WO2018040918A1 - 一种超声骨刀刀头 - Google Patents

一种超声骨刀刀头 Download PDF

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Publication number
WO2018040918A1
WO2018040918A1 PCT/CN2017/097689 CN2017097689W WO2018040918A1 WO 2018040918 A1 WO2018040918 A1 WO 2018040918A1 CN 2017097689 W CN2017097689 W CN 2017097689W WO 2018040918 A1 WO2018040918 A1 WO 2018040918A1
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WO
WIPO (PCT)
Prior art keywords
cutter head
ultrasonic bone
head
cutter
present
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2017/097689
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English (en)
French (fr)
Inventor
孙先泽
战松涛
冯振
曹群
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu SMTP Technology Co Ltd
Original Assignee
Jiangsu SMTP Technology Co Ltd
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 Jiangsu SMTP Technology Co Ltd filed Critical Jiangsu SMTP Technology Co Ltd
Priority to KR2020197000019U priority Critical patent/KR200494004Y1/ko
Priority to ES17845220T priority patent/ES3025259T3/es
Priority to BR212019003904-5U priority patent/BR212019003904Y1/pt
Priority to JP2019600027U priority patent/JP3222599U/ja
Priority to EP17845220.7A priority patent/EP3508147B1/en
Publication of WO2018040918A1 publication Critical patent/WO2018040918A1/zh
Priority to US16/286,709 priority patent/US20190254696A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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
    • 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
    • A61B17/14—Surgical saws
    • A61B17/142—Surgical saws 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
    • A61B17/14—Surgical saws
    • A61B17/142—Surgical saws with reciprocating saw blades, e.g. with cutting edges at the distal end of the saw blades
    • A61B17/144—Surgical saws 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
    • A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
    • A61B17/1637—Hollow drills or saws producing a curved cut, e.g. cylindrical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/16—Instruments for performing osteoclasis; 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
    • 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

  • the present invention relates to the field of medical device equipment, and in particular to an ultrasonic scalpel, and more particularly to an ultrasonic bone cutter head.
  • ultrasonic bone knife In response to the special construction of bone structure, combined with the development of ultrasound technology in recent years, ultrasonic bone knife has gradually become the main tool for modern orthopedic surgery.
  • the often used ultrasonic scalpel blade is a cutting-based cutter head, as shown in Figure 1.
  • most of these cutter heads are mainly straight-shaped.
  • the straight-plate cutter When a hole-opening operation is required on the bone tissue, the straight-plate cutter has poor operability, and the cutter head is broken when used improperly. Danger, which can cause damage to other non-surgical parts. This puts higher requirements on the operation level of the medical staff, increases the physical and mental pressure of the doctor, reduces the success rate of the surgery, and increases the risk of surgery for the patient.
  • the present invention is directed to the above prior art problem, and provides an ultrasonic bone cutter head including a cutter head, a cutter bar and a blade body, one end of the cutter bar being coupled to the cutter head, and the other end of the cutter bar
  • the blade body is connected, wherein the cutter head has a flat plate shape, and the cutter head is bent in an axial direction of the cutter head, and the inner surface of the flat head portion is a flat blade
  • the radius of curvature of the outer surface is the same, and the tip of the cutter head is provided with an arcuate portion.
  • the curved portion is provided on one side of the cutter head.
  • the curved portion is provided with a cutter tooth.
  • the curved portion is provided at the top of the cutter head.
  • the cutter head is provided on one side of the cutter head.
  • the ultrasonic bone cutter head of the present invention preferably, the ultrasonic bone cutter head is a hollow structure.
  • a guide hole is provided at a joint of the cutter bar with the cutter head.
  • a guide groove is provided in the head of the cutter head to communicate with the flow guide hole.
  • the arbor and the blade body are transitioned by a slope or a circular arc.
  • the other end of the blade body is provided with a coupling mechanism for connection with the ultrasonic transducer, and the outer surface of the blade body is provided with a clamping surface for clamping.
  • FIG. 1 is a schematic structural view of a prior art straight-shaped ultrasonic bone cutter head
  • FIG. 2A is a perspective view of a first embodiment of an ultrasonic bone cutter bit according to the present invention.
  • Figure 2B is a front elevational view of the first embodiment of the ultrasonic bone cutter head of the present invention.
  • 2C is a perspective view showing another angle of the first embodiment of the ultrasonic bone cutter head of the present invention.
  • 3A is a perspective view of a second embodiment of an ultrasonic bone cutter head according to the present invention.
  • Figure 3B is a front elevational view of a second embodiment of the ultrasonic bone cutter head of the present invention.
  • 3C is a perspective view showing another angle of the second embodiment of the ultrasonic bone cutter head of the present invention.
  • FIG. 4A is a perspective view of a hollow structure embodiment of an ultrasonic bone cutter head according to the present invention.
  • Figure 4B is a front elevational view showing the hollow structure embodiment of the ultrasonic bone cutter head of the present invention.
  • 4C is a perspective view showing another embodiment of the hollow structure embodiment of the ultrasonic bone cutter bit of the present invention.
  • 4D is a bottom view of the hollow structure embodiment of the ultrasonic bone cutter head of the present invention.
  • 4E is a front elevational view showing the inner hollow structure of the hollow structure embodiment of the ultrasonic bone cutter bit of the present invention.
  • Figure 4F is a left side view of the hollow structure embodiment of the ultrasonic bone cutter head of the present invention.
  • 5A is a perspective view showing another embodiment of a hollow structure of an ultrasonic bone cutter head according to the present invention.
  • Figure 5B is a front elevational view showing another embodiment of the hollow structure of the ultrasonic bone cutter head of the present invention.
  • 5C is a perspective view showing another perspective of another hollow structure embodiment of the ultrasonic bone cutter head according to the present invention.
  • 5D is a front elevational view showing the inner hollow structure of another hollow structural embodiment of the ultrasonic bone cutter bit of the present invention.
  • Figure 5E is a left side elevational view of another hollow structural embodiment of the ultrasonic bone cutter head 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. 2A is a perspective view of a first embodiment of an ultrasonic bone cutter head according to the present invention
  • FIG. 2B is a front view of the first embodiment of the ultrasonic bone cutter head of the present invention
  • FIG. 2C is an ultrasonic bone cutter of the present invention
  • the ultrasonic bone cutter head according to the first embodiment of the ultrasonic bone cutter head of the present invention comprises a cutter head portion 1, a cutter bar 2 and a blade body 3, and one end of the cutter bar 2 It is connected to the cutter head 1 and the other end of the cutter 2 is connected to the blade 3.
  • the shape of the cutter head 1 is a flat plate shape or a flat shape of a micro-cone, and the entire cutter head 1 is axially oriented in the axial direction of the cutter head, and is bent inward at an angle to form the cutter in a flat shape.
  • the inner surface of the head portion 1 and the curved outer surface have the same radius of curvature, that is, the entire sheet-shaped portion of the head portion 1 is curved in the same arc and uniform in thickness.
  • the curvature of the entire cutter head 1 is part of a concentric circle. When cutting, the diameter of the circle in which the head portion 1 of the flat blade is located determines the size of the window.
  • An arcuate portion 4 is provided on one side of the bit head 1 .
  • a knife tooth 5 is opened on the curved portion 4.
  • a plurality of curved grooves may be provided to form a tooth shape.
  • Ultrasonic bone cutter head of the invention 2A to 2C the blade body 3 has a cylindrical shape
  • the blade bar 2 has a cylindrical shape
  • the outer diameter of the blade bar 2 is smaller than the outer diameter of the blade body 3
  • the blade bar 2 and the blade body 3 pass the slope or Smooth transition of the arc.
  • the smooth transition structure effectively prevents stress concentration while preventing sharp corners from damaging the operator and operator.
  • the clamping surface 8 for clamping may be disposed on the blade body 3, so that the operator can conveniently clamp the clamping surface 8 by using the clamping tool, and the ultrasonic bone cutter head of the present invention is rotated. Close to the transducer.
  • the clamping surface 8 is a hex wrench position.
  • FIG. 3A is a perspective view of a second embodiment of an ultrasonic bone cutter head according to the present invention
  • FIG. 3B is a front view of a second embodiment of the ultrasonic bone cutter head according to the present invention
  • FIG. 3C is a view of the ultrasonic bone cutter head of the present invention.
  • the curved portion 4 is provided at the top of the tip portion 1.
  • a tooth 5 is formed on a single side of the bit head 1 and the tooth 5 starts at the end of the curved portion 4. This provides the operator with another way of cutting.
  • FIG. 4A is a perspective view of a hollow structure embodiment of an ultrasonic bone cutter head according to the present invention
  • FIG. 4B is a front view of a hollow structure embodiment of the ultrasonic bone cutter head according to the present invention
  • FIG. 4C is a hollow view of the ultrasonic bone cutter head of the present invention
  • FIG. 4D is a bottom view of the hollow structure embodiment of the ultrasonic bone cutter bit of the present invention
  • FIG. 4E is a view showing the interior of the hollow structure embodiment of the ultrasonic bone cutter bit of the present invention.
  • the front view of the hollow structure Fig. 4F is a left side view of the hollow structure embodiment of the ultrasonic bone cutter head of the present invention. As shown in FIGS.
  • the ultrasonic bone cutter head of the present invention may be provided with a through hole at the center of the cutter head to form a hollow structure, and at the head portion 1 A flow guiding hole 6 is provided at a position where the shank 2 is connected.
  • the flow guiding hole 6 is provided at each of the inner surface and the outer surface of the bit head 1, and the flow guiding hole 6 can ensure the flow of water to the surgical cutting surface of the head of the cutter head, and also has a cooling effect on the cutter head itself.
  • the ultrasonic cutter head made of a hollow structure can also reduce the weight of the cutter head to a certain extent, so that the cutter head structure is smaller and lighter, the grip is more labor-saving, and the operation is more convenient and free.
  • FIG. 5A is a perspective view of another hollow structure embodiment of the ultrasonic bone cutter head of the present invention
  • FIG. 5B is a front view of another hollow structure embodiment of the ultrasonic bone cutter head of the present invention
  • FIG. 5C is an ultrasonic bone cutter of the present invention.
  • FIG. 5D is a perspective view of another hollow structural embodiment of the ultrasonic bone cutter head of the present invention
  • FIG. 5E is another perspective of the ultrasonic bone cutter head of the present invention.
  • the ultrasonic bone cutter head of the present invention is formed into a hollow structure by providing a through hole in the center of the cutter head, and a guide hole is provided at a position where the cutter head 1 is connected to the cutter bar 2. 6, and a guide groove 7 is provided in the head portion 1.
  • the guide groove 7 may be provided only in a part of the bit head 1, as shown in Figs. 5B to 5D.
  • the guide groove 7 can also be extended all the way to the front end of the bit head 1. The presence of the guide trough 7 ensures that a greater amount of water flow is directed to the surgical cut of the head of the cutter head to provide more adequate cooling of the surgical site of the cutter head.
  • the entire head and the contacted tissue are completely in the cleaning and cooling of the perfusion solution in real time, ensuring that the removed bone chips can be discharged more immediately, and the visual field at the incision is more clear and clean, further improving the operation process. Cleaning and cooling effects.
  • a connecting mechanism is provided on the blade body 3.
  • the connecting mechanism is a threaded structure, and the threaded structure may be an external thread or an internal thread.
  • the attachment mechanism is not limited to the threaded structure, as long as any attachment mechanism capable of fixing the ultrasonic bone cutter head of the present invention to the transducer in a detachable manner can be provided in the ultrasonic bone cutter of the present invention.
  • the head of the knife The connecting thread of the blade of the ultrasonic bone cutter head of the present invention is connected to a specific ultrasonic transducer and tightened with a corresponding wrench, and the ultrasonic transducer is connected to a specific ultrasonic host to perform the work.
  • the embodiment of the invention has the advantages that the ultrasonic bone cutter head of the invention can concentrate all the energy generated by the ultrasonic transducer on the front end portion of the knife (the most effective working part), so that the cutter The front end of the knife has the strongest energy output for the strongest working effect.
  • the back side portion of the main cutting portion of the cutter head that is, the back side portion formed with the teeth, adopts a flat or circular arc structure, which can effectively avoid the scratching of the spinal cord when the spinal cord is cut, thereby improving the operation. safety.
  • the ultrasonic bone cutter head is used for osteotomy, the laminar or other bone tissue can be easily and quickly opened, which is suitable for minimally invasive surgery in orthopedic surgery, and can shorten the operation time.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
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  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
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  • Oral & Maxillofacial Surgery (AREA)
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  • Orthopedic Medicine & Surgery (AREA)
  • Surgical Instruments (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

一种超声骨刀刀头，包括刀头头部（1）、刀杆（2）和刀身（3），刀杆（2）的一端和刀头头部（1）连接，刀杆（2）的另一端和刀身（3）连接，其中，刀头头部（1）的形状为扁平片形，刀头头部（1）以刀头轴向方向为轴心弯曲，呈扁平片形的刀头头部（1）的内表面和外表面的曲率半径相同，刀头头部（1）设置有弧形部分。利用超声骨刀刀头进行截骨时，能够很方便快速地进行椎板或者其他骨组织的开圆孔操作，适合于骨科手术中的微创手术，并且能够缩短手术时间，降低刀头意外折断的风险。

Description

一种超声骨刀刀头 技术领域
本发明涉及医疗器械设备领域，特别是涉及一种超声手术刀，尤其是涉及一种超声骨刀刀头。
背景技术
在现代社会中，随着医疗技术的发展，骨科手术呈现多样化趋势，相应地，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。
针对骨骼结构的特殊构造，结合近年来不断发展的超声技术，超声骨刀逐渐成为现代骨科手术的主要工具。在骨科手术中，经常使用的超声骨刀的片形刀头是一种以切割为主的刀头，如图1所示。但是，目前这类刀头多是以直片形为主，当需要在骨组织上进行一个开孔操作时，直形片刀的操作性就会非常差，使用不当还会产生刀头折断的危险，从而伤害到其它非手术部位，造成危险。这对医护人员的操作水平提出了更高的要求，增加了医生的身心压力，降低了手术成功率，提高了患者的手术风险。
发明内容
本发明针对上述现有技术的问题提供一种超声骨刀刀头，包括刀头头部、刀杆和刀身，所述刀杆一端和所述刀头头部连接，所述刀杆另一端和所述刀身连接，其中，所述刀头头部形状为扁平片形，所述刀头头部以刀头轴向方向为轴心弯曲，所述呈扁平片形的刀头头部的内表面和外表面的曲率半径相同，所述刀头头部设置有弧形部分。
根据本发明的超声骨刀刀头，优选为，所述弧形部分设置在所述刀头头部的单侧。
根据本发明的超声骨刀刀头，优选为，在所述弧形部分设置有刀齿。
根据本发明的超声骨刀刀头，优选为，所述弧形部分设置在所述刀头头部的顶部。
根据本发明的超声骨刀刀头，优选为，在所述刀头头部的单侧面设置有刀齿。
根据本发明的超声骨刀刀头，优选为，所述超声骨刀刀头为中空结构。
根据本发明的超声骨刀刀头，优选为，所述刀杆与所述刀头头部连接处设置有导流孔。
根据本发明的超声骨刀刀头，优选为，在所述刀头头部中设置有导流槽，与所述导流孔相连通。
根据本发明的超声骨刀刀头，优选为，所述刀杆和所述刀身之间通过斜面或圆弧过渡。
根据本发明的超声骨刀刀头，优选为，所述刀身的另一端设置连接机构以与超声换能器连接，所述刀身外表面上设置有用于夹持的夹持面。
附图说明
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术的直片形超声骨刀刀头的结构示意图；
图2A为本发明的超声骨刀刀头的第一实施方式的立体示意图；
图2B为本发明的超声骨刀刀头的第一实施方式的主视图；
图2C为本发明的超声骨刀刀头的第一实施方式的另一角度的立体示意图；
图3A为本发明的超声骨刀刀头的第二实施方式的立体示意图；
图3B为本发明的超声骨刀刀头的第二实施方式的主视图；
图3C为本发明的超声骨刀刀头的第二实施方式的另一角度的立体示意图；
图4A为本发明的超声骨刀刀头的中空结构实施例的立体示意图；
图4B为本发明的超声骨刀刀头的中空结构实施例的主视图；
图4C为本发明的超声骨刀刀头的中空结构实施例的另一角度的立体示意图；
图4D为本发明的超声骨刀刀头的中空结构实施例的仰视图；
图4E为本发明的超声骨刀刀头的中空结构实施例的示出了内部中空结构的主视图；
图4F为本发明的超声骨刀刀头的中空结构实施例的左视图；
图5A为本发明的超声骨刀刀头的另一中空结构实施例的立体示意图；
图5B为本发明的超声骨刀刀头的另一中空结构实施例的主视图；
图5C为本发明的超声骨刀刀头的另一中空结构实施例的另一角度的立体示意图；
图5D为本发明的超声骨刀刀头的另一中空结构实施例的示出了内部中空结构的主视图；
图5E为本发明的超声骨刀刀头的另一中空结构实施例的左视图。
附图标记：
1～刀头头部；2～刀杆；3～刀身；4～弧形部分；5～刀齿；6～导流孔；7～导流槽；8～夹持面。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实 施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“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”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
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。
下面通过具体的实施例子并结合附图对本发明做进一步的详细描述。图2A为本发明的超声骨刀刀头的第一实施方式的立体示意图，图2B为本发明的超声骨刀刀头的第一实施方式的主视图，图2C为本发明的超声骨刀刀头的第一实施方式的另一角度的立体示意图。如图2A～图2C所示，本发明的超声骨刀刀头的第一实施例方式所涉及的超声骨刀刀头包括刀头头部1、刀杆2和刀身3，刀杆2的一端和刀头头部1相连接，刀杆2的另一端和刀身3相连接。刀头头部1的形状为扁平片形或微锥扁平片形，整个刀头头部1以刀头轴向方向为轴心，向内弯曲而呈一定角度，呈扁平片形的所述刀头头部1的内表面和所述弧形的外表面的曲率半径相同，也就是说刀头头部1的整个片形部分所弯曲的弧度一致，厚度也一致。整个刀头头部1所呈的弧度作为一个同心圆的一部分。在进行切割时，该呈扁平片形的刀头头部1所在的圆的直径决定了窗口的大小。在刀头头部1的一侧设置有弧形部分4。在弧形部分4上开设有刀齿5。例如可以设置多个弧形凹槽以形成齿状。本发明的超声骨刀刀头 中，也可以如图2A～图2C所示，刀身3呈圆柱体形状，刀杆2呈圆柱体形状，刀杆2外径小于刀身3外径，刀杆2和刀身3之间通过斜面或圆弧平滑过渡。平滑过渡的结构可以有效地防止应力集中，同时防止尖锐边角对接受手术者和操作人员的伤害。另外，也可以是在刀身3上设置有用于进行夹持的夹持面8，如此能够方便操作人员采用夹持工具对夹持面8进行夹持，而将本发明的超声骨刀刀头旋紧在换能器上。优选为，夹持面8是正六角扳手位。
图3A为本发明超声骨刀刀头的第二实施方式的立体示意图，图3B为本发明超声骨刀刀头的第二实施方式的主视图，图3C为本发明超声骨刀刀头的第二实施方式的另一角度的立体示意图。如图3A～图3C所示，作为本发明的第二实施方式所涉及的超声刀刀头，其弧形部分4设置在刀头头部1的顶部。在刀头头部1的单侧面开设有刀齿5，刀齿5起始于弧形部分4的末端。这样能够给操作者提供另一种切割操作方式。
图4A为本发明超声骨刀刀头的中空结构实施例的立体示意图,图4B为本发明超声骨刀刀头的中空结构实施例的主视图,图4C为本发明超声骨刀刀头的中空结构实施例的另一角度的立体示意图,图4D为本发明超声骨刀刀头的中空结构实施例的仰视图,图4E为本发明超声骨刀刀头的中空结构实施例的示出了内部中空结构的主视图,图4F为本发明超声骨刀刀头的中空结构实施例的左视图。如图4A～图4F所示，作为本发明第一实施方式的变形例，本发明的超声骨刀刀头也可以在刀头中心设置贯通孔从而做成中空结构，并在刀头头部1与刀杆2相连接的位置设置导流孔6。导流孔6在刀头头部1的内表面和外表面各设置一个，导流孔6能够确保将水流引导到刀头头部的手术切割面，同时对刀头本身也有冷却作用。手术时，使整个刀头头部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，且能够保护需要保留的组织不被损伤。这样能够使手术风险进一步降低，手术安全性成功率得到提高。做成中空结构的超声刀刀头也可以一定程度上减轻刀头的重量，使得刀头结构更为小巧轻便，握持起来更为省力，操作更加方便自如。
图5A为本发明超声骨刀刀头的另一中空结构实施例的立体示意图，图5B为本发明超声骨刀刀头的另一中空结构实施例的主视图，图5C为本发明超声骨刀刀头的另一中空结构实施例的另一角度的立体示意图，图5D为本发明超声骨刀刀头的另一中空结构实施例的透视图，图5E为本发明超声骨刀刀头的另一中空结构实施例的左视图。如图5A～图5E所示，本发明的超声骨刀刀头通过在刀头中心设置贯通孔从而做成中空结构，在刀头头部1与刀杆2相连接的位置设置有导流孔6，并在刀头头部1设置有导流槽7。导流槽7可以仅设置于刀头头部1的局部，如图5B～5D所示。导流槽7也可以一直延伸设置到刀头头部1的前部顶端。导流槽7的存在能够确保将更加大量的水流引导到刀头头部的手术切割处，为刀头的手术部位提供更加充分的冷却。手术时，使整个刀头头部和接触到的组织实时地完全处于灌注液的清洗和冷却中，确保被切除的骨屑能够更加即时地排出，切口处视野更加清晰洁净，进一步提高手术过程中的清洗和冷却效果。
本发明的超声骨刀刀头中，在刀身3设置有连接机构。优选地，该连接机构为螺纹结构，该螺纹结构可以是外螺纹也可以是内螺纹。当然连接机构并不仅局限于螺纹结构，只要是能够将本发明的超声骨刀刀头以一种可拆卸的方式固定在换能器上的任何连接机构都可设置在本发明的超声骨刀刀头的刀身上。将本发明的超声骨刀刀头的刀身的连接螺纹与特定的超声换能器连接，并用相应的扳手拧紧，再将超声换能器连接于特定的超声主机，即可进行工作。
与现有技术相比，本发明实施例的优点在于：本发明中的超声骨刀刀头可以将超声换能器所产生的能量全部汇聚于刀前端部分(最有效的工作部分)，使刀具的刀前端部分具有最强的能量输出，达到最强的工作效果。刀头头部主切割部分的背侧部分，也即形成有刀齿的背侧部分采用平面或圆弧形结构，能够有效避免绕过脊髓切割时对脊髓造成的刮划，从而提高了手术的安全性。使用该超声骨刀刀头进行截骨时，能够很方便快速的进行椎板或者其他骨组织开圆孔操作，适合于骨科手术中的微创手术，能够缩短手术时间。
以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前 述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施方式所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施方式技术方案的范围。

Claims (10)

  1. 一种超声骨刀刀头，包括刀头头部、刀杆和刀身，所述刀杆的一端和所述刀头头部连接，所述刀杆的另一端和所述刀身连接，其特征在于，
    所述刀头头部形状为扁平片形，所述刀头头部以刀头轴向方向为轴心弯曲，所述呈扁平片形的刀头头部的内表面和外表面的曲率半径相同，所述刀头头部设置有弧形部分。
  2. 根据权利要求1所述的超声骨刀刀头，其特征在于，
    所述弧形部分设置在所述刀头头部的单侧。
  3. 根据权利要1或2所述的超声骨刀刀头，其特征在于，
    在所述弧形部分设置有刀齿。
  4. 根据权利要求1所述的超声骨刀刀头，其特征在于，
    所述弧形部分设置在所述刀头头部的顶部。
  5. 根据权利要求1、2或4所述的超声骨刀刀头，其特征在于，
    在所述刀头头部的单侧面设置有刀齿。
  6. 根据权利要求1、2或4所述的超声骨刀刀头，其特征在于，
    所述超声骨刀刀头为中空结构。
  7. 根据权利要求6所述的超声骨刀刀头，其特征在于，
    所述刀杆与所述刀头头部连接处设置有导流孔。
  8. 根据权利要求7所述的超声骨刀刀头，其特征在于，
    在所述刀头头部中设置有导流槽，与所述导流孔相连通。
  9. 根据权利要求1、2、4、7或8所述的超声骨刀刀头，其特征在于，
    所述刀杆和所述刀身之间通过斜面或圆弧过渡。
  10. 根据权利要求1、2、4、7或8所述的超声骨刀刀头，其特征在于，
    所述刀身的另一端设置连接机构以与超声换能器连接，所述刀身外表面上设置有用于夹持的夹持面。
PCT/CN2017/097689 2016-08-31 2017-08-16 一种超声骨刀刀头 Ceased WO2018040918A1 (zh)

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