Illuminated suction apparatus
An illuminated suction apparatus including a hand-held surgical device combining a high-performance non-fiber optic optical waveguide with suction. This device is useful in a wide array of surgical procedures including open and minimally invasive orthopedics.
1. A hand held illuminated suction device, said device comprising:
a suction tube having an inner surface, and outer surface, a proximal portion and a distal portion, wherein the proximal portion is configured to be fluidly coupled to a vacuum source, and wherein the distal portion is configured to remove fluid or debris from a surgical field;
a non-fiber optic optical waveguide having a proximal region and distal region, wherein the optical waveguide is disposed over the outer surface of the suction tube, and
wherein light is transmitted from the proximal region of the optical waveguide toward the distal region thereof by total internal reflection, and
wherein the light is emitted from the distal region of the optical waveguide and directed distally to illuminate the surgical field; and
one or more standoffs coupled to either the suction tube or the optical waveguide, wherein the standoffs prevent engagement between a portion of the suction tube with a portion of the optical waveguide thereby maintaining an air gap therebetween, the air gap facilitating total internal reflection of the light through the optical waveguide.
2. The device of claim 1 , wherein the suction tube is electrically conductive and wherein the suction tube acts as an electrode for delivering electric current to tissue in the surgical field.
3. The device of claim 1 , further comprising one or more electrodes disposed on the suction tube or the optical waveguide, the one or more electrodes configured to deliver electric current to tissue in the surgical field.
4. The device of claim 1 , wherein the distal region of the optical waveguide comprises a plurality of microstructures for extracting light therefrom and adapted to direct the extracted light to form a pre-selected illumination pattern.
5. The device of claim 4 , wherein the plurality of microstructures extract the light from the optical waveguide and direct the light laterally away therefrom.
6. The device of claim 4 , wherein the microstructures comprise facets, lenses or a lens array.
7. The device of claim 6 , wherein the light extracted from each forms an illumination pattern, and wherein the lenses are arranged to have a pitch so that the illumination patterns overlap with one another.
8. The device of claim 1 , wherein the light emanates from a region of the optical waveguide that is proximal of the distal portion of the suction tube.
9. The device of claim 1 , wherein the optical waveguide has a cross-section, and wherein the cross-section changes from the proximal region to the distal region thereof.
10. The device of claim 9 , wherein the optical waveguide has a width and a thickeness, and wherein the width increases from the proximal region to the distal region thereof.
11. The device of claim 1 , wherein the optical waveguide has a concave surface forming a saddle for receiving the suction tube.
12. The device of claim 1 , wherein the optical waveguide comprises a single piece light input portion that is fixedly coupled with the optical waveguide and integral therewith.
13. The device of claim 1 , wherein the one or more standoffs are disposed in optical dead zones of the optical waveguide where there is little or no light transmitted by total internal reflection.
14. The device of claim 1 , further comprising a handle coupled to the proximal portion of the suction tube and the proximal region of the optical waveguide.
15. The device of claim 14 , wherein an air gap is disposed between an inner surface of the handle and the outer surface of the optical waveguide, the air gap facilitating total internal reflection of the light through the optical waveguide.
16. The device of claim 15 , further comprising one or more standoffs disposed on the inner surface of the handle or on the outer surface of the optical waveguide, the one or more standoffs preventing engagement between a portion of the handle with a portion of the optical waveguide thereby maintaining the air gap therebetween.
17. The device of claim 1 , further comprising a suction control mechanism disposed near the proximal portion of the suction tube, the suction control mechanism adapted to control suction strength provided by the suction tube.
18. A hand held illuminated suction device, said device comprising:
a suction tube having an inner surface, and outer surface, a proximal portion and a distal portion, wherein the proximal portion is configured to be fluidly coupled to a vacuum source, and wherein the distal portion is configured to remove fluid or debris from a surgical field;
a non-fiber optic optical waveguide having a proximal region and distal region, wherein the optical waveguide is disposed over the outer surface of the suction tube, and
wherein light is transmitted from the proximal region of the optical waveguide toward the distal region thereof by total internal reflection, and
wherein the light is emitted from the distal region of the optical waveguide and directed distally to illuminate the surgical field; and
optical cladding disposed at least partially around the optical waveguide, wherein the optical cladding comprises a molded polymer element, and wherein the optical cladding facilitates total internal reflection of the light through the optical waveguide, and
wherein the optical cladding is disposed between the suction tube and the optical waveguide.
19. The device of claim 18 , wherein the suction tube is electrically conductive and wherein the suction tube acts as an electrode for delivering electric current to tissue in the surgical field.
20. The device of claim 18 , further comprising one or more electrodes disposed on the suction tube or the optical waveguide, the one or more electrodes configured to deliver electric current to tissue in the surgical field.
21. The device of claim 18 , wherein the distal region of the optical waveguide comprises a plurality of microstructures for extracting light therefrom and adapted to direct the extracted light to form a pre-selected illumination pattern.
22. The device of claim 21 , wherein the plurality of microstructures extract the light from the optical waveguide and direct the light laterally away therefrom.
23. The device of claim 21 , wherein the microstructures comprise facets, lenses or a lens array.
24. The device of claim 23 , wherein the lenses are arranged to have a pitch, and wherein the pitch is adjusted so that illumination patterns emitted from the lenses overlap with one another.
25. The device of claim 18 , wherein the light emanates from a region of the optical waveguide that is proximal to the distal portion of the suction tube.
26. The device of claim 18 , wherein the optical waveguide has a cross-section, and wherein the cross-section changes from the proximal region to the distal region thereof.
27. The device of claim 26 , wherein the optical waveguide has a width and a thickness, and wherein the width increases from the proximal region to the distal region thereof.
28. The device of claim 18 , wherein the optical waveguide has a concave surface forming a saddle for receiving the suction tube.
29. The device of claim 18 , wherein the optical waveguide comprises a single piece light input portion that is fixedly coupled with the optical waveguide and integral therewith.
30. The device of claim 18 , further comprising a handle coupled o the proximal portion of the suction tube and the proximal region of the optical waveguide.
31. The device of claim 30 , wherein an air gap is disposed between an inner surface of the handle and the outer surface of the optical waveguide, the air gap facilitating total internal reflection of the light through the optical waveguide.
32. The device of claim 31 , further comprising one or more standoffs disposed on the inner surface of the handle or on the outer surface of the optical waveguide, the one or more standoffs preventing engagement between a portion of the handle with a portion of the optical waveguide thereby maintaining the air gap therebetween.
33. The device of claim 18 , further comprising a suction control mechanism disposed near the proximal portion of the suction tube, the suction control mechanism adapted to control suction strength provided by the suction tube.
34. A method of illuminating tissue in a surgical field of a patient, said method comprising:
providing an illuminated suction apparatus having a suction tube and a non-fiber optic optical waveguide, wherein the suction tube and optical waveguide are coupled together to form a single handheld instrument;
maintaining an air gap between the suction tube and the optical waveguide or providing optical cladding therebetween, the air gap or the optical cladding facilitating total internal reflection of light being transmitted through the optical waveguide;
positioning a distal portion of the illuminated suction apparatus in he surgical field;
illuminating the surgical field by extracting light from the optical waveguide with light extraction features disposed on a distal region or an outer surface of the optical waveguide, the extracted light directed by the extraction features to form a pre-selected illumination pattern in the surgical field; and
while illuminating the surgical field, suctioning fluid or other debris from the surgical field with the suction tube.
35. The method of claim 34 , wherein optical cladding comprises a molded polymer element disposed around the optical waveguide and disposed between the suction tube and optical waveguide.
36. The method of claim 34 , wherein illuminating the surgical field comprises positioning the distal region of the optical waveguide in the surgical field without engaging tissue therein.
37. The method of claim 34 , wherein the distal region of the optical waveguide comprises an array of lenses integrally formed therein, and illuminating the surgical field comprises projecting a spot of light from each lens in the array, and wherein at least a first spot of light overlaps with a second spot of light in the surgical field.
38. The method of claim 34 , wherein illuminating the surgical field comprises extracting light from the optical waveguide with one or more light extracting structures disposed on the outer surface thereof, wherein the extracted light is directed laterally and distally away from the optical waveguide.
39. The method of claim 34 , further comprising controlling suction strength provided by the suction tube with a suction control mechanism.
40. The method of claim 34 , further comprising stimulating the tissue with electrical current delivered by the suction tube or from one or more electrodes coupled to the suction tube.