Medical high frequency surgical instrument including pivotable electrode support

Abstract

The present invention proposes a manually operable HF instrument in a bipolar configuration, said manually operable HF instrument comprising: a jaw portion consisting of two electrode legs that can face each other like clippers or scissors and an instrument handle for operating and activating the jaw portion. A separate electrode mount is hinged to at least one electrode leg of the jaw portion so as to be pivotable relative to the electrode leg, the electrode in turn being resiliently / compliantly mounted on the electrode mount.

Description

technical field [0001] The invention relates to a medical HF device (TFT device) according to the preamble of claim 1 . Background technique [0002] In high-frequency surgery (hereinafter also referred to as HF surgery), an alternating current with a high frequency is guided through the human body or a tissue region of the human body in order to specifically destroy or cut tissue at a defined location. A significant advantage over traditional cutting techniques using a scalpel is that bleeding can be stopped by closing the affected blood vessel during cutting. Therefore during resection of tissue, for example, as in the case of partial lung resection or hepatic lobectomy, such interventions are not performed as usual with the aid of clamp suturing devices; Electric current to "weld" or "seal". The advantages of this approach will be evident in the absence of implants (such as metal clips) that remain in the body. [0003] Basically, HF electrosurgery can be divided into ...

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Problems solved by technology

[0028] However, in the case of using bipolar surgical HF instruments (TFT instruments), preferably consisting of two electrode legs that can be pivoted in the manner of scissors or pliers, there is the following fundamental problem: Finally, the opposing HF electrodes (sealing / welding electrodes) are not in a precise parallel orientation so that the clamping pressure applied to the tissue clamped between the electrodes is not uniform along the electrodes

Because clamping pressure is one of those above parameters that has a significantly greater impact on treatment outcome, uneven clamping pressure has a negative impact on seam quality along both electrodes

Furthermore, an irregular gap width implies an irregular flow of current over the length of the electrode, which is also detrimental for the treatment outcome (coagulation quality)

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