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Transseptal needle assemblies and methods

Transseptal, tubular member technology for use in the field of transseptal needle assemblies and methods

Inactive Publication Date: 2009-05-27
ST JUDE MEDICAL ATRIAL FIBRILLATION DIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Placing these mechanisms at the distal tip has additional issues with structural flexibility and maneuverability during operation

Method used

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  • Transseptal needle assemblies and methods
  • Transseptal needle assemblies and methods
  • Transseptal needle assemblies and methods

Examples

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Embodiment Construction

[0027] In general, the present invention relates to systems and methods for transseptal access from the right atrium to the left atrium via the atrial septum. In particular, the present invention is directed to medical devices for use with catheter assemblies during cardiac procedures requiring transseptal puncture.

[0028] Figure 1 illustrates an assembled piercing assembly 10 with a portion disposed within a sheath 12, according to one embodiment of the present invention. Piercing assembly 10 has a retractable piercing device 14 disposed within an elongate tubular member or dilator 16 (for transseptal procedures). The sheath 12 preferably has a preformed elbow 18 bent at a desired angle for the transseptal catheterization procedure. Piercing assembly 10 also includes a displacement mechanism 20 operatively connected to piercing device 14 or dilator 16 , preferably to piercing device 14 . In operation, the displacement mechanism 20 is operably connected to the piercing dev...

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Abstract

The instant invention relates to transseptal access systems and methods for accessing the left atrium (52) from the right atrium (48) by crossing the interatrial septum (50). In particular, the instant invention is directed toward medical devices used with catheter assemblies in cardiology procedures that require transseptal puncture(s). The puncture assemblies (e.g., 10) have a moveable puncture device (e.g., 14) within a dilator (e.g., 16). The puncture device is biased in a retracted position. The position of the puncture assembly is precisely locatable. The puncture assembly is preferably flexible along the majority of the length of its and, therefore, can be used with any catheter assembly of any predetermined shape. The puncture device is adjustable from a position within the dilator to a position extending beyond the end of the dilator when necessary for use in transseptal procedures.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 60 / 800,853, filed May 17, 2006 (the '853 application). This application also claims priority to pending US nonprovisional application Ser. No. 11 / 647,312, filed December 29, 2006 (the '312 application). Both the '853 application and the '312 application are incorporated herein by reference in detail. technical field [0003] The present invention relates to needle assemblies and methods for puncturing or penetrating tissue in the body, including, for example, transseptal access systems and methods by entering the left atrium from the right atrium through the atrial septum. In particular, embodiments of the present invention are directed to medical devices for use with catheter assemblies during cardiac procedures requiring transseptal puncture. The piercing assembly has a movable piercing device in a dilator that is biased into a precisely positionable ...

Claims

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Application Information

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IPC IPC(8): A61B17/34
Inventor J·A·哈希特R·E·斯特赫
Owner ST JUDE MEDICAL ATRIAL FIBRILLATION DIV
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