Flue for ultrasonic aspiration surgical horn
Inventors
Cotter, Daniel J. • Gupta, Saurav V. • Kosenko, Igor V. • Bertorelli, John • Manandhar, Prakash
Assignees
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Publication Number
US-12138489-B2
Publication Date
2024-11-12
Expiration Date
Abstract
A flue for use with an ultrasonic surgical tip, comprising protrusions or bumps on its inner surface with improved protrusion pattern, density and location. The flue has enhanced cooling effect for the ultrasonic surgical tip.
Core Innovation
A flue for an ultrasonic surgical apparatus includes an internal surface extending between a first end and a second end, with a first flue extender portion and a second flue extender portion extending between the first end and the second end. The internal surface of each extender portion includes a region defining a first inner diameter and a plurality of protrusions projecting inwardly defining a second inner diameter, and the plurality of protrusions form a bridge that limits contact with the region of the internal surface.
The second inner diameter is smaller than the first inner diameter, and the second flue extender portion has a higher density of the plurality of protrusions than the first flue extender portion. An ultrasonic surgical apparatus includes an ultrasonic horn and a flue disposed about the external surface of the ultrasonic horn, wherein the protrusions form a bridge that limits contact between the flue and the ultrasonic horn.
Claims Coverage
The independent claims are directed to 4 inventive features: bridge protrusions that limit contact, differential protrusion density between extender portions, a flue disposed about an ultrasonic horn, and arcuate regions with a smaller second inner diameter.
Bridge limiting contact on internal surface
An internal surface including a first region and a plurality of protrusions, wherein the plurality of protrusions form a bridge that limits contact with the first region of the internal surface.
Differential protrusion density between extender portions
A first flue extender portion and a second flue extender portion extending from the first flue extender portion, wherein the second flue extender portion has a higher density of the plurality of protrusions than the first flue extender portion.
Flue disposed about ultrasonic horn with contact-limiting bridge
An ultrasonic horn having an external surface and a flue disposed about the external surface of the ultrasonic horn, wherein the internal surface includes a region defining a first inner diameter and a plurality of protrusions projecting inwardly from the region defining a second inner diameter, and wherein the plurality of protrusions form a bridge that limits contact between the region of the internal surface of the flue and the external surface of the ultrasonic horn.
Arcuate region with smaller second inner diameter and higher protrusion density
A flue for an ultrasonic surgical apparatus comprising an internal surface extending between a first end and a second end, first and second flue extender portions extending between the first end and the second end, arcuate regions defining a first inner diameter and a plurality of protrusions projecting inwardly defining a second inner diameter smaller than the first inner diameter, and the second flue extender portion having a higher density of the plurality of protrusions than the first flue extender portion.
Overall, the claims center on a flue with inwardly projecting protrusions that form a bridge limiting contact, together with a second flue extender portion having a higher protrusion density than a first flue extender portion; in the apparatus claim, the flue is disposed about an ultrasonic horn.
Stated Advantages
Reduces thermal rise/burn risk by limiting horn contact under compression.
Limits horn contact under compression by forming sustained longitudinal and axial bridges.
Reduces maximum temperatures under nominal-to-high and excessive loads.
Documented Applications
Used as an irrigation flue/sleeve for ultrasonic aspiration surgical horns in an ultrasonic surgical apparatus configured to dispose a flue about an ultrasonic horn.
Supports analysis/test comparisons using cadaver lab thermal data and point-load and worst-case tests comparing a commercial EMT+ flue vs a prototype.
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