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Hf surgery generator and method for operating hf surgery generator

A technology of scalpel and generator, which is applied to the parts of surgical instruments, surgery, heating surgical instruments, etc., can solve the problems of low efficiency and achieve the effect of improving efficiency and simple structure

Active Publication Date: 2012-05-30
ERBE ELEKTROMEDIZIN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The efficiency of the device is very low

Method used

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  • Hf surgery generator and method for operating hf surgery generator
  • Hf surgery generator and method for operating hf surgery generator
  • Hf surgery generator and method for operating hf surgery generator

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Experimental program
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Embodiment Construction

[0025] in the attached figure 1 The power supply unit is denoted by reference numeral 10 in the circuit shown, only the DC / DC converter in the power supply unit and the capacitor C at the output are drawn. Of course, other converter devices are also provided for supplying the DC / DC converter from the AC mains.

[0026] The generator includes an oscillator circuit C R and the output transformer T R The (primary) winding W 1 , and through the transistor T 2 Connect to capacitor C. Transistor T 2 The control input b of is connected to the controller 20, so the controller can control the transistor T accordingly 2 And in the oscillation circuit C R -W 1 Oscillation is generated in the secondary coil W A and series oscillator circuit L A 、C A the oscillation as the output voltage U a Transfer to (not drawn in the figure) high-frequency surgical instrument.

[0027] Transformer T R The other winding W 2 One end via the diode D 1 and transistor T 1 It is connected to...

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PUM

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Abstract

In order to be able to abruptly terminate the output signal of an HF surgery generator, ohmic loads have been previously used. The invention relates to an HF surgery generator having a power supply having at least one storage capacitor, a controllable switching device having at least one energy store, such as a transformer, by means of which an HF output signal that can be fed to an HF surgery instrument is generated, wherein a feedback device is provided between the energy store and the storage capacitor and a controller is further used, controlling the switching device and the feedback device such that whenever the HF output signal is to be terminated, the feedback device allows current flow at least part of the time and the energy store in the storage capacitor is at least partially discharged.

Description

technical field [0001] The invention relates to a high-frequency scalpel generator according to the preamble of claim 1 and to a method for operating the high-frequency scalpel generator. Background technique [0002] High-frequency scalpel generators are increasingly used to cut and coagulate tissue. One of the advantages of high-frequency surgical cutting compared to mechanical cutting can be seen in the hemostasis of the incision edges, achieved especially by thermal coagulation. The depth of the coagulation zone depends here primarily on the bleeding of the treated tissue, and it is therefore required for the high-frequency scalpel generator to be able to adjust the depth of the coagulation zone as reproducibly as possible. What is important here is in particular the shape of the high-frequency output signal of the high-frequency scalpel generator, and in particular the peak-to-rms ratio. An amplitude-modulated high-frequency voltage (current) is used for this purpose,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12
CPCA61B18/1206
Inventor H·沙尔M·弗里茨
Owner ERBE ELEKTROMEDIZIN GMBH