Surgical stapling apparatus with locking mechanism
First Claim
Patent Images
1. A surgical stapling apparatus comprising:
- a housing;
a handle supported by the housing; and
a loading unit supportable on a distal end of the housing, the loading unit including;
a housing portion including a distal end and a proximal end;
a drive assembly slidably supported within the housing portion of the loading unit; and
a locking member rotatably supported about the housing portion of the loading unit and including a locking portion extending through the housing portion, the locking member being movable from a first position wherein the locking portion engages the drive assembly and maintains the drive assembly in a ready-to-load position to a second position wherein the locking portion permits movement of the drive assembly relative to the housing portion.
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Accused Products
Abstract
The present disclosure provides for a loading unit for use with a surgical stapling apparatus. The loading unit includes a housing portion having a distal end and a proximal end, a drive assembly slidably supported within the housing portion of the loading unit, and a locking member supported on the housing portion of the loading unit. The locking member is movable from a first position wherein the locking member engages the drive assembly and maintains the drive assembly in a ready-to-load position to a second position wherein the locking member permits movement of the drive assembly relative to the housing portion.
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Citations
22 Claims
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1. A surgical stapling apparatus comprising:
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a housing;
a handle supported by the housing; and
a loading unit supportable on a distal end of the housing, the loading unit including;
a housing portion including a distal end and a proximal end;
a drive assembly slidably supported within the housing portion of the loading unit; and
a locking member rotatably supported about the housing portion of the loading unit and including a locking portion extending through the housing portion, the locking member being movable from a first position wherein the locking portion engages the drive assembly and maintains the drive assembly in a ready-to-load position to a second position wherein the locking portion permits movement of the drive assembly relative to the housing portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A loading unit selectively supportable on a distal end of an elongate body of a surgical stapling apparatus, the loading unit comprising:
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a housing portion including a distal end and a proximal end;
a drive assembly slidably supported within the housing portion; and
a locking member for maintaining a drive assembly in a ready-to-load position when the loading unit is coupled to the elongate body of the surgical stapling apparatus, the locking member comprising;
a cuff-like body portion that at least partially surrounds an insertion tip of the loading unit; and
a tooth extending radially inward from the body portion, wherein the tooth selectively engages a notch formed in the drive assembly such that when the locking member is in a first position the tooth engages the notch of the drive assembly and maintains the drive assembly in the ready-to-load position, and when the locking member is in a second position the tooth is disengaged from the notch of the drive assembly. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A loading unit selectively supportable on a distal end of an elongate body of a surgical stapling apparatus, the loading unit comprising:
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a housing portion including a distal end and a proximal end;
a drive assembly slidably supported within the housing portion; and
a locking member rotatably supported about the housing portion and including a locking portion extending through the housing portion, the locking member being movable from a first position wherein the locking portion engages the drive assembly and maintains the drive assembly in a ready-to-load position to a second position wherein the locking portion permits movement of the drive assembly relative to the housing portion.
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21. A loading unit selectively supportable on a distal end of an elongate body of a surgical stapling apparatus, the loading unit comprising:
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an elongate body portion defining a longitudinal axis;
a tool assembly supported on a distal end of the elongate body portion, the tool assembly including an anvil assembly and a cartridge assembly housing a plurality of rows of staples, the anvil assembly and cartridge assembly being relatively movable between open and closed positions;
a drive assembly slidably supported within the housing portion and having a distal end configured to translate through the cartridge assembly and eject the staples therefrom; and
a locking member supported on the housing portion of the loading unit, the locking member being movable from a first position wherein the locking member engages the drive assembly and maintains the drive assembly in a ready-to-load position to a second position wherein the locking member permits movement of the drive assembly relative to the housing portion and the cartridge assembly. - View Dependent Claims (22)
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Specification