Loading unit velocity and position feedback
First Claim
1. A loading unit for a surgical stapling device, comprising:
- a cartridge assembly including;
a channel;
an axial drive assembly having a clamping member, the clamping member having a flange configured to engage the channel; and
at least one mechanical feature defined in the channel for indicating an end of stroke upon engagement by the axial drive assembly, the at least one mechanical feature selected from the group consisting of a bump, a depression, a recess, and combinations thereof;
a motor configured to move the axial drive assembly; and
a controller coupled to the motor and configured to determine the end of stroke based on a change in torque of the motor in response to the clamping member engaging the at least one mechanical feature.
1 Assignment
0 Petitions
Accused Products
Abstract
A loading unit for a surgical stapling device has a cartridge assembly and an anvil assembly, the cartridge assembly including a channel and a staple cartridge having a plurality of surgical staples therein. An axial drive assembly has a clamping member, the clamping member having an upper flange for engaging the anvil assembly, and a lower flange for engaging the channel. The axial drive assembly is movable through the staple cartridge to drive the staples out of the staple cartridge and against the anvil assembly. Mechanical features are defined in the channel for indicating an end of stroke for the axial drive assembly, the mechanical features having a first pattern and a second pattern.
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Citations
18 Claims
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1. A loading unit for a surgical stapling device, comprising:
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a cartridge assembly including; a channel; an axial drive assembly having a clamping member, the clamping member having a flange configured to engage the channel; and at least one mechanical feature defined in the channel for indicating an end of stroke upon engagement by the axial drive assembly, the at least one mechanical feature selected from the group consisting of a bump, a depression, a recess, and combinations thereof; a motor configured to move the axial drive assembly; and a controller coupled to the motor and configured to determine the end of stroke based on a change in torque of the motor in response to the clamping member engaging the at least one mechanical feature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A loading unit for a surgical stapling device, comprising:
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a cartridge assembly including; a channel; an axial drive assembly having a clamping member, the clamping member having a flange configured to engage the channel; and at least one mechanical feature defined in the channel for indicating an end of stroke upon engagement by the axial drive assembly; a motor configured to move the axial drive assembly; and a controller coupled to the motor and configured to determine the end of stroke based on a change in torque of the motor in response to the clamping member engaging the at least one mechanical feature. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification