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I understood you want to try and retrieve the film leader out of the catridge, so you can finish the roll.
You could use a manual camera for this if you have one; put the film in, set the camera to the fastest speed and smallest aperture, put a cap on the lens (or hold the camera under you sweatshirt) so you photograph "nothing" over the existing image(s).
Shoot blanks, so to say.If you only have (or really like to finish the roll with) the automatic Konica (which will not allow you to set a fast speed and small aperture manually) you can trick the camera into thinking there's a very bright scene to photograph by aiming at a bright light, half-press the shutter (to make the camera meter the light / set focus), and then put it under your sweatshirt and fire, so it doesn't actually take in any light while it takes the photo.
This works with most automatic cameras but I hear the half-press thing is a bit of a faff with those Konicas, so you might just try to shoot "darkness" (at night, camera under sweatshirt etc.) - it might leave the shutter open for seconds, you will hear when it's done by the sound of the film advancing.Repeat the process 17 times if that's what the counter said before you accindentally took the batteries out.
Search for "get film out of canister" on youTube.
It's a faff, but it works if you're patient.
This method was what I used - https://www.youtube.com/watch?v=Uc00ULY7cYU
There's also special tool that help you pull the leader out but I never used those.
Oh yea and obviously if you put the film back in your automatic camera you have to shoot black frames over the already-shot images : )