CN202104982U - Orthopedics grinding drill capable of changing directions - Google Patents

Orthopedics grinding drill capable of changing directions Download PDF

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Publication number
CN202104982U
CN202104982U CN2011201460220U CN201120146022U CN202104982U CN 202104982 U CN202104982 U CN 202104982U CN 2011201460220 U CN2011201460220 U CN 2011201460220U CN 201120146022 U CN201120146022 U CN 201120146022U CN 202104982 U CN202104982 U CN 202104982U
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China
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drill
plate
connected
grinding
rod
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CN2011201460220U
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Chinese (zh)
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吴天昊
吴希瑞
孙涛
张英泽
扈文海
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孙涛
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Priority to CN2011201460220U priority Critical patent/CN202104982U/en
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Publication of CN202104982U publication Critical patent/CN202104982U/en

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Abstract

An orthopedics grinding drill capable of changing directions belongs to the technical field of orthopedics operation instruments and is used for grinding in the skeleton with changeable directions. The technical scheme is that the orthopedics grinding drill capable of changing the directions comprises a drill sleeve, a steering plate, a pushing plate, a pushing rod, a grinding head, a flexible drill rod, a drill rod and a front top plate. The drill sleeve is a cylinder, the upper edge of the steering plate is connected onto a steering shaft, two ends of the steering shaft are fixed on the inner wall of the drill sleeve, and the lower edge of the steering plate is connected with the front edge of the pushing plate through a rotating shaft. The rear edge of the pushing plate is connected with the pushing rod through a rotating shaft, and the rear end of the pushing rod is connected with a pushing device. The grinding head which is connected onto the center of the steering plate is rotatably connected with a connecting hole, the rear end of the grinding head is connected with the flexible drill rod, and the rear end of the flexible drill rod is connected with the drill rod which is connected with a clamping head of the drill head. The steering plate and the pushing plate are driven by the pushing rod to rotate upwards, and then the grinding head is driven to rotate upwards. The flexible drill rod can drive the grinding head to perform grinding with changeable directions, thereby achieving the effect of enlarging holes of the skeleton.

Description

一种可以变换方向的骨科磨削钻 Orthopedic Drill grinding a way to change direction

技术领域 FIELD

[0001] 本实用新型涉及一种微创手术中使用的骨科磨削钻,属于骨科手术器械技术领域。 [0001] The present invention relates to a minimally invasive orthopedic grinding the drill used in surgery, belongs to the field of orthopedic surgical instruments.

背景技术 Background technique

[0002] 随着医疗技术的发展,在各科手术中大量使用了微创手术。 [0002] With the development of medical technology, in subjects surgery extensive use of minimally invasive surgery. 微创手术不但具有快速、安全、效果好、副作用少的优点,还可以减轻患者的痛苦和治疗时间。 Minimally invasive surgery is not only fast, safe, effective, less side effects advantages, can also alleviate the suffering of patients and duration of treatment. 骨科手术中同样也有很多手术采取了微创手术,取得了很好的效果。 Orthopedic surgery also has taken a lot of surgery minimally invasive surgery, and achieved good results. 在手术中发现,由于骨科微创手术在骨骼上的钻孔很小,而对于在骨骼中需要较大手术孔洞时,必须将钻孔扩大,使钻孔的直径与所需要的孔洞的大小相同,这时微创手术就受到了限制,不能发挥微创手术的优越性。 Found in surgery, minimally invasive surgery because orthopedic drill holes in the bone is small, the time required for the surgery large hole in the bone must be drilled to expand the diameter of the bore hole with the same size as required , then minimally invasive surgery has been limited, we can not play the advantages of minimally invasive surgery. 为此, 医务人员希望能够开发一种在仍然采用微创钻孔的前提下能够扩大骨骼内部的手术孔洞的器械,以达到充分发挥微创手术优点的目的。 To this end, the medical staff hope to develop a way to expand the surgical instrument hole inside the bone under the premise is still minimally invasive drilling, in order to achieve full play to the advantages of minimally invasive surgery.

实用新型内容 SUMMARY

[0003] 本实用新型所要解决的技术问题是提供一种能够在微创手术中将骨骼内的孔洞进行扩大的可以变换方向的骨科磨削钻。 [0003] The present invention is to solve the technical problem is to provide a hole in the bone in a minimally invasive surgery can be enlarged grinding change direction orthopedic drill.

[0004] 解决上述技术问题的技术方案是: [0004] achieve the above technical solution is:

[0005] 一种可以变换方向的骨科磨削钻,它由钻套、转向板、推板、推杆、磨削头、软钻杆、 钻杆、前顶板组成,钻套为圆筒体,转向板和推板为大小相同的方形板,转向板在钻套内腔中与钻套的轴线垂直,转向板的上边连接在转向轴上,转向轴两端固定在钻套的内壁上,转向板的下边与推板前边通过转轴相连接,推板的后边通过转轴与推杆相连接,推杆沿着钻套的轴线,其后端与推动装置相连接,在转向板的中心有连接孔,磨削头在连接孔前方,与连接孔为可转动连接,磨削头的后端通过连接孔与软钻杆相连接,软钻杆的后端与钻杆相连接,钻杆与钻头的卡头相连接,前顶板连接在钻套的前端。 [0005] orthopedic drill grinding a way change direction, which is set by the drill, a steering plate, the push plate, the push rod, grinding head, a soft drill pipe, drill pipe, front top plate composed of a cylindrical drill sleeve body, deflection plate and the push plates are the same size square plate, the diverter plate in the drill sleeve cavity axis perpendicular to the drill sleeve, a steering plate connected to the upper steering shaft, a steering shaft is fixed to both ends of the inner wall of the drill sleeve, steering the lower plate and the push plate through a rotating shaft connected to the front, rear push plates via a shaft connected to the push rod, the push rod along the axis of the drill sleeve, and urging means which is connected to a rear end, a connecting hole in the center of the steering plate grinding head connected to the front hole, to be rotatably connected to the connecting hole, the rear end of the grinding head is connected by flexible connecting drill hole, the drill pipe and the rear end of the flexible rod connected to the drill pipe and the drill bit the chuck is connected to a front end connected to the top plate before the drill sleeve.

[0006] 上述可以变换方向的骨科磨削钻,所述的转向板的连接孔上嵌有转动轴承,磨削头固定在磨削头连接杆上,磨削头连接杆与转动轴承的内环配合连接。 [0006] The above-described grinding orthopedic drilling direction can be changed, the steering bearing rotatably embedded in the connection hole plate, the grinding head is fixed grinding head connecting rod, connecting rod to the grinding head rotary bearing inner ring fit connection.

[0007] 上述可以变换方向的骨科磨削钻,所述推杆为两根,两根推杆的前端分别连接在推板后部的两侧,两根推杆的后端相连接。 Orthopedic Grinding [0007] The drilling direction can be changed, the plunger is two, the front end of the push rod are connected to two sides of the rear of the push plate, the rear end of the push rod is connected to two.

[0008] 上述可以变换方向的骨科磨削钻,所述的推动装置是杠杆,杠杆的中部由转轴固定在钻套的后部,杠杆的一端与推杆的后端相连接。 [0008] The above-described grinding orthopedic drilling direction can be changed, the urging means is a lever, the middle of the rear portion of the lever shaft is fixed by the drill sleeve, and the rear end of the lever is connected to the push rod.

[0009] 上述可以变换方向的骨科磨削钻,所述钻套的后部有后端板,后端板与钻套轴线垂直,固定连接在钻套后端,后端板的中心嵌有转动轴承,转动轴承的内环与钻杆为配合连接。 [0009] The above-described grinding orthopedic drilling direction can be changed, the rear portion of the rear end of the bit holder plate, rear plate perpendicular to the axis of the drill sleeve, drill sleeve fixedly connected to the rear end, the rear end of the center plate rotates embedded bearing inner ring and the rotary bearing for the rod-fit connection.

[0010] 上述可以变换方向的骨科磨削钻,所述前顶板为竖直的顶板和两侧板组成,顶板位于磨削头前方,两侧板在磨削头两侧,两侧板与钻套前部为可拆卸连接。 [0010] The above-described grinding orthopedic drilling direction can be changed, the front top plate of the top and sides of the vertical plates, the top plate in front of the grinding head, grinding both sides of the head plate, the side plates and the drilling detachable connection to the front cover portion.

[0011] 采用这种结构的可以变换方向的骨科磨削钻,转向板和推板在推杆的推动下向上转动,同时带动磨削头向上转动,软钻杆可以起到带动磨削头变换方向进行磨削的作用,实现扩大骨骼孔洞的效果。 [0011] The direction of such a structure may be transformed orthopedic drill grinding, the steering plate and the push plate is rotated upwardly driven plunger, while driving the grinding head is rotated upward, the soft grinding rod can play a leading header conversion direction grinding action, to achieve the effect of the expansion of the bone hole. 本实用新型构思巧妙、设计合理、实施效果良好,是骨科微创手术中的新器具,具有较高的推广价值。 The present invention ingenious, reasonable design, implement good effect, is a new orthopedic minimally invasive surgery instruments, the promotion of high value.

附图说明 BRIEF DESCRIPTION

[0012] 图1是本实用新型的结构示意图; [0012] FIG. 1 is a structural diagram of the present invention novel;

[0013] 图2是图1的侧视图; [0013] FIG. 2 is a side view of Figure 1;

[0014] 图3是图1的俯视图; [0014] FIG. 3 is a plan view of Figure 1;

[0015] 图4是图1的AA剖视图; [0015] FIG. 4 is a sectional view AA of Figure 1;

[0016] 图5前顶板的结构示意图; [0016] Fig 5 a schematic front structure of the top plate;

[0017] 图6是本实用新型的使用状态图。 [0017] FIG. 6 is a state of use of the present invention in FIG.

[0018] 图中标记如下:钻套1、转向板2、推板3、推杆4、磨削头5、软钻杆6、钻杆7、转向轴8、转轴9、转动轴承10、磨削头连接杆11、杠杆12、后端板13、弹簧套14、复位弹簧15、前顶板16、连接片17、插孔18。 [0018] FIG labeled as follows: 1 bit holder, the steering plate 2, the push plate 3, the push rod 4, the grinding head 5, a soft drill rod 6, rod 7, a steering shaft 8, the shaft 9, the rotary bearing 10, ground Blades connecting rod 11, lever 12, 13, spring housing 14, a return spring 15, the rear end of the front roof plate 16, the connecting pieces 17, 18 jack.

具体实施方式 Detailed ways

[0019] 图中显示,本实用新型由钻套1、转向板2、推板3、推杆4、磨削头5、软钻杆6、钻杆7、前顶板16组成。 [0019] The figure shows the present invention by the drill sleeve 1, a steering plate 2, the push plate 3, the push rod 4, the grinding head 5, a soft drill rod 6, rod 7, the front top board 16 components.

[0020] 图中显示,钻套1为圆筒体,在钻套1内有转向板2、推板3、推杆4、磨削头5、软钻杆6、钻杆7。 [0020] The figure shows the bit holder has a cylindrical body 1, a steering plate in the drill sleeve 12, the push plate 3, the push rod 4, the grinding head 5, a soft drill rod 6, rod 7. 钻套1的前上方开口,开口的大小略大于磨削头5的大小。 A drill sleeve before the top opening is slightly larger than the size of the size of the opening 5 of the grinding head. 钻套1的后部有后端板13,后端板13垂直固定连接在钻套1后端,后端板13的中心嵌有转动轴承,转动轴承的内环与钻杆7为配合连接。 1 is a rear bit holder rear end plate 13, rear plate 13 is fixedly connected perpendicularly on the rear end of the drill sleeve 1, the rear end of the center plate 13 fitted with a rotary bearing, the rotary bearing inner ring and the rod 7 of the mating connector.

[0021] 图中显示,转向板2和推板3为大小相同的方形板,转向板2的上边连接在转向轴8上,转向轴8两端固定在钻套1的内壁上,在非工作状态时,转向板2在钻套1内腔中与钻套1的轴线垂直。 [0021] The figure shows, the steering plate 2 and the push plate 3 is the same size square plate, the upper plate 2 is connected to the steering to the steering shaft 8, the steering shaft 8 is fixed at both ends of the inner wall of the drill sleeve 1, work in the state, the steering plate 2 in a drill bushing with the lumen of the drill sleeve 1 a vertical axis.

[0022] 转向板2的下边与推板3前边通过转轴9相连接,推板3的后边通过转轴与推杆4相连接。 [0022] The steering lower plate 3 of the push plate 2 through a rotating shaft 9 is connected to front, rear plate 3 by pushing the push rod 4 is connected to the rotary shaft. 推杆4为两根,两根推杆4的前端分别连接在推板4后部的两侧,两根推杆4的后端相连接。 Ram 4 is two, two front end of the push rod 4 are connected to both sides of the rear of the push plate 4, the rear end of two push rod 4 is connected.

[0023] 在转向板2的中心有连接孔,连接孔上嵌有转动轴承10,磨削头5固定在磨削头连接杆11上,磨削头连接杆11与转动轴承10的内环配合连接。 [0023] In the center of the steering plate has a connecting hole 2, there is rotatably fitted on a bearing coupling holes 10, the grinding head 5 is fixed to the rod 11 connected to the grinding head, grinding head 11 and the connecting rod rotary bearing inner ring fitting 10 connection. 磨削头5的前部为半球体, 磨削头5圆周上均布有尖锐的磨削粒。 The grinding head 5 to the front portion of a hemisphere, a sharp uniform grinding particles on the grinding head 5 circumferential.

[0024] 图中显示,本实用新型的驱动装置包括软钻杆6和钻杆7。 [0024] The figure shows the drive device according to the present invention comprises a flexible drill rod 6, and 7. 磨削头连接杆11的后端与软钻杆6相连接,软钻杆6的后端与钻杆7相连接,钻杆7与钻头的卡头相连接。 The grinding head 11 of the rear end of the connecting rod and the drill pipe 6 is connected to a soft, flexible drill rod 6, 7 and the rear end is connected to the chuck and the drill rod 7 is connected. 在软钻杆6外有弹簧套14。 In soft outer rod 6 a spring sleeve 14.

[0025] 图中显示,本实用新型的推动装置是杠杆12,杠杆12的中部由转轴固定在钻套1 的后部的把手上,杠杆12的一端与推杆4的后端相连接,推动杠杆12的另一端即可向前推动推杆4。 [0025] The figure shows that the present invention is a lever urging means 12, the central shaft fixed to the lever 12 by the drill sleeve 1 on the rear handle, and the rear end of the lever 12 is connected to the push rod 4, to promote the other end of the lever 12 to push forward the push rod 4. 在杠杆12的另一端还有复位弹簧15。 At the other end of the lever 12 there is a return spring 15.

[0026] 图中显示,本实用新型钻套1的前部有前顶板16,它的作用是将钻套1的前伸位置定位。 [0026] The figure shows that the present invention cover the front portion of the drill 1 is a front top plate 16, it is the role of the drill sleeve 1 is positioned forward position. 前顶板为横向的U形,U形为竖直的顶板和两侧板组成,顶板位于磨削头5前方,两侧板在磨削头5两侧,两侧板与钻套1前部为可拆卸连接。 The front roof transverse U-shape, U-shape of the vertical side plates and a top plate composed of a top plate in front of the grinding head 5, a front portion of the side plates 5 on both sides of the grinding head, the drill sleeve of the side plates detachable connection. 前顶板的上方和下方均为开口, 上方开口可使磨削头5上移,下方开口可使磨削的骨颗粒漏下,不会在钻套1内堆积。 Above and below the front top plate are open, the opening can move over the grinding head 5, the opening can leave out ground bone particles downward, not accumulation of the drill sleeve 1.

[0027] 这种可拆卸结构可以采用弹簧片、插销、螺钉等多种方式,本实用新型显示的实施例是插销连接。 [0027] Such a detachable structure may be employed in various ways spring, bolt, screw or the like, embodiments of the present invention shows a pin connector. 具体结构是:两侧板的后端有两个凸出的连接片17,钻套1前端有向内的凹槽,连接片17插入凹槽中,在连接片17和钻套1侧面对应处有插孔18,插孔18内用插销连接固定。 Specific structures are: the rear end of the side plates has two projecting connecting pieces 17, the front end of the drill sleeve 1 has inwardly directed recess, the recess 17 is inserted into the connection piece, the connection piece 17 and the side surface of the drill sleeve 1 at the corresponding with an insertion hole 18, the receptacle 18 with the pin connector is fixed.

[0028] 图中显示,本实用新型在使用时,推动杠杆12,推杆4向前运动,推动推板3向前, 由于转向板2、推板3由转向轴8、转轴9连接,因此在推杆4向前推时,它们就会向上转动。 [0028] The figure shows the present invention in use, pushing the lever 12, the push rod 4 moves forward pushing forward the push plate 3, the steering plate 2, the push plate 3 are connected by a steering shaft 8, the shaft 9, so when the plunger 4 is pushed forward, they will pivot upwardly. 转向板2向上转动时,带动磨削头5 —起转动。 When the steering plate 2 rotates upward, driven grinding head 5 - from rotation. 由于磨削头连接杆11与软钻杆6连接,钻杆7的转动可以通过软钻杆6向前传动,磨削头5在向上转动过程中依然可以进行磨削,即将钻套1开口处的骨骼向上磨削出一个圆弧形。 Since the grinding head 11 and the flexible connecting rods 6 connected to the drill pipe, the drill rod 7 can be rotated by a soft rod 6 forward gear, the grinding head 5 can still be rotated upward in the grinding process, i.e. the opening of the drill sleeve 1 bones grind up a circular arc shape.

[0029] 软钻杆6在转动中向下有圆弧的弯曲,由于推杆4位于钻套1的两侧,推杆4中间空间可以让软钻杆的6转动不受影响,这也是将推杆4设计为两根的原因。 [0029] Soft rotating rod 6 is bent downwardly in an arc, since the push rod 4 positioned on both sides of the drill sleeve 1, the push rod 4 the intermediate space allows the flexible drill string 6 is rotated unaffected, which is the 4 putter design of two reasons.

[0030] 在一个方向磨削完.成后,磨削头5退回到钻套1中,旋转钻套1,即可对其它方向进行磨削,最后可以在骨骼内孔中得到所需要的空腔。 [0030] After grinding in a direction into the grinding head 5 is retracted into the drill sleeve 1, the rotary drill sleeve 1, can be carried out by grinding on the other direction, can finally give the required space in the hole in the bone cavity. 操作者可以根据需要空腔的大小更换不同的磨削头5。 The operator can replace the grinding head 5 to different cavity sizes as needed.

[0031] 本实用新型的一个实施例的部分尺寸如下: [0031] the present invention the size of a portion of embodiment is as follows:

[0032] 钻套外径为10mm,转向板的长度和宽度为8mm,软钻杆和钻杆的直径为3mm。 [0032] The drill sleeve an outer diameter of 10mm, length and width of the steering plate is 8mm, and the diameter of the drill pipe to drill soft 3mm.

Claims (6)

1. 一种可以变换方向的骨科磨削钻,其特征在于:它由钻套[1]、转向板[2]、推板[3]、 推杆[4]、磨削头[5]、软钻杆[6]、钻杆[7]、前顶板[16]组成,钻套[1]为圆筒体,转向板[2]和推板[3]为大小相同的方形板,转向板[2]在钻套[1]内腔中与钻套[1]的轴线垂直,转向板[2]的上边连接在转向轴[8]上,转向轴[8]两端固定在钻套[1]的内壁上,转向板[2]的下边与推板[3]前边通过转轴[9]相连接,推板[3]的后边通过转轴与推杆[4] 相连接,推杆[4]沿着钻套[1]的轴线,其后端与推动装置相连接,在转向板[2]的中心有连接孔,磨削头[5]在连接孔前方,与连接孔为可转动连接,磨削头[5]的后端通过连接孔与软钻杆[6]相连接,软钻杆[6]的后端与钻杆[7]相连接,钻杆[7]与钻头的卡头相连接, 前顶板[16]连接在钻套[1]的前端。 An orthopedic drill grinding direction can be changed, characterized in that: it by the drill sleeve [1], the deflecting plate [2], the push plate [3], the push rod [4], the grinding head [5], soft drill pipe [6], the drill pipe [7], the front top plate [16] the composition, drill sleeve [1] of the cylindrical body, the deflecting plate [2] and the push plate [3] of the same size square plate, deflection plate [2] in the vertical drill bushing [1] with the drill sleeve lumen [1] axis, deflecting plate [2] is connected to the upper steering shaft [8], the steering shaft [8] is fixed to both ends of the drill sleeve [ the inner wall 1], the deflecting plate [2] and the lower side of the push plate [3] is connected to the front via a shaft [9], the push plate [3] behind the push rod via a shaft [4] is connected, the push rod [4 ] along the drill sleeve [1] axis, which is connected to the rear end of the pushing means, the center of the steering board [2] has a connecting hole, grinding head [5] is rotatably connected to the front connecting hole, and the connecting hole rear end grinding head [5] are connected by a flexible rod connection holes [6], the soft rod [6] the rear end of the drill pipe [7] is connected to the drill pipe [7] and the drill bit card the head is connected to the front top plate [16] is connected to the drill sleeve [1] of the front end.
2.根据权利要求1所述的可以变换方向的骨科磨削钻,其特征在于:所述的转向板[2] 的连接孔上嵌有转动轴承[10],磨削头[5]固定在磨削头连接杆[11]上,磨削头连接杆[11]与转动轴承[10]的内环配合连接。 2. The orthopedic drill grinding direction may be changed according to claim 1, characterized in that: said steering plate fitted on the [2] is connected to the rotary bearing hole [10], grinding head [5] is fixed grinding head connecting rod [11], the grinding head connecting rod [11] and the pivot bearing [10] is connected with the inner ring.
3.根据权利要求2所述的可以变换方向的骨科磨削钻,其特征在于:所述推杆[4]为两根,两根推杆W]的前端分别连接在推板[3]后部的两侧,两根推杆W]的后端相连接。 Orthopedic drill according to claim grinding direction may be changed according to claim 2, wherein: said ram [4] of two, two pusher W] are connected to the front end of the push plate [3] is both side portions, two pusher W] is connected to the rear end.
4.根据权利要求3所述的可以变换方向的骨科磨削钻,其特征在于:所述的推动装置是杠杆[12],杠杆[12]的中部由转轴固定在钻套[1]的后部,杠杆[12]的一端与推杆[4] 的后端相连接。 After pushing the lever means is [12], the middle lever [12] is fixed to the sleeve by a drill shaft [1]: orthopedic drill according to claim grinding direction may be changed according to claim 3, characterized in that One end portion of the lever [12] and the plunger [4] is connected to the rear end.
5.根据权利要求4所述的可以变换方向的骨科磨削钻,其特征在于:所述钻套[1]的后部有后端板[13],后端板[13]与钻套[1]轴线垂直,固定连接在钻套[1]后端,后端板[13]的中心嵌有转动轴承,转动轴承的内环与钻杆[7]为配合连接。 5. The orthopedic drill grinding direction may be changed according to claim 4, characterized in that: said rear bit holder [1] The rear end plate [13], a rear end plate [13] and the drill sleeve [ 1] a vertical axis, is fixedly connected to the center drill sleeve [1] a rear end, the rear end of the plate [13] is embedded rotary bearing, the inner ring and the rotary bearing rod [7] of the mating connector.
6.根据权利要求5所述的可以变换方向的骨科磨削钻,其特征在于:所述前顶板[16] 为竖直的顶板和两侧板组成,顶板位于磨削头[5]前方,两侧板在磨削头[5]两侧,两侧板与钻套[1]前部为可拆卸连接。 6. The orthopedic drill grinding direction may be changed according to claim 5, characterized in that: said front top plate [16] of the top and sides of the vertical plates, a top plate positioned grinding head [5] the front, in the grinding head side plates [5] on both sides, both sides of the plate with the drill sleeve [1] to be removably connected to the front portion.
CN2011201460220U 2011-05-10 2011-05-10 Orthopedics grinding drill capable of changing directions CN202104982U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103169524A (en) * 2013-04-19 2013-06-26 山东冠龙医疗用品有限公司 Abrasion drill for orthopedic operation
CN104434257A (en) * 2014-12-01 2015-03-25 宋言峥 Scrapping and grinding device and operation method thereof
CN104688295A (en) * 2015-01-14 2015-06-10 雷东 Medical grinding power device with angle adjusting function
CN105030295A (en) * 2015-06-30 2015-11-11 浙江天松医疗器械股份有限公司 Bone tissue grinding tool for surgery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103169524A (en) * 2013-04-19 2013-06-26 山东冠龙医疗用品有限公司 Abrasion drill for orthopedic operation
CN104434257A (en) * 2014-12-01 2015-03-25 宋言峥 Scrapping and grinding device and operation method thereof
CN104688295A (en) * 2015-01-14 2015-06-10 雷东 Medical grinding power device with angle adjusting function
CN105030295A (en) * 2015-06-30 2015-11-11 浙江天松医疗器械股份有限公司 Bone tissue grinding tool for surgery

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