Motor-driven surgical cutting and fastening instrument with mechanical closure system
First Claim
1. A surgical cutting and fastening instrument comprising:
- an end effector comprising;
an elongate channel;
a clamping member pivotably connected to the channel; and
a moveable cutting instrument for traversing the channel to cut an object clamped in the end effector by the clamping member when the clamping member is in a clamped position;
a main drive shaft assembly for actuating the cutting instrument in the end effector;
a gear drive train connected to the main drive shaft assembly;
a motor for actuating the gear drive train;
a closure trigger;
a mechanical closure system connected to the closure trigger and to the clamping member for causing the clamping member to pivot to the clamped position when the closure trigger is retracted; and
a firing trigger separate from the closure trigger for actuating the motor when the firing trigger is retracted to cause the cutting instrument to traverse the channel such that a loading force on the firing trigger when retracted is related to another loading force experienced by the cutting instrument as the cutting instrument cuts the object clamped in the end effector.
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Accused Products
Abstract
A surgical cutting and fastening instrument is disclosed. According to various embodiments, the instrument includes an end effector comprising an elongate channel, a clamping member pivotably connected to the channel, and a moveable cutting instrument for traversing the channel to cut an object clamped in the end effector by the clamping member when the clamping member is in a clamped position. The instrument may also comprise a main drive shaft assembly for actuating the cutting instrument in the end effector, a gear drive train connected to the main drive shaft assembly, and a motor for actuating the gear drive train. The instrument may also includes a closure trigger and a firing trigger, separate from the closure trigger, for actuating the motor when the firing trigger is retracted. Also, the instrument may comprise a mechanical closure system connected to the closure trigger and to the clamping member for causing the clamping member to pivot to the clamped position when the closure trigger is retracted.
3212 Citations
22 Claims
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1. A surgical cutting and fastening instrument comprising:
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an end effector comprising; an elongate channel; a clamping member pivotably connected to the channel; and a moveable cutting instrument for traversing the channel to cut an object clamped in the end effector by the clamping member when the clamping member is in a clamped position; a main drive shaft assembly for actuating the cutting instrument in the end effector; a gear drive train connected to the main drive shaft assembly; a motor for actuating the gear drive train; a closure trigger; a mechanical closure system connected to the closure trigger and to the clamping member for causing the clamping member to pivot to the clamped position when the closure trigger is retracted; and a firing trigger separate from the closure trigger for actuating the motor when the firing trigger is retracted to cause the cutting instrument to traverse the channel such that a loading force on the firing trigger when retracted is related to another loading force experienced by the cutting instrument as the cutting instrument cuts the object clamped in the end effector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A surgical cutting and fastening instrument comprising:
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an end effector comprising; an elongate channel; a clamping member pivotably connected to the channel; and a moveable cutting instrument for traversing the channel to cut an object clamped in the end effector by the clamping member when the clamping member is in a clamped position; a main drive shaft assembly for actuating the cutting instrument in the end effector; a handle comprising; a gear drive train connected to the main drive shaft assembly; a motor for actuating the gear drive train; a closure trigger; and a firing trigger separate from the closure trigger for actuating the motor when the firing trigger is retracted, wherein a loading force on the firing trigger when retracted is related to another loading force experienced by the cutting instrument; and a mechanical closure system connected to the closure trigger and to the clamping member for causing the clamping member to pivot to the clamped position when the closure trigger is retracted, wherein the mechanical closure system comprises; a bracket connected to the closure trigger; and a closure tube assembly having a distal end connected to the clamping member and a proximate end seated in the bracket. - View Dependent Claims (19, 20, 21)
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22. A surgical cutting and fastening instrument comprising:
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an end effector comprising; an elongate channel; a clamping member pivotably connected to the channel; and a moveable cutting instrument for traversing the channel to cut an object clamped in the end effector by the clamping member when the clamping member is in a clamped position; a main drive shaft assembly for actuating the cutting instrument in the end effector; a gear drive train connected to the main drive shaft assembly; a motor for actuating the gear drive train; a closure trigger; means for causing the clamping member to pivot to the clamped position when the closure trigger is retracted; and a firing trigger separate from the closure trigger for actuating the motor when the firing trigger is retracted, wherein the rotational position of the firing trigger is related to the position of the cutting instrument in the end effector.
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Specification