Device for acting by ultrasonic vibrations on an object

Details Device for acting by ultrasonic vibrations on an object Device for acting by ultrasonic vibrations on an object

1990-10-19

1992-11-03

Smith, Ruth S.

Surgery

Instruments

Means for concretion removal

128 24EL, A61B 1722

Patent

active

051603365

ABSTRACT:
The device comprises a shock wave generator (1, 2, 3) of the ballistic type comprising a projectile (1) provided to execute a to and fro movement within a guide tube, under the control of pneumatic means (13, 14, 5) disposed at one end of this guide tube. A waveguide (4, 19) exhibits an entrance interface (9) situated at the other end of the guide tube (2) and provided to be struck periodically by the projectile and thus to generate, by ballistic effect, ultrasonic shock waves. This waveguide per se is formed by a metal rod, one end of which forms the abovementioned entrance interface and can oscillate longitudinally within a guide (12), while its other end is provided to act by impact on the object (21) to be destroyed or to be processed.

REFERENCES:
patent: 3927675 (1975-12-01), Pohlman et al.
patent: 4030063 (1977-06-01), Wallen
patent: 4095667 (1978-06-01), Mahig et al.
patent: 4727875 (1988-03-01), Dory
patent: 4748971 (1988-06-01), Borodulin et al.

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