Anvil assembly with snap backup ring
First Claim
Patent Images
1. An anvil assembly comprising:
- a center rod assembly; and
a head assembly pivotally supported on the center rod assembly between an operative position and a tilted position, the head assembly including;
a housing;
a post extending proximally from the housing and defining a proximal annular groove; and
a backup member operably supported about the post, wherein the backup member is movable from a first position in which a portion of the backup member is positioned to prevent pivotal movement of the head assembly from the operative position to the tilted position, to a second position in which the backup member is positioned to permit pivotal movement of the head assembly from the operative position to a tilted position, the backup member including a first locking feature and a second locking feature receivable within the proximal annular groove of the post to maintain the backup member in the first position.
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Accused Products
Abstract
An anvil assembly is provided. The anvil assembly includes center rod assembly, a head assembly pivotal relative to the center rod assembly between an operative position and a tilted position, and a mechanism for selectively maintaining the head assembly in the operative position.
513 Citations
12 Claims
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1. An anvil assembly comprising:
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a center rod assembly; and a head assembly pivotally supported on the center rod assembly between an operative position and a tilted position, the head assembly including; a housing; a post extending proximally from the housing and defining a proximal annular groove; and a backup member operably supported about the post, wherein the backup member is movable from a first position in which a portion of the backup member is positioned to prevent pivotal movement of the head assembly from the operative position to the tilted position, to a second position in which the backup member is positioned to permit pivotal movement of the head assembly from the operative position to a tilted position, the backup member including a first locking feature and a second locking feature receivable within the proximal annular groove of the post to maintain the backup member in the first position. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An anvil assembly comprising:
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a center rod assembly including a center rod having at least one tab; and a head assembly pivotally supported on the center rod assembly between an operative position and a tilted position, the head assembly including; a housing; a post extending proximally from the housing; and a backup member operably supported about the post, wherein the backup member is movable from a first position in which a portion of the backup member is positioned to prevent pivotal movement of the head assembly from the operative position to the tilted position, to a second position in which the backup member is positioned to permit pivotal movement of the head assembly from an operative position to the tilted position, the backup member including a first detent and a second detent configured to engage a proximal surface of the post to maintain the backup member in the first position, wherein the at least one tab engages the backup member when the backup member is in the first position to maintain the head assembly in the operative position. - View Dependent Claims (9, 10, 11, 12)
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Specification