US 10,383,630 B2Granted

Surgical stapling device with rotary driven firing member

AssigneeEthicon, Inc.

InventorsFrederick E. Shelton, IV, Jeffrey S. Swayze, Chester O. Baxter, III

Life of this patent

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Abstract

A rotary drive arrangement for a surgical instrument that includes a surgical end effector. In one form, the rotary drive arrangement includes a drive shaft assembly that is selectively axially movable between a first position and a second position. A rotary transmission operably interfaces with the drive shaft assembly such that when the drive shaft assembly is in the first axial position, application of one of the rotary drive motions to the drive shaft assembly causes the rotary transmission to apply a first rotary control motion to the surgical end effector and when the drive shaft assembly is in the second axial position, application of the rotary drive motion to the drive shaft assembly causes the rotary transmission to apply a second rotary control motion to the surgical end effector.

Claims16

Dependent claims

A surgical stapling assembly, comprising:

a shaft assembly;
an articulation joint;
an end effector coupled to said shaft assembly by said articulation joint for selective articulation relative thereto, said end effector comprising:
an anvil;
a staple cartridge comprising a plurality of staples, wherein said staples are movable between unfired positions and fired positions during a staple firing stroke;
a first jaw;
and
a second jaw moveable relative to said first jaw;
and
a firing system, comprising:
a rotary drive system configured to generate rotary drive motions;
an end effector drive screw configured to receive said rotary drive motions from said rotary drive system;
and
a firing member operably coupled with said end effector drive screw, wherein, upon receiving rotary drive motions from said end effector drive screw, said firing member is actuated to perform said staple firing stroke, wherein said firing member comprises:
a body portion;
a cutting member;
a first camming portion engageable with said first jaw;
and
a second camming portion engageable with said second jaw,
wherein said body portion of said firing member comprises an internal threaded section threadably engaged with said end effector drive screw, and
wherein said internal threaded section comprises a plurality of rods forming threads of said internal threaded section.

18 more elements

A surgical stapling assembly, comprising:

a shaft assembly;
an articulation joint defining an articulation axis;
an end effector coupled to said shaft assembly by said articulation joint, wherein said end effector is configured to be articulated about said articulation axis relative to said shaft assembly, said end effector comprising:
an anvil;
a staple cartridge comprising a plurality of staples, wherein said staples are configured to be ejected from said staple cartridge during a staple firing stroke;
a first jaw;
and
a second jaw moveable relative to said first jaw;
and
a firing system, comprising:
a rotary drive system configured to generate rotary drive motions;
a rotary drive shaft configured to receive said rotary drive motions from said rotary drive system;
and
a firing member threadably coupled with said rotary drive shaft distal of said articulation joint, wherein, upon receiving rotary drive motions from said rotary drive shaft, said firing member is actuated to perform said staple firing stroke, wherein said firing member comprises:
a body portion;
a cutting member;
a first camming portion extending laterally from said body portion, wherein said first camming portion is engageable with said first jaw;
and
a second camming portion extending laterally from said body portion, wherein said second camming portion is engageable with said second jaw,
wherein said body portion of said firing member comprises an internal threaded section threadably engaged with said rotary drive shaft, and
wherein said internal threaded section comprises a plurality of rods forming threads of said internal threaded section.

18 more elements

A surgical stapling assembly, comprising:

a shaft assembly;
an articulation joint defining an articulation axis;
an end effector coupled to said shaft assembly by said articulation joint, wherein said end effector is configured to be articulated about said articulation axis relative to said shaft assembly, said end effector comprising:
an anvil;
a staple cartridge comprising a plurality of staples, wherein said staples are configured to be ejected from said staple cartridge during a staple firing stroke;
a first jaw;
and
a second jaw moveable relative to said first jaw;
and
a firing system, comprising:
a rotary drive system configured to generate rotary drive motions;
a rotary drive shaft configured to receive said rotary drive motions from said rotary drive system;
and
a firing member threadably coupled with said rotary drive shaft distal of said articulation joint, wherein, upon receiving rotary drive motions from said rotary drive shaft, said firing member is actuated to perform said staple firing stroke, wherein said firing member comprises:
a body portion;
a cutting member;
a first camming portion extending laterally from said body portion, wherein said first camming portion is engageable with said first jaw;
and
a second camming portion extending laterally from said body portion, wherein said second camming portion is engageable with said second jaw,
wherein said body portion of said firing member comprises an internal threaded section threadably engaged with said rotary drive shaft, and
wherein said internal threaded section comprises a pair of windows configured to receive a pair of cooperative threaded plugs.

18 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/223,849Filed 29 Jul 2016 · continuation
Priority: 28 Jun 2012
Published: US 2016/0331375 A117 Nov 2016
Granted: 20 Aug 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification51 codes

A61B 17/07207
For applying a row of staples in a single action, e.g. the staples being applied simultaneously: the staples being applied sequentially
A61B 17/068
Surgical instruments, devices or methods: surgical staplers , e.g. containing multiple staples or clamps
A61B 17/072
Surgical staplers , e.g. containing multiple staples or clamps: for applying a row of staples in a single action, e.g. the staples being applied…
A61B 17/295
Forceps for use in minimally invasive surgery: combined with cutting implements