Covidien LP

Yuandong Tan

Wei Zhang

Kun Zhao

Xiliang Zhang

Shunhong Xu

Longsheng Cai

Encheng Hu

Anirudh Raikar

Damao Gong

Yanjun Jiao

A circular stapling apparatus including a stationary handle, a trigger pivotably coupled to the stationary handle, a trigger lock selectively engageable with the trigger, and a firing link coupled to the trigger. The firing link has a catch thereon. The trigger lock has a latch assembly that is selectively engageable with the catch.

Surgical stapling apparatus with tissue gap lock

A circular stapling device includes a manually operated trigger () that is adapted to allow staple formation to occur prior to cutting of tissue during a single actuation of the firing trigger (). The stapling device () minimizes stretching and movement of tissue during staple formation to improve staple formation. The stapling device () also reduces the amount of force required to move the firing trigger () through a firing stroke by separating the staple formation and tissue cutting functions of the stapling device () to reduce stress on a clinician's hand during actuation of the stapling device ().

Circular stapling device

An endoscopic surgical clip applier () includes a handle assembly () configured to releasably engage at least two in different endoscopic assemblies (). The handle assembly () is configured to transition from a non-ratcheting use condition to a ratcheting use condition when an endoscopic assembly () configured for ratcheting use is engaged with the handle assembly (). The handle assembly () is maintained in the non-ratcheting use condition when an endoscopic assembly () configured for non-ratcheting use is engaged with the handle assembly (). Endoscopic assemblies () for use with the handle assembly () are also provided.

Endoscopic surgical clip applier and clip applying systems

An endoscopic surgical clip applier () includes a handle assembly () configured to releasably engage at least two different endoscopic assemblies (). The handle assembly () is configured to transition from a non-ratcheting use condition to a ratcheting use condition when an endoscopic assembly () configured for ratcheting use is engaged with the handle assembly (). The handle assembly () is maintained in the non-ratcheting use condition when an endoscopic assembly () configured for non-ratcheting use is engaged with the handle assembly (). Endoscopic assemblies () for use with the handle assembly are also provided.

A reposable surgical instrument includes a handle assembly () and an endoscopic assembly () releasably engagable with the handle assembly (). The handle assembly () includes a housing (), a drive bar () supporting a ratchet pawl (), and a trigger () coupled to the housing () and the drive bar (). The endoscopic assembly () includes a proximal hub () including a ratchet rack (), an elongated shaft () extending from the proximal hub () and supporting an end effector assembly() at a distal end () thereof, and a drive assembly () operably coupled to the end effector assembly (). In use, movement of the trigger () from an un-actuated position towards an actuated position translates the drive bar () from a proximal position towards a distal position to engage the ratchet pawl () with the ratchet rack () such that further distal translation of the drive bar () towards the distal position incrementally urges the drive assembly () from the un-fired position towards the fired position.

Endoscopic surgical clip applier

A surgical stapling device () includes a frame (), a pusher (), a clamping plate assembly (), a holder (), and a stapling plate (). The pusher () is movable in relation to the frame () between a retracted position and an advanced position. The pusher () is operatively associated with the holder (), the clamping plate assembly (), and the stapling plate () such that movement of the pusher () between the retracted and the advanced positions effects movement of the (), the clamping plate assembly (), and the stapling plate () to one of their respective retracted or advanced positions.

Surgical stapling devices

A reposable endoscopic surgical clip applier includes a handle assembly () configured to releasably engage at least two different endoscopic assemblies (). The handle assembly () is configured such that a ratcheting function thereof is disabled upon engagement of an endoscopic assembly () therewith that is not intended for ratcheting use and such that the ratcheting function is enabled upon engagement of an endoscopic assembly () therewith that is intended for ratcheting use. Endoscopic assemblies () for use with the handle assembly () are also provided.

Growing community of inventors

Shanghai, China

Yuandong Tan