Expandable cannula having longitudinal wire and method of use

Details Expandable cannula having longitudinal wire and method of use Expandable cannula having longitudinal wire and method of use

1993-02-04

1994-06-14

Kruter, Jerome L.

Surgery

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

Treating material introduced into or removed from body...

604280, A61M 2500, A61M 500

Patent

active

053206118

ABSTRACT:
Cannulas for surgical and medical use expand along their entire lengths. The cannulas are inserted through tissue when in an unexpanded condition and with a small diameter. The cannulas are then expanded radially outwardly to give a full-size instrument passage. Expansion of the cannulas occurs against the viscoelastic resistance of the surrounding tissue. The expandable cannulas do not require a full depth incision, or at most require only a needle-size entrance opening.

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