Motor-driven surgical cutting and fastening instrument with tactile position feedback

Patent metadata

Field	Value
Publication number	US-11246616-B2
Application number	US-201916388162-A
Country	US
Kind code	B2
Filing date	Apr 18, 2019
Priority date	Jan 31, 2006
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A surgical cutting and fastening instrument is disclosed. According to various embodiments, the instrument includes an end effector comprising an elongate channel, a clamping member pivotably connected to the channel, and a moveable cutting instrument for traversing the channel to cut an object clamped in the end effector by the clamping member when the clamping member is in a clamped position. The instrument may also comprise a main drive shaft assembly for actuating the cutting instrument in the end effector, a gear drive train connected to the main drive shaft assembly, and a motor for actuating the gear drive train. The instrument may also includes a closure trigger and a firing trigger, separate from the closure trigger, for actuating the motor when the firing trigger is retracted. Also, the instrument may comprise a mechanical closure system connected to the closure trigger and to the clamping member for causing the clamping member to pivot to the clamped position when the closure trigger is retracted.

First claim

What is claimed is:

1. A surgical instrument, comprising:
an end effector, comprising:
a first jaw comprising a proximal end and a distal end;
a second jaw rotatable relative to said first jaw between an open position and a closed position;
a staple cartridge including staples removably stored therein; and
a cutting member movable distally during a staple firing stroke;

a closure drive system comprising a closure member configured to slide distally to move said second jaw into said closed position; and
a firing drive system, comprising:
a variable speed electric motor;
a firing trigger actuatable to actuate said variable speed electric motor in a rotational direction to drive said cutting member through said staple firing stroke, wherein rotational speed of said variable speed electric motor is proportional to rotational movement of said firing trigger; and
a control system including an electronic reversing switch which reverses the rotational direction of said variable speed electric motor after said staple firing stroke has been completed and said firing trigger has been released.

2. The surgical instrument of claim 1 , wherein said staple cartridge is replaceable.

3. The surgical instrument of claim 1 , wherein said cutting member comprises a first cam configured to engage said first jaw and a second cam configured to engage said second jaw.

4. The surgical instrument of claim 1 , wherein said closure drive system further comprises a closure trigger, and wherein said closure trigger is positioned proximally relative to said firing trigger.

5. A surgical instrument, comprising:
an end effector, comprising:
a first jaw comprising a proximal end and a distal end;
a second jaw rotatable relative to said first jaw between an open position and a closed position; and
a cutting member movable distally during a firing stroke; and

a firing drive system, comprising:
a variable speed electric motor;
a firing trigger actuatable to actuate said variable speed electric motor in a rotational direction to drive said cutting member through said firing stroke, wherein rotational speed of said variable speed electric motor is proportional to rotational movement of said firing trigger; and
a control system including a reversing sensor circuit which reverses the rotational direction of said variable speed electric motor after said firing stroke has been completed and said firing trigger has been released.

6. The surgical instrument of claim 5 , further comprising a replaceable staple cartridge.

7. The surgical instrument of claim 5 , wherein said cutting member comprises a first cam configured to engage said first jaw and a second cam configured to engage said second jaw.

Assignees

• Ethicon Llc
• Cilag Gmbh Int

Inventors

• Shelton Iv Frederick E
• Swayze Jeffrey S
• Doll Kevin R
• Timperman Eugene L

Classifications

• A61B17/07207 Primary

  the staples being applied sequentially · CPC title

• A61B17/32 Primary

  Surgical cutting instruments ({A61B18/042 takes precedence; suture cutters A61B17/0467;} implements for ligaturing and cutting {A61B17/122, A61B17/12; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133}) · CPC title

• A61B2017/00398

  using powered actuators, e.g. stepper motors, solenoids · CPC title

• A61B17/105

  Wound clamp magazines (for packaging sharps A61B50/3001) · CPC title

• A61B2017/00734

  battery operated · CPC title