Exclusion device covers and related methods
Inventors
Mata, Carol Ann • Kabbur, Nikhil • Recker, Lynn Ann • Volz, Justin David
Assignees
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Publication Number
US-12232743-B2
Publication Date
2025-02-25
Expiration Date
Abstract
Exclusion devices for anatomical structures, and related instruments and related methods, are disclosed. An exclusion device may include a first clamping portion, a second clamping portion opposing the first clamping portion, and/or a biocompatible fabric cover at least partially sheathing the first clamping portion and/or the second clamping portion. The cover may be generally tubular and/or may define a relaxed circumference when the first clamping portion and the second clamping portion are in a closed configuration. At least a portion of the cover may be configured to stretch to a stretched circumference of about 2× to about 3× the relaxed circumference when the first clamping portion and the second clamping portion are reconfigured from the closed configuration to an open configuration.
Core Innovation
The patent relates to an exclusion device for an anatomical structure, including a left atrial appendage occlusion clip. The device includes opposing first clamping portion and second clamping portion that transition between a closed configuration and an open configuration, and a biocompatible fabric cover at least partially sheaths at least one of the first and second clamping portions and defines a generally tubular relaxed circumference when the clamping portions are in the closed configuration.
At least a portion of the cover is configured to stretch to a stretched circumference of about 2× to about 3× the relaxed circumference when reconfigured from the closed configuration to the open configuration. The cover can include textile constructions such as circular knit/warp knit and woven polyethylene terephthalate (PET) yarn, and can be secured using ultrasonic weld and/or heat weld, including weld configurations intended to facilitate tissue ingrowth near welds.
The patent also discloses an exclusion device with a first beam and a second beam operatively coupled by a deformable first spring. The first spring moves between a first position and a second position in which the spacing between the beams decreases, and a biocompatible cover longitudinally circumscribes the spring and at least a portion of the first and second beams, with a first portion of the cover configured to at least double a widthwise dimension responsive to spring movement while a second portion generally maintains the widthwise dimension.
Claims Coverage
The patent has two independent claims. The independent claim set covers two alternative exclusion device architectures, one based on opposing clamping portions with a tubular stretchable fabric cover, and another based on beam-and-spring coupling with a cover portion that doubles its widthwise dimension responsive to spring position change.
Opposing clamping portions with a tubular stretchable fabric cover
An exclusion device with a first clamping portion and a second clamping portion opposing the first clamping portion, and a biocompatible fabric cover that is generally tubular and defines a relaxed circumference when the clamping portions are in a closed configuration, wherein at least a portion of the cover is configured to stretch to a stretched circumference of about 2× to about 3× the relaxed circumference when reconfigured from the closed configuration to an open configuration.
Beam-and-spring coupled spacing change with a widthwise-doubling cover portion
An exclusion device with a first beam and a second beam operatively coupled to the first beam by a first spring deformable between a first position and a second position such that first distance is greater than second distance, and a biocompatible cover longitudinally circumscribing the spring and at least a portion of the first and second beams, wherein a first portion of the biocompatible cover is configured to at least double its widthwise dimension responsive to the first spring moving between the first position and the second position, and a second portion generally maintains its widthwise dimension responsive to the first spring moving between the first position and the second position.
Across the independent claims, the coverage centers on how a biocompatible fabric cover changes geometry during open/closed or first-position/second-position transitions: stretching the generally tubular relaxed circumference to about 2× to about 3× in the clamping-portions architecture, and at least doubling a cover portion’s widthwise dimension responsive to spring-driven spacing reduction in the beam-and-spring architecture. Dependent claims further specify embodiments including an exclusion clip for a left atrial appendage occlusion, specific cover constructions and materials, weld types, and functional relationships between weld placement and tissue ingrowth.
Stated Advantages
Smaller profile.
Improved surgeon visualization in minimally invasive surgery.
Documented Applications
Minimally invasive surgery deployment and use of an exclusion device including a left atrial appendage occlusion clip.
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