Surgery – Truss – Pad
Patent
1985-09-25
1988-01-05
Cline, William R.
Surgery
Truss
Pad
12820026, 1283053, 604106, 604160, 604272, A61M 2900
Patent
active
047169010
ABSTRACT:
The invention relates to a surgical appliance for forming an opening through the skin of a patient and for distending the opening so formed. The appliance takes the form of a trocar which may comprise two separate components or two component portions formed by openings in a tube extending partially along the tube from the distal end. In either case, the components or component portions are preloaded towards a closed condition, but can be expanded into an open condition, for example by forcing a tubular expander into the trocar from the proximal end. The preloading of the trocar may be by a resilient sleeve surrounding the components or by a "set" introduced into the material forming the components. A cutting edge may be formed across substantially the full width of the distal end of the trocar and it is preferred that in the open condition, there is a no significant increase in the cross-section of the trocar towards the distal end.
REFERENCES:
patent: 3662754 (1972-05-01), Halloran
patent: 3688773 (1972-09-01), Weiss
patent: 3788318 (1974-01-01), Kim et al.
patent: 3789852 (1974-02-01), Kim et al.
patent: 3877429 (1975-04-01), Rasumoff
Gill Steven S.
Jackson Joseph F.
Cline William R.
Jenkins Richard E.
Neils Peggy A.
Pratt Burnerd International Limited
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