Until using Keller funnel, Surgeons squeeze the implants with one hand and push it with the other hand.
These techniques are quite different according to the surgeon's skills and experiences.
But even with good skill, the implant contacts or scrubs with skin and this may affect the results.
For reducing the injury to the implants during inserting the implants, some sleeves have been used but hard to use.
A genius thought about funnel for gently inserting the implants.
And using Keller funnel reduce implant injury and possibility of capsular contracture and infection and incision length.