Directional laser probe
View Patent ↗A microsurgical laser probe is provided with a distal end portion of an optic fiber that projects from a tubular sleeve of the probe and can be caused to bend relative to the probe sleeve by manual manipulation of a mechanism on a handle of the probe.
1. An ophthalmic surgery instrument comprising:
an instrument handle;
a single rigid tubular sleeve projecting from the instrument handle, the sleeve having a continuous exterior surface and a continuous interior surface that both extend along the sleeve from the instrument handle to a distal, terminal end of the sleeve, the sleeve being dimensioned for insertion of the sleeve distal, terminal end into an interior of an eye; and,
an optic fiber extending through the handle and the sleeve, the optic fiber having a proximal end and an opposite distal end with a portion of the optic fiber at the optic fiber distal end having a bent configuration that is positioned in the sleeve and is held in a straight configuration by engagement with the sleeve interior surface, the optic fiber proximal end having a connector for connecting to a light source to transmit light through the optic fiber and project light from the optic fiber distal end, and the optic fiber distal end portion engaging in a sliding engagement with the sleeve interior surface and being extendable from the distal, terminal end of the sleeve to gradually bend from the straight configuration toward the bent configuration, the optic fiber distal end portion being dimensioned to bend to the bent configuration in an interior of an eye to project light from the optic fiber distal end in the interior of the eye and direct the light projected from the optic fiber distal end toward surgical sites lying in the interior of the eye.
2. The ophthalmic surgery instrument of claim 1 , further comprising:
the tubular sleeve being secured stationary to the handle.
3. The ophthalmic surgery instrument of claim 1 , further comprising:
the distal end portion of the optic fiber being constructed of a shape memory material.
4. The ophthalmic surgery instrument of claim 1 , further comprising:
the bent configuration of the optic fiber distal end portion being bendable to be straightened by sliding engagement of the optic fiber distal end portion with the sleeve interior surface when the optic fiber distal end portion is retracted into the sleeve interior surface.
5. The ophthalmic surgery instrument of claim 1 , further comprising:
the sleeve projecting straight from the handle.
6. The ophthalmic surgery instrument of claim 1 , further comprising:
the optic fiber being the only optic fiber that extends through the handle and the sleeve.
7. The ophthalmic surgery instrument of claim 1 , further comprising:
the instrument being a laser probe.
8. The ophthalmic surgery instrument of claim 1 , further comprising:
a mechanism on the handle and connected to the optic fiber to selectively move the optic fiber between a pushed forward position of the optic fiber where the optic fiber distal end portion is extended from the sleeve distal, terminal end, and a pulled back position of the optic fiber where the optic fiber distal end portion is retracted into the interior surface of the sleeve.
9. The ophthalmic surgery instrument of claim 1 , further comprising:
the optic fiber having an exposed distal end surface opposite the optic fiber proximal end.
10. The ophthalmic surgery instrument of claim 1 , further comprising:
the sleeve being constructed of surgical steel.
11. An ophthalmic surgery instrument comprising:
an elongate, narrow handle having opposite proximal and distal ends and a hollow bore extending through the handle;
an elongate, narrow rigid tubular sleeve having opposite proximal and distal ends with the sleeve proximal end being fixed stationary to the handle distal end, the sleeve having a continuous exterior surface and a continuous interior surface that extend between the sleeve proximal and distal ends with the sleeve interior surface defining an interior bore of the sleeve that communicates with the handle interior bore at the proximal end of the sleeve and ends at the sleeve distal end, the sleeve distal end being dimensioned for insertion of the sleeve distal end into an interior of an eye;
an optic fiber having a length that extends between opposite proximal and distal ends of the optic fiber, the optic fiber proximal end having a connector for connecting to a light source to transmit light through the optic fiber and project light from the optic fiber distal end, the optic fiber length extending through the handle interior bore and the sleeve interior bore for relative movement of the optic fiber relative to the handle and sleeve, and the optic fiber extending to an exposed distal end surface of the optic fiber with a distal end portion of the optic fiber length adjacent the optic fiber distal end surface having a bent configuration that engages in sliding engagement with the sleeve interior surface and is extendable from the sleeve distal end to cause the optic fiber distal end portion to gradually bend toward the bent configuration, the optic fiber distal end portion being dimensioned to bend to the bent configuration in an interior of an eye to project light from the optic fiber distal end in the interior of the eye and direct the light projected from the optic fiber distal end toward surgical sites lying in the interior of the eye.
12. The ophthalmic surgery instrument of claim 11 , further comprising:
the optic fiber distal end portion engaging against the interior surface of the sleeve to straighten the bent configuration of the optic fiber distal end portion.
13. The ophthalmic surgery instrument of claim 11 , further comprising:
the optic fiber being the only optic fiber that extends through the interior bore of the handle and the interior bore of the sleeve.
14. The ophthalmic surgery instrument of claim 11 , further comprising:
the sleeve being constructed of surgical steel.
15. The ophthalmic surgery instrument of claim 11 , wherein:
the instrument is an illuminating probe.
16. The ophthalmic surgery instrument of claim 11 , further comprising:
the distal end portion of the optic fiber being contained in a tubular tip constructed of a shape memory material.
17. The ophthalmic surgery instrument of claim 11 , further comprising:
the sleeve projecting along a straight line from the handle for the entire length of the sleeve.
18. The ophthalmic surgery instrument of claim 11 , further comprising:
the instrument being a laser probe.
19. The ophthalmic surgery instrument of claim 11 , further comprising:
the optic fiber having an exposed distal end surface opposite the optic fiber proximal end.
20. The ophthalmic surgery instrument of claim 11 , further comprising:
a mechanism on the handle and connected to the optic fiber to selectively move the optic fiber between a pushed forward position of the optic fiber where the optic fiber distal end portion is extended from the sleeve distal, terminal end, and a pulled back position of the optic fiber where the optic fiber distal end portion is retracted into the interior surface of the sleeve.
21. The ophthalmic surgery instrument of claim 11 , further comprising:
the sleeve having continuous exterior and interior surfaces that extend for an entire length of the sleeve projecting from the handle distal end.
22. An ophthalmic surgery instrument comprising:
an elongate, narrow handle having opposite proximal and distal ends and a hollow interior bore extending through the handle;
a single, elongate, narrow rigid tubular sleeve having a length with opposite proximal and distal ends, the sleeve proximal end being fixed stationary to the handle distal end, the sleeve having continuous exterior and interior surfaces that extend for the entire length of the sleeve, the sleeve interior surface defining an interior bore of the sleeve that communicates with the handle interior bore, the sleeve distal end being dimensioned for insertion of the sleeve distal end into an interior of an eye;
a single optic fiber having a length that extends between opposite proximal and distal ends of the optic fiber, the optic fiber proximal end having a connector for connecting to a separate light source to transmit light through the optic fiber and project light from the optic fiber distal end, the optic fiber distal end having an exposed end surface, the optic fiber length extending through the handle interior bore and through the sleeve interior bore for relative movement of the optic fiber relative to the handle and the sleeve, the optic fiber having a distal end portion adjacent the distal end surface of the optic fiber with the distal end portion having a bent configuration that engages in sliding engagement with the sleeve interior surface and is extendable from the sleeve distal end in response to movement of the optic fiber in the sleeve interior bore to cause the optic fiber distal end portion to gradually bend toward the bent configuration as the distal end portion is extended from the sleeve distal end, the optic fiber distal end portion being dimensioned to bend to the bent configuration in an interior of an eye to project light from the optic fiber distal end in the interior of the eye toward surgical sites lying in the interior of the eye.
23. The ophthalmic surgery instrument of claim 22 , further comprising:
the sleeve being constructed entirely of surgical steel.
24. The ophthalmic surgery instrument of claim 22 , further comprising:
the sleeve projecting along a straight line from the handle for the entire length of the sleeve.
25. The ophthalmic surgery instrument of claim 22 , further comprising:
the distal end portion of the optic fiber being constructed of a shape memory material.
26. The ophthalmic instrument of claim 22 , further comprising:
the optic fiber being the only optic fiber that extends through the handle and the sleeve.