WO2017114059A1 - 护鞘摆锯片 - Google Patents

护鞘摆锯片 Download PDF

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Publication number
WO2017114059A1
WO2017114059A1 PCT/CN2016/107701 CN2016107701W WO2017114059A1 WO 2017114059 A1 WO2017114059 A1 WO 2017114059A1 CN 2016107701 W CN2016107701 W CN 2016107701W WO 2017114059 A1 WO2017114059 A1 WO 2017114059A1
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WO
WIPO (PCT)
Prior art keywords
sheath
saw blade
driving
blade body
hole
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PCT/CN2016/107701
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English (en)
French (fr)
Inventor
郭毅军
柳长风
吴治中
王群英
张金彬
Original Assignee
重庆西山科技股份有限公司
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Application filed by 重庆西山科技股份有限公司 filed Critical 重庆西山科技股份有限公司
Publication of WO2017114059A1 publication Critical patent/WO2017114059A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/14—Surgical saws ; Accessories therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor

Definitions

  • the invention relates to a medical device, in particular to a sheath sheath saw blade.
  • the oscillating saw device is a common tool for sawing bones, and the saw blade is driven to swing by the orthopedic saw driving device.
  • the sheath saw blade is usually not sheathed, and the vibration is large when the bone tissue is removed.
  • the utility model is disposed at the front end of the sheath, and two driving rods which are staggered and reciprocated in the longitudinal direction are arranged in the sheath.
  • the front end of the driving rod is drivingly connected with the rear end of the saw blade, and the rear end of the driving rod is connected with the movement of the head.
  • the head drive driving rod reciprocates in the longitudinal direction, and the driving rod drives the saw blade disposed in the sheath to swing, thereby achieving low transmission efficiency, complicated installation structure, more components, and poor safety due to driving by the driving rod.
  • the stability of the oscillating saw is poor.
  • the object of the present invention is to overcome the defects in the prior art, and the present invention provides a sheath saw blade; the structure of the oscillating saw can be simplified, the components are few, the assembly is convenient, and the transmission efficiency is high, the saw
  • the sheet swing has high stability and long service life.
  • the invention provides a sheath sheath saw blade which is drivingly connected with a machine head.
  • the sheath pendulum saw blade comprises a saw blade body, and the saw blade body is provided with a sheath outside the body, and the front end of the saw blade body is integrally formed and provided with a sheath
  • the serration of the sheath body, the tail end of the saw blade body is integrally formed with a driving portion for drivingly connecting with the head and driving the saw blade body to swing to drive the sawtooth to form a saw.
  • the saw blade body is provided with a thinned section in the middle of the longitudinal direction, the thinned section making the intermediate thickness of the saw blade body smaller than the thickness of both ends of the saw blade body.
  • the saw blade body is provided with a plurality of auxiliary holes in the longitudinal direction.
  • the auxiliary hole includes a plurality of small circular holes distributed in a matrix on the saw blade body.
  • auxiliary hole further includes a plurality of rectangular holes disposed at the front end of the saw blade body.
  • the inner wall of the sheath is fixedly disposed with a plurality of supporting bosses in the longitudinal direction, and the auxiliary holes include a plurality of first avoiding holes for supporting the bosses to pass through and avoiding the supporting bosses.
  • the first escape hole is a strip hole disposed in a lateral direction.
  • the driving portion is provided with a driving hole for driving connection with the driving member of the head and for driving the saw blade body to swing, and the tail end of the sheath is provided with a driving member for the head passing through and avoiding the driving member.
  • the second escape hole is provided.
  • the driving member is a driving column, and the driving column passes through the second escape hole and the driving hole and is drivingly engaged with the driving hole.
  • the driving column is one, the driving column is disposed in an elliptical shape or a rectangular shape, and the driving hole is shaped to be an elliptical hole or a rectangular hole in a sectional shape of the driving column.
  • the driving portion is a circular rotating portion, and the driving holes are plural and disposed along a circular arc direction of the circular rotating portion.
  • the tail end of the sheath and the tail end of the circular rotating portion are respectively provided with guiding pressing grooves for engaging with the locking members on the handpiece; the guiding pressing grooves are all disposed in the longitudinal direction.
  • the inside of the tail end of the sheath is symmetrically disposed with two support skeletons along a longitudinal central axis, and opposite sides of the two support skeletons are provided with arcuate grooves for cooperating with the circular rotating portion;
  • the tail of the sheath The end is provided with a limiting hole, and the supporting bobbin is provided with a through hole for engaging with the limiting hole.
  • the support frame extends in a longitudinal direction of the sheath to a front end of the sheath.
  • the saw blade body is gradually reduced in width from the back to the front, and the lateral sides of the front end of the saw blade body are provided with lugs, and the lateral sides of the sheath are respectively provided with the lugs extending laterally. Chip drain.
  • the front end wall of the lug is configured to facilitate driving a streamlined structure in which bone chips are discharged from the discharge port.
  • a first escape hole disposed in the lateral direction is disposed between the two lugs.
  • a plurality of chip evacuation holes arranged in the longitudinal direction are disposed on both sides of the front and lower sides of the front end of the sheath.
  • chip evacuation hole and the chip discharge port are disposed at the same position in the longitudinal direction on the lateral sides of the front end of the sheath.
  • the invention has the beneficial effects that the sheath saw blade disclosed by the invention directly drives the driving portion integrally formed on the tail end of the saw blade body through the machine head, avoids driving by the transmission rod, shortens the transmission chain, and has a simple structure and zero.
  • the utility model has fewer components, is convenient for assembly, and ensures high driving efficiency of driving the saw blade body to ensure higher efficiency in grinding bone tissue during operation, and the sawtooth and the driving part are integrally formed on the saw blade body, so that the structural strength is high, and the structure is high. Long service life.
  • Figure 1 is a schematic view of the structure of the present invention
  • FIG. 2 is a schematic structural view of the saw blade mounted on the machine head according to the present invention.
  • Fig. 3 is a structural schematic view showing the sheath of the present invention partially broken away.
  • FIG. 1 is a schematic structural view of the present invention
  • FIG. 2 is a schematic structural view of the saw blade after being mounted on the machine head according to the present invention
  • FIG. 3 is a structural schematic view showing the protective sheath partially broken away according to the present invention.
  • the present invention provides A sheath pendulum saw blade is drivingly coupled to the handpiece 1.
  • the sheath pendulum saw blade includes a blade body 2, and the blade body 2 is externally provided with a sheath 3, and the front end of the blade body 2 is integrally formed with The serration 24 of the sheath 3 is inserted, and the tail end of the saw blade body 2 is integrally formed with a driving portion 26 for driving connection with the head 1 and driving the saw blade body under the driving of the head 1 2 swinging to drive the sawtooth 24 to swing to form a saw;
  • the sheath 3 is a casing and is sleeved on the saw blade body 2, and the saw blade body 2 can be swung in the sheath 3 under the driving of the driving portion 26, through the head 1 Directly driving the driving portion 26 integrally formed at the end of the saw blade body 2, avoiding the use of the transmission rod drive, shortening the transmission chain, simple structure, few components, easy assembly, and ensuring high efficiency of driving the saw blade body 2
  • the serrations 24 and The driving portion 26 is integrally formed
  • the saw blade body 2 is provided with a thinned section 21 in the middle of the longitudinal direction, the thinned section 21 makes the intermediate thickness of the saw blade body 2 smaller than the thickness of the two ends; the thinned section 21 is composed of the saw blade body 2
  • the upper and lower surfaces along the longitudinal middle portion are concavely formed in the thickness direction such that the intermediate thickness of the saw blade body 2 is smaller than the thickness of both ends, and the setting of the thinned section 21 does not affect
  • the thinning section 21 is advantageous for reducing the frictional area between the saw blade body 2 and the sheath 3, greatly reducing the heat generation of the saw blade body 2, and at the same time, when the saw blade body 2 When the micro-bending occurs simultaneously with the sheath 3, the rigidity of the middle portion of the saw blade body 2 is low due to the setting of the thinned portion 21, and the positive pressure against the
  • the saw blade body 2 is provided with a plurality of auxiliary holes in the longitudinal direction; as shown, the auxiliary holes may include a plurality of small circular holes 2c distributed in a matrix on the saw blade body 2 and disposed on the saw blade
  • the rectangular hole 2a at the front end of the body 2 of course, the shape of the auxiliary hole may be other shapes, and the distribution of the auxiliary hole may be conformed to the size of the saw blade body 2; the weight of the saw blade body 2 may be reduced by the arrangement of the auxiliary hole It is ensured that the head 1 drives the saw blade body 2 more efficiently, and the auxiliary hole can reduce the contact surface of the saw blade body 2 and the sheath 3, and further reduce the heat generation when the saw blade body 2 and the sheath 3 are rubbed.
  • the auxiliary hole of the thin section 21 is advantageous for further reducing the rigidity of the saw blade body 2, and ensuring that the positive pressure of the inner wall of the sheath 3 is small when the saw blade body 2 and the sheath 3 are bent, and friction heat is reduced.
  • the inner wall of the sheath 3 is fixedly disposed with a plurality of supporting bosses 31 in the longitudinal direction, and the auxiliary holes further include a plurality of first avoiding holes for supporting the bosses 31 to pass through and avoiding the supporting bosses 31. 22; as shown, the first relief hole 22 may be a strip-shaped hole disposed in a lateral direction; the support boss 31 is disposed in the lateral middle of the sheath 3 to ensure that the saw blade body 2 has the largest swinging stroke, and the support boss is supported.
  • the supporting boss 31 functions to support the upper and lower shells of the sheath 3, It is avoided that the sheath 3 presses the internal saw blade body 2 to ensure that the saw blade body 2 is not locked, and the operation is smoothly performed.
  • the driving portion 26 is provided with a driving hole 26a for driving connection with the driving member 27a of the handpiece 1 and for driving the saw blade body 2 to swing.
  • the tail end of the sheath 3 is provided with the head 1 for the handpiece 1.
  • the driving member 27a passes through and avoids the second avoiding hole 27 of the driving member 27a; the driving member 27a may be a driving column, and the driving column passes through the second avoiding hole 27 and the driving hole 26a and is drivingly engaged with the driving hole 26a,
  • the driving column may be one or more.
  • the driving column when the driving column is one, it is necessary to ensure that the driving column and the driving hole 26a cannot rotate relative to each other, for example, by setting the cross section of the driving column to an ellipse or a rectangle, etc., the driving hole 26a is conformed.
  • the cross-sectional shape of the driving column is set to an elliptical hole or a rectangular hole, etc.; the driving column reciprocally oscillates along the arc direction of the saw blade body 2, and drives the driving hole 26a to reciprocately rotate, thereby causing the sawtooth 24 to reciprocate and swing through the hole-shaped driving structure.
  • the blade body 2 is ensured to be easy to install and the drive is stable.
  • the driving portion 26 is a circular rotating portion, the driving holes 26a are plural, and are disposed along a circular arc direction of the circular rotating portion; the driving portion 26 has a circular structure to facilitate the driving portion 26 to rotate.
  • the structure is compact, and the arc-shaped driving holes 26a facilitate the uniform force of the arc-shaped rotating portion, and ensure the driving force when the saw blade body 2 swings is stable.
  • the sheath 3 and the tail end of the circular rotating portion are respectively provided with a guiding pressing groove for engaging with the locking member on the head 1 (including the guiding pressing provided at the circular rotating portion) a groove 26b and a guiding pressing groove 3b) disposed at the tail end of the sheath 3;
  • the guiding pressing grooves are all disposed in the longitudinal direction; the setting of the guiding pressing groove facilitates the installation of the sheath 3 and the saw blade body 2, thereby improving the operation time Installation efficiency and shortened operation time.
  • the inside of the tail end of the sheath 3 is symmetrically disposed with two supporting skeletons (including a supporting skeleton 29a and a supporting skeleton 29b) along a longitudinal central axis, and opposite sides of the two supporting skeletons are provided with a circular rotating portion.
  • the support frame ensures that the end of the sheath 3 is locked by the head 1
  • the workpiece is not deformed when pressed, and the pressing drive portion 26 is prevented from affecting the swinging of the saw blade body 2 after the end of the sheath 3 is deformed;
  • the end of the sheath 3 is provided with a limiting hole 29, and the supporting frame is provided with
  • the limiting hole 29 cooperates with the through hole 29c;
  • the limiting hole 29 can be two, and is disposed symmetrically along the longitudinal center line.
  • the limiting hole 29 can effectively prevent the sheath 3 from being driven when the saw blade body 2 is swung. Rotation to ensure the stability of the sheath 3 during surgery.
  • the support frame can also extend in the longitudinal direction of the sheath 3 to the front end of the sheath 3, and together with the support boss 31, functions to support the upper and lower shells of the sheath 3, further preventing the sheath 3 from being pressed inside the sheath body 2 , It is ensured that the saw blade body 2 is not locked, and the operation is ensured smoothly.
  • the saw blade body 2 is gradually reduced in width from the back to the front to ensure that when the width of the sheath 3 is constant, the front end of the saw blade body 2 has a larger swing width, and the front end of the saw blade body 2 is laterally laterally Provided with lugs (including lugs 35a and lugs 35b), the lateral sides of the sheath 3 are provided with a discharge port 32 for laterally extending through the lugs; the lugs can effectively block the front end of the sheath 3
  • the inner bones enter the rear end of the sheath 3 to prevent the saw blade body 2 from being locked, and the front end wall of the lug can be arranged to facilitate the flow line shape for driving the bone chips to be discharged from the discharge port 32, or can be set by Two lugs symmetrical in the lateral direction, and a first escape hole 22 for avoiding the support boss 31 at the front end of the saw blade body 2 is disposed between the two lugs, which can overcome the reduction of the front end width of the saw blade
  • a plurality of chip evacuation holes 33 arranged in the longitudinal direction are disposed on the lateral sides of the front and lower sides of the front end of the sheath 3; the chip removal holes 33 and the chip discharge ports 32 may be disposed at the same position in the longitudinal direction.
  • the chip removal hole 33 and the chip discharge port 32 cooperate with each other to effectively improve the efficiency of chip removal inside the front end of the sheath 3.

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Abstract

一种护鞘摆锯片，与机头(1)驱动连接，护鞘摆锯片包括锯片本体(2)，所述锯片本体(2)外设有护鞘(3)，锯片本体(2)的前端一体成型设置有穿出护鞘(3)的锯齿(24)，锯片本体(2)的尾端一体成型设置有驱动部(26)，所述驱动部(26)用于与机头(1)驱动连接并带动锯片本体(2)摆动从而带动锯齿(24)摆动形成锯削；通过机头(1)直接驱动一体成型于锯片本体(2)尾端的驱动部(26)，避免利用传动杆驱动，缩短了传动链，结构简单，零部件少，便于组装，并且保证驱动锯片本体(2)摆动具有较高的传动效率，保证手术时磨削骨组织效率更高，并且锯齿(24)和驱动部(26)一体成型于锯片本体(2)，使得结构强度高，具有较长的使用寿命。

Description

护鞘摆锯片 技术领域
本发明涉及一种医疗器械，具体涉及一种护鞘摆锯片。
背景技术
在骨科外科手术中，摆锯装置为锯骨的常用工具，通过骨科锯驱动设备驱动锯片摆动，而现有技术中，通常为无护鞘骨锯片，在切除骨组织时，造成振动大、噪音大和操作性差的缺点，并且容易和模架发生摩擦，使得锯片发热和产生磨屑，影响手术过程与术后创伤；为了克服上述缺点，出现了带护鞘的摆锯，将锯片设置于护鞘的前端，且在护鞘内设置两个可沿纵向交错往复运动的驱动杆，驱动杆的前端与锯片的后端驱动连接，驱动杆的后端与机头传动连接，通过机头驱动驱动杆沿纵向往复运动，驱动杆带动设置于护鞘内的锯片摆动实现切削，由于通过驱动杆驱动使得传动效率较低，并且安装结构复杂，零部件较多，安全性较差，摆锯的稳定性较差。
发明内容
有鉴于此，本发明的目的是克服现有技术中的缺陷，本发明提供了一种护鞘摆锯片；能够简化摆锯的结构，零部件较少，装配方便，并且传动效率高，锯片摆动的稳定性高，使用寿命长。
本发明提供了一种护鞘摆锯片，与机头驱动连接，护鞘摆锯片包括锯片本体，所述锯片本体外设有护鞘，锯片本体的前端一体成型设置有穿出护鞘的锯齿，锯片本体的尾端一体成型设置有驱动部，所述驱动部用于与机头驱动连接并带动锯片本体摆动从而带动锯齿摆动形成锯削。
进一步，所述锯片本体沿纵向的中间设置有减薄段，所述减薄段使锯片本体的中间厚度小于锯片本体的两端厚度。
进一步，所述锯片本体沿纵向设置多个辅助孔。
进一步，所述辅助孔包括呈矩阵分布于所述锯片本体的多个小圆孔。
进一步，所述辅助孔还包括设置于所述锯片本体前端的多个矩形孔。
进一步，所述护鞘的内壁沿纵向固定设置有多个支撑凸台，所述辅助孔包括用于支撑凸台穿过并避让支撑凸台的多个第一避让孔。
进一步，所述第一避让孔为沿横向设置的条形孔。
进一步，所述驱动部设置有用于与机头的驱动件驱动连接并用于驱动锯片本体摆动的驱动孔，所述护鞘的尾端设置有用于机头的驱动件穿过并避让驱动件的第二避让孔。
进一步，所述驱动件为驱动柱，所述驱动柱穿过所述第二避让孔和所述驱动孔并与所述驱动孔驱动配合。
进一步，所述驱动柱为一个，所述驱动柱的断面设置成椭圆形或矩形，所述驱动孔适形于所述驱动柱的断面形状设置为椭圆孔或矩形孔。
进一步，所述驱动部为圆形转动部，所述驱动孔为多个且沿圆形转动部的转动圆弧方向设置。
进一步，所述护鞘的尾端和圆形转动部的尾端均贯穿设置有用于与机头上的锁紧件配合的导向压紧槽；所述导向压紧槽均沿纵向设置。
进一步，所述护鞘的尾端内部沿纵向中心轴线对称设置有两个支撑骨架，两个支撑骨架的相对侧均设置有用于与圆形转动部配合的弧形槽；所述护鞘的尾端设置有限位孔，所述支撑骨架上设置有用于与所述限位孔配合的过孔。
进一步，所述支撑骨架沿所述护鞘的纵向方向延伸至所述护鞘的前端。
进一步，所述锯片本体从后向前宽度逐渐减小，锯片本体的前端的横向两侧均设置有凸耳，所述护鞘的横向两侧均开设有可供凸耳横向穿出的排屑口。
进一步，所述凸耳的前端壁设置为便于驱动骨屑从所述排屑口排出的流线形结构。
进一步，两个所述凸耳之间设有沿横向设置的第一避让孔。
进一步，所述护鞘的前端上下面的横向两侧均设置有沿纵向排列的多个排屑孔。
进一步，所述排屑孔与所述排屑口于所述护鞘的前端的横向两侧沿纵向设置于相同位置。
本发明的有益效果是：本发明公开的一种护鞘摆锯片，通过机头直接驱动一体成型于锯片本体尾端的驱动部，避免利用传动杆驱动，缩短了传动链，结构简单，零部件少，便于组装，并且保证驱动锯片本体摆动具有较高的传动效率，保证手术时磨削骨组织效率更高，并且锯齿和驱动部一体成型于锯片本体，使得结构强度高，具有较长的使用寿命。
附图说明
下面结合附图对本发明的实施例作进一步描述：
图1为本发明的结构示意图；
图2为本发明中锯片安装于机头后的结构示意图；
图3为本发明中护鞘局部剖开后的结构示意图。
具体实施方式
图1为本发明的结构示意图，图2为本发明中锯片安装于机头后的结构示意图，图3为本发明中护鞘局部剖开后的结构示意图，如图所示，本发明提供了一种护鞘摆锯片，与机头1驱动连接，护鞘摆锯片包括锯片本体2，所述锯片本体2外设有护鞘3，锯片本体2的前端一体成型设置有穿出护鞘3的锯齿24，锯片本体2的尾端一体成型设置有驱动部26，所述驱动部26用于与机头1驱动连接，在机头1的驱动下并带动锯片本体2摆动从而带动锯齿24摆动形成锯削；所述护鞘3为壳体并外套于锯片本体2，锯片本体2在驱动部26的驱动下可在护鞘3内摆动，通过机头1直接驱动一体成型于锯片本体2尾端的驱动部26，避免利用传动杆驱动，缩短了传动链，结构简单，零部件少，便于组装，并且保证驱动锯片本体2摆动具有较高的传动效率，保证手术时磨削骨组织的效率更高，且锯齿24和驱动部26一体成型于锯片本体2，使得结构强度高，具有较长的使用寿命。
本实施例中，所述锯片本体2沿纵向的中间设置有减薄段21，所述减薄段21使锯片本体2的中间厚度小于两端厚度；减薄段21由锯片本体2沿纵向中部的上、下表面(上下方向为锯片本体2的厚度方向)沿厚度方向内凹形成，使得锯片本体2的中间厚度小于两端厚度，并且减薄段21的设置并不影响锯片本体2的横向摆动时的摆动力矩，减薄段21利于减小锯片本体2与护鞘3之间发生摩擦面积，大大降低了锯片本体2的发热量，同时，当锯片本体2与护鞘3同时发生微小弯曲时，由于减薄段21的设置使得锯片本体2中间部刚度低，有效减小由于锯片本体2恢复形变而产生的对接触面的正压力，能够有效减小摩擦力，进一步降低发热量。
本实施例中，所述锯片本体2沿纵向设置多个辅助孔；如图所示，所述辅助孔可包括呈矩阵分布于锯片本体2的多个小圆孔2c和设置于锯片本体2前端的矩形孔2a，当然，辅助孔的形状可以为其他形状，且辅助孔的分布可根据锯片本体2的尺寸适形调整；通过辅助孔的设置可减小锯片本体2的重量，保证机头1驱动锯片本体2效率更高，同时辅助孔能够减小锯片本体2与护鞘3的接触面，进一步降低锯片本体2与护鞘3摩擦时的发热量，位于减薄段21的辅助孔利于进一步降低锯片本体2的刚性，保证锯片本体2与护鞘3弯曲时护鞘3内壁的正压力较小，减少摩擦发热。
本实施例中，所述护鞘3内壁沿纵向固定设置有多个支撑凸台31，所述辅助孔还包括用于支撑凸台31穿过并避让支撑凸台31的多个第一避让孔22；如图所示，所述第一避让孔22可为沿横向设置的条形孔；将支撑凸台31设置于护鞘3横向中间，保证锯片本体2摆动行程最大，通过支撑凸台31，还可保证护鞘3中间容纳腔的空间高度不会较小，当护鞘3在受力弯曲或外力挤压时，支撑凸台31起到支撑护鞘3上下壳体的作用，能避免护鞘3挤压内部的锯片本体2，保证锯片本体2不被卡止，保证手术顺利进行。
本实施例中，所述驱动部26设置有用于与机头1的驱动件27a驱动连接并用于驱动锯片本体2摆动的驱动孔26a，所述护鞘3尾端设置有用于机头1的驱动件27a穿过并避让驱动件27a的第二避让孔27；所述驱动件27a可为驱动柱，驱动柱穿过第二避让孔27和驱动孔26a并与驱动孔26a驱动配合，所述驱动柱可为一个或多个，当然，当驱动柱为一个时，需保证驱动柱与驱动孔26a不能相对转动，比如通过将驱动柱的断面设置成椭圆形或矩形等，驱动孔26a适形于驱动柱的断面形状设置为椭圆孔或矩形孔等；通过驱动柱沿锯片本体2摆动的弧形方向往复摆动，带动驱动孔26a往复转动，进而使锯齿24往复摆动，通过孔形驱动结构，保证锯片本体2安装方便，驱动稳定。
本实施例中，所述驱动部26为圆形转动部，所述驱动孔26a为多个，且沿圆形转动部的转动圆弧方向设置；驱动部26为圆形结构利于驱动部26转动时结构紧凑，并且弧形排列的驱动孔26a利于弧形转动部受力均匀，保证锯片本体2摆动时的驱动力稳定。
本实施例中，所述护鞘3和圆形转动部的尾端均贯穿设置有用于与机头1上的锁紧件配合的导向压紧槽(包括设置于圆形转动部的导向压紧槽26b和设置于护鞘3尾端的导向压紧槽3b)；所述导向压紧槽均沿纵向设置；导向压紧槽的设置方便护鞘3与锯片本体2的安装，提高手术时的安装效率，缩短手术时间。
本实施例中，所述护鞘3尾端内部沿纵向中心轴线对称设置有两个支撑骨架(包括支撑骨架29a和支撑骨架29b)，两个支撑骨架相对侧均设置有用于与圆形转动部配合的弧形槽(弧形槽包括设置于支撑骨架29a的弧形槽28a和设置于支撑骨架29b的弧形槽28b)；支撑骨架保证护鞘3尾端在受到机头1上的锁紧件压紧时不会变形，避免护鞘3尾端变形后挤压驱动部26影响锯片本体2摆动；所述护鞘3尾端设置有限位孔29，所述支撑骨架上设置有用于与所述限位孔29配合的过孔29c；限位孔29可为两个，且沿纵向中心线横向对称设置，限位孔29能够有效防止在驱动锯片本体2摆动时护鞘3随之转动，保证手术时护鞘3的稳定性。此外，支撑骨架还可沿护鞘3纵向方向延伸至护鞘3前端，与支撑凸台31共同起到支撑护鞘3上下壳体的作用，进一步避免护鞘3挤压内部的锯片本体2， 保证锯片本体2不被卡止，保证手术顺利进行。
本实施例中，所述锯片本体2从后向前宽度逐渐减小，保证在护鞘3宽度一定时，锯片本体2前端具有更大的摆幅，锯片本体2的前端横向两侧设置有凸耳(包括凸耳35a和凸耳35b)，所述护鞘3的横向两侧开设有可供凸耳横向穿出的排屑口32；所述凸耳能够有效阻碍护鞘3前端内的骨屑进入护鞘3后端，避免锯片本体2卡止，同时可将所述凸耳的前端壁设置为便于驱动骨屑从排屑口32排出的流线形，也可以通过设置两个沿横向对称的凸耳，并把位于锯片本体2前端的用于避让支撑凸台31的第一避让孔22设置于两个凸耳之间，能够克服由于锯片本体2前端宽度减小使得位于前端的第一避让孔22沿横向宽度过小的问题，同时有效保证锯片本体2前端的结构强度较大。
本实施例中，所述护鞘3前端上下面的横向两侧均设置有沿纵向排列的多个排屑孔33；所述排屑孔33与排屑口32沿纵向可设置于相同位置，通过排屑孔33和排屑口32相互配合，有效提高对护鞘3前端内部排屑的效率。
最后说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的宗旨和范围，其均应涵盖在本发明的权利要求范围当中。

Claims (19)

  1. 一种护鞘摆锯片，与机头驱动连接，其中，所述护鞘摆锯片包括锯片本体，所述锯片本体外设有护鞘，所述锯片本体的前端一体成型设置有穿出所述护鞘的锯齿，所述锯片本体的尾端一体成型设置有驱动部，所述驱动部用于与所述机头驱动连接并带动所述锯片本体摆动从而带动所述锯齿摆动形成锯削。
  2. 根据权利要求1所述的护鞘摆锯片，其中，所述锯片本体沿纵向的中间设置有减薄段，所述减薄段使所述锯片本体的中间厚度小于所述锯片本体的两端厚度。
  3. 根据权利要求2所述的护鞘摆锯片，其中，所述锯片本体沿纵向设置多个辅助孔。
  4. 根据权利要求3所述的护鞘摆锯片，其中，所述辅助孔包括呈矩阵分布于所述锯片本体的多个小圆孔。
  5. 根据权利要求3或4所述的护鞘摆锯片，其中，所述辅助孔还包括设置于所述锯片本体前端的多个矩形孔。
  6. 根据权利要求3所述的护鞘摆锯片，其中，所述护鞘的内壁沿纵向固定设置有多个支撑凸台，所述辅助孔包括用于所述支撑凸台穿过并避让所述支撑凸台的多个第一避让孔。
  7. 根据权利要求6所述的护鞘摆锯片，其中，所述第一避让孔为沿横向设置的条形孔。
  8. 根据权利要求1所述的护鞘摆锯片，其中，所述驱动部设置有用于与所述机头的驱动件驱动连接并用于驱动所述锯片本体摆动的驱动孔，所述护鞘的尾端设置有用于所述机头的驱动件穿过并避让所述驱动件的第二避让孔。
  9. 根据权利要求8所述的护鞘摆锯片，其中，所述驱动件为驱动柱，所述驱动柱穿过所述第二避让孔和所述驱动孔并与所述驱动孔驱动配合。
  10. 根据权利要求9所述的护鞘摆锯片，其中，所述驱动柱为一个，所述驱动柱的断面设置成椭圆形或矩形，所述驱动孔适形于所述驱动柱的断面形状设置为椭圆孔或矩形孔。
  11. 根据权利要求8所述的护鞘摆锯片，其中，所述驱动部为圆形转动部，所述驱动孔为多个且沿所述圆形转动部的转动圆弧方向设置。
  12. 根据权利要求11所述的护鞘摆锯片，其中，所述护鞘的尾端和所述圆形转动部的尾端均贯穿设置有用于与所述机头上的锁紧件配合的导向压紧槽；所述导向压紧槽均沿纵向设置。
  13. 根据权利要求11所述的护鞘摆锯片，其中，所述护鞘的尾端内部沿纵向中心轴线 对称设置有两个支撑骨架，两个所述支撑骨架的相对侧均设置有用于与所述圆形转动部配合的弧形槽；所述护鞘的尾端设置有限位孔，所述支撑骨架上设置有用于与所述限位孔配合的过孔。
  14. 根据权利要求13所述的护鞘摆锯片，其中，所述支撑骨架沿所述护鞘的纵向方向延伸至所述护鞘的前端。
  15. 根据权利要求1所述的护鞘摆锯片，其中，所述锯片本体从后向前宽度逐渐减小，所述锯片本体的前端的横向两侧均设置有凸耳，所述护鞘的横向两侧均开设有可供所述凸耳横向穿出的排屑口。
  16. 根据权利要求15所述的护鞘摆锯片，其中，所述凸耳的前端壁设置为便于驱动骨屑从所述排屑口排出的流线形结构。
  17. 根据权利要求15所述的护鞘摆锯片，其中，两个所述凸耳之间设有沿横向设置的第一避让孔。
  18. 根据权利要求1或15所述的护鞘摆锯片，其中，所述护鞘的前端上下面的横向两侧均设置有沿纵向排列的多个排屑孔。
  19. 根据权利要求18所述的护鞘摆锯片，其中，所述排屑孔与所述排屑口于所述护鞘的前端的横向两侧沿纵向设置于相同位置。
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