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-11173327-B2
Publication Date
2021-11-16
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
The invention relates to a flue for use with an ultrasonic horn, where the flue has an internal surface with an arcuate region and a plurality of protrusions forming a bridge. The flue includes a first flue extender and a second flue extender extending between a proximal end and a distal end, and the second flue extender adjacent the distal end extends distally from the first flue extender adjacent the proximal end. The second flue extender has an internal diameter smaller than the internal diameter of the first flue extender, while the internal surface of each extender includes an arcuate region and protrusions forming a bridge.
The protrusions are arranged to form bridges that limit contact between the arcuate region of the internal surface and the external surface of the ultrasonic horn. The second flue extender comprises a higher density of protrusions than the first flue extender, including distributions at locations corresponding to locations on or about a node of the ultrasonic horn. The protrusions are distributed in staggered rows and columns such that one protrusion is centered relative to every four adjacent protrusions arranged in a substantially square or rectangular manner, including bridge formation in longitudinal and axial directions.
In the disclosed ultrasonic surgical apparatus, the ultrasonic horn also has first and second horn extenders with the second horn extender extending distally from the first horn extender and having an external diameter smaller than the external diameter of the first horn extender. The first and second flue extenders are configured to at least partially enclose the first and second horn extenders, respectively, and the protrusions forming the bridges limit contact between the flue internal arcuate regions and the horn external surfaces. The document further specifies protrusion geometry and density relationships, including spherical protrusions with defined spherical radius ranges between the first and second flue extenders.
Claims Coverage
The independent claims cover flues and an ultrasonic surgical apparatus with first and second extenders having different diameter relationships and protrusion-density/bridge formations. The main inventive concepts include bridge-forming protrusions on arcuate regions, comparative diameter relationships between first and second extenders, and structured protrusion distributions with node-corresponding locations, staggered rows and columns, and spherical radius ranges.
Bridge-forming protrusions on arcuate regions of first and second flue extenders
A flue for use with an ultrasonic horn comprising an internal surface with an arcuate region and a plurality of protrusions forming a bridge; the internal surface of the first flue extender comprises an arcuate region and a plurality of protrusions forming a bridge, and the internal surface of the second flue extender comprises an arcuate region and a plurality of protrusions forming a bridge.
Different internal diameters and higher protrusion density in the second flue extender
The second flue extender has an internal diameter smaller than an internal diameter of the first flue extender, and the second flue extender has a higher density of the plurality of protrusions than the first flue extender.
Node-corresponding protrusion locations and bridge limiting contact at the arcuate interface
A flue for use with an ultrasonic horn comprising an internal surface including an arcuate region and a plurality of protrusions distributed at locations that correspond to locations on or about a node of the ultrasonic horn, where the plurality of protrusions form one or more bridges.
Staggered rows and columns with centering relative to every four adjacent protrusions
The plurality of protrusions are distributed in staggered rows and columns such that one protrusion is centered in relation to every four adjacent protrusions arranged in a substantially square or rectangular manner.
Ultrasonic surgical apparatus with first and second horn extenders and enclosed flue extenders
An ultrasonic surgical apparatus comprising an ultrasonic horn having an external surface comprising a first horn extender and a second horn extender with the second horn extender extending distally from the first horn extender and having an external diameter smaller than an external diameter of the first horn extender, and a flue having first and second flue extenders extending between a proximal end and a distal end and configured to at least partially enclose the first and second horn extenders, wherein bridges on the flue protrusions limit contact between arcuate regions and horn external surfaces.
Flue internal diameter defined by arcuate region and inwardly projecting protrusions
A flue for use with an ultrasonic horn comprising an internal surface extending between a proximal end and an opposing distal end, and a first flue extender and a second flue extender, where the internal surface of each one of the first flue extender and the second flue extender includes an arcuate region defining a first inner diameter and a plurality of protrusions projecting inwardly from the arcuate region defining a second inner diameter, and the second inner diameter is smaller than the first inner diameter.
Stated spherical radius ranges for protrusions on first versus second flue extenders
The plurality of protrusions on the first flue extender have a spherical radius in the range of 0.01 inches to 0.10 inches and the plurality of protrusions on the second flue extender have a spherical radius in the range of 0.01 inches to 0.08 inches.
Across the independent claims, coverage centers on a flue and an ultrasonic surgical apparatus that use first and second extenders with different diameter relationships and different protrusion densities. In each case, an arcuate region is provided with bridge-forming protrusions that limit contact with the ultrasonic horn’s external surface, with further specification of protrusion placement relative to horn node locations and a staggered rows-and-columns pattern. The independent claims also specify spherical protrusion geometry via stated spherical radius ranges for the first versus second flue extenders.
Stated Advantages
Enhancing cooling and reducing thermal rise and burn risk by limiting contact between the flue and stepped ultrasonic horn extenders.
Documented Applications
Use of the disclosed flue and ultrasonic surgical apparatus with an ultrasonic horn in ultrasonic surgical apparatus contexts.
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