Improved ultrasonic surgical tool
AssigneeSra Developments Limited
InventorsMichael John Radley Young, Stephen Michael Radley Young
Life of this patent
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Abstract
The shaped output is for use with an ultrasonic surgical tool vibratable in torsional mode. The output has a generally cylindrical first waveguide (1) with, at a distal end a second waveguide extension member (3) of reduced diameter. The second waveguide (3) is curved in one plane from the axis of the first waveguide. It has at least two blade faces (4) extending radially outwardly from its distal end.
Claims22
1-7. (canceled)
An output means for use with an ultrasonic surgical tool vibratable in torsional mode, said output means comprising a generally cylindrical first waveguide provided at a distal end with a second waveguide extension member of reduced diameter, and being curved in one plane from the axis of the first waveguide, and at least two blade means extending radially from a distal end of the second waveguide extension member.
An output means for use with an ultrasonic surgical tool vibratable in torsional mode, said output means comprising a first portion having a constant cross sectional area, provided at a distal end thereof with a second portion having a cross sectional area smaller than that of the first portion, said second portion comprising blade means at or towards its distal end and extending from opposite sides thereof, wherein said second portion is curved towards its distal end such that said blade means is located within a projection of the cross sectional area of the first portion.
An output means for use with an ultrasonic surgical tool vibratable in torsional mode, said output means comprising a first portion having a constant cross sectional area provided at a distal end thereof with a second portion having a cross sectional area smaller than that of the first portion, said second portion comprising blade means at or towards its distal end and extending therefrom, wherein said blade means comprises a plurality of substantially identical part cylindrical surfaces.
An output means for use with an ultrasonic surgical tool vibratable in torsional mode, said output means comprising a first portion having a constant cross sectional area provided at a distal end thereof with a second portion having a cross sectional area smaller than that of the first portion, said second portion comprising blade means at or towards its distal end, wherein the blade means extend in different directions and wherein said second portion is curved towards its distal end such that said blade means is located within a projection of the cross sectional area of the first portion.
A method of making output means for use with an ultrasonic surgical tool vibratable in torsional mode, the method comprising:
- providing a member having a first portion with a constant cross sectional area provided at a distal end thereof with a second portion having a cross sectional area smaller than that of the first portion;
- and
- forming blade means by machining cylindrical channels into said second portion using a spherically headed machining tool.
Dependencies are inferred from the claim text.