Exclusion device beams and related methods
Inventors
Recker, Lynn Ann • Biehle, Edward • Fago, Frank • Mata, Carol Ann
Assignees
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Publication Number
US-12575834-B2
Publication Date
2026-03-17
Expiration Date
Abstract
Exclusion devices for anatomical structures, and related instruments and related methods, are disclosed. An exclusion device for an anatomical structure may include a first beam, a second beam, and/or at least one spring operatively coupled to the first beam and the second beam to exert a closing force on the first beam and the second beam and bias the first beam and the second beam in a closing direction. The spring may be operatively coupled to the first beam by a crimp connection.
Core Innovation
An exclusion device for an anatomical structure is disclosed, comprising a first beam including a longitudinal cavity, a second beam, and at least one spring received within the longitudinal cavity. The at least one spring is operatively coupled to the first beam and the second beam to exert a closing force and bias the first beam and the second beam in a closing direction. The spring is generally U-shaped and includes a first end portion and a second end portion generally opposite from a connecting portion, and the longitudinal cavity receives the first end portion of the at least one spring.
The first beam is configured to prevent rotation of the at least one spring with respect to the first beam, and the at least one spring is operatively coupled to the first beam by a first crimp connection. The outer wall includes an outwardly facing recess proximate the longitudinal cavity, and the outwardly facing recess is configured to receive a tool therein for crimping the first beam and the at least one spring. In disclosed refinements, a plastically deformed portion is used in the crimp connection, including plastically deformed portions of the spring engaged with plastically deformed portions of the first beam.
Additional embodiments describe coupling and alignment features for the exclusion device, including a longitudinal slot that receives a portion of at least one spring to reduce the likelihood that the first beam and the second beam move out of generally coplanar alignment. Other embodiments describe a first beam having a spring cavity and an outwardly facing recess configured to receive a tool for crimping, and further embodiments describe an exclusion device where the at least one spring is operatively coupled to the first beam by a friction fit proximate a transverse hole, with the first beam configured to inhibit rotation of the at least one spring with respect to the first beam.
Claims Coverage
The document includes three independent claims. Across these independent claims, the main inventive features involve biasing a first and second beam into a closing direction using an internal spring retained and coupled to the first beam, with rotation inhibition and a tool-access recess for coupling or alternative friction-fit coupling, plus defined spring geometry and cavity relationships.
Beam and spring closing bias with longitudinal cavity
An exclusion device for an anatomical structure comprising a first beam including a longitudinal cavity, a second beam, and at least one spring received within the longitudinal cavity and operatively coupled to the first beam and the second beam to exert a closing force on the first beam and the second beam and bias the first beam and the second beam in a closing direction.
Crimp-coupled U-shaped spring retained in cavity
The at least one spring is operatively coupled to the first beam by a first crimp connection, wherein the at least one spring is generally U-shaped and comprises a first end portion and a second end portion generally opposite from a connecting portion, and wherein the longitudinal cavity receives the first end portion of the at least one spring.
Rotation inhibition and tool-access outwardly facing recess for crimping
The first beam is configured to prevent rotation of the at least one spring with respect to the first beam, wherein the first beam comprises an outer wall generally opposite a clamping surface, the clamping surface generally facing the second beam, wherein the outer wall comprises an outwardly facing recess proximate the longitudinal cavity, and wherein the outwardly facing recess is configured to receive a tool therein for crimping the first beam and the at least one spring.
Spring cavity and outwardly facing tool recess
An exclusion device for an anatomical structure comprising a first beam, a second beam, and at least one spring operatively coupled to the first beam and the second beam to exert a closing force and bias the first beam and the second beam in a closing direction, wherein the at least one spring is operatively coupled to the first beam by a first crimp connection, wherein the at least one spring is generally U-shaped and comprises a first end portion and a second end portion generally opposite from a connecting portion, wherein the first beam comprises a spring cavity receiving the first end portion of the at least one spring, and wherein the first beam comprises an outer wall generally opposite a clamping surface, the clamping surface generally facing the second beam, wherein the outer wall comprises an outwardly facing recess proximate the spring cavity, and wherein the outwardly facing recess is configured to receive a tool therein for crimping the first beam and the at least one spring.
Friction-fit coupled spring proximate transverse hole with rotation inhibition
An exclusion device for an anatomical structure comprising a first beam including a longitudinal cavity intersected by a transverse hole, a second beam, and at least one spring operatively coupled to the first beam and the second beam to exert a closing force and bias the first beam and the second beam in a closing direction, wherein the at least one spring is operatively coupled to the first beam by a friction fit proximate the transverse hole, and wherein the first beam is configured to inhibit rotation of the at least one spring with respect to the first beam.
Across the independent claims, the device is defined by a first beam and second beam biased into a closing direction by at least one spring retained in a longitudinal cavity or spring cavity, with coupling to the first beam via a first crimp connection, including a tool-receiving outwardly facing recess, or via a friction fit proximate a transverse hole, while the first beam is configured to prevent or inhibit rotation of the spring relative to the first beam.
Stated Advantages
Reduce stroke risk.
Reduce atrial fibrillation burden.
Reduce tissue interaction with rigid components by using biocompatible fabric covers.
Promote tissue ingrowth.
Enables a reduced lateral envelope for use with a 5 mm trocar.
Documented Applications
Left atrial appendage (LAA) sealing to reduce stroke risk and atrial fibrillation burden.
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