A handle assembly for a left atrial appendage occlusion device delivery system comprising: a first non-rotating catheter displacement component rotatably connected to a second rotatable catheter displacement component, said first non-rotating catheter displacement component having a distal end adapted to operably connect to a delivery catheter for a left atrial appendage occlusion device, wherein the first non-rotating catheter displacement component and the second rotatable catheter displacement component further comprise a lumen therethrough, wherein the second rotatable catheter displacement component portion of the lumen comprises an internally threaded segment; a first manipulation segment having an externally threaded tubular distal extension adapted to rotationally engage the internally threaded segment of the second rotatable catheter displacement component, said externally threaded tubular distal extension having a length; wherein rotation of the second rotatable catheter displacement component relative to the first non-rotating catheter displacement component is adapted to displace the delivery catheter proximally by a distance at least equal to the length of the externally threaded tubular distal extension of the first manipulation segment, characterized in that the first manipulation segment further comprises a tubular segment affixed to a proximal end of the externally threaded tubular distal extension, the tubular segment being sized and adapted to be slidably received within the internally threaded segment of the second rotatable catheter displacement component, wherein the tubular segment of the first manipulation segment is adapted to withdraw the delivery catheter proximally for an additional length. a first non-rotating catheter displacement component rotatably connected to a second rotatable catheter displacement component, said first non-rotating catheter displacement component having a distal end adapted to operably connect to a delivery catheter for a left atrial appendage occlusion device, wherein the first non-rotating catheter displacement component and the second rotatable catheter displacement component further comprise a lumen therethrough, wherein the second rotatable catheter displacement component portion of the lumen comprises an internally threaded segment; a first manipulation segment having an externally threaded tubular distal extension adapted to rotationally engage the internally threaded segment of the second rotatable catheter displacement component, said externally threaded tubular distal extension having a length; wherein rotation of the second rotatable catheter displacement component relative to the first non-rotating catheter displacement component is adapted to displace the delivery catheter proximally by a distance at least equal to the length of the externally threaded tubular distal extension of the first manipulation segment, characterized in that the first manipulation segment further comprises a tubular segment affixed to a proximal end of the externally threaded tubular distal extension, the tubular segment being sized and adapted to be slidably received within the internally threaded segment of the second rotatable catheter displacement component, wherein the tubular segment of the first manipulation segment is adapted to withdraw the delivery catheter proximally for an additional length.