Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1993-05-24
1995-03-21
Rosenbaum, C. Fred
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604171, 604264, 604274, 606185, 128754, A61M 5178
Patent
active
053991672
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. The rounded distal end enables the shield to spring forward to shield the cutting tip as soon as the tip perforates the tissue. A valve is located at the proximal end of the trocar tube to seal the end of the tube. The valve is oriented at an acute angle with respect to the longitudinal axis of the trocar tube. The valve is controllable by an external lever which will hold the valve open or permit it to spring shut. An incremental advancement mechanism cooperates with the obturator to permit only incremental advance of the obturator. 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.
REFERENCES:
patent: 201443 (1878-03-01), Parker
patent: 2221739 (1940-11-01), Reiter
patent: 2295849 (1942-09-01), Kayden
patent: 4411653 (1983-10-01), Razi
patent: 4535773 (1985-08-01), Yoon
patent: 4601710 (1986-07-01), Moll
patent: 4650030 (1987-03-01), Moll et al.
patent: 4654030 (1987-03-01), Moll et al.
patent: 4668220 (1987-05-01), Hawrylenko
patent: 4710178 (1987-12-01), Leonard et al.
patent: 4902280 (1990-02-01), Lander
patent: 4931042 (1990-06-01), Holmes et al.
patent: 5030206 (1991-07-01), Lander
Coletti Paul A.
Ethicon Inc.
Rosenbaum C. Fred
Stright Jr. Ronald K.
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