Surgical instrument comprising a lockout

• US 10,368,867 B2
• Filed: 04/18/2016
• Issued: 08/06/2019
• Est. Priority Date: 04/18/2016
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon, LLC (Johnson & Johnson)
• Inventors: Harris, Jason L., Shelton, IV, Frederick E., Hess, Christopher J., Morgan, Jerome R.
• Primary Examiner(s): Chukwurah, Nathaniel C
• Application Number:
  US15/131,311
• Publication Number:
  US 20170296172A1
• Time in Patent Office: 1,205 Days
• Field of Search: 227 19, 2271752-1801
• 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 17/072 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 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 2017/00017 Electrical control of surgical instruments
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• 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 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/00544 pneumatically
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2017/00876 magnetic
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07257 characterised by its anvil
• 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 2017/07285 characterised by its cutter
• CPC Class Codes: A61B 2017/2902 characterized by features of the actuating rod
• CPC Class Codes: A61B 2017/2903 transferring rotary motion
• CPC Class Codes: A61B 2017/2927 : the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2943 : Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2017/2946 : Locking means
• CPC Class Codes: A61B 2090/034 : abutting on parts of the device itself
• CPC Class Codes: A61B 2090/0803 : Counting the number of times an instrument is used
• CPC Class Codes: A61B 2090/0808 : for indicating correct assembly of components, e.g. of the surgical apparatus
• 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 2090/0814 : Preventing re-use
• CPC Class Codes: A61B 90/98 : using electromagnetic means, e.g. transponders

Abstract

A surgical stapling system comprising a lockout is disclosed. The lockout is configured to prevent the stapling system from performing a stapling firing function if an unspent staple cartridge is not fully seated in the stapling system. In various instances, the lockout is configured to permit the stapling system to perform a jaw clamping function even though an unspent staple cartridge is not fully seated in the stapling system.

Claims

1. A surgical instrument system, comprising:

an unspent staple cartridge comprising staples removably stored therein;

a firing drive comprising a firing member movable between a proximal position and a distal position to eject said staples from said unspent staple cartridge during a firing stroke;

an end effector, comprising;

a first jaw configured to receive said unspent staple cartridge; and

a second jaw comprising an anvil configured to deform said staples;

a sensor system configured to detect whether said unspent staple cartridge is seated in said first jaw;

a firing drive lockout configurable in;

a locked configuration in which said firing drive lockout is engaged with said firing member and prevents said firing member from being moved through said firing stroke; and

an unlocked configuration in which said firing drive lockout is disengaged from said firing member;

a biasing member configured to bias said firing drive lockout into said locked configuration; and

a controller, wherein said sensor system and said firing drive lockout are in communication with said controller, and wherein said controller is configured to place said firing drive lockout in said unlocked configuration when said sensor system detects that said unspent staple cartridge is seated in said first jaw.

2. The surgical instrument system of claim 1, wherein said firing drive lockout comprises:

a lock, wherein said biasing member is configured to push said lock into engagement with said firing member; and

an electric actuator configured to push said lock out of engagement with said firing member.

3. The surgical instrument system of claim 2, wherein said electric actuator comprises a solenoid.

4. The surgical instrument system of claim 2, wherein said firing member comprises an elongate longitudinal lock aperture defined therein, and wherein said lock is biased into said elongate longitudinal lock aperture by said biasing member.

5. The surgical instrument system of claim 4, wherein one of said first jaw and said second jaw comprises a movable jaw rotatable between an open position and a closed position, wherein said firing member is configured to engage said movable jaw and move said movable jaw from said open position to said closed position during a closing stroke, and wherein said elongate longitudinal lock aperture is configured to permit said firing member to be moved through said closing stroke when said firing drive lockout is in said locked configuration.

6. The surgical instrument system of claim 1, wherein said second jaw is rotatable relative to said first jaw between an open position and a closed position, and wherein said firing member is configured to engage said second jaw and move said second jaw from said open position to said closed position during a closing stroke.

7. The surgical instrument system of claim 1, wherein said first jaw is rotatable relative to said second jaw between an open position and a closed position, and wherein said firing member is configured to engage said first jaw and move said first jaw from said open position to said closed position during a closing stroke.

8. The surgical instrument system of claim 7, wherein said firing drive lockout does not prevent said firing member from being moved through said closing stroke.

9. The surgical instrument system of claim 1, wherein said firing drive further comprises:

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

a battery, wherein said controller is in communication with said electric motor and said battery, wherein said controller is configured to prevent said battery from supplying electrical power to said electric motor to perform said firing stroke when said sensor system detects that said unspent staple cartridge is not seated in said first jaw.

10. The surgical instrument system of claim 1, wherein said unspent staple cartridge comprises a sled movable between an unfired position and a fired position by said firing member during said firing stroke, wherein said sled is in said unfired position in said unspent staple cartridge, and wherein said unspent staple cartridge becomes a spent staple cartridge when said sled is moved toward said fired position during said firing stroke.

11. The surgical instrument system of claim 10, wherein said sensor system comprises an electrical circuit in an open condition when said unspent staple cartridge is not seated in said first jaw, wherein said sled comprises a conductive portion which closes said electrical circuit when said unspent staple cartridge is seated in said first jaw to place said electrical circuit in a closed condition, and wherein said controller is configured to determine whether said electrical circuit is in said open condition and said closed condition.

12. The surgical instrument system of claim 11, wherein said electrical circuit comprises a first electrical contact and a second electrical contact, wherein said conductive portion of said sled is engaged with said first electrical contact and said second electrical contact when said unspent staple cartridge is seated in said first jaw, and wherein said conductive portion of said sled is not engaged with at least one of said first electrical contact and said second electrical contact to re-open said electrical circuit once said sled has been moved toward said fired position.

13. The surgical instrument system of claim 12, wherein said firing drive further comprises:

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

a battery, wherein said controller is in communication with said electric motor and said battery, and wherein said controller is configured to permit said battery to supply electrical power to said electric motor to complete said firing stroke after said sensor system detects that said electrical circuit has been re-opened.

14. The surgical instrument system of claim 11, wherein said firing member comprises a cutting portion, and wherein said cutting portion is configured to transect said conductive portion of said sled during said firing stroke to re-open said electrical circuit.

15. The surgical instrument system of claim 14, wherein said firing drive further comprises:

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

a battery, wherein said controller is in communication with said electric motor and said battery, and wherein said controller is configured to permit said battery to supply electrical power to said electric motor to complete said firing stroke after said sensor system detects that said electrical circuit has been re-opened.

16. The surgical instrument system of claim 11, wherein one of said first jaw and said second jaw comprises a movable jaw movable between an open position and a closed position, wherein said firing member is configured to engage said movable jaw and move said movable jaw from said open position to said closed position during a closing stroke, and wherein said firing drive further comprises:

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

a battery, wherein said controller is in communication with said electric motor and said battery, and wherein said controller is configured to permit said battery to supply electrical power to said electric motor to perform said closing stroke when said unspent staple cartridge is not seated within said first jaw.

17. A surgical instrument system, comprising:

an unspent staple cartridge comprising staples removably stored therein, wherein said unspent staple cartridge becomes a spent staple cartridge after at least one of said staples has been ejected therefrom;

a firing drive comprising a firing member movable between a proximal position and a distal position to eject said staples from said unspent staple cartridge during a firing stroke to staple the tissue of a patient, wherein said firing drive comprises a cutting edge configured to incise the tissue being stapled;

an end effector, comprising;

a first jaw configured to receive said unspent staple cartridge; and

a second jaw comprising an anvil configured to deform said staples;

a sensor system configured to detect whether said unspent staple cartridge has been seated in said first jaw and whether said unspent staple cartridge has become said spent staple cartridge;

a firing drive lockout configurable in;

a locked configuration in which said firing drive lockout is engaged with said firing member and prevents said firing member from being moved through said firing stroke; and

an unlocked configuration in which said firing drive lockout is disengaged from said firing member; and

a controller, wherein said sensor system and said firing drive lockout are in communication with said controller, wherein said controller is configured to place said firing drive lockout in said unlocked configuration when said sensor system detects that said unspent staple cartridge has been seated in said first jaw, and wherein said controller is configured to place said firing drive lockout in said locked configuration if said unspent staple cartridge has not been seated in said first jaw.