Filter mesh for preventing passage of embolic material form an atrial appendage

• US 7,722,641 B2
• Filed: 12/08/2004
• Issued: 05/25/2010
• Est. Priority Date: 11/06/1998
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Atritech Inc. (Boston Scientific Corporation)
• Inventors: Lesh, Michael D., van der Burg, Erik J.
• Primary Examiner(s): Manahan; Todd E
• Assistant Examiner(s): Dowe; Katherine M
• Application Number:
  US11/009,392
• Publication Number:
  US 20050203568A1
• Time in Patent Office: 1,994 Days
• Field of Search: 606/200, 606/151, 606/213, 606/216, 606/220, 606/153, 606/142, 606/157, 607126-128, 607130-132, 241/226, 24130-132, 241/29.R, 241/29.W
• US Class Current: 606/216
• 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 17/12031 complete occlusion
• CPC Class Codes: A61B 17/12122 within the heart for closing a cardiac septal defect A61B17/0057
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/12186 liquid materials adapted to be injected
• CPC Class Codes: A61B 17/12195 comprising a curable material
• CPC Class Codes: A61B 17/122 Clamps or clips , e.g. for the umbilical cord for the vas deferens A61F6/206
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00557 inflatable A61B2017/22051 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 2017/00597 Implements comprising a membrane
• CPC Class Codes: A61B 2017/00601 Implements entirely comprised between the two sides of the opening
• 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 2017/00632 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 2017/081 : Tissue approximator A61B2017/1103, A61B17/8866 take precedence
• CPC Class Codes: A61B 2017/1205 : Introduction devices
• CPC Class Codes: A61F 2/01 : Filters implantable into blood vessels
• 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 2230/0069 : cylindrical
• CPC Class Codes: A61F 2230/0071 : spherical
• CPC Class Codes: A61F 2230/008 : paraboloidal
• CPC Class Codes: A61M 2025/1054 : having detachable or disposable balloons
• CPC Class Codes: A61M 2210/125 : Heart
• CPC Class Codes: A61M 25/10 : Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00

Abstract

A device and method for obliterating or occluding a body cavity or passageway, in particular, the left atrial appendage of a patient'"'"'s heart. The procedure can be carried out intraoperatively, but is preferably carried out percutaneously by use of a delivery catheter to position an occluding device adjacent a patient'"'"'s left atrial appendage. The occluding device may prevent the passage of embolic or other material to or from the left atrial appendage by volumetrically filling the appendage, closing the opening of the appendage with an occluding member, or pulling the tissue around the opening of the appendage together and fixing it in a closed state.

Claims

1. Apparatus for closing off an atrial appendage comprising:

an elongate shaft having a proximal end and a distal end and an inner lumen;

a first elongate member and a second elongate member, each positioned and slidably disposed within said inner lumen;

said first elongate member and said second elongate member each having a proximal end and a distal end;

a first tissue attachment member mounted at said distal end of said first elongate member and second tissue attachment member mounted at said distal end of said second distal member;

said first tissue attachment member and said second tissue attachment member each having a means for grasping tissue;

a distal anchor member slidably disposed within said inner lumen, said distal anchor member terminating in a helical tissue piercing helical member;

a control module (164) located at said proximal end of said elongate shaft;

said control module operable to advance and retract each of said first and second elongate members and to activate said tissue piercing helical member;

said control module operable to advance and retract said distal tissue piercing helical member.

2. A method of closing off an atrial appendage having an ostium, having annular edge, and having a rear most portion, the method comprising the step of:

advancing,

an apparatus of the type having;

an elongate shaft having a proximal end and a distal end and an inner lumen;

a first elongate member and a second elongate member, each positioned and slidably disposed within said inner lumen;

said first elongate member and said second elongate member each having a proximal end and a distal end;

a first tissue attachment member mounted at said distal end of said first elongate member and second tissue attachment member mounted at said distal end of said second distal member;

a distal anchor member slidably disposed within said inner lumen, said distal anchor member terminating in a helical tissue piercing screw

a control module located at said proximal end of said elongate shaft;

said control module operable to advance and retract each of said first and second elongate members and to activate said tissue attachment member;

said control module operable to advance and retract said distal anchor member;

through the patient'"'"'s vasculature;

positioning, said apparatus near the ostium of said appendage;

advancing, said tissue attachment members out of said lumen;

activating, said tissue attachment members to grasp tissue at the annular edge of the ostium of said appendage;

advancing, said distal tissue piercing helical member into said appendage and toward the rearmost portion of said appendage;

activating, said control module to place said tissue piercing helical member in tissue at the rearmost portion of said appendage;

advancing, said elongate shaft along said first and second elongate members, thereby drawing said annular edge of said ostium to a closed state;

applying, a closure member to said annular edge;

thereby sealing the ostium.