Pneumatically powered surgical cutting and fastening instrument with manually operated retraction apparatus
First Claim
1. A surgical instrument for use in connection with a pneumatically powered tool having a firing mechanism operably supported therein that is movable between an unactuated position and an actuated position, said surgical instrument comprising:
- a drive system operably communicating with the pneumatically powered tool and being configured to selectively apply at least a drive system generated firing motion to the firing mechanism of the pneumatically powered tool to cause the firing mechanism to move from the unactuated position to the actuated position in response to a flow of gas from a source of gas fluidically coupled to said drive system; and
a retraction member communicating with said drive system to enable a manually generated retraction motion to be applied thereto to manually move the firing mechanism in a proximal direction from the actuated position to the unactuated position.
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Accused Products
Abstract
A surgical instrument for use in connection with a pneumatically powered tool having a firing mechanism operably supported therein that is movable between an unactuated position and an actuated position. In various embodiments, a drive system operably communicates with the pneumatically powered tool and is configured to selectively apply at least a drive system generated firing motion to the firing mechanism of the pneumatically powered tool to cause the firing mechanism to move from the unactuated position to the actuated position in response to a flow of gas from a source of gas fluidically coupled to said drive system. A retraction member communicates with the drive system to enable a manually generated retraction motion to be applied thereto to manually move the firing mechanism in a distal direction from the actuated position to the unactuated position.
2354 Citations
19 Claims
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1. A surgical instrument for use in connection with a pneumatically powered tool having a firing mechanism operably supported therein that is movable between an unactuated position and an actuated position, said surgical instrument comprising:
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a drive system operably communicating with the pneumatically powered tool and being configured to selectively apply at least a drive system generated firing motion to the firing mechanism of the pneumatically powered tool to cause the firing mechanism to move from the unactuated position to the actuated position in response to a flow of gas from a source of gas fluidically coupled to said drive system; and a retraction member communicating with said drive system to enable a manually generated retraction motion to be applied thereto to manually move the firing mechanism in a proximal direction from the actuated position to the unactuated position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A surgical instrument for use in connection with a pneumatically powered tool having a firing mechanism operably supported therein that is movable between an unactuated position and an actuated position, said surgical instrument comprising:
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drive means for selectively applying at least a drive system generated firing motion to the firing mechanism of the pneumatically powered tool to cause the firing mechanism to move from the unactuated position to the actuated position in response to a flow of gas from a source of gas fluidically coupled to said drive means; and retraction means communicating with said drive means for selectively applying a manual retraction motion to said drive means to move the firing mechanism in a proximal direction from the actuated position to the unactuated position. - View Dependent Claims (12)
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13. A surgical instrument comprising:
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a handle assembly; a closure drive supported by said handle assembly and configured to generate a closing motion and an opening motion; a pneumatically powered drive system supported by said handle assembly and being configured to selectively generate a firing motion and a retraction motion; an elongate shaft assembly coupled to said handle assembly and communicating with said closure drive to transfer said opening and closing motions and further communicating with said pneumatically powered drive system to transfer said firing and retraction motions; an end effector coupled to said elongate shaft assembly, said end effector comprising; an elongate channel sized to receive a staple cartridge therein; an anvil pivotally coupled to said elongate channel and being pivotally responsive to said open and closing motions from said elongate shaft assembly; and a firing mechanism operably supported within one of said elongate channel and the staple cartridge and being movable from an unactuated position to an actuated position in response to an application of said firing motion from said pneumatically powered drive system and being movable from said actuated position to said unactuated position in response to another application of said retraction motion from said pneumatically powered drive system and wherein said surgical instrument further comprises; a retraction member communicating with said pneumatically powered drive system to enable a manually generated retraction motion to be applied thereto to manually move the firing mechanism in a proximal direction from the actuated position to the unactuated position. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification