Surgery – Instruments – Cutting – puncturing or piercing
Patent
1993-04-20
1994-08-30
Pellegrino, Stephen C.
Surgery
Instruments
Cutting, puncturing or piercing
604164, A61B 1732
Patent
active
053423828
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 slides within cutting tip. The rounded distal end enables the shield to spring forward to shield the cutting tip as soon as the tip perforates the tissue. In other embodiments, positive mechanical means effect shielding. Alternately, the obturator tip is retractable into the cannula or shield, by use of mechanical means such as a spring mechanism.
REFERENCES:
patent: 4168699 (1979-09-01), Hauser
patent: 4177814 (1979-12-01), Knepshield
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: 4931042 (1990-06-01), Holmes et al.
patent: 5104382 (1992-04-01), Brinkerhoff et al.
patent: 5116353 (1992-05-01), Green
Brinkerhoff Ronald J.
Madden Martin
Mills Earl J.
Parkhurst Harry C.
Coletti Paul A.
Ethicon Inc.
Lewis William W.
Pellegrino Stephen C.
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