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. <EOS>