Surgical robotic systems including surgical assemblies having a supercapacitor
AssigneeCovidien LP
InventorsRanjan K. Mishra, Michael Zemlok
Life of this patent
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Abstract
A surgical assembly for use with a robotic arm includes an outer housing configured to be selectively coupled to a robotic arm, a power pack disposed within the outer housing, and an electric motor operably coupled to the power pack. The outer housing has a supercapacitor attached to an inner surface of the outer housing. The power pack is configured to non-rotatably couple to a surgical instrument such that the surgical instrument and power pack are configured to rotate together. The supercapacitor is in electric communication with the electric motor and configured to supply a direct current to the electric motor to generate a braking torque during a power loss.
Claims8
A surgical assembly for use with a robotic arm, the surgical assembly comprising:
- an outer housing configured to be selectively coupled to a robotic arm, the outer housing having a supercapacitor attached to an inner surface of the outer housing, wherein the supercapacitor is a thin-film graphene supercapacitor coated on the inner surface of the outer housing, wherein the outer housing further includes a faraday cage attached to the inner surface of the outer housing, and wherein the supercapacitor is deposited over the faraday cage;
- a power pack disposed within the outer housing and rotatable relative to the outer housing, the power pack configured to non-rotatably couple to a surgical instrument such that the surgical instrument and power pack are configured to rotate together, wherein the power pack drives functionality of the surgical instrument, and wherein the super capacitor is disposed between the outer housing and the power pack;
- and
- an electric motor disposed within the housing and operably coupled to the power pack and configured to affect the rotation of the power pack relative to the outer housing, wherein the supercapacitor is in electric communication with the electric motor and configured to supply a direct current to the electric motor to generate a braking torque.
An instrument drive unit for use with a robotic arm, the instrument drive unit comprising:
- a housing having a supercapacitor attached to a surface of the housing, wherein the supercapacitor is a thin-film graphene supercapacitor coated on an inner surface of the housing, wherein the housing further includes a faraday cage attached to the inner surface of the housing, and wherein the supercapacitor is deposited over the faraday cage;
- a power pack disposed within the housing and rotatable relative to the housing, the power pack configured to non-rotatably couple to a surgical instrument such that the surgical instrument and power pack are configured to rotate together, wherein the power pack drives functionality of the surgical instrument, and wherein the super capacitor is disposed between the housing and the power pack;
- and
- an electric motor disposed within the housing and operably coupled to the power pack, the electric motor configured to rotate the power pack relative to the housing, wherein the supercapacitor is in electric communication with the electric motor and configured to supply a direct current to the electric motor to generate a braking torque,
- wherein, when the braking torque is generated, rotation of the power pack is prevented.
Dependencies are inferred from the claim text.