Surgical instruments

• US 8,226,675 B2
• Filed: 03/22/2007
• Issued: 07/24/2012
• Est. Priority Date: 03/22/2007
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Houser, Kevin L., Zwolinski, Andrew M., Miller, Matthew C., Lopes, Tracy D.
• Primary Examiner(s): Severson, Ryan
• Assistant Examiner(s): Cronin, Ashley
• Application Number:
  US11/726,760
• Publication Number:
  US 20080234711A1
• Time in Patent Office: 1,951 Days
• Field of Search: 604/22, 606/37, 606/39, 606/40, 606/45, 606/46, 606/52, 606169-171, 606/174
• US Class Current: 606/169
• CPC Class Codes: A61B 17/320068 using mechanical vibrations, e.g. ultrasonic A61B17/22012 takes precedence; dental tooth drilling devices operated by vibration A61C3/03; removing intra-ocular material using mechanical vibrations A61F9/00745
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/22011 Combined types of vibration, e.g. ultrasonic and electrohydraulic
• CPC Class Codes: A61B 2017/320069 for ablating tissue
• CPC Class Codes: A61B 2017/320071 with articulating means for working tip
• CPC Class Codes: A61B 2017/320088 with acoustic insulation, e.g. elements for damping vibrations between horn and surrounding sheath
• CPC Class Codes: A61B 2017/320089 node location
• CPC Class Codes: A61B 2017/320094 additional movable means performing clamping operation
• CPC Class Codes: A61B 2017/320095 with sealing or cauterizing means

Abstract

A surgical instrument includes an elongated transmission waveguide defining a longitudinal axis. The transmission waveguide has a distal end and a proximal end. The at least one strike surface is formed on the proximal end and is configured to receive vibratory energy.

Claims

1. A surgical instrument, comprising:

an end effector comprising an ultrasonic blade and a clamp jaw, the clamp jaw comprising a proximal end, a distal end, a tissue engaging portion on a first side, and a longitudinal channel on a second side, wherein the clamp jaw is rotatable about a pivot point along an arcuate path from a closed tissue engaging position to a fully open position;

wherein in both the closed tissue engaging and the fully open positions the clamp jaw is substantially aligned with a longitudinal axis defined by the end effector;

wherein in the closed tissue engaging position the distal end of the clamp jaw is distal relative to the pivot point; and

wherein in the fully open position the distal end of the clamp jaw is proximal relative to the pivot point;

the surgical instrument further comprising;

an actuator member coupled to the clamp jaw, wherein a longitudinal portion of the actuator member is configured to translate to affect rotation of the clamp jaw between the closed tissue engaging position and the fully open position, and wherein the longitudinal portion of the actuator member translates within the longitudinal channel of the clamp jaw when the clamp jaw is in the fully open position.

2. The surgical instrument of claim 1, comprising a transducer configured to produce vibrations at a predetermined frequency along the longitudinal axis.

3. The surgical instrument of claim 2, comprising an signal generator coupled to the transducer.

4. The surgical instrument of claim 3, wherein the signal generator comprises an electric motor.

5. The surgical instrument of claim 3, wherein the signal generator comprises a hydraulic motor.

6. The surgical instrument of claim 3, wherein the signal generator comprises a pneumatic motor.

7. The surgical instrument of claim 2, comprising a waveguide acoustically coupled to the transducer and to the end effector.

8. The surgical instrument of claim 7, wherein the transducer is threadably connected to the waveguide by a stud.

9. The surgical instrument of claim 7, wherein the waveguide comprises a solid core shaft.

10. The surgical instrument of claim 7, wherein the waveguide and the end effector are formed as a single unit construction.

11. The surgical instrument of claim 2, wherein the end effector comprises at least one treatment region and a distal tip coupled to the transducer and is substantially aligned with the longitudinal axis, wherein the distal tip is movable relative to the axis by the vibrations produced by the transducer.

12. The surgical instrument of claim 11, wherein the distal tip moves in a range of about 30 to 150 microns.

13. The surgical instrument of claim 11, wherein the treatment region comprises the ultrasonic blade.

14. The surgical instrument of claim 13, wherein the ultrasonic blade comprises a broad generally flat top surface and a smooth generally round bottom surface.

15. The surgical instrument of claim 13, wherein the ultrasonic blade comprises a chisel shaped distal tip.

16. The surgical instrument of claim 1, wherein the longitudinal portion of the actuator member is movable in a first direction along the longitudinal axis to cause the clamp jaw to rotate about the pivot point along the arcuate path to the closed tissue engaging position and is movable in a second direction along the longitudinal axis to cause the clamp jaw to rotate about the pivot point along the arcuate path to toward the fully open position.

17. The surgical instrument of claim 16, wherein the clamp jaw further comprises an actuator engaging portion, wherein the actuator member is coupled to the clamp jaw at the actuator engaging portion, and wherein the actuator engaging portion of the clamp jaw comprises the longitudinal channel.

18. The surgical instrument of claim 17, wherein the actuator member comprises an opening extending longitudinally therethrough to receive the clamp jaw when the clamp jaw is in the fully open position and further comprises an actuator rod coupled to the clamp jaw positioned within the opening.

19. A method for processing a surgical instrument for surgery, comprising:

obtaining the surgical instrument of claim 1;

sterilizing the surgical instrument; and

storing the surgical instrument in a sterile container.

20. The surgical instrument of claim 1, further comprising an outer tube comprising:

a plurality of projections; and

a pivot point through the plurality of projections, wherein the proximal end of the clamp jaw is pivotally mounted to the outer tube at the pivot point;

wherein the longitudinal portion of the actuator member is configured to translate within the outer tube.

21. The surgical instrument of claim 20, wherein the outer tube further comprises:

a longitudinal lumen; and

an aperture through the outer tube to the longitudinal lumen, wherein the clamp jaw is configured to fit within the aperture when the clamp jaw is in the fully open position.

22. The surgical instrument of claim 1, wherein the tissue engaging portion of the clamp jaw comprises a clamp pad.

23. The surgical instrument of claim 22, wherein the clamp pad comprises a plurality of serrations that extend perpendicular to the longitudinal axis defined by the end effector.

24. An ultrasonic surgical instrument, comprising:

an end effector comprising an ultrasonic blade and a clamp jaw, the clamp jaw comprising a proximal end, a distal end, a tissue engaging portion, and an actuator engaging portion;

an outer tube comprising a pivot point, wherein the proximal end of the clamp jaw is pivotally mounted to the outer tube at the pivot point, wherein the clamp jaw is rotatable about the pivot point along an arcuate path from a closed tissue engaging position to a fully open position, and wherein in both the closed tissue engaging and fully open positions the clamp jaw is substantially aligned with a longitudinal axis defined by the end effector; and

an actuator member coupled to the actuator engaging portion of the clamp jaw, wherein a longitudinal portion of the actuator member is configured to move within the outer tube to cause the clamp jaw to rotate between the closed tissue engaging position and the fully open position;

wherein the actuator engaging portion of the clamp jaw comprises a longitudinal channel formed on a top surface of the clamp jaw to receive the longitudinal portion of the actuator member therein when the clamp jaw is in the fully open position.

25. The ultrasonic surgical instrument of claim 24, comprising a transducer configured to produce vibrations at a predetermined frequency along the longitudinal axis.

26. The ultrasonic surgical instrument of claim 25, wherein the end effector comprises at least one treatment region and a distal tip coupled to the transducer and is substantially aligned with the longitudinal axis, wherein the distal tip is movable relative to the axis by the vibrations produced by the transducer.

27. The ultrasonic surgical instrument of claim 26, wherein the treatment region comprises the ultrasonic blade.

28. The ultrasonic surgical instrument of claim 27, wherein the ultrasonic blade comprises a chisel shaped distal tip.

29. The ultrasonic surgical instrument of claim 27, wherein the ultrasonic blade comprises a broad generally flat top surface and a smooth generally round bottom surface.

30. The ultrasonic surgical instrument of claim 28, wherein the longitudinal portion of the actuator member is movable in a first direction along the longitudinal axis to cause the clamp jaw to rotate about the pivot point along the arcuate path to the closed tissue engaging position and is movable in a second direction along the longitudinal axis to cause the clamp jaw to rotate about the pivot point along the arcuate path to toward the fully open position.

31. The ultrasonic surgical instrument of claim 30, wherein the actuator member comprises an opening extending longitudinally therethrough to receive the clamp jaw when the clamp jaw is in the fully open position and further comprises an actuator rod coupled to the clamp jaw positioned within the opening.

32. A method for processing a surgical instrument for surgery, comprising:

obtaining the ultrasonic surgical instrument of claim 28;

sterilizing the ultrasonic surgical instrument; and

storing the ultrasonic surgical instrument in a sterile container.

33. A surgical instrument, comprising:

an end effector comprising an ultrasonic blade and a clamp jaw, the clamp jaw comprising a proximal end, a distal end, a tissue engaging portion on a first side, and a longitudinal channel on a second side, wherein the clamp jaw is rotatable about a pivot point along an arcuate path from a closed tissue engaging position to a fully open position;

wherein in the closed tissue engaging position the distal end of the clamp jaw is distal relative to the pivot point; and

wherein in the fully open position the distal end of the clamp jaw is proximal relative to the pivot point;

the surgical instrument further comprising;

an actuator member coupled to the clamp jaw, wherein a longitudinal portion of the actuator member is configured to translate to affect rotation of the clamp jaw between the closed tissue engaging position and the fully open position, and wherein the longitudinal portion of the actuator member translates within the longitudinal channel of the clamp jaw when the clamp jaw is in the fully open position.

34. A method for processing a surgical instrument for surgery, comprising:

obtaining the surgical instrument of claim 33;

sterilizing the surgical instrument; and

storing the surgical instrument in a sterile container.