Fantasy medical equipment for an exam

Is there something that you would love to have in a med-fet exam but is either: not available for the most part, or doesn't exist?

For something that I would love to have more available in play exams is ultrasound. Yes, I know there is the Butterfly Ultrasound, but I doubt anyone is going to spend $3000 all said and done for it just for play exams. I would love having the doctor looking at my heart beating, looking at my blood vessels, and being able to do a doppler too. If it could record my heart sounds at the same time? Even better! Incredibly hot if you ask me.

A theoretical device that I would love to actually exist is a device that would would be attached to my penis during erection. It would be able to measure the arterial BP going through the penis, would measure ejaculatory pressure in the urethra, and would also measure the level of ejaculation produced. A very hedonistic device to be sure, but I think it would really fun - it measures something and just adds to the kinkiness in my imagination.

My favourite fantasy is to have a genital examination with the use of original 1800 special instruments designed for prepuce dilatations and circumcisions. They are almost unobtainable nowdays. They consisted in clamps, forceps and tools with blades such as the Clèment-Simon's dilator which similar to a flower, controlled by a screw purposely designed to perform huge preputial dilatations.

My local hospital has an historical museum of medical instruments and the curator is a retired ObsGyn lady. She showed me a complete set lined in a showcase dedicated to the more general category "Male genitalia". Knowing that each shown instrument has hundred years and decades of use in the hospital gave me a weird feeling about the patients and what they had to undergo. Hearing her describing exactly how they were used on the penile tissues made my heart rush, feeling extremely aroused and close to ask her to get a demonstration on my body as a model patient.

One recurring fantasy is of an alien abduction. They are able to have all kinds of bizarre medical instruments, and I feel no obligation to think about what actual purpose they serve, how they work, or even if they could possibly exist. One example is a terrifyingly long needle/syringe device that can both extract and inject fluids/material. Despite being painful, it does not inflict any lasting injury. I once rp'd such a scenario on line, and another imaginative device was a kind of metal, robotic "worm" that was inserted into the anus and crawled all the way up and out the mouth. Absurd and impossible, but fun to imagine!