Surgery – Means for introducing or removing material from body for... – With means for cutting – scarifying – or vibrating tissue
Patent
1995-10-26
1996-10-29
Mendez, Manuel
Surgery
Means for introducing or removing material from body for...
With means for cutting, scarifying, or vibrating tissue
606 1, A61B 1700
Patent
active
055691790
ABSTRACT:
A catheter 10 according to the invention includes an elongated shaft 14 defining a distal end 12 and a proximal end 13. The proximal end of the shaft includes a coupling arrangement 15 for coupling to a rotary drive such as an external rotary motor. The catheter also includes a rotary-to-axial motion converter 28 coupled to the distal end of the shaft 14. The rotary-to-axial-motion converter 28 includes at least a first magnetic pole pair 22N, 22S mechanically coupled to the distal end of the shaft 14 for being rotated thereby along an arc. The motion converter also includes a nonrotating reciprocating follower 30, and at least a second magnetic pole pair 30N, 30S which is located so as to come within the magnetic influence of the first magnetic pole pair 22N, 22S during each the rotation of the shaft 14. During each rotation, the two magnetic poles attract or repel, for causing reciprocating axial motion of the reciprocating follower 30. In use, the reciprocal axial motion generates acoustic energy in a vas to comminute or ablate matter.
REFERENCES:
patent: 5423797 (1995-01-01), Adrian
Medelex, Inc.
Meise William H.
Mendez Manuel
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