WO2015188734A1 - 超声骨刀刀头和具有其的超声骨刀 - Google Patents

超声骨刀刀头和具有其的超声骨刀 Download PDF

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Publication number
WO2015188734A1
WO2015188734A1 PCT/CN2015/081001 CN2015081001W WO2015188734A1 WO 2015188734 A1 WO2015188734 A1 WO 2015188734A1 CN 2015081001 W CN2015081001 W CN 2015081001W WO 2015188734 A1 WO2015188734 A1 WO 2015188734A1
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cutter head
ultrasonic bone
bone cutter
tip end
ultrasonic
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PCT/CN2015/081001
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English (en)
French (fr)
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曹群
李春媛
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曹群
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Publication of WO2015188734A1 publication Critical patent/WO2015188734A1/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
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • 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

Definitions

  • the present invention relates to the field of medical device technology, and in particular to an improved ultrasonic bone cutter head and an ultrasonic bone knife having the same.
  • 1A shows a typical structure of a conventional ultrasonic bone cutter head 100' which has a multi-toothed shape with a wide tip portion and a large portion of the cutting edge portion which is not an effective main cutting portion, as shown in the figure. Shown in 1B.
  • an ultrasonic bone cutter head 100' has the following problems. As shown in Fig. 2A, when the ultrasonic bone cutter head 100' is used, the bone 200' is biased toward the bone tissue as shown by F1 in Fig. 2A. When cutting is required, the ultrasonic bone cutter head 100' requires a force directed downwardly toward the bone tissue, which not only results in slow cutting speed, inefficiency, but also tends to cause the multi-toothed cutter head to break during operation. As shown by F2 in Fig. 2B. In addition, as shown in Figs.
  • the soft tissue 300' under the cut portion is invisible, and since the direction of the force of the operation is downward, it is easy to damage the undesired damaged tissue below, and the risk of surgery is greatly increased.
  • the success rate of surgery is low, and the difficulty of doctor operation is increased.
  • spinal surgery the usual spine requires a surgical site, and the lower part is the spinal cord. If the spinal cord is destroyed, it is dysfunctional, life-threatening, and death.
  • the present invention aims to solve at least one of the technical problems existing in the prior art.
  • the present invention needs to provide an ultrasonic bone cutter head that not only uses high efficiency but also has a high cutting speed to reduce the operation time.
  • the present invention needs to provide an ultrasonic bone cutter head that is accurately positioned when cutting, thereby improving the success rate of the operation.
  • the present invention also needs to provide an ultrasonic osteotome comprising an ultrasonic bone cutter head as described above.
  • An ultrasonic bone cutter head includes: a cutter bar; and a cutter head end, the cutter head end being coupled to a front end of the cutter bar, wherein the cutter tip end is spoon-shaped and front The edge of the portion is toothed; at least one of the two opposite side walls of the end of the tip that is connected to the convex surface and the concave surface is provided with a plurality of spaced apart first grooves.
  • such a design has a faster cutting speed, thereby reducing the operation time Between, and the positioning is accurate when cutting, does not slip, can improve the success rate of surgery, and at the same time, by providing a plurality of first grooves, can play the role of bone grinding, and can use the side wall of the end of the cutter head to cut the bone Improve the ease of use of the ultrasonic bone cutter head.
  • the ultrasonic bone cutter head according to the present invention has the following additional technical features:
  • each of the first grooves extends in a direction from the center of the spoon to the bottom of the spoon, and a plurality of the first grooves are distributed in a front to back direction.
  • the convex surface of the tip end portion is provided with a plurality of second grooves.
  • each of the second grooves extends in a width direction of the tip end portion, and a plurality of the second grooves are distributed in a front to back direction.
  • the width of the tip end is not less than the width of the shank.
  • the shank and the end of the tip end are hollow and communicate with each other.
  • the tip end is formed with an aperture at at least one of a spoon and a spoon bottom of the tip end.
  • the ultrasonic bone cutter head further includes: a blade body, the blade body being coupled to a rear end of the knife bar, wherein the blade body and the blade bar are cylindrical, and the blade body is cylindrical
  • the shape size is larger than the size of the arbor, and the arc between the blade and the arbor transitions.
  • the knife body is provided with a wrench bit.
  • a side of the body of the blade opposite the shank is formed with a threaded connection hole.
  • the front edge of the tip end portion is formed with a plurality of slots along a direction in which the concave end of the tip end faces the convex surface.
  • each of the slots is substantially less than 90 degrees from the direction of the concave end of the tip toward the convex surface.
  • one end of the tooth groove is in communication with a concave surface of the end of the cutter head, and the length of the tooth groove along the width direction of the end portion of the cutter head gradually changes from the middle to the both sides. small.
  • an ultrasonic osteotome comprising an ultrasonic bone cutter head as described above.
  • the ultrasonic bone knife design of the invention not only the cutting speed is faster, the operation time is reduced, and the positioning is accurate when cutting, and the slip phenomenon does not occur, thereby improving the success rate of the operation.
  • 1A is a schematic view showing the structure of an ultrasonic bone cutter head in the prior art.
  • FIG. 1B is a partially enlarged schematic view showing a portion A of FIG. 1A.
  • FIGS. 2A, 2B show schematic views of the operation of a prior art ultrasonic bone cutter bit.
  • FIG. 3 is a perspective view showing the structure of an ultrasonic bone cutter head according to an embodiment of the present invention.
  • FIG. 4 is a top plan view of an ultrasonic bone cutter head of one embodiment of the present invention.
  • Figure 5 is a front elevational view of an ultrasonic bone cutter head of one embodiment of the present invention.
  • Fig. 6 is a partially enlarged schematic view showing a portion B of Fig. 4.
  • FIG. 7 is a schematic illustration of the state of use of an ultrasonic bone cutter bit in accordance with one embodiment of the present invention.
  • FIG. 8 is a schematic illustration of another state of use of an ultrasonic bone cutter bit in accordance with one embodiment of the present invention.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • Fig. 3 is a perspective view of an ultrasonic bone cutter head 100 of one embodiment of the present invention.
  • 4 is a top plan view of an ultrasonic bone cutter head 100 in accordance with one embodiment of the present invention.
  • Figure 5 is a front elevational view of an ultrasonic bone cutter head 100 in accordance with one embodiment of the present invention.
  • Fig. 6 is a partially enlarged schematic view showing a portion B of Fig. 3.
  • an ultrasonic bone cutter head 100 can include a tip end 1 and a knife bar 2.
  • the tip end 2 is connected to the front end of the shank 1, wherein the tip end 2 is in the shape of a spoon and the front edge is toothed.
  • at least one of the two opposite side walls of the tip end portion 2 that is connected to the convex surface and the concave surface is provided.
  • a plurality of spaced apart first grooves 12 define a friction pattern.
  • each of the first grooves 12 extends in a direction from the center of the spoon to the bottom of the spoon, and the plurality of first grooves 12 are distributed in a front-to-rear direction, so that the number of the first grooves 12 can be increased. Improve the grinding effect of the side wall.
  • the ultrasonic bone cutter head 100 can function as a bone grinding, and the bone can be cut by the side wall of the cutter head end 2 to improve the ultrasonic bone cutter head 100. The ease of use.
  • the convex surface of the tip end portion 2 may also be provided with a plurality of second grooves (not shown), and the plurality of second grooves define a friction pattern, thereby further improving the ultrasonic wave.
  • each of the second grooves extends in the width direction of the tip end portion 2, and the plurality of second grooves are distributed in the front to back direction.
  • the blade body 3 and the tool bar 2 are connected, the tool bar 2 is a thin cylindrical section, the blade body 3 is a thick cylindrical section, a circular arc transition between the blade body 3 and the tool bar 2, and the blade body 3 is provided with a wrench bit 5,
  • a side of the body of the blade body 3 opposite the shank 2 is formed with a threaded connection hole 4 for threaded mounting connection with an ultrasonic transducer (not shown).
  • an ultrasonic transducer not shown.
  • the maximum width D2 at the front edge of the tip end 1 of the ultrasonic bone cutter head 100 is not less than the width D1 of the knife bar 2.
  • the advantage of this configuration is that the width of the tip end 1 cut when used is greater than or equal to the diameter of the shank 2.
  • the shank 2 and the tip end 1 of the ultrasonic bone cutter head 100 may be hollow and interconnected.
  • the orifice of the tip end 1 can be located in the center of the spoon.
  • the arriving tissue is completely in the cleaning and cooling of the perfusate in real time, ensuring that the removed bone chips are immediately discharged, the visual field of the incision is clear and clean, and the remaining tissue is protected from damage, especially in the scraping operation, so that The risk of surgery is further reduced, and the safety and success rate of surgery are improved.
  • the shank 2 and the tip end 1 of the ultrasonic bone cutter head 100 may be hollow and interconnected.
  • the orifice 6 of the tip end 1 can be located in the center of the spoon (corresponding to the aperture 6 provided on the concave surface) as shown in FIG.
  • the added benefit of this design is that the ultrasonic bone cutter head of the single-point outlet ensures that the perfusate flows from the blade body through the hollow structure to the center of the spoon and flows out, and the key and the entire tip end 1 are in contact with each other during the operation.
  • the resulting tissue is completely in the cleaning and cooling of the perfusate in real time, ensuring that the removed bone chips are immediately discharged, and the view at the incision is clear and clean, and Protecting the rest of the tissue should not be damaged, especially when the scraping operation (shown as F4 in Figure 8), so that the risk of surgery is further reduced, and the safety and success rate of surgery are improved.
  • the orifice 6 can also be arranged at the bottom of the spoon (corresponding to the opening 6 provided on the convex surface). According to one embodiment of the invention, there may be two apertures 6 in the tip end 1 of the tip end, respectively located at the center of the spoon and the bottom of the spoon.
  • the added benefit of this design is that the ultrasonic bone cutter head 100 at the double outlet of the keyhole ensures that the perfusate flows out simultaneously from the center of the spoon and the bottom of the spoon, and the center of the spoon and the spoon and the entire tip end during the operation.
  • the contacted tissue is completely in the cleaning and cooling of the perfusate in real time, ensuring that the removed bone chips are immediately discharged.
  • the visual field of the incision can be clearly cleaned and protected more advantageously during any cutting operation.
  • the remaining tissue to be retained is not damaged. This type is especially important when the end of the spoon-shaped tip is inserted between the dura mater and the vertebral body (bone) to be removed, and the force direction is operated from the inside to the outside.
  • the effluent at the bottom of the spoon protects the dura mater and spinal cord under the spoon, and the water at the center of the spoon protects the tissue above the spoon.
  • the other can also ensure sufficient fluid flow to provide protection.
  • the two effluent streams make the flow more complete to the tissue. In summary, this will further reduce the risk of surgery, and the safety and success rate of surgery will be further improved.
  • the front edge of the tip end 1 is formed with a plurality of slots 7 generally along the concave surface of the tip end 1 toward the convex surface.
  • Each of the slots 7 has an angle substantially less than 90 degrees from the direction in which the concave end of the tip end portion 1 faces the convex surface.
  • one end of the tooth groove 7 communicates with the concave surface of the tip end portion 1, and the length L1 of the tooth groove 7 along the direction gradually becomes smaller from the center to the both sides.
  • Surgical procedures can be performed with different sized teeth between adjacent gullets 7 to facilitate selection by the operator.
  • the operation of the ultrasonic bone cutter head according to an embodiment of the present invention will be described below with reference to Figs.
  • the ultrasonic bone cutter head 100 whose tip end is in the shape of a spoon according to an embodiment of the present invention
  • the bone 200 can be removed at any portion of the tip end portion 1 by the use principle of the spoon. Operation, the operator can arbitrarily choose the technique and posture that suits his or her own needs. There is no operational limitation, and it is convenient to use.
  • the tip end of the spoon-shaped cutter head can be inserted into the dura mater and the vertebra to be removed. Between the bodies (bone), the direction of the force is operated from the inside to the outside, as shown in Fig.
  • the perfusate is discharged through the air port 6 for cleaning and cooling, so that the spoon/key base and the entire tip end 1 and the contacted tissue are completely in the cleaning and cooling of the perfusate in real time, ensuring The bones (not shown) excised by the bone 200 are immediately discharged, the field of view at the incision is clear and clean, and the remaining tissue is protected from damage.
  • an ultrasonic osteotome comprising an ultrasonic bone cutter head as described above. According to the ultrasonic bone knife design of the invention, not only the cutting speed is faster, the operation time is reduced, and the positioning is accurate when cutting, and the slip phenomenon does not occur, thereby improving the success rate of the operation.

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Abstract

一种超声骨刀刀头（100）和具有其的超声骨刀。超声骨刀刀头（100）包括刀杆（2）和刀头端部（1）。刀头端部（1）与刀杆（2）的前端相连。匙形的刀头端部（1）的前部边缘为齿状；刀头端部（1）的与凸面和凹面相连的两个相对侧壁中的至少一个上设有多个间隔开的第一凹槽（12）。

Description

超声骨刀刀头和具有其的超声骨刀 技术领域
本发明涉及医疗器械技术领域，尤其涉及一种改进的超声骨刀刀头和具有其的超声骨刀。
背景技术
现有骨科器械(电钻等)及超声骨刀刀头，在手术过程中操作时，大部分操作的用力方向都是向下，这样会带来很大的风险。
图1A示出了传统的超声骨刀刀头100’的典型结构，该超声骨刀刀头100’多齿，有较宽的刀尖部分，且刀尖部分多不是有效主要切割部位，如图1B中所示。
但是，这种超声骨刀刀头100’存在如下问题。如图2A中所示，当用该超声骨刀刀头100’对骨头200’朝向骨组织用力，如图2A中F1所示。当需要进行切割时，该超声骨刀刀头100’需要垂直向下朝向骨组织用力，这不仅会导致切割速度慢、效率低下，而且容易导致带多齿的刀头在操作过程中断裂。如图2B中的F2所示。在外，如图2A、2B中所示，被切割处下方的软组织300’是看不到的，由于操作的用力方向向下，就很容易破坏到下方非预期破坏的组织，使手术风险大大增加，手术数成功率变低，医生操作难度增加。例如，在脊柱手术中，通常的脊柱需进行手术部位，下方就是脊髓，如果脊髓被破坏了，轻则功能缺失、终生瘫痪，重则死亡。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。
为此，本发明需要提供一种超声骨刀刀头，所述超声骨刀刀头不仅使用效率高、而且切割速度快，以降低手术时间。
进一步地，本发明需要提供一种超声骨刀刀头，所述超声骨刀刀头切割时定位准确，从而提高手术成功率。
此外，本发明还需要提供一种包括如上所述的超声骨刀刀头的超声骨刀。
根据本发明的实施例的超声骨刀刀头包括：刀杆；以及刀头端部，所述刀头端部与所述刀杆的前端相连，其中所述刀头端部呈匙形且前部边缘为齿状；所述刀头端部的与凸面和凹面相连的两个相对侧壁中的至少一个上设有多个间隔开的第一凹槽。
在根据本发明实施例的超声骨刀刀头中，这样的设计切割速度更快，从而降低手术时 间，而且切割时定位准确，不打滑，能够提高手术成功率，同时通过设有多个第一凹槽，可以起到磨骨的作用，且可采用刀头端部的侧壁对骨头进行切割，提高超声骨刀刀头的使用便利性。
另外，根据本发明的超声骨刀刀头还具有如下附加技术特征：
优选地，每个所述第一凹槽在从匙心到匙底的方向上延伸，且多个所述第一凹槽在从前到后的方向上分布。
根据本发明的一些实施例，所述刀头端部的凸面上设有多个第二凹槽。
优选地，每个所述第二凹槽在所述刀头端部的宽度方向上延伸，多个所述第二凹槽在从前到后的方向上分布。
根据本发明的一个实施例，所述刀头端部的宽度不小于所述刀杆的宽度。
根据本发明的一个实施例，所述刀杆和所述刀头端部内部为中空结构且相互连通。
根据本发明的一个实施例，所述刀头端部形成有孔口，所述空口位于所述刀头端部的匙心和匙底中的至少一个处。
根据本发明的一个实施例，超声骨刀刀头还包括：刀身，所述刀身与所述刀杆的后端连接，其中所述刀身和所述刀杆为圆柱形，且所述刀身的圆柱形尺寸大于所述刀杆的尺寸，且所述刀身和所述刀杆之间圆弧过渡。
根据本发明的一个实施例，所述刀身上设置有扳手位。
根据本发明的一个实施例，所述刀身的主体上与所述刀杆相对的一侧形成有螺纹连接孔。
根据本发明的一个实施例，所述刀头端部的所述前部边缘大致沿所述刀头端部的凹面朝向凸面的方向形成有多个齿槽。
根据本发明的一个实施例，每个所述齿槽大致与所述刀头端部的凹面朝向凸面的方向的夹角小于90度。
根据本发明的一个实施例，所述齿槽的一端与所述刀头端部的凹面相连通，所述齿槽沿着所述刀头端部的宽度方向的长度自中间向两侧逐渐变小。
根据本发明的第二方面，进一步提供了一种包括如上所述的超声骨刀刀头的超声骨刀。
根据本发明的超声骨刀设计，不仅切割速度更快，降低手术时间，而且切割时定位准确，不会发生打滑现象，从而能够提高手术的成功率。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1A是现有技术中超声骨刀刀头的结构示意图。
图1B为图1A中部分A的局部放大结构示意图。
图2A、2B显示了现有技术的超声骨刀刀头的操作示意图。
图3是本发明的一个实施例的超声骨刀刀头的立体结构示意图。
图4是本发明的一个实施例的超声骨刀刀头的俯视图。
图5是本发明的一个实施例的超声骨刀刀头的主视图。
图6是图4中的部分B的局部放大结构示意图。
图7是根据本发明的一个实施例的超声骨刀刀头的使用状态示意图。
图8是根据本发明的一个实施例的超声骨刀刀头的另一使用状态示意图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“上”、“下”“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。
下面将参照附图来说明根据本发明的一个实施例的超声骨刀刀头100，其中图3是本发明的一个实施例的超声骨刀刀头100的立体结构示意图。图4是本发明的一个实施例的超声骨刀刀头100的俯视图。图5是本发明的一个实施例的超声骨刀刀头100的主视图。图6是图3中的部分B的局部放大结构示意图。
如图3中所示，根据本发明的一个实施例，超声骨刀刀头100可以包括：刀头端部1和刀杆2。刀头端部2与刀杆1的前端相连，其中所述刀头端部2呈匙形且前部边缘为齿状。如图6中所示，刀头端部2的与凸面和凹面相连的两个相对侧壁中的至少一个上设有 多个间隔开的第一凹槽12，多个第一凹槽12限定出摩擦花纹。优选地，每个第一凹槽12在从匙心到匙底的方向上延伸，且多个第一凹槽12在从前到后的方向上分布，从而可以增加第一凹槽12的数量，提高侧壁的磨切效果。
这样的设计使得切割速度更快，从而降低手术时间，而且切割时定位准确，不打滑，能够提高手术成功率。同时通过设有多个第一凹槽12，使得超声骨刀刀头100可起到磨骨的作用，且可采用刀头端部2的侧壁对骨头进行切割，提高超声骨刀刀头100的使用便利性。
在本发明的一些实施例中，刀头端部2的凸面上也可以设有多个第二凹槽(图未示出)，多个第二凹槽限定出摩擦花纹，从而可以进一步提高超声骨刀刀头100使用的便利性，优选地，每个第二凹槽在刀头端部2的宽度方向上延伸，多个第二凹槽在从前到后的方向上分布。
如图3中所示，刀身3和刀杆2连接，刀杆2为细圆柱段，刀身3为粗圆柱段，刀身3和刀杆2之间圆弧过渡，刀身3设置有扳手位5，刀身3的主体上与所述刀杆2相对的一侧形成有螺纹连接孔4，螺纹安装孔4用于与超声换能器(未示出)进行螺纹安装连接。在需要使用时，利用本刀头后端的螺纹连接孔4与特定的超声换能器连接，并用相应的扳手在扳手位5拧紧，再将超声换能器连接于特定的超声主机，即可进行超声切割。
根据本发明的一个实施例，超声骨刀刀头100的刀头端部1的前部边缘处的最大宽度D2不小于刀杆2的宽度D1。这种结构的好处在于当使用时刀头端部1切割出的宽度就大于或等于刀杆2的直径。在手术过程中，切割较厚的骨头或切割较深的槽、窗型切口时，就能避免出现夹刀卡死现象，同时还能确保灌注水流流至刀头端部切割处，保证切口不会被灼伤。
根据本发明的一个实施例，超声骨刀刀头100的刀杆2和刀头端部1内部可以为中空结构且相互连通。刀头端部1的孔口可以位于匙心。这种设计增加的好处在于，匙心单出口的超声骨刀刀头可确保灌注液由刀身通过中空结构而流动至匙心处并流出，手术时使匙心及整个刀头端部1和接触到的组织实时地完全处于灌注液的清洗和冷却中，确保被切除的骨屑即时排出，切口处视野清晰洁净，且保护剩余要保留组织不被损伤，在刮削操作时体现尤为明显，这样就使手术风险进一步降低，手术安全性、成功率得到提高。
根据本发明的一个实施例，超声骨刀刀头100的刀杆2和刀头端部1内部可以为中空结构且相互连通。刀头端部1的孔口6可以位于匙心(相当于凹面上设有孔口6)，如图6中所示。这种设计增加的好处在于，匙心单出口的超声骨刀刀头可确保灌注液由刀身通过中空结构而流动至匙心处并流出，手术时使匙心及整个刀头端部1和接触到的组织实时地完全处于灌注液的清洗和冷却中，确保被切除的骨屑即时排出，切口处视野清晰洁净，且 保护剩余要保留组织不被损伤，在刮削操作(如图8中F4所示)时体现尤为明显，，这样就使手术风险进一步降低，手术安全性、成功率得到提高。
根据本发明的一个实施例，孔口6也可以设置在匙底(相当于凸面上设有孔口6)。根据本发明的一个实施例，刀头端部1的孔口6可以有两个，分别位于匙心和匙底。这种设计增加的好处在于，匙心匙底双出口的超声骨刀刀头100可确保灌注液由匙心和匙底处同时流出，手术时使匙心和匙底及整个刀头端部和接触到的组织实时的完全处于灌注液的清洗和冷却中，确保被切除的骨屑即时排出，由于有上下两处出水，在任何切除操作时都能使切口处视野清晰洁净，且更加有利保护剩余要保留组织不被损伤，在将匙形刀头端部伸进硬脊膜与要去除的椎体(骨头)之间，用力的方向由内向外进行操作时，这种类型尤为重要，因为匙底处的出水对处于匙底下方的硬脊膜及脊髓进行保护，匙心处出水对匙心上方的组织进行保护。另外还有，在手术时有一处出水口被堵或被阻时，另一处还能保证液流的充分流出提供保护。再有，两处出水使液流流至组织更加充分。综上，这样就使手术风险更加进一步降低，手术安全性、成功率得到更进一步提高。
根据本发明的一个实施例，刀头端部1的所述前部边缘大致沿所述刀头端部1的凹面朝向凸面的方向形成有多个齿槽7。每个所述齿槽7大致与刀头端部1的凹面朝向凸面的方向的夹角小于90度。如图6中所示，齿槽7的一端与刀头端部1的凹面相连通，齿槽7沿着所述方向的长度L1自中间向两侧逐渐变小。可以用相邻齿槽7之间的不同尺寸的齿来进行手术操作，方便手术人员进行选择。
下面将参照附图7、8来描述根据本发明的实施例的超声骨刀刀头的操作。在操作根据本发明的一个实施例的、刀头端部为匙形的超声骨刀刀头100时，利用匙子的使用原理，匙形刀头端部1的任意部位都可对骨头200进行去除操作，操作者可任意选择适合自己想要进行的手法、姿势使用，没有操作上的局限性，方便使用，在使用时可将匙形刀头端部1伸进硬脊膜与要去除的椎体(骨头)之间，用力的方向由内向外进行操作，如图7中所示，这样就减小了对硬脊膜等的软组织300意外破坏损伤的危险，降低了手术风险，减少了操作难度。同时在手术过程中，通过空口6流出灌注液进行清洗和冷却，从而使匙心/匙底及整个刀头端部1和接触到的组织实时地完全处于灌注液的清洗和冷却中，确保从骨头200切除的骨屑(未示出)即时排出，切口处视野清晰洁净，且保护剩余要保留组织不被损伤。
根据本发明的一个实施例，进一步提供了一种包括如上所述的超声骨刀刀头的超声骨刀。根据本发明的超声骨刀设计，不仅切割速度更快，降低手术时间，而且切割时定位准确，不会发生打滑现象，从而能够提高手术的成功率。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示 例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (14)

  1. 一种超声骨刀刀头，其特征在于，包括：
    刀杆；以及
    刀头端部，所述刀头端部与所述刀杆的前端相连，其中
    所述刀头端部呈匙形且前部边缘为齿状；
    所述刀头端部的与凸面和凹面相连的两个相对侧壁中的至少一个上设有多个间隔开的第一凹槽。
  2. 根据权利要求1所述的超声骨刀刀头，其特征在于，每个所述第一凹槽在从匙心到匙底的方向上延伸，且多个所述第一凹槽在从前到后的方向上分布。
  3. 根据权利要求1所述的超声骨刀刀头，其特征在于，所述刀头端部的凸面上设有多个第二凹槽。
  4. 根据权利要求3所述的超声骨刀刀头，其特征在于，每个所述第二凹槽在所述刀头端部的宽度方向上延伸，多个所述第二凹槽在从前到后的方向上分布。
  5. 根据权利要求1所述的超声骨刀刀头，其特征在于，所述刀头端部的所述前部边缘处的最大宽度不小于所述刀杆的宽度。
  6. 根据权利要求1-5中任一项所述的超声骨刀刀头，其特征在于，所述刀杆和所述刀头端部内部为中空结构且相互连通。
  7. 根据权利要求6所述的超声骨刀刀头，其特征在于，所述刀头端部形成有孔口，所述孔口位于所述刀头端部的匙心和匙底中的至少一个处且与所述中空结构相连通。
  8. 根据权利要求6所述的超声骨刀刀头，其特征在于，还包括：
    刀身，所述刀身与所述刀杆的后端连接，其中
    所述刀身和所述刀杆为圆柱形，且所述刀身的圆柱形尺寸大于所述刀杆的尺寸，且所述刀身和所述刀杆之间圆弧过渡。
  9. 根据权利要求8所述的超声骨刀刀头，其特征在于，所述刀身上设置有扳手位。
  10. 根据权利要求9所述的超声骨刀刀头，其特征在于，所述刀身的主体上与所述刀杆相对的一侧形成有螺纹连接孔，所述螺纹连接孔与所述中空结构相连通。
  11. 根据权利要求1所述的超声骨刀刀头，其特征在于，所述刀头端部的所述前部边缘大致沿所述刀头端部的凹面朝向凸面的方向形成有多个齿槽。
  12. 根据权利要求11所述的超声骨刀刀头，其特征在于，每个所述齿槽大致与所述刀头端部的凹面朝向凸面的方向的夹角小于90度。
  13. 根据权利要求11所述的超声骨刀刀头，其特征在于，所述齿槽的一端与所述刀头端部的凹面相连通，所述齿槽沿着所述刀头端部的宽度方向的长度自中间向两侧逐渐变小。
  14. 一种超声骨刀，其特征在于，包括如权利要求1-13中任一所述的超声骨刀刀头。
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