US 8,453,907 B2Granted

Motor driven surgical fastener device with cutting member reversing mechanism

AssigneeEthicon Endo-Surgery, Inc.

InventorsRyan J. Laurent, Brett E. Swensgard, Bret W. Smith, Richard F. Schwemberger, Daniel J. Abbott, David C. Yates, Craig S. Smith, Frederick E. Shelton, IV

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Abstract

A surgical fastener apparatus including a handle, an elongated shaft having a proximal end attached to the handle and a distal end extending therefrom. An end effector comprising a pair of jaws pivoted at a proximal end thereof and movable between an open and closed position, and a cartridge containing a plurality of surgical fasteners, the cartridge attached to the end effector. An electrically powered actuator for deploying the surgical fasteners. An electrically activated reverse mechanism for moving the elongated member from a distal most position within the end effector to a proximal position, the electrically activated reverse mechanism moves the elongated member proximally after the elongated member has moved to the distal most position by moving the trigger to the open position, and wherein after activation of the reverse mechanism proximal movement of the elongated member can be stopped by returning the trigger to its closed position.

Claims18

Dependent claims

A surgical fastener apparatus comprising:

a. a handle, an elongated shaft having a proximal end attached to said handle and a distal end extending therefrom, an end effector comprising a pair of jaws pivoted at a proximal end thereof and movable between an open and closed position, and a cartridge containing a plurality of surgical fasteners, said cartridge attached to said end effector;
b. an electrically powered actuator for deploying said surgical fasteners, said actuator comprising a power source and a motor, said actuator including an elongated member extending through said shaft and movable distally into said end effector for deploying said staples and proximally back out of said end effector;
c. a trigger attached to said handle and including a deactivated position and an activated position, said trigger configured to actuate said actuator when in said activated position;
and
d. an electrically activated reverse mechanism for moving said elongated member from a distal most position within said end effector to a proximal position such that actuation of the electrically activated reverse mechanism causes, said trigger to be deactivated, and wherein after actuation of said reverse mechanism, proximal movement of said elongated member can be stopped by returning said trigger to its activated position.

2 more elements

A surgical fastener apparatus comprising:

a handle;
an end effector operably coupled to said handle;
an actuator movable within said end effector between an unactuated position to actuated positions within said end effector;
an electric motor operably interfacing with said actuator to selectively apply a distal driving motion thereto to move said actuator from said unactuated position to said actuated positions and to selectively apply a proximal driving motion to said actuator to retract said actuator to said unactuated position from said actuated positions;
a firing trigger operably coupled to said handle;
a motor control circuit for controlling the motor, said motor control circuit comprising:
a power source connected to said motor for electrically powering the motor;
and
a current control circuit connected to the power source for controlling current supplied to said motor from said power source, said current control circuit comprising:
a run motor control switch connected to said power source and operated by said firing trigger such that upon application of said actuation motion to said firing trigger, said run motor switch permits current to flow to said motor in a first direction to cause said motor to apply said distal driving motion to said actuator;
and
a reverse motor switch connected to said power source such that when said actuator has moved to a distal most actuated position, said reverse motor switch permits current to flow to said motor in a second direction to cause said motor to apply said proximal driving motion to said actuator, said current control circuit further configured to alter said application of said proximal driving motion upon receipt of an application of a retraction motion thereto.

9 more elements

A surgical fastener apparatus comprising:

a handle;
an elongated shaft having a proximal end attached to said handle;
a channel coupled to a distal end of said elongated shaft and configured to operably support a surgical staple cartridge therein;
an actuator movably supported for distal and proximal travel within said channel;
a firing trigger operably coupled to said handle;
a retraction trigger operably supported on said firing trigger;
an electric motor operably interfacing with said actuator to selectively apply a distal driving motion thereto to distally move said actuator from an unactuated position to actuated positions and to selectively apply a proximal driving motion to said actuator to retract said actuator to said unactuated position from said actuated positions;
and
a motor control circuit for controlling the motor, said motor control circuit comprising:
a power source connected to said motor for electrically powering the motor;
and
a current control circuit connected to the power source for controlling current supplied to said motor from said power source, said current control circuit comprising:
a run motor control switch connected to said power source and operated by said firing trigger such that upon application of said actuation motion to said firing trigger, said run motor control switch permits current to flow to said motor in a first direction to cause said motor to apply said distal driving motion to said actuator;
a reverse motor switch connected to said power source such that when said actuator has moved to a distal most actuated position, said reverse motor switch permits current to flow to said motor in a second direction to cause said motor to apply said proximal driving motion to said actuator;
and
a retraction switch connected to said power source and operated by said retraction trigger such that upon application of said retraction motion to said retraction trigger, said retraction switch alters said flow of current in said second direction to said motor.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/846,249Filed 29 Jul 2010 · continuation in part
Priority: 6 Feb 2009
Published: US 2011/0006103 A113 Jan 2011
Granted: 4 Jun 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

A61B 17/068
Surgical instruments, devices or methods: surgical staplers , e.g. containing multiple staples or clamps
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 90/30
Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00,…
A61B 2017/00398
Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like:…

Family

Application61/150,391Us provisional application · filed 6 Feb 2009
Application12/693,462Parent of this continuation-in-part · filed 26 Jan 2010
US 2011/0006103 A1Pre-grant publication · published 13 Jan 2011
US 2011/0024479 A1Published application
US 8,245,899 B2Related patent
US 8,453,907 B2This patent

From the US filing history. Foreign family members aren’t listed.