Capsule friendly tips for phacoemulsification and for irrigation / aspiration
View Patent ↗A surgical tool that includes a tip with a smooth, rounded edges and free of any sharp edges. The tip may have pores on its top, but none on the underside of its base. The distal end may have an open port with micro wires that form a Maltese cross shape. The distal end may be instead closed with protrusions spaced from each other by gaps or recesses.
1. A capsule friendly surgical tool, comprising a tip having proximal and distal ends with a hollow base extending between the proximal end of the tip and a suction port, the tip having a plurality of protrusions at the distal end of the tip each separated from each other by gaps or recesses of dimensions sufficient to wedge in and loosen cortex tissue in response to sufficient manual force being imparted to the tip, each of the protrusions having curved external surfaces entirely free of sharp edges, both the hollow base and the suction port being spaced from the distal end of the tip, the proximal end of the tip being configured to fit to a hollow shaft in an airtight manner sufficient for a suction force imparted into the hollow of the hollow shaft to suck divided cortical fibers of an epinucleus cortical material into the suction port to flow through the hollow of the hollow base to reach the hollow of the hollow shaft, the protrusions being configured to collectively and cooperatively engage with the epinucleus cortical material to, under manual pressure and guidance, divide the cortical fibers of the epinucleus cortical material, both the hollow shaft and the hollow base being constructed of materials sufficient to avoid their collapse upon being subjected to the suction force that is of a magnitude necessary for the divided cortical fibers to suck into the suction port to reach the hollow of the hollow shaft via the hollow of the hollow base.
2. The capsule friendly surgical tool of claim 1 , wherein the base extends between the proximal and distal ends of the tip uniformly about a centerline passing through a hollow of the base, the protrusions being configured in a manner symmetric with each other and concentric with the centerline.
3. The capsule friendly surgical tool of claim 1 , wherein each of the protrusions has rounded surfaces.
4. A method of operating a capsule friendly surgical tool, comprising
providing a tip having proximal and distal ends, the tip having a hollow base that is hollow and extends from the proximal end of the tip to a suction port, the tip having a plurality of protrusions at the distal end of the tip each separated from each other by gaps or recesses of sufficient dimension to wedge in and loosen cortex tissue in response to application of sufficient manual force imparted to the tip, each of the protrusions having curved external surfaces entirely free of sharp edges, both the hollow base and the suction port being spaced from the distal end of the tip, the proximal end of the tip being configured to fit to a hollow shaft that is hollow in an airtight manner sufficient for a suction force imparted into the hollow of the hollow shaft to suck divided cortical fibers of an epinucleus cortical material into the suction port to flow through the hollow of the hollow base to reach the hollow of the hollow shaft,
fitting the proximal end of the tip to the hollow shaft in the airtight manner; and
collectively and cooperatively engaging the protrusions, under manual pressure and guidance, with the epinucleus cortical material to divide cortical fibers of the epinucleus cortical material, both the hollow shaft and the hollow base being constructed of materials sufficient to avoid their collapse upon being subjected to the suction force that is of a magnitude necessary for the divided cortical fibers to suck into the suction port to reach the hollow of the hollow shaft via the hollow base.