As a former cop and someone who is highly trained in Defensive Tactics I can tell you this is something that I have thought about.
However, one needs to remember your job is to help the patient and not to inflict further pain. Of course the top priority is your safety.
With that being said, why are you being attacked? Is it because the patient is under the influence of drugs or alcohol? Possible head injury? What about a mental disorder or other condition that affects the mental ability?
Everyone has the right to defend themselves from attack and EMS is no exception. The key here is to use REASONABLE, PRUDENT and JUSTIFIABLE force to protect you and your partner.
The majority of tactics we use in law enforcement are taken from the martial arts - kung fu and jujitsu being the most common. Our tactics are designed to obtain compliance without inflicting too much pain or permanent injury. Sometimes the smallest thing can be the most effective. Finger locks, wrist manipulation and arm bars are all tactics that are highly effective and can be taught to anyone in a matter of minutes. The key to a good technique is your ability to remember how to do it correctly.
Being in EMS you will have the added burden of having to prove you were really a victim of attack and that the aggressiveness wasn't a result of something else like I mentioned above. It would not hurt to learn a few control techniques though. Our tactics are proven in court and are deemed medically safe. My advice would be to contact a police DT instructor and see if they can put on a quick class for you.
Here in WA State, Assaulting an EMT / Medic (or any other healthcare worker) is Assault 3rd and is a class C felony (same as assaulting a cop). I have personally arrested a couple of people for assaulting EMT's but it was rare and usually it was either family or a bystander.
Your safety is number 1.
While I whole heartedly agree with most of what you said....... as a law enforcement DT instructor..... most officers are not taught "self-defense" or anything truly "defensive" in LEO style DT training.
The average officer is trained in the "Mechanics of Arrest and Control". Those two things have no place in EMS.
I have spend the last 17 years researching this particular subject as it relates to EMS/Fire and ED staff.
An issue that has come to light is........... because EMS is such a young profession, we are still learning our "culture" and our place. Since we are so closely associated with police, on so many scenes....... we have learned many tactics or techniques through osmosis.
This osmosis type of training has its pros and cons. Here are a couple of the cons.......
Police officers have no duty to retreat. EMS should retreat.
Police have hundreds of hours of training in how to put a person into temporary restraints.... after all...regardless of the tool (MACE, Baton, Taser) they all end with the restraint tool of handcuffs. EMS gets an average of 4-8 hours of training.......if that...... on "restraints".
The average officer does NOT jump to hands on first thing if faced with a resisting/assaultive suspect. Instead they (usually) chose a tool such as a Taser or OC spray..... EMS has no tools for if empty hand skills fail.
The mindset of an officer is "I will win". Meaning they have resolved to do whatever it takes to take a suspect into custody. EMS must have a mindset of ESCAPE as the priority, not "custody".
This subject takes hours to explain. It's difficult to explain in a short setting. But the short of it is this.....
In EMS we must train in 4 specific areas when it comes to personal safety:
1) Mind- getting past the initial resistance to defend yourself
2) Street- train in skills that work more often than not
3) Media- Skills (verbal and physical) need to look good on camera
4) Courtroom- through skills that are "reasonable", documentation and mandated reporting of assaults to supervisors and police.
So if you chose to train..... there is no real difference of what "techniques" or "system" you train in.....just make sure it meets the "4" areas I listed. Because self-defense for EMS is so much more than just "techniques".