The robot is here to draw your blood

A company has produced prototype robots that can draw blood from human arms. Here is a 48 second video showing one of them in action.



Using an infrared camera, the robot identifies a suitable vein and accesses the vein with ultrasound guidance.

A second video, not embedded in this post, explains that the robot is about 83% successful at drawing blood which compares favorably to the success rate of experienced human phlebotomists. The robots inventor hopes to refine the procedure to get the success rate up to 90%.

It also says that there are 9 billion blood draws per year in the United States suggesting that a market is certainly there.

The second video also mentions the discomfort patients experience when a phlebotomist misses or damages the vein.

However, the robot needs quite a bit of help from a human phlebotomist both before and after the actual blood draw takes place.

The robot cant apply a tourniquet, cant wipe the skin with alcohol, can’t take the cover off the needle, once the vein is accessed cant actually remove the blood from the vein with a syringe, cant take off the tourniquet [the human assistant didn’t do it correctly either*], can’t apply pressure to the puncture site, cant put a Band-Aid on the skin, and can’t safely dispose of the needle.

It’s not clear what the robot would do if a patient flinches or withdraws his arm. Patients have been known to do those things.

For the foreseeable future, the robot would have to be accompanied by a human. So whatever the cost of the robot, personnel would not be eliminated.

Its a clever idea, but I don’t think a robot will be drawing your blood any time soon. ________________________________________________________
*One must undo the tourniquet before taking the needle out of the arm or the back-pressure will cause bleeding and/or a hematoma

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German airliner crash A system error with a system solution

From the Associated Press: Airlines around the world on Thursday began requiring two crew members to always be present in the cockpit, after details emerged that the co-pilot of Germanwings Flight 9525 had apparently locked himself in the cockpit and deliberately crashed the plane into the mountains below.

This represents an organizations typical response to a problem. The crash, which by all accounts was caused by a single deranged individual, has been perceived as the result of a “system error” and will be dealt with as such.

The idea that a flight attendant going into the cockpit whenever one of the pilots has to pee will prevent anything seems a bit absurd to me. How is a 5’2” 120 pound female flight attendant supposed to stop a 6’3” 210 pound pilot who is hell-bent on committing suicide by airplane?

When I tweeted a similar thought yesterday, someone suggested that she could simply sound an alarm and unlock the cockpit door. I suppose that’s true as long as the crazed pilot does not punch her in the face and knock her out or shoot her first.

After 9/11, a federal law was passed allowing pilots who were properly screened and trained to carry guns. If an armed pilot decides to commit suicide, an unarmed flight attendant will not be able to stop him or her.

According to a CNN story, Andreas Lubitz, the pilot who drove the plane into the mountain, had passed all medical tests before being hired. He recently had been given a medical leave note by a doctor. However, Lubitz ripped it up and threw it in a wastebasket in his apartment. He did not disclose the fact that he had been undergoing medical treatment to the airline. So much for self-reporting which is standard for pilots.

Why didnt the doctor tell the airline? I dont know. Do they have HIPAA in Germany?

The two people in the cockpit rule is smoke and mirrors. The airlines can now say that they have taken steps to prevent something like the Germanwings crash from happening again so dont worry, its still safe to fly. But as I have pointed out, a determined maniac will be able to easily overcome this system solution.

I am reminded of the proposals like arm the janitors, arm the teachers, or give them shields or scissors that always come forward after school shootings.

Footnotes:

1. "Two people in the cockpit” is not an FAA regulation but is said to be a standard policy for US airlines. Its purpose is not to prevent a suicide but to have someone available to let the other pilot back into the cockpit in case the pilot who did not leave passes out or is otherwise disabled.

2. The Germanwings incident represents an unintended consequence of reinforcing and locking cockpit doors after 9/11.

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