Introduction set with flexible trocar with curved cannula

Details Introduction set with flexible trocar with curved cannula Introduction set with flexible trocar with curved cannula

1987-08-26

1989-09-05

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604170, 128305, A61M 518

Patent

active

048634301

ABSTRACT:
An introduction set 20 is adapted for positioning a probe 22 relative to a desired site in a subject 128. The introduction set 20 includes an elongated flexible trocar 24 adapted for insertion into the subject 128 relative to the desired site. The trocar 24 has a flexible body 34 adapted to be bent out of the way of the equipment. The introduction set 20 further includes a curved cannula 26 having an elongated arcuate tubular body 60 and an elongate friction reducing tubular lining 64 disposed within the tubular body 60. The introduction set 20 further includes a dilator 28 which can be disposed in the cannula 26 for facilitating the introduction of the cannula 26 into the subject 128. The cannula 26 and dilator 28 are inserted over the trocar 24. The trocar 24 is of sufficient length such that, with the cannula 26 completely thread over the trocar 24, the trocar 24 extends from the back end 44 of the cannula 26 so that the position of the trocar 24 can be continuously monitored and maintained. The introduction set 20 further includes a seal nut 30 which can be lockingly secured to the cannula 26 with the trocar 24 and dilator 28 removed. The seal nut 30 provides a seal between the probe 22 and the cannula 26.

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