Covidien LP

Boston Scientific Scimed, Inc.

Longsheng Cai

Wei Zhang

Kun Zhao

Shunhong Xu

Yuandong Tan

Anirudh Raikar

Yin Xia

Minfeng Hua

Xinzhe Pei

Xiliang Zhang

Peng Fei Yi

Zhaokai Wang

Encheng Hu

A medical device includes an electrode shaft and an insulation tip. The electrode shaft is configured to deliver energy to a target site and includes an electrode shaft lumen configured to deliver fluid to the target site. The insulation tip is coupled to a distal tip of the electrode shaft. The insulation tip includes an insulation tip lumen fluidly connected to the electrode shaft lumen and configured to deliver fluid to the target site. The insulation tip covers an entirety of the distal tip of the electrode shaft.

Medical devices and related methods

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 clip applier () includes a handle assembly () and an endoscopic assembly (). The handle assembly () includes a housing () defining a body portion () and a fixed handle portion () extending from the body portion () and a trigger () pivotably connected to the housing () and movable relative to the fixed handle portion () between an un-actuated position and an actuated position. The endoscopic assembly () includes a proximal hub () configured to be selectively engageable with the housing () of the handle assembly (), an elongated shaft () extending distally therefrom, an end effector () supported at a distal end of the elongated shaft (), and an inner drive assembly () including a proximal portion () and a distal portion (). The proximal portion () may advance within the distal portion () upon a blockage of the end effector assembly () to permit the trigger () to return to an un-actuated position.

Endoscopic surgical clip applier

A surgical device includes a handle assembly and a firing counter assembly. The handle assembly includes a housing defining a window, a trigger, and a drive member axially movable within the housing and operatively coupled with the trigger. The firing counter assembly includes a camming pin and a sleeve rotatably supported about the drive member and defining a continuous groove. The sleeve has indicia circumferentially arranged about the sleeve and corresponding to the number of surgical clips in the surgical device. The camming pin is supported on the drive member for concomitant axial displacement with the drive member. The camming pin is configured to slide through the continuous groove of the sleeve, wherein actuation of the trigger causes rotation of the sleeve such that the indicia corresponding to the number of surgical clips remaining in the surgical device is shown through the window of the housing.

Firing counter for medical devices

Endoscopic reposable surgical clip appliers including a reusable handle assembly and at least one reusable shaft assembly.

Endoscopic reposable surgical clip applier

A surgical loading unit () for use with a surgical handle assembly () includes a handle mount () dimensioned for mounting to the handle assembly (), an outer member () extending from the handle mount (), a staple cartridge assembly () mounted to the distal end of the outer member (), and an anvil assembly () couplable relative to the staple cartridge assembly (). A staple pusher () is at least partially disposed within the outer member () and operatively coupled to the staple cartridge assembly (). The staple pusher () is adapted for longitudinal movement to eject staples from the staple cartridge assembly (). An anvil approximator () is at least partially disposed within the outer member () and is operatively coupled to the anvil assembly (). The anvil approximator () is adapted for movement between first and second positions corresponding to closed and open conditions of the anvil assembly () relative to the staple cartridge assembly (). A lock member () is mounted to the handle mount (). The lock member () is adapted to move from a lock position in secured engagement with the staple pusher () and the anvil approximator () to a release position releasing the staple pusher () and the anvil approximator () upon mounting of the handle mount () relative to the surgical handle assembly ().

Growing community of inventors

Shanghai, China

Longsheng Cai