-down vibration of saw blade.

The output shaft of described power transmission flexible axle and motor and link together with the main shaft of working portion quick mounting or dismounting positioner by three points centering, make the drive disk assembly in the motor-driven working portion, then make the saw blade motion in the working portion, and realize the purpose of saw bone.

Described three points centering is installed and removed positioner fast and is included locking bed, lock sleeve, locking member, elastic reset spare and keeper, described locking bed is located in the lock sleeve, all expose at the other places, two sides of locking bed wall build-in in the sidewall of described locking bed the two sides of described locking member, locking member can be done radial displacement in the locking bed wall, be provided with elastic reset spare between locking bed and the lock sleeve, on locking bed, be provided with described keeper, so that lock sleeve places on the locking bed.The inwall of lock sleeve is provided with an annular groove.Described three points centering is installed and removed positioner fast and is located at flexible axle and motor connecting place and working portion and flexible axle junction.Described locking member can be the sphere that is distributed on the locking bed circumferential side wall, constitutes the spheroid three points centering with this and installs and removes positioner fast.Described elastic reset spare can be a stage clip.

The quick mounting or dismounting positioner of described three points centering is located on one of interconnective two parts, is provided with an annular groove in another part position of corresponding described locking member behind installation in position.

Install and remove fast on flexible axle one end that positioner can be fixed in motor and flexible axle connection as, described three points centering, corresponding described three points centering installs and removes fast that the locking member place just establishes an annular groove in the positioner on the motor shaft.And in the junction of flexible axle and working portion, described three points centering is installed and removed positioner fast and can be fixed on the working portion, and corresponding described three points centering installs and removes fast that the locking member place establishes an annular groove in the positioner on the flexible axle.

When motor or flexible axle are desired and be associated with three points centering when installing and removing the flexible axle of positioner and working portion fast and combining, in the connecting hole on the link insertion locking bed of motor or flexible axle, promote lock sleeve simultaneously, locking member on the locking bed is entered in the annular groove on the lock sleeve inwall, then, unclamp lock sleeve, under the effect of elastic reset spare, lock sleeve resets, locking member in the locking bed enters in the annular groove on the with it corresponding connector, the lock sleeve inwall is located locking member, and two bared ends of locking member are against on the annular groove wall and lock sleeve of connector tightly, has played the fastening effect that connects.Locking member at least three of uniform distribution on the cross section of locking bed, therefore, it is accurate to the heart.When dismantling connector, only need make locking bed and lock sleeve produce axial relative displacement, elasticity of compression return unit, locking member enter in the annular groove on the lock sleeve, connector can be taken off, and be very convenient, fast.

Described motor can connect a foot switch, the running of control motor.

Skeleton cutting everywhere all can provide enough big moment of torsion to the electric high-speed bone saw that this utility model provides to human body, and insulation shift fork good insulation performance performance makes actuating device and working portion be no-voltage and zero current, guarantees operation safety.The high-accuracy ball bearing device at flexible axle two ends and place motor shaft and the axle sleeve of insulation between the shift fork, and the driving snake with spiral damping tin bronze belt and spiral positioning steel belt layer guaranteed the concentricity and the power transmission efficiency of each parts, reduced vibration and noise in the power transport process.Flexible axle and the three points centering between motor and the working portion are installed and removed positioner fast can guarantee that the axle core of the several sections that couples together is concentric, and fast assembling and disassembling, and operation of medical workers is simplified.Sealing device on the rifle formula mobile phone improves mobile phone movement and extraneous seal, has stopped the patient in the operation and has infected and the corrosive problem of movement, also is convenient to clean and sterilization.Simultaneously, also further reduced noise.So, the utlity model has that cutting speed is fast, low noise, anti-pollution, anti-corrosion, easily sterilize, insulate, easy-to-dismount characteristics, on the clinical medicine to human body everywhere the cutting operation of skeleton convenience is provided.

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

Fig. 1 is the structural representation of motor;

Fig. 2 is the syndeton sketch map between motor, flexible axle and the rifle formula mobile phone;

Fig. 3 is the flexible axle structural representation;

Fig. 4 is the rifle formula handset structure sketch map that links with flexible axle;

Fig. 5 is the vertical view of mobile phone;

Fig. 6 is a schematic appearance of the present utility model;

Fig. 7 is the circuit diagram of reciprocating bone saw shown in Figure 1;

Fig. 8 grips structure diagram for existing swing type bone saw saw blade;

Fig. 9 is the structural representation of this utility model swing type bone saw saw head.

Embodiment 1:

As shown in Figure 6, this electric high-speed reciprocating bone saw includes power source 1, actuating device 2, working portion 3 and footbrake device 4.

As Fig. 1; shown in 2; power source is a motor 1; selecting model for use is the motor of S368BW; its output shaft 11 is provided with seal 12; seal 12 is a pair of seal; its shift fork 120 and insulation output seat 122 of being made by an insulant is formed; a shift fork 120 and a metallic sheath 121 are spirally connected; metallic sheath 121 is connected with the bright finish shaft part tight fit of motor shaft; a plain washer 123 is spirally connected on the screw thread of the axle head of the output shaft 11 of motor 1; one elastic washer 124 and a locking female 125; by locking female 125; elastic washer 124 acts on the locking of the power realization shift fork of metallic sheath 121 end faces, obtains overload protection function simultaneously.Establish screw thread on the metallic sheath 121, an end of shift fork 120 is spirally connected, the other end of shift fork 120 is connected with actuating device 2, the also affixed insulation output seat 122 in the end of motor, the one end is fixed on the end face of motor by screw, be connected with a delivery 13 that has a flange 131 at the other end, the flange 131 on the delivery 13 is affixed with the casing 14 of motor 1 end and insulation output seat 122, also is provided with an insulating washer 15 between flange and motor housing.Pad 15 can insulate effectively from electric leakage possible on the motor housing 14.The output shaft 11 that has the motor 1 of seal 12 places in the delivery 13, and intrinsic one " O " RunddichtringO 132 also is provided with a concave ring groove 133 on the excircle of the end of delivery 13 on its excircle.

Shown in Fig. 2,3, actuating device 2 is a power transmission flexible axle, its by the link 20 at two and 20 ' and flexible axle body 20 " form, its two ends set firmly high-accuracy ball bearing device 21.The flexible axle body 20 of driving snake 2 " core be a steel wire strand 201, its outside be provided with a spiral damping tin bronze belt 202 and a spiral positioning steel belt layer 203, outermost is a rubber system protective layer 204.This driving snake can be a normal delivery power under 60 millimeters the state in bending radius, and damping performance is splendid, and hand-held this machine the sensation that fiber crops shake can not occur.

Shown in Fig. 2,4,5, working portion is a rifle formula mobile phone 3, is provided with a primary gear speed reducing mechanism 34 and an eccentric balance reciprocator 35 between the outer saw blade 33 of main shaft 31 that is connected with flexible axle 2 in the rifle formula mobile phone 3 and machine.For the purpose that realizes sealing, " O " RunddichtringO 36 is established in porch at the main shaft that is connected with driving snake of hand set machine shell 30, establish " O " RunddichtringO 37 in the hand set machine shell 30 and the exit of saw body exposed parts, cap 38 places in casing establish seal washer 381, establish " O " RunddichtringO 39 at the fabrication hole place of casing 30.

The output shaft 11 of power transmission flexible axle 2 and motor 1 links together by the quick mounting or dismounting positioner 22 of spheroid three points centering, the main shaft 31 of rifle formula mobile phone 3 links together with power transmission flexible axle 2 by the quick mounting or dismounting positioner 32 of spheroid three points centering, make the drive disk assembly in the motor-driven rifle formula mobile phone, the outer saw blade 33 of the machine that is connected with rifle formula mobile phone 3 is moved back and forth.

Shown in Fig. 2,3, be provided with the spheroid three points centering at an end of the driving snake 2 that links with motor 1 and install and remove positioner 22 fast, it includes locking bed 221, lock sleeve 222, locking member 223, elastic reset spare 224 and keeper 225, locking bed 221 is spirally connected with the bearing block 23 of flexible axle, lock sleeve 222 is located at the outside of locking bed 221, end at locking bed 221 sets firmly keeper, and promptly back-up ring 225, so that lock sleeve 222 places location on the locking bed 221.Locking member 223 is that the steel ball outside the two sides of locking bed 221 walls is all exposed in its two sides, and steel ball 223 can be made radial displacement ground build-in in the sidewall of locking bed 221 in locking bed 221, uniform three steel balls 223 on the circumference of locking bed.Be provided with elastic reset spare 224 between locking bed 221 and the lock sleeve 222, it is a stage clip.The inwall of lock sleeve 222 is provided with an annular groove 2221.With motor 1 with when flexible axle 2 is connected, delivery 13 on the motor 1 is plugged in the hole of the locking bed 221 on the flexible axle 2, simultaneously, insulation shift fork 120 is inserted on the link 20 of driving snake 2 on the termination 20a with shift fork 120 form fit, steel ball 223 falls in the concave ring groove 133 on the delivery 13 into, motor 1 and flexible axle 2 are located in the axial direction, " O " RunddichtringO 132 on the delivery 13 is against on the convex shoulder 2211 in locking bed 221 holes, its effect is that delivery 13 and locking bed 221 are separated, and produces the dither noise to avoid at work collision between the delivery 13 and locking bed 221.

Shown in Fig. 3,4, on the shell 30 of the rifle formula mobile phone 3 that is connected with driving snake 2, be provided with the spheroid three points centering and install and remove positioner 32 fast, it includes locking bed 321, lock sleeve 322, locking member 323, elastic reset spare 324 and keeper 325, locking bed 321 is spirally connected with the shell 30 of rifle formula mobile phone 3, lock sleeve 322 is located at the outside of locking bed 321, end at locking bed 321 sets firmly keeper, and promptly back-up ring 325, so that lock sleeve 322 places location on the locking bed 321.Locking member 323 is that the steel ball outside the two sides of locking bed 321 walls is all exposed in its two sides, and steel ball 323 can be made radial displacement ground build-in in the sidewall of locking bed 321 in locking bed 321, uniform three steel balls 323 on 321 circumference of locking bed.Be provided with elastic reset spare 324 between locking bed 321 and the lock sleeve 322, it is a stage clip.The inwall of lock sleeve 322 is provided with an annular groove 3221.With rifle formula mobile phone 3 with when flexible axle 2 is connected, link 20 ' on the flexible axle 2 is inserted in the hole that is screwed onto the locking bed 321 on the rifle formula mobile phone 3, the excircle of the link 20 ' of flexible axle 2 is provided with a concave ring groove 24, steel ball 323 falls into in the concave ring groove 24, play and make rifle formula mobile phone 3 and flexible axle 2 positioning action in the axial direction, the link 20 ' of flexible axle 2 is provided with " O " RunddichtringO 25, its effect is that link 20 ' and locking bed 321 are separated, and produces the dither noise to avoid at work collision between the link 20 ' and locking bed 321.

As shown in Figure 4, be provided with a stacker 326 in the hole of locking bed 321, its main shaft 33 with rifle formula mobile phone is connected, and stacker 326 is provided with the axial hole, is keyway on the hole wall, and the link 20 ' of flexible axle 3 is gone up the affixed key that is complementary.

Fig. 7 has represented the circuit connection structure of this reciprocating bone saw.

Embodiment 2:

As shown in Figure 9, working portion is a swing type saw head, and has constituted the swing type bone saw, is connected with an eccentric stiffener 52 on the main shaft that is connected with actuating device 51 of saw 5, and eccentric stiffener 52 drives a swing seat 53, fixes a saw blade 54 in the swing 53.Establish a shoulder hole with a degree of depth on the swing seat 54, a compressing member 55 is that a hexagon socket cap head screw 56 and an elastic washer are fixed on saw blade 54 on the swing seat 53 by a securing member.In the swing seat shoulder hole below saw blade 54 back-moving spring 57 is set.Between compressing member 55 and swing seat 53, be provided with alignment pin 58.Other structure of this swing type bone saw is with embodiment 1.

Claims (10)

1, a kind of electric high-speed bone saw includes power source, actuating device and working portion, and described power source is a motor, is provided with seal on the output shaft of motor; Described actuating device is a power transmission flexible axle; It is characterized in that: the output shaft of described power transmission flexible axle and motor and the main shaft of working portion link together by the quick mounting or dismounting positioner of three points centering, described three points centering is installed and removed positioner fast and is included locking bed, lock sleeve, locking member, elastic reset spare and keeper, described locking bed is located in the lock sleeve, all expose outside the two sides of locking bed wall the two sides of described locking member, and in the locking bed wall, can make radial displacement ground build-in in the sidewall of locking bed, be provided with elastic reset spare between locking bed and the lock sleeve, be provided with described keeper on locking bed, the inwall of lock sleeve is provided with an annular groove; The quick mounting or dismounting positioner of described three points centering is located on one of interconnective two parts, is provided with an annular groove in another part position of corresponding described locking member behind installation in position.

2, electric high-speed bone saw according to claim 1, it is characterized in that: described three points centering is installed and removed on flexible axle one end that positioner is fixed in motor and flexible axle connection fast, and corresponding described three points centering installs and removes fast that the locking member place establishes an annular groove in the positioner on the motor shaft; In the junction of flexible axle and working portion, described three points centering is installed and removed positioner fast and is fixed on the working portion, and corresponding described three points centering installs and removes fast that the locking member place establishes an annular groove in the positioner on the flexible axle.

3, electric high-speed bone saw according to claim 1 is characterized in that: described locking member is the sphere that is distributed on the locking bed sidewall circumference: described elastic reset spare is a stage clip.

4, according to claim 1 or 2 or 3 described electric high-speed bone saws, it is characterized in that: the described seal that is provided with on the output shaft of described motor is a shift fork of being made by insulant, one end and motor output shaft are affixed, and its other end is connected with described actuating device.

5, electric high-speed bone saw according to claim 3, it is characterized in that: the described seal that is provided with on the output shaft of described motor is two seals, it comprises insulation shift fork and insulation output seat, one end and the motor output shaft of described insulation shift fork are affixed, its other end is connected with described actuating device, on the end face of described insulation output seat, be provided with the delivery that one one end has flange, affixed with the end face of described insulation output seat, the described motor output shaft that has the shift fork that insulate places in the sleeve pipe of this delivery.

6, electric high-speed bone saw according to claim 5 is characterized in that: also be provided with an insulating washer between the flange of described delivery and motor housing.

7, according to claim 5 or 6 described electric high-speed bone saws, it is characterized in that: between the output shaft of described motor and described insulation shift fork, be provided with one with the friction tight axle sleeve of motor shaft, the described insulation shift fork that is spirally connected on its excircle, be spirally connected on the screw thread of the axle head of the output shaft of described motor an elastic washer and a locking are female.

8, electric high-speed bone saw according to claim 1; it is characterized in that: described power transmission flexible axle; its two ends set firmly ball bearing; the core of described driving snake is a steel wire strand; be provided with a spiral damping tin bronze belt and a spiral positioning steel belt layer in its outside, outermost is an elastomeric material protective layer.

9, electric high-speed bone saw according to claim 1, it is characterized in that: described working portion is a rifle formula mobile phone, be provided with a primary gear speed reducing mechanism and an eccentric balance reciprocator between the outer saw blade of main shaft that is connected with actuating device in the described rifle formula mobile phone and machine, at the inlet of the main shaft that is connected with driving snake of hand set machine shell, saw on the described rifle formula mobile phone upper casing of outlet of body exposed parts and be equipped with sealing gasket.

10, electric high-speed bone saw according to claim 1, it is characterized in that: described working portion is a swing type saw head, be connected with an eccentric stiffener on described saw head and the main shaft that actuating device is connected, described eccentric stiffener connects a swing seat, fixes a saw blade in the described swing; Establish a shoulder hole with a degree of depth on the described swing seat, a compressing member is fixed on saw blade on the described swing seat by a securing member, in the swing seat shoulder hole below saw blade a back-moving spring is set.

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