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WO2018153249A1 - 一种超声刀刀头 - Google Patents

一种超声刀刀头 Download PDF

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Publication number
WO2018153249A1
WO2018153249A1 PCT/CN2018/075445 CN2018075445W WO2018153249A1 WO 2018153249 A1 WO2018153249 A1 WO 2018153249A1 CN 2018075445 W CN2018075445 W CN 2018075445W WO 2018153249 A1 WO2018153249 A1 WO 2018153249A1
Authority
WO
WIPO (PCT)
Prior art keywords
ultrasonic
blade
cutter head
scalpel
head according
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/CN2018/075445
Other languages
English (en)
French (fr)
Inventor
周一新
曹群
战松涛
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 JP2019600173U priority Critical patent/JP3225095U/ja
Priority to KR2020197000071U priority patent/KR200494036Y1/ko
Priority to DE212018000161.8U priority patent/DE212018000161U1/de
Publication of WO2018153249A1 publication Critical patent/WO2018153249A1/zh
Priority to AU2019100930A priority patent/AU2019100930A4/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • A61B17/32—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
    • A61B17/3209—Incision instruments
    • A61B17/3211—Surgical scalpels, knives; Accessories therefor
    • 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
    • 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
    • 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
    • A61B2017/320078—Tissue manipulating surface

Definitions

  • the invention belongs to the technical field of medical instruments, and in particular relates to an ultrasonic knife head.
  • the ultrasonic cutter head used for perforating in the operation is mainly a needle-shaped cutter head and an umbrella-shaped cutter head, and the umbrella-shaped cutter head is shown in FIG.
  • These cutter heads can only punch the tissue by straight puncturing. It requires a large downward pressure during use, is inefficient and difficult to control, and is easy to injure the body and cause medical accidents.
  • the present invention designs an ultrasonic cutter head which adopts a spiral blade and has a chip evacuation hole, which can quickly, safely and labor-savingly assist the doctor to perform the required punching operation.
  • the present invention provides an ultrasonic cutter head including a cutter head end, a cutter bar and a blade body, one end of the cutter bar being connected to the cutter head end, the cutter bar The other end is coupled to the blade body, wherein the body of the tip end of the cutter head is of a cylindrical structure, the front end of which is gathered, and a single or a plurality of spiral blades start from the foremost end of the end of the cutter head, along the The end of the cutter head is spirally arranged to form a cutting portion.
  • the front end of the cylindrical structure is a conical tip
  • the cone bottom diameter of the conical tip is larger than the diameter of the cylindrical structure, the single or multiple spiral blades Starting from the foremost end of the conical tip, a cutting portion is formed by spirally setting along the conical tip.
  • the cylindrical structure and the conical tip are smoothly connected by a bevel or a circular arc surface.
  • the cutting edge of the spiral blade has a square blade or a sharp edge structure.
  • the cutting portion of the end portion of the cutter head is processed with a plurality of chip evacuation holes or chip flutes, and the plurality of chip flute holes or chip flutes along the cutting portion Weekly uniformity.
  • the axial center line of the chip evacuation hole or the chip flute is parallel to the axial center line of the tip end portion.
  • the cutter bar has a hollow structure, and the hollow portion extends up to the front end of the end portion of the cutter head, and the side of the cylindrical structure or the side of the cut portion at the end portion of the cutter head Or the front end, with a water injection hole.
  • a smooth transitional connection between the arbor and the blade end between the shank and the blade body is performed by a slope or a circular arc surface.
  • the other end of the blade body is connected to a specific ultrasonic host through an ultrasonic transducer, and the other end of the blade body is provided with a connecting thread, and the connecting thread is an in-line connecting thread. Or externally connected threads.
  • the blade body is further provided with a clamping surface.
  • the ultrasonic cutter head of the present invention can concentrate the energy generated by the ultrasonic transducer to the front end portion of the cutter head, so that the end portion of the cutter head has the strongest energy output, thereby achieving the strongest working effect.
  • the spiral design of the tip end of the ultrasonic cutter head of the present invention can help the doctor to gradually advance in a spiral manner in the operation requiring the use of the ultrasonic knife to punch, thereby making the punching operation more controllable and improved.
  • the safety of the surgery reduces the intensity of the doctor's operation.
  • the spiral design of the end of the cutter head can take advantage of both the quick screwing in and the increase of the holding force.
  • the ultrasonic knife can be directly used without using other tools. take out.
  • the ultrasonic blade head of the present invention adds a chip flute or a chip evacuation hole, so that the debris at the time of punching can be discharged from the chip flute or the chip discharge hole, thereby reducing the resistance of the bit in the punching.
  • the ultrasonic cutter head of the present invention has a hollow structure, and a water injection hole is arranged at the end of the cutter head to ensure that the perfusate flows out from the end of the cutter head, which helps to cool the spiral contact surface when the spiral blade is cut. This will further reduce the risk of surgery and improve the safety and success rate of surgery.
  • FIG. 1 is a schematic structural view of a mushroom-shaped ultrasonic blade head for punching in the prior art
  • FIG. 2 is a perspective view of an ultrasonic blade head according to a first embodiment of the present invention
  • Figure 3 is a front elevational view of the end of the bit of the ultrasonic blade head of the first embodiment of the present invention
  • FIG. 4 is a perspective view of an ultrasonic blade head according to a second embodiment of the present invention.
  • Figure 5 is a front elevational view of an ultrasonic blade head according to a second embodiment of the present invention.
  • Figure 6 is a right side elevational view of the end of the ultrasonic head of Figure 5;
  • Figure 7 is a front elevational view of the end portion of the ultrasonic blade head of the third embodiment of the present invention.
  • Figure 8 is a right side elevational view of the end of the ultrasonic head of Figure 7;
  • Figure 9 is a front elevational view of the end portion of the ultrasonic blade head of the fourth embodiment of the present invention with a chip evacuation hole;
  • Figure 10 is a right side elevational view of the end of the cutter head of Figure 9.
  • 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.
  • the ultrasonic blade head of the present invention comprises a cutter head end 1, a cutter bar 2 and a blade body 3.
  • One end of the cutter bar 2 is connected to the tip end portion 1, and the other end of the cutter bar 2 is The blade body 3 is connected, and the blade body 3 is connected to a specific ultrasound host through an ultrasonic transducer.
  • the body of the tip end portion 1 has a cylindrical structure, and the foremost end of the cylindrical structure is gathered.
  • a single or a plurality of spiral blades 11 are arranged from the foremost end (tip) of the tip end portion 1 and spirally disposed along the tip end portion 1 to form a spiral cut portion.
  • the cutting edge 12 of the spiral blade 11 has a square blade or a sharp edge structure.
  • the end portion 1 of the cutter head adopts a single spiral blade 11, and after being screwed in one direction and inserted into the operation portion, the operated tissue or tissue can be grasped by the spiral blade to complete the subsequent pulling. Wait for the operation. When the spiral blade is taken out, it can be taken out in the reverse spiral.
  • the shank 2 has a hollow structure, and the hollow portion extends all the way to the front end of the tip end portion 1.
  • a small hole is formed in the side surface of the cylindrical structure of the tip end portion 1 or the side of the cutting portion as the water injection hole 14, which helps to cool the spiral contact surface when the spiral blade is cut.
  • the hollow portion may also extend directly to the foremost end of the tip end portion 1, and a water injection hole 14 is formed at the foremost end of the tip end portion 1, as shown in FIG.
  • One end of the cutter bar 2 is connected to the tip end portion 1, and the other end of the cutter bar 2 is connected to the blade body 3. Between the shank 2 and the tip end 1, the shank 2 and the blade 3 are smoothly connected by a bevel or a circular arc.
  • a clamping surface 33 is further disposed on the connecting end of the blade body 3 and the blade 2, and the other end of the blade body 3 is further provided with a connecting thread, and the connecting thread is an in-line connecting thread or an external connecting thread, which is in the embodiment Externally connected thread.
  • the connecting thread of the blade 3 can be connected to a specific ultrasonic transducer and tightened with a corresponding wrench, and then the ultrasonic transducer can be connected to a specific ultrasonic host to operate.
  • FIG. 4 to 6 show an ultrasonic blade head according to a second embodiment of the present invention.
  • FIG. 4 is a perspective view of an ultrasonic blade head according to a second embodiment of the present invention
  • FIG. 5 is a front view of the end of the cutter head of FIG. 4
  • FIG. 6 is a right end of the cutter head of the ultrasonic cutter head of FIG. view.
  • the main body of the cutter head end portion 1 has a cylindrical structure
  • the front end of the cylindrical structure is a conical tip end
  • the cylindrical structure and the cone bottom of the conical tip are smoothly connected by a slope or a circular arc surface.
  • the cone bottom diameter of the conical tip is larger than the diameter of the cylindrical structure.
  • a single or a plurality of spiral blades 11 are formed from the foremost end of the tip end portion 1 and spirally disposed along the conical tip end of the tip end portion 1 to form a cutting portion.
  • the shank 2 has a hollow structure, and the hollow portion extends all the way to the front end of the tip end portion 1.
  • a small hole is formed in the side of the cylindrical structure of the tip end portion 1 or the side of the cutting portion as the water injection hole 14.
  • the water injection hole 14 is provided at the side of the cylindrical structure of the tip end portion 1.
  • a conical tip is used, the length and the sharpness of the cutting portion are lengthened, and two spiral blades 11 are adopted, which can take advantage of the quick screwing in and increase the holding force, and can be taken when removing the bone plant.
  • Fig. 7 to 8 show a tip end of the ultrasonic blade head of the third embodiment of the present invention with a chip evacuation hole.
  • Fig. 7 is a front elevational view of the end portion of the ultrasonic blade head of the third embodiment of the present invention with a chip evacuation hole
  • Fig. 8 is a right side view of the tip end portion of the ultrasonic blade head of Fig. 7.
  • the ultrasonic blade head according to the third embodiment of the present invention is similar to the ultrasonic blade head of the first embodiment and the second embodiment of the present invention, and the body of the tip end portion 1 has a cylindrical structure.
  • the front end of the cylindrical structure is a conical tip, and the cylindrical structure and the cone bottom of the conical tip are smoothly connected by a slope or a circular arc surface, and the diameter of the cone bottom of the conical tip is larger than the diameter of the cylindrical structure.
  • a single or a plurality of spiral blades 11 are formed from the foremost end of the tip end portion 1 and spirally disposed along the conical tip end of the tip end portion 1 to form a cut portion.
  • the ultrasonic blade head according to the third embodiment of the present invention is different in that a plurality of through holes are formed in the cutting portion of the tip end portion 1 as the chip discharge.
  • the hole 13, the plurality of chip evacuation holes 13 are circumferentially distributed around the axial center line of the cutting portion, and the axial center line of the chip discharging hole 13 is parallel to the axial center line of the tip end portion 1.
  • Fig. 9 and 10 show an ultrasonic blade head according to a fourth embodiment of the present invention.
  • Fig. 9 is a front elevational view of the end portion of the ultrasonic blade head of the fourth embodiment of the present invention with a chip evacuation hole
  • Fig. 10 is a right side view of the tip end portion of the ultrasonic blade head of Fig. 9.
  • the ultrasonic blade head according to the fourth embodiment of the present invention is similar to the ultrasonic blade head of the first embodiment and the second embodiment of the present invention, and the body of the tip end portion 1 has a cylindrical structure.
  • the front end of the cylindrical structure is a conical tip, and the cylindrical structure and the cone bottom of the conical tip are smoothly connected by a slope or a circular arc surface, and the diameter of the cone bottom of the conical tip is larger than the diameter of the cylindrical structure.
  • a single or a plurality of spiral blades 11 are formed from the foremost end of the tip end portion 1 and spirally disposed along the conical tip end of the tip end portion 1 to form a cut portion.
  • the ultrasonic blade head according to the fourth embodiment of the present invention is different in that a plurality of chip flutes 13 are formed in the cutting portion of the tip end portion 1, and a plurality of The chip flutes 13 are evenly distributed along the outer circumference of the cutting portion, and the axial center line of the flutes 13 is parallel to the axial center line of the tip end portion 1.
  • the axial center line of the chip flute 13 and the axial center line of the tip end portion 1 may not be completely parallel and have an angle of an angle, and the technical effect of the present invention can also be achieved.
  • the drilling is the main function for the spiral ultrasonic blade head, but the ultrasonic blade head also has the function of external scraping and cutting. That is, the outward scraping operation is performed by the outwardly facing reverse edge of the spiral rear portion. Particularly in the third embodiment and the fourth embodiment of the present invention, the outward scraping operation can be realized by the rear end of the disk.
  • the ultrasonic cutter head of the invention can concentrate all the energy generated by the ultrasonic transducer on the front end portion of the knife, so that the front end portion of the cutter has the strongest energy output to achieve the strongest working effect.
  • the spiral design of the end of the cutter head can help the doctor to gradually advance in a spiral manner in the operation requiring the use of the ultrasonic knife to punch the hole, thereby making the punching operation more controllable, improving the safety of the operation and reducing the doctor. Operating intensity.
  • the spiral design of the end of the cutter head can also take advantage of the quick screwing in and the increase of the holding force. When the bone plant is taken out, the ultrasonic blade can be directly taken out without using other tools.
  • the chip flute or the chip removing hole is added, so that the debris at the time of punching can be discharged from the chip flute or the chip removing hole, and the resistance of the bit in the punching is reduced.
  • a water injection hole is arranged at the end of the cutter head, which ensures that the perfusion liquid flows out from the end of the cutter head, which helps to cool the spiral contact surface when the spiral blade is cut, so that The risk of surgery is further reduced, and the safety and success rate of surgery are improved.

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Abstract

一种超声刀刀头，包括刀头端部（1）、刀杆（2）和刀身（3），刀杆（2）的一端和刀头端部（1）连接，刀杆（2）的另一端和刀身（3）连接，其中，刀头端部（1）的主体是圆柱形结构，其前端收拢；单条或多条螺旋形刀刃（11）从刀头端部（1）的最前端开始，沿着刀头端部（1）盘旋设置形成切割部。螺旋形刀刃（11）的切割刃（12）采用方刃或尖刃结构。刀头端部（1）的螺旋式设计能够帮助医生在需要使用超声刀打孔的手术中采用螺旋方式逐渐向内进行，从而使打孔操作更加可控，提高了手术的安全性，降低了医生操作强度。

Description

一种超声刀刀头 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。在外科手术中，经常使用超声刀对软组织、硬组织以及类人体组织进行打孔操作。目前，手术中用于打孔的超声刀刀头以针形刀头和伞形刀头为主，伞形刀头如图1所示。这些刀头只能通过直刺的方式对组织进行打孔操作，使用中需要很大的向下压力，效率低且不易控制，而且很容易伤及肌体，产生医疗事故。
发明内容
为了解决上述问题，本发明设计了一种超声刀刀头，采用螺旋形刀刃，并带有排屑孔，能够快速、安全、省力地帮助医生完成所需的打孔操作。
为了解决上述存在的技术问题，本发明提出了一种超声刀刀头，包括刀头端部、刀杆和刀身，所述刀杆的一端和所述刀头端部连接，所述刀杆的另一端和所述刀身连接，其中，所述刀头端部的主体是圆柱形结构，其前端收拢，单条或多条螺旋形刀刃从所述刀头端部的最前端开始，沿着所述刀头端部盘旋设置形成切割部。
本发明的超声刀刀头中，优选为，所述圆柱形结构的前端是圆锥尖端，且所述圆锥尖端的锥底直径大于所述圆柱形结构的直径，所述单条或多条螺旋形刀刃从所述圆锥尖端的最前端开始，沿着所述圆锥尖端盘旋设置而形成切割部。
本发明的超声刀刀头中，优选为，所述圆柱形结构和所述圆锥尖端之间通过斜面或圆弧面平滑过渡连接。
本发明的超声刀刀头中，优选为，所述螺旋形刀刃的切割刃采用方刃或尖刃结构。
本发明的超声刀刀头中，优选为，所述刀头端部的切割部加工有多个排屑孔或排屑槽，所述多个排屑孔或排屑槽沿所述切割部的周向均布。
本发明的超声刀刀头中，优选为，所述排屑孔或排屑槽的轴向中心线和所述刀头端部的轴向中心线平行。
本发明的超声刀刀头中，优选为，所述刀杆为中空结构，中空部分一直延伸到所述刀头端部的前端，在所述刀头端部的圆柱形结构侧面或切割部侧面或最前端，开设有注水孔。
本发明的超声刀刀头中，优选为，所述刀杆和所述刀头端部之间、所述刀杆和所述刀身之间通过斜面或圆弧面平滑过渡连接。
本发明的超声刀刀头中，优选为，所述刀身另一端通过超声换能器与特定的超声主机连接，所述刀身的另一端设置有连接螺纹，所述连接螺纹为内嵌式连接螺纹或外嵌式连接螺纹。
本发明的超声刀刀头中，优选为，所述刀身上还设置有夹持面。
该超声刀刀头具有以下有益效果：
(1)本发明的超声刀刀头可以将超声换能器所产生的能量全部汇聚于刀头前端部分，使刀头的端部分具有最强的能量输出，达到最强的工作效果。
(2)本发明的超声刀刀头的刀头端部的螺旋式设计能够帮助医生在需要使用超声刀打孔的手术中采用螺旋方式逐渐向内进行，从而使打孔操作更加可控，提高了手术的安全性，降低了医生操作强度。
(3)本发明的超声刀刀头中，刀头端部的螺旋式设计，能够兼顾快速拧入和增加把持力度的优势，在取出骨头内植物时，可以不借助其他工具，用超声刀直接取出。
(4)本发明的超声刀刀头增加了排屑槽或排屑孔，这样能够使打孔时的碎屑从排屑槽或排屑孔排出，从而减小刀头在打孔中阻力。
(5)本发明的超声刀刀头为中空结构，刀头端部上有注水孔，可确保灌注液由刀头端部流出，有助于在螺旋刀刃切骨时对螺旋接触面进行降温，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为现有技术中打孔用的伞形超声刀刀头的结构示意图；
图2为本发明第一实施方式的超声刀刀头的立体示意图；
图3为本发明第一实施方式的超声刀刀头的刀头端部的主视图；
图4为本发明第二实施方式的超声刀刀头的立体示意图；
图5为本发明第二实施方式的超声刀刀头的主视图；
图6为图5中的超声刀刀头的刀头端部的右视图；
图7为本发明第三实施方式的超声刀刀头的刀头端部的主视图；
图8为图7中的超声刀刀头的刀头端部的右视图；
图9为本发明第四实施方式的超声刀刀头的带有排屑孔的刀头端部的主视图；
图10为图9中刀头端部的右视图。
图中：
1—刀头端部；11—螺旋形刀刃；12—切割刃；13—排屑孔或排屑槽；14—注水孔；2—刀杆；3—刀身；31—连接螺纹；32—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2至图3示出了本发明第一实施方式的超声刀刀头。图2为本发明实施方式的超声刀刀头的立体示意图，图3为图2中刀头端部的主视图。如图2～图3所示，本发明的超声刀刀头包括刀头端部1、刀杆2和刀身3，刀杆2的一端和刀头端部1连接，刀杆2的另一端和刀身3连接，刀身3通过超声换能器与特定的超声主机连接。
刀头端部1的主体为圆柱形结构，圆柱形结构的最前端收拢。单条或多条螺旋形刀刃11从刀头端部1的最前端(尖端)开始，沿着刀头端部1盘旋设置从而形成螺旋形的切割部。螺旋形刀刃11的切割刃12采用四方刃或尖刃结构。本发明第一实施方式中，刀头端部1采用单条螺旋形刀刃11,在单方向拧动而扎入操作部位后,可以利用螺旋形刀刃把持住被操作组织或类组织,完成后续提拉等操作。在螺旋形刀刃取出时可沿反向螺旋旋转取出。
刀杆2为中空结构，中空部分一直延伸到刀头端部1的前端。在刀头端部1的圆柱形结构的侧面或切割部侧面开设有小孔以作为注水孔14，有助于在螺旋刀刃切骨时对螺旋接触面进行降温。中空部分也可以直接延伸到刀头端部1的最前端，在刀头端部1的最前端形成注水孔14，如图3所示。
刀杆2一端连接刀头端部1，刀杆2的另一端连接刀身3。刀杆2和刀头端部1之间、刀杆2和刀身3之间通过斜面或圆弧面平滑过渡连接。在刀身3上与刀杆2的连接端还设置有夹持面33，刀身3的另一端还设置有连接螺纹，连接螺纹为内嵌式连接螺纹或外嵌式连接螺纹，本实施方式中为外嵌式连接螺纹。工作时，可以将刀身3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。
图4至图6示出了本发明第二实施方式的超声刀刀头。图4为本发明第二实施方式的超声刀刀头的立体示意图，图5为图4中刀头端部的主视图，图6为图5中的超声刀刀头的刀头端部的右视图。如图4、图5所示，刀头端部1的主体为圆柱形结构，圆柱形结构的前端是圆锥尖端，圆柱形结构和圆锥尖端的锥底之间通过斜面或圆弧面平滑过渡连接，且圆锥尖端的锥底直径大于圆柱形结构的直径。单条或多条螺旋形刀刃11从刀头端部1的最前端开始，沿着刀头端部1的圆锥尖端盘旋设置形成切割部，本实施方式中采用了两条螺旋形刀刃11。刀杆2为中空结构，中空部分一直延伸到刀头端部1的前端。在刀头端部1的圆柱形结构侧面或切割部侧面开设小孔，以作为注水孔14。本实施方式中注水孔14设置在刀头端部1的圆柱形结构的侧面。
本实施方式中采用了圆锥尖端，加长了切割部长度和锐利度，并采用了两条螺旋形刀刃11，该结构能够兼顾快速拧入和增加把持力度的优势，在取出骨内植物时，可以不借助其他工具，用超声刀直接取出。
图7至图8示出了本发明第三实施方式的超声刀刀头的带有排屑孔的刀头端部。图7为本发明第三实施方式的超声刀刀头的带有排屑孔的刀头端部的主视图，图8为图7中的超声刀刀头的刀头端部的右视图。如图7、图8所示，本发明第三实施方式的超声刀刀头与本发明第一实施方式、第二实施方式的超声刀刀头类似，刀头端部1的主体为圆柱形结构，圆柱形结构的前端是圆锥尖端，圆柱形结构和圆锥尖端的锥底之间通过斜面或圆弧面平滑过渡连接，且圆锥尖端的锥底直径大于圆柱形结构的直径。单条或多条螺旋形刀刃11从刀头端部1的最前端开始，沿着刀头端部1的圆锥尖端盘旋设置而形成切割部。相比于本发明第一实施方式、第二实施方式，本发明第三实施方式的超声刀刀头的不同之处在于，在刀头端部1的切割部加工有多个通孔作为排屑孔13，多个排屑孔13围绕切割部轴向中心线周向均布，且排屑孔13的轴向中心线和刀头端部1的轴向中心线平行。
图9、图10示出了本发明第四实施方式的超声刀刀头。图9为本发 明第四实施方式的超声刀刀头的带有排屑孔的刀头端部的主视图，图10为图9中的超声刀刀头的刀头端部的右视图。如图9、图10所示，本发明第四实施方式的超声刀刀头与本发明第一实施方式、第二实施方式的超声刀刀头类似，刀头端部1的主体为圆柱形结构，圆柱形结构的前端是圆锥尖端，圆柱形结构和圆锥尖端的锥底之间通过斜面或圆弧面平滑过渡连接，且圆锥尖端的锥底直径大于圆柱形结构的直径。单条或多条螺旋形刀刃11从刀头端部1的最前端开始，沿着刀头端部1的圆锥尖端盘旋设置形成切割部。相比于本发明第一、第二实施方式，本发明第四实施方式的超声刀刀头的不同之处在于，在刀头端部1的切割部加工有多个排屑槽13，多个排屑槽13沿切割部外周周向均布，且排屑槽13的轴向中心线和刀头端部1的轴向中心线平行。当然，排屑槽13的轴向中心线和刀头端部1的轴向中心线也可以不完全平行而具有一定角度的夹角，也能够达到本发明的技术效果。
另外，本发明所涉及的超声刀刀头中，对于螺旋形超声刀刀头来说，钻孔是其主要的功能，但是该种超声刀刀头还具有外刮除切割的功能。也就是说，通过螺旋后部所具有的向外的反刃，进行向外刮除操作。特别是在本发明第三实施方式和第四实施方式中，能够通过圆盘的后端实现向外刮除的操作。
本发明中的超声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，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。另外，刀头端部的螺旋式设计能够帮助医生在需要使用超声刀打孔的手术中采用螺旋方式逐渐向内进行，从而使打孔操作更加可控，提高了手术的安全性，降低了医生的操作强度。本发明的超声刀刀头中，刀头端部的螺旋式设计还能够兼顾快速拧入和增加把持力度的优势，在取出骨内植物时，可以不借助其他工具，直接用超声刀取出。
另外，本发明中增加了排屑槽或排屑孔，这样能够使打孔时的碎屑从排屑槽或排屑孔排出，减小刀头在打孔中的阻力。另外，由于超声刀刀头为中空结构，刀头端部上有注水孔，可确保灌注液由刀头端部流出，有助于在螺旋刀刃切骨时对螺旋接触面进行降温，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。
以上各实施方式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方式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，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. 一种超声刀刀头，包括刀头端部、刀杆和刀身，所述刀杆的一端和所述刀头端部连接，所述刀杆的另一端和所述刀身连接，其特征在于，
    所述刀头端部的主体是圆柱形结构，其前端收拢，单条或多条的螺旋形刀刃从所述刀头端部的最前端起沿着所述刀头端部盘旋设置而形成切割部。
  2. 根据权利要求1所述的超声刀刀头，其特征在于，
    所述圆柱形结构的前端是圆锥尖端，且所述圆锥尖端的锥底直径大于所述圆柱形结构的直径。
  3. 根据权利要求2所述的超声刀刀头，其特征在于，
    所述圆柱形结构和所述圆锥尖端之间通过斜面或圆弧面平滑过渡连接。
  4. 根据权利要求1、2或3所述的超声刀刀头，其特征在于，
    所述螺旋形刀刃的切割刃采用方刃或尖刃结构。
  5. 根据权利要求1、2或3所述的超声刀刀头，其特征在于，
    所述刀头端部的切割部加工有多个排屑孔或排屑槽，所述多个排屑孔或排屑槽沿所述切割部周向均布。
  6. 根据权利要求5所述的超声刀刀头，其特征在于，
    所述排屑孔或排屑槽的轴向中心线和所述刀头端部的轴向中心线大致平行。
  7. 根据权利要求1、2、3或6所述的超声刀刀头，其特征在于，
    所述刀杆为中空结构，中空结构一直延伸到所述刀头端部的前端，在所述刀头端部的圆柱形结构侧面或切割部侧面或最前端开设有注水孔。
  8. 根据权利要求1、2、3或6所述的超声刀刀头，其特征在于，
    在所述刀杆和所述刀头端部之间、所述刀杆和所述刀身之间通过斜面或圆弧面平滑过渡连接。
  9. 根据权利要求1、2、3或6所述的超声刀刀头，其特征在于，
    所述刀身的另一端通过超声换能器与特定的超声主机连接，在所述 刀身的另一端设置有连接螺纹，所述连接螺纹为内嵌式连接螺纹或外嵌式连接螺纹。
  10. 根据权利要求1、2、3或6所述的超声刀刀头，其特征在于，
    在所述刀身上还设置有夹持面。
PCT/CN2018/075445 2017-02-21 2018-02-06 一种超声刀刀头 Ceased WO2018153249A1 (zh)

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