Detachable motor powered surgical instrument

• US 10,307,163 B2
• Filed: 07/27/2017
• Issued: 06/04/2019
• 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:
  US15/661,984
• Publication Number:
  US 20180008269A1
• Time in Patent Office: 677 Days
• Field of Search: 227 19, 2271752, 2271753, 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 instrument comprising a handle, a motor configured to output a rotary motion, a drive system operably responsive to the rotary motion, a power source configured to supply power to the motor, an end effector, a firing member operably responsive to the drive system, and means for monitoring the current supplied to the motor and limiting the current supplied to the motor when the current draw exceeds a predetermined threshold is disclosed.

Claims

1. A surgical instrument for cutting and stapling patient tissue, comprising:

a handle;

a motor configured to output rotary motion;

a drive system operably responsive to said rotary motion;

a power source configured to supply power to said motor;

an elongate shaft extending from said handle;

a disposable loading unit attachable to said elongate shaft, wherein said disposable loading unit comprises;

a first jaw;

a second jaw movable relative to said first jaw between an open position and a closed position, wherein the patient tissue is clamped between said first jaw and said second jaw when said second jaw is in said closed position;

a carrier configured to operably support a staple cartridge;

an anvil; and

a firing member operably responsive to said drive system, wherein said firing member is configured to move within said disposable loading unit during a firing stroke, and wherein said firing member comprises;

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

a second camming member configured to engage said second jaw during said firing stroke; and

a knife blade configured to incise the patient tissue during said firing stroke; and

a control circuit configured to monitor the current drawn by said motor during said firing stroke and stop said firing stroke when the current drawn by said motor exceeds a threshold value.

2. The surgical instrument of claim 1, wherein said threshold value of said current exceeds the amount of current drawn during a normal firing stroke.

3. The surgical instrument of claim 1, wherein said disposable loading unit comprises said staple cartridge.

4. A surgical instrument, comprising:

a housing;

a motor configured to output rotary motion;

a battery configured to supply power to said motor;

an elongate shaft extending from said housing, wherein said elongate shaft is couplable to an end effector assembly, and wherein said end effector assembly comprises;

a channel configured to receive a staple cartridge therein;

an anvil movably coupled to said channel, wherein said anvil is movable between an open position and a clamped position; and

a knife assembly operably responsive to said rotary motion, wherein said knife assembly is configured to move within said end effector assembly during a tissue cutting stroke, and wherein said knife assembly comprises;

a first clamping member configured to engage said anvil during said tissue cutting stroke;

a second clamping member configured to engage said channel during said tissue cutting stroke; and

a cutting portion configured to incise patient tissue during said tissue cutting stroke;

a control circuit configured to monitor the current draw of said motor; and

means for limiting the current supplied to said motor when said current draw exceeds a predetermined threshold.

5. The surgical instrument of claim 4, wherein said predetermined threshold exceeds the amount of current drawn during a normal cutting stroke.

6. The surgical instrument of claim 5, wherein said end effecor assembly comprises said staple cartridge.

7. A surgical instrument, comprising:

a handle;

a motor configured to output a rotary motion;

a drive system operably responsive to said rotary motion;

a power source configured to supply power to said motor;

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 patient tissue is clamped between said first jaw and said second jaw when said second jaw is in said clamped position; and

a firing member operably responsive to said drive system, wherein said firing member is configured to move through said end effector during a firing stroke, and wherein said firing member comprises;

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

a second camming member configured to engage said second jaw during said firing stroke; and

a knife configured to incise the patient tissue during said firing stroke; and

means for monitoring the current supplied to said motor and limiting the current supplied to said motor when said current draw exceeds a predetermined threshold.

8. The surgical instrument of claim 7, further comprising a staple cartridge comprising a plurality of staples removably stored therein.