WO2018040917A1 - 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
WO2018040917A1
WO2018040917A1 PCT/CN2017/097687 CN2017097687W WO2018040917A1 WO 2018040917 A1 WO2018040917 A1 WO 2018040917A1 CN 2017097687 W CN2017097687 W CN 2017097687W WO 2018040917 A1 WO2018040917 A1 WO 2018040917A1
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WO
WIPO (PCT)
Prior art keywords
cutter head
flat structure
head
ultrasonic bone
cutter
Prior art date
Application number
PCT/CN2017/097687
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English (en)
French (fr)
Inventor
李维新
战松涛
曹群
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江苏水木天蓬科技有限公司
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Application filed by 江苏水木天蓬科技有限公司 filed Critical 江苏水木天蓬科技有限公司
Priority to BR212019003902U priority Critical patent/BR212019003902U2/pt
Priority to JP2019600026U priority patent/JP3222598U/ja
Priority to KR2020197000018U priority patent/KR20190001033U/ko
Priority to EP17845219.9A priority patent/EP3508146A1/en
Publication of WO2018040917A1 publication Critical patent/WO2018040917A1/zh
Priority to US16/283,974 priority patent/US20190183521A1/en

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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
    • A61B17/32—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
    • A61B17/16—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
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1604—Chisels; Rongeurs; Punches; Stamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/1615—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, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1644—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans using fluid other than turbine drive fluid
    • 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
    • A61B2017/320004—Surgical cutting instruments abrasive
    • A61B2017/320008—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
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320072—Working tips with special features, e.g. extending parts
    • A61B2017/320073—Working tips with special features, e.g. extending parts probe
    • 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
    • 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
    • A61B2017/320077—Working tips with special features, e.g. extending parts blade double edge blade, e.g. reciprocating
    • 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
    • A61B2017/320084—Irrigation sleeves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2217/00—General characteristics of surgical instruments
    • A61B2217/002—Auxiliary appliance
    • A61B2217/007—Auxiliary appliance with irrigation system

Definitions

  • the invention belongs to the technical field of medical instruments, and in particular relates to an ultrasonic bone cutter head.
  • the ultrasonic scalpel is mainly used for grinding the blade head, which is mainly composed of a spherical structure, as shown in Fig. 1.
  • the ultrasonic bone cutter head can meet a part of the grinding requirements, in some occasions, such as the polishing of the lumbar intervertebral disc end plate, the bone grinding work cannot be completed better due to limited space.
  • the present invention has devised an ultrasonic bone cutter head which can be inserted into a small bone seam system for single-side or double-side grinding to enlarge the exposed area.
  • the ultrasonic bone cutter head of the present invention comprises a cutter head, a cutter bar and a cutter tail, one end of the cutter bar is connected with the cutter head, and the other end of the cutter bar Connecting with the cutter tail, wherein the cutter head is a flat structure, and the front end surface of the flat structure is a smooth circular arc surface structure, and the upper surface or the upper and lower surfaces of the flat structure are disposed
  • the knurling extends from the front end of the flat structure toward the shank and covers the flat structure to form a planar ⁇ -shaped cutter head.
  • the upper and lower surfaces of the flat structure are When the knurling is set, the upper surface and the lower surface of the flat structure are knurled with different tooth shapes, or knurls having the same tooth shape but different depths and different tooth pitches.
  • the upper surface and the lower surface of the flat structure are parallel, or both the upper surface and the lower surface are inclined at an angle such that the flat structure The front end is thin and then extends toward the arbor and gradually thickens.
  • the flat structure is an elliptical flat structure or a rectangular flat structure, and a side surface of the elliptical flat structure is a smooth circular arc surface structure.
  • the upper surface of the flat structure of the cutter head and the shank smoothly transition through the curved surface.
  • the cutter head portion is connected to the cutter bar through a thin cylindrical connecting portion, and an outer diameter of the thin cylindrical connecting portion is smaller than an outer diameter of the cutter bar.
  • the upper and lower surfaces of the flat structure of the cutter head head are smoothly transitioned by a straight plane and the thin cylindrical connecting portion, respectively, the thin cylindrical connecting portion and the The shank is smoothly connected by a circular arc.
  • the cutter bar and the cutter tail are smoothly connected by a circular arc surface, and the other end of the cutter tail is provided with a connecting thread to be connected with the ultrasonic transducer.
  • the connecting thread is an in-line connecting thread
  • the outer surface of the knife tail is further provided with a hex wrench position.
  • the ultrasonic bone cutter head of the present invention preferably, the ultrasonic bone cutter head is an integral structure Or a split assembly structure.
  • the cutter tail is coupled to the ultrasonic host through an ultrasonic transducer.
  • the rear connecting end of the cutter head, the cutter bar and the cutter tail are both hollow structures and communicate with each other, and the head of the cutter head
  • the orifice has one and is located at the rear of the upper surface or the lower surface of the flat structure of the cutter head, or there are two orifices on the head of the cutter head, respectively located at the flat head structure of the cutter head The upper surface and the lower surface of the back.
  • the present invention has a simple structure and is easy to process.
  • the tip end portion of the cutter head of the present invention adopts a smooth circular arc surface structure to avoid scratching of the soft tissue by the tip end, thereby improving safety.
  • the present invention adopts a flat boring cutter head, and various types of dents can be used; when the two sides are opened, the tooth profile or the dent tooth depth of the two sides and the molar size can be different, which can be applied to more In the occasion, it is convenient to use.
  • the present invention can be inserted into a small bone suture system for single-side or double-side grinding, and the connection between the head of the cutter head and the cutter bar makes the field of vision open during surgery.
  • the ultrasonic bone cutter head of the present invention has a hollow structure, and the orifice on the head of the cutter head is located at the rear of the flat structure of the cutter head, thereby ensuring that the perfusate flows out from the rear surface of the cutter head.
  • the entire head and the contacted tissue are completely in the cleaning and cooling of the perfusate in real time, ensuring that the removed bone chips are immediately discharged, the visual field at the incision is clear and clean, and the remaining tissue to be retained is protected. The damage is particularly evident during the grinding operation, which further reduces the risk of surgery and improves the safety and success rate of the operation.
  • FIG. 1 is a schematic structural view of a prior art spherical cutter head
  • FIG. 2 is a perspective view of a first embodiment of an ultrasonic bone cutter head of the present invention
  • Figure 3 is a front elevational view of the first embodiment of the ultrasonic bone cutter head of the present invention.
  • Figure 4 is a bottom plan view of the first embodiment of the ultrasonic bone cutter head of the present invention.
  • Figure 5 is a perspective view of a second embodiment of the ultrasonic bone cutter head of the present invention.
  • Figure 6 is a front elevational view of a second embodiment of the ultrasonic bone cutter head of the present invention.
  • Figure 7 is a plan view of a second embodiment of the ultrasonic bone cutter head of the present invention.
  • Figure 8 is a perspective view showing a third embodiment of the ultrasonic bone cutter head of the present invention.
  • Figure 9 is a front elevational view of a third embodiment of the ultrasonic bone cutter head of the present invention.
  • Figure 10 is a bottom plan view of a third embodiment of the ultrasonic bone cutter head of the present invention.
  • Figure 11 is a rear elevational view of a third embodiment of the ultrasonic bone cutter head of the present invention.
  • Figure 12 is a perspective view showing a fourth embodiment of the ultrasonic bone cutter head of the present invention.
  • Figure 13 is a front elevational view of a fourth embodiment of the ultrasonic bone cutter head of the present invention.
  • Figure 14 is a bottom plan view of a fourth embodiment of the ultrasonic bone cutter head of the present invention.
  • Figure 15 is a rear elevational view of a fourth 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. 2 is a perspective view of a first embodiment of an ultrasonic bone cutter head according to the present invention
  • FIG. 3 is a front view of the first embodiment of the ultrasonic bone cutter head of the present invention
  • FIG. 4 is an ultrasonic bone cutter of the present invention.
  • the ultrasonic bone cutter head according to the first embodiment of the present invention includes a cutter head portion 1, a cutter bar 2, and a cutter tail 3.
  • One end of the cutter bar 2 is connected to the cutter head 1 and the other end of the cutter bar 2 is connected to the cutter tail 3, and the cutter tail 3 is connected to a specific ultrasonic host through an ultrasonic transducer.
  • the cutter head portion 1 has a flat structure.
  • the cutter head portion 1 has a rectangular flat structure.
  • the front end face of the flat structure, that is, the tip end portion is a circular arc surface structure 12, and the circular arc surface structure 12 is processed into a smooth surface to prevent scratching of the soft tissue.
  • a knurling 11 is provided on the upper surface or the upper and lower surfaces of the flat structure, and the knurling 11 extends from the front end of the flat structure toward the arbor direction to cover the flat structure to form a flat knives.
  • the knurling that is, the molars
  • the knurling can be single-toothed, double-toothed, or commonly used.
  • the tooth profiles of the two sides can be different.
  • the tooth shape may be the same but the tooth depth and the molar size are different. This makes it easy to apply in more situations.
  • Both the upper surface and the lower surface of the flat structure may be parallel or may have an angle of taper.
  • the front end of the flat structure is thin, and then extends toward the arbor and gradually thickens, thereby forming a front thin and thick "blade" structure, so as to be able to protrude into a small bone joint.
  • Perform a grinding operation The shank 2 and the shank 3 are connected by a circular arc surface transition.
  • the other end of the shank 3 is provided with a connecting thread 31 for connecting with the ultrasonic transducer.
  • the connecting thread 31 is designed as an in-line connecting thread, and the outer surface of the shank 3 is also provided with a hex wrench position 32.
  • the cutter head 1 and the cutter bar 2 may be of a unitary structure or a split combination structure.
  • the cutter head 1 and the cutter bar 2 are of a unitary structure, and the upper surface of the flat structure and the cutter bar 2 smoothly transition through the curved surface.
  • the shank 2 and the shank 3 may be of a unitary structure or a split assembly structure.
  • the shank 2 and the shank 3 are of a unitary structure and are machined from a cylindrical stepped rod.
  • the ultrasonic bone cutter head of the present invention is connected to a specific ultrasonic transducer through a connecting thread 31 of its cutter tail 3, and is tightened with a corresponding wrench, and then the ultrasonic transducer is connected to a specific ultrasonic transducer.
  • the ultrasound host can work.
  • Figures 5 to 7 show a second embodiment of the ultrasonic bone cutter bit of the present invention.
  • Figure 5 is a perspective view of a second embodiment of the ultrasonic bone cutter head of the present invention
  • Figure 6 is a front view of the second embodiment of the ultrasonic bone cutter head of the present invention
  • Figure 7 is an ultrasonic bone cutter of the present invention.
  • the cutter head 1 is an elliptical flat structure, and the side surface of the elliptical flat structure is processed into a smooth circular arc surface. Structure 12 prevents the side edges from scratching the soft tissue.
  • the cutter head portion 1 is connected to the cutter bar 2 via the thin cylindrical connecting portion 4, and the outer diameter of the thin cylindrical connecting portion 4 is smaller than the outer diameter of the cutter bar 2, and such a shape is more advantageous for the visual field at the time of surgery.
  • the upper and lower surfaces of the elliptical flat structure are smoothly transitioned by the straight plane and the thin cylindrical joint portion 4, so that the flexible use of the cutter head portion is unimpeded, and the thin cylindrical joint portion 4 and the cutter bar 2 are connected by a circular arc surface transition.
  • the thin cylindrical connecting portion 4 and the shank 2 may be a one-piece structure or a split-type assembled structure.
  • the thin cylindrical connecting portion 4 and the shank 2 are of a unitary structure, and are processed by a cylindrical stepped rod. to make.
  • FIG. 8 to 11 show a second embodiment of the ultrasonic bone cutter head of the present invention.
  • Figure 8 is a perspective view of a third embodiment of the ultrasonic bone cutter head of the present invention
  • Figure 9 is a front view of a third embodiment of the ultrasonic bone cutter head of the present invention
  • Figure 10 is an ultrasonic bone cutter of the present invention.
  • Figure 11 is a rear elevational view of a third embodiment of the ultrasonic bone cutter head of the present invention.
  • the ultrasonic bone cutter head according to the third embodiment of the present invention is substantially identical to the ultrasonic bone cutter head according to the first embodiment of the present invention, except that the head portion 1 has a flat structure.
  • the rear connecting end, the shank 2 and the shank 3 are both hollow structures and communicate with each other.
  • the opening 5 on the head 1 of the cutter head is located at the rear of the upper surface of the flat structure to ensure timely removal of the removed bone chips. .
  • the perfusate flows out from the posterior surface of the cutter head 1 during operation, so that the entire cutter head 1 and the contacted tissue are completely in the cleaning and cooling of the perfusate in real time, ensuring being The excised bone fragments are discharged in time, the visual field at the incision is clear and clean, and the remaining tissue is protected from damage. This is particularly evident during the grinding operation, which further reduces the risk of surgery and improves the safety and success rate of the operation.
  • FIG. 12 to 15 show a fourth embodiment of the ultrasonic bone cutter bit of the present invention.
  • Figure 12 is a perspective view showing a fourth embodiment of the ultrasonic bone cutter head of the present invention
  • Figure 13 is a front view of the fourth embodiment of the ultrasonic bone cutter head of the present invention
  • Figure 14 is an ultrasonic bone cutter of the present invention.
  • a bottom view of a fourth embodiment of the head, and Figure 15 is a rear elevational view of a fourth embodiment of the ultrasonic bone cutter head of the present invention.
  • the ultrasonic bone cutter head according to the fourth embodiment of the present invention is substantially identical to the ultrasonic bone cutter head of the first embodiment of the present invention, except that the flat head structure of the cutter head 1 is The rear connecting end, the shank 2 and the shank 3 are hollow structures and communicate with each other, and there are two holes 5 on the head 1 of the cutter head.
  • the two orifices 5 are respectively located at the rear of the upper and lower surfaces of the flat structure of the cutter head 1. Since there are two upper and lower water outlets 5, the visual field of the incision can be clearly cleaned in any cutting operation, and it is more advantageous to protect the remaining tissue from being damaged. In addition, a water outlet is blocked or blocked during the operation. When it is blocked, the other can also ensure the full flow of the liquid. Further, the two orifices 5 effluent to make the flow more complete to the tissue. Therefore, the design of such a double outlet orifice makes the risk of surgery further reduced, and the safety and success rate of the operation are further improved.
  • the ultrasonic bone cutter head of the invention can concentrate the energy generated by the ultrasonic transducer on the head of the cutter head (the most effective working part), so that the cutter head portion of the cutter has the strongest energy output. To achieve the strongest working effect, and the invention is easy to process.
  • the tip end portion of the cutter head of the present invention adopts a smooth circular arc surface structure to avoid scratching of the soft tissue by the tip end, thereby improving safety.
  • the invention adopts a flat boring cutter head, and various types of dents can be used. When the two sides are opened, the tooth depth and the molar size of the two sides can be different, which can be applied to more occasions and is convenient to use.

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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)
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  • Animal Behavior & Ethology (AREA)
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  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Mechanical Engineering (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)和刀尾(3)，刀杆(2)一端和刀头头部(1)连接，刀杆(2)另一端和刀尾(3)连接，刀尾(3)通过超声换能器与超声主机连接，刀头头部(1)是扁平状结构，扁平状结构的前端端面是光滑的圆弧面结构，扁平状结构的上表面或上、下表面设置滚花(11)，滚花(11)从扁平状结构的前端开始向刀杆(2)方向延伸并覆盖扁平状结构以形成平面锉形刀头。超声骨刀刀头能够伸入很小骨缝系中进行单侧或双侧打磨，结构简单、易于加工、使用方便、安全性高。

Description

一种超声骨刀刀头 技术领域
本发明属于医疗器械技术领域，具体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，在实施手术时，需要针对不同的骨科病情采用不同形状的手术刀头对患处进行切割、磨削、刮疗、夹持等操作。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。目前的超声骨刀用于打磨的刀头多以球形结构为主，如图1所示。这种超声骨刀刀头虽然能够满足一部分打磨需求，但是在某些场合，如腰椎间盘终板打磨等，由于空间有限，无法更好地完成磨骨工作。
发明内容
为了解决上述存在的技术问题，本发明设计了一种超声骨刀刀头，该刀头能够伸入很小骨缝系中进行单侧或双侧打磨，扩大暴露面积。
为了解决上述存在的技术问题，本发明的超声骨刀刀头包括刀头头部、刀杆和刀尾，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尾连接，其中，所述刀头头部是扁平状结构，所述扁平状结构的前端端面是光滑的圆弧面结构，所述扁平状结构的上表面或上、下表面设置滚花，所述滚花从所述扁平状结构的前端开始向刀杆方向延伸并覆盖所述扁平状结构以形成平面锉形刀头。
本发明的超声骨刀刀头中，优选为，所述扁平状结构上、下表面均 设置滚花时，所述扁平状结构上表面和下表面采用不同齿形的滚花，或者采用虽然齿形相同但深度不同、齿距不同的滚花。
本发明的超声骨刀刀头中，优选为，所述扁平状结构的上表面和下表面二者平行，或者是上表面和下表面二者相对倾斜有一夹角，使得所述扁平状结构的前端部薄，然后向刀杆方向延伸并逐渐加厚。
本发明的超声骨刀刀头中，优选为，所述扁平状结构是椭圆形扁平状结构或矩形扁平状结构，所述椭圆形扁平状结构的侧面是光滑的圆弧面结构。
本发明的超声骨刀刀头中，优选为，所述刀头头部扁平状结构的上表面和刀杆通过曲面平滑过渡。
本发明的超声骨刀刀头中，优选为，所述刀头头部通过细柱状连接部与所述刀杆连接，所述细柱状连接部的外径小于所述刀杆的外径。
本发明的超声骨刀刀头中，优选为，所述刀头头部扁平状结构的上、下表面分别通过直平面和所述细柱状连接部平滑过渡，所述细柱状连接部和所述刀杆通过圆弧面平滑过渡连接。
本发明的超声骨刀刀头中，优选为，所述刀杆和所述刀尾通过圆弧面平滑过渡连接，所述刀尾的另一端设置连接螺纹以与超声换能器连接。
本发明的超声骨刀刀头中，优选为，所述连接螺纹为内嵌式连接螺纹，所述刀尾外表面上还设置有正六角扳手位。
本发明的超声骨刀刀头中，优选为，该超声骨刀刀头是一体式结构 或者是分体式组装结构。
本发明的超声骨刀刀头中，优选为，所述刀尾通过超声换能器与超声主机连接。
本发明的超声骨刀刀头中，优选为，所述刀头头部的后部连接端、所述刀杆和所述刀尾均为中空结构，相互连通，所述刀头头部上的孔口有一个且位于所述刀头头部扁平状结构的上表面或下表面后部，或者所述刀头头部上的孔口有两个，分别位于所述刀头头部扁平状结构的上表面和下表面后部。
该超声骨刀刀头具有以下有益效果：
(1)本发明结构简单、易于加工。
(2)本发明刀头头部的刀尖部分采用光滑圆弧面结构，避免尖端对软组织的刮划，提高了安全性。
(3)本发明采用平面锉形刀头，可采用各种形式的锉齿；两面开齿时，两面的锉齿齿形或锉齿齿深和锉齿大小可以不同，这样可适用于更多的场合中，使用方便。
(4)本发明能够伸入很小骨缝系中进行单侧或双侧打磨，刀头头部与刀杆的连接方式使得手术时视野开阔。
(5)本发明的超声骨刀刀头为中空结构，刀头头部上的孔口位于刀头头部扁平状结构的后部，可确保灌注液由刀头头部的后部表面流出，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，且保护剩余的需要保留的组织不被损伤，在磨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。
附图说明
图1为现有技术的球形刀头的结构示意图；
图2为本发明的超声骨刀刀头的第一实施例的立体示意图；
图3为本发明的超声骨刀刀头的第一实施例的主视图；
图4为本发明的超声骨刀刀头的第一实施例的仰视图；
图5为本发明的超声骨刀刀头的第二实施例的立体示意图；
图6为本发明的超声骨刀刀头的第二实施例的主视图；
图7为本发明的超声骨刀刀头的第二实施例的俯视图；
图8为本发明的超声骨刀刀头的第三实施例的立体示意图；
图9为本发明的超声骨刀刀头的第三实施例的主视图；
图10为本发明的超声骨刀刀头的第三实施例的仰视图；
图11为本发明的超声骨刀刀头的第三实施例的后视图；
图12为本发明的超声骨刀刀头的第四实施例的立体示意图；
图13为本发明的超声骨刀刀头的第四实施例的主视图；
图14为本发明的超声骨刀刀头的第四实施例的仰视图；
图15为本发明的超声骨刀刀头的第四实施例的后视图。
附图标记：
1～刀头头部；11～滚花；12～圆弧面结构；2～刀杆；3～刀尾；31～连接螺纹；32～扳手位；4～细柱状连接部；5～孔口。
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并结合附图对本发明做进一步的详细描述。图2为本发明的超声骨刀刀头的第一实施例的立体示意图,图3为本发明的超声骨刀刀头的第一实施例的主视图,图4为本发明的超声骨刀刀头的第一实施例的仰视图。如图2～图4所示，本发明第一实施例的超声骨刀刀头包括刀头头部1、刀杆2和刀尾3。刀杆2的一端和刀头头部1连接，刀杆2的另一端和刀尾3连接，刀尾3通过超声换能器与特定的超声主机连接。
如图2～图4所示，刀头头部1是扁平状结构，本发明第一实施例的超声骨刀刀头中，刀头头部1是矩形的扁平状结构。扁平状结构的前端端面也即刀尖部分是圆弧面结构12，圆弧面结构12加工成光滑面以防止刮伤软组织。在扁平状结构的上表面或上、下表面设置滚花11，滚花11从扁平状结构的前端开始向刀杆方向延伸，覆盖扁平状结构以形成平面锉形刀头。滚花也即锉齿可以是单齿、双齿、或常用锉齿齿形。在该平面锉形刀头两面通过滚花开齿时，两面的锉齿齿形可以不同。或者，也可以是，齿形相同但锉齿齿深和锉齿大小不同。这样便于应用在更多的场合中。扁平状结构的上表面和下表面二者可以是平行的，也可以是有一定锥度夹角的。当扁平状结构的上表面和下表面二者有一定锥度的夹 角时，显现出来就是扁平状结构的前端部薄，然后向刀杆方向延伸并逐渐加厚，从而形成前薄后厚的“刀刃”结构，以便于能够伸入到很小的骨头缝系中进行打磨操作。刀杆2和刀尾3通过圆弧面过渡连接。在刀尾3的另一端设置有连接螺纹31以与超声换能器连接，本实施例中连接螺纹31设计为内嵌式连接螺纹，刀尾3外表面上还设置有正六角扳手位32以便于进行紧固操作。刀头头部1和刀杆2可以是一体式结构，也可以是分体式组合结构。本实施例中刀头头部1和刀杆2是一体式结构，扁平状结构的上表面和刀杆2通过曲面平滑过渡。刀杆2和刀尾3可以是一体式结构，也可以是分体式组装结构。本实施例中刀杆2和刀尾3是一体式结构，由一圆柱形的阶梯状杆加工而成。
本发明的超声骨刀刀头在工作时，将该刀头通过其刀尾3的连接螺纹31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。
图5至图7示出了本发明的超声骨刀刀头的第二实施例。图5为本发明的超声骨刀刀头的第二实施例的立体示意图，图6为本发明的超声骨刀刀头的第二实施例的主视图，图7为本发明的超声骨刀刀头的第二实施例的俯视图。如图5～图7所示，本发明第二实施例的超声骨刀刀头中，刀头头部1是椭圆形的扁平状结构，椭圆形扁平状结构的侧面加工成光滑的圆弧面结构12以防止侧面边缘刮伤软组织。刀头头部1通过细柱状连接部4与刀杆2连接，细柱状连接部4的外径小于刀杆2的外径，这样的形状对手术时的视野更加有利。椭圆形扁平状结构的上下表面通过直平面和细柱状连接部4平滑过渡，以利于刀头头部的灵活使用不受阻碍，细柱状连接部4和刀杆2通过圆弧面过渡连接。细柱状连接部4和刀杆2可以是一体式结构，也可以是分体式组装结构，本实施例里细柱状连接部4和刀杆2是一体式结构，由一圆柱形的阶梯杆加工而成。
图8至图11示出了本发明的超声骨刀刀头的第二实施例。图8为本发明的超声骨刀刀头的第三实施例的立体示意图，图9为本发明的超声骨刀刀头的第三实施例的主视图，图10为本发明的超声骨刀刀头的第三实施例的仰视图，图11为本发明的超声骨刀刀头的第三实施例的后视图。如图8～图11所示，本发明第三实施例的超声骨刀刀头中与本发明第一实施例的超声骨刀刀头基本一致，不同之处在于刀头头部1扁平状结构的后部连接端、刀杆2和刀尾3均为中空结构，相互连通，刀头头部1上的孔口5位于扁平状结构的上表面后部，可确保被切除的骨屑及时排出。当使用灌注液时，可确保灌注液由刀头头部1的后部表面流出，手术时使整个刀头头部1和接触到的组织实时的完全处于灌注液的清洗和冷却中，确保被切除的骨屑及时排出，切口处视野清晰洁净，且保护剩余的要保留组织不被损伤。在磨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。
图12至图15示出了本发明的超声骨刀刀头的第四实施例。图12为本发明的超声骨刀刀头的第四实施例的立体示意图，图13为本发明的超声骨刀刀头的第四实施例的主视图，图14为本发明的超声骨刀刀头的第四实施例的仰视图，图15为本发明的超声骨刀刀头的第四实施例的后视图。如图12至图15所示，本发明第四实施例的超声骨刀刀头与本发明第一实施例的超声骨刀刀头基本一致，不同之处在于刀头头部1的扁平状结构的后部连接端、刀杆2和刀尾3为中空结构，相互连通，刀头头部1上的孔口5有两个。两个孔口5分别位于刀头头部1扁平状结构的上、下表面的后部。由于有上下两处出水孔口5，因此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，另外，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。进一步，两个孔口5出水使液流流至组织更加充分。因此，这样的双出水孔口的设计使得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。
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头头部(最有效的工作部分)，使刀具的刀前端部分刀头头部具有最强的能量输出，达到最强的工作效果，且本发明易于加工。另外，本发明的刀头头部的尖端部分采用光滑圆弧面结构，避免尖端对软组织的刮划，提高了安全性。本发明采用平面锉形刀头，可采用各种形式的锉齿，两面开齿时，两面的锉齿齿深和锉齿大小可以不同，这样可适用于更多的场合中，使用方便。
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例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例技术方案的范围。

Claims (10)

  1. 一种超声骨刀刀头，包括刀头头部、刀杆和刀尾，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尾连接，其特征在于，
    所述刀头头部是扁平状结构，所述扁平状结构的前端端面是光滑的圆弧面结构；所述扁平状结构的上表面或上、下表面设置滚花，所述滚花从所述扁平状结构的前端开始向所述刀杆方向延伸，覆盖所述扁平状结构以形成平面锉形刀头。
  2. 根据权利要求1所述的超声骨刀刀头，其特征在于，
    所述扁平状结构上、下表面均设置滚花时，所述扁平状结构上表面和下表面的滚花采用不同齿形，或者滚花虽然相同齿形但不同深度、不同齿距。
  3. 根据权利要求1或2所述的超声骨刀刀头，其特征在于，
    所述扁平状结构的上表面和下表面二者平行，或者是上表面和下表面二者相对倾斜有一夹角，使得所述扁平状结构的前端部薄，然后向刀杆方向延伸并逐渐加厚。
  4. 根据权利要求3所述的超声骨刀刀头，其特征在于，
    所述扁平状结构是椭圆形扁平状结构或矩形扁平状结构，所述椭圆形扁平状结构的侧面是光滑的圆弧面结构。
  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，
    所述刀头头部扁平状结构的上表面和所述刀杆通过曲面平滑过渡。
  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，
    所述刀头头部通过细柱状连接部与所述刀杆连接，所述细柱状连接部的外径小于所述刀杆的外径。
  7. 根据权利要求6所述的超声骨刀刀头，其特征在于，
    所述刀头头部扁平状结构的上、下表面分别通过直平面和所述细柱状连接部平滑过渡，所述细柱状连接部和所述刀杆通过圆弧面平滑过渡连接。
  8. 根据权利要求1、2、4或7所述的超声骨刀刀头，其特征在于，
    所述刀杆和所述刀尾通过圆弧面平滑过渡连接，所述刀尾的另一端设置连接螺纹以与超声换能器连接。
  9. 根据权利要求8所述的超声骨刀刀头，其特征在于，
    所述连接螺纹为内嵌式连接螺纹，所述刀尾外表面上还设置有正六角扳手位。
  10. 根据权利要求1、2、4、7或9所述的超声骨刀刀头，其特征在于，
    所述刀头头部的后部连接端、所述刀杆和所述刀尾均为中空结构，并且相互连通，所述刀头头部上的孔口有一个且位于所述刀头头部扁平状结构的上表面或下表面后部，或者所述刀头头部上的孔口有两个，分别位于所述刀头头部扁平状结构的上表面和下表面后部。
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US20190183521A1 (en) 2019-06-20
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