WO2015010506A1 - 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
WO2015010506A1
WO2015010506A1 PCT/CN2014/079580 CN2014079580W WO2015010506A1 WO 2015010506 A1 WO2015010506 A1 WO 2015010506A1 CN 2014079580 W CN2014079580 W CN 2014079580W WO 2015010506 A1 WO2015010506 A1 WO 2015010506A1
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WO
WIPO (PCT)
Prior art keywords
hook
cutter head
blade
ultrasonic
tip
Prior art date
Application number
PCT/CN2014/079580
Other languages
English (en)
French (fr)
Inventor
曹群
李春媛
沈建雄
Original Assignee
Cao Qun
Li Chunyuan
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 Cao Qun, Li Chunyuan filed Critical Cao Qun
Priority to KR2020167000006U priority Critical patent/KR200484760Y1/ko
Priority to JP2016600059U priority patent/JP3205419U/ja
Priority to AU2014295671A priority patent/AU2014295671B2/en
Priority to EP14829688.2A priority patent/EP3025660B1/en
Priority to ES14829688T priority patent/ES2841348T3/es
Priority to BR112016001234-8A priority patent/BR112016001234B1/pt
Publication of WO2015010506A1 publication Critical patent/WO2015010506A1/zh
Priority to US14/997,750 priority patent/US10076350B2/en

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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
    • A61B17/3205—Excision instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/14—Surgical saws ; Accessories therefor
    • A61B17/142—Surgical saws ; Accessories therefor with reciprocating saw blades, e.g. with cutting edges at the distal end of the saw blades
    • 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
    • A61B17/142—Surgical saws ; Accessories therefor with reciprocating saw blades, e.g. with cutting edges at the distal end of the saw blades
    • A61B17/144—Surgical saws ; Accessories therefor with reciprocating saw blades, e.g. with cutting edges at the distal end of the saw blades with cutting edges at the side of the saw blades
    • 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
    • A61B17/1659—Surgical rasps, files, planes, or scrapers
    • 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
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • 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
    • A61B17/3209—Incision instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320072—Working tips with special features, e.g. extending parts
    • A61B2017/320074—Working tips with special features, e.g. extending parts blade
    • A61B2017/320075—Working tips with special features, e.g. extending parts blade single edge blade, e.g. for cutting

Definitions

  • Ultrasonic bone cutter head and ultrasonic bone cutter with the same
  • the present invention relates to the field of medical device technology, and more particularly to an improved ultrasonic bone cutter head and an ultrasonic bone cutter having the same. Background technique
  • FIG. 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 which is not an effective main cutting portion, as shown in the figure. Shown in 1B.
  • this 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 urged toward the bone tissue as shown by F1 in Fig. 2A. When cutting is required, the ultrasonic bone cutter head 100' requires a downward force toward the bone tissue, which not only causes slow cutting speed, low efficiency, but also easily causes the multi-toothed cutter head to break during operation. This is shown by F2 in Figure 2B. However, during the operation, it is easy to cause accidental insertion into soft tissues such as bone marrow 300 ', resulting in irreparable damage to the operator. In addition, the ultrasonic bone cutter head 100' has a complicated shape, high processing difficulty, and high production cost. Summary of the invention
  • 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 which is not only highly efficient but also has a high cutting speed to reduce the operation time.
  • the present invention needs to provide an ultrasonic bone cutter head, which is accurate in positioning during cutting, thereby improving the success rate of surgery.
  • 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 the cutter bar, and the cutter head end is hook-shaped and includes a hook tip and a hook a handle and a hook-shaped connecting portion connected between the hook tip and the hook handle, wherein the hook handle is connected to the cutter bar, and an inner edge of the hook-shaped connecting portion is toothed.
  • the ultrasonic bone cutter head according to the embodiment of the present invention since the cutting can be performed with the hook tip, the efficiency is high and the operation time is short, thereby reducing the labor intensity of the medical staff. In addition, accurate positioning during cutting and no slipping can improve the success rate of surgery.
  • the ultrasonic bone cutter head according to the embodiment of the invention is extremelyly designed, can accurately control the cutting amount and shape of the bone, and reduce the amount of bone loss during the operation.
  • the ultrasonic bone cutter head according to the embodiment of the present invention has a hemostatic coagulation effect during the osteotomy, and reduces the amount of intraoperative blood loss. Further, the ultrasonic bone cutter head according to the embodiment of the present invention has low processing difficulty and low production cost. In addition, the ultrasonic bone cutter head according to the present invention has the following additional technical features:
  • the outer edge of the hook-shaped connection is toothed.
  • the tip end is configured as a flat hook.
  • the cross section of the stalk gradually becomes larger from the hook-shaped connecting portion toward the arbor.
  • the other end of the cross-sectional hook valley of the hook tip is connected to the wide end of the hook tip.
  • the ultrasonic bone cutter head further includes a blade body, the blade body is connected to the blade bar, and a joint of the blade bar and the blade body is a circular arc transition, and the blade body is formed There are wrenches.
  • the shank is integrally formed with the tip end.
  • the hook tip, the hook handle and the hook-shaped connecting portion are integrally formed.
  • the adjacent tooth pitches of the teeth formed on the inner side of the hook-shaped connecting portion gradually become larger from the hook tip toward the hook shank.
  • a hook-shaped ultrasonic bone cutter head comprising a cutter rod and a head end, one end of the head end being connected to one end of the cutter rod, the head end being hook-shaped, and the hook shape including a hook tip and a hook Valley and stalk, the edge of the hook is toothed.
  • an ultrasonic osteotome comprising an ultrasonic bone cutter head as described above.
  • 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. 1.
  • 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 front elevational view of an ultrasonic bone cutter head of one embodiment of the present invention.
  • Figure 5 is a top plan view of an ultrasonic bone cutter head in accordance with one embodiment of the present invention.
  • Fig. 6 is a partially enlarged schematic view showing a portion B of Fig. 3.
  • Fig. 7 is a partially enlarged schematic view showing another embodiment of a portion B in Fig. 3.
  • FIG. 8 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. 9 is a schematic illustration of another state of use of an ultrasonic bone cutter bit in accordance with one embodiment of the present invention. detailed description
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include one or more of the features, either explicitly or implicitly.
  • “multiple” means two or more unless otherwise stated.
  • connection should be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined.
  • Connected, or connected integrally 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 structural view of an ultrasonic bone cutter head 100 according to an embodiment of the present invention
  • Figure 5 is a top plan view of an ultrasonic bone cutter head of one embodiment of the present invention.
  • the ultrasonic bone cutter head 100 can include a tip end 1 and a shank 2, in accordance with an embodiment of the present invention.
  • the cutter head end 1 is connected to the cutter bar 2, and the cutter head end 1 is hook-shaped and includes a hook tip 11, a hook handle 13 and a hook-shaped connecting portion connected between the hook tip 11 and the hook handle 13. 12, as shown in Figure 3-6.
  • the tip end 1 is in the form of a flat hook, as shown in Fig. 5, the tip end 1 comprises a hook tip 11, a hook or hook connection 12 and a stalk 13 , as shown in Figure 6.
  • the hook shank 13 is coupled to the shank 2, and the inner edge of the hook-shaped connecting portion 12 is toothed.
  • the cross section of the hook shank 13 gradually becomes larger from the hook-shaped connecting portion 12 toward the arbor 2, whereby the cantilever strength of the stalk shank is enhanced during the operation.
  • the outer edge of the hook-shaped connecting portion 12 is toothed, that is, the outer edge of the hook-shaped connecting portion 12 is provided with a plurality of grooves 14 defining a tooth between adjacent grooves.
  • the plurality of grooves define a plurality of teeth such that the outer edge of the hook-shaped connecting portion 12 is toothed. Therefore, when the ultrasonic bone cutter head 100 is used, not only the toothed inner edge of the hook-shaped connecting portion 12 can be used for grinding the bone, but also the toothed outer edge of the hook-shaped connecting portion 12 can be used for grinding the bone. The use convenience of the ultrasonic bone cutter head 100 is improved.
  • the cross section of the hook tip 11 gradually becomes larger in the direction toward the hook-shaped connecting portion 12. Therefore, during the cutting process, the hook tip 11 is used to speed up the cutting speed, and because of the hook tip, the positioning is accurate when cutting. Indeed, there is no slippage that can increase the success rate of surgery.
  • the ultrasonic bone cutter head further comprises a blade body 3, the knife bar 2 is connected to the blade body 3, the knife bar 2 and the blade body 3 are transitioned by a circular arc, and the end of the blade body 3 is provided with a connecting thread 4.
  • the blade body 3 is formed with a wrench bit 5 such as a regular hexagon, whereby it can be fixed or tightened by a tool such as a wrench during assembly.
  • the connecting thread 4 of the tip end of the embodiment is connected to an ultrasonic transducer (not shown) and tightened with a corresponding wrench, and then the ultrasonic transducer is connected to the ultrasonic host, the operation can be performed. jobs.
  • the shank 2 and the tip end portion 1 can be integrally formed, thereby reducing the manufacturing cost.
  • the cutter head end 1, the cutter bar 2 and the blade body 3 may be integrally formed.
  • the tooth pitch D of the adjacent teeth gradually becomes larger from the hook tip toward the hook shank.
  • the hook-shaped ultrasonic bone cutter head 100 When the bone is required to be cut, when the hook-shaped ultrasonic bone cutter head 100 is used, it can be used like a hook hook, or can be used like a sickle, and other random techniques, the hook of the hook end 1
  • the tip 11 can be directly used for cutting, and when the hook tip 11 is used for cutting, the hook handle 13 acts as a latching position, thereby ensuring the cutting depth of the cutter head and protecting the surrounding bone tissue, thereby conveniently positioning and operating the ultrasonic bone cutter.
  • the cutter head 100 Since the tip end portion 1 is constructed in a flat hook shape, it is also convenient for the user to position during use.
  • the hook tip 11 in use, can also be used for a latching action against the upper or lower edge of the bone, and the toothed inner edge of the hook-shaped connecting portion 12 cuts the bone.
  • the hook handle and the hook tip are simultaneously locked.
  • the direction of force is parallel to the bone surface or backward. This forms a fulcrum with the hook tip 11 during the cutting process and cuts along this fulcrum.
  • the advantage of this structure is that it can protect the surrounding tissue, and the cutting depth and thickness can be precisely controlled during the cutting process.
  • the hook tip When used during surgery, the hook tip can be inserted between the dura mater and the vertebral body (bone) to be removed. As shown in Fig. 8, the hook tip 11 forms a fulcrum against the bone 200, and the direction of the force is from the inward direction. External operation, thereby reducing the risk of accidental damage to soft tissue 300 such as dura mater, thereby avoiding irreversible permanent damage to bone marrow tissue, reducing the risk of surgery and reducing the difficulty of operation, especially for the whole block The bone is removed and the removed bone can be reset.
  • Figure 9 shows the bone 200 being pushed from right to left with a hook-shaped ultrasonic bone cutter head 100. Since the hook tip 11 is a fulcrum at this time and the force is from left to right, even if detachment occurs, the ultrasonic bone cutter head 100 It will also go outwards to avoid harming soft tissue 300.
  • the present invention also provides an ultrasonic osteotome comprising the ultrasonic bone cutter head as described above, which can be cut with a hook tip, has high efficiency and short operation time, thereby reducing medical personnel's Labor intensity, accurate positioning when cutting, no slipping, can improve the success rate of surgery.
  • the ultrasonic osteotome according to the embodiment of the present invention isakily designed, and can accurately control the cutting amount and shape of the bone, and reduce the amount of bone loss during the operation.
  • the ultrasonic osteotome according to the embodiment of the present invention has a hemostatic coagulation effect during the osteotomy, and reduces the amount of intraoperative blood loss. Further, according to The ultrasonic bone cutter head of the embodiment of the invention has low processing difficulty and low production cost.

Abstract

一种超声骨刀刀头以及包括该超声骨刀刀头的超声骨刀，超声骨刀刀头包括刀头端部（1）和刀杆（2）。刀头端部（1）的一端与刀杆（2）相连，所述刀头端部（1）呈钩形，且包括钩尖（11）、钩柄（13）和连接在钩尖（11）和钩柄（13）之间的钩形连接部（12）。钩柄（13）与所述刀杆（2）相连，且所述钩形连接部（12）的内侧边缘为齿状。该超声骨刀切割效率高且手术时间短，降低了医护人员的劳动强度，切割时定位准确，不打滑，能够提高手术成功率。

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
在骨科手术中， 经常使用超声骨刀对骨头进行切割、 磨削、 刨削、 刮削或者任意整形。 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。 但是， 这在手术的过程中， 容易导致意外插入到骨髓等软组织 300 ' ， 造成对被手术者不可恢复的损伤。此外， 该超声 骨刀刀头 100 ' 的形状复杂， 加工难度高， 生产成本高。 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， 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， 所述刀头端部与刀杆 相连， 且所述刀头端部成钩形且包括钩尖、 钩柄和连接在所述钩尖和所述钩柄之间的钩形 连接部， 其中所述钩柄与所述刀杆相连， 且所述钩形连接部的内侧边缘为齿状。
在根据本发明实施例的超声骨刀刀头中， 由于可以用钩尖来进行切割， 效率高且手术时 间短， 从而降低了医护人员的劳动强度。 此外， 切割时定位准确， 不打滑， 能够提高手术 成功率。 此外根据本发明实施例的超声骨刀刀头设计精致小巧， 可精确控制对骨头的切削 量以及形状， 降低术中的切骨损失量。 此外， 利用根据本发明实施例的超声骨刀刀头在切 骨过程中有止血凝血效果， 降低术中出血量。 进一步地， 根据本发明实施例的超声骨刀刀 头加工难度小， 生产成本低。 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：
根据本发明的一些实施例， 所述钩形连接部的外侧边缘为齿状。
根据本发明的一个实施例， 所述刀头端部被构造成扁平钩形。
根据本发明的一个实施例，所述钩柄的横截面自所述钩形连接部朝向刀杆的方向逐渐变 大'
根据本发明的一个实施例， 所述钩尖的横截面钩谷的另一端连接钩尖的宽端。
根据本发明的一个实施例， 所述超声骨刀刀头还包括刀身， 所述刀身与所述刀杆相连且 所述刀杆和所述刀身的连接处为圆弧过渡， 所述刀身上形成有扳手位。
根据本发明的一个实施例， 所述刀杆与所述刀头端部一体形成。
根据本发明的一个实施例， 所述钩尖、 所述钩柄和所述钩形连接部一体形成。
根据本发明的一个实施例，所述钩形连接部的内侧上所形成的齿中相邻的齿间距自钩尖 朝向所述钩柄逐渐变大。
根据本发明的第二方面， 提供了一种钩形超声骨刀刀头， 包括刀杆和头端， 头端的一端 与刀杆的一端连接， 头端为钩形， 钩形包括钩尖、 钩谷和钩柄， 钩谷边缘为齿状。
根据本发明的第三方面， 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。 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 1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主视图。
图 5是本发明的一个实施例的超声骨刀刀头的俯视图。
图 6是图 3中的部分 B的局部放大结构示意图。
图 7为图 3中的部分 B的另一个实施例的局部放大结构示意图。
图 8是根据本发明的一个实施例的超声骨刀刀头的使用状态示意图。
图 9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的主视图； 图 5是本发明的一个实施例的超声骨刀刀头的俯视图。
经过多年的研究，发明人发现改进超声骨刀刀头 100的结构形状能够显著地改进该超声 骨刀刀头的使用安全性和效率。 如图 3 中所示， 根据本发明的一个实施例， 该超声骨刀刀 头 100可以包括刀头端部 1和刀杆 2。刀头端部 1与刀杆 2相连， 且刀头端部 1呈钩形且包 括钩尖 11、钩柄 13和连接在所述钩尖 11和所述钩柄 13之间的钩形连接部 12， 如图 3-6中 所示。
根据本发明的一个实施例， 刀头端部 1为扁平状的钩形， 如图 5中所示， 该刀头端部 1 包括钩尖 11、 钩谷或者钩形连接部 12和钩柄 13， 如图 6中所示。 钩柄 13与刀杆 2相连， 且钩形连接部 12的内侧边缘为齿状。 如图 5中所示， 钩柄 13的横截面自钩形连接部 12朝 向刀杆 2的方向逐渐变大， 由此在操作过程中， 钩柄的悬臂强度得以增强。
在本发明的一些实施例中， 钩形连接部 12的外侧边缘为齿状， 即钩形连接部 12的外侧 边缘设有多个凹槽 14， 相邻的凹槽之间限定出一个齿， 多个凹槽限定出多个齿以使得钩形 连接部 12的外侧边缘为齿状。 从而在使用超声骨刀刀头 100时， 不仅可以使用钩形连接部 12的齿状的内侧边缘对骨头进行磨切，还可以使用钩形连接部 12的齿状的外侧边缘为骨头 进行磨切， 提高了超声骨刀刀头 100的使用便利性。
根据本发明的一个实施例， 钩尖 11的横截面沿着朝向钩形连接部 12的方向逐渐变大。 由此， 在切割过程中， 利用钩尖 11来加快切割速度， 且由于是钩尖的缘故， 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。
根据本发明的一个实施例， 该超声骨刀刀头进一步包括刀身 3， 刀杆 2连接至刀身 3， 刀杆 2和刀身 3之间通过圆弧过渡， 刀身 3的端部处设置有连接螺纹 4。根据本发明的一个 实施例， 刀身 3上形成有例如正六角的扳手位 5， 由此在装配时可以用例如扳手等工具来固 定或者拧紧。 在使用中， 当将本具体实施方式的刀头尾部的连接螺纹 4 与超声换能器 （未 示出） 连接， 并用相应的扳手拧紧， 再将超声换能器连接于超声主机， 即可进行工作。 如 图 4中所示， 根据本发明的一个实施例， 刀杆 2与刀头端部 1可以一体形成， 从而降低制 造成本。 进一步地， 刀头端部 1、 刀杆 2和所述刀身 3可以一体形成。
如图 6中所示， 钩形连接部 12的内侧上所形成的齿中， 相邻的所述齿的齿间距 D自钩 尖朝向所述钩柄逐渐变大。
下面将参照图 8-9来描述根据本发明的一个实施例的超声骨刀刀头的使用方法。
当需要切割骨头时， 操作使用该钩形的超声骨刀刀头 100时， 可以像钩子钩东西一样使 用， 或可以像镰刀一样使用， 以及其它随意手法使用， 钩形刀头端部 1的钩尖 11可以直接 用来切割， 钩尖 11用作切割时， 钩柄 13起卡位作用， 从而保证刀头的切割深度， 保护周 围的骨组织， 由此可以方便地定位和操作该超声骨刀刀头 100。 由于所述刀头端部 1被构造 成扁平钩形， 由此也方便使用者在使用过程中的定位。
根据本发明的一个实施例， 在使用中， 钩尖 11也可用于卡位作用， 用来抵住骨头的上 沿或下沿，钩形连接部 12的齿状的内侧边缘对骨头进行切割，此时有钩柄与钩尖同时卡位。 用力的方向为与骨面平行或向后上方。 这样在切割过程中会以钩尖 11形成一个支点， 并沿 着这个支点进行切割。 这样结构的优点在于能对周围的组织起到保护作用， 且切割过程中 切割深度、 厚度都可精确把控。
如在手术中使用时，可将钩尖伸进硬脊膜与要去除的椎体（骨头）之间， 如图 8中所示， 钩尖 11抵住骨头 200形成支点， 用力的方向由内向外进行操作， 由此就减小了对例如硬脊 膜等软组织 300 意外破坏损伤的危险， 从而避免对骨髓组织造成不可恢复的永久性伤害降 低了手术风险， 减少了操作难度， 尤其适用整块取骨， 取下的骨头可复位。 图 9 示出了在 用钩形的超声骨刀刀头 100 自右向左推动骨头 200， 由于此时钩尖 11为支点且用力为从左 向右， 即使出现脱离， 超声骨刀刀头 100也会向外， 从而避免伤害软组织 300。
进一步地， 本发明还提供了一种包括如上所述的超声骨刀刀头的超声骨刀， 该超声骨刀 可以用钩尖来进行切割， 效率高且手术时间短， 从而降低了医护人员的劳动强度， 切割时 定位准确， 不打滑， 能够提高手术成功率。 此外， 根据本发明实施例的超声骨刀设计精致 小巧， 可精确控制对骨头的切削量以及形状， 降低术中的切骨损失量。 此外， 利用根据本 发明实施例的超声骨刀在切骨过程中有止血凝血效果， 降低术中出血量。 进一步地， 根据 本发明实施例的超声骨刀刀头加工难度小， 生产成本低。
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

权利要求书
1、 一种超声骨刀刀头， 其特征在于， 包括：
刀杆； 以及
刀头端部， 所述刀头端部与刀杆相连， 且所述刀头端部呈钩形且包括钩尖、 钩柄和连接 在所述钩尖和所述钩柄之间的钩形连接部， 其中
所述钩柄与所述刀杆相连， 且所述钩形连接部的内侧边缘为齿状。
2、 根据权利要求 1所述的超声骨刀刀头， 其特征在于， 所述钩形连接部的外侧边缘为 齿状。
3、 根据权利要求 1所述的超声骨刀刀头， 其特征在于， 所述刀头端部被构造成扁平钩 形。
4、 根据权利要求 3所述的超声骨刀刀头， 其特征在于， 所述钩柄的横截面自所述钩形 连接部朝向刀杆的方向逐渐变大。
5、 根据权利要求 4所述的超声骨刀刀头， 其特征在于， 所述钩尖的横截面沿着朝向钩 形连接部的方向逐渐变大。
6、 根据权利要求 1-5 中任一所述的超声骨刀刀头， 其特征在于， 还包括刀身， 所述刀 身与所述刀杆相连且所述刀杆和所述刀身的连接处为圆弧过渡， 所述刀身上形成有扳手位。
7、 根据权利要求 1所述的超声骨刀刀头， 其特征在于， 所述刀杆与所述刀头端部一体 形成。
8、 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、 刀杆和所述刀 身一体形成。
9、 根据权利要求 1所述的超声骨刀刀头， 其特征在于， 所述钩形连接部的内侧上所形 成的齿中， 相邻的所述齿的齿间距自钩尖朝向所述钩柄逐渐变大。
10、一种超声骨刀刀头，其特征在于， 包括刀杆和头端， 头端的一端与刀杆的一端连接， 头端为钩形， 钩形包括钩尖、 钩谷和钩柄， 钩谷边缘为齿状。
11、 一种超声骨刀， 其特征在于， 包括如权利要求 1-10中任一所述的超声骨刀刀头。
PCT/CN2014/079580 2013-07-22 2014-06-10 超声骨刀刀头和具有其的超声骨刀 WO2015010506A1 (zh)

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AU2014295671B2 (en) 2017-07-06
US20160128716A1 (en) 2016-05-12
BR112016001234A2 (pt) 2017-09-05

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