CN102119869B - Drilling locator special for collum femoris - Google Patents

Drilling locator special for collum femoris Download PDF

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Publication number
CN102119869B
CN102119869B CN 201110075814 CN201110075814A CN102119869B CN 102119869 B CN102119869 B CN 102119869B CN 201110075814 CN201110075814 CN 201110075814 CN 201110075814 A CN201110075814 A CN 201110075814A CN 102119869 B CN102119869 B CN 102119869B
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CN
China
Prior art keywords
hole
positioning
drill
provided
pin
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CN 201110075814
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Chinese (zh)
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CN102119869A (en
Inventor
于树义
孙德修
桑锡光
王景彦
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潍坊航维医疗器械有限公司
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Priority to CN 201110075814 priority Critical patent/CN102119869B/en
Publication of CN102119869A publication Critical patent/CN102119869A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17Guides or aligning means for drills, mills, pins or wires
    • A61B17/1739Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
    • A61B17/1742Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the hip
    • A61B17/175Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the hip for preparing the femur for hip prosthesis insertion

Abstract

The invention discloses a drilling locator special for collum femoris. The drilling locator comprises a base body, a drill sleeve slidably installed in a central through hole of the base body, a bent first locating pin and a second locating pin, wherein the pin point of the first locating pin is bent downward and is positioned over the axial extension line of the central through hole and the distance between the pin point of the first locating pin and the axial extension line of the central through hole is half of the anteroposterior diameter of collum femoris; and the second locating pin andthe first locating pin are in parallel arrangement or vertical arrangement, the second locating pin is longer than the first locating pin, the pin point of the second locating pin is lower than that of the first locating pin, and the distance between the pin point of the first locating pin and the second locating pin is half of the axial diameter of collum femoris. The drilling locator ensures accurate location and successful drilling at one time and avoids drilling deflection or failure.

Description

股骨颈专用钻孔定位器 Neck dedicated drill locator

技术领域 FIELD

[0001] 本发明涉及骨科医疗器械技术领域,具体地说,涉及一种股骨颈专用钻孔定位器。 [0001] The present invention relates to a technical field of orthopedic medical devices, and more particularly, to a dedicated drill neck retainer. 背景技术 Background technique

[0002] 当人体股骨的大粗隆等部位由于各种原因发生骨折时,就需要通过骨外科手术用钻头经股骨上端外侧向股骨颈钻孔,之后再进行固定。 [0002] When the body and other parts of the greater trochanter of femur fracture due to various reasons, need to drill through the bone to a surgical drilling through the lateral femoral neck upper end, then after fixation.

[0003] 如何将钻头一次性打入股骨颈是一个世界性的难题。 [0003] how to drill into the femoral neck is a one-off worldwide problem. 现有的股骨颈钻孔定位装置繁多,如瑞士“A0”生产的定位器,是在基体上加工有用于插装钻套的通孔,钻孔时,钻套的头部顶靠在大粗隆上,钻头自钻套的导向孔伸出后钻进大粗隆和股骨颈,整个钻孔过程基本凭外科医生的经验来进行,钻孔具有一定的盲目性,钻孔钻偏或钻孔失败的现象时有发生,延长了手术时间,增加了手术难度,加重了病人损伤,影响了手术质量。 Neck positioning means conventional drilling range, such as the Swiss "A0" locator production, is processed on the base for insertion of the drill sleeve through hole, drilling, drill sleeve abuts against the head of a large crude on long, since the drill guide sleeve drill hole drilling greater trochanter and femoral neck projecting, substantially the entire drilling process with the experience of the surgeon to perform, with a certain blindness drilling, drilling or boring drill bias the phenomenon occurs when there is a failure to extend the operation time, increasing the difficulty of operation, increased patient injury, affecting the quality of surgery. 发明内容 SUMMARY

[0004] 本发明所要解决的技术问题是:提供一种能准确定位、防止钻孔钻偏或钻孔失败的股骨颈专用钻孔定位器。 [0004] The present invention solves the technical problem are: to provide an accurate positioning, prevent drilling or boring drill partial failure of the dedicated drill neck retainer.

[0005] 为解决上述技术问题,本发明的技术方案是:股骨颈专用钻孔定位器,包括基体,所述基体上设有中心通孔;钻套,所述钻套滑动安装于所述中心通孔内,所述钻套上设有供钻头导向用的通孔;第一定位针,所述第一定位针呈弯曲状,所述第一定位针的针尖向下弯折,所述第一定位针的针尖位于所述中心通孔的轴线延长线的正上方,所述第一定位针的针尖与所述中心通孔的轴线延长线之间的距离为股骨颈的前后径的一半;所述第一定位针的尾端固定于所述基体的上表面;第二定位针,所述第二定位针与所述第一定位针平行设置或垂直设置,所述第二定位针长于所述第一定位针,所述第二定位针的针尖低于所述第一定位针的针尖;所述第一定位针的针尖与所述第二定位针之间的距离为股骨颈的上下径的半径尺寸。 [0005] To solve the above technical problem, the technical solution of the present invention are: neck positioning dedicated drill, comprising a substrate, provided with a central through hole on the substrate; bit holder, said bit holder slidably mounted on the center through hole, the drill sleeve is provided with holes for a drill guide; a first locating pin, said first curved needle-like positioning, positioning the first needle tip is bent downward, the first positioning a needle tip of said central axis of the through hole directly above the extension line of the axis of extension of the tip of the first positioning pin and the through hole of the distance between the center line is half the anteroposterior diameter of the femoral neck; the trailing end of the first positioning pin is fixed to the upper surface of the substrate; a second positioning pins, the second positioning pins are disposed in parallel with the first positioning pins disposed or vertically, the second positioning pin is longer than said first positioning pins, the second positioning point of the needle is positioned below the tip of the first needle; distance between the tip of the first positioning pin and the second positioning pin as the vertical diameter of the femoral neck radial dimension.

[0006] 作为优选的技术方案,所述基体相对的两个侧面分别设有垂直于所述中心通孔的滑槽;所述第二定位针的尾端设有安装部,所述安装部设有与所述滑槽形状相适配的凸起部,所述安装部上设有垂直于所述中心通孔的安装部通孔,所述安装部通孔内设有用于将所述第二定位针固定于所示基体上的紧固螺栓。 [0006] As a preferred aspect, two opposite sides of the base body are provided perpendicular to the central chute through hole; trailing end of the second positioning pin has a mounting portion, the mounting portion provided a raised portion adapted to the shape of the chute, the mounting portion is provided with a through hole perpendicular to the central through hole of the mounting portion, the mounting portion provided with a through-hole of the second positioning pins fixed to the fastening bolt on the substrate shown in FIG.

[0007] 作为优选的技术方案,所述第二定位针尾端的安装部上设有一个以上安装点,所述第二定位针的尾端安装在其中一个安装点上。 [0007] As a preferred aspect, the second positioning pin is provided with a tail portion is mounted on a mount point or more, the trailing end of the second positioning pin mounted on one of the mounting point.

[0008] 作为优选的技术方案,所述滑槽为“U”形凹槽或燕尾形凹槽。 [0008] As a preferred aspect, the chute is a "U" shaped grooves or dovetail grooves.

[0009] 作为优选的技术方案,所述定位器还包括钻套锁紧装置,所述钻套锁紧装置包括手柄,所述手柄的一端设有外螺纹,所述基体上设有与所述中心通孔相连通的内螺纹通孔,所述手柄的外螺纹端安装在所述内螺纹通孔内。 [0009] As a preferred aspect, the retainer further comprising a drill bushing locking means, said locking means comprises a drill sleeve end of the handle, the handle is provided with an external thread, the base body is provided with the upper an internally threaded hole through the center through hole communicating, externally threaded end of the handle is mounted in the internally threaded through-hole.

[0010] 由于采用了上述技术方案,本发明的有益效果是:在使用本发明的股骨颈专用钻孔定位器进行定位钻孔时,将第一定位针的针尖扎在股骨颈的前面,第二定位针的针尖扎在股骨颈的上面,调节钻套的位置,使钻套的头部顶靠在股骨上端外侧,即可进行钻孔,由于第一定位针的针尖扎在股骨颈的前面,第二定位针挡在股骨颈的上面,进行了定位,同时第二定位针还起到限位作用,当调整钻套的头部顶靠在股骨上端外侧的位置时,钻头与颈干角的方向可以不同,且钻头一定会处在股骨颈内预设定的位置,不会出现钻头钻出股骨颈之外而导致钻孔失败。 [0010] By adopting the technical solution of the present invention is that the beneficial effects: when used in the present invention, positioning drilling special drill femoral neck retainer, the first point of the needle bar is positioned in front of the neck, the first two positioning point of the needle bar above the femoral neck, adjust the position of the bit holder, the drill head bears against the outer sleeve femur, drilling can be carried out, since the first point of the needle bar is positioned in front of the femoral neck second positioning the needle above the neck of the stopper, the positioning carried out, while the second positioning pin also functions as a limiting effect, when adjusting the drill head bears against the sleeve outer side of the upper end of the femur, the drill bit and neck shaft angle the direction may be different and will be in the position of the drill bit pre-set in the femoral neck, will not cause the drill bore drilled beyond the neck failure.

[0011] 由于在基体相对的两个侧面分别设有滑槽;第二定位针通过其尾端的安装部可拆式固定连接在基体的一侧。 [0011] Since the sliding groove are provided in two opposite side of the base; and a second positioning pin connector on one side of the base body by its trailing mounting portion detachably fixed. 使用时,可根据患者的具体骨折部位,只需通过将第二定位针安装在基体左侧或右侧,即可进行左腿股骨或者右腿股骨的定位钻孔,即不论进行左腿股骨还是右腿股骨的定位钻孔手术,只需一个股骨颈专用钻孔定位器即可,使用非常方便。 In use, the fracture according to the specific site of a patient, simply by positioning a second pin mounted in the base body left or right, to the left leg of the femur, or positioning the drilling of the femur right leg, left leg that is performed regardless of the femur or positioning leg femur drilling operation, only one neck retainer can be dedicated drill, easy to use.

[0012] 由于第二定位针尾端的安装部上设有一个以上安装点,第二定位针的尾端安装在其中一个安装点上,使得第一定位针与第二定位针之间的距离可调,使一个本发明的股骨颈专用钻孔定位器具备了大、中、小型号的功能,可以适应不同股骨颈大小和不同钻钉部位的要求。 [0012] Since more than one mounting point provided on the mounting portion of the second positioning pins trailing end, the trailing end of the second positioning pin mounted on one of the mounting point, so that the distance between the first positioning pins and the second positioning pin can be tone, special drill femoral neck retainer of the present invention includes a large, medium and small types of functions, the femoral neck may be adapted to different nail sizes and different parts of the drilling requirements.

附图说明 BRIEF DESCRIPTION

[0013] 下面结合附图和实施例对本发明进一步说明。 Figures and examples further illustrate the present invention [0013] The following binding.

[0014] 图I是本发明实施例一的结构示意图; [0014] FIG. I is a schematic structural diagram of an embodiment of the present invention;

[0015] 图2是本发明在使用时,股骨上各定位点之间的位置关系示意图; [0015] FIG. 2 is in the use of the present invention, a schematic view of the positional relationship between the anchor points on the femur;

[0016] 图3是本发明在使用时,各定位点及钻头在股骨颈横截面上的位置关系示意图; [0016] FIG. 3 is the use of the present invention, each of the positioning points and the relationship between the bit position in a schematic cross-section of the femoral neck;

[0017] 图中:1_基体;11_滑槽;2-钻套;3_第一定位针;4_第二定位针;5_紧固螺栓;6-安装部;61_安装点;7-手柄;8_股骨颈;9_大粗隆;10-股骨上端外侧。 [0017] FIG: 1_ substrate; 11_ chute; 2- drill sleeve; 3_ first positioning pins; 4_ second positioning pins; 5_ fastening bolt; 6- mounting portion; 61_ mounting point; 7- handle; 8_ femoral neck; 9_ greater trochanter; 10- outer upper femur.

具体实施方式 Detailed ways

[0018] 实施例一 [0018] Example a

[0019] 如图I所示,股骨颈专用钻孔定位器,包括基体1,所述基体I上设有中心通孔;钻套2,所述钻套2滑动安装于所述中心通孔内,所述钻套2上设有供钻头钻进或退出的导向用的通孔;第一定位针3,所述第一定位针3呈弯曲状,所述第一定位针3的针尖向下弯折,所述第一定位针3的针尖位于所述中心通孔的轴线延长线的正上方,所述第一定位针3的针尖与所述中心通孔的轴线延长线之间的距离为股骨颈的前后径的一半;所述第一定位针3的尾端固定于所述基体I的上表面;第二定位针4,所述第二定位针4所在的平面与所述第一定位针3所在的平面平行,所述第二定位针4长于所述第一定位针3,所述第二定位针4的针尖低于所述第一定位针3的针尖;所述第一定位针3的针尖与所述第二定位针4之间的距离为股骨颈的上下径的半径尺寸。 [0019] shown in FIG neck retainer I dedicated drill, comprising a base body, said base body is provided with a central through hole I; drill sleeve 2, the sleeve 2 is slidably mounted through a drill hole in the center the drill guide sleeve is provided with a through hole for a drill bit or drilling with the exit 2; 3 a first positioning pins, the first pin 3 is positioned in a curved shape, said first downwardly positioned the needle tip 3 folding the first positioning the needle tip 3 is positioned directly above the extension of the axis of the central through hole, a distance between the first extension of the axis of the needle tip and positioning the central through hole 3 is half the anteroposterior diameter of the femoral neck; the trailing end of the first positioning pins 3 fixed to the upper surface of the base I; a second positioning pin 4, the plane of the needle 4 where said first location and a second positioning 3 is located parallel to the plane of the needle, the needle 4 is longer than the second positioning first positioning pins 3, 4 of the second needle tip is positioned lower than the first positioning of the needle tip 3; the first positioning pins 4 the distance between the tip of the needle 3 is positioned a second diameter neck down radius dimension.

[0020] 本实施例中,所述基体I相对的两个侧面分别设有垂直于所述中心通孔的滑槽11 ;所述第二定位针4的尾端设有安装部6,所述安装部6设有与所述滑槽11形状相适配的凸起部,所述安装部6上设有垂直于所述中心通孔的安装部通孔,所述安装部通孔内设有用于将所述第二定位针4固定于所示基体I上的紧固螺栓5。 [0020] In this embodiment, two opposing sides of the base I are respectively provided with sliding perpendicular to the central through hole 11; the trailing end of the second positioning pin 4 has a mounting portion 6, the mounting portion 6 is provided with a protrusion 11 adapted to the shape of the chute, the mounting portion provided with a through hole perpendicular to the central through hole 6 of the mounting portion, the mounting portion is provided with a through hole to the second fastening bolt 5 is positioned on the needle 4 is fixed to the base I in FIG. 由于在基体I相对的两个侧面分别设有滑槽11 ;第二定位针4通过其尾端的安装部6可拆式固定连接在基体I的一侦U,使用时,可根据患者的具体骨折部位,只需通过将第二定位针4安装在基体I的左侧或右侧,即可进行左腿股骨或者右腿股骨的定位钻孔,即不论进行左腿股骨还是右腿股骨的定位钻孔手术,只需要一个股骨颈专用钻孔定位器即可,使用非常方便。 Since the two opposite sides of the base I are respectively provided with slide 11; the second positioning pin 4 is connected to a U base I investigation by its trailing end portion 6 detachably fixed installation, use, according to the specific fracture patients site, simply by positioning a second needle 4 is mounted on the left or right side of the base I, drilling can be positioned right leg or left leg femoral femur, i.e., whether the positioning leg or the right leg of the femur the femoral drill hole surgery, only one neck retainer can be dedicated drill, easy to use.

[0021] 本实施例中,所述第二定位针4尾端的安装部6上设有一个以上的安装点61,所述第二定位针4的尾端安装在其中一个安装点61上,所述安装点61为安装孔,第二定位针4的尾端与安装孔紧配合安装。 [0021] In the present embodiment, is provided with more than one mounting point 61 on the second positioning pins 6 of the trailing mounting portion 4, the second positioning pins 4 mounted in the tail end where a mounting point 61, the said mounting point 61 for the mounting hole, the second positioning pin hole 4 of the trailing end of the mounting press fit. 通过设置多个安装点61,使得第一定位针3与第二定位针4之间的距离可调,使一个本发明的股骨颈专用钻孔定位器具备了大、中、小型号的功能,可以适应不同股骨颈大小和不同钻钉部位的要求。 By providing a plurality of mounting points 61, is positioned such that a distance between the second 3 and 4, the first adjustable positioning of the needle so that a neck retainer special drill of the present invention includes a large, medium and small types of functions, It can be adapted to different neck sizes and different parts of the staple drilling requirements.

[0022] 本实施例中,所述滑槽11为“U”形凹槽,当然,也可以选用燕尾形凹槽。 [0022] In this embodiment, the chute 11 is a "U" shaped groove, of course, you can also use dovetail groove.

[0023] 本实施例中,所述定位器还包括钻套锁紧装置,所述钻套锁紧装置包括手柄7,所述手柄7的一端设有外螺纹,所述基体I上设有与所述中心通孔相连通的内螺纹通孔,所述手柄7的外螺纹端安装在所述内螺纹通孔内。 [0023] In this embodiment, the retainer further comprising a drill bushing locking means, said locking means comprises a handle drill sleeve 7, one end of the handle 7 is provided with an external thread, is provided with the base on the I an internally threaded through hole of the central through hole communicating the handle 7 is mounted externally threaded end threaded through the inner bore.

[0024] 如图2和图3所示,在使用本发明的股骨颈专用钻孔定位器进行定位钻孔时,将第一定位针3的针尖扎在股骨颈8的前面,即A点,第二定位针4的针尖扎在股骨颈8的上面,即B点,调节钻套2的位置,使钻套2的头部顶靠在股骨上端外侧10的D点,即可进行钻孔,由于第一定位针3的针尖扎在股骨颈8的前面,第二定位针4的针尖扎在股骨颈8的上面,进行了定位,同时第二定位针4还起到限位作用,当调整钻套2的头部顶靠在股骨上端外侧10的位置时,钻头与颈干角的方向可以不同,且钻头一定会处在股骨颈8内预设定的位置,即图3所示,钻头C 一定处于虚线圆所示的区域内,不会出现钻头钻出股骨颈8之外而导致钻孔失败。 [0024] As shown in FIG. 2 and FIG. 3, when using the dedicated drill neck retainer for positioning the drilling of the present invention, the tip of the needle 3 is first positioned in front of the femoral neck 8 bar, i.e. the point A, positioning the tip of the second needle bar 4 above the femoral neck 8, the point B, the position adjustment of the drill bushing 2, the head 2 abuts against the drill bushing upper lateral femoral point D 10, drilling can be carried out, Since the first needle tip 3 is positioned in front of the bar of the femoral neck 8, the second needle tip is positioned above the neck 4 of the bar 8 performs positioning, while the second positioning pin 4 also functions as a limiting effect, when adjusted 2 the drill sleeve head abuts against the upper end 10 of the lateral femoral, neck shaft angle to the direction of the drill bit may be different, and will be in the position of the bit within the preset neck 8, i.e., FIG. 3, the drill bit within a region C shown in phantom in certain circles, it does not appear outside the drill out of the femoral neck 8 and the borehole failure cause. 本股骨颈专用钻孔定位器确保了定位的准确性,保证一次性钻孔成功。 This special drill neck locator to ensure the accuracy of positioning, drilling a one-time guarantee success.

[0025] 实施例二 [0025] Second Embodiment

[0026] 实施例二与实施例一基本相同,不同之处在于:所述第二定位针4所在的平面与所述第一定位针3所在的平面垂直。 [0026] The second embodiment is substantially the same with the first embodiment, except that: the plane where the needle 4 is positioned with a second plane perpendicular to the first positioning pins 3 are located.

[0027] 实施例三 [0027] Example three

[0028] 实施例三与实施例一基本相同,不同之处在于所述安装部6对称设置在所述基体I的两侧,且与所述基体I非可拆式固定为一体。 [0028] The third embodiment is substantially the same with the first embodiment, except that the side portions 6 arranged symmetrically on the body I of the mounting base, and the base of Formula I is fixed non-detachably integrally.

[0029] 以上所述仅是本发明最佳实施方式的举例。 [0029] The above embodiments are merely preferred example embodiment of the present invention. 应当指出,对于本领域的普通技术人员来说,在不脱离本发明精神和原理的前提下,还可以做出若干变形和改进。 It should be noted that those of ordinary skill in the art, without departing from the spirit and principles of the present invention is provided, you can make various modifications and improvements. 本发明的保护范围以权利要求的内容为准,任何基于本发明的技术启示而进行的等效变换,也在本发明的保护范围之内。 The scope of the present invention to subject the contents of the claims, any technique based on the teachings of the present invention is carried out equivalent transformation, it is within the scope of the present invention.

Claims (4)

1.股骨颈专用钻孔定位器,其特征在于:包括基体(I ),所述基体(I)上设有中心通孔; 钻套(2),所述钻套(2)滑动安装于所述中心通孔内,所述钻套(2)上设有供钻头导向用的通孔; 第一定位针(3),所述第一定位针(3)呈弯曲状,所述第一定位针(3)的针尖位于所述中心通孔的轴线延长线的正上方,所述第一定位针(3)的针尖与所述中心通孔的轴线延长线之间的距离为股骨颈的前后径的一半;所述第一定位针(3)的尾端固定于所述基体(I)的上表面; 第二定位针(4),所述第二定位针(4)与所述第一定位针(3)平行设置或垂直设置,所述第二定位针(4)长于所述第一定位针(3),所述第二定位针(4)的针尖低于所述第一定位针(3)的针尖;所述第一定位针(3)的针尖与所述第二定位针(4)之间的距离为股骨颈的上下径的半径尺寸; 所述基体(I)相对的两 1. neck dedicated drill locator comprising: a substrate (the I), the base body provided with a central through-hole (the I); drill bushing (2), said drill bushing (2) slidably mounted to the said central through hole, the drill sleeve (2) is provided with holes for a drill guide used on; a first positioning pin (3), the first positioning pin (3) is curved, said first positioning the distance between the front and back of neck extension of the axis of the tip and the central through-hole just above the needle (3) located at the tip of the central through hole of the extension line of the axis of the first positioning pin (3) diameter half; the first positioning pins (3) fixed to the rear end of the upper surface of the substrate (I); a second positioning pin (4), the second positioning pin (4) and the first positioning pins (3) arranged in parallel or vertically disposed, the second positioning pin (4) longer than the first positioning pins (3), the second positioning pin (4) is positioned lower than said first needle tip (3) a needle; the first positioning pins (3) and the distance between the tip (4) of the second needle positioned to the radial dimension of the bottom diameter of the femoral neck; the substrate (I) relative to the two 个侧面分别设有垂直于所述中心通孔的滑槽(11);所述第二定位针(4)的尾端设有安装部(6),所述安装部(6)设有与所述滑槽(11)形状相适配的凸起部,所述安装部(6)上设有垂直于所述中心通孔的安装部通孔,所述安装部通孔内设有用于将所述第二定位针(4)固定于所示基体(I)上的紧固螺栓(5)。 Sliding side surfaces are provided perpendicular to the central through hole (11); positioning said second pin (4) is provided with a trailing mounting portion (6), the mounting portion (6) is provided with the (11) adapted to the shape of said convex portion sliding the mounting portion (6) is provided with a through hole perpendicular to the mounting portion of the central through-hole in the mounting portion for the through hole is provided fastening bolt (5) on the (I) said second positioning pin (4) is fixed to the base body shown in FIG.
2.如权利要求I所述的股骨颈专用钻孔定位器,其特征在于:所述第二定位针(4)尾端的安装部(6)上设有一个以上安装点(61),所述第二定位针(4)的尾端安装在其中一个安装点(61)上。 2. The neck retainer special drill according to claim I, wherein: a is provided above the mounting point (61) on the second positioning pin (4) of the trailing mounting portion (6), the a second positioning pin (4) mounted in the tail end of one of the mounting point (61).
3.如权利要求I所述的股骨颈专用钻孔定位器,其特征在于:所述滑槽(11)为“U”形凹槽或燕尾形凹槽。 I drill a dedicated neck retainer according to claim 2, wherein: said sliding groove (11) is "U" shaped grooves or dovetail grooves.
4.如权利要求I至3任一项所述的股骨颈专用钻孔定位器,其特征在于:所述定位器还包括钻套锁紧装置,所述钻套锁紧装置包括手柄(7),所述手柄(7)的一端设有外螺纹,所述基体(I)上设有与所述中心通孔相连通的内螺纹通孔,所述手柄(7)的外螺纹端安装在所述内螺纹通孔内。 I as claimed in claim 4 neck dedicated to drill according to any one positioner 3, wherein: said retainer further comprises a bit holder locking means, said locking means comprises a handle drill sleeve (7) one end of said handle (7) is provided with an external thread, the base body is provided with an internally threaded through-hole and the center bore communicating on (the I), said handle (7) is mounted on the externally threaded end said inner threaded through hole.
CN 201110075814 2011-03-21 2011-03-21 Drilling locator special for collum femoris CN102119869B (en)

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PCT/CN2011/082920 WO2012126253A1 (en) 2011-03-21 2011-11-25 Positioning device specifically for drilling femur neck

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