Actually it is interesting that all the research points to the HVDC shock stopping necrosis of the wound instead of contributing to it. The sawyer extracter however, may do as you say. It is interesting that most of the "experts" who say HVDC for bites is harmful, or won't work, either haven't used the method or have waited way too long before using it.
If you have ever done this to yourself, you realize that the shock treatment when administered properly (read very short bursts) does not cause shock to the system at all. There are bunches of doctors and experts out there who say it is a waste of time, when they have never used HVDC as first aid. Those (mostly doctors who have no other options, ie. in the third world) who do try it, become believers very quickly.
It takes quite a long time for the vitamin c to work against the venom if you take it oraly. However if you inject it under the skin or into the mustle near the bite site it should go into the lymph system. That is exactly where the venom is residing and travelling, so it has a very good chance to mingle with the venom and combat it. Also we are talking about large levels of vitamin c, 15-20 ccs (for a grown person).
There is a good link on the subject of vitamin c (albeit anecdotal) at
http://www.lowchensaustralia.com/vitc.htmFor those who are the research types, this is the information of the studies that have been published.
The Lancet, July 26 1986 pp 229
"HIGH VOLTAGE SHOCK TREATMENT FOR SNAKE BITE"
The Lancet, December 6 1986 pp 1335
"BIOLOGICAL BASIS FOR HIGH VOLTAGE SHOCK TREATMENT FOR SNAKE BITE"
Oklahoma State Medical Association journal Vol. 83, January 1990 pp 9-14
"Treatment of Venomous Bites by High Voltage Direct Current" by Carl D. Osborn, MD
Oklahoma State Medical Association journal Vol. 84, June 1991 pp 257-260
"Treatment of Spider Bites by High Voltage Direct Current" by Carl D. Osborn, MD
Oklahoma State Medical Association journal Vol.85, July 1992 pp 331-333
"Multiple HVDC Shocks as First Aid or Therapy for Venomous Bites and Stings" by Carl D. Osborn, MD