[미국특허]
Surgical instrument with contained dual helix actuator assembly
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-018/14
A61B-017/072
A61B-017/00
A61B-017/29
A61B-018/00
출원번호
US-0335762
(2016-10-27)
등록번호
US-10188453
(2019-01-29)
발명자
/ 주소
Worrell, Barry C.
Lesko, Jason R.
출원인 / 주소
Ethicon LLC
대리인 / 주소
Frost Brown Todd LLC
인용정보
피인용 횟수 :
0인용 특허 :
175
초록▼
An apparatus comprises an end effector, an elongate shaft, and a handle assembly. The shaft includes an articulation section that is operable to deflect the end effector away from the longitudinal axis of the shaft. The handle assembly includes a rotary member positioned within an intermediate secti
An apparatus comprises an end effector, an elongate shaft, and a handle assembly. The shaft includes an articulation section that is operable to deflect the end effector away from the longitudinal axis of the shaft. The handle assembly includes a rotary member positioned within an intermediate section of the handle assembly. The rotary member is rotatable about an axis that is parallel to the longitudinal axis of the shaft. The rotary member is operable to control the articulation section of the shaft. The rotary member may include opposing thread sections that simultaneously drive lead screws in opposite longitudinal directions, to thereby control the articulation section. The shaft may be rotatable relative to the handle assembly, and the apparatus may selectively lock or resist such rotation based on the articulation state of the articulation section.
대표청구항▼
1. A surgical instrument, comprising: (a) a handle assembly including a rotary member rotatably extending along an axis of rotation;(b) an end effector;(c) a shaft assembly defining a longitudinal axis, wherein the longitudinal axis is parallel to the axis of rotation of the rotary member, wherein t
1. A surgical instrument, comprising: (a) a handle assembly including a rotary member rotatably extending along an axis of rotation;(b) an end effector;(c) a shaft assembly defining a longitudinal axis, wherein the longitudinal axis is parallel to the axis of rotation of the rotary member, wherein the shaft assembly includes: (i) a distal end portion, wherein the end effector is positioned at the distal end portion of the shaft assembly,(ii) a proximal end portion associated with the handle assembly,(iii) an articulation section positioned between the distal and proximal end portions and configured to articulate the distal end portion relative to the proximal end portion to deflect at least part of the end effector positioned at the distal end portion away from the longitudinal axis,(iv) a first lead member operatively connected between the rotary member and the articulation section and configured to translate longitudinally a first longitudinal direction, and(v) a second lead member operatively connected between the rotary member and the articulation section and configured to translate longitudinally a second longitudinal direction, wherein the second longitudinal direction is simultaneous and opposite the first longitudinal direction,wherein the rotary member is configured to be selectively rotated about the axis of rotation to direct the first and second lead members in the first and second longitudinal direction and thereby articulate the articulation section for deflecting the end effector. 2. The surgical instrument of claim 1, wherein the first and second lead members are slidably secured relative to handle assembly such that the first and second lead members are also prevented from rotating relative to the handle assembly. 3. The surgical instrument of claim 2, wherein the shaft assembly further includes at least one pin secured relative to the handle assembly, wherein the at least one pin slidably receives the first and second lead members thereon such that the at least one pin is configured to prevent the first and second lead members from rotating relative to the handle assembly. 4. The surgical instrument of claim 3, wherein the shaft assembly further includes a first articulation band operatively connected to the first lead member and a second articulation band operatively connected to the second lead member, wherein the first and second articulation bands extend along the shaft assembly through the articulation section, wherein the first and second lead members are configured to translate the first and second articulation bands respectively in the simultaneous and opposite first and second longitudinal directions and thereby articulate the articulation section. 5. The surgical instrument of claim 2, wherein the first and second lead members respectively having a first exterior threading and a second exterior threading, wherein the rotary member has a first interior threading and a second interior threading, and wherein the first and second lead members are received within the rotary member such that the first and second exterior threadings of the first and second lead members are threadably engaged with the first and second interior threadings of the rotary member. 6. The surgical instrument of claim 5, wherein the first lead member comprises a first lead screw, and wherein the second lead member comprises a second lead screw. 7. The surgical instrument of claim 1, wherein the handle assembly further includes a first containment ring, wherein the rotary member comprises a first rotary member part and a second rotary member part, wherein the first containment ring is secured with the first and second rotary member parts, wherein the first containment ring is configured to prevent the first and second rotary member parts from separating from each other for directing translation of the first and second lead members. 8. The surgical instrument of claim 7, wherein the first containment ring is positioned coaxially along the axis of rotation of the rotary member. 9. The surgical instrument of claim 8, wherein the rotary member has a first rotary end, and wherein the first containment ring is secured to the first rotary end of the rotary member. 10. The surgical instrument of claim 9, wherein the handle assembly further includes a second containment ring secured with the first and second rotary member parts, wherein the second containment ring is configured to prevent the first and second rotary member parts from separating from each other for directing translation of the first and second lead members, wherein the second containment ring is positioned coaxially along the axis of rotation of the rotary member, wherein the rotary member has a second rotary end positioned longitudinally opposite from the first rotary end, and wherein the second containment ring is secured to the second rotary end of the rotary member. 11. The surgical instrument of claim 1, wherein the handle assembly further comprises a housing and a first detent feature, wherein the rotary member has a second detent feature, and wherein the first detent feature of the housing is configured to engage the second detent feature of the rotary member in response to the articulation section arriving at a substantially straight configuration for providing at least one of an audible feedback or a tactical feedback that the articulation section has arrived at the substantially straight configuration. 12. The surgical instrument of claim 11, wherein the first detent feature comprises a resilient detent arm extending from the housing toward the rotary member for engagement with the second detent feature of the rotary member. 13. The surgical instrument of claim 12, wherein the second detent feature comprises a detent recess within the rotary member. 14. The surgical instrument of claim 1, wherein the shaft assembly further includes an elongate shaft, and wherein at least one of the elongate shaft or the end effector are rotatable relative to the handle assembly. 15. The surgical instrument of claim 14, further comprising a rotation locking feature, wherein the rotation locking feature is configured to selectively permit or prevent rotation of the elongate shaft or end effector relative to the handle assembly. 16. The surgical instrument of claim 15, wherein the rotation locking feature is configured to automatically prevent rotation of the at least one of the elongate shaft or the end effector relative to the handle assembly when the articulation section is articulated from a substantially straight configuration. 17. A surgical instrument, comprising: (a) a handle assembly, including: (i) a rotary member rotatably extending along an axis of rotation, wherein the rotary member comprises a first rotary member part and a second rotary member part, and(ii) a first containment ring secured with the first and second rotary member parts, wherein the first containment ring is configured to prevent the first and second rotary member parts from separating from each other;(b) an end effector;(c) a shaft assembly defining a longitudinal axis, wherein the longitudinal axis is parallel to the axis of rotation of the rotary member, wherein the shaft assembly includes: (i) a distal end portion, wherein the end effector is positioned at the distal end portion of the shaft assembly,(ii) a proximal end portion associated with the handle assembly, and(iii) an articulation section positioned between the distal and proximal end portions and configured to articulate the distal end portion relative to the proximal end portion to deflect at least part of the end effector positioned at the distal end portion away from the longitudinal axis,wherein the rotary member is configured to be selectively rotated about the axis of rotation to thereby articulate the articulation section for deflecting the end effector. 18. The surgical instrument of claim 17, wherein the first containment ring is positioned coaxially along the axis of rotation of the rotary member. 19. The surgical instrument of claim 18, wherein the rotary member has a first rotary end, and wherein the first containment ring is secured to the first rotary end of the rotary member. 20. A surgical instrument, comprising: (a) a handle assembly, including: (i) a rotary member rotatably extending along an axis of rotation, wherein the rotary member comprises a first rotary member part and a second rotary member part, and(ii) a first containment ring secured with the first and second rotary member parts, wherein the first containment ring is configured to prevent the first and second rotary member parts from separating from each other;(b) an end effector;(c) a shaft assembly defining a longitudinal axis, wherein the longitudinal axis is parallel to the axis of rotation of the rotary member, wherein the shaft assembly includes: (i) a distal end portion, wherein the end effector is positioned at the distal end portion of the shaft assembly,(ii) a proximal end portion associated with the handle assembly, and(iii) an articulation section positioned between the distal and proximal end portions and configured to articulate the distal end portion relative to the proximal end portion to deflect at least part of the end effector positioned at the distal end portion away from the longitudinal axis, wherein the rotary member is configured to be selectively rotated about the axis of rotation to thereby articulate the articulation section for deflecting the end effector, and(iii) an elongate shaft extending from the proximal end portion to the distal end portion, wherein at least one of the elongate shaft or the end effector are rotatable relative to the handle assembly; and(d) a rotation locking feature, wherein the rotation locking feature is configured to selectively permit or prevent rotation of the at least one of the elongate shaft or the end effector relative to the handle assembly, wherein the rotation locking feature is configured to automatically prevent rotation of the elongate shaft or end effector relative to the handle assembly when the articulation section is articulated from a substantially straight configuration.
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