Ultrasonic handpiece
AssigneeSurgical Design Corporation
InventorIgor Strukel
Life of this patent
Estimating the term…
Abstract
An ultrasonic transducer of the magnetostrictive type in which the stack of laminations is divided into sections and at least one fluid supply tube extends at least part way along the length of the stack in the space between the two sections. One of the tube supplies irrigation fluid to the interior of the handpiece from which it exits through a sleeve succeeding the transducer tip. An elastic membrane sleeve surrounds the transducer vibrating structure to prevent interaction between the fluid and the transducer and consequent loss of power. The end of the work tip is hollow and the material is drawn therein to be emulsified by the ultrasonic energy radiated from the internal wall of the hollow end.
Claims27
An ultrasonic handpiece comprising:
- a housing having a winding therein for receiving electrical voltage
- a plurality of elongated magnetostrictive laminations electrically coupled with said winding to be excited thereby to convert electrical energy into vibrational energy, said plurality of laminations comprising two groups of laminations, the laminations of each group having a generally V-shape and being stacked, the ends of the V-shaped laminations of the two groups facing each other and leaving an open space between the two groups,
- a hollow tip coupled to said laminations to be vibrated thereby, and
- a first fluid supply tube within the open space between the two groups of laminations and extending along at least a portion of the length thereof.
An ultrasonic handpiece comprising:
- means for converting electrical energy into mechanical vibration,
- a work tip coupled to said converting means to receive the mechanical vibration,
- a transition body coupled between the end of the converting means and the tip for conveying the vibration energy to said tip,
- means for supplying fluid to said transition body,
- said transition body having a passage extending for a portion of its length for conveying the fluid to said tip,
- a sleeve of elastic material surrounding the outer surface of the end of the transition body adjacent said tip to prevent fluid from coming into contact with said outer surface of the transition body, and
- a shell spaced from and surrounding said transition body and said sleeve, the end of said sleeve adjacent said transition body having radially outwardly extending means engaging the inner surface of said shell.
An ultrasonic handpiece comprising:
- means for converting electrical energy into vibratory energy,
- a worktip coupled to said converting means to receive the vibratory energy,
- said worktip having a hollow end for receiving therein material to be emulsified, the interior wall of said hollow end having first and second sections of different diameters which are connected by a transition section defining at least one interior angle between the adjacent ends of the first and second sections, the vibratory energy being transmitted within said hollow end from the part of the interior wall including said at least one angle to act on the material therein.
Dependencies are inferred from the claim text.