Systems and methods for transverse phacoemulsification
First Claim
Patent Images
1. A handpiece for phacoemulsification, comprising:
- a needle, wherein the needle has a distal end and a proximal end, wherein the distal end of the needle vibrates in at least a transverse direction and a longitudinal direction when power is applied to the handpiece; and
a horn, wherein the horn has a distal end and a proximal end, wherein the distal end of the horn engages the proximal end of the needle and one or more piezoelectric rings are coupled with the proximal end of the horn, wherein the proximal end of the horn has one or more notches distributed around an outer surface of the horn that move a center of mass of the horn offset from a central longitudinal axis of the horn;
wherein the power applied has a single effective operating frequency to vibrate the needle in the transverse and longitudinal directions;
wherein the one or more notches are configured to create a transverse node on a frequency spectrum and enable the distal end of the needle to vibrate in the transverse and longitudinal directions when the power is applied.
3 Assignments
0 Petitions
Accused Products
Abstract
A phacoemulsification handpiece for providing transverse phacoemulsification. The phacoemulsification handpiece may have a needle and a horn, wherein the distal end of the needle is configured to vibrate in a transverse direction and a longitudinal direction when power is applied to the handpiece. The horn may have one or more notches distributed around an outer surface of the horn, wherein the one or more notches enable the distal end of the needle to vibrate in the transverse and longitudinal directions when power is applied.
282 Citations
14 Claims
-
1. A handpiece for phacoemulsification, comprising:
-
a needle, wherein the needle has a distal end and a proximal end, wherein the distal end of the needle vibrates in at least a transverse direction and a longitudinal direction when power is applied to the handpiece; and a horn, wherein the horn has a distal end and a proximal end, wherein the distal end of the horn engages the proximal end of the needle and one or more piezoelectric rings are coupled with the proximal end of the horn, wherein the proximal end of the horn has one or more notches distributed around an outer surface of the horn that move a center of mass of the horn offset from a central longitudinal axis of the horn; wherein the power applied has a single effective operating frequency to vibrate the needle in the transverse and longitudinal directions; wherein the one or more notches are configured to create a transverse node on a frequency spectrum and enable the distal end of the needle to vibrate in the transverse and longitudinal directions when the power is applied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A handpiece for phacoemulsification, comprising:
-
a needle, wherein the needle has a distal end and a proximal end, wherein the distal end of the needle vibrates in at least a transverse direction and a longitudinal direction when power is applied to the handpiece; and a horn that includes; a distal end that engages the proximal end of the needle, and one or more notches distributed around an outer surface of the horn, wherein the one or more notches are located on a proximal end of the horn and are configured to move a center of mass of the horn offset from a central longitudinal axis of the horn, and create a transverse node on a frequency spectrum and enable the distal end of the needle to vibrate in the transverse and longitudinal directions when power is applied; and two or more piezoelectric rings that are coupled with the proximal end of the horn, wherein the two or more piezoelectric rings are arranged in a stacked formation along the central longitudinal axis and are staggered along an axis that is perpendicular to the central longitudinal axis.
-
Specification