CN104434231B - 一种pzt换能器和变幅杆一体化超声驱动结构 - Google Patents

一种pzt换能器和变幅杆一体化超声驱动结构 Download PDF

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CN104434231B
CN104434231B CN201410707662.2A CN201410707662A CN104434231B CN 104434231 B CN104434231 B CN 104434231B CN 201410707662 A CN201410707662 A CN 201410707662A CN 104434231 B CN104434231 B CN 104434231B
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pzt
ultrasonic
lamination
ultrasonic transformer
ring flange
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CN104434231A (zh
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王睿
王续跃
王晓明
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Dalian University of Technology
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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
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8665—Nuts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B06B1/0611—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements in a pile
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/50—Piezoelectric or electrostrictive devices having a stacked or multilayer structure
    • H10N30/503—Piezoelectric or electrostrictive devices having a stacked or multilayer structure having a non-rectangular cross-section in a plane orthogonal to the stacking direction, e.g. polygonal or circular in top view
    • H10N30/505—Piezoelectric or electrostrictive devices having a stacked or multilayer structure having a non-rectangular cross-section in a plane orthogonal to the stacking direction, e.g. polygonal or circular in top view the cross-section being annular
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
    • A61B2017/00398—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like using powered actuators, e.g. stepper motors, solenoids
    • A61B2017/00402—Piezo electric actuators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B2017/22027—Features of transducers
    • 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
    • A61B2017/320088—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with acoustic insulation, e.g. elements for damping vibrations between horn and surrounding sheath

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Abstract

一种PZT换能器和变幅杆一体化超声驱动结构，由螺母、螺栓、左侧PZT圆环叠片、法兰盘、右侧PZT圆台叠片、变幅杆组成；变幅杆、右侧PZT圆台叠片、法兰盘、左侧PZT圆环叠片依次排列后用螺栓联接，然后用螺母固定；右侧PZT换能器由PZT圆环形叠片变为圆台形叠片，右侧PZT换能器和变幅杆一体化构成超声驱动结构；依据法兰盘两侧PZT尺寸和变幅杆满足超声振动节点和腹点要求，圆环形PZT换能器、法兰盘的圆形轮廓减小的尺寸转化为圆台形PZT换能器和法兰盘叠片的厚度。本发明的一体化结构，能够获得了减小超声驱动手术装置轮廓尺寸效果，外径尺寸由目前的12‑15mm范围，降低到外径在8‑10mm范围内，进一步满足应用要求。

Description

一种PZT换能器和变幅杆一体化超声驱动结构
技术领域
本发明属于超声驱动医疗手术装置及其应用领域，涉及一种PZT(压电陶瓷材料)换能器和变幅杆一体化结构设计和组装的超声振动装置。
背景技术
常规的PZT换能器和变幅杆超声驱动装置,如图1所示,由螺母1,螺栓2,左侧PZT圆环叠片3,法兰盘4,右侧PZT圆环叠片5,变幅杆6组成。在现有PZT材料、超声产生和驱动结构条件下,驱动装置轮廓尺寸局限在一定空间范围内，其外径尺寸较大,达不到理想的腹部微创要求。对PZT换能器和变幅杆一体化设计和组装，法兰盘4两侧PZT材料尺寸和变幅杆形状应满足超声振动节点和腹点要求，本发明修改了传统的PZT换能器和变幅杆分开设计和组装方法，进行PZT换能器和变幅杆一体化结构设计和组装，如图2所示，把右侧PZT叠片设计和组装成为变幅杆的一部分，在不改变PZT总体尺寸前提下，相对减小常规变幅杆尺寸，进而实现减小超声驱动装置外径尺寸的目标，经验证一种PZT换能器和变幅杆一体化结构设计和组装方法，其驱动装置外径尺寸明显减小。图3和图4为法兰盘、左侧PZT换能器与右侧换能器、变幅杆一体化设计的超声驱动结构。
发明内容
针对常规的PZT换能器和变幅杆超声驱动装置分离设计,在现有PZT材料、超声产生和驱动结构条件下,驱动装置轮廓尺寸局限在一定空间范围内，其外径在12-15mm范围内,达不到理想的腹部微创要求的问题。依据法兰盘4两侧PZT材料尺寸和变幅杆满足超声振动节点和腹点要求，修改传统的PZT换能器和变幅杆分开设计结构，进行PZT换能器和变幅杆一体化结构设计和组装。
本发明将压电换能器和变幅杆一体化设计，把右侧PZT叠片5设计和组装成为变幅杆的一部分，在不改变PZT总体尺寸前提下，相对减小变幅杆尺寸，进而实现减小超声驱动装置外径尺寸的目标，具体结构如下：
一种PZT换能器和变幅杆一体化超声驱动结构，包括螺母、螺栓、左侧PZT圆环叠片、法兰盘、右侧PZT圆台叠片和变幅杆；变幅杆、右侧PZT圆台叠片、法兰盘、左侧PZT圆环叠片依次排列后用螺栓联接，然后用螺母固定；右侧PZT换能器由PZT圆环形叠片变为圆台形叠片，右侧PZT换能器和变幅杆一体化构成超声驱动结构；设计过程依据法兰盘两侧PZT尺寸和变幅杆满足超声振动节点和腹点要求，圆环形PZT换能器、法兰盘的圆形轮廓减小的尺寸转化为圆台形PZT换能器和法兰盘叠片的厚度。依据法兰盘[4]两侧PZT尺寸和变幅杆满足超声振动节点和腹点要求，圆环形PZT换能器、法兰盘的圆形轮廓减小的尺寸转化为圆台形PZT换能器和法兰盘叠片的厚度。
进一步，前述的一种PZT换能器和变幅杆一体化超声驱动结构，可以扩展的结构为：法兰盘为圆台形，与右侧PZT换能器和变幅杆一体化构成超声驱动结构。
更进一步，如前两项所述的一种PZT换能器和变幅杆一体化超声驱动结构，还可以扩展的结构为：左侧PZT换能器为圆台形，其与法兰盘、右侧PZT换能器、变幅杆一体化构成超声驱动结构。
本发明的有益效果是PZT换能器和变幅杆一体化结构，能够获得了减小超声驱动装置轮廓尺寸效果，外径尺寸由目前的12-15mm范围，降低到外径在8-10mm范围内，进一步满足应用要求。
附图说明
图1是常规PZT换能器和变幅杆的结构示意图。
图2是一种右侧PZT换能器和变幅杆一体化结构示意图。
图3是法兰盘、右侧PZT换能器和变幅杆一体化结构示意图。
图4是左侧PZT换能器、法兰盘、右侧PZT换能器和变幅杆一体化结构图。
图中：1螺母；2螺栓；3左侧PZT圆环叠片；4圆环形法兰盘；
5右侧PZT圆环叠片；6变幅杆。
具体实施方式
本发明把超声驱动医疗手术装置中的压电换能器和变幅杆一体化设计，在不改变PZT总体尺寸前提下，分别把法兰盘和PZT叠片设计和组装成为变幅杆的一部分，PZT叠片既有电和机械变换功能，又有振幅放大功能，相对减小变幅杆尺寸，进而实现减小超声驱动装置外径尺寸的目标。
具体实施方式为，一种PZT换能器和变幅杆一体化超声振动结构，由螺母1,螺栓2,左侧PZT圆环叠片3,圆环形法兰盘4,右侧PZT圆台叠片5,变幅杆6组成；把变幅杆6，右侧PZT圆台叠片5，法兰盘4，左侧PZT圆环叠片3依次排列后，用螺栓2串连联接，然后用螺母1固定；如图2所示，右侧PZT结构形状，由右侧PZT圆环状叠片，重新设计为圆台结构叠片，对PZT换能器和变幅杆一体化设计和组装，法兰盘4两侧PZT材料尺寸和变幅杆满足超声振动节点和腹点要求，其圆环轮廓减小的尺寸转化为右侧PZT圆台叠片5的厚度，并保持左侧PZT圆环叠片数和右侧PZT圆台叠片数对应一致，同时，叠片之间粘接需保持足够的刚性，以保证PZT变换器电能到机械能的较高转换效率。
本发明一种PZT换能器和变幅杆一体化结构图有3种结构形式，如前面所述的一种PZT换能器和变幅杆一体化超声驱动结构，可以扩展的结构形式，法兰盘为圆台形，与右侧PZT换能器和变幅杆一体化构成超声驱动结构。进而，如前两项所述的一种PZT换能器和变幅杆一体化超声驱动结构，还可以扩展的结构形式为，左侧PZT换能器为圆台形，其与法兰盘、右侧PZT换能器、变幅杆一体化构成超声驱动结构。
一种PZT换能器和变幅杆一体化结构设计和组装方法，明显取得了减小超声驱动手术装置轮廓尺寸的效果，外径尺寸由目前的12-15mm范围，降低到外径小于10mm，进一步满足应用要求,本发明一种PZT换能器和变幅杆一体化超声驱动方法,还可以应用到其它需要减小尺寸的超声驱动装置设计中。

Claims (3)

1. 一种PZT换能器和变幅杆一体化超声驱动结构，包括螺母(1)、螺栓(2)、左侧PZT换能器(3)、法兰盘(4)、右侧PZT换能器(5)和变幅杆(6)；其特征在于：变幅杆(6)、右侧PZT换能器(5)、法兰盘(4)、左侧PZT换能器(3)依次排列后用螺栓(2)联接，然后用螺母(1)固定；其中，左侧PZT换能器由圆环形叠片组成，右侧PZT换能器由PZT圆环形叠片变为圆台形叠片，右侧PZT换能器和变幅杆一体化构成；
依据法兰盘(4)两侧PZT换能器的尺寸和变幅杆满足超声振动节点和腹点要求，圆环形PZT换能器、法兰盘的圆环形轮廓减小的尺寸转化为圆台形PZT换能器和法兰盘的厚度。
2.根据权利要求1所述的一种PZT换能器和变幅杆一体化超声驱动结构，其特征在于：法兰盘为圆台形，与右侧PZT换能器和变幅杆一体化构成。
3.根据权利要求1或2所述的一种PZT换能器和变幅杆一体化超声驱动结构，其特征在于：左侧PZT换能器为圆台形，其与法兰盘、右侧PZT换能器、变幅杆一体化构成。
CN201410707662.2A 2014-11-27 2014-11-27 一种pzt换能器和变幅杆一体化超声驱动结构 Expired - Fee Related CN104434231B (zh)

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EP15863501.1A EP3225171B1 (en) 2014-11-27 2015-09-13 Ultrasonic driving structure with integrated pzt transducer and amplitude transformer
US15/525,916 US9974587B2 (en) 2014-11-27 2015-09-13 PZT transducer-horn integrated ultrasonic driving structure
PCT/CN2015/089483 WO2016082602A1 (zh) 2014-11-27 2015-09-13 一种pzt换能器和变幅杆一体化超声驱动结构

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CN104434231B (zh) * 2014-11-27 2016-08-17 大连理工大学 一种pzt换能器和变幅杆一体化超声驱动结构
CN106557622B (zh) * 2016-11-08 2023-05-23 哈尔滨理工大学 一种大尺寸环形圆锥型超声变幅杆的设计方法
CN107840096B (zh) * 2017-08-04 2019-12-31 杭州电子科技大学 微纳米黏性粉体微量稳定输送装置及方法
US11259832B2 (en) * 2018-01-29 2022-03-01 Covidien Lp Ultrasonic horn for an ultrasonic surgical instrument, ultrasonic surgical instrument including the same, and method of manufacturing an ultrasonic horn
CN108340023B (zh) * 2018-02-24 2019-04-12 大连理工大学 一种用于蜂窝芯材料切削的超声振动系统
CN109009331B (zh) * 2018-08-08 2024-02-06 北京安和加利尔科技有限公司 一种超声手术一体刀
US11331115B2 (en) 2018-10-03 2022-05-17 Covidien Lp Reusable ultrasonic transducer and generator assemblies, surgical instruments including the same, and methods of manufacturing the same
CN110976259B (zh) * 2019-12-14 2021-07-27 大连理工大学 一种双激励超声椭圆振动切削装置
CN110976258A (zh) * 2019-12-14 2020-04-10 大连理工大学 一种沿垂直刀杆方向的双激励超声椭圆振动切削装置
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