Endoscopic instrument
First Claim
1. An endoscopic instrument, comprising:
- a housing;
a spring carrier supported within the housing;
a shaft assembly configured for releasable engagement with the housing and the spring carrier, the shaft assembly including first and second shaft members and a bushing, the bushing slidably engaged to the first shaft member and fixedly engaged to the second shaft member such that the first shaft member is slidable relative to the second shaft member and the bushing, wherein the second shaft member is coaxially disposed within the first shaft member;
an end effector supported at a distal end of the shaft assembly; and
a locking mechanism including a C-shaped locking member and a latch operably disposed on the housing and coupled to the C-shaped locking member, wherein the latch is movable relative to the housing from an unlocked condition permitting insertion and removal of the shaft assembly from the housing, to a locked condition, wherein the latch directly engages the C-shaped locking member and urges the C-shaped locking member to engage the first shaft member to the spring carrier such that actuation of the spring carrier causes axial movement of the first shaft member, and wherein the latch directly engages the bushing and engages the bushing to the housing to longitudinally fix the bushing and the second shaft member relative to the housing.
1 Assignment
0 Petitions
Accused Products
Abstract
An endoscopic instrument is provided and includes a housing including an elongated shaft assembly extending distally therefrom. The elongated shaft assembly includes inner and outer shaft members. The inner and outer shaft members are removably coupled to the housing and the outer shaft member is movable with respect to the inner shaft member. An end effector is operably supported at the distal end of the outer shaft member and includes a pair of jaw members configured for treating tissue. A bushing operably couples to the inner and outer shaft members of the shaft assembly and selectively and releasably couples to the housing. The bushing includes one or more mechanical interfaces configured to engage one or more slots defined through the inner shaft member and one or more slots defined through the outer shaft member to release the inner and outer shaft members from the housing.
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Citations
9 Claims
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1. An endoscopic instrument, comprising:
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a housing; a spring carrier supported within the housing; a shaft assembly configured for releasable engagement with the housing and the spring carrier, the shaft assembly including first and second shaft members and a bushing, the bushing slidably engaged to the first shaft member and fixedly engaged to the second shaft member such that the first shaft member is slidable relative to the second shaft member and the bushing, wherein the second shaft member is coaxially disposed within the first shaft member; an end effector supported at a distal end of the shaft assembly; and a locking mechanism including a C-shaped locking member and a latch operably disposed on the housing and coupled to the C-shaped locking member, wherein the latch is movable relative to the housing from an unlocked condition permitting insertion and removal of the shaft assembly from the housing, to a locked condition, wherein the latch directly engages the C-shaped locking member and urges the C-shaped locking member to engage the first shaft member to the spring carrier such that actuation of the spring carrier causes axial movement of the first shaft member, and wherein the latch directly engages the bushing and engages the bushing to the housing to longitudinally fix the bushing and the second shaft member relative to the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification