SURGICAL DEVICE HAVING A ROTATABLE JAW PORTION

• US 20110132960A1
• Filed: 02/15/2011
• Published: 06/09/2011
• Est. Priority Date: 09/21/2007
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Whitman, Michael P., Datcuk, Peter, Malinouskas, Donald, Nicholas, David
• Granted Patent: US 7,992,758 B2
• Time in Patent Office: Days
• 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 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/00734 battery operated
• 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 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2929 with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: A61B 2017/2943 Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments by marking A61B2090/395

Abstract

A surgical device is provided that includes a jaw portion, having a first jaw in opposed correspondence with a second jaw, the second jaw including a surgical member. The surgical device may include a shaft portion coupled to a proximal end of the jaw portion and at least one motor configured to rotate the jaw portion relative to the shaft portion, to move the jaw portion relative to the shaft portion, move the first jaw relative to the second jaw and move the surgical member within the second jaw. The surgical member may be prevented from moving within the second jaw unless the first jaw is in a closed position relative to the second jaw. Advantageously, the surgical member may be, e.g., a cutting element and/or a stapling element, disposed within one of the jaws.

Claims

1. A surgical device, comprising:

a shaft portion defining a longitudinal axis;

a jaw portion defining a longitudinal axis, the jaw portion having a proximal end coupled to a distal end of the shaft portion, the jaw portion having a first jaw in opposed correspondence with a second jaw, the second jaw including a surgical member;

a gear arrangement interposed between the jaw portion and the shaft portion, the gear arrangement being configured to operate such that;

the jaw portion is rotatable about the longitudinal axis thereof relative to the shaft portion;

the jaw portion is pivotable relative to the shaft portion about a pivot axis that is transversely oriented relative to the longitudinal axis thereof and relative to the longitudinal axis of the shaft portion;

the first jaw is moveable relative to the second jaw; and

the surgical member is moveable within the second jaw, wherein the surgical member is prevented from moving within the second jaw unless the first jaw is in a closed position relative to the second jaw, and wherein when the first jaw is in an open position relative to the second jaw, the jaw portion is rotatable relative to the shaft portion;

wherein the gear arrangement includes;

a coupler gear element rotatably disposed between the shaft portion and the jaw portion so as to rotate about the pivot axis;

a first gear train including;

a first gear element supported on a distal end of a longitudinally rotatable first shaft supported in the shaft portion;

the coupler gear meshingly engaged with the first gear element of the first gear train; and

a second gear element rotatably supported in the jaw portion and meshingly engaged with the coupler gear,

wherein rotation of the first shaft results in a pivoting of the jaw portion relative to the shaft portion about the pivot axis via the first gear train; and

a second gear train including;

a first gear element supported on a distal end of a longitudinally rotatable second shaft supported in the shaft portion;

the coupler gear meshingly engaged with the first gear element of the second gear train; and

a second gear element rotatably supported in the jaw portion and meshingly engaged with the coupler gear,

wherein rotation of the second shaft results in a rotation of the jaw portion about the longitudinal axis thereof via the second gear train.

2. The surgical device according to claim 1, wherein the gear arrangement includes an idler gear that is selectively engageable based upon a position of the first jaw relative to the second jaw, wherein the idler gear is moveable between a proximal position and a distal position.

3. The surgical device according to claim 2, further comprising:

a cam block moveable between a proximal position and a distal position, wherein the cam block includes a surface, wherein the cam block is moved between its proximal and distal positions by engagement of the surface thereof with a surface of one of the first and second jaws when the first and second jaws are moved relative to each other, and wherein the idler gear is moved between its proximal and distal positions by engagement of the cam block with the idler gear.

4. The surgical device according to claim 2, wherein, when the idler gear is in a distal position, the idler gear engages recesses of a housing.

5. The surgical device according to claim 4, wherein, when the idler gear engages the recesses of the housing, rotation of the idler gear by a drive element causes the jaw portion to rotate relative to the shaft portion.

6. The surgical device according to claim 5, wherein, when the idler gear is in a proximal position, the idler gear is out of engagement with the recesses of the housing, such that the idler gear is rotatable relative to the housing.

7. The surgical device according to claim 6, wherein, when the idler gear is out of engagement with the recesses of the housing, rotation of the idler gear by the drive element causes the surgical member to move within the second jaw.

8. The surgical device according to claim 7, wherein the surgical member includes at least one of a cutting element and a stapling element.

9. A surgical device, comprising:

a shaft portion defining a longitudinal axis;

a jaw portion defining a longitudinal axis, the jaw portion having a proximal end coupled to a distal end of the shaft portion, the jaw portion including;

a first jaw; and

a second jaw in opposed correspondence with the first jaw, the second jaw including a wedge member slidably supported therein, and a wedge driver rotatably supported therein and being threadably connected to the wedge member, wherein rotation of the wedge driver results in axial translation of the wedge member;

a gear arrangement interposed between the jaw portion and the shaft portion, the gear arrangement being configured to operate such that;

the jaw portion is rotatable about the longitudinal axis thereof relative to the shaft portion;

the jaw portion is pivotable relative to the shaft portion about a pivot axis that is transversely oriented relative to the longitudinal axis thereof and relative to the longitudinal axis of the shaft portion;

the first jaw is moveable relative to the second jaw; and

wherein the gear arrangement includes;

a coupler gear element rotatably disposed between the shaft portion and the jaw portion so as to rotate about the pivot axis;

a first gear train extending from the shaft portion to the jaw portion, wherein the first gear train includes the coupler gear, and wherein operation of the first gear train results in a pivoting of the jaw portion relative to the shaft portion about the pivot axis; and

a second gear train extending from the shaft portion to the jaw portion, wherein the second gear train includes the coupler gear, and wherein operation of the second gear train results in at least one of a rotation of the jaw portion about the longitudinal axis thereof, and a rotation of the wedge driver to axially translate the wedge member.

10. The surgical device according to claim 9, wherein the first gear train includes:

a first gear element supported on a distal end of a longitudinally rotatable first shaft supported in the shaft portion;

the coupler gear meshingly engaged with the first gear element of the first gear train; and

a second gear element rotatably supported in the jaw portion and meshingly engaged with the coupler gear,

wherein rotation of the first shaft results in a pivoting of the jaw portion relative to the shaft portion about the pivot axis via the first gear train.

11. The surgical device according to claim 10, wherein the second gear train includes:

a first gear element supported on a distal end of a longitudinally rotatable second shaft supported in the shaft portion;

the coupler gear meshingly engaged with the first gear element of the second gear train; and

a second gear element rotatably supported in the jaw portion and meshingly engaged with the coupler gear,

wherein rotation of the second shaft results in a rotation of the jaw portion about the longitudinal axis thereof via the second gear train.

12. The surgical device according to claim 9, wherein the wedge member is prevented from moving within the second jaw unless the first jaw is in a closed position relative to the second jaw.

13. The surgical device according to claim 9, wherein when the first jaw is in an open position relative to the second jaw, the jaw portion is rotatable relative to the shaft portion.

14. The surgical device according to claim 9, further comprising an idler gear that is selectively engageable based upon a position of the first jaw relative to the second jaw, wherein the idler gear is moveable between a proximal position and a distal position.

15. The surgical device according to claim 14, further comprising:

a cam block moveable between a proximal position and a distal position, wherein the cam block is moved between its proximal and distal positions by engagement of the surface thereof with a surface of one of the first and second jaws when the first and second jaws are moved relative to each other, and wherein the idler gear is moved between its proximal and distal positions by engagement of the cam block with the idler gear.

16. The surgical device according to claim 14, wherein, when the idler gear is in a distal position, the idler gear engages recesses of a housing.

17. The surgical device according to claim 16, wherein, when the idler gear engages the recesses of the housing, rotation of the idler gear by a drive element causes the jaw portion to rotate relative to the shaft portion.

18. The surgical device according to claim 17, wherein, when the idler gear is in a proximal position, the idler gear is out of engagement with the recesses of the housing, such that the idler gear is rotatable relative to the housing.

19. The surgical device according to claim 18, wherein, when the idler gear is out of engagement with the recesses of the housing, rotation of the idler gear by the drive element causes the surgical member to move within the second jaw.

20. The surgical device according to claim 19, wherein the surgical member includes at least one of a cutting element and a stapling element.