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US 11,529,168 B2Granted
Cannula with illumination
AssigneeRebound Therapeutics Corporation
InventorsRoss Tsukashima, Donald Joseph Fuller, Jack H. Schmidt
Life of this patent
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Abstract
A cannula with a proximally mounted camera and proximally mounted light sources. The lighting sources have beam axes directed distally, toward a workspace at the distal end of the cannula. The light sources are coupled with focusing lenses, to reduce the beam angle of the lighting sources and reduce glare within the cannula tube.
Claims16
A cannula system for accessing a surgical field, said cannula system comprising:
- a cannula comprising a cannula tube (6) with a proximal end and a distal end and a lumen (9) extending from the proximal end to the distal end;
- and
- a lighting assembly (10) secured to the proximal end of the cannula tube;
- wherein the lumen and lighting assembly are configured to allow passage of surgical tools through the cannula while the lighting assembly is disposed on the proximal end of the cannula tube;
- said lighting assembly comprising a light source (12) and a focusing lens (16), said light source having a first beam axis and a first beam angle (α), said first beam axis aligned with an optical axis (11) of said focusing lens (16), said lighting assembly (10) having an output beam angle (β) and an output beam axis, wherein said output beam axis is directed toward the distal end of the cannula tube, wherein
- said output beam angle (β) is smaller than said first beam angle (α);
- whereby the lighting assembly provides adequate illumination for the surgical field with reduced glare within the cannula tube.
4 more elements
Dependencies are inferred from the claim text.