US 12,076,232 B2
Injector having a first piston and a second piston
Martin Kelp, Berlin (DE); Alfred Rinman, Hamburg (DE); Hadi Moein, Berlin (DE); and Niklas Damm, Berlin (DE)
Assigned to Carl Zeiss Meditec AG, Jena (DE)
Filed by Carl Zeiss Meditec AG, Jena (DE)
Filed on Dec. 14, 2023, as Appl. No. 18/540,439.
Application 18/540,439 is a continuation of application No. PCT/EP2022/066976, filed on Jun. 22, 2022.
Claims priority of application No. 10 2021 116 615.2 (DE), filed on Jun. 28, 2021.
Prior Publication US 2024/0108457 A1, Apr. 4, 2024
Int. Cl. A61F 2/16 (2006.01)
CPC A61F 2/167 (2013.01) [A61F 2/1672 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An injector for inserting an intraocular lens into a capsular bag of an eye, the injector defining an injector axis and comprising:
an injector body having an injector tip defining an opening;
said injector body further having a proximal end defining a proximal end region with said proximal end facing away from said opening and having a distal end defining a distal end region;
a first piston directed toward said opening and being configured to contact and displace said intraocular lens;
a second piston disposed in said proximal end region and being configured to be operable from outside of said injector;
said first piston and said second piston each being configured to be longitudinally displaceable along said injector axis in said injector body so as to be movable between a decoupling state and a coupling state;
said first and second pistons are in said decoupling state when said first and second pistons are displaceable longitudinally relative to each other and conjointly define a first longitudinal extent along said injector axis; and,
said first and second pistons are in said coupling state when said first and second pistons are rigidly coupled together in a direction of said injector axis and said first and second pistons conjointly define a second longitudinal extent along said injector axis greater than said first longitudinal extent; and,
a handle disposed in said distal end region of said injector body and being movable relative to said injector body and being configured to be manually operated from outside of said injector and to be coupled to said first piston so that when said pistons are in the decoupling state, said first piston is displaced toward said opening and relative to said second piston by manually moving said handle relative to said injector body along said injector axis away from said proximal end such that said first and second pistons are brought into said coupling state and, by way of contact between said first piston and said intraocular lens, causing said intraocular lens to be shifted in said injector tip toward said opening.