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US 5,104,025 AGranted
Intraluminal anastomotic surgical stapler with detached anvil
AssigneeEthicon, Inc.
InventorsLauren O. Main, Federico Bilotti
Life of this patent
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Abstract
A surgical stapling mechanism with an integral trocar is disclosed. This trocar contains an alignment mechanism which causes the anvils on the stapler to align with the staples held within the head portion. A unique latching mechanism is disclosed, and a sleeve which covers the sharp trocar tip is provided.
Claims40
A surgical stapling device comprising:
- a plurality of staples, said staples initially contained in a head portion;
- an anvil portion into which said staples may be ejected from said head portion, said anvil portion detachable from said head portion;
- said head portion containing a shaft with a longitudinal axis and having an integral trocar with a sharpened generally conical tip, said sharpened tip having aligning means displayed radially about said tip extending and parallel to said shaft longitudinal axis for aligning said tip with said anvil portion;
- and
- wherein said anvil portion further contains an anvil head having a plurality of staple clinching anvils and attached to an elongated sleeve with a hollow interior and said anvil head further containing a plurality of ribs placed radially within said sleeve hollow exterior, said ribs aligning with said trocar tip aligning means.
2 more elements
A surgical stapling device comprising:
- a plurality of staples, said staples initially contained in a head portion;
- an anvil portion into which said stapled may be ejected from said head portion, said anvil portion detachable from said head portion;
- and
- said head portion containing a shaft having a longitudinal axis and with an integral trocar having a sharpened generally conical tip, and aid trocar tip containing a plurality of grooves parallel with said shaft longitudinal axis.
1 more element
A surgical stapling device comprising:
- a plurality of staples, said staples initially contained in a head portion;
- an anvil portion into which said staples may be ejected from said head portion, said anvil portion detachable from said head portion;
- said head portion containing a shaft with a trocar having a sharpened tip upon which may be attached said anvil portion, and said head portion further containing a first elongated sleeve, said first elongated sleeve attached to said trocar by spring means;
- and
- wherein said trocar tip may be exposed upon the exertion of force on said sleeve, and wherein said anvil portion is attachable to said exposed trocar tip.
2 more elements
A surgical stapling device comprising:
- a plurality of staples, said staples initially contained in a head portion;
- an anvil portion into which said staples may be ejected from said head portion, said anvil portion detachable from said head portion;
- said head portion further containing a shaft having a longitudinal axis, and an integral trocar having a sharpened tip, and further containing retracting means, said trocar tip retractable into a retracted position on said shaft along said longitudinal axis by operation of said retracting means;
- and
- wherein said anvil portion contains a latching mechanism engageable with said trocar tip and operable to keep said anvil releasably engaged to said head portion, and further wherein said anvil portion is not releasable from said head portion when said anvil portion is attached to said head portion with said trocar tip in its retracted position.
2 more elements
Dependencies are inferred from the claim text.