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COSO, an ultrasound-based and reversible approach to male contraception

jamesdysonaward.org

1–10 of 71 posts

Re: COSO, an ultrasound-based and reversible approach to male contraception

#2
I'd love to have effective male contraception.

But the previous work on this doesn't make it look like it's the answer: https://www.parsemus.org/humanhealth/ultrasound-male-contrac...

See the section "Effective contraception in humans remains elusive"

Re: COSO, an ultrasound-based and reversible approach to male contraception

#3
I see a couple of acceptance problems with the device.

First, men a notoriously squeamish when it comes to their testicles. "Heating" without telling the temperature won't fly with many. I guess it doesn't have to be hot as it probably only needs to be warm enough to relax the cremaster muscles. If it has to be uncomfortably hot, I see little chance in the market.

Second, I'd expect the ultrasound to hurt. The epididymis is pretty sensitive to pain.

Third, it will feel like gambling as the female partner doesn't really know whether all sperm is killed or whether she will end up pregnant. And for the male, it will be a leap of faith as well. That should improve if a lot of users report no unwanted pregnancies, but in the beginning...

Re: COSO, an ultrasound-based and reversible approach to male contraception

#6
I'd love to see more innovation happening in this space. The one project I followed for a while seems to have stalled (or never really got off the ground) -- https://www.parsemus.org/humanhealth/vasalgel/ (which had solid results in India but got patented and locked up by a non-profit)

Re: COSO, an ultrasound-based and reversible approach to male contraception

#9

I wonder how long the effect lasts? How often would a man have to do this to maintain continuous contraception? Seems like there might be some long term effects from repeated ultrasonic treatment of any human tissue.

~2 weeks

Re: COSO, an ultrasound-based and reversible approach to male contraception

#10
post #3

I see a couple of acceptance problems with the device. First, men a notoriously squeamish when it comes to their testicles. "Heating" without telling the temperature won't fly with many. I guess it doesn't have to be hot as it probably only needs to be warm enough to relax the cremaster muscles. If it has to be uncomfortably hot, I see little chance in the market. Second, I'd expect the ultrasound to hurt. The epidid…

> First, men a notoriously squeamish when it comes to their testicles.

That's quite an inaccurate blanket statement.

> Second, I'd expect the ultrasound to hurt.

Ultrasound treatments are actually used to treat pain. Maybe you have evidence of ultrasounds causing pain, but I can't find anything of the sort.

> Third, it will feel like gambling as the female partner doesn't really know whether all sperm is killed or whether she will end up pregnant.

Unprotected sex is always gambling, for BOTH parties, not just the female.

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