Multi-function motor for a surgical instrument
First Claim
1. A surgical stapler, comprising:
- a handle;
a firing member; and
an electric motor, wherein said electric motor advances said firing member to perform a staple firing stroke during a first operating state, retracts said firing member during a second operating state, and transmits haptic feedback to said handle during a third operating state without performing said staple firing stroke, wherein said electric motor directly transmits haptic feedback to said handle during said third operating state, and wherein said electric motor comprises;
a shaft directly coupled to said firing member; and
a resonator mounted on said shaft, wherein said resonator comprises;
a body comprising a mounting hole, wherein said mounting hole and said shaft are coaxial with a central axis of said resonator, and wherein the center of mass of said resonator is positioned along the central axis;
a spring extending from said body;
a weight extending from said spring; and
a counterweight extending from said body.
4 Assignments
0 Petitions
Accused Products
Abstract
A multi-function motor. The multi-function motor can operate in different operating states to perform different functions. For example, the motor can advance a firing element during a first operating state, retract the firing element during a second operating state, and generate amplified haptic feedback during a third operating state. The electric motor can rotate in a first direction to advance the firing element, can rotate in a second direction to retract the firing element, and can oscillate between the first direction and the second direction to generate the amplified haptic feedback. A resonator can be secured to the motor. The center of mass of the resonator can be balanced with respect to the axis of rotation of the resonator. Further, the resonator can comprise a natural frequency, and can oscillate within a range of amplifying frequencies inclusive of the natural frequency during the third operating state.
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Citations
32 Claims
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1. A surgical stapler, comprising:
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a handle; a firing member; and an electric motor, wherein said electric motor advances said firing member to perform a staple firing stroke during a first operating state, retracts said firing member during a second operating state, and transmits haptic feedback to said handle during a third operating state without performing said staple firing stroke, wherein said electric motor directly transmits haptic feedback to said handle during said third operating state, and wherein said electric motor comprises; a shaft directly coupled to said firing member; and a resonator mounted on said shaft, wherein said resonator comprises; a body comprising a mounting hole, wherein said mounting hole and said shaft are coaxial with a central axis of said resonator, and wherein the center of mass of said resonator is positioned along the central axis; a spring extending from said body; a weight extending from said spring; and a counterweight extending from said body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A surgical instrument for cutting and stapling tissue, the surgical instrument comprising:
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a handle; a firing member configured to perform a staple firing stroke; an electric motor positioned in said handle, wherein said electric motor is configured to operate in a plurality of states, and wherein said electric motor comprises a motor shaft configured to drive said firing member; and an amplifier comprising a center of mass, wherein said amplifier is mounted to said motor shaft at said center of mass, wherein said amplifier rotates in a first direction when said electric motor is in a firing state to induce a staple firing stroke, and wherein said amplifier oscillates between the first direction and a second direction when said electric motor is in a feedback state, wherein said staple firing stroke does not occur during said feedback state, and wherein said electric motor directly transmits feedback to said handle during said feedback state. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A surgical instrument for cutting and stapling tissue, the surgical instrument comprising:
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holding means for holding the surgical instrument; a firing member; motor means for operating in a plurality of operating states, wherein the plurality of operating states comprises a firing state and a feedback state, wherein a staple firing stroke of said firing member occurs during said firing state, wherein said staple firing stroke does not occur during said feedback state, and wherein said motor means rotates in a first direction during the firing state and oscillates between the first direction and a second direction during the feedback state; and feedback generating means for generating haptic feedback, wherein said feedback generating means is mounted to said motor means, wherein said motor means directly transmits feedback to said holding means during said feedback state. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A surgical instrument for cutting and stapling tissue, the surgical instrument comprising:
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a handle; a firing member extending from said handle; an electric motor positioned in said handle, wherein said electric motor is configured to operate in a plurality of states, and wherein said electric motor comprises a motor shaft operably coupleable with said firing member; and a resonator comprising a center of mass, wherein said resonator is mounted to said motor shaft at said center of mass, wherein said resonator is balanced when said electric motor is in an advancing state, wherein a staple firing stroke occurs during said advancing state, wherein said resonator is unbalanced when said electric motor is in a feedback state, wherein said electric motor directly transmits feedback to said handle during said feedback state by way of said motor shaft, and wherein said staple firing stroke does not occur during said feedback state. - View Dependent Claims (28, 29, 30, 31)
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32. A surgical stapler, comprising:
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a handle; an end effector; a displaceable member movable relative to said end effector; and an electric motor, wherein said electric motor advances said displaceable member to provide a staple firing stroke during a first operating state, retracts said displaceable member during a second operating state, and transmits feedback to said handle during a third operating state, wherein said staple firing stroke does not occur during said third operating state, wherein said electric motor directly transmits feedback to said handle during said third operating state, and wherein said electric motor comprises; a shaft; and a resonator mounted on said shaft, wherein said resonator comprises; a body comprising a mounting hole, wherein said mounting hole and said shaft are coaxial with a central axis of said resonator, and wherein the center of mass of said resonator is positioned along the central axis; a spring extending from said body; a weight extending from said spring; and a counterweight extending from said body.
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Specification