Powered surgical stapling device platform

• US 7,823,760 B2
• Filed: 05/01/2007
• Issued: 11/02/2010
• Est. Priority Date: 05/01/2007
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Racenet, David C., Zemlok, Michael
• Primary Examiner(s): Rada; Rinaldi I.
• Assistant Examiner(s): Lopez; Michelle
• Application Number:
  US11/799,766
• Publication Number:
  US 20080272172A1
• Time in Patent Office: 1,281 Days
• Field of Search: 227/175.1, 227/19, 227/175.2, 227/175.3, 227/182.1
• US Class Current: 227/175.1
• 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 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 2017/00084 Temperature
• CPC Class Codes: A61B 2017/00199 with a console, e.g. a control panel with a display
• CPC Class Codes: A61B 2017/00221 with wireless transmission of data, e.g. by infrared radiation or radiowaves
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2017/07221 curved
• 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 2017/2905 flexible
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• 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

Abstract

The present disclosure provides for a surgical instrument which includes a housing and an endoscopic portion extending distally from the housing and defining a first longitudinal axis. The surgical instrument also includes an end effector disposed adjacent a distal portion of the endoscopic portion. The end effector includes an anvil assembly and a cartridge assembly. The anvil assembly is pivotally coupled to the cartridge assembly to be movable from a first actuation position to at least one other second actuation position. The surgical instrument further includes a firing rod having a shaft defining a second longitudinal axis, the shaft having a cam member which is in mechanical cooperation with the anvil assembly and is configured to move the anvil assembly from the first actuation position to the at least one other second actuation position upon rotation of the firing rod about the second longitudinal axis.

Claims

1. A surgical instrument, comprising:

a housing;

an endoscopic portion extending distally from the housing and defining a first longitudinal axis;

an end effector disposed adjacent a distal portion of the endoscopic portion, the end effector including an anvil assembly and a cartridge assembly, the anvil assembly is pivotally coupled to the cartridge assembly between a first open position spaced from the cartridge assembly and a second position in approximation with the cartridge assembly;

a firing rod defining a second longitudinal axis, and a dual rotary cam member having a pair of opposing camming surfaces rotatable by the firing rod, the cam member being in contact with a proximal end of an inner surface of the anvil assembly and moving the anvil assembly between the first position and the second position, upon rotation of the firing rod about the second longitudinal axis.

2. A surgical instrument according to claim 1, wherein the firing rod includes a proximal shaft member disposed within the end effector and a distal shaft member disposed within the endoscopic portion.

3. A surgical instrument according to claim 2, wherein the proximal shaft member and the distal shaft member are pivotally linked.

4. A surgical instrument according to claim 2, wherein at least one of the proximal shaft member and the distal shaft member is flexible.

5. A surgical instrument according to claim 2, wherein the proximal shaft and the distal shaft include at least one surface feature along the length thereof.

6. A surgical instrument according to claim 5, wherein the at least one surface feature is selected from the group consisting of a non-circular cross-section and a curved shape.

7. A surgical instrument according to claim 1, wherein the end effector defines a third longitudinal axis, the end effector being movable from a first articulation position where the second longitudinal axis is substantially aligned with the first longitudinal axis to at least a second articulation position where the third longitudinal axis is disposed at an angle to the first longitudinal axis.

8. A surgical instrument, comprising:

a housing;

an endoscopic portion extending distally from the housing and defining a first longitudinal axis;

an end effector disposed adjacent a distal portion of the endoscopic portion, the end effector including a first jaw member and a second jaw member, the second jaw member is pivotally coupled to the first jaw member to be movable from a first actuation position to at least one other second actuation position; and

a firing rod including a shaft defining a second longitudinal axis, a dual rotary cam member having a pair of opposing camming surfaces rotatable by the firing rod, the cam member being in contact with a proximal end of an inner surface of the second jaw member and moving the second jaw member from the first actuation position to the at least one other second actuation position upon rotation of the firing rod about the second longitudinal axis.

9. A surgical instrument according to claim 8, wherein the firing rod includes a proximal shaft member disposed within the end effector and a distal shaft member disposed within the endoscopic portion.

10. A surgical instrument according to claim 9, wherein the proximal shaft member and the distal shaft member are pivotally linked.

11. A surgical instrument according to claim 9, wherein the proximal shaft and the distal shaft include at least one surface feature along the length thereof.

12. A surgical instrument according to claim 11, wherein the at least one surface feature is selected from the group consisting of a non-circular cross-section and a curved shape.

13. A surgical instrument according to claim 9, wherein the end effector defines a third longitudinal axis, the end effector being movable from a first articulation position where the second longitudinal axis is substantially aligned with the first longitudinal axis to at least a second articulation position where the third longitudinal axis is disposed at an angle to the first longitudinal axis.

14. A tool assembly, comprising:

an end effector disposed adjacent a distal endoscopic portion of the tool assembly and defining a first longitudinal axis, the end effector including an anvil assembly and a cartridge assembly, the anvil assembly is pivotally coupled to the cartridge assembly to be movable from a first actuation position to at least one other second position; and

a firing rod defining a second longitudinal axis, and a rotary cam member having a pair of opposing camming surfaces rotatable by the firing rod, the cam member being in contact with a proximal end of an inner surface of the anvil assembly and moving the anvil assembly between the first position and the second position, upon rotation of the firing rod about the second longitudinal axis.

15. A tool assembly according to claim 14, wherein the firing rod includes a proximal shaft member disposed within the end effector and a distal shaft member disposed within the endoscopic portion.

16. A tool assembly according to claim 15, wherein the proximal shaft member and the distal shaft member are pivotally linked.

17. A tool assembly according to claim 15, wherein the proximal shaft and the distal shaft include at least one surface feature along the length thereof.

18. A tool assembly according to claim 17, wherein the at least one surface feature is selected from the group consisting of a non-circular cross-section and a curved shape.

19. A tool assembly according to claim 14, wherein the end effector defines a third longitudinal axis, the end effector being movable from a first articulation position where the second longitudinal axis is substantially aligned with the first longitudinal axis to at least a second articulation position where the third longitudinal axis is disposed at an angle to the first longitudinal axis.