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US 2014/0276719 A1Published application
Electrosurgical device with drum-driven articulation
AssigneeEthicon Endo-Surgery, Inc.
InventorShailendra K. Parihar
Life of this patent
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Abstract
A surgical device for operating on tissue comprises an end effector, a shaft, and an interface assembly. The shaft comprises an articulation section operable to provide deflection of the end effector relative to the longitudinal axis of the shaft. The interface assembly comprises a plurality of pulleys associated with drive shafts driven by an external system. The pulleys are operable to cause rotation of one or both of the shaft or end effector. The pulleys are further operable to cause articulation of the articulation section. The interface assembly further comprises drive components operable to cause movement of components of the end effector.
Claims20
An apparatus for operating on tissue, the apparatus comprising:
- (a) an end effector;
- (b) an elongate shaft, wherein the elongate shaft defines a longitudinal axis, wherein the elongate shaft comprises:
- (i) a distal end, wherein the end effector is positioned at the distal end of the elongate shaft,
- (ii) a proximal end,
- (iii) an articulation section, wherein the articulation section is operable to deflect at least part of the end effector away from the longitudinal axis, and
- (iv) a first pulley, wherein the first pulley is rotatable about the longitudinal axis of the elongate shaft;
- and
- (c) an interface assembly associated with the proximal end of the elongate shaft, wherein the interface assembly comprises:
- (i) a plurality of drive discs, wherein each of the drive discs of the plurality of drive discs is associated with a respective drive shaft,
- (ii) a second pulley, wherein the second pulley is fixedly secured to a first drive shaft, and
- (iii) a cable coupling the first pulley with the second pulley such that the first pulley and the second pulley are operable to drive articulation of the elongate shaft or rotation of one or both of the elongate shaft or the end effector about the longitudinal axis of the elongate shaft.
8 more elements
An apparatus for operating on tissue, the apparatus comprising:
- (a) an end effector;
- (b) an elongate shaft, wherein the elongate shaft defines a longitudinal axis, wherein the elongate shaft comprises:
- (i) a distal end, wherein the end effector is positioned at the distal end of the elongate shaft,
- (ii) a proximal end, and
- (iii) a first pulley, wherein the first pulley is fixedly secured to the elongate shaft;
- and
- (c) an interface assembly associated with the proximal end of the elongate shaft, wherein the interface assembly comprises:
- (i) a plurality of drive discs, wherein each of the drive discs of the plurality of drive discs is associated with a respective drive shaft,
- (ii) a second pulley, wherein the second pulley is fixedly secured to a first drive shaft,
- (iii) a third pulley, wherein the third pulley is associated with a second drive shaft, and wherein the first pulley, the second pulley, and the third pulley are operable to drive rotation of one or both of the elongate shaft or the end effector about the longitudinal axis of the elongate shaft.
7 more elements
An apparatus for operating on tissue, the apparatus comprising:
- (a) an end effector;
- (b) an elongate shaft, wherein the elongate shaft defines a longitudinal axis, wherein the elongate shaft comprises:
- (i) a distal end, wherein the end effector is positioned at the distal end of the elongate shaft,
- (ii) a proximal end, and
- (iii) an articulation section, wherein the articulation section is operable to deflect at least part of the end effector away from the longitudinal axis;
- (c) an interface assembly associated with the proximal end of the elongate shaft, wherein the interface assembly comprises:
- (i) a plurality of drive discs, wherein each of the drive discs of the plurality of drive discs is associated with a respective drive shaft,
- (ii) a first pulley, wherein the first pulley is fixedly secured to a first drive shaft,
- (iii) a second pulley, wherein the second pulley is associated with a second drive shaft,
- (iv) a third pulley,
- (v) a housing, wherein the housing comprises a first internal thread region, a second internal thread region, and an intermediate region, wherein the first internal thread region and the second internal thread region comprise threads having different thread directions, wherein the intermediate region separates the first internal thread region from the second internal thread region, and wherein the third pulley is rotably disposed within the intermediate region of the housing;
- (vi) a first threaded member, wherein the first threaded member is configured to matingly thread into the first internal thread region of the housing;
- and
- (vii) a second threaded member, wherein the second threaded member is configured to matingly thread into the second internal thread region of the housing, wherein the first threaded member and the second threaded member are configured to rotate together with the third pulley, and wherein the first threaded member and the second threaded member are operable to drive articulation of the end effector.
11 more elements
Dependencies are inferred from the claim text.