The meaning is very clear here, it's a pedal used in Surgeries to cut out the patient's applicable part to proceed the operation, forming a part of surgical instrument. Suggestions for your reference and selection, in Medical fields, especially in Operation, the word "dissection/ing" is preferred...

Hope this helps...

High-Frequency Electric Knife (Argon Gas) - China Electric Knife ...China High-Frequency Electric Knife (Argon Gas)and China Electric Knife ... (1)The device is the treatment equipment of the integration of high-frequency electrical ... can be widely used in surgery, endoscopic treatment and treatment of ... Foot pedal control is triple, cutting power (yellow) electrocoagulation ...
www.made-in-china.com/showroom/flythousand/product.../China... - 38k - Cached - Similar pages

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Note added at 6 hrs (2009-03-06 16:38:17 GMT)
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More precise term should be ...
“切割”踏板 == ELECTROCUTTING or ELECTROSECTION PEDAL.
“凝血”踏板 == Electrocoagulation pedal



Dermatology - Google Books Resultby Otto Braun-Falco, G. Plewig, H. H. Wolff, W. H ... - 2000 - Medical - 1853 pages
All other electrosurgery involves high-frequency alternating current and must be ... Electrocautery Electrocutting Electrocoagulation Electrodesiccation ...
books.google.com.ph/books?isbn=3540594523...