Method and apparatus for accessing the left atrial appendage
First Claim
Patent Images
1. A transseptal access sheath comprising;
- a first curved section, and a second curved section;
the first curved section having an outer edge that defines a first proximal edge point, and a first distal edge point wherein the intersection between a tangent drawn to the first curved section at the first proximal edge point and a tangent drawn to the first curved section at the first distal edge point, define a first angle and a first plane;
the second curved section having an outer edge that defines a second proximal edge point, and a second distal edge point wherein the intersection between a tangent drawn to the second curved section at the second proximal edge point and a tangent drawn to the second curved section at the second distal edge point, define a second angle and a second plane;
wherein the first angle is within the range of about 60°
to about 120°
;
wherein the second angle is within the range of about 0° and
about 180°
; and
wherein the angle between the first and second plane is within the range of about 60° and
about 120°
.
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Abstract
Disclosed is an apparatus for facilitating access to the left atrium, and specifically the left atrial appendage. The apparatus may comprise a sheath with first and second curved sections that facilitate location of the fossa ovalis and left atrial appendage. The apparatus may further comprise tissue piercing and dilating structures. Methods are also disclosed.
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Citations
27 Claims
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1. A transseptal access sheath comprising;
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a first curved section, and a second curved section;
the first curved section having an outer edge that defines a first proximal edge point, and a first distal edge point wherein the intersection between a tangent drawn to the first curved section at the first proximal edge point and a tangent drawn to the first curved section at the first distal edge point, define a first angle and a first plane;
the second curved section having an outer edge that defines a second proximal edge point, and a second distal edge point wherein the intersection between a tangent drawn to the second curved section at the second proximal edge point and a tangent drawn to the second curved section at the second distal edge point, define a second angle and a second plane;
wherein the first angle is within the range of about 60°
to about 120°
;
wherein the second angle is within the range of about 0° and
about 180°
; and
wherein the angle between the first and second plane is within the range of about 60° and
about 120°
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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13. A transseptal access sheath comprising;
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a first curved section, and a second curved section;
wherein the first curved section is shaped to abut the interior wall of the right atrium substantially opposite the fossa ovalis while directing the distal tip toward the fossa ovalis; and
,wherein the second curved section is shaped to facilitate location and access into the LAA.
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14. A transseptal access system comprising a sheath, a dilator and a needle;
wherein the sheath comprises;
a first curved section, and a second curved section;
the first curved section having an outer edge that defines a first proximal edge point, and a first distal edge point wherein the intersection between a tangent drawn to the first curved section at the first proximal edge point and a tangent drawn to the first curved section at the first distal edge point, define a first angle and a first plane;
the second curved section having an outer edge that defines a second proximal edge point, and a second distal edge point wherein the intersection between a tangent drawn to the second curved section at the second proximal edge point and a tangent drawn to the second curved section at the second distal edge point, define a second angle and a second plane;
wherein the first angle is within the range of about 75 degrees to about 105 degrees;
wherein the second angle is within the range of about 75 degrees to about 105 degrees; and
wherein the angle between the first and second plane is within the range of about 75 degrees to about 105 degrees.
Specification