Redundant axis and degree of freedom for hardware-constrained remote center robotic manipulator
First Claim
1. A manipulator for articulating a surgical tool during surgery, the surgical tool including an elongate shaft, the shaft having a distal working end configured for insertion into a body cavity of a patient through a remote center of manipulation, the manipulator comprising:
- a mounting base configured to be supported in a fixed position and orientation relative to the patient;
a first link coupled with the mounting base to limit motion of the first link relative to the mounting base to rotation around a first axis intersecting the remote center of manipulation;
a second link coupled with the first link to limit motion of the second link relative to the first link to rotation around a second axis intersecting the remote center of manipulation, the second axis not being coincident with the first axis;
a third link coupled with the second link to limit motion of the third link relative to the second link to rotation around a third axis intersecting the remote center of manipulation; and
an instrument holder coupled with the third link and configured to couple with the surgical tool.
1 Assignment
0 Petitions
Accused Products
Abstract
A remote center manipulator for use in minimally invasive robotic surgery includes a base link held stationary relative to a patient, an instrument holder, and a linkage coupling the instrument holder to the base link. First and second links of the linkage are coupled to limit motion of the second link to rotation about a first axis intersecting a remote center of manipulation. A parallelogram linkage portion of the linkage pitches the instrument holder around a second axis that intersects the remote center of manipulation. The second axis is not coincident with the first axis. Third and fourth links of the linkage are coupled to limit motion of the fourth link to rotation about a third axis intersecting the remote center of manipulation. The third axis is not coincident with either of the first and second axes. Various combinations of hardware-constrained remote center of motion robotic manipulators with redundant mechanical degrees of freedom are disclosed.
39 Citations
22 Claims
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1. A manipulator for articulating a surgical tool during surgery, the surgical tool including an elongate shaft, the shaft having a distal working end configured for insertion into a body cavity of a patient through a remote center of manipulation, the manipulator comprising:
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a mounting base configured to be supported in a fixed position and orientation relative to the patient; a first link coupled with the mounting base to limit motion of the first link relative to the mounting base to rotation around a first axis intersecting the remote center of manipulation; a second link coupled with the first link to limit motion of the second link relative to the first link to rotation around a second axis intersecting the remote center of manipulation, the second axis not being coincident with the first axis; a third link coupled with the second link to limit motion of the third link relative to the second link to rotation around a third axis intersecting the remote center of manipulation; and an instrument holder coupled with the third link and configured to couple with the surgical tool. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A manipulator for articulating a surgical tool during surgery, the surgical tool including an elongate shaft, the shaft having a distal working end configured for insertion into a body cavity of a patient through a remote center of manipulation, the manipulator comprising:
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a mounting base configured to be supported in a fixed position and orientation relative to the patient; a first link coupled with the mounting base to limit motion of the first link relative to the mounting base to rotation around a first axis intersecting the remote center of manipulation; a second link coupled with the first link to limit motion of the second link relative to the first link to rotation around a second axis intersecting the remote center of manipulation, the second axis not being coincident with the first axis; and an instrument holder coupled with the second link to enable rotation of the instrument holder relative to the second link about a third axis intersecting the remote center of manipulation. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A surgical manipulator comprising:
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a mounting base, a first link, a second link, and a third link; a first joint coupled between the mounting base and the first link, wherein the first joint rotates around a first axis; a second joint coupled between the first link and the second link, wherein the second joint rotates around a second axis; a third joint coupled between the second link and the third link, wherein the third joint rotates around a third axis; and an instrument holder coupled to the third link, the instrument holder being configured to support a surgical tool comprising an elongate shaft, a center of motion being located on the shaft; wherein the first, second, and third axes are unique from each other and intersect at the center of motion. - View Dependent Claims (21, 22)
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Specification