Surgical stapling instrument having separate distinct closing and firing systems
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United States of America Patent
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-
Feb 21, 2006
Grant Date -
Nov 25, 2004
app pub date -
May 20, 2003
filing date -
May 20, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A surgical severing and stapling instrument clamps tissue within an end effector of an elongate channel pivotally opposed by an anvil. An E-beam firing bar affirmatively maintains a desired spacing while severing and stapling tissue by longitudinally engaging the anvil and elongate channel. Separate closing action and firing (i.e., severing and stapling) action of the end effector allows a clinician to selectively position and clamp tissue. The end effector enables this advantageous separate firing while affirmatively spacing the end effector by having an upper pin of the firing bar reside within an anvil pocket before firing. When the anvil is closed and clamped, the upper pin of the E-beam firing bar may move longitudinally and distally from the anvil pocket to an anvil slot thereby engaging the anvil.
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