DE7420529U - BIPOLAR CUTTING ELECTRODE FOR HIGH FREQUENCY SURGERY - Google Patents

Description

Siemens Aktiengesellschaft Erlangen ,, JO. May

Henkestrasse 127

VPA 74 / 5O69 cage / cal

Bipolar cutting electrode for high frequency surgery

The invention relates to a bipolar cutting electrode for high frequency surgery with at least two against each other isolated metal parts carrying high frequency voltage and at a fixed distance from one another.

There are already known curette-shaped cutting electrodes that are provided with a spherical counter electrode, which is placed on the patient's body outside the effective zone of the active electrode. However, these electrodes are esp. throw the relatively thick ball egg sovrve counter electrode also because of their relatively large distance from the actual 2η

The cutting electrode is quite unwieldy and therefore practically does not allow smooth cuts. Thr scope is essentially restricted to neurosurgery .

The invention is based on these disadvantages to avoid and to create a bipolar cutting electrode for high-frequency surgery that is much more handy is, a smoother cut is allowed both on the body surface and in body cavities and thus overall seen a wider application than the known cutting electrodes.

The object is achieved according to the invention in that the metal parts Metallsp? tzer. are in the effective zone of the electrode arranged one behind the other in the cutting direction are.

The cutting tips arranged one behind the other allow a smoother cut because at least two are always behind Tips are involved in cutting at the same time. Since the metal tips are also in the Active zone of the electrode are immediately adjacent, result smaller V.'irkflachen so that the electrode at Cutting becomes more manageable overall and is particularly suitable for cutting on small surfaces, e.g. also in body cavities well suited.

In order to enable the electrode to be held at an angle when cutting, the metal tips should expediently be arranged in the longitudinal direction of the electrodes: - more offset. If there are more than two metal brackets, these should be arranged in a row along a round arch, e.g. au oh lanrettenfi-shaped cein can be arranged offset from one another.

In a preferred embodiment of the invention
The cutting electrode should also remove the metal tips by

geaunlif f eiie ends vuii wires ouer pins ^ euliuct Sciiij f which are embedded in an insulating body in such a way that they
protrude slightly in the cutting zone.

In the drawing, an embodiment of the subject matter of the invention is shown schematically. Show it:

1 shows a bipolar cutting electrode according to the invention
in perspective view,

Fig. 2 is a circuit diagram for the interconnection of the

individual cutting tips of the electrode according to FIG. 1.

In Fig. 1 are 1. 2, 5 and 4 cutting pins made of metal %

(e.g. molybdenum wire or the like with approx. 0.8 mm diameter) be JjFi

draws that in an insulating body 5 *, for example, from fi

Glass, are embedded in such a way that they are at the front -, \

of the electrode (frontal action zone) something from the %

Insulator protrude. The insulating body 5 is long $

elongated and flat as well as rounded on its front side. The |

Pins 1 to 4 follow the arch with their tips |

accordingly in the longitudinal direction of the electrode more or less |

arranged offset from one another. $

Pins 1 to 4 are connected together as shown in FIG. 2, J

that each pair of pins 1 and 5 on a terminal p

part 6 for connection to one pole and pins 2 and g

4 to a connection pole 7 for connection to the other pole of the £

(not shown) high frequency source. In execution |

Approximation example according to Fig. 1, the connection poles 6, 7: ■ {

as coaxial connector with inner conductor 7 and outer conductor 6 %

educated. By means of the plug connection 6, 7 the |

Electrode preferably on the cable handpiece of the high-frequency |

Plug in the replaceable surgical device. Electrode handpieces are known for themselves, so that a more detailed description

actual cutting part 1 to 5 of the electrode and electrode handpiece The electrode according to FIG. 1 is also smelled with a further insulating jacket 8 made of insulating Kv; e.g. silicone rubber, coated.

In the operating state of the electrode according to FIGS. 1 and 2 there is always between two adjacent hard ones from the insulating body 5 protruding tips of the metal pins 1 to 4 generate a high-frequency field that is used to separate the tissue can. The effective cutting area between the individual pins is very small, so that the electrode can also be used for the smallest body cuts on the surface of the body Body cavities are suitable. Since the cutting pins 1 to 4 in the cutting direction of the electrode jev.c ■.:. ? in a row are arranged, results in a correspondingly smooth cut.

The embodiment according to FIGS. 1 and 2 preferably describes an electrode with a total of four cutting pins. It should go without saying, however, that one is at other desired cutting edge shapes through appropriate training the insulating body or a corresponding arrangement of more or less metal pins for each desired application can adjust.

Claims (1)

• * * * "" * * * IHI Ii ti New protection claim 1 Our mark (replaces "previous claims 1-4) VPA 74/5069 File number G 74 20 529.1 15th Bipolar cutting electrode for high frequency surgery with a plurality of mutually insulated and Carrying high frequency voltage as well as at a fixed distance metal tips standing to one another, the metal tips being cut by ground ends of wires or Pins are formed which are embedded in an insulating body derail that they protrude in the cutting zone, characterized thereby · .-. t that the metal tips (1 to 4) are longitudinally correct in the electrodes in a row along a round arch facing each other; are arranged offset. Kue 5 Kof / 02.15.1980