CN2414741Y

CN2414741Y - Ultrasonic catarct emulsion operation knife

Info

Publication number: CN2414741Y
Application number: CN 00219630
Authority: CN
Inventors: 宁新宝; 吴巍; 张保平; 陈孝桢
Original assignee: Nanjing University
Current assignee: Nanjing University
Priority date: 2000-03-16
Filing date: 2000-03-16
Publication date: 2001-01-17
Anticipated expiration: 2010-03-16

Abstract

The utility model relates to an ultrasonic cataract emulsification operation knife, which comprises an outer casing, a variable-amplitude rod, a knife head, an ultrasonic transducer which is arranged in the outer casing, a water filling pipe, a suction pipe, etc., the ultrasonic transducer and the variable-amplitude rod are tightly attached; the knife head is arranged at the front end of the variable-amplitude rod; the water filling pipe which leads to the knife head, and the suction pipe which leads to the knife head are communicated in the outer casing; the variable-amplitude rod is made by a staircase-shaped front cover plate which has a deformed wave length with one fourth of the wave length. The dimension of the front end of a handle of the utility model is reduced, and the weight of the handle is reduced. The utility model has the advantages of compact dimension and large transferred ultrasonic energy.

Description

A kind of ultrasonic cataract emulsifying scalpel

This utility model relates to a kind of ultrasonic therapy instrument, and is particularly a kind of as the ultrasonic surgical blade that hand-held treatment head is arranged in the ultrasonic cataract emulsifying operation device.

Ultrasonic surgical blade utilizes the supersonic vibration radiation, makes separate tissue, reaches the purpose of cutting, has characteristics such as the surrounding tissue do not damaged, amount of bleeding be little.At present, a kind of ultrasonic cataract emulsifying scalpel that flushing/attraction function can be provided is simultaneously arranged, its composition comprises that shell, horn, cutter head, ultrasonic transducer, water injection pipe, suction catheter, the water injection pipe of double as handle are connected with peristaltic pump, and suction catheter is connected with negative pressure device.The topmost characteristics of this cutter are that 1/2 complete wavelength is arranged, but it effectively utilizes size less, and stock utilization is lower.

The purpose of this utility model is: a kind of ultransonic ultrasonic cataract emulsifying scalpel of 1/2 complete wavelength that has is provided, especially provides a kind of oscillator in light weight, effectively utilize size bigger, the ultrasonic cataract emulsifying scalpel that the relative material utilization rate is higher.

The purpose of this utility model is achieved in that a kind of ultrasonic cataract emulsifying scalpel: comprise shell, horn, cutter head, back shroud, be loaded on the compositions such as ultrasonic transducer in the shell, ultrasonic transducer and horn are close to, cutter head is at the front end of horn, lead to the water injection pipe and the suction catheter that leads to cutter head of cutter head in the shell, it is characterized in that horn is 1/4 a wavelength length notch cuttype front shroud with distortion.

Characteristics of the present utility model are: have distortion 1/4 wavelength stairstepping front shroud, reduced in size for the handle front end, reducing handle weight provides design basis.Its compact dimensions, it is big to transmit ultrasonic energy, effectively utilizes size bigger, and the relative material utilization rate is higher.This utility model also has the I ﹠ A function simultaneously.

With reference to the accompanying drawings and in conjunction with the embodiments this utility model is described further:

Fig. 1 is a structural representation of the present utility model

Comprise shell 3, horn 4, horn 4 for 1/4 wavelength length notch cuttype front shroud with distortion, be to move back and dial shape or cylinder from coarse to fine as shown in the figure and round platform combination shape, front shroud covers ultrasonic transducer.The leading section of front shroud is that cutter head 1, emulsifying syringe needle 1 are again hollow pipes for the emulsifying syringe needle, and is glut shape, and the rear end that hollow pipe is communicated to scalpel always is connected with negative pressure device and picks out suction catheter 12.The 2nd, soft sheath wraps emulsifying syringe needle cutter head.Ultrasonic transducer 6 is a piezoelectric chip, and electrode 7 has wire connecting power in the side of wafer.Ultrasonic transducer and horn are close to, and are used to transmit ultrasonic energy.Ultrasonic transducer is loaded in the shell with horn, be provided with the water inlet pipe 9 that is connected and leads to cutter head with peristaltic pump between shell and the horn.Water proof ring 5 is with ultrasonic transducer sealing, and after back shroud 8 was positioned at horn 4, back shroud 8 also be the pipe of hollow, and the middle part is provided with one section flexible pipe 10, with the transmission of assurance energy.Base plate 11 is the shell (go up to connect and attract joint 12) of rearward end.

Claims

1. ultrasonic cataract emulsifying scalpel: comprise shell (3), horn (4), cutter head (1), be loaded on ultrasonic transducer (6) in the shell, composition such as water injection pipe (9), suction catheter (12), back shroud, ultrasonic transducer and horn are close to, cutter head is at the front end of horn (4), the water injection pipe and the suction catheter that leads to cutter head that lead to cutter head in the shell is characterized in that horn (4) is for having 1/4 wavelength length notch cuttype front shroud of distortion.