Question Regarding the Pump

[Chris1967]

Dear Brothers,
I would like to know how the pump actually works internally—from a technical standpoint. I haven't been able to find anything about this online. I assume the underlying principle is the same for all implants. In my view, there must be a valve installed inside the rectangular housing; but how is everything connected to one another? Perhaps you guys can shed some light on this. Is there a genius among us who can offer some insight?

[lasthope2.0]

I found a snippet about the AMS 700 MS Pump. Maybe someone can explain this with an animated video.

Reference:
Lund JJ. Biomedical engineering and erectile restoration: design considerations for urologic prosthetics. Asian J Androl. 2020 Jan-Feb;22(1):15-19. doi: 10.4103/aja.aja_115_19. PMID: 31719264; PMCID: PMC6958988.

https://journals.lww.com/ajandrology/fu ... on_.4.aspx

During an inflation cycle, the initial AMS 700™ with MS Pump™ bulb squeeze moves the poppet valve to its far-sealing position (Figure 3). The resulting pressure opens the cylinder check valve while stabilizing the poppet valve at its far-sealing position (to prevent fluid flow into the reservoir when the pump bulb is squeezed). A certain ejection fraction of pump bulb volume is transferred into the cylinders with each pump bulb squeeze. After each release, the pump bulb rebounds to create a vacuum for refilling. This vacuum draws the reservoir check valve away from its far-sealing position, where it resides in between the far- and intermediate-sealing positions. When the poppet is in this position, it allows fluid flow from the reservoir and subsequent pump bulb refill. During inflation, cylinder pressure closes the cylinder check valve to prevent deflation.

For deflation, a 2–4-s squeeze of the deflation button moves the poppet valve between the sealing annulus and skirt and unseats the cylinder check valve, thereby permitting flow along two potential paths to facilitate the momentary squeeze deflation behavior. The first pathway is pressurized cylinder fluid flow along and over the (unsealed) cylinder check valve and poppet valve. This first pathway remains open while the deflation button is pressed. Spring action pushes the poppet valve into the annulus to seal off the first pathway when the deflation button is released. Provided the deflation button was held for 2–4 s, fluid will continue to flow along a longer pathway in the MS Pump™ to deflate the cylinders after the deflation button is released. Resistance to autoinflation is established by the poppet valve and skirt. A ball check valve closes off the secondary fluid pathway, arresting flow from a pressurized reservoir.