Devices and methods for the removal of lenticular tissue
AssigneeCarl Zeiss Meditec Cataract Technology Inc.
InventorsLuke W. Clauson, Maria Tsontcheva Guguchkova
Life of this patent
Estimating the term…
Abstract
An exemplary surgical device includes a shaft with a lumen defined therethrough and an element movable from a stored position to a deployed position in which a larger portion of the element extends out of the distal end of the lumen; wherein motion from the stored position to the deployed position causes a first leg of the element to advance distally relative to the distal end of the shaft, and causes a second leg of the element to move proximally relative to the distal end of the shaft.
Claims30
A device for applying a cutting force to a lens within a capsular bag of an eye, comprising:
- a tubular shaft comprising an opening in a distal portion of the tubular shaft;
- a sectioning element movable from a first, insertion configuration with at least a portion of said sectioning element being positioned within the tubular shaft towards a second, fully expanded configuration defining an open area sized and shaped to surround at least a portion of the lens within the capsular bag;
- and
- an actuator operatively coupled to the sectioning element, for tensioning the sectioning element to reduce the size of the open area and cut the lens positioned within said open area,
- wherein the distal portion of the tubular shaft and the sectioning element in the first, retracted configuration are both sized for insertion through an incision in the cornea of the eye,
- wherein, when the sectioning element is in the second, fully expanded configuration, said open area is defined, at least in part, by a first portion of a first leg of the sectioning element and a first portion of a second leg of the sectioning element, while a second portion of the first leg and a second portion of the second leg are positioned internal to the tubular shaft, and
- wherein a first portion of said open area is located distal of the opening and a second portion of said open area is located proximal of the opening.
A device for applying a cutting force to a lens within a capsular bag of an eye, comprising:
- a shaft comprising a lumen having an opening in a distal portion of the shaft;
- and a sectioning element capable of being configured into an insertion configuration, wherein the distal portion of the shaft and the sectioning element in the insertion configuration are sized for insertion through an incision in the cornea of the eye,
- wherein the sectioning element in the fully expanded configuration comprises an approximately closed loop shaped and sized to surround a portion of the lens within the capsular bag, the approximately closed loop defined, at least in part, by a first portion of a first leg of the sectioning element, a first portion of a second leg of the sectioning element, and a merging point near the opening, wherein the first portions of the first leg and the second leg merge into proximity to one another at the merging point to form the approximately closed loop while a second portion of the first leg and a second portion of the second leg remain within the lumen of the shaft, and
- wherein a distal portion of the approximately closed loop extends distal to the merging point and a proximal portion of the approximately closed loop extends proximal to the merging point.
Dependencies are inferred from the claim text.