Afterloader with active force feedback

Details Afterloader with active force feedback Afterloader with active force feedback

1995-05-08

1998-12-22

Lacyk, John P.

Surgery

Radioactive substance applied to body for therapy

Radioactive substance placed within body

600 3, A61N 500

Patent

active

058511725

ABSTRACT:
An afterloader for use in radiation oncology or intravascular radiotherapy comprises a wire storage mechanism for storing a radioactive-tipped sourcewire, a drive mechanism for advancing the sourcewire into a catheter or other channel implanted in a patient. A computer control system receives information from an encoder and a force sensor, which monitor the displacement of and the force exerted on the sourcewire, respectively. The displacement and force information are used to advance the wire at the fastest possible speed to the treatment site without exceeding a pre-programmed force profile designed to ensure the sourcewire does not puncture the catheter. The force profile is dynamic depending on the particular catheter being used, and catheter information may be inputted into the computer controller using a bar code or other information storage means in the catheter itself.

REFERENCES:
patent: 4851694 (1989-07-01), Rague et al.
patent: 5030194 (1991-07-01), Van't Hooft
patent: 5084001 (1992-01-01), Van't Hooft et al.
patent: 5092834 (1992-03-01), Bradshaw et al.

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