Motor driven surgical instruments with lockable dual drive shafts
First Claim
1. A surgical instrument, comprising:
- a motor including a motor output shaft;
a first rotary drive system;
a second rotary drive system;
a transmission assembly in operable engagement with the motor output shaft and being selectively shiftable between a first drive position wherein rotation of the motor output shaft is imparted to the first rotary drive system and a second drive position wherein rotation of the motor output shaft is imparted to the second rotary drive system; and
a locking assembly supported by the transmission assembly and configured to mechanically prevent actuation of the second rotary drive system when the transmission assembly is in the first drive position, said locking assembly further configured to prevent actuation of the first rotary drive system when the transmission assembly is in the second drive position.
4 Assignments
0 Petitions
Accused Products
Abstract
Motor driven surgical instruments that include a first rotary drive system and a second rotary drive system. Various forms include a transmission assembly that is selectively shiftable between a first drive position wherein rotary motion generated by the motor is transferred to the first rotary drive system and a second drive position wherein rotary motion generated by the motor is transferred to the second rotary drive system. Various forms further include a locking assembly configured to mechanically prevent rotation of the second rotary drive system when the transmission assembly is in the first drive position as well as to prevent rotation of the first rotary drive system when the transmission assembly is in the second drive position.
4888 Citations
18 Claims
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1. A surgical instrument, comprising:
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a motor including a motor output shaft; a first rotary drive system; a second rotary drive system; a transmission assembly in operable engagement with the motor output shaft and being selectively shiftable between a first drive position wherein rotation of the motor output shaft is imparted to the first rotary drive system and a second drive position wherein rotation of the motor output shaft is imparted to the second rotary drive system; and a locking assembly supported by the transmission assembly and configured to mechanically prevent actuation of the second rotary drive system when the transmission assembly is in the first drive position, said locking assembly further configured to prevent actuation of the first rotary drive system when the transmission assembly is in the second drive position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A surgical instrument, comprising:
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a motor including a motor output shaft; a first rotary drive system; a second rotary drive system; a transmission assembly in operable engagement with the motor output shaft and being selectively shiftable between a first rotary drive position wherein rotation of the motor output shaft is imparted to the first rotary drive system and a second rotary drive position wherein rotation of the motor output shaft is imparted to the second rotary drive system; and means for mechanically preventing rotation of the second rotary drive system when the transmission assembly is in the first rotary drive position, said means for mechanically preventing further configured to prevent rotation of the first rotary drive system when the transmission assembly is in the second rotary drive position.
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11. A surgical instrument, comprising:
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a housing; a motor supported by the housing and including a motor output shaft; a first rotary drive system operably supported by the housing; a second rotary drive system operably supported by the housing; a transmission assembly movably supported in the housing in operable engagement with the motor output shaft and being selectively shiftable between a first rotary drive position wherein rotation of the motor output shaft is imparted to the first rotary drive system and a second rotary drive position wherein rotation of the motor output shaft is imparted to the second rotary drive system wherein the first rotary drive system comprises; a first rotary drive shaft supported by the housing and including a first drive pulley non-rotatably coupled thereto and wherein the second rotary drive system comprises; a second rotary drive shaft supported by the housing and including a second drive pulley non-rotatably attached thereto and wherein the motor output shaft includes a first motor pulley non-rotatably attached thereto and a second motor pulley non-rotatably attached thereto and wherein the surgical instrument further comprises; a first drive belt in slack engagement with the first motor pulley and the first drive pulley; and a second drive belt in slack engagement with the second motor pulley and the second drive pulley and wherein the transmission assembly comprises; an idler carriage supporting a first idler pulley and a second idler pulley, the idler carriage being selectively laterally movable between the first rotary drive position wherein the first drive pulley engages the first drive belt to remove slack therefrom such that rotation of the first motor pulley results in the rotation of the first drive pulley and the first rotary drive shaft, and the second rotary drive position wherein the second drive pulley engages the second drive belt to remove slack therefrom such that rotation of the second motor pulley results in rotation of the second drive pulley and the second rotary drive shaft. - View Dependent Claims (12)
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13. A surgical instrument, comprising:
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a housing; a motor supported by the housing and including a motor output shaft; a first rotary drive system operably supported by the housing; a second rotary drive system operably supported by the housing; a transmission assembly movably supported in the housing in operable engagement with the motor output shaft and being selectively shiftable between a first rotary drive position wherein rotation of the motor output shaft is imparted to the first rotary drive system and a second rotary drive position wherein rotation of the motor output shaft is imparted to the second rotary drive system wherein the first rotary drive system comprises a first rotary drive shaft supported by the housing and includes a first drive pulley non-rotatably coupled thereto and wherein the second rotary drive system comprises a second rotary drive shaft supported by the housing and includes a second drive pulley non-rotatably attached thereto and wherein the transmission assembly further comprises a transmission shaft assembly movably supported on the motor output shaft for axial travel thereon and rotation therewith, the transmission shaft assembly configured for selective meshing engagement with first and second motor pulleys rotatably supported thereon such that when the transmission shaft assembly is in the first rotary drive position, the first motor pulley rotates with the transmission shaft assembly and the second motor pulley is freewheeling thereon and when the transmission shaft assembly is in the second rotary drive position, the second motor pulley rotates with the transmission shaft assembly and the first motor pulley is freewheeling thereon and wherein the transmission assembly further comprises; a first drive belt in driving engagement with the first drive pulley and the first motor pulley; and a second drive belt in driving engagement with the second drive pulley and the second motor pulley. - View Dependent Claims (14, 15)
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16. A surgical instrument, comprising:
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a motor including a motor output; a first drive system; a second drive system; a transmission assembly in operable engagement with the motor output and being selectively shiftable between a first drive position wherein the motor output is imparted to the first drive system and a second drive position wherein the motor output is imparted to the second drive system; and a locking assembly configured to prevent actuation of the second drive system when the transmission assembly is in the first drive position, said locking assembly further configured to prevent actuation of the first drive system when the transmission assembly is in the second drive position.
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17. A surgical instrument, comprising:
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a motor including a motor output; a first drive system comprising a first drive gear; a second drive system comprising a second drive gear and an intermediate drive gear wherein the intermediate drive gear is in meshing engagement with the first drive gear; a transmission assembly in operable engagement with the motor output and being selectively shiftable between a first drive position wherein the motor output is imparted to the first drive system and a second drive position wherein the motor output is imparted to the second drive system; and a locking assembly, comprising; a first drive lock positioned to engage the second drive gear when the transmission assembly is in the first drive position to resist rotation of the second drive gear; and a second drive lock positioned to engage the intermediate drive gear when the transmission assembly is in the second drive position to resist rotation of the intermediate drive gear.
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18. A surgical instrument, comprising:
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a motor including a motor output; a first drive system; a second drive system; a transmission assembly in operable engagement with the motor output and being selectively shiftable between a first drive position wherein the motor output is imparted to the first drive system and a second drive position wherein the motor output is imparted to the second drive system; and a locking assembly configured to stop the second drive system when the transmission assembly is in the first drive position, said locking assembly further configured to stop the first drive system when the transmission assembly is in the second drive position.
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Specification