Surgical device including a control system

• US 10,682,141 B2
• Filed: 07/27/2017
• Issued: 06/16/2020
• Est. Priority Date: 02/14/2008
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon, LLC (Johnson & Johnson)
• Inventors: Moore, Kyle P., Shelton, IV, Frederick E., Weisenburgh, II, William B., Morgan, Jerome R., Ransick, Mark H., Timperman, Eugene L.
• Primary Examiner(s): Smith, Scott A
• Application Number:
  US15/661,994
• Publication Number:
  US 20180008270A1
• Time in Patent Office: 1,055 Days
• Field of Search: 227 19, 2271751, 2271752, 2271761, 2271801, 606139, 606153, 606219
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/0686 having a forming anvil staying below the tissue during stapling
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/076 for removing surgical staples or wound clamps
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133
• CPC Class Codes: A61B 17/3209 Incision instruments
• CPC Class Codes: A61B 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
• CPC Class Codes: A61B 2017/00017 Electrical control of surgical instruments
• CPC Class Codes: A61B 2017/00115 with audible or visual output with imaging means A61B90/37, A61B34/20
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/00415 having power generation near the working tip of the tool
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2017/0688 Packages or dispensers for surgical staplers
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07228 Arrangement of the staples
• CPC Class Codes: A61B 2017/07271 : characterised by its cartridge
• CPC Class Codes: A61B 2017/07278 : characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/2903 : transferring rotary motion
• CPC Class Codes: A61B 2017/2917 : with flexible part
• CPC Class Codes: A61B 2017/2923 : Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2017/2927 : the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2933 : camming or guiding means
• CPC Class Codes: A61B 2017/2936 : Pins in guiding slots
• CPC Class Codes: A61B 2017/320052 : Guides for cutting instruments by marking A61B2090/395
• CPC Class Codes: A61B 2017/320093 : additional movable means performing cutting operation
• CPC Class Codes: A61B 2017/320094 : additional movable means performing clamping operation
• CPC Class Codes: A61B 2017/320095 : with sealing or cauterizing means
• CPC Class Codes: A61B 2017/320097 : with stapling means
• CPC Class Codes: A61B 2018/00196 : reciprocating lengthwise
• CPC Class Codes: A61B 2018/00601 : Cutting
• CPC Class Codes: A61B 2018/0063 : Sealing
• CPC Class Codes: A61B 2018/1455 : having a moving blade for cutting tissue grasped by the jaws
• CPC Class Codes: A61B 2034/302 : specifically adapted for manipulations within body cavities, e.g. within abdominal or thoracic cavities
• CPC Class Codes: A61B 2090/0811 : for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
• CPC Class Codes: A61B 34/30 : Surgical robots
• CPC Class Codes: A61B 34/37 : Master-slave robots A61B34/35 takes precedence
• CPC Class Codes: A61B 34/70 : Manipulators specially adapted for use in surgery
• CPC Class Codes: A61B 50/20 : Holders specially adapted for surgical or diagnostic appliances or instruments drapes with means to hold surgical instruments A61B46/23; for catheters A61M25/02
• CPC Class Codes: A61B 50/24 : Stands Mayo stands A61B50/15
• CPC Class Codes: A61B 50/26 : floor-based
• CPC Class Codes: A61B 50/36 : for collecting or disposing of used articles

Abstract

A surgical device comprising a staple cartridge, a clamping mechanism configured to clamp patient tissue, a firing member, a manual bailout, an electric motor, a power source, and a control unit is disclosed. The clamping mechanism comprises a first iaw and a second iaw. The firing member configured to engage the first jaw and the second jaw during a closure stroke. The second jaw is moved to the closed position during the closure stroke and the firing member is further configured to eject staples from the staple cartridge during a firing stroke. The manual bailout is configured to retract the firing member through a retraction stroke. The electric motor is configured to drive the firing member. The control unit is configured to monitor a parameter of the electric motor and control the amount of current supplied to the electric motor based on the parameter.

Claims

1. A surgical device, comprising:

a staple cartridge comprising a plurality of staples removably stored therein;

a clamping mechanism configured to clamp patient tissue, wherein said clamping mechanism comprises a first jaw and a second jaw movable relative to said first jaw between an open position and a closed position;

a firing member configured to engage said first jaw and said second jaw during a closure stroke, wherein said second jaw is moved to said closed position during said closure stroke, and wherein said firing member is further configured to eject said staples from said staple cartridge during a firing stroke;

a manual bailout configured to retract said firing member through a retraction stroke when said manual bailout is actuated;

an electric motor configured to drive said firing member through said closure stroke and said firing stroke;

a power source configured to supply current to said electric motor; and

a control unit configured to monitor a parameter of said electric motor and to control the amount of current supplied to said electric motor based on said parameter, wherein said parameter is indicative of a clamping resistance experienced by said clamping mechanism when said clamping mechanism clamps the patient tissue.

2. The surgical device of claim 1, wherein said control unit is further configured to prevent the operation of said electric motor beyond a predetermined maximum limit based on predetermined properties of the patient tissue to be clamped.

3. The surgical device of claim 1, further comprising means for stopping said electric motor when said clamping mechanism encounters resistance that exceeds a predetermined amount of resistance.

4. The surgical device of claim 3, wherein said means for stopping said electric motor comprises a current limiter operably coupled to said electric motor.

5. A surgical device, comprising:

an end effector, comprising;

a first jaw; and

a second jaw movable relative to said first jaw between an unclamped position and a clamped position, wherein said second jaw is configured to clamp patient tissue in said clamped position, and wherein said second jaw experiences a force from the patient tissue when said second jaw is in said clamped position;

an I-beam configured to engage said first jaw and said second jaw during a closure stroke, wherein said second jaw is moved to said clamped position during said closure stroke;

a bailout operably engaged with said I-beam, wherein said bailout is configured to be manually actuated to retract said I-beam through a retraction stroke;

an electric motor configured to drive said I-beam through said closure stroke;

a power source configured to supply power to said electric motor; and

a control unit configured to monitor a parameter of said electric motor, wherein said parameter is indicative of said force experienced by said second jaw, and wherein said control unit is further configured to control the amount of power supplied from said power source to said electric motor based on said parameter.

6. The surgical device of claim 5, wherein said control unit is further configured to prevent the operation of said electric motor beyond a predetermined maximum limit based on predetermined properties of the patient tissue to be clamped.

7. The surgical device of claim 5, further comprising means for stopping said electric motor when said second jaw experiences resistance that exceeds a predetermined amount of resistance.

8. The surgical device of claim 7, wherein said means for stopping said electric motor comprises a current limiter operably coupled to said electric motor.

9. A surgical device, comprising:

a clamping mechanism configured to clamp patient tissue, wherein said clamping mechanism comprises a first jaw and a second jaw movable relative to said first jaw between an open position and a closed position;

a firing member configured to perform a firing stroke, wherein said firing member comprises;

a first cam member configured to engage said first jaw during said firing stroke; and

a second cam member configured to engage said second jaw and move said second jaw to said closed position during said firing stroke;

a mechanical bailout configured to retract said firing member through a retraction stroke when said mechanical bailout is actuated;

an electric motor configured to drive said firing member through said firing stroke; and

a control unit configured to monitor the current supplied to said electric motor, wherein said current is indicative of a clamping resistance experienced by said clamping mechanism when said clamping mechanism clamps the patient tissue, and wherein said control unit is further configured to limit the current supplied to said electric motor.

10. The surgical device of claim 9, wherein said control unit is further configured to prevent the operation of said electric motor beyond a predetermined maximum current limit based on predetermined properties of the patient tissue to be clamped.

11. The surgical device of claim 9, further comprising means for stopping said electric motor when said clamping mechanism encounters resistance that exceeds a predetermined amount of resistance.

12. The surgical device of claim 11, wherein said means for stopping said electric motor comprises a current limiter operably coupled to said electric motor.