Motor-driven surgical cutting and fastening instrument with tactile position feedback
First Claim
1. A surgical cutting and fastening instrument comprising:
- an end effector comprising;
an elongate channel;
a movable cutting instrument for cutting an object positioned in the end effector, anda clamping member pivotably connected to the elongate channel and wherein said surgical cutting and fastening instrument further comprises;
a main drive shaft assembly connected to the end effector;
a gear drive train connected to the main drive shaft assembly;
a main motor for actuating the gear drive train;
a firing trigger for actuating the main motor;
a tactile position feedback system for applying force to the firing trigger such that the position of the firing trigger is related to the position of the cutting instrument in the end effector;
a closure trigger separate from the firing trigger, wherein retraction of the closure trigger causes the end effector to clamp the object positioned in the end effector; and
a mechanical closure system for closing the end effector when the closure trigger is retracted, said mechanical closure system comprising;
a yoke connected to the closure trigger;
a closure bracket connected to the yoke; and
a closure tube disposed in the closure bracket and connected to the clamping member, wherein retraction of the closure trigger causes the closure tube to move longitudinally such that the clamping member pivots to a clamped position.
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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.
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Citations
14 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 movable cutting instrument for cutting an object positioned in the end effector, and a clamping member pivotably connected to the elongate channel and wherein said surgical cutting and fastening instrument further comprises; a main drive shaft assembly connected to the end effector; a gear drive train connected to the main drive shaft assembly; a main motor for actuating the gear drive train; a firing trigger for actuating the main motor; a tactile position feedback system for applying force to the firing trigger such that the position of the firing trigger is related to the position of the cutting instrument in the end effector; a closure trigger separate from the firing trigger, wherein retraction of the closure trigger causes the end effector to clamp the object positioned in the end effector; and a mechanical closure system for closing the end effector when the closure trigger is retracted, said mechanical closure system comprising; a yoke connected to the closure trigger; a closure bracket connected to the yoke; and a closure tube disposed in the closure bracket and connected to the clamping member, wherein retraction of the closure trigger causes the closure tube to move longitudinally such that the clamping member pivots to a clamped position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A surgical cutting and fastening instrument comprising:
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an end effector comprising a moveable cutting instrument for cutting an object positioned in the end effector; a main drive shaft assembly connected to the end effector; and a handle connected to the main drive shaft assembly, wherein the handle comprises; a gear drive train connected to the main drive shaft assembly; a main motor rotatable in firing direction to apply a firing motion to the gear drive train and a retraction direction to apply a retraction motion to the gear drive train; a firing trigger for actuating the main motor upon application of an actuation force thereto; and a run motor sensor communicating with said main motor and configured to sense actuation of the firing trigger such that when the firing trigger is actuated, the run motor sensor signals to the main motor to rotate in the firing direction at a firing rate proportional to the actuation force applied to the firing trigger and wherein; as the firing trigger is actuated by a user, the user experiences through the firing trigger a resistance related to a loading force experienced by the cutting instrument as it cuts through the object positioned in the end effector; and after the cutting instrument has cut through the object, the user experiences a retraction force through the firing trigger that is proportional to a retraction speed of the motor. - View Dependent Claims (14)
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Specification