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Transseptal left atrial access and septal closure

a transseptal and left atrial technology, applied in the field of medical science, can solve the problems of tortuous path into the left atrium, not being used largely, and severe consequences for patients

Inactive Publication Date: 2007-04-19
COAPTUS MEDICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The invention is about methods and devices for using radiofrequency to cross an interatrial septum and seal an opening in it closed. This can be useful in treating heart conditions such as atrial fibrillation or patent text describes methods for sealing a closed opening in a heart. The technical effects of the invention include improved precision and accuracy in treating heart conditions and reduced risk of complications during surgery."

Problems solved by technology

However, this path into the left atrium is tortuous.
While this technique has been widely known since the 1950's, it has not been used largely because the technique has not proven reliable or secure.
Misalignment or the incorrect orientation of the needle against the septum, for example, may have severe consequences for the patient, including perforation of the left atrium of the heart or perforation of a patient's aorta.
Inadvertent perforations of the inferior vena cava and the coronary sinus have also been reported as a possible complication of this technique.

Method used

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  • Transseptal left atrial access and septal closure
  • Transseptal left atrial access and septal closure
  • Transseptal left atrial access and septal closure

Examples

Experimental program
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Embodiment Construction

[0012] Broadly, methods, systems and RF devices for crossing the septum 1 and creating openings 3 of a specified size and pattern are provided. Methods, systems and RF devices for closing these openings 3 and joining septal tissue are also provided. Openings 3 in a wide variety of patterns and sizes can be created in the septum 1 in accordance with the present invention, including but not limited to: single slits 5 (FIG. 1A), radial slits 7 (FIG. 1B) and a plurality of bisecting slits 9 (FIG. 1C) as illustrated in FIGS. 1A-1C. The specific shape or pattern of the opening 3 is determined by the configuration of the wire(s) or electrodes(s) located on the distal end of an RF penetrating device or catheter as described herein. FIG. 1 further illustrates yet another aspect of the invention involving the use of an adaptively shaped RF sealing device or catheter to close the various types of openings 3. The dotted lines in FIG. 1 depict the shapes of various RF sealing devices or catheter...

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PUM

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Abstract

Methods, systems, and devices for transseptal access into the left atrium of a heart. In one embodiement an apparatus for transseptal left atrial access comprised of a catheter adapted for insertion into a vessel and one or more RF devices adapted to be extendable from the distal end of said catheter and configured for the penetration or sealing of septal tissue.

Description

COPYRIGHT NOTICE [0001] A portion of this patent document contains material that is subject to copyright protection. The copyright owner does not object to the facsimile reproduction of the patent document as it appears in the U.S. Patent and Trademark Office patent file or records but otherwise reserves all copyright rights whatsoever. FIELD OF THE INVENTION [0002] The present invention relates generally to the medical arts and specifically to transseptal methods, devices, and systems for accessing the left atrium of a patient's heart and for sealing closed an opening in the septum and / or for sealing septal tissue together. BACKGROUND OF THE INVENTION [0003] With recent advances in the cardiovascular arts, there's a renewed interest in finding safe and uncomplicated methods for accessing the left atrium of a patient's heart. Currently, a retrograde transaortal technique is most often and involves advancing a catheter through the aorta, into the left ventricle, accessing the left at...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B18/18A61B18/00A61B18/14
CPCA61B18/1492A61B2017/00575A61B2018/00029A61B2018/0022A61B2018/00261A61B2018/00351A61B2018/00619A61B2018/1407
Inventor AUTH, DAVID C.BARRY, ROBERT L.SCHWARTZ, ROBERT S.VAN TASSEL, ROBERT A.
Owner COAPTUS MEDICAL CORP