Method and apparatus for replacing a cannula

Details Method and apparatus for replacing a cannula Method and apparatus for replacing a cannula

1993-05-26

1995-08-01

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604174, 604164, 604158, A61M 500, A61M 2500

Patent

active

054376440

ABSTRACT:
A method and an apparatus are disclosed for removal of an existing cannula from a patient and insertion of a replacement cannula into the patient, through the same passageway, by use of a guide rod which maintains the passageway intact. The guide rod is first installed through the existing cannula, and the existing cannula is removed. A hollow trocar, carrying a replacement cannula, is inserted into the patient over the guide rod, then the guide rod and the trocar are removed, leaving the replacement cannula in place in the patient. The guide rod can be fitted with an expandable anchor to hold the guide rod in place during removal of the existing cannula and insertion of the trocar.

REFERENCES:
patent: 4498902 (1985-02-01), Ash
patent: 4581019 (1986-04-01), Curelaru
patent: 4932413 (1990-06-01), Shockey
patent: 4969875 (1990-11-01), Ichikawa
patent: 4994027 (1991-02-01), Farrell
patent: 5106376 (1992-04-01), Monnen
patent: 5232442 (1993-08-01), Johnson
patent: 5275611 (1994-01-01), Behl
patent: 5281204 (1994-01-01), Horie

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