Safety mechanism for trocar

Details Safety mechanism for trocar Safety mechanism for trocar

1990-08-30

1992-05-19

Thaler, Michael H.

Surgery

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

Treating material introduced into or removed from body...

606185, A61M 518

Patent

active

051144077

ABSTRACT:
A safety trocar is provided which includes a spring-loaded shield that shields the cutting tip of the obturator after the obturator penetrates tissue. The distal end of the shield is hemispheric in profile and contains a slot which conforms to the geometry of the cutting tip. Instead of using a discrete shield component the shielding function may be provided by spring-loading the trocar tube itself to spring forward and shield the obturator tip after the tip penetrates tissue. Alternately a safety mechanism insures the tip is covered by the shield after the tip penetrates tissue.

REFERENCES:
patent: 4535773 (1985-08-01), Yoon
patent: 4601710 (1986-07-01), Moll
patent: 4650030 (1987-03-01), Moll et al.
patent: 4902280 (1990-02-01), Lander
patent: 5030206 (1991-07-01), Lander

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