Dynamic support for ophthalmic device
A small gauge surgical instrument is shown with advantages such as diminished “play” at the tip. A surgical instrument assembly is also shown with support along a length of the instrument that can be selected by the surgeon. Devices and method described provide adjustability of the instrument without protruding into a gripping surface of the instrument.
1 . A method, comprising:
inserting a small diameter instrument into an incision in an eye;
contacting an outer surface of the eye with a distal portion of a support frame;
extending the small diameter instrument through the support frame and into the eye;
sliding the support frame freely along a length of the small diameter instrument, wherein the distal portion of the support frame is pressed to maintain contact with the outer surface of the eye by a biasing device; and
adjusting a biasing force applied to the support frame at a given amount of extension.
2 . The method of claim 1 , further including rotating the eye by moving the small diameter instrument against a side of the incision and using the support frame to increase stiffness of the small diameter instrument.
3 . The method of claim 1 , wherein maintaining contact with the outer surface of the eye includes biasing the support frame with a spring.
4 . The method of claim 1 , further including operating a supply line through an interior of a base unit to the small diameter instrument, wherein the support frame is spaced apart from the supply line.
5 . The method of claim 4 , wherein operating the supply line includes operating an infusion line.
6 . The method of claim 4 , wherein operating the supply line includes operating a suction line.
7 . The method of claim 1 , wherein inserting a small diameter instrument into an incision in an eye includes inserting a 23 gauge or smaller instrument into the incision in the eye.
8 . The method of claim 1 , wherein inserting a small diameter instrument into an incision in an eye includes inserting a 25 gauge or smaller instrument into the incision in the eye.
9 . The method of claim 1 , wherein inserting a small diameter instrument into an incision in an eye includes inserting a 27 gauge or smaller instrument into the incision in the eye.
10 . A method, comprising:
inserting a small diameter instrument into an incision in an eye;
extending the small diameter instrument through a support frame and into the eye while the support frame remains outside the eye; and
sliding the support frame freely along a length of the small diameter instrument, wherein a distal portion of the support frame is pressed towards an outer surface of the eye by a biasing device; and
adjusting a biasing force preload amount of the biasing device.
11 . The method of claim 10 , wherein adjusting a biasing force preload amount of the biasing device includes adjusting a spring.
12 . The method of claim 11 , wherein adjusting the biasing force preload amount includes actuating an adjuster that does not protrude from a lateral gripping surface of a base unit.
13 . The method of claim 10 , further including rotating the eye by moving the small diameter instrument against a side of the incision and using the support frame to increase stiffness of the small diameter instrument.
14 . The method of claim 10 , wherein inserting a small diameter instrument into an incision in an eye includes inserting a 23 gauge or smaller instrument into the incision in the eye.
15 . The method of claim 10 , wherein inserting a small diameter instrument into an incision in an eye includes inserting a 25 gauge or smaller instrument into the incision in the eye.
16 . The method of claim 10 , wherein inserting a small diameter instrument into an incision in an eye includes inserting a 27 gauge or smaller instrument into the incision in the eye.