Injector, intraocular lens system, and related methods

Abstract

An intraocular lens system may include a base that may include an annular body, an opening extending through the annular body in an axial direction of the annular body, and a recess extending circumferentially about the opening. The system also may include a lens that may be insertable into and removable from the recess. The lens may include a central optic, a first tab protruding radially away from the central optic, and a second tab protruding radially away from the central optic. The second tab may be more resistant to compression in a radial direction than the first tab. The first tab may include a first arm protruding radially away from the central optic, a second arm protruding radially away from the central optic and extending away from the first arm, and a third arm extending from the first arm to the second arm. Movement of one or more of the first, second, and third arms may result in deformation of the first tab.

1 - 20 . (canceled) 
     
     
         21 . An intraocular lens system, comprising:
 a base, comprising:
 an annular body including an upper rim and a lower rim, 
 an opening extending through the annular body, 
 a first pair of diametrically opposed folding notches in the upper rim, and 
 a recess extending circumferentially about the opening; and 
   a lens configured for insertion into and removable from the base, the lens comprising:
 a central optic, 
 a first tab extending radially away from the central optic, the first tab including a first arm extending radially away from the central optic, a second arm extending radially away from the central optic, and a third arm extending between the first arm and the second arm, 
   
       wherein one or more of the first, second, and third arms is configured to deform to move the first tab between a compressed state and an extended state, and wherein in the extended state of the first tab, an obtuse angle is formed between the first and second arms. 
     
     
         22 . The intraocular lens system of  claim 21 , wherein the lens further comprises a second tab, the second extending radially away from the central optic, wherein the second tab is more resistant to compression than the first tab. 
     
     
         23 . The intraocular lens system of  claim 21 , wherein:
 the first arm includes a first hinge portion,   the second arm includes a second hinge portion, and   the third arm includes a third hinge portion, wherein the first, second, and third hinge portions are configured to bend as the first tab moves between the extended and compressed states.   
     
     
         24 . The intraocular lens system of  claim 21 , wherein the first, second, and third arms, and the central optic, form a closed ring surrounding an aperture, and wherein a width of the aperture narrows as the first tab moves to the compressed state. 
     
     
         25 . The intraocular lens system of  claim 21 , wherein a central portion of the third arm includes an apex of the third arm, the apex being a radially-outermost portion of the third arm. 
     
     
         26 . The intraocular lens system of  claim 21 , wherein each of the first, second, and third arms has at least one linear section. 
     
     
         27 . The intraocular lens system of  claim 25 , wherein the third arm has a first linear section and a second linear section, the first and second linear sections being linked at the apex. 
     
     
         28 . The intraocular lens system of  claim 27 , wherein an obtuse angle is formed between the first and second linear sections. 
     
     
         29 . The intraocular lens system of  claim 21 , wherein the base further comprises a pair of haptics extending radially outward from the annular body and a second pair of diametrically opposed folding notches in the lower rim. 
     
     
         30 . The intraocular lens system of  claim 29 , wherein the first pair and the second pair of diametrically opposed folding notches are configured to provide a folding crease for folding the base. 
     
     
         31 . The intraocular lens system of  claim 29 , wherein the first pair and the second pair of diametrically opposed folding notches are aligned with a mid portion of each of the haptics. 
     
     
         32 . The intraocular lens system of  claim 21 , wherein the lens further comprises a plurality of holes and at least one hole is located between the first arm and the second arm. 
     
     
         33 . An intraocular lens system, comprising:
 a base, comprising:
 an annular body including an upper rim and a lower rim, 
 an opening extending through the annular body, 
 a first pair of diametrically opposed folding notches in the upper rim, and a second pair of diametrically opposed folding notches in the lower rim, and 
 a recess extending circumferentially about the opening; and 
   a lens configured for insertion into and removal from the base, the lens comprising:
 a central optic, and 
 a fixed tab protruding radially away from the central optic, the fixed tab including:
 a first side projecting from a first radially-outer surface of the central optic, wherein a first angle is formed between the first side and the first radially-outer surface, and 
 a second side projecting from a second radially-outer surface of the central optic, wherein a second angle is formed between the second side and the second radially-outer surface, 
 wherein magnitudes of the first and second angles are different. 
 
   
     
     
         34 . The intraocular lens system of  claim 33 , wherein the lens further comprises an actuatable tab protruding radially away from the central optic. 
     
     
         35 . The intraocular lens system of  claim 34 , wherein the fixed tab is more resistant to deformation in a radial direction than the actuatable tab. 
     
     
         36 . The intraocular lens system of  claim 33 , wherein the lens further comprises a plurality of holes and at least one hole is located where the fixed tab meets the central optic. 
     
     
         37 . The intraocular lens system of  claim 33 , wherein the fixed tab includes at least one notch located at the first side, the second side, or both. 
     
     
         38 . The intraocular lens system of  claim 33 , wherein the base further comprises a pair of haptics extending radially outward from the annular body. 
     
     
         39 . The intraocular lens system of  claim 38 , wherein the first pair and the second pair of diametrically opposed folding notches are aligned with a mid portion of each of the haptics. 
     
     
         40 . The intraocular lens system of  claim 38 , wherein each haptic includes a hole adjacent the annular body.