Apparatus for endoscopic procedures

Patent metadata

Field	Value
Publication number	US-9402604-B2
Application number	US-201313889437-A
Country	US
Kind code	B2
Filing date	May 8, 2013
Priority date	Jul 20, 2012
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

An electromechanical surgical system is provided including a hand-held surgical instrument; an end effector; and a shaft assembly for selectively interconnecting the end effector and the surgical device. The shaft assembly includes a transmission housing; an outer tubular body; a distal neck housing for interconnecting a rotatable drive member of the surgical instrument and a rotation receiving member supported in the end effector, wherein the distal neck housing includes at least one gear system configured to convert a rotational input of the rotatable drive member into at least two output forces to the end effector; and an articulating neck assembly interconnecting the tubular body and the distal neck housing. The articulating neck assembly enables off-axis articulation of the distal neck assembly, and wherein the rotatable drive member extends through the articulating neck assembly.

First claim

What is claimed is:

1. An electromechanical surgical system, comprising:
a hand-held surgical instrument including an instrument housing defining a connecting portion for selectively connecting with a shaft assembly, the surgical instrument having at least one rotatable drive member;
an end effector configured to perform at least one function; and
the shaft assembly being arranged for selectively interconnecting the end effector and the surgical device, the shaft assembly including:
a transmission housing configured and adapted for selective connection to the connecting portion of the surgical device and to be in operative communication with each of the at least one rotatable drive member of the surgical device;
an outer tubular body having a proximal end supported by the transmission housing and a distal end configured and adapted for operative connection with the end effector;
a distal neck housing for interconnecting a rotatable drive member of the surgical instrument and a rotation receiving member supported in the end effector, wherein the distal neck housing includes a first end that is connectable to one rotatable drive member of the surgical instrument and a second end that is connectable to the rotation receiving member of the end effector, wherein the force transmitting assembly transmits a rotation of the rotatable drive member of the surgical instrument to the rotation receiving member of the end effector, the distal neck assembly including:
at least one gear system configured to convert a rotational input of the rotatable drive member into at least two output forces to the end effector; and

an articulating neck assembly interconnecting the tubular body and the distal neck housing, wherein the articulating neck assembly is configured to enable off-axis articulation of the distal neck assembly, and wherein the rotatable drive member extends through the articulating neck assembly.

2. The electromechanical surgical system according to claim 1 , wherein a first output force of the at least one gear system of the distal neck housing results in a firing of the end effector.

3. The electromechanical surgical system according to claim 2 , wherein a first output force of the at least one gear system of the distal neck housing results in a rotation of the end effector relative to the shaft assembly.

4. The electromechanical surgical system according to claim 3 , wherein the distal neck housing non-rotatably and slidably supports a lock collar gear, wherein the lock collar gear includes a first position wherein the first output force of the at least one gear system of the distal neck housing results in the firing of the end effector, and wherein the first output force of the at least one gear system of the distal neck housing results in the rotation of the end effector relative to the shaft assembly.

5. The electromechanical surgical system according to claim 4 , wherein the distal neck housing includes:
an outer tubular housing defining at least one tooth extending radially inward therefrom; and
a first gear system supported in the outer tubular housing, the first gear system includes:
a first sun gear drivable by the one rotatable drive member of the surgical instrument;
a ring gear rotatably supported in the outer tubular housing;
at least one first planet gear interposed and inter-engaging the first sun gear and the ring gear; and
a carrier rotatably supported in the outer tubular housing, the carrier including a respective stem rotatably supporting each first planet gear;

wherein, in one mode of operation, when the first sun gear is rotated, each first planet gear is caused to be revolved about a center axis of the first sun gear, resulting in a firing of the end effector; and
wherein, in another mode of operation, when the first sun gear is rotated, each first planet gear is caused to be rotated about a respective axis of rotation thereof, resulting in a rotation of the end effector.

6. The electromechanical surgical system according to claim 5 , wherein the distal neck housing includes:
a crown gear non-rotatably connected to the carrier; and
a lock collar gear axially, non-rotatably and slidably supported in the outer tubular housing,
wherein the lock collar gear includes a first position wherein the lock collar gear engages the crown gear and prevents the crown gear from rotate, wherein non-rotation of the crown gear permits the rotation of the end effector, and
wherein the lock collar gear includes a second position wherein the lock collar gear is disengaged from the crown gear and permits the crown gear to rotating, wherein rotation of the crown gear permits the firing of the end effector.

7. The electromechanical surgical system according to claim 6 , wherein the distal neck housing includes:
a rotation hub non-rotatably supported in outer tubular housing; and
a second gear system supported in the rotation hub, the second gear system includes:
a second sun gear non-rotatably connected to the carrier; and
at least one second planet gear rotatably supported in the rotation hub and inter-engaged with the second sun gear; and
a firing connector connected to one of the at least one second planet gear, wherein the firing connector is configured to engage a force receiving member of the end effector;

wherein when the carrier rotates, the second sun gear is rotated to rotate the at least one second planet gear and to fire the end effector.

8. The electromechanical surgical system according to claim 6 , wherein the distal neck housing includes a first clutch mechanism interposed between and interconnecting the lock collar gear and the crown gear, when the lock collar gear is in the first position.

9. The electromechanical surgical system according to claim 8 , wherein the distal neck housing includes a second clutch mechanism interposed between and interconnecting the lock collar gear and the first ring gear, when the lock collar gear is in the second position.

10. The electromechanical surgical system according to claim 9 , wherein at least one of the first clutch mechanism and the second clutch mechanism includes friction enhancing materials interposed between respective lock collar gear and crown gear, and lock collar gear and first ring gear.

11. The electromechanical surgical system according to claim 1 , wherein the hand-held surgical instrument further includes:
at least one drive motor supported in the instrument housing and being configured to rotate the at least one rotatable drive member;
a battery disposed within the instrument housing for powering the at least one drive motor; and
a circuit board disposed within the instrument housing for controlling power delivered from the battery to the motor.

12. The electromechanical surgical system according to claim 11 , wherein the end effector includes:
an upper jaw and a lower jaw, at least one of the upper jaw and the lower jaw being movable in relation to the other of the upper jaw and the lower jaw;
a cartridge assembly supported in the lower jaw, the cartridge assembly including a plurality of staples therein; and
at least one surgical buttress releasably secured to a tissue contacting surface of at least one of the upper jaw and the lower jaw, the at least one surgical buttress secured to the at least one of the upper jaw and the lower jaw by at least one suture, the at least one of the upper jaw and the lower jaw being configured to receive a portion of the at least one suture.

13. The electromechanical surgical system according to claim 12 , wherein the lower jaw of the end effector is configured to selectively receive a cartridge assembly, wherein

Assignees

• Covidien Lp

Inventors

• Williams Justin
• Scirica Paul A
• Aranyi Ernest
• Kostrzewski Stanislaw

Classifications

• A61B2017/00327

  with actuating members moving in opposite directions · CPC title

• A61B2017/2903

  transferring rotary motion · CPC title

• A61B17/07292

  Reinforcements for staple line, e.g. pledgets · CPC title

• A61B2017/00367

  Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like · CPC title

• A61B17/072

  for applying a row of staples in a single action, e.g. the staples being applied simultaneously · CPC title