Endoscopic reposable surgical clip applier

A surgical clip applier, comprising:

• a handle assembly including a housing, a trigger and a drive member, the trigger being pivotable with respect to the housing to cause actuation of the drive member;
• a first endoscopic assembly including a first drive assembly and being selectively engagable with the handle assembly, the first endoscopic assembly including a plurality of surgical clips therein, wherein when the first endoscopic assembly is engaged with the handle assembly, actuation of the drive member of the handle assembly causes actuation of the first drive assembly of the first endoscopic assembly;
• a second endoscopic assembly including a second drive assembly and being selectively engagable with the handle assembly, the second endoscopic assembly being configured to selectively hold and form exactly one surgical clip at a time, wherein when the second endoscopic assembly is engaged with the handle assembly, actuation of the drive member of the handle assembly causes actuation of the second drive assembly of the second endoscopic assembly;
• and
• a release lever supported on the housing of the handle assembly and including a catch for engaging and securing one endoscopic assembly of the first endoscopic assembly and the second endoscopic assembly that is engaged with the handle assembly.

A surgical instrument, comprising:

• a handle assembly including a housing, a fixed handle extending from the housing, a pivotable trigger, a drive plunger operatively engaged by the trigger, and a release lever supported on the housing, the release lever including a catch for engaging and securing an endoscopic assembly that is selectively connected to the handle assembly;
• a first endoscopic assembly selectively connectable to the housing of the handle assembly, via the catch of the release lever, the first endoscopic assembly including:
• a shaft assembly having an outer tube defining a lumen therethrough;
• a pair of jaws pivotably engaged with a distal end of the outer tube;
• an inner shaft slidably supported within the lumen of the outer tube, a distal end of the inner shaft being operatively engaged with the pair of jaws to effectuate opening and closing of the pair of jaws upon an axial translation of the inner shaft relative to the outer tube;
• and
• a drive assembly configured for selective insertion in a bore of the housing of the handle assembly, the drive assembly including:
• a cartridge cylinder having a proximal end wall, an open distal end, and a bore therein;
• a cartridge plunger supported on a proximal end of the inner shaft and being slidably supported in the bore of the cartridge cylinder;
• and
• a first biasing member disposed within the bore of the cartridge cylinder, and being interposed between the proximal end wall of the cartridge cylinder and the cartridge plunger;
• and
• a second endoscopic assembly selectively connectable to the housing of the handle assembly, via the catch of the release lever, the second endoscopic assembly including:
• a shaft assembly having an outer tube defining a lumen therethrough;
• a pair of jaws fixedly supported in and extending from a distal end of the outer tube;
• a spindle slidably supported in the lumen of the outer tube, the spindle being translatable between a proximal position where the pair of jaws is opened and a distal position where the pair of jaws is closed;
• an inner shaft slidably supported within the lumen of the outer tube, a distal end of the inner shaft being operatively engaged with the spindle to cause a translation of the spindle between the proximal and distal positions thereof;
• and
• a drive assembly configured for selective insertion in the bore of the housing of the handle assembly, the drive assembly including:
• a cartridge cylinder having a proximal end wall, an open distal end, and a bore therein;
• a cartridge plunger slidably supported in the bore of the cartridge cylinder;
• and
• a first biasing member disposed about the cartridge cylinder, and being interposed between a proximal flange supported on the cartridge cylinder, and a pair of opposed fingers on the cartridge plunger.

A surgical instrument, comprising:

• a handle assembly including a housing, a trigger and a drive member, the trigger being pivotable with respect to the housing to cause actuation of the drive member;
• a first endoscopic assembly including a first drive assembly, an outer tube defining a lumen therethrough, a pair of jaws pivotably and fixedly supported in and extending from a distal end of the outer tube, and an inner shaft slidably supported within the lumen of the outer tube, the inner shaft including a proximal end and a distal end, the distal end of the inner shaft being operatively engaged with the pair of jaws to effectuate an opening and a closing of the pair of jaws upon an axial translation of the inner shaft relative to the outer tube, the first endoscopic assembly being selectively engagable with the handle assembly, wherein when the first endoscopic assembly is engaged with the handle assembly, actuation of the drive member of the handle assembly causes actuation of the first drive assembly of the first endoscopic assembly;
• and
• a second endoscopic assembly including a second drive assembly, an outer tube defining a lumen therethrough, a pair of jaws pivotably and fixedly supported in and extending from a distal end of the outer tube, and a spindle slidably supported in the lumen of the outer tube, the spindle including a proximal end and a distal end, the spindle being translatable between a proximal position whereby the pair of jaws is opened and a distal position whereby the pair of jaws is closed, the second endoscopic assembly being selectively engagable with the handle assembly, wherein the second drive assembly is different than the first drive assembly, wherein when the second endoscopic assembly is engaged with the handle assembly, actuation of the drive member of the handle assembly causes actuation of the second drive assembly of the second endoscopic assembly.