Medical instrument for containment and removal of calculi

Details Medical instrument for containment and removal of calculi Medical instrument for containment and removal of calculi

1984-04-11

1986-09-16

Thaler, Michael H.

Surgery

Truss

Pad

128345, A61B 1700

Patent

active

046115943

ABSTRACT:
Several versions of instruments are disclosed which are useful for the containment of calculi to minimize injury to surrounding tissue during removal and/or destruction of such calculi. In each embodiment a suitable grasping device is utilized to locate and grasp a stone (calculus) in a body passage or organ, such grasping device being used in combination with a catheter having an expandable and contractable distal end portion capable of receiving and substantially enclosing the stone to protect the surrounding tissue from injury that might otherwise be produced by the rough edges of the stone as it is extracted, or to shield such tissue as the stone is fragmented in situ and then contain the fragments as they are removed.

REFERENCES:
patent: 2918919 (1959-12-01), Wallace
patent: 2943626 (1960-07-01), Dormia
patent: 3074408 (1963-01-01), Chester
patent: 3334630 (1967-08-01), Kramer
patent: 3827437 (1974-08-01), Inaba
patent: 4046150 (1977-09-01), Schwartz
patent: 4243040 (1981-01-01), Beecher
patent: 4469100 (1984-09-01), Hardwick

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