Gentle Paws Design Studio can help. The head is essential to establish the type of snake to get the correct type of anti-venom. If recommended, do this after you are on your way.
Time is essential.
All cat caused wounds should be thoroughly cleaned as soon as possible after the infliction. There may be underlying injuries not as apparent as a bite wound. Contact your veterinarian. Use sterile dressings. Do not try to replace the organs yourself.