System and method for delivering a left atrial appendage containment device

• US 7,735,493 B2
• Filed: 08/15/2003
• Issued: 06/15/2010
• Est. Priority Date: 08/15/2003
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Atritech Inc. (Boston Scientific Corporation)
• Inventors: Frazier, Andrew G. C., Khairkhahan, Alexander K., Roue, Chad C., van der Burg, Erik J., Klenk, Alan R.
• Primary Examiner(s): Manahan; Todd E
• Assistant Examiner(s): BACHMAN, LINDSEY MICHELE
• Application Number:
  US10/642,384
• Publication Number:
  US 20050038470A1
• Time in Patent Office: 2,496 Days
• Field of Search: 606/200, 606/213, 606/118, 606190-199, 623/1.11, 128/887, 600/200, 600/201, 600/204, 604107-109
• US Class Current: 128/887
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12122 within the heart for closing a cardiac septal defect A61B17/0057
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/3431 being collapsible, e.g. made of thin flexible material A61B17/3423 takes precedence
• CPC Class Codes: A61B 2017/00349 Needle-like instruments having hook or barb-like gripping means, e.g. for grasping suture or tissue A61B17/06066 takes precedence
• CPC Class Codes: A61B 2017/00575 for closure at remote site, e.g. closing atrial septum defects
• CPC Class Codes: A61B 2017/00579 Barbed implements
• CPC Class Codes: A61B 2017/00592 Elastic or resilient implements
• CPC Class Codes: A61B 2017/00615 Implements with an occluder on one side of the opening and holding means therefor on the other
• CPC Class Codes: A61B 2017/00619 Locking means for locking the implement in expanded state
• CPC Class Codes: A61B 2017/00623 Introducing or retrieving devices therefor
• CPC Class Codes: A61B 2017/00632 Occluding a cavity, i.e. closing a blind opening
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/12054 Details concerning the detachment of the occluding device from the introduction device
• CPC Class Codes: A61B 2017/12095 Threaded connection
• CPC Class Codes: A61B 2090/037 with a frangible part, e.g. by reduced diameter
• CPC Class Codes: A61B 2090/3933 Liquid markers
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61F 2/0105 Open ended, i.e. legs gathered only at one side
• CPC Class Codes: A61F 2/0108 : Both ends closed, i.e. legs gathered at both ends
• CPC Class Codes: A61F 2002/018 : made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2230/0006 : circular
• CPC Class Codes: A61F 2230/0071 : spherical
• CPC Class Codes: A61F 2230/0076 : ellipsoidal or ovoid

Abstract

A device for containing emboli within a left atrial appendage of a patient includes a frame that is expandable from a reduced cross section to an enlarged cross section and a slider assembly. The frame extends between a proximal hub and a distal hub, and the slider assembly is coupled to the distal hub of the frame. The slider assembly includes a guide tube that has a channel extending proximally away from the distal hub, and a nut. The nut is longitudinally moveable within the channel of the guide tube over a predetermined distance relative to the guide tube. The nut is operable to be releasably coupled with an elongate core, and movement of the nut relative to the guide tube is at least partially limited by interference between a portion of the nut and a portion of the guide tube.

Claims

1. A system for preventing the release of embolic material from the left atrial appendage of a medical patient, comprising:

an axially moveable core having a proximal end and a distal end;

an implant having a proximal end and a distal end; and

a slider assembly positioned within the implant, the slider assembly comprising;

a guide tube extending proximally from the distal end of the implant; and

a nut slideably received and substantially coaxially aligned within the guide tube, the nut being operable to releasably engage a distal portion of the axially moveable core;

wherein movement of the axially moveable core when engaged with the nut allows the nut to slide within the guide tube without substantially affecting the shape or position of the implant; and

,

wherein the guide tube includes at least one slot extending at least partially along a length thereof; and

,

wherein the nut includes at least one flange extending into the at least one slot, wherein movement of the nut within the at least one slot is at least partially limited by interference between the at least one slot and the at least one flange; and

,

wherein the at least one slot has a length of between about 3 to 35 mm; and

,

wherein the implant is enlargeable from a collapsed configuration to an expanded configuration; and

,

wherein the implant comprises a frame extending between a proximal hub and a distal hub.

2. The system of claim 1, wherein the axially moveable core is adapted to extend through the proximal hub and into the guide tube.