Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High power density piezoelectric transducer for ultrasonic surgical instrument

A high power density, piezoelectric transducer technology, applied in the field of medical devices, can solve the problems of severe cutting drop and low ultrasonic power, and achieve the effect of increasing ultrasonic energy, improving directivity, and improving electroacoustic conversion efficiency

Inactive Publication Date: 2012-12-12
HANGZHOU DIANZI UNIV
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, this surgical method still has problems such as low ultrasonic power, and the cutting rate of large blood vessels, especially fat-rich tissues, is greatly reduced.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High power density piezoelectric transducer for ultrasonic surgical instrument
  • High power density piezoelectric transducer for ultrasonic surgical instrument
  • High power density piezoelectric transducer for ultrasonic surgical instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Such as figure 1 As shown, the high power density piezoelectric transducer for ultrasonic surgical instruments includes three groups of piezoelectric transducer units 1 and two deformation transformation blocks 2, and each deformation transformation block 2 is arranged between two adjacent piezoelectric transducers. An insulating layer 3 with a thickness a is arranged between the units 1 , between the piezoelectric transducer unit 1 and the deformation transformation block 2 . The center distance L1 between the first group of piezoelectric transducing units and the second group of piezoelectric transducing units is equal to the center distance L2 between the second group of piezoelectric transducing units and the third group of piezoelectric transducing units.

[0020] Such as figure 2 As shown, the piezoelectric transduction unit 1 adopts a piezoelectric stack structure, which is cylindrical in shape as a whole, and includes three coaxially arranged disc-shaped piezo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a high power density piezoelectric transducer for an ultrasonic surgical instrument. The existing product has small ultrasonic power. The high power density piezoelectric transducer comprises a plurality of groups of piezoelectric transduction units, wherein a solid trumpet-shaped deformation transformation block is arranged between every two adjacent piezoelectric transduction units, and insulation layers are arranged between the piezoelectric transduction units and the deformation transformation blocks. Each piezoelectric transduction unit comprises a plurality of disc piezoelectric sheets which are coaxially arranged, metal electrodes are respectively arranged on the surfaces of the disc piezoelectric sheets, and two cone frustum-shaped metal caps are arranged between every two adjacent piezoelectric sheets. All the piezoelectric transduction units have the same height, the diameters of the piezoelectric sheets of the plurality of piezoelectric transduction units are sequentially reduced, and all the deformation transformation blocks have the same height. The center distance between two adjacent piezoelectric transduction units satisfies the dispersion equation. With the high power density piezoelectric transducer, the electroacoustic conversion efficiency is effectively increased, the ultrasonic irradiation directivity is improved, and the ultrasonic energy of a local area is improved within a limited space.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a high power density piezoelectric transducer applied to an ultrasonic scalpel system, and is a supporting part of the ultrasonic scalpel system. Background technique [0002] In the 1970s, minimally invasive techniques developed rapidly. At present, minimally invasive surgery has been applied to nearly 10 operations including general surgery, obstetrics and gynecology, cardiothoracic surgery, urology, pediatric surgery, orthopedics, brain surgery and ophthalmology. The development of minimally invasive surgery has led to the development of surgical instruments, such as endoscopic ultrasound, ultrasonic knife, micro-surgical instruments, and various endovascular cutting and staplers. Surgical instruments that emerged in turn promoted the development of minimally invasive surgery, and gradually developed into a branch of the medical device industry. [0003] The ultrasoni...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61B18/00
Inventor 余厉阳
Owner HANGZHOU DIANZI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products