Clamping of Hybrid Surgical Instrument

• US 20110278343A1
• Filed: 06/03/2009
• Published: 11/17/2011
• Est. Priority Date: 01/29/2009
• Status: Abandoned Application

• Current Assignee: Aesculap AG (Lonza Group AG)
• Original Assignee: Cardica Incorporated
• Inventors: Van Cleave, Jared L., Park, Jinhoon, Knodel, Bryan D., Manoux, Philipe R., Murillo, Michael, White, Nathan H.
• Application Number:
  US12/477,302
• Publication Number:
  US 20110278343A1
• Time in Patent Office: Days
• US Class Current: 227/176.1
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• 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 2017/0088 ceramic
• CPC Class Codes: A61B 2017/0725 with settable gap between anvil and cartridge, e.g. for different staple heights at different shots
• CPC Class Codes: A61B 2017/07271 characterised by its cartridge
• CPC Class Codes: A61B 2017/2933 camming or guiding means
• CPC Class Codes: A61B 2017/2936 Pins in guiding slots

Abstract

One example of a surgical instrument may include a staple holder; staples held by the staple holder; an anvil, where at least one of the staple holder and anvil is movable relative to the other; and at least one electrode located on a surface of the staple holder and/or anvil. Another example of a surgical instrument may include a staple holder; staples held by the staple holder; an anvil, where at least one of the staple holder and the anvil is movable relative to the other between an open configuration and a closed configuration; where an adjustable gap exists between the staple holder and the anvil in the closed configuration; and at least one electrode located on a surface of at least one of the staple holder and/or anvil. An exemplary method may include providing a surgical instrument including an end effector; clamping tissue with the end effector; selecting stapling or electrocautery; and stapling or performing electrocautery accordingly.

Claims

1. Surgical apparatus, comprising:

a staple holder;

a plurality of staples held by said staple holder;

an anvil, wherein at least one of said staple holder and said anvil is movable relative to the other; and

at least one electrode located on a surface of at least one of said staple holder and said anvil.

2. The surgical apparatus of claim 1, incorporating by reference all of the elements of that claim;

further comprising at least one feeder belt, wherein at least part of at least one said feeder belt extends into said staple holder;

wherein at least one of said staples is fixed to and frangibly separable from a corresponding said feeder belt.

3. The surgical apparatus of claim 1, incorporating by reference all of the elements of that claim;

wherein at least one said electrode is located on said staple holder and on said anvil, said at least one electrode on said anvil facing said at least one electrode on said staple holder;

wherein said at least one electrode on said staple holder defines a first pole and said at least one electrode on said anvil defines a second pole.

4. The surgical apparatus of claim 1, incorporating by reference all of the elements of that claim;

wherein said staple holder includes an upper surface through which a plurality of apertures are defined, whereby said staples exit said staple holder through said apertures;

wherein at least one said electrode is positioned on said upper surface laterally outward from said apertures.

5. The surgical apparatus of claim 1, incorporating by reference all of the elements of that claim;

wherein at least one said electrode is generally U-shaped.

6. The surgical apparatus of claim 1, incorporating by reference all of the elements of that claim;

wherein at least part of at least one of said anvil and said staple holder is ceramic, wherein at least one said electrode is positioned on and insulated by said ceramic.

7. Surgical apparatus, comprising:

a staple holder;

a plurality of staples held by said staple holder;

an anvil, wherein at least one of said staple holder and said anvil is movable relative to the other between an open configuration and a closed configuration; and

wherein an adjustable gap exists between said staple holder and said anvil in said closed configuration; and

at least one electrode located on a surface of at least one of said staple holder and said anvil.

8. The surgical apparatus of claim 7, incorporating by reference all of the elements of that claim;

further comprising at least one feeder belt, wherein at least part of at least one said feeder belt extends into said staple holder;

wherein at least one of said staples is fixed to and frangibly separable from a corresponding said feeder belt.

9. The surgical apparatus of claim 7, incorporating by reference all of the elements of that claim;

wherein said anvil is rotatable relative to said staple holder about a pin, and wherein said staple holder includes a generally vertically-oriented slot that receives said pin;

wherein said anvil is biased toward said open configuration;

further comprising a stepped adjustment bar slidable between said staple holder and said anvil to selectively urge said anvil away from said staple holder and thereby move said pin upward in said slot.

10. The surgical apparatus of claim 7, incorporating by reference all of the elements of that claim;

wherein the proximal end of at least one of said anvil and said staple holder includes a two-stage cam surface;

further comprising an overtube slidable relative to said anvil and said staple holder to engage successively each said cam surface.

11. The surgical apparatus of claim 7, incorporating by reference all of the elements of that claim;

further comprising an overtube having a lumen therein, said overtube slidable relative to said anvil and said staple holder, wherein the distal end of said lumen of said overtube includes a two-stage cam surface slidable to engage the proximal end at least one of said anvil and said staple holder.

12. The surgical apparatus of claim 7, incorporating by reference all of the elements of that claim;

further comprising an upwardly-biased cam arm connected to the proximal end of said anvil and an overtube slidable relative to said anvil to engage said cam arm.

13. The surgical apparatus of claim 7, incorporating by reference all of the elements of that claim;

wherein at least one said electrode is attached to and biased away from said anvil.

14. The surgical apparatus of claim 13, incorporating by reference all of the elements of that claim;

wherein one end of at least one said electrode is pivotally connected to said anvil.

15. The surgical apparatus of claim 7, incorporating by reference all of the elements of that claim;

wherein at least one of said anvil and said staple holder includes a flexible convex surface oriented toward the other of said anvil and said staple holder, wherein said flexible convex surface deflects and flattens upon application of a threshold force thereto.

16. The surgical apparatus of claim 7, incorporating by reference all of the elements of that claim;

wherein at least part of at least one of said anvil and said staple holder is ceramic, wherein at least one said electrode is positioned on and insulated by said ceramic.

17. The surgical apparatus of claim 16, incorporating by reference all of the elements of that claim;

further comprising a feedback wire connected to said ceramic, wherein said ceramic generates a piezoelectric current in said closed configuration based on stress experienced by said anvil, and wherein said current is transmitted along said feedback wire.

18. A surgical method of treating tissue within the body of a patient, comprising:

providing a surgical instrument including an end effector;

clamping tissue with said end effector;

selecting an operating mode from the group consisting of stapling and electrocautery; and

actuating said surgical instrument according to said selecting.

19. The surgical apparatus of claim 18, incorporating by reference all of the elements of that claim;

wherein said end effector includes an anvil and a staple holder, at least one of which is movable relative to the other;

further comprising performing said selecting before said clamping;

wherein said clamping adjusts a gap between said staple holder and said anvil based on said selecting.

20. The surgical apparatus of claim 18, incorporating by reference all of the elements of that claim;

further comprising unclamping said end effector, and repeating said clamping and said selecting without removing said surgical instrument from the patient.

21. The surgical apparatus of claim 18, incorporating by reference all of the elements of that claim;

wherein said stapling and said electrocautery are mutually exclusive.

22. The surgical apparatus of claim 18, incorporating by reference all of the elements of that claim;

further comprising, after said stapling, advancing a plurality of staples into said end effector from a remainder of said surgical instrument.