"Young adult" novel involving a light sail that cuts someone's throat and the protagonist uses a ballpoint pen as an air tube so he can breathe. Probably had the word "star" in the title. It might have involved a young humanoid alien too.
I believe this book is "Starship on Saddle Mountain" by Atlantis Hallam. I remember the tracheotomy using a ball-point pen during a race around Saturn, but don't own the book and haven't read it in decades, so I can't quote any of it.
The ebook is available on Amazon.