Electroliquid bifocal surge reflector

A bifocal and shock wave technology, applied in the field of medical devices, can solve the problems of inability to generate shear force and further enhance the effect of crushing stones, and achieve the effect of simple structure, low cost and easy realization

Inactive Publication Date: 2004-03-17
THE AFFILIATED DRUM TOWER HOSPITAL MEDICAL SCHOOL OF NANJING UNIV +1
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the single focal point (F2) cannot generate shear force, so it cannot further enhance the effect of lithotripsy, improve the efficiency of lithotripsy, and reduce the pain of patients.

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
  • Electroliquid bifocal surge reflector
  • Electroliquid bifocal surge reflector
  • Electroliquid bifocal surge reflector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Such as image 3 , Figure 4 , Figure 5 , Figure 6 As shown, the shock wave generated by the same electrode high-voltage discharge source is emitted from the first focal point F1, and passes through the original metal semi-ellipsoid reflector 1 (also called the main reflector 1), the second metal semi-ellipsoid reflector 2 (also known as the main reflector 1) The concave surface, which can be called as the secondary reflector 2), focuses the shock waves on their respective focal points, that is, F2 and F3. Since F2 and F3 are very close, the vertical distance is preferably 5 mm to 15 mm. A stress field overlap area is generated between the two focus points, and shear force is generated, and the stones in the stress field overlap area between the two focal points are quickly and easily crushed under the action of the shear force.

[0014] The secondary reflector 2 is mounted on the concave surface of the primary reflector 1 , and the shape of the back of the seconda...

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 present invention relates to one shock wave source reflector for extraneous calculus crusher. The present invention has secondary reflector set in partial surface of the primary reflector, and the shock wave emitted from the primary focus point is focused via the primary reflector and the secondary reflector onto two different near focus points to produce shearing force. The shearing force is used to crush calculus, which has lower shearing strength than tensile strength and compression strength. The present invention can result in effective calculus breaking and has simple structure and low cost.

Description

technical field [0001] The invention relates to a medical device, in particular to a shock wave source reflector of an extracorporeal impact lithotriptor. Background technique [0002] Before the present invention was made, the extracorporeal impact lithotripter was widely used, and its electrohydraulic shock wave reflector was single-focus, that is, the shock wave was emitted from the first focal point F1, and the reflection of the concave surface of the metal semi-ellipsoid reflector was used. Focus the shock wave on the second focal point of the metal semi-ellipsoid reflector, and the stone is at this position, as shown in figure 1 shown. The mechanical mechanism of its lithotripsy is mainly the tension generated by the reflected wave when the incident shock wave enters the stone and the refracted wave when it passes through the stone, as well as a series of stress effects such as the pressure generated by the shock wave on the surrounding stone. And crushing stones, su...

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
Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/225G02B5/08G02B5/12
Inventor 孙西钊
Owner THE AFFILIATED DRUM TOWER HOSPITAL MEDICAL SCHOOL OF NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap