阅读说明：本技术 一种开颅手术用颅骨铣刀 (A kind of operation of opening cranium skull milling cutter ) 是由 韩易 郑夏林 孙涛 姜之全 娄飞云 张少军 于 2019-08-14 设计创作，主要内容包括：本发明公开了一种开颅手术用颅骨铣刀,包括壳体,所述壳体内腔向左贯穿延伸设置有分驱装置,所述分驱装置的左端固定连接有颅钻,所述壳体内固定连接有驱动装置,且所述驱动装置带动分驱装置转动,所述壳体的右侧固定连接有水冷系统,所述壳体的底部固定连接有手柄,且所述手柄的左侧设置有第一控制模块和第二控制模块。本发明通过对铣刀头的改进,太极状凸起能够将骨头进行削槽处理,太极状凸起保证了铣刀头的稳定性,避免在开颅操作中出现铣刀头滑动的情况,从而增加了手术的安全和稳定性,太极状凸起也增加了开槽的速度,并且能够保证骨屑向外部排出,便于对骨屑进行处理操作。(The invention discloses a kind of operation of opening cranium skull milling cutters, including shell, the housing cavity, which runs through to be extended to the left, a point driving device, the left end of described point of driving device is fixedly connected with cranium brill, driving device is fixedly connected in the shell, and driving device drive divides driving device to rotate, and is fixedly connected with water-cooling system on the right side of the shell, the bottom of the shell is fixedly connected with handle, and the first control module and the second control module are provided on the left of the handle.The present invention passes through the improvement to milling head, Tai Ji shape protrusion can carry out bone to cut slot processing, Tai Ji shape protrusion ensure that the stability of milling head, avoid the case where milling head sliding occur in opening cranium operation, to increase the safety and stability of operation, Tai Ji shape protrusion also increases the speed of fluting, and can guarantee that bone is considered to be worth doing and be discharged to outside, carries out processing operation convenient for considering to be worth doing to bone.)

1. a kind of operation of opening cranium skull milling cutter, including shell (1), it is characterised in that: shell (1) inner cavity is run through to the left prolongs It stretches and is provided with a point driving device (3), the left end for dividing driving device (3) is fixedly connected with cranium and bores (5), fixed in the shell (1) It is connected with driving device (6), and the driving device (6) drive divides driving device (3) to rotate, the right side of the shell (1) is fixed It is connected with water-cooling system (4), the bottom of the shell (1) is fixedly connected with handle (2), and the left side setting of the handle (2) There are the first control module (7) and the second control module (8)；

Described point of driving device (3) includes axle sleeve (31), and axle sleeve (31) right end is plugged on the left side of the shell (1), described It is socketed with hollow sleeve bar (32), is socketed with bull stick (33) in the hollow loop bar (32), the hollow loop bar in axle sleeve (31) (32) right end is fixedly connected with the first driving gear (37), and the right end of the bull stick (33) is fixedly connected with the second driving gear (36), the left end of the bull stick (33) is removably connected with milling head (35), and the left end of the hollow loop bar (32) is threadedly coupled Have connector sleeve (34), the left end of the bull stick (33) is threaded with connecting rod, and has cavity on the right side of the connecting rod, described Milling head (35) is socketed in the cavity；

It includes pore-creating head (51) and positioning head (52) that the cranium, which bores (5), and the pore-creating head (51) and the connector sleeve (34) Left side is fixedly connected, and the positioning head (52) is fixedly connected on the left end of the connecting rod；

The pore-creating head (51) includes annular bit (511), is provided with circular blade on the left of the annular bit (511) (512), the outer ring surface of the circular blade (512) offers concave surface (513), sets on the left of concave surface (513) inner wall It is set to wavy surface (514), is provided with sawtooth (515) on the left of the concave surface (513), the side table of the annular bit (511) Face offers S-shaped slot (516), and the circular blade (512) and the annular bit (511) go out continuously to offer multiple deflector chutes (517), the left side of the S-shaped slot (516) is connected with the inner cavity of the deflector chute (517)；

The positioning head (52) includes fixed link (521), and the left end of the fixed link (521) is provided with inner cavity, the fixed link (521) the right side rotation of inner cavity, which is connected with, squeezes spring (524), is threaded with spiral shell on the left of fixed link (521) inner cavity Bar (523), the right side of the screw rod (523) are fixedly connected with the left end for squeezing spring (524), the screw rod (523) Left end extends to the left side of the fixed link (521), and the left side of the screw rod (523) passes through center-pole (525) and the positioning It bores and is fixedly connected on the right side of (526), the side surface of the spitting drill (526) offers locating slot (527)；

The water-cooling system (4) includes connection ring (42), is socketed with fluid reservoir (41), the fluid reservoir in the connection ring (42) (41) it is provided on the left of tee tube (43), the top of the tee tube (43) is communicated with fliud flushing pipe (44)；

The driving device (6) includes electric pushrod (61), and the free end of the electric pushrod (61) is fixedly connected with servo electricity The output end of machine (62), the servo motor (62) is fixedly connected with double gear (63)；

First control module (7) is electrically connected with the servo motor (62), second control module (8) with it is described electronic Push rod (61) electrical connection.

2. a kind of operation of opening cranium skull milling cutter according to claim 1, it is characterised in that: the milling head (35) includes The left side annular of knife bar (351), knife bar (351) side surface is provided with blade (353), is opened on the left of the knife bar (351) It is raised (352) equipped with Tai Ji shape.

3. a kind of operation of opening cranium skull milling cutter according to claim 2, it is characterised in that: the number of the blade (353) Amount no less than three and not more than six, and the blade (353) is obliquely installed, the salient line of the Tai Ji shape raised (352) Place is provided with blade.

4. a kind of operation of opening cranium skull milling cutter according to claim 1, it is characterised in that: the sawtooth (515) includes Left-leaning tooth (5151) and Right deviation tooth (5152), the "Left"-deviationist tooth (5151) and Right deviation tooth (5152) are staggered.

5. a kind of operation of opening cranium skull milling cutter according to claim 1, it is characterised in that: the deflector chute (517) Groove depth is deepened at the S-shaped slot (516).

6. a kind of operation of opening cranium skull milling cutter according to claim 1, it is characterised in that: in the fixed link (521) It is fixedly connected on the right side of chamber spill spin block (522), the right end for squeezing spring (524) is fixedly connected on the spill spin block (522) left side.

7. a kind of operation of opening cranium skull milling cutter according to claim 1, it is characterised in that: locating slot (527) packet Include stern notch (5272) and locking groove (5271), the locking groove (5271) is half circle groove, and the top of locking groove (5271) inner wall For protrusion and extend to outer, the stern notch (5272) is three, and three stern notches (5272) it is equidistant be provided with it is described fixed Bore the side surface of (526) in position.

8. a kind of operation of opening cranium skull milling cutter according to claim 1, it is characterised in that: double gear (63) position Between first driving gear (37) and second driving gear (36), and double gear (63) two sides correspondence is opened Equipped with first driving gear (37) and it is described second drive gear (36) matched teeth.

Technical field

The present invention relates to field of medical technology, specially a kind of operation of opening cranium skull milling cutter.

Background technique

Operation of opening cranium, also known as craniotomy are one kind of skull surgical operation, refer to and open patient's skull by mechanical equipment, To carry out some nonroutine treatments.The step of opening patient's skull is common, and first three-point fix goes out location hole in region, then uses Milling cutter will be cut between location hole, so that skull be removed, this process can often use skull milling cutter and drilling is bored, skull milling cutter and It is the common operation of opening cranium instrument of neurosurgery that drilling, which is bored, when carrying out cerebral surgery operation, passes through high-speed rotating milling list Member cuts skull.

When three holes position, needing for skull to be cut into a hole, existing mode of operation directlys adopt trepan punching, And trepan punching mode when aperture starts, since skull is harder and is spheroidal, annular bit connects with skull face Not fully, to easily slide, the case where sliding, occurs easily causing soft tissue injury, and will affect tap operation for touching, In addition, the skull that can also cut is not easy to take out out of hole after completing pore-creating；

In Twist Drill Hole, the bone bits particle that existing bore cutter generates is larger, and cut surface is coarse, the big bone of particle If bits enter the unclear reason of big intracerebral, certain influence can be generated to postoperative, there is hiding risk, in addition bone bits remain in When cut surface, cutting can also be had an impact, when bone bits are deposited in certain, will cause and go wrong in skull cutting, and And the equipment for telling rotation is not easy to catch, and increases the risk of operation；

In cutting, since high-speed rotating bone drill and skull friction can generate heat, the main reason for bad student's heat, is In addition be the overlong time contacted between bone drill and skull due to the friction between bone drill and skull, generally using laborsaving water into The mode that row rinses, existing mode need external staff to cooperate, and influence the efficiency of operation in this way；

After completing location hole pore-creating, need to cut between two holes using cutter i.e. milling cutter, existing mode It is cut using equipment in two, increases the cost in art, and existing milling cutter is also not easy to be controlled in use, makes There is also risks in.

Summary of the invention

To achieve the above object, the invention provides the following technical scheme: a kind of operation of opening cranium skull milling cutter, including shell Body, the housing cavity, which runs through to be extended to the left, a point driving device, and the left end for dividing driving device is fixedly connected with cranium brill, institute It states and is fixedly connected with driving device in shell, and driving device drive divides driving device to rotate, the right side of the shell is fixed It is connected with water-cooling system, the bottom of the shell is fixedly connected with handle, and the first control mould is provided on the left of the handle Block and the second control module；

Described point of driving device includes axle sleeve, and the axle sleeve right end is plugged on the left side of the shell, socket in the axle sleeve There is hollow loop bar, the hollow loop bar inner sleeve is connected to bull stick, and the right end of the hollow loop bar is fixedly connected with the first driving gear, The right end of the bull stick is fixedly connected with the second driving gear, and the left end of the bull stick is removably connected with milling head, it is described in The left end of empty set bar is threaded with connector sleeve, and the left end of the bull stick is threaded with connecting rod, and on the right side of the connecting rod With cavity, the milling head is socketed in the cavity；

It includes pore-creating head and positioning head that the cranium, which bores, and is fixedly connected on the left of the pore-creating head and the connector sleeve, institute State the left end that positioning head is fixedly connected on the connecting rod；

The pore-creating head includes annular bit, and circular blade, the circular blade are provided on the left of the annular bit Outer ring surface offer concave surface, wavy surface is set as on the left of the concave surface inner wall, is provided on the left of the concave surface Sawtooth, the side surface of the annular bit offer S-shaped slot, and the circular blade and the annular bit continuously offer more out The left side of a deflector chute, the S-shaped slot is connected with the inner cavity of the deflector chute；

The positioning head includes fixed link, and the left end of the fixed link is provided with inner cavity, the right side of the fixed link inner cavity Rotation is connected with extruding spring, and screw rod is threaded on the left of the fixed link inner cavity, and the right side of the screw rod is squeezed with described The left end of pressing spring is fixedly connected, and the left end of the screw rod extends to the left side of the fixed link, is passed through on the left of the screw rod It is fixedly connected on the right side of center-pole and the spitting drill, the side surface of the spitting drill offers locating slot；

The water-cooling system includes connection ring, and fluid reservoir, the left side setting of the fluid reservoir are socketed in the connection ring There is tee tube, the top of the tee tube is communicated with fliud flushing pipe；

The driving device includes electric pushrod, and the free end of the electric pushrod is fixedly connected with servo motor, described The output end of servo motor is fixedly connected with double gear；

First control module is electrically connected with the servo motor, second control module and electric pushrod electricity Connection.

Preferably, the milling head includes knife bar, and the left side annular of the knife bar side surface is provided with blade, the knife bar Left side offer Tai Ji shape protrusion.

Preferably, the quantity of the blade is no less than three and not more than six, and the blade tilt is arranged, it is described too Blade is provided at the salient line of pole shape protrusion.

Preferably, the sawtooth includes left-leaning tooth and Right deviation tooth, and the "Left"-deviationist tooth and Right deviation tooth are staggered.

Preferably, the groove depth of the deflector chute is deepened at the S-shaped slot.

Preferably, spill spin block is fixedly connected on the right side of the fixed link inner cavity, the right end for squeezing spring is fixed to be connected It connects in the left side of the spill spin block.

Preferably, the locating slot includes stern notch and locking groove, and the locking groove is half circle groove, and the top of locking groove inner wall Outside portion is protrusion and extends to, the stern notch is three, and the equidistant side table for being provided with the spitting drill of three stern notches Face.

Preferably, the double gear is located between the first driving gear and the second driving gear, and described Double gear two sides are corresponding to be offered and the first driving gear and the second driving matched teeth of gear.

(3) beneficial effect

The present invention provides a kind of operation of opening cranium skull milling cutters.Have it is following the utility model has the advantages that

(1), the present invention is led to by the way that dividing driving device to improve, in operation, which is able to carry out out the diverse operations in cranium The position of shift servo motor is crossed, milling bone, positioning and piercing procedure can be carried out, it is non-interference, convenient for adjusting.

(2), by the improvement to milling head, Tai Ji shape protrusion can carry out bone to cut slot processing, Tai Ji shape the present invention Protrusion ensure that the stability of milling head, avoid the case where milling head sliding occur in opening cranium operation, to increase operation Safety and stability, Tai Ji shape protrusion also increases the speed of fluting, and can guarantee that bone is considered to be worth doing and be discharged to outside, convenient for pair Bone bits carry out processing operation.

(3), the present invention is by the improvement to pore-creating head, and in pore-creating, the sawtooth being arranged on circular blade can be quick Mill being carried out to skull progress skull to cut, during mill is cut, bone can be considered to be worth doing and be stored by concave surface, when the bone of inside bits increase, Bone bits can be sent in deflector chute from concave surface, entered back into deflector chute and entered in S-shaped slot, so that bone bits are quickly discharged, Due to the annular bit in rotation interior and exterior with cutting face contact, at this point, concave surface and when bone face contact, can guarantee bone The preferable storage of bits avoids the problem that intracerebral residual bone bits are not easily cleaned appearance, can reduce the cleanup step in operation.

(4), by the improvement to positioning head, spitting drill bores the present invention above and below skull, after getting into certain depth instantly, In Under the limitation of locating slot, screw rod is rotated in bottom of fixed, and is detached from the bottom of fixed link inner wall, and center-pole can be realized at this time Idle running can guarantee that annular bit rotates on the position in spitting drill axle center, annular bit is avoided to go out after completing this operation The case where now skidding ensure that the security performance for each link of performing the operation, and the annular bit for avoiding the occurrence of sliding causes patient Soft tissue injury, and after completion pore-creating, under the action of spitting drill, round bone can quickly be taken out, and be grasped without surgical clamp Make, it is very convenient.

(5), the present invention is by opening beginning through increasing pump the physiological saline in fluid reservoir capable of being discharged for cranium, In Start to carry out spray cooling when operation, and in operation cooling operation, the clast of generation can be discharged for physiological saline.

Detailed description of the invention

Fig. 1 is schematic diagram of the invention；

Fig. 2 is the schematic diagram that structure of the invention divides driving device；

Fig. 3 is enlarged drawing at A in structure of the invention Fig. 2；

Fig. 4 is the schematic diagram that structure of the invention cranium bores；

Fig. 5 is the enlarged drawing in structure of the invention Fig. 4 at B；

Fig. 6 is the layout viewing of the left and right tooth that inclines of structure of the invention；

Fig. 7 is the schematic diagram of structure of the invention positioning head.

Element title in figure:

1 shell, 2 handles, 3 points of driving devices, 31 axle sleeves, 32 hollow loop bars, 33 bull sticks, 34 connector sleeves, 35 milling heads, 351 Knife bar, 352 Tai Ji shape protrusions, 353 blades, 36 second driving gears, 37 first driving gears, 4 water-cooling systems, 41 fluid reservoirs, 42 connection rings, 43 tee tubes, 44 fliud flushing pipes, 5 craniums brill, 51 pore-creating heads, 511 annular bits, 512 circular blades, 513 concave surfaces, 514 wavy surfaces, 515 sawtooth, 5151 left-leaning teeth, 5152 Right deviation teeth, 516S shape slot, 517 deflector chutes, 52 positioning heads, 521 are fixed Bar, 522 spill spin blocks, 523 screw rods, 524 squeeze springs, 525 center-poles, 526 spitting drills, 527 locating slots, 5271 locking grooves, 5272 stern notches, 6 driving devices, 61 electric pushrods, 62 servo motors, 63 double gears, 7 first control modules, 8 second control moulds Block.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

As shown in figs. 1-7, the present invention provides a kind of technical solution: a kind of operation of opening cranium skull milling cutter, including shell 1, 1 inner cavity of shell, which is run through to be extended to the left, point driving device 3, divides the left end of driving device 3 to be fixedly connected with cranium and bores 5, consolidates in shell 1 Surely it is connected with driving device 6, and the drive of driving device 6 divides driving device 3 to rotate, the right side of shell 1 is fixedly connected with water-cooling system 4, the bottom of shell 1 is fixedly connected with handle 2, and the left side of handle 2 is provided with the first control module 7 and the second control module 8；

Dividing driving device 3 includes axle sleeve 31, and 31 right end of axle sleeve is plugged on the left side of shell 1, and axle sleeve 31 entirely divides for fixed Driving device 3 guarantees the left end for dividing driving device 3 fixed with shell 1, is socketed with hollow sleeve bar 32 in axle sleeve 31, in hollow loop bar 32 It is socketed with bull stick 33, bull stick 33 can rotate in hollow loop bar 32, and the right end of hollow loop bar 32 is fixedly connected with the first driving Gear 37, the right end of bull stick 33 are fixedly connected with the second driving gear 36, and the left end of bull stick 33 is removably connected with milling head 35, The left end of hollow loop bar 32 is threaded with connector sleeve 34, and the left end of bull stick 33 is threaded with connecting rod, and on the right side of connecting rod With cavity, milling head 35 is socketed in cavity, in surgical procedure, be can be realized and is removed connector sleeve 34 and connecting rod, is used In milling bone operation, this device realizes two kinds of modes of operation, preoperative positioning drilling and the operation of preoperative milling bone, functional, hand Art midway can quickly dismantle cranium brill 5 and carry out milling bone operation；

It includes pore-creating head 51 and positioning head 52 that cranium, which bores 5, and pore-creating head 51 is fixedly connected with the left side of connector sleeve 34, positioning head 52 are fixedly connected on the left end of connecting rod；

Pore-creating head 51 includes annular bit 511, and the left side of annular bit 511 is provided with circular blade 512, circular blade 512 outer ring surface offers concave surface 513, and wavy surface 514, the left side of concave surface 513 are set as on the left of 513 inner wall of concave surface It is provided with sawtooth 515, the side surface of annular bit 511 offers S-shaped slot 516, and circular blade 512 goes out to connect with annular bit 511 Continuous to offer multiple deflector chutes 517, the left side of S-shaped slot 516 is connected with the inner cavity of deflector chute 517, in pore-creating, circular blade The sawtooth 515 being arranged on 512 quickly can carry out mill to skull progress skull and cut, during mill is cut, 513 energy of concave surface Enough consider bone to be worth doing is stored, and when internal bone bits increase, bone bits can be sent in deflector chute 517 from concave surface 513, entered back into and led Hopper 517 enters in S-shaped slot 516, so that bone bits are quickly discharged, since the interior and exterior of the annular bit 511 in rotation is equal With cutting face contact, at this point, concave surface 513 and when bone face contact, can guarantee the preferable storage of bone bits, intracerebral is avoided to remain bone The problem of bits are not easily cleaned appearance, can reduce the cleanup step in operation；

Positioning head 52 includes fixed link 521, and the left end of fixed link 521 is provided with inner cavity, the right side rotation of 521 inner cavity of fixed link Turn to be connected with and squeeze spring 524, is threaded with screw rod 523, the right side of screw rod 523 and extruding on the left of 521 inner cavity of fixed link The left end of spring 524 is fixedly connected, and the left end of screw rod 523 extends to the left side of fixed link 521, during the left side of screw rod 523 passes through Core bar 525 is fixedly connected with the right side of spitting drill 526, and the side surface of spitting drill 526 offers locating slot 527, in operation of opening cranium In, it chooses location hole and opens when making position, firstly, spitting drill 526 is placed at the center of pore-creating, starter, spitting drill 526 exists Skull bores up and down, after getting into certain depth instantly, under the limitation of locating slot 527, screw rod 523 in 521 lower rotation of fixed link, And it is detached from the bottom of 521 inner wall of fixed link, center-pole 525 can be realized idle running at this time, after completing this operation, can guarantee ring The case where shape drill bit 511 rotates on the position in 526 axle center of spitting drill, and annular bit 511 is avoided to have skidded, ensure that hand The security performance of each link of art, and the annular bit 511 for avoiding the occurrence of sliding causes soft patient tissues injured, and completes After pore-creating, under the action of spitting drill 526, round bone can quickly be taken out, and be operated without surgical clamp, very convenient；

Water-cooling system 4 includes connection ring 42, is socketed with fluid reservoir 41 in connection ring 42, the left side of fluid reservoir 41 is provided with three Siphunculus 43, the top of tee tube 43 are communicated with fliud flushing pipe 44, the bottom end of tee tube 43 is connected to booster pump, start to lead to opening cranium Crossing increasing pump, the physiological saline in fluid reservoir 41 can be discharged, and by the requirement of this scheme, be sprayed when starting operation Water cooling, and in operation cooling operation, the clast of generation can be discharged for physiological saline；

Driving device 6 includes electric pushrod 61, and the free end of electric pushrod 61 is fixedly connected with servo motor 62, servo electricity The output end of machine 62 is fixedly connected with double gear 63；First control module 7 is electrically connected with servo motor 62, the second control module 8 are electrically connected with electric pushrod 61, press 8 electric pushrod 61 of the second control module and are able to drive servo motor 62 and move left and right, from And piercing procedure can be selected still to mill bone operation more according to the requirement of operation, the first control module 7 can control servo Motor 62 is run.

One of embodiment as shown in Figure 3, milling head 35 include knife bar 351, the left side ring of 351 side surface of knife bar Shape is provided with blade 353, and the left side of knife bar 351 offers Tai Ji shape protrusion 352, and Tai Ji shape protrusion 352 is placed in location hole Side, be provided with blade at the salient line of Tai Ji shape protrusion 352, in raised 352 high-speed rotation of Tai Ji shape, Tai Ji shape protrusion 352 can carry out bone to cut slot processing, and Tai Ji shape protrusion 352 ensure that the stability of milling head 35, avoid opening cranium operation In occur milling head 35 sliding the case where, to increase the safety and stability of operation, Tai Ji shape protrusion 352 is also increased out The speed of slot, and can guarantee that bone is considered to be worth doing and be discharged to outside, processing operation is carried out convenient for considering to be worth doing to bone.

It in the present invention program, is advanced optimized according to above-described embodiment, the quantity of blade 353 is no less than three and is not more than Six, blade 353 is arranged three to six, in the identical situation of revolving speed, can increase the efficiency of milling bone, and ensure that milling face Integrality, and blade 353 is obliquely installed, be obliquely installed it is helpful be that it is possible to considering bone into outlet to be worth doing, and can be by Tai Ji shape The bone bits generated at protrusion 352 are sent out, and avoid out the bone bits for generating angle at cranium from entering in brain tissue, additionally it is possible at bone bits That manages is smaller, is not only convenient for handling, additionally it is possible to which the bone bits for solving bulky grain generate, and cause the damage of brain tissue.

One of embodiment as shown in FIG. 6, sawtooth 515 include left-leaning tooth 5151 and Right deviation tooth 5152, left-leaning tooth 5151 and Right deviation tooth 5152 be staggered, the setting of left-leaning tooth 5151 and Right deviation tooth 5152 can respectively cut the face of cutting It cuts, ensure that the slickness in the face of cutting, moreover it is possible to increase the efficiency cut, and the time-consuming cut is less, it is most important that reduce The generation of heat, avoids the occurrence of excessively high the problem of the causing brain injury appearance of heat.

In order to increase better discharge in poration process, specifically, the groove depth of deflector chute 517 is deepened at S-shaped slot 516, It is stepped up due to bone bits in cutting, the groove depth of deflector chute 517 adds to intensification at S-shaped slot 516 to the direction of discharge It is deep, to increase the quick of guide and improve the efficiency of guide.

Specifically, being fixedly connected with spill spin block 522 on the right side of 521 inner cavity of fixed link, the fixed company of right end of spring 524 is squeezed Connect in the left side of spill spin block 522, can guarantee screw rod 523 be detached from be threadedly coupled after, always with the bottom of 521 inner wall of fixed link Overlap joint, convenient for the reset processing in later period.

Specifically, locating slot 527 includes stern notch 5272 and locking groove 5271, and locking groove 5271 is half circle groove, and locking groove The top of 5271 inner walls is protrusion and extends to outer, and stern notch 5272 is three, and three stern notches 5272 are equidistant is provided with positioning The top of 5271 inner wall of locking groove is protrusion and extends to outer design, when protrusion and bone face contact by the side surface for boring 526 Afterwards, under the action of limitation, spitting drill 526 stops operating, and screw rod 523, which is detached from, to be threadedly coupled, and then double gear 63 is adjusted to First driving 37 position of gear, is able to carry out piercing procedure, and upon completion of the operation, spitting drill 526 can pick up cutting bone, non- Normal simplicity.

Specifically, double gear 63 is located between the first driving gear 37 and the second driving gear 36, and double gear 63 Corresponding offer in two sides drives with the first driving gear 37 and the second driving matched teeth of gear 36, double gear 63 and first Gear 37 engage, be able to carry out piercing procedure, when double gear 63 with second driving gear 36 engage, be able to carry out milling bone and determine Bit manipulation.

Working principle:

1, in use, pressing the second control module 8, electric pushrod 61 is able to drive servo motor 62 and moves right, double Gear 63 is engaged with the second driving gear 36, presses the first control module 7 again at this time, servo motor 62 is able to drive the second driving Gear 36 rotates, and spitting drill 526 rotates at this time；

2, it in operation of opening cranium, chooses location hole and opens when making position, firstly, spitting drill 526 is placed at the center of pore-creating, Starter, spitting drill 526 bores above and below skull, after getting into certain depth instantly, under the limitation of locating slot 527, and screw rod 523 In 521 lower rotation of fixed link, and it is detached from the bottom of 521 inner wall of fixed link, center-pole 525 can be realized idle running at this time, complete After this operation, it can guarantee that annular bit 511 rotates on the position in 526 axle center of spitting drill；

3, the second control module 8 is pressed again, and electric pushrod 61 is able to drive servo motor 62 and is moved to the left, double gear 63 It is engaged with the first driving gear 37, at this point, pressing the first control module 7 again, servo motor 62 is able to drive the first driving gear 37 rotations；

4, in pore-creating, the sawtooth 515 being arranged on circular blade 512 quickly can carry out skull to skull and grind It cuts, during mill is cut, bone can be considered to be worth doing and be stored by concave surface 513, and when internal bone bits increase, bone bits can be from concave surface 513 are sent in deflector chute 517, enter back into deflector chute 517 and enter in S-shaped slot 516, so that bone bits are quickly discharged, due to The interior and exterior of annular bit 511 in rotation with cutting face contact, at this point, concave surface 513 and when bone face contact, can guarantee The preferable storage of bone bits avoids the problem that intracerebral residual bone bits are not easily cleaned appearance, can reduce the cleanup step in operation；

5, rotation connection covers 34 and connecting rod first, can expose milling head 35, is able to carry out milling bone operation at this time, presses Dynamic second control module 8, electric pushrod 61 are able to drive servo motor 62 and move right, double gear 63 and the second driving gear 36 engagements, press the first control module 7 again at this time, and servo motor 62 is able to drive the rotation of the second driving gear 36；

6, by milling head 35 and bone face contact, it is provided with blade at the salient line of Tai Ji shape protrusion 352, in Tai Ji shape protrusion When 352 high-speed rotation, Tai Ji shape protrusion 352 can carry out bone to cut slot processing, and Tai Ji shape protrusion 352 ensure that milling head 35 Stability, avoid occurring the case where sliding of milling head 35 in opening cranium operation, to increase the safety and stability of operation, Tai Ji shape protrusion 352 also increases the speed of fluting, and can guarantee that bone is considered to be worth doing and be discharged to outside, convenient for handling bone bits Operation.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.

It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.