Surgical instrument with extendable blades
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United States of America Patent
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-
Feb 21, 1995
Issued Date -
N/A
app pub date -
Jul 28, 1993
filing date -
Jul 31, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tissue retraction device for use in laparoscopic surgery which includes a plurality of thin, resiliently deformable, pre-stressed blades disposed in a stacked relationship within an outer sleeve. The blades are connected at their inboard ends to a support rod which is telescopically carried within the sleeve. The blades are pre-twisted about a strategically located pivot point so that once the inboard end of the device is positioned within the peritoneum, the rod can be urged forwardly causing the end portions of the blades to automatically fan out in a manner such that the full width of the blades can be pressed against the tissue.
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