[미국특허]
Articulation control for surgical instruments
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-017/04
A61B-017/00
A61B-017/06
출원번호
US-0298028
(2014-06-06)
등록번호
US-9526495
(2016-12-27)
발명자
/ 주소
Martin, David T.
Brickner, Aaron J.
Mumaw, Daniel J.
Geiger, Daniel L.
출원인 / 주소
Ethicon Endo-Surgery, LLC
인용정보
피인용 횟수 :
38인용 특허 :
224
초록▼
A surgical instrument comprises an elongate shaft having a proximal end, a distal end, and an articulating portion. An end effector is on the distal end and an actuator is on the proximal end. A rod is in the shaft having a proximal end with a cam follower, a distal end operably connected to the art
A surgical instrument comprises an elongate shaft having a proximal end, a distal end, and an articulating portion. An end effector is on the distal end and an actuator is on the proximal end. A rod is in the shaft having a proximal end with a cam follower, a distal end operably connected to the articulation portion, and a longitudinal axis extending between the proximal and distal ends. A disk is in the actuator rotatable in response to user input in a plane substantially parallel to the longitudinal axis of the rod. The disk has a cam slot receiving the cam follower such that rotation of the disk moves the rod longitudinally to articulate the elongate shaft at the articulation portion.
대표청구항▼
1. A surgical instrument, comprising: an elongate shaft comprising a proximal end, a distal end, and an articulating portion;a circular needle applier on the distal end and an actuator on the proximal end;a first rod in the shaft, the first rod comprising a proximal end comprising a first cam follow
1. A surgical instrument, comprising: an elongate shaft comprising a proximal end, a distal end, and an articulating portion;a circular needle applier on the distal end and an actuator on the proximal end;a first rod in the shaft, the first rod comprising a proximal end comprising a first cam follower, a distal end operably connected to the articulation portion, and a longitudinal axis extending between the proximal and distal ends; a second rod in the shaft, the second rod comprising a proximal end comprising a second cam follower, a distal end operably connected to the articulation portion, and a longitudinal axis extending between the proximal and distal ends; anda disk in the actuator, the disk being rotatable in response to user input in a plane substantially parallel to the longitudinal axis of each rod, the disk comprising first and second elongate curved cam slots receiving the respective first and second cam followers such that rotation of the disk moves the rods longitudinally to articulate the elongate shaft at the articulation portion, wherein the cam slots each comprise a tangent axis at the location where each cam slot is engaged by the respective cam follower, the tangent axis being substantially normal to the longitudinal axis of the rod thereby preventing unintentional articulation of the articulation portion. 2. The surgical instrument of claim 1, wherein each cam follower is oriented substantially normal to each rod receptively and normal to the disk. 3. The surgical instrument of claim 1, wherein cam slots each comprises a length having angular and radial components relative to the disk. 4. The surgical instrument of claim 3, wherein the tangent axis is substantially normal to the longitudinal axis of each rod respectively throughout the length of the cam slots. 5. The surgical instrument of claim 1, wherein cam followers are offset from the longitudinal axis of each rod respectively. 6. The surgical instrument of claim 1, wherein cam followers are medial to the longitudinal axis of each rod respectively. 7. The surgical instrument of claim 1, wherein the articulating portion comprises an articulation joint. 8. The surgical instrument of claim 1, further comprising a rotary input knob connected to the disk. 9. The surgical instrument of claim 1, further comprising at least one detent on cam slots. 10. The surgical instrument of claim 9, wherein the cam followers each include a cylindrical portion that closely fits in the respective cam slots and a radius portion dimensioned to be received by the at least one detent, wherein as the disk rotates the radius portion raises and lowers into the at least one detent and the cylindrical portion follows and remains engaged in the cam slot. 11. A suturing device, comprising: an elongate shaft comprising a proximal end, a distal end, and an articulation joint;a circular needle applier on the distal end of the elongate shaft;an actuator on the proximal end of the elongate shaft;first and second rods in the elongate shaft, each rod comprising a proximal end comprising a cam follower, a distal end operably connected to the articulation joint, and a longitudinal axis extending between the proximal and distal ends; anda disk in the actuator, the disk being rotatable in response to user input in a plane substantially parallel to the longitudinal axes of the elongate shafts, the disk comprising first and second helical cam slots receiving the first and cam followers, respectively;wherein the first and second cam slots each comprise a tangent axis at the location where the cam slot is engaged by the respective first and second cam followers, the cam slots being configured to self-lock the articulation joint at least in part by virtue of the tangent axes each being substantially perpendicular to the longitudinal axes of the first and second rods;whereby clockwise rotation of the disk moves the first rod distally and the second rod proximally to articulate the joint in a first direction, and counterclockwise rotation of the disk moves the first rod proximally and the second rod distally to articulate the joint in a second direction. 12. The suturing device of claim 11, wherein cam followers are medial to the longitudinal axis of the respective rod. 13. The suturing device of claim 11, wherein the actuator comprises a handle. 14. The suturing device of claim 11, wherein the cam slots further comprise a plurality of detents configured to self-lock the articulation joint.
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