WO2012041133A1 - 一种手术用铣刀 - Google Patents

一种手术用铣刀 Download PDF

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Publication number
WO2012041133A1
WO2012041133A1 PCT/CN2011/078817 CN2011078817W WO2012041133A1 WO 2012041133 A1 WO2012041133 A1 WO 2012041133A1 CN 2011078817 W CN2011078817 W CN 2011078817W WO 2012041133 A1 WO2012041133 A1 WO 2012041133A1
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WO
WIPO (PCT)
Prior art keywords
milling cutter
boss
wall
disposed
hole
Prior art date
Application number
PCT/CN2011/078817
Other languages
English (en)
French (fr)
Inventor
叶雷
周健
冯华
李飞
祝恒洋
李从晓
Original Assignee
重庆润泽医疗器械有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 重庆润泽医疗器械有限公司 filed Critical 重庆润泽医疗器械有限公司
Priority to EP11828029.6A priority Critical patent/EP2623052B1/en
Priority to US13/822,937 priority patent/US8900260B2/en
Publication of WO2012041133A1 publication Critical patent/WO2012041133A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/162—Chucks or tool parts which are to be held in a chuck
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/08—Accessories or related features not otherwise provided for
    • A61B2090/0801—Prevention of accidental cutting or pricking
    • A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17666—Radially reciprocating jaws
    • Y10T279/17692—Moving-cam actuator
    • Y10T279/17743—Reciprocating cam sleeve
    • Y10T279/17752—Ball or roller jaws

Definitions

  • the present invention relates to a surgical cutting instrument, and more particularly to a surgical milling cutter.
  • a milling cutter is required to perform some cutting work.
  • the milling cutter consists of a milling cutter bracket, a locking device and a motor in order from top to bottom.
  • the top end of the milling cutter holder has an L-shaped bracket, and a short hole is arranged on the short side of the L-shaped end, and a cylindrical head at the front of the milling cutter head protrudes into the hole. It is used to ensure the better force of the milling cutter.
  • the cylindrical head does not penetrate completely into the hole, leaving some exposure to the outside.
  • the short sides of the L-shape are all planar structures.
  • the cylinder head touches the object it will not have any effect on the object, which causes uneven cutting of the object.
  • the milling cutter is difficult to turn and is not convenient to use.
  • a surgical milling cutter comprising a milling cutter carrier, a locking device and a bottom motor connected in series, the milling cutter carrier comprising a fixing seat having a through hole, characterized in that : a finger guide of the first bracket with an L-shaped top end is disposed at an upper portion of the fixing seat, and an end of the short side of the L-shaped first bracket is provided with a downward protrusion, and the lowest point of the protrusion is low a lowest point of the cylindrical head of the milling cutter when the milling cutter is working normally; a bolt having a through hole at the center is fixed in the cavity of the finger guide; the fixing Instruction manual
  • the upper portion of the seat is provided with a first pressing piece, and the nut is connected to the bolt through a hole in the first pressing piece;
  • the locking device comprises: a boss having a through hole, and the inner wall of the small cylinder above the boss is disposed a bearing, the boss is also sleeved with a locking sleeve, the upper inner wall of the locking sleeve is provided with a protrusion, and the inner wall of the lower portion of the locking sleeve is tapered; the bottom surface of the tapered surface is disposed between the bottom surface of the boss and the upper bottom surface of the boss a spring, the second pressing piece is screwed to the outer wall of the top of the upper small cylinder of the boss and presses the protrusion; the wall of the small cylinder above the boss is provided with a tapered hole at a position corresponding to the tapered surface.
  • a steel ball is disposed in the tapered hole.
  • the bearings are two, respectively located below the outer wall and above the upper bottom surface.
  • a support body is arranged between the two bearings.
  • the inner wall of the large cylinder below the boss is provided with internal threads.
  • a bolt having a through hole at the center is fixed in the cavity of the finger guide; a pressing piece is disposed on an upper portion of the fixing seat, and the nut is connected to the bolt through a hole in the pressing piece.
  • a finger guide is disposed under the fixing seat, and a T-bolt is disposed in the cavity of the finger guide; a pressing piece is disposed on an upper portion of the fixing seat, and the nut is connected to the bolt through a hole in the pressing piece.
  • the upper portion of the finger guide is provided with a bearing.
  • a spring is also placed on the bolt.
  • the outer surfaces of the fixing seat and the finger guide are provided with anti-slip grooves.
  • the invention adopts a protrusion to block the possibility that the object is in contact with the cylindrical head, thereby avoiding the occurrence of uneven cutting of the object.
  • the L-type support can be driven by the finger guide Instruction manual
  • the rotation of the frame changes the running direction of the milling cutter to facilitate the operation during the operation.
  • Figure 2 is a schematic structural view of the milling cutter bracket of Figure 1;
  • Figure 3 is a schematic view showing the structure of the locking device of Figure 1.
  • a surgical milling cutter comprising a fixing base 1 having a through hole, a finger guide 4 of a first bracket having an L-shaped top end is disposed at an upper portion of the fixing base 1, and an end of the short side 8 of the L-shaped first bracket Provided with a downward projection 9, the lowest point of the projection 9 is lower than the lowest point of the cylindrical head 10 when the milling cutter is normally operated; thus blocking the possibility of the object contacting the cylindrical head, thereby avoiding object cutting The occurrence of unevenness.
  • the T-bolt 3 having a through hole is fixed in the cavity of the finger guide 4; the upper portion of the fixing base 1 is provided with a first pressing piece 7, and the nut 6 is connected to the bolt 3 through a hole in the first pressing piece 7.
  • the locking device comprises: a boss 2-1 having a through hole, and a bearing 2-8 is disposed on an inner wall of the small cylinder above the boss, and two bearings 2-8 are respectively located under the outer wall 2-7 and Above the upper bottom surface 2-10.
  • a support body 2-12 is disposed between the two bearings 2-8.
  • the two bearings can effectively ensure the smoothness of the transmission rod during rotation and reduce the heat generation.
  • the upper bottom surface 2-10 is also threaded with the pressing parts 2-15 for tightening the bearings 2-8 and the support body 2-12.
  • the firmness of the bearing 2-8 is not easy to fall off.
  • the boss also has a locking sleeve 2-2, and the upper inner wall of the locking sleeve 2-2 is provided with a protrusion 2-5, and the lower inner wall has a tapered surface 2-3;
  • a spring 2-9 is disposed; the second pressing piece 2-6 is screwed and pressed against the outer wall 2-7 of the top of the upper small cylinder of the boss.
  • the protrusion 2-5; the wall of the small cylinder above the boss is provided with a tapered hole 2-11 leading to the through hole of the boss, and the tapered hole 2-11 is provided with the steel ball 2-4.
  • the tapered holes 2-11 are provided with grooves 2-14 corresponding to the positions of the transfer rods 2-13 of the milling cutter.
  • An internal thread is provided on the inner wall of the large cylinder below the boss 2-1. In this embodiment, of course, the number of the tapered holes 2-11 and the steel balls 2-4 is two, respectively.
  • the upper portion of the finger guide 4 is provided with a bearing 5.
  • a spring 2 is also fitted over the bolt 3.
  • the outer surfaces of the fixed seat 1 and the finger guide 4 are provided with anti-slip grooves.
  • the bearing 5 can make the milling cutter have a closer force point to ensure the smooth running of the milling cutter, and the spring 2 ensures a certain force between the finger guide 4 and the fixing seat, preventing the finger guide 4 from rotating too flexiblely. The resulting operation error.
  • the finger guide 4 When the finger guide 4 is rotated, the bolt 3 and the nut 6 rotate together, so that the finger guide 4 can drive the L-shaped bracket to rotate, changing the running direction of the milling cutter, and facilitating the operation during the operation.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgical Instruments (AREA)
  • Milling Processes (AREA)

Abstract

Asurgicalmillingcuttercomprisesamillingcutterbracket,alockingdeviceandabottomelectricmotorconnectedsuccessively.Themillingcutterbracketcomprisesafixingseat(1)withathroughhole.Afingerguideapparatus(4)withanL-typefirstbracketatthetopendthereofisprovidedontheupperpartofthefixingseat(1).TheendoftheL-typefirstbracket'sshortedge(8)isprovidedwithadownwardprojection(9).Thelowestpointoftheprojection(9)islowerthanthatofthemillingcutter'scylindricalhead(10)whenthemillingcutterisworkingnormally.Thesurgicalmillingcutterutilizestheprojectiontopreventthepossibilityofanobjectcontactingwiththecylindricalhead,thusavoidingthephenomenonofanobjectbeingcutunevenly.Meanwhile,theL-typebracketcanbedrivenbythefingerguideapparatustorotatesoastochangetherunningdirectionofthemillingcutter,thusfacilitatingsurgicalprocedures.

Description

说明书 一种手术用铣刀
技术领域 本发明涉及一种手术切割器械， 尤其涉及一种手术用铣刀。 背景技术 在手术过程当中， 需要铣刀进行一些切割的工作。 铣刀从上至下 依次的包括铣刀托架、锁紧装置和电机等组成。铣刀托架的顶端具有 一个呈 L型的托架， L型的短边上设置有一孔， 铣刀刀头前部的圆柱 头伸入孔内。 用以保证铣刀较好的受力效果。 为了保护铣刀， 圆柱头 不会完全深入到孔中， 会留出一些露在外部。 现有技术中， L型的短 边均为平面结构， 在切割物体时， 如果圆柱头碰到物体是不会对物体 起任何作用的， 这就造成了物体切割的不均匀。， 同时这种结构在切 割的过程中， 铣刀转向的时候比较困难， 不方便使用。 发明内容 本发明的目的是提供一种圆柱头不会接触到被切割物体的， 同时 可以灵活转向的手术用铣刀。 为了实现上述目的， 采用以下技术方案： 一种手术用铣刀， 包括依次连接的铣刀托架、 锁紧设备和底部电 机， 所述铣刀托架包括具有通孔的固定座， 其特征在于： 顶端带 L型 的第一托架的手指导向器设置于固定座的上部，所述 L型的第一托架 短边的末端设置有向下的凸起，所述凸起的最低点低于铣刀正常工作 时铣刀的圆柱头的最低点； 所述手指导向器的腔体内固定有中心具有通孔的螺栓； 所述固定 说明书
座的上部设置有第一压片， 螺母穿过第一压片上的孔与螺栓连接； 所述锁紧设备包括：具有通孔的凸台，所述凸台上方小圆柱体的 内壁上设置有轴承，所述凸台还套有锁紧套，锁紧套的上部内壁上设 置有凸起，锁紧套下部内壁呈锥形面； 锥形面的底面与凸台的上底面 之间设置有弹簧，第二压片与凸台的上方小圆柱体的顶部的外壁螺紋 连接并压住凸起；凸台上方小圆柱体的壁上与锥形面对应的位置设置 有锥形孔， 所述锥形孔内设置有钢珠。
为了使得传输杆可以受力均匀，所述轴承为两个， 分别位于外壁 下方和上底面的上方。
为了保证两个轴承的牢固， 所述两个轴承之间设置有支撑体。 为了方便连接减速器，所述凸台下方大圆柱体的内壁上设置有内 螺紋。
所述手指导向器的腔体内固定有中心具有通孔的螺栓； 所述固定 座的上部设置有压片， 螺母穿过压片上的孔与螺栓连接。
所述固定座的下方设置有手指导向器， 所述手指导向器的腔体内 设置有 T型螺栓；所述固定座的上部设置有压片， 螺母穿过压片上的 孔与螺栓连接。
为了保持铣刀的平稳运转， 所述手指导向器的上部设置有轴承。 为了防止手指导向器过于灵活， 所述螺栓上还套有一弹簧。 为了防滑， 所述固定座和手指导向器的外表面均设置有防滑槽。 本发明采用凸起阻隔了物体与圆柱头接触的可能， 因此也就避免 了物体切割不均匀现象的发生。 同时，可通过手指导向器带动 L型托 说明书
架转动， 改变铣刀的运行方向， 便于手术中的操作。
附图说明
图 1为本发明实施例整体的结构示意图；
图 2为图 1中铣刀托架的结构示意图；
图 3为图 1中锁紧设备的结构示意图。
具体实施方式
下面结合附图及具体实施例对本发明做进一步的说明：
如图 1至图 3所示：
一种手术用铣刀， 包括具有通孔的固定座 1， 顶端带 L型的第一 托架的手指导向器 4设置于固定座 1的上部， L型的第一托架短边 8 的末端设置有向下的凸起 9， 所述凸起 9的最低点低于铣刀正常工作 时圆柱头 10的最低点； 这样就阻隔了物体与圆柱头接触的可能， 因 此也就避免了物体切割不均匀现象的发生。手指导向器 4的腔体内固 定有具有通孔的 T型螺栓 3;所述固定座 1的上部设置有第一压片 7， 螺母 6穿过第一压片 7上的孔与螺栓 3连接。
所述锁紧设备， 包括： 具有通孔的凸台 2-1， 凸台上方小圆柱体 的内壁上设置有轴承 2-8， 轴承 2-8为两个， 分别位于外壁 2-7下方 和上底面 2-10的上方。 两个轴承 2-8之间设置有支撑体 2-12。 两个 轴承可以有效的保证传输杆转动时的平稳， 减少发热， 上底面 2-10 上还螺紋连接有压紧件 2-15， 用以顶紧轴承 2-8和支撑体 2-12， 增 加了轴承 2-8的牢固度， 不易脱落。 凸台还套有锁紧套 2-2， 锁紧套 2-2的上部内壁上设置有凸起 2-5， 下部内壁呈锥形面 2-3; 锥形面 说明书
2-3的底面与凸台的上底面 2-10之间设置有弹簧 2-9; 第二压片 2-6 与凸台的上方小圆柱体的顶部的外壁 2-7螺紋连接并压住凸起 2-5; 凸台上方小圆柱体的壁上设置有通向凸台通孔的锥形孔 2-11， 锥形 孔 2-11 内设置有钢珠 2-4。 锥形孔 2-11对应在铣刀的传输杆 2-13 的位置上设置有凹槽 2-14。 凸台 2-1下方大圆柱体的内壁上设置有 内螺紋。 在此实施例中， 当然锥形孔 2-11和钢珠 2-4的个数分别为 两个。作为一种等同的变形， 可以分别设为三个， 这样的话， 锁紧的 效果将更好。釆用本锁紧结构， 当需要插入传输杆时， 只需将锁紧套 下压， 此时， 锥形面下移， 钢珠向外滚出。 传输杆到达指定位置后， 松开锁紧套， 由于弹簧的作用， 锁紧套上升， 锥形面抵住钢珠向内运 动， 卡住传输杆上的卡槽， 将传输杆固定。这种锁紧方式， 锁紧与松 开的操作简单、 方便， 且锁紧时比较牢固， 安全性能较好。
手指导向器 4的上部设置有轴承 5。 螺栓 3上还套有一弹簧 2。 固定座 1和手指导向器 4的外表面均设置有防滑槽。轴承 5可以使得 铣刀有一个较近的受力点，保证铣刀了平稳运行， 弹簧 2保证了手指 导向器 4与固定座之间有一定的受力，防止手指导向器 4转动过于灵 活而造成的操作失误。
当转动手指导向器 4时， 螺栓 3和螺母 6随之共同转动， 这样， 手指导向器 4就可以带动 L型托架转动， 改变铣刀的运行方向， 便于 手术中的操作。
以上所述， 仅是本发明的实施例， 并非对本发明的任何形式上 的限制， 任何熟悉本专业的技术人员， 在不脱离本发明技术方案 说明书 的范围内， 当可利用上述揭示的技术内容做出些许更改或修饰为 等同变化的等效实施例， 但凡是未脱离本发明技术方案内容， 依 据本发明技术实质对以上实施例所作的任何简单修改、 等同变化 与修饰， 均仍属于本发明技术方案保护的范围。

Claims

权利要求书
1、 一种手术用铣刀， 包括依次连接的铣刀托架、 锁紧设备和底部电机， 所 述铣刀托架包括具有通孔的固定座（1 )， 其特征在于： 顶端带 L型的第一托架的 手指导向器 （4) 设置于固定座 （1 ) 的上部， 所述 L型的第一托架短边 （8) 的 末端设置有向下的凸起 （9)， 所述凸起 （9) 的最低点低于铣刀正常工作时铣刀 的圆柱头 （10) 的最低点；
所述手指导向器 （4) 的腔体内固定有中心具有通孔的螺栓 （3); 所述固定 座 （1 ) 的上部设置有第一压片 （7)， 螺母 （6) 穿过第一压片 （7) 上的孔与螺 栓 ( 3) 连接；
所述锁紧设备包括： 具有通孔的凸台 （2-1 )， 所述凸台上方小圆柱体的内 壁上设置有轴承 （2-8)， 所述凸台还套有锁紧套 （2-2)， 锁紧套 （2-2) 的上部 内壁上设置有凸起（2-5)，锁紧套（2-2)下部内壁呈锥形面（2-3);锥形面（2-3) 的底面与凸台的上底面 （2-10) 之间设置有弹簧 （2-9); 第二压片 （2-6) 与凸 台的上方小圆柱体的顶部的外壁 （2-7) 螺纹连接并压住锁紧套的上部内壁上设 置的所述凸起 （2-5); 凸台上方小圆柱体的壁上与锥形面 （2-3 ) 对应的位置设 置有锥形孔 （2-11 )， 所述锥形孔 （2-11 ) 内设置有钢珠 （2-4)。
2、 如权利要求 1所述的手术用铣刀， 其特征在于： 所述轴承 （2-8) 为两 个， 分别位于凸台的上方小圆柱体的顶部的外壁 （2-7 ) 下方和凸台的上底面
( 2-10) 的上方。
3、 如权利要求 2所述的手术用铣刀， 其特征在于： 所述两个轴承 （2-8) 之间设置有支撑体 （2-12)。
4、如权利要求 1至 3任一所述的手术用铣刀，其特征在于：所述凸台（2-1 ) 下方大圆柱体的内壁上设置有内螺纹。
5、 如权利要求 4所述的手术用铣刀， 其特征在于： 所述手指导向器（4) 的 上部设置有轴承 （5)。
6、 如权利要求 5所述的手术用铣刀， 其特征在于： 所述螺栓（3)上还套有 一弹簧 （2)。
7、 如权利要求要求 6所述的手术用铣刀， 其特征在于： 所述固定座（1 )和 手指导向器 （4) 的外表面均设置有防滑槽。
PCT/CN2011/078817 2010-09-30 2011-08-24 一种手术用铣刀 WO2012041133A1 (zh)

Priority Applications (2)

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EP11828029.6A EP2623052B1 (en) 2010-09-30 2011-08-24 Surgical milling cutter
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CN101940490B (zh) * 2010-09-30 2012-05-23 重庆润泽医疗器械有限公司 一种手术用铣刀托架
CN101926672B (zh) * 2010-09-30 2011-11-16 重庆润泽医疗器械有限公司 一种手术用铣刀
CN102059378B (zh) * 2010-11-26 2013-12-25 重庆润泽医药有限公司 一种手术铣刀
CN103948411A (zh) * 2014-05-14 2014-07-30 刘志国 一种颅骨铣刀
CN113679496B (zh) * 2021-09-07 2022-07-01 四川大学 一种用于医用口腔防脱防误吞的螺丝刀

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EP2623052A1 (en) 2013-08-07
US20130184731A1 (en) 2013-07-18
US8900260B2 (en) 2014-12-02
CN101926672A (zh) 2010-12-29
EP2623052A4 (en) 2014-08-27
EP2623052B1 (en) 2020-01-22

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