Dilation catheter and method

Details Dilation catheter and method Dilation catheter and method

1986-02-03

1989-05-30

Cohen, Lee S.

Surgery

Truss

Pad

128398, A61N 506

Patent

active

048340936

ABSTRACT:
An apparatus and method for opening an osbstucted tubular passageway in the human body. A first catheter having a distal end dimensioned to pass freely along a tubular passageway is guided to the obstruction. A proximal end of the first catheter is adapted to extend outside the human body and is coupled to a source of coherent radiation. Coherent radiation is transmitted from the source to the distal end of the first catheter to permit the coherent radiation to be directed against the obstruction to bore a passageway through the obstruction. After a passageway has been bored through the obstruction, the first catheter is removed from the tubular passageway. A second catheter having a distal end dimensioned to pass freely along the tubular passageway, a proximal end adapted to extend outside the human body, and a peripheral elastic expandable zone spaced from the distal end is guided into the passageway through the obstruction. The expandable zone of the second catheter is expanded to increase the passageway through the obstruction. The second catheter is then removed from the tubular passageway.

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patent: 3590232 (1971-06-01), Sadowski
patent: 3961621 (1976-06-01), Northered
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patent: 4420407 (1984-09-01), Hussein
patent: 4445892 (1984-05-01), Hussein et al.
patent: 4512762 (1985-04-01), Spears
patent: 4564024 (1987-03-01), Crittenden et al.
patent: 4631052 (1986-12-01), Kensey
patent: 4681104 (1987-07-01), Edelman

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